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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 | */ | |
128ea8ab | 60 | DEFINE_QOBJ_TYPE(bgpevpn) |
c44ab6f1 | 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 void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
09319b4e DS |
69 | struct bgpevpn *vpn, |
70 | struct bgp_dest *dest, | |
71 | struct bgp_path_info *local_pi, | |
72 | const char *caller); | |
9c7edc03 | 73 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 74 | |
75 | /* | |
76 | * Private functions. | |
77 | */ | |
78 | ||
79 | /* | |
80 | * Make vni hash key. | |
81 | */ | |
d8b87afe | 82 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 83 | { |
d8b87afe | 84 | const struct bgpevpn *vpn = p; |
d62a17ae | 85 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 86 | } |
87 | ||
88 | /* | |
89 | * Comparison function for vni hash | |
90 | */ | |
74df8d6d | 91 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 92 | { |
d62a17ae | 93 | const struct bgpevpn *vpn1 = p1; |
94 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 95 | |
d62a17ae | 96 | if (!vpn1 && !vpn2) |
74df8d6d | 97 | return true; |
d62a17ae | 98 | if (!vpn1 || !vpn2) |
74df8d6d | 99 | return false; |
d62a17ae | 100 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 101 | } |
102 | ||
c44ab6f1 | 103 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
104 | { |
105 | const struct bgpevpn *vpn1 = p1; | |
106 | const struct bgpevpn *vpn2 = p2; | |
107 | ||
108 | return vpn1->vni - vpn2->vni; | |
109 | } | |
110 | ||
10ebe1ab MK |
111 | /* |
112 | * Make vrf import route target hash key. | |
113 | */ | |
d8b87afe | 114 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 115 | { |
d8b87afe QY |
116 | const struct vrf_irt_node *irt = p; |
117 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
118 | |
119 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
120 | } |
121 | ||
122 | /* | |
123 | * Comparison function for vrf import rt hash | |
124 | */ | |
74df8d6d | 125 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
126 | { |
127 | const struct vrf_irt_node *irt1 = p1; | |
128 | const struct vrf_irt_node *irt2 = p2; | |
129 | ||
130 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 131 | return true; |
10ebe1ab MK |
132 | |
133 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 134 | return false; |
10ebe1ab MK |
135 | |
136 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
137 | } | |
138 | ||
139 | /* | |
f9b8094e | 140 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
141 | */ |
142 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
143 | { | |
5e53dce3 | 144 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
145 | struct vrf_irt_node *irt; |
146 | ||
5e53dce3 T |
147 | bgp_evpn = bgp_get_evpn(); |
148 | if (!bgp_evpn) { | |
e50f7cfd | 149 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 150 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
151 | return NULL; |
152 | } | |
153 | ||
154 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
155 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
156 | |
157 | irt->rt = *rt; | |
158 | irt->vrfs = list_new(); | |
159 | ||
160 | /* Add to hash */ | |
5e53dce3 | 161 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
162 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
163 | return NULL; | |
164 | } | |
165 | ||
166 | return irt; | |
167 | } | |
168 | ||
169 | /* | |
170 | * Free the vrf import rt node | |
171 | */ | |
172 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
173 | { | |
5e53dce3 | 174 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 175 | |
5e53dce3 T |
176 | bgp_evpn = bgp_get_evpn(); |
177 | if (!bgp_evpn) { | |
e50f7cfd | 178 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 179 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
180 | return; |
181 | } | |
182 | ||
5e53dce3 | 183 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 184 | list_delete(&irt->vrfs); |
10ebe1ab MK |
185 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
186 | } | |
187 | ||
188 | /* | |
189 | * Function to lookup Import RT node - used to map a RT to set of | |
190 | * VNIs importing routes with that RT. | |
191 | */ | |
192 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
193 | { | |
5e53dce3 | 194 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
195 | struct vrf_irt_node *irt; |
196 | struct vrf_irt_node tmp; | |
197 | ||
5e53dce3 T |
198 | bgp_evpn = bgp_get_evpn(); |
199 | if (!bgp_evpn) { | |
f9b8094e T |
200 | flog_err( |
201 | EC_BGP_NO_DFLT, | |
202 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
203 | return NULL; |
204 | } | |
205 | ||
206 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
207 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 208 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
209 | return irt; |
210 | } | |
211 | ||
212 | /* | |
213 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
214 | */ | |
996c9314 | 215 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
216 | { |
217 | struct listnode *node = NULL, *nnode = NULL; | |
218 | struct bgp *tmp_bgp_vrf = NULL; | |
219 | ||
220 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
221 | if (tmp_bgp_vrf == bgp_vrf) | |
222 | return 1; | |
223 | } | |
224 | return 0; | |
225 | } | |
226 | ||
14c1a7bf | 227 | /* |
228 | * Make import route target hash key. | |
229 | */ | |
d8b87afe | 230 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 231 | { |
d8b87afe QY |
232 | const struct irt_node *irt = p; |
233 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
234 | |
235 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 236 | } |
237 | ||
238 | /* | |
239 | * Comparison function for import rt hash | |
240 | */ | |
74df8d6d | 241 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 242 | { |
d62a17ae | 243 | const struct irt_node *irt1 = p1; |
244 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 245 | |
d62a17ae | 246 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 247 | return true; |
14c1a7bf | 248 | |
d62a17ae | 249 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 250 | return false; |
14c1a7bf | 251 | |
d62a17ae | 252 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 253 | } |
254 | ||
7724c0a1 | 255 | /* |
128ea8ab | 256 | * Create a new import_rt |
257 | */ | |
d62a17ae | 258 | static struct irt_node *import_rt_new(struct bgp *bgp, |
259 | struct ecommunity_val *rt) | |
128ea8ab | 260 | { |
d62a17ae | 261 | struct irt_node *irt; |
128ea8ab | 262 | |
d62a17ae | 263 | if (!bgp) |
264 | return NULL; | |
128ea8ab | 265 | |
d62a17ae | 266 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 267 | |
d62a17ae | 268 | irt->rt = *rt; |
269 | irt->vnis = list_new(); | |
128ea8ab | 270 | |
d62a17ae | 271 | /* Add to hash */ |
272 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
273 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
274 | return NULL; | |
275 | } | |
128ea8ab | 276 | |
d62a17ae | 277 | return irt; |
128ea8ab | 278 | } |
279 | ||
280 | /* | |
281 | * Free the import rt node | |
7724c0a1 | 282 | */ |
d62a17ae | 283 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 284 | { |
d62a17ae | 285 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 286 | list_delete(&irt->vnis); |
d62a17ae | 287 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 288 | } |
289 | ||
14c1a7bf | 290 | /* |
128ea8ab | 291 | * Function to lookup Import RT node - used to map a RT to set of |
292 | * VNIs importing routes with that RT. | |
293 | */ | |
d62a17ae | 294 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
295 | struct ecommunity_val *rt) | |
128ea8ab | 296 | { |
d62a17ae | 297 | struct irt_node *irt; |
298 | struct irt_node tmp; | |
128ea8ab | 299 | |
d62a17ae | 300 | memset(&tmp, 0, sizeof(struct irt_node)); |
301 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
302 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
303 | return irt; | |
128ea8ab | 304 | } |
305 | ||
306 | /* | |
307 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
308 | */ | |
d62a17ae | 309 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 310 | { |
d62a17ae | 311 | struct listnode *node, *nnode; |
312 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 313 | |
d62a17ae | 314 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
315 | if (tmp_vpn == vpn) | |
316 | return 1; | |
317 | } | |
128ea8ab | 318 | |
d62a17ae | 319 | return 0; |
128ea8ab | 320 | } |
321 | ||
322 | /* | |
323 | * Compare Route Targets. | |
324 | */ | |
d62a17ae | 325 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
326 | struct ecommunity *ecom2) | |
128ea8ab | 327 | { |
d62a17ae | 328 | if (ecom1 && !ecom2) |
329 | return -1; | |
128ea8ab | 330 | |
d62a17ae | 331 | if (!ecom1 && ecom2) |
332 | return 1; | |
128ea8ab | 333 | |
d62a17ae | 334 | if (!ecom1 && !ecom2) |
335 | return 0; | |
128ea8ab | 336 | |
d62a17ae | 337 | if (ecom1->str && !ecom2->str) |
338 | return -1; | |
128ea8ab | 339 | |
d62a17ae | 340 | if (!ecom1->str && ecom2->str) |
341 | return 1; | |
128ea8ab | 342 | |
d62a17ae | 343 | if (!ecom1->str && !ecom2->str) |
344 | return 0; | |
128ea8ab | 345 | |
d62a17ae | 346 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 347 | } |
348 | ||
987d8198 DS |
349 | static void evpn_xxport_delete_ecomm(void *val) |
350 | { | |
351 | struct ecommunity *ecomm = val; | |
352 | ecommunity_free(&ecomm); | |
353 | } | |
354 | ||
128ea8ab | 355 | /* |
356 | * Mask off global-admin field of specified extended community (RT), | |
357 | * just retain the local-admin field. | |
358 | */ | |
d62a17ae | 359 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
360 | struct ecommunity_val *src) | |
128ea8ab | 361 | { |
d7c0a89a | 362 | uint8_t type; |
128ea8ab | 363 | |
d62a17ae | 364 | type = src->val[0]; |
365 | dst->val[0] = 0; | |
366 | if (type == ECOMMUNITY_ENCODE_AS) { | |
367 | dst->val[2] = dst->val[3] = 0; | |
368 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
369 | || type == ECOMMUNITY_ENCODE_IP) { | |
370 | dst->val[2] = dst->val[3] = 0; | |
371 | dst->val[4] = dst->val[5] = 0; | |
372 | } | |
128ea8ab | 373 | } |
374 | ||
10ebe1ab MK |
375 | /* |
376 | * Map one RT to specified VRF. | |
377 | * bgp_vrf = BGP vrf instance | |
378 | */ | |
996c9314 | 379 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
380 | { |
381 | struct vrf_irt_node *irt = NULL; | |
382 | struct ecommunity_val eval_tmp; | |
383 | ||
384 | /* If using "automatic" RT, | |
385 | * we only care about the local-admin sub-field. | |
386 | * This is to facilitate using L3VNI(VRF-VNI) | |
387 | * as the RT for EBGP peering too. | |
388 | */ | |
389 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 390 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
391 | mask_ecom_global_admin(&eval_tmp, eval); |
392 | ||
393 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
394 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
395 | /* Already mapped. */ | |
396 | return; | |
10ebe1ab | 397 | |
e066d6d0 | 398 | if (!irt) |
10ebe1ab | 399 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
400 | |
401 | /* Add VRF to the list for this RT. */ | |
402 | listnode_add(irt->vrfs, bgp_vrf); | |
403 | } | |
404 | ||
405 | /* | |
406 | * Unmap specified VRF from specified RT. If there are no other | |
407 | * VRFs for this RT, then the RT hash is deleted. | |
408 | * bgp_vrf: BGP VRF specific instance | |
409 | */ | |
996c9314 | 410 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
411 | { |
412 | /* Delete VRF from list for this RT. */ | |
413 | listnode_delete(irt->vrfs, bgp_vrf); | |
414 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
415 | vrf_import_rt_free(irt); |
416 | } | |
417 | } | |
418 | ||
128ea8ab | 419 | /* |
420 | * Map one RT to specified VNI. | |
14c1a7bf | 421 | */ |
d62a17ae | 422 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
423 | struct ecommunity_val *eval) | |
128ea8ab | 424 | { |
d62a17ae | 425 | struct irt_node *irt; |
426 | struct ecommunity_val eval_tmp; | |
128ea8ab | 427 | |
d62a17ae | 428 | /* If using "automatic" RT, we only care about the local-admin |
429 | * sub-field. | |
430 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
431 | */ | |
432 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
433 | if (!is_import_rt_configured(vpn)) | |
434 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 435 | |
d62a17ae | 436 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 437 | if (irt) |
d62a17ae | 438 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
439 | /* Already mapped. */ | |
440 | return; | |
128ea8ab | 441 | |
d62a17ae | 442 | if (!irt) { |
443 | irt = import_rt_new(bgp, &eval_tmp); | |
444 | assert(irt); | |
445 | } | |
128ea8ab | 446 | |
d62a17ae | 447 | /* Add VNI to the hash list for this RT. */ |
448 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 449 | } |
450 | ||
451 | /* | |
452 | * Unmap specified VNI from specified RT. If there are no other | |
453 | * VNIs for this RT, then the RT hash is deleted. | |
454 | */ | |
d62a17ae | 455 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
456 | struct irt_node *irt) | |
14c1a7bf | 457 | { |
d62a17ae | 458 | /* Delete VNI from hash list for this RT. */ |
459 | listnode_delete(irt->vnis, vpn); | |
460 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 461 | import_rt_free(bgp, irt); |
462 | } | |
14c1a7bf | 463 | } |
464 | ||
0ca10580 | 465 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 466 | const struct prefix_evpn *p, |
0ca10580 CS |
467 | struct attr *attr, uint8_t flags) |
468 | { | |
469 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
470 | ||
471 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
472 | if (!bgp_vrf) | |
473 | return; | |
474 | ||
b96cafa3 CS |
475 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
476 | return; | |
477 | ||
478 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
479 | * in case of route is self MAC-IP, | |
480 | * advertise-pip and advertise-svi-ip features | |
481 | * are enabled. | |
482 | * Otherwise, for all host MAC-IP route's | |
27727001 | 483 | * copy anycast RMAC. |
b96cafa3 CS |
484 | */ |
485 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
486 | && bgp_vrf->evpn_info->advertise_pip && | |
487 | bgp_vrf->evpn_info->is_anycast_mac) { | |
488 | /* copy sys rmac */ | |
489 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
490 | ETH_ALEN); | |
491 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
492 | attr->mp_nexthop_global_in = | |
493 | bgp_vrf->evpn_info->pip_ip; | |
494 | } else | |
495 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 496 | } |
b96cafa3 | 497 | |
128ea8ab | 498 | /* |
499 | * Create RT extended community automatically from passed information: | |
500 | * of the form AS:VNI. | |
501 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
502 | * the need is to get a RT value that will be unique across different | |
503 | * VNIs but the same across routers (in the same AS) for a particular | |
504 | * VNI. | |
505 | */ | |
c581d8b0 | 506 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 507 | { |
d62a17ae | 508 | struct ecommunity_val eval; |
b90d4580 CS |
509 | struct ecommunity *ecomadd, *ecom; |
510 | bool ecom_found = false; | |
511 | struct listnode *node; | |
128ea8ab | 512 | |
bf1061d8 VB |
513 | if (bgp->advertise_autort_rfc8365) |
514 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 515 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 516 | |
d62a17ae | 517 | ecomadd = ecommunity_new(); |
1207a5bc | 518 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
519 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
520 | if (ecommunity_cmp(ecomadd, ecom)) | |
521 | ecom_found = true; | |
522 | ||
523 | if (!ecom_found) | |
524 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
525 | else |
526 | ecommunity_free(&ecomadd); | |
128ea8ab | 527 | } |
14c1a7bf | 528 | |
529 | /* | |
128ea8ab | 530 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
531 | * creation of a VNI. | |
532 | */ | |
d62a17ae | 533 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 534 | { |
d62a17ae | 535 | bgp_evpn_derive_auto_rd(bgp, vpn); |
536 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
537 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 538 | } |
539 | ||
1ec31309 | 540 | /* |
541 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
542 | */ | |
543 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
544 | { | |
545 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
546 | return; | |
547 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
548 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
549 | } | |
550 | ||
09319b4e DS |
551 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
552 | safi_t safi, | |
553 | const struct prefix_evpn *evp, | |
554 | struct prefix_rd *prd) | |
c44ab6f1 AK |
555 | { |
556 | struct prefix_evpn global_p; | |
557 | ||
558 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
559 | /* prefix in the global table doesn't include the VTEP-IP so | |
560 | * we need to create a different copy of the prefix | |
561 | */ | |
562 | evpn_type1_prefix_global_copy(&global_p, evp); | |
563 | evp = &global_p; | |
564 | } | |
565 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
566 | } | |
567 | ||
09319b4e DS |
568 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
569 | safi_t safi, | |
570 | const struct prefix_evpn *evp, | |
571 | struct prefix_rd *prd) | |
c44ab6f1 AK |
572 | { |
573 | struct prefix_evpn global_p; | |
574 | ||
575 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
576 | /* prefix in the global table doesn't include the VTEP-IP so | |
577 | * we need to create a different copy of the prefix | |
578 | */ | |
579 | evpn_type1_prefix_global_copy(&global_p, evp); | |
580 | evp = &global_p; | |
581 | } | |
582 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
583 | } | |
584 | ||
128ea8ab | 585 | /* |
586 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 587 | */ |
d62a17ae | 588 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 589 | const struct prefix_evpn *p, |
d62a17ae | 590 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 591 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 592 | { |
593 | struct stream *s; | |
594 | int ipa_len; | |
595 | char buf1[ETHER_ADDR_STRLEN]; | |
596 | char buf2[INET6_ADDRSTRLEN]; | |
597 | char buf3[INET6_ADDRSTRLEN]; | |
c44ab6f1 | 598 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 599 | |
600 | /* Check socket. */ | |
601 | if (!zclient || zclient->sock < 0) | |
602 | return 0; | |
603 | ||
604 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
605 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
606 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
607 | zlog_debug( |
608 | "%s: No zebra instance to talk to, not installing remote macip", | |
609 | __func__); | |
d62a17ae | 610 | return 0; |
bb4ef1ae | 611 | } |
c44ab6f1 AK |
612 | |
613 | if (!esi) | |
614 | esi = zero_esi; | |
d62a17ae | 615 | s = zclient->obuf; |
616 | stream_reset(s); | |
617 | ||
996c9314 LB |
618 | zclient_create_header( |
619 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
620 | bgp->vrf_id); | |
d62a17ae | 621 | stream_putl(s, vpn->vni); |
3714a385 | 622 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 623 | /* IP address length and IP address, if any. */ |
3714a385 | 624 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 625 | stream_putl(s, 0); |
626 | else { | |
3714a385 | 627 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 628 | : IPV6_MAX_BYTELEN; |
629 | stream_putl(s, ipa_len); | |
3714a385 | 630 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 631 | } |
9c7edc03 AK |
632 | /* If the ESI is valid that becomes the nexthop; tape out the |
633 | * VTEP-IP for that case | |
c44ab6f1 | 634 | */ |
9c7edc03 | 635 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 636 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
637 | else |
638 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 639 | |
ead40654 | 640 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 641 | /* Also TX the sequence number of the best route. */ |
642 | if (add) { | |
ead40654 | 643 | stream_putc(s, flags); |
f07e1c99 | 644 | stream_putl(s, seq); |
c44ab6f1 | 645 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 646 | } |
d62a17ae | 647 | |
648 | stream_putw_at(s, 0, stream_get_endp(s)); | |
649 | ||
650 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 651 | zlog_debug( |
f07e1c99 | 652 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 653 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 654 | prefix_mac2str(&p->prefix.macip_addr.mac, |
655 | buf1, sizeof(buf1)), | |
656 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 657 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
658 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
659 | sizeof(buf2))); | |
d62a17ae | 660 | |
661 | return zclient_send_message(zclient); | |
7ef5a232 | 662 | } |
b18825eb | 663 | |
128ea8ab | 664 | /* |
665 | * Add (update) or delete remote VTEP from zebra. | |
666 | */ | |
d62a17ae | 667 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
668 | const struct prefix_evpn *p, |
669 | int flood_control, int add) | |
128ea8ab | 670 | { |
d62a17ae | 671 | struct stream *s; |
128ea8ab | 672 | |
d62a17ae | 673 | /* Check socket. */ |
674 | if (!zclient || zclient->sock < 0) | |
675 | return 0; | |
128ea8ab | 676 | |
d62a17ae | 677 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
678 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
679 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
680 | zlog_debug( |
681 | "%s: No zebra instance to talk to, not installing remote vtep", | |
682 | __func__); | |
d62a17ae | 683 | return 0; |
bb4ef1ae | 684 | } |
128ea8ab | 685 | |
d62a17ae | 686 | s = zclient->obuf; |
687 | stream_reset(s); | |
128ea8ab | 688 | |
996c9314 LB |
689 | zclient_create_header( |
690 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
691 | bgp->vrf_id); | |
d62a17ae | 692 | stream_putl(s, vpn->vni); |
3714a385 | 693 | if (is_evpn_prefix_ipaddr_v4(p)) |
694 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
695 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 696 | flog_err( |
e50f7cfd | 697 | EC_BGP_VTEP_INVALID, |
d62a17ae | 698 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
699 | add ? "ADD" : "DEL", vpn->vni); | |
700 | return -1; | |
701 | } | |
b16dd019 | 702 | stream_putl(s, flood_control); |
128ea8ab | 703 | |
d62a17ae | 704 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 705 | |
d62a17ae | 706 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 707 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 708 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 709 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 710 | |
d62a17ae | 711 | return zclient_send_message(zclient); |
128ea8ab | 712 | } |
713 | ||
342dd0c6 | 714 | /* |
715 | * Build extended communities for EVPN prefix route. | |
716 | */ | |
717 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
718 | struct attr *attr) | |
719 | { | |
720 | struct ecommunity ecom_encap; | |
342dd0c6 | 721 | struct ecommunity_val eval; |
722 | struct ecommunity_val eval_rmac; | |
723 | bgp_encap_types tnl_type; | |
724 | struct listnode *node, *nnode; | |
725 | struct ecommunity *ecom; | |
fab92da7 | 726 | struct ecommunity *old_ecom; |
342dd0c6 | 727 | struct list *vrf_export_rtl = NULL; |
728 | ||
729 | /* Encap */ | |
730 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
731 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
732 | encode_encap_extcomm(tnl_type, &eval); | |
733 | ecom_encap.size = 1; | |
34540b0d | 734 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 735 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 736 | |
737 | /* Add Encap */ | |
fab92da7 | 738 | if (attr->ecommunity) { |
739 | old_ecom = attr->ecommunity; | |
740 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
741 | if (!old_ecom->refcnt) | |
742 | ecommunity_free(&old_ecom); | |
743 | } else | |
744 | ecom = ecommunity_dup(&ecom_encap); | |
745 | attr->ecommunity = ecom; | |
5bbd2cc1 | 746 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 747 | |
748 | /* Add the export RTs for L3VNI/VRF */ | |
749 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
750 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
751 | attr->ecommunity = | |
752 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 753 | |
754 | /* add the router mac extended community */ | |
755 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 756 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 757 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 758 | } |
759 | ||
760 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
761 | } | |
762 | ||
128ea8ab | 763 | /* |
1ec31309 | 764 | * Build extended communities for EVPN route. |
765 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
766 | * and ENCAP extended communities are applicable for all routes. | |
767 | * The default gateway extended community and MAC mobility (sticky) extended | |
768 | * community are added as needed based on passed settings - only for type-2 | |
769 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
770 | * added, if present, based on passed settings - only for non-link-local | |
771 | * type-2 routes. | |
128ea8ab | 772 | */ |
7ec156a9 | 773 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 774 | int add_l3_ecomm) |
128ea8ab | 775 | { |
d62a17ae | 776 | struct ecommunity ecom_encap; |
777 | struct ecommunity ecom_sticky; | |
ead40654 | 778 | struct ecommunity ecom_default_gw; |
68e33151 | 779 | struct ecommunity ecom_na; |
d62a17ae | 780 | struct ecommunity_val eval; |
781 | struct ecommunity_val eval_sticky; | |
ead40654 | 782 | struct ecommunity_val eval_default_gw; |
bc59a672 | 783 | struct ecommunity_val eval_rmac; |
68e33151 | 784 | struct ecommunity_val eval_na; |
9c7edc03 | 785 | bool proxy; |
68e33151 | 786 | |
d62a17ae | 787 | bgp_encap_types tnl_type; |
788 | struct listnode *node, *nnode; | |
789 | struct ecommunity *ecom; | |
d7c0a89a | 790 | uint32_t seqnum; |
7a3e76f1 | 791 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 792 | |
d62a17ae | 793 | /* Encap */ |
794 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
795 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
796 | encode_encap_extcomm(tnl_type, &eval); | |
797 | ecom_encap.size = 1; | |
34540b0d | 798 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 799 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 800 | |
d62a17ae | 801 | /* Add Encap */ |
802 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
5bbd2cc1 | 803 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 804 | |
7a3e76f1 | 805 | /* Add the export RTs for L2VNI */ |
d62a17ae | 806 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
807 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 808 | |
1ec31309 | 809 | /* Add the export RTs for L3VNI if told to - caller determines |
810 | * when this should be done. | |
523cafc4 | 811 | */ |
1ec31309 | 812 | if (add_l3_ecomm) { |
7ec156a9 MK |
813 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
814 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
815 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
816 | ecom)) | |
996c9314 LB |
817 | attr->ecommunity = ecommunity_merge( |
818 | attr->ecommunity, ecom); | |
7ec156a9 | 819 | } |
f1f8b53c | 820 | } |
7a3e76f1 | 821 | |
1ec31309 | 822 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 823 | if (attr->sticky) { |
824 | seqnum = 0; | |
825 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
826 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
827 | ecom_sticky.size = 1; | |
34540b0d | 828 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 829 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 830 | attr->ecommunity = |
831 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
832 | } | |
c85c03c7 | 833 | |
1ec31309 | 834 | /* Add RMAC, if told to. */ |
835 | if (add_l3_ecomm) { | |
bc59a672 | 836 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 837 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
838 | } |
839 | ||
1ec31309 | 840 | /* Add default gateway, if needed. */ |
ead40654 MK |
841 | if (attr->default_gw) { |
842 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
843 | encode_default_gw_extcomm(&eval_default_gw); | |
844 | ecom_default_gw.size = 1; | |
34540b0d | 845 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 846 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
996c9314 LB |
847 | attr->ecommunity = |
848 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
849 | } |
850 | ||
9c7edc03 AK |
851 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
852 | if (attr->router_flag || proxy) { | |
68e33151 | 853 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 854 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 855 | ecom_na.size = 1; |
34540b0d | 856 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 CS |
857 | ecom_na.val = (uint8_t *)eval_na.val; |
858 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
859 | &ecom_na); | |
860 | } | |
861 | ||
d62a17ae | 862 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 863 | } |
864 | ||
865 | /* | |
866 | * Add MAC mobility extended community to attribute. | |
867 | */ | |
d7c0a89a | 868 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 869 | { |
870 | struct ecommunity ecom_tmp; | |
871 | struct ecommunity_val eval; | |
d7c0a89a | 872 | uint8_t *ecom_val_ptr; |
d62a17ae | 873 | int i; |
d7c0a89a | 874 | uint8_t *pnt; |
d62a17ae | 875 | int type = 0; |
876 | int sub_type = 0; | |
877 | ||
878 | /* Build MM */ | |
879 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
880 | ||
881 | /* Find current MM ecommunity */ | |
421bb26a | 882 | ecom_val_ptr = NULL; |
d62a17ae | 883 | |
884 | if (attr->ecommunity) { | |
885 | for (i = 0; i < attr->ecommunity->size; i++) { | |
4371bf91 PG |
886 | pnt = attr->ecommunity->val + |
887 | (i * attr->ecommunity->unit_size); | |
d62a17ae | 888 | type = *pnt++; |
889 | sub_type = *pnt++; | |
890 | ||
891 | if (type == ECOMMUNITY_ENCODE_EVPN | |
892 | && sub_type | |
893 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 894 | ecom_val_ptr = |
4371bf91 PG |
895 | (attr->ecommunity->val + |
896 | (i * attr->ecommunity->unit_size)); | |
d62a17ae | 897 | break; |
898 | } | |
899 | } | |
900 | } | |
901 | ||
902 | /* Update the existing MM ecommunity */ | |
421bb26a | 903 | if (ecom_val_ptr) { |
4371bf91 PG |
904 | memcpy(ecom_val_ptr, eval.val, sizeof(char) |
905 | * attr->ecommunity->unit_size); | |
d62a17ae | 906 | } |
907 | /* Add MM to existing */ | |
908 | else { | |
909 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
910 | ecom_tmp.size = 1; | |
34540b0d | 911 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 912 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 913 | |
f9a78910 DS |
914 | if (attr->ecommunity) |
915 | attr->ecommunity = | |
916 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
917 | else | |
918 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 919 | } |
128ea8ab | 920 | } |
921 | ||
922 | /* Install EVPN route into zebra. */ | |
d62a17ae | 923 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
924 | const struct prefix_evpn *p, |
925 | struct bgp_path_info *pi) | |
128ea8ab | 926 | { |
d62a17ae | 927 | int ret; |
d594a14c | 928 | uint8_t flags; |
b16dd019 | 929 | int flood_control; |
9c7edc03 | 930 | uint32_t seq; |
128ea8ab | 931 | |
d594a14c AK |
932 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
933 | flags = 0; | |
9c7edc03 AK |
934 | |
935 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
936 | if (pi->attr->sticky) | |
937 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
938 | if (pi->attr->default_gw) | |
939 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
940 | if (is_evpn_prefix_ipaddr_v6(p) && | |
941 | pi->attr->router_flag) | |
942 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
943 | ||
944 | seq = mac_mobility_seqnum(pi->attr); | |
945 | /* if local ES notify zebra that this is a sync path */ | |
946 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
947 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
948 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
949 | SET_FLAG(flags, | |
950 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
951 | } | |
952 | } else { | |
953 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
954 | return 0; | |
955 | ||
956 | /* if a local path is being turned around and sent | |
957 | * to zebra it is because it is a sync path on | |
958 | * a local ES | |
959 | */ | |
960 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
961 | /* supply the highest peer seq number to zebra | |
962 | * for MM seq syncing | |
963 | */ | |
964 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
965 | /* if any of the paths from the peer have the ROUTER | |
966 | * flag set install the local entry as a router entry | |
967 | */ | |
968 | if (is_evpn_prefix_ipaddr_v6(p) && | |
969 | (pi->attr->es_flags & | |
970 | ATTR_ES_PEER_ROUTER)) | |
971 | SET_FLAG(flags, | |
972 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
973 | ||
974 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
975 | SET_FLAG(flags, | |
976 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
977 | } | |
978 | ||
d594a14c | 979 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
980 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
981 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
982 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
983 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 984 | } else { |
2a3f51cf | 985 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
986 | case PMSI_TNLTYPE_INGR_REPL: |
987 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
988 | break; | |
989 | ||
990 | case PMSI_TNLTYPE_PIM_SM: | |
991 | flood_control = VXLAN_FLOOD_PIM_SM; | |
992 | break; | |
993 | ||
994 | default: | |
995 | flood_control = VXLAN_FLOOD_DISABLED; | |
996 | break; | |
997 | } | |
998 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 999 | } |
128ea8ab | 1000 | |
d62a17ae | 1001 | return ret; |
128ea8ab | 1002 | } |
1003 | ||
1004 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1005 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1006 | const struct prefix_evpn *p, |
d62a17ae | 1007 | struct in_addr remote_vtep_ip) |
128ea8ab | 1008 | { |
d62a17ae | 1009 | int ret; |
128ea8ab | 1010 | |
d62a17ae | 1011 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1012 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1013 | 0, 0, 0, NULL); |
1014 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1015 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1016 | else |
b16dd019 AK |
1017 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1018 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1019 | |
d62a17ae | 1020 | return ret; |
128ea8ab | 1021 | } |
1022 | ||
1023 | /* | |
1024 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1025 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1026 | * from peers. | |
1027 | */ | |
d62a17ae | 1028 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1029 | struct bgp_dest *dest, |
9c7edc03 AK |
1030 | struct bgp_path_info *old_local, |
1031 | struct bgp_path_info *new_select) | |
128ea8ab | 1032 | { |
9bcb3eef | 1033 | struct bgp_dest *global_dest; |
40381db7 | 1034 | struct bgp_path_info *pi; |
d62a17ae | 1035 | afi_t afi = AFI_L2VPN; |
1036 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1037 | |
9c7edc03 | 1038 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1039 | char esi_buf[ESI_STR_LEN]; |
1040 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1041 | struct prefix_evpn *evp = |
1042 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1043 | |
2dbe669b DA |
1044 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1045 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1046 | sizeof(esi_buf)), | |
1047 | new_select ? esi_to_str(&new_select->attr->esi, | |
1048 | esi_buf2, sizeof(esi_buf2)) | |
1049 | : ""); | |
9c7edc03 AK |
1050 | } |
1051 | ||
d62a17ae | 1052 | /* Locate route node in the global EVPN routing table. Note that |
1053 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1054 | * L3VPN routes. | |
1055 | */ | |
c44ab6f1 AK |
1056 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1057 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1058 | &vpn->prd); | |
9bcb3eef | 1059 | if (global_dest) { |
d62a17ae | 1060 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1061 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1062 | |
d62a17ae | 1063 | /* Schedule for processing - withdraws to peers happen from |
1064 | * this table. | |
1065 | */ | |
40381db7 | 1066 | if (pi) |
9bcb3eef DS |
1067 | bgp_process(bgp, global_dest, afi, safi); |
1068 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1069 | } |
128ea8ab | 1070 | |
d62a17ae | 1071 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1072 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1073 | } |
1074 | ||
1075 | /* | |
1076 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1077 | * if appropriate. | |
c44ab6f1 | 1078 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1079 | */ |
c44ab6f1 | 1080 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1081 | struct bgp_dest *dest) |
d62a17ae | 1082 | { |
4b7e6066 DS |
1083 | struct bgp_path_info *old_select, *new_select; |
1084 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1085 | afi_t afi = AFI_L2VPN; |
1086 | safi_t safi = SAFI_EVPN; | |
1087 | int ret = 0; | |
1088 | ||
1089 | /* Compute the best path. */ | |
9bcb3eef | 1090 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1091 | afi, safi); |
1092 | old_select = old_and_new.old; | |
1093 | new_select = old_and_new.new; | |
1094 | ||
1095 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1096 | * update to zebra RIB. |
1097 | * Remote routes and SYNC route (i.e. local routes with | |
1098 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1099 | * change. | |
d62a17ae | 1100 | */ |
1101 | if (old_select && old_select == new_select | |
1102 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1103 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1104 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1105 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1106 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1107 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1108 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1109 | ret = evpn_zebra_install( |
9bcb3eef DS |
1110 | bgp, vpn, |
1111 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1112 | dest), | |
d594a14c | 1113 | old_select); |
1defdda8 | 1114 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1115 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1116 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1117 | return ret; |
1118 | } | |
1119 | ||
1120 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1121 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1122 | |
1123 | /* bestpath has changed; update relevant fields and install or uninstall | |
1124 | * into the zebra RIB. | |
1125 | */ | |
1126 | if (old_select || new_select) | |
9bcb3eef | 1127 | bgp_bump_version(dest); |
d62a17ae | 1128 | |
1129 | if (old_select) | |
9bcb3eef | 1130 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1131 | if (new_select) { |
9bcb3eef DS |
1132 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1133 | bgp_path_info_unset_flag(dest, new_select, | |
1134 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1135 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1136 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1137 | } |
1138 | ||
9c7edc03 AK |
1139 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1140 | * to zebra | |
1141 | */ | |
d62a17ae | 1142 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1143 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1144 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1145 | ret = evpn_zebra_install( |
9bcb3eef DS |
1146 | bgp, vpn, |
1147 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1148 | new_select); |
d594a14c | 1149 | |
d62a17ae | 1150 | /* If an old best existed and it was a "local" route, the only |
1151 | * reason | |
1152 | * it would be supplanted is due to MAC mobility procedures. So, | |
1153 | * we | |
1154 | * need to do an implicit delete and withdraw that route from | |
1155 | * peers. | |
1156 | */ | |
9c7edc03 AK |
1157 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1158 | old_select && old_select->peer == bgp->peer_self | |
1159 | && old_select->type == ZEBRA_ROUTE_BGP | |
1160 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1161 | && vpn) | |
1162 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1163 | old_select, new_select); | |
d62a17ae | 1164 | } else { |
1165 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1166 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1167 | ret = evpn_zebra_uninstall( |
1168 | bgp, vpn, | |
9bcb3eef DS |
1169 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1170 | dest), | |
b54892e0 | 1171 | old_select->attr->nexthop); |
d62a17ae | 1172 | } |
1173 | ||
1174 | /* Clear any route change flags. */ | |
9bcb3eef | 1175 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1176 | |
18ee8310 | 1177 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1178 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1179 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1180 | |
1181 | return ret; | |
128ea8ab | 1182 | } |
1183 | ||
9c7edc03 AK |
1184 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1185 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1186 | { |
40381db7 | 1187 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1188 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1189 | |
9bcb3eef | 1190 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1191 | tmp_pi = tmp_pi->next) { |
1192 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1193 | local_pi = tmp_pi; |
9c7edc03 AK |
1194 | break; |
1195 | } | |
d62a17ae | 1196 | } |
c85c03c7 | 1197 | |
9c7edc03 | 1198 | return local_pi; |
c85c03c7 | 1199 | } |
1200 | ||
5e53dce3 | 1201 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1202 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1203 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1204 | struct attr *attr, int *route_changed) |
342dd0c6 | 1205 | { |
1206 | struct attr *attr_new = NULL; | |
40381db7 | 1207 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1208 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1209 | struct bgp_path_info *local_pi = NULL; |
1210 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1211 | |
5424b7ba | 1212 | *route_changed = 0; |
342dd0c6 | 1213 | /* locate the local route entry if any */ |
9bcb3eef | 1214 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1215 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1216 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1217 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1218 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1219 | local_pi = tmp_pi; | |
342dd0c6 | 1220 | } |
1221 | ||
2bb9eff4 | 1222 | /* |
0437e105 | 1223 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1224 | * Otherwise see if route attr has changed |
523cafc4 | 1225 | */ |
40381db7 | 1226 | if (!local_pi) { |
342dd0c6 | 1227 | |
5424b7ba MK |
1228 | /* route has changed as this is the first entry */ |
1229 | *route_changed = 1; | |
1230 | ||
342dd0c6 | 1231 | /* Add (or update) attribute to hash. */ |
1232 | attr_new = bgp_attr_intern(attr); | |
1233 | ||
1234 | /* create the route info from attribute */ | |
40381db7 | 1235 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1236 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1237 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1238 | |
b57ba6d2 | 1239 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1240 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1241 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1242 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1243 | pi->extra->num_labels = 1; | |
342dd0c6 | 1244 | |
1245 | /* add the route entry to route node*/ | |
9bcb3eef | 1246 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1247 | } else { |
1248 | ||
40381db7 DS |
1249 | tmp_pi = local_pi; |
1250 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1251 | |
1252 | /* attribute changed */ | |
1253 | *route_changed = 1; | |
1254 | ||
342dd0c6 | 1255 | /* The attribute has changed. */ |
1256 | /* Add (or update) attribute to hash. */ | |
1257 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1258 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1259 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1260 | |
1261 | /* Restore route, if needed. */ | |
40381db7 | 1262 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1263 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1264 | |
1265 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1266 | bgp_attr_unintern(&tmp_pi->attr); |
1267 | tmp_pi->attr = attr_new; | |
1268 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1269 | } |
1270 | } | |
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1275 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1276 | struct attr *src_attr) | |
342dd0c6 | 1277 | { |
1278 | afi_t afi = AFI_L2VPN; | |
1279 | safi_t safi = SAFI_EVPN; | |
1280 | struct attr attr; | |
9bcb3eef | 1281 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1282 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1283 | int route_changed = 0; |
342dd0c6 | 1284 | |
5e53dce3 T |
1285 | bgp_evpn = bgp_get_evpn(); |
1286 | if (!bgp_evpn) | |
faafdfa8 | 1287 | return 0; |
342dd0c6 | 1288 | |
2f69f6d3 | 1289 | /* Build path attribute for this route - use the source attr, if |
1290 | * present, else treat as locally originated. | |
1291 | */ | |
1292 | if (src_attr) | |
6f4f49b2 | 1293 | attr = *src_attr; |
2f69f6d3 | 1294 | else { |
1295 | memset(&attr, 0, sizeof(struct attr)); | |
1296 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1297 | } | |
5394a276 | 1298 | |
5394a276 CS |
1299 | /* Advertise Primary IP (PIP) is enabled, send individual |
1300 | * IP (default instance router-id) as nexthop. | |
1301 | * PIP is disabled or vrr interface is not present | |
27727001 | 1302 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1303 | */ |
1304 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1305 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1306 | attr.nexthop = bgp_vrf->originator_ip; | |
1307 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1308 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1309 | } else { |
27727001 CS |
1310 | /* copy sys rmac */ |
1311 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1312 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1313 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1314 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1315 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1316 | if (bgp_debug_zebra(NULL)) |
1317 | zlog_debug( | |
1318 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1319 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1320 | } |
1321 | ||
1322 | if (bgp_debug_zebra(NULL)) { | |
1323 | char buf[ETHER_ADDR_STRLEN]; | |
1c97c9fd | 1324 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 | 1325 | |
2dbe669b DA |
1326 | zlog_debug("VRF %s type-5 route evp %pFX RMAC %s nexthop %s", |
1327 | vrf_id_to_name(bgp_vrf->vrf_id), evp, | |
5394a276 | 1328 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), |
1c97c9fd CS |
1329 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1330 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1331 | } |
1332 | ||
342dd0c6 | 1333 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1334 | |
1335 | /* Setup RT and encap extended community */ | |
1336 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1337 | ||
1338 | /* get the route node in global table */ | |
c44ab6f1 AK |
1339 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1340 | (const struct prefix_evpn *)evp, | |
1341 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1342 | assert(dest); |
342dd0c6 | 1343 | |
1344 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1345 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1346 | &route_changed); |
342dd0c6 | 1347 | |
1348 | /* schedule for processing and unlock node */ | |
5424b7ba | 1349 | if (route_changed) { |
9bcb3eef DS |
1350 | bgp_process(bgp_evpn, dest, afi, safi); |
1351 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1352 | } |
342dd0c6 | 1353 | |
1354 | /* uninten temporary */ | |
5ee65f6f | 1355 | if (!src_attr) |
1356 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1357 | return 0; |
1358 | } | |
1359 | ||
9c7edc03 | 1360 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1361 | struct bgp_dest *dest, uint32_t loc_seq, |
1362 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1363 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1364 | { |
1365 | struct bgp_path_info *tmp_pi; | |
1366 | struct bgp_path_info *second_best_path = NULL; | |
1367 | uint32_t tmp_mm_seq = 0; | |
1368 | esi_t *tmp_esi; | |
1369 | int paths_eq; | |
1370 | ||
1371 | /* find the best non-local path. a local path can only be present | |
1372 | * as best path | |
1373 | */ | |
09319b4e DS |
1374 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1375 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1376 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1377 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1378 | continue; | |
1379 | ||
1380 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1381 | second_best_path, &paths_eq)) | |
1382 | second_best_path = tmp_pi; | |
1383 | } | |
1384 | ||
1385 | if (!second_best_path) | |
1386 | return; | |
1387 | ||
1388 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1389 | /* if this has the same ES desination as the local path | |
1390 | * it is a sync path | |
1391 | */ | |
1392 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1393 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1394 | if (tmp_mm_seq < loc_seq) | |
1395 | return; | |
1396 | ||
1397 | /* we have a non-proxy path from the ES peer. */ | |
1398 | if (second_best_path->attr->es_flags & | |
1399 | ATTR_ES_PROXY_ADVERT) { | |
1400 | *proxy_from_peer = true; | |
1401 | } else { | |
1402 | *active_on_peer = true; | |
1403 | } | |
1404 | ||
1405 | if (second_best_path->attr->router_flag) | |
1406 | *peer_router = true; | |
1407 | ||
1408 | /* we use both proxy and non-proxy imports to | |
1409 | * determine the max sync sequence | |
1410 | */ | |
1411 | if (tmp_mm_seq > *max_sync_seq) | |
1412 | *max_sync_seq = tmp_mm_seq; | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1417 | * This is need for MM sequence number syncing and proxy advertisement. | |
1418 | * Note: The local path can only exist as a best path in the | |
1419 | * VPN route table. It will take precedence over all sync paths. | |
1420 | */ | |
1421 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1422 | struct bgp_dest *dest, |
1423 | struct attr *attr, | |
1424 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1425 | { |
1426 | esi_t *esi; | |
752eed47 DS |
1427 | struct prefix_evpn *evp = |
1428 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1429 | |
1430 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1431 | return; | |
1432 | ||
1433 | esi = bgp_evpn_attr_get_esi(attr); | |
1434 | if (bgp_evpn_is_esi_valid(esi)) { | |
1435 | if (setup_sync) { | |
1436 | uint32_t max_sync_seq = 0; | |
1437 | bool active_on_peer = false; | |
1438 | bool peer_router = false; | |
1439 | bool proxy_from_peer = false; | |
1440 | ||
09319b4e DS |
1441 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1442 | &max_sync_seq, &active_on_peer, | |
1443 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1444 | attr->mm_sync_seqnum = max_sync_seq; |
1445 | if (active_on_peer) | |
1446 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1447 | else | |
1448 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1449 | if (proxy_from_peer) | |
1450 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1451 | else | |
1452 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1453 | if (peer_router) | |
1454 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1455 | else | |
1456 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1457 | ||
1458 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1459 | char esi_buf[ESI_STR_LEN]; |
1460 | ||
2dbe669b DA |
1461 | zlog_debug( |
1462 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1463 | evp, | |
9c7edc03 | 1464 | esi_to_str(esi, esi_buf, |
2dbe669b | 1465 | sizeof(esi_buf)), |
9c7edc03 | 1466 | max_sync_seq, |
2dbe669b DA |
1467 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1468 | ? "peer-active " | |
1469 | : "", | |
1470 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1471 | ? "peer-proxy " | |
1472 | : "", | |
1473 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1474 | ? "peer-router " | |
1475 | : ""); | |
9c7edc03 AK |
1476 | } |
1477 | } | |
1478 | } else { | |
1479 | attr->mm_sync_seqnum = 0; | |
1480 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1481 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1482 | } | |
1483 | } | |
1484 | ||
128ea8ab | 1485 | /* |
1486 | * Create or update EVPN route entry. This could be in the VNI route table | |
1487 | * or the global route table. | |
1488 | */ | |
d62a17ae | 1489 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1490 | afi_t afi, safi_t safi, |
1491 | struct bgp_dest *dest, struct attr *attr, | |
1492 | int add, struct bgp_path_info **pi, | |
1493 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1494 | bool *old_is_sync) |
d62a17ae | 1495 | { |
40381db7 DS |
1496 | struct bgp_path_info *tmp_pi; |
1497 | struct bgp_path_info *local_pi; | |
d62a17ae | 1498 | struct attr *attr_new; |
b57ba6d2 | 1499 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1500 | uint32_t num_labels = 1; |
d62a17ae | 1501 | int route_change = 1; |
d7c0a89a | 1502 | uint8_t sticky = 0; |
b54892e0 | 1503 | const struct prefix_evpn *evp; |
d62a17ae | 1504 | |
40381db7 | 1505 | *pi = NULL; |
9bcb3eef | 1506 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1507 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1508 | |
f07e1c99 | 1509 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1510 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1511 | |
1512 | /* If route doesn't exist already, create a new one, if told to. | |
1513 | * Otherwise act based on whether the attributes of the route have | |
1514 | * changed or not. | |
1515 | */ | |
40381db7 | 1516 | if (!local_pi && !add) |
d62a17ae | 1517 | return 0; |
1518 | ||
9c7edc03 AK |
1519 | if (old_is_sync && local_pi) |
1520 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1521 | ||
1522 | /* if a local path is being added with a non-zero esi look | |
1523 | * for SYNC paths from ES peers and bubble up the sync-info | |
1524 | */ | |
26c03e43 | 1525 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1526 | |
f07e1c99 | 1527 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1528 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1529 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1530 | |
40381db7 | 1531 | if (!local_pi) { |
d62a17ae | 1532 | /* Add (or update) attribute to hash. */ |
1533 | attr_new = bgp_attr_intern(attr); | |
1534 | ||
1535 | /* Extract MAC mobility sequence number, if any. */ | |
1536 | attr_new->mm_seqnum = | |
1537 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1538 | attr_new->sticky = sticky; | |
1539 | ||
1540 | /* Create new route with its attribute. */ | |
40381db7 | 1541 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1542 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1543 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1544 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1545 | |
1546 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1547 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1548 | |
1549 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1550 | * Only attach second label if we are advertising two labels for | |
1551 | * type-2 routes. | |
1552 | */ | |
996c9314 LB |
1553 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1554 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1555 | vni_t l3vni; |
1556 | ||
1557 | l3vni = bgpevpn_get_l3vni(vpn); | |
1558 | if (l3vni) { | |
1559 | vni2label(l3vni, &label[1]); | |
1560 | num_labels++; | |
1561 | } | |
1562 | } | |
d62a17ae | 1563 | |
40381db7 DS |
1564 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1565 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1566 | /* Mark route as self type-2 route */ |
1567 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1568 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1569 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1570 | } else { |
40381db7 DS |
1571 | tmp_pi = local_pi; |
1572 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1573 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1574 | route_change = 0; |
1575 | else { | |
c48d9f5f MK |
1576 | /* |
1577 | * The attributes have changed, type-2 routes needs to | |
1578 | * be advertised with right labels. | |
1579 | */ | |
1580 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1581 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1582 | && CHECK_FLAG(vpn->flags, | |
1583 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1584 | vni_t l3vni; |
1585 | ||
1586 | l3vni = bgpevpn_get_l3vni(vpn); | |
1587 | if (l3vni) { | |
1588 | vni2label(l3vni, &label[1]); | |
1589 | num_labels++; | |
1590 | } | |
1591 | } | |
40381db7 DS |
1592 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1593 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1594 | |
d62a17ae | 1595 | /* The attribute has changed. */ |
1596 | /* Add (or update) attribute to hash. */ | |
1597 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1598 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1599 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1600 | |
f07e1c99 | 1601 | /* Extract MAC mobility sequence number, if any. */ |
1602 | attr_new->mm_seqnum = | |
1603 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1604 | attr_new->sticky = sticky; | |
1605 | ||
d62a17ae | 1606 | /* Restore route, if needed. */ |
40381db7 | 1607 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1608 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1609 | |
1610 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1611 | bgp_attr_unintern(&tmp_pi->attr); |
1612 | tmp_pi->attr = attr_new; | |
1613 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1614 | } |
1615 | } | |
1616 | ||
26c03e43 AK |
1617 | /* MAC-IP routes in the VNI route table are linked to the |
1618 | * destination ES | |
1619 | */ | |
1620 | if (route_change && vpn_rt | |
1621 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1622 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1623 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1624 | ||
d62a17ae | 1625 | /* Return back the route entry. */ |
40381db7 | 1626 | *pi = tmp_pi; |
d62a17ae | 1627 | return route_change; |
128ea8ab | 1628 | } |
1629 | ||
ec0ab544 | 1630 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1631 | struct bgpevpn *vpn, |
1632 | struct bgp_dest *dest) | |
ec0ab544 AK |
1633 | { |
1634 | struct bgp_path_info *tmp_ri; | |
1635 | struct bgp_path_info *curr_select = NULL; | |
1636 | ||
9bcb3eef DS |
1637 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1638 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1639 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1640 | curr_select = tmp_ri; | |
1641 | break; | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1646 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1647 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1648 | evpn_zebra_install(bgp, vpn, | |
1649 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1650 | curr_select); | |
ec0ab544 AK |
1651 | } |
1652 | ||
6d8c603a AK |
1653 | /* |
1654 | * If the local route was not selected evict it and tell zebra to re-add | |
1655 | * the best remote dest. | |
1656 | * | |
1657 | * Typically a local path added by zebra is expected to be selected as | |
1658 | * best. In which case when a remote path wins as best (later) | |
1659 | * evpn_route_select_install itself evicts the older-local-best path. | |
1660 | * | |
1661 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1662 | * is possible that the local path is no longer the "older" best path. | |
1663 | * It is a path that was never designated as best and hence requires | |
1664 | * additional handling to prevent bgp from injecting and holding on to a | |
1665 | * non-best local path. | |
1666 | */ | |
1667 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1668 | struct bgpevpn *vpn, | |
9bcb3eef | 1669 | struct bgp_dest *dest, |
9a8897aa | 1670 | struct bgp_path_info *local_pi) |
6d8c603a | 1671 | { |
6d8c603a | 1672 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1673 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1674 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1675 | dest); |
b54892e0 | 1676 | |
9c7edc03 | 1677 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1678 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1679 | |
1680 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1681 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1682 | } |
1683 | ||
128ea8ab | 1684 | /* |
1685 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1686 | * and schedule for processing. | |
1687 | */ | |
d62a17ae | 1688 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1689 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1690 | uint32_t seq, esi_t *esi) |
128ea8ab | 1691 | { |
9bcb3eef | 1692 | struct bgp_dest *dest; |
d62a17ae | 1693 | struct attr attr; |
1694 | struct attr *attr_new; | |
1ec31309 | 1695 | int add_l3_ecomm = 0; |
40381db7 | 1696 | struct bgp_path_info *pi; |
d62a17ae | 1697 | afi_t afi = AFI_L2VPN; |
1698 | safi_t safi = SAFI_EVPN; | |
1699 | int route_change; | |
9c7edc03 | 1700 | bool old_is_sync = false; |
128ea8ab | 1701 | |
d62a17ae | 1702 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1703 | |
d62a17ae | 1704 | /* Build path-attribute for this route. */ |
1705 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1706 | attr.nexthop = vpn->originator_ip; | |
1707 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1708 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1709 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1710 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1711 | attr.router_flag = CHECK_FLAG(flags, |
1712 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1713 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1714 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1715 | ||
1716 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1717 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1718 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1719 | } | |
1720 | ||
be41eb68 | 1721 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1722 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1723 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1724 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1725 | } |
be41eb68 | 1726 | |
9c7edc03 AK |
1727 | if (bgp_debug_zebra(NULL)) { |
1728 | char buf[ETHER_ADDR_STRLEN]; | |
9c7edc03 AK |
1729 | char buf3[ESI_STR_LEN]; |
1730 | ||
23d0a753 | 1731 | zlog_debug( |
2dbe669b | 1732 | "VRF %s vni %u type-2 route evp %pFX RMAC %s nexthop %pI4 esi %s", |
23d0a753 DA |
1733 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1734 | : " ", | |
2dbe669b | 1735 | vpn->vni, p, |
23d0a753 DA |
1736 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), |
1737 | &attr.mp_nexthop_global_in, | |
1738 | esi_to_str(esi, buf3, sizeof(buf3))); | |
9c7edc03 | 1739 | } |
1ec31309 | 1740 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1741 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1742 | uint8_t af_flags = 0; | |
1743 | ||
1744 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1745 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1746 | ||
1747 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1748 | } |
1749 | ||
a21bd7a3 | 1750 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1751 | |
1ec31309 | 1752 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1753 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1754 | * these routes. | |
1755 | */ | |
1756 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1757 | (is_evpn_prefix_ipaddr_v4(p) || |
1758 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1759 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1760 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1761 | add_l3_ecomm = 1; |
1762 | ||
1763 | /* Set up extended community. */ | |
1764 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1765 | |
d62a17ae | 1766 | /* First, create (or fetch) route node within the VNI. */ |
1767 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1768 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1769 | |
d62a17ae | 1770 | /* Create or update route entry. */ |
9bcb3eef | 1771 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1772 | 1, &pi, flags, seq, |
1773 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1774 | assert(pi); |
1775 | attr_new = pi->attr; | |
128ea8ab | 1776 | |
6d8c603a AK |
1777 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1778 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1779 | |
1780 | /* Perform route selection. Normally, the local route in the | |
1781 | * VNI is expected to win and be the best route. However, if | |
1782 | * there is a race condition where a host moved from local to | |
1783 | * remote and the remote route was received in BGP just prior | |
1784 | * to the local MACIP notification from zebra, the remote | |
1785 | * route would win, and we should evict the defunct local route | |
1786 | * and (re)install the remote route into zebra. | |
1787 | */ | |
9bcb3eef | 1788 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1789 | /* |
9a8897aa AK |
1790 | * If the new local route was not selected evict it and tell zebra |
1791 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1792 | * routes. | |
6d8c603a | 1793 | */ |
9c7edc03 | 1794 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1795 | route_change = 0; |
9c7edc03 AK |
1796 | } else { |
1797 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1798 | route_change = 0; | |
1799 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1800 | } else { | |
1801 | bool new_is_sync; | |
1802 | ||
1803 | /* If the local path already existed and is still the | |
1804 | * best path we need to also check if it transitioned | |
1805 | * from being a sync path to a non-sync path. If it | |
1806 | * it did we need to notify zebra that the sync-path | |
1807 | * has been removed. | |
1808 | */ | |
1809 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1810 | if (!new_is_sync && old_is_sync) | |
1811 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1812 | } | |
9a8897aa | 1813 | } |
6d8c603a AK |
1814 | bgp_path_info_unlock(pi); |
1815 | ||
9bcb3eef | 1816 | bgp_dest_unlock_node(dest); |
128ea8ab | 1817 | |
d62a17ae | 1818 | /* If this is a new route or some attribute has changed, export the |
1819 | * route to the global table. The route will be advertised to peers | |
1820 | * from there. Note that this table is a 2-level tree (RD-level + | |
1821 | * Prefix-level) similar to L3VPN routes. | |
1822 | */ | |
1823 | if (route_change) { | |
40381db7 | 1824 | struct bgp_path_info *global_pi; |
128ea8ab | 1825 | |
c44ab6f1 AK |
1826 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1827 | (const struct prefix_evpn *)p, | |
1828 | &vpn->prd); | |
9bcb3eef | 1829 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1830 | &global_pi, flags, seq, |
1831 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1832 | |
d62a17ae | 1833 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1834 | bgp_process(bgp, dest, afi, safi); |
1835 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1836 | } |
128ea8ab | 1837 | |
d62a17ae | 1838 | /* Unintern temporary. */ |
1839 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1840 | |
d62a17ae | 1841 | return 0; |
128ea8ab | 1842 | } |
1843 | ||
50f74cf1 | 1844 | /* |
1845 | * Delete EVPN route entry. | |
1846 | * The entry can be in ESI/VNI table or the global table. | |
1847 | */ | |
185fb14a | 1848 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1849 | struct bgp_dest *dest, |
40381db7 | 1850 | struct bgp_path_info **pi) |
342dd0c6 | 1851 | { |
40381db7 | 1852 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1853 | |
40381db7 | 1854 | *pi = NULL; |
342dd0c6 | 1855 | |
50f74cf1 | 1856 | /* Now, find matching route. */ |
9bcb3eef | 1857 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1858 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1859 | if (tmp_pi->peer == bgp->peer_self |
1860 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1861 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1862 | break; |
1863 | ||
40381db7 | 1864 | *pi = tmp_pi; |
342dd0c6 | 1865 | |
1866 | /* Mark route for delete. */ | |
40381db7 | 1867 | if (tmp_pi) |
9bcb3eef | 1868 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1869 | } |
1870 | ||
1871 | /* Delete EVPN type5 route */ | |
996c9314 | 1872 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1873 | { |
1874 | afi_t afi = AFI_L2VPN; | |
1875 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1876 | struct bgp_dest *dest = NULL; |
40381db7 | 1877 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1878 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1879 | |
5e53dce3 T |
1880 | bgp_evpn = bgp_get_evpn(); |
1881 | if (!bgp_evpn) | |
faafdfa8 | 1882 | return 0; |
342dd0c6 | 1883 | |
1884 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1885 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1886 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1887 | if (!dest) |
342dd0c6 | 1888 | return 0; |
1889 | ||
9bcb3eef | 1890 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1891 | if (pi) |
9bcb3eef DS |
1892 | bgp_process(bgp_evpn, dest, afi, safi); |
1893 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1894 | return 0; |
1895 | } | |
1896 | ||
128ea8ab | 1897 | /* |
1898 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1899 | * schedule for processing. | |
1900 | */ | |
d62a17ae | 1901 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1902 | struct prefix_evpn *p) | |
1903 | { | |
9bcb3eef | 1904 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1905 | struct bgp_path_info *pi; |
d62a17ae | 1906 | afi_t afi = AFI_L2VPN; |
1907 | safi_t safi = SAFI_EVPN; | |
1908 | ||
1909 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1910 | * there | |
1911 | * is nothing further to do. | |
1912 | */ | |
1913 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1914 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1915 | if (!dest) | |
d62a17ae | 1916 | return 0; |
1917 | ||
1918 | /* Next, locate route node in the global EVPN routing table. Note that | |
1919 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1920 | * L3VPN routes. | |
1921 | */ | |
c44ab6f1 AK |
1922 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1923 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1924 | if (global_dest) { |
d62a17ae | 1925 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1926 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1927 | |
1928 | /* Schedule for processing - withdraws to peers happen from | |
1929 | * this table. | |
1930 | */ | |
40381db7 | 1931 | if (pi) |
9bcb3eef DS |
1932 | bgp_process(bgp, global_dest, afi, safi); |
1933 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1934 | } |
1935 | ||
1936 | /* Delete route entry in the VNI route table. This can just be removed. | |
1937 | */ | |
9bcb3eef | 1938 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1939 | if (pi) { |
9bcb3eef DS |
1940 | bgp_path_info_reap(dest, pi); |
1941 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1942 | } |
9bcb3eef | 1943 | bgp_dest_unlock_node(dest); |
d62a17ae | 1944 | |
1945 | return 0; | |
128ea8ab | 1946 | } |
1947 | ||
9c7edc03 | 1948 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
09319b4e DS |
1949 | struct bgpevpn *vpn, |
1950 | struct bgp_dest *dest, | |
1951 | struct bgp_path_info *local_pi, | |
1952 | const char *caller) | |
9c7edc03 AK |
1953 | { |
1954 | afi_t afi = AFI_L2VPN; | |
1955 | safi_t safi = SAFI_EVPN; | |
1956 | struct bgp_path_info *pi; | |
1957 | struct attr attr; | |
1958 | struct attr *attr_new; | |
1959 | uint32_t seq; | |
1960 | int add_l3_ecomm = 0; | |
09319b4e | 1961 | struct bgp_dest *global_dest; |
9c7edc03 | 1962 | struct bgp_path_info *global_pi; |
752eed47 DS |
1963 | struct prefix_evpn *evp = |
1964 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1965 | int route_change; |
1966 | bool old_is_sync = false; | |
1967 | ||
1968 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1969 | return; | |
1970 | ||
1971 | /* | |
1972 | * Build attribute per local route as the MAC mobility and | |
1973 | * some other values could differ for different routes. The | |
1974 | * attributes will be shared in the hash table. | |
1975 | */ | |
1976 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1977 | attr.nexthop = vpn->originator_ip; | |
1978 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1979 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1980 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
1981 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
1982 | attr.es_flags = local_pi->attr->es_flags; | |
1983 | if (local_pi->attr->default_gw) { | |
1984 | attr.default_gw = 1; | |
1985 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1986 | attr.router_flag = 1; | |
1987 | } | |
1988 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
1989 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
1990 | local_pi->extra->af_flags); | |
1991 | vni2label(vpn->vni, &(attr.label)); | |
1992 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1993 | * using L3 VNI for type-2 routes also. | |
1994 | */ | |
1995 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
1996 | !IN6_IS_ADDR_LINKLOCAL( | |
1997 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
1998 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && | |
1999 | bgpevpn_get_l3vni(vpn)) | |
2000 | add_l3_ecomm = 1; | |
2001 | ||
2002 | /* Set up extended community. */ | |
2003 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2004 | seq = mac_mobility_seqnum(local_pi->attr); | |
2005 | ||
2006 | if (bgp_debug_zebra(NULL)) { | |
2007 | char buf[ETHER_ADDR_STRLEN]; | |
9c7edc03 AK |
2008 | char buf3[ESI_STR_LEN]; |
2009 | ||
23d0a753 | 2010 | zlog_debug( |
2dbe669b | 2011 | "VRF %s vni %u evp %pFX RMAC %s nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2012 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2013 | : " ", | |
2dbe669b | 2014 | vpn->vni, evp, |
23d0a753 DA |
2015 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), |
2016 | &attr.mp_nexthop_global_in, | |
2017 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), | |
2018 | attr.es_flags, caller); | |
9c7edc03 AK |
2019 | } |
2020 | ||
2021 | /* Update the route entry. */ | |
09319b4e DS |
2022 | route_change = update_evpn_route_entry( |
2023 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2024 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2025 | |
2026 | assert(pi); | |
2027 | attr_new = pi->attr; | |
2028 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2029 | bgp_path_info_lock(pi); | |
2030 | ||
2031 | /* Perform route selection. Normally, the local route in the | |
2032 | * VNI is expected to win and be the best route. However, | |
2033 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2034 | * that causes best selection to be based on next hop), a | |
2035 | * remote route could win. If the local route is the best, | |
2036 | * ensure it is updated in the global EVPN route table and | |
2037 | * advertised to peers; otherwise, ensure it is evicted and | |
2038 | * (re)install the remote route into zebra. | |
2039 | */ | |
09319b4e | 2040 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2041 | |
2042 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2043 | route_change = 0; | |
2044 | } else { | |
2045 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2046 | route_change = 0; | |
09319b4e | 2047 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2048 | } else { |
2049 | bool new_is_sync; | |
2050 | ||
2051 | /* If the local path already existed and is still the | |
2052 | * best path we need to also check if it transitioned | |
2053 | * from being a sync path to a non-sync path. If it | |
2054 | * it did we need to notify zebra that the sync-path | |
2055 | * has been removed. | |
2056 | */ | |
2057 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2058 | if (!new_is_sync && old_is_sync) | |
2059 | evpn_zebra_uninstall(bgp, vpn, | |
2060 | evp, zero_vtep_ip); | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | ||
2065 | /* unlock pi */ | |
2066 | bgp_path_info_unlock(pi); | |
2067 | ||
2068 | if (route_change) { | |
2069 | /* Update route in global routing table. */ | |
09319b4e DS |
2070 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2071 | safi, evp, &vpn->prd); | |
2072 | assert(global_dest); | |
2073 | update_evpn_route_entry( | |
2074 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2075 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2076 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2077 | |
2078 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2079 | bgp_process(bgp, global_dest, afi, safi); |
2080 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2081 | } |
2082 | ||
2083 | /* Unintern temporary. */ | |
2084 | aspath_unintern(&attr.aspath); | |
2085 | } | |
2086 | ||
128ea8ab | 2087 | /* |
2088 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2089 | * be scheduled for advertise to peers. | |
2090 | */ | |
d62a17ae | 2091 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2092 | { | |
9bcb3eef | 2093 | struct bgp_dest *dest; |
9c7edc03 | 2094 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2095 | |
2096 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2097 | * routes updated, update corresponding entry in the global table too. | |
2098 | */ | |
9bcb3eef | 2099 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2100 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2101 | const struct prefix_evpn *evp = |
2102 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2103 | |
2104 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2105 | continue; | |
2106 | ||
f07e1c99 | 2107 | /* Identify local route. */ |
9bcb3eef | 2108 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2109 | tmp_pi = tmp_pi->next) { |
40381db7 | 2110 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2111 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2112 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2113 | break; |
7ec156a9 | 2114 | } |
d62a17ae | 2115 | |
40381db7 | 2116 | if (!tmp_pi) |
d62a17ae | 2117 | continue; |
2118 | ||
9c7edc03 AK |
2119 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2120 | __func__); | |
f07e1c99 | 2121 | } |
d62a17ae | 2122 | |
2123 | return 0; | |
128ea8ab | 2124 | } |
2125 | ||
2126 | /* | |
2127 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2128 | * global routing table. These are also scheduled for withdraw from peers. | |
2129 | */ | |
d62a17ae | 2130 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2131 | { |
d62a17ae | 2132 | afi_t afi; |
2133 | safi_t safi; | |
9bcb3eef | 2134 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2135 | struct bgp_table *table; |
40381db7 | 2136 | struct bgp_path_info *pi; |
128ea8ab | 2137 | |
d62a17ae | 2138 | afi = AFI_L2VPN; |
2139 | safi = SAFI_EVPN; | |
128ea8ab | 2140 | |
9bcb3eef DS |
2141 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2142 | (struct prefix *)&vpn->prd); | |
2143 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2144 | table = bgp_dest_get_bgp_table_info(rddest); | |
2145 | for (dest = bgp_table_top(table); dest; | |
2146 | dest = bgp_route_next(dest)) { | |
2147 | const struct prefix_evpn *evp = | |
2148 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2149 | dest); | |
128ea8ab | 2150 | |
d62a17ae | 2151 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2152 | continue; | |
128ea8ab | 2153 | |
9bcb3eef | 2154 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2155 | if (pi) |
9bcb3eef | 2156 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2157 | } |
2158 | } | |
128ea8ab | 2159 | |
d62a17ae | 2160 | /* Unlock RD node. */ |
9bcb3eef DS |
2161 | if (rddest) |
2162 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2163 | |
d62a17ae | 2164 | return 0; |
128ea8ab | 2165 | } |
2166 | ||
2167 | /* | |
2168 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2169 | * table as well as the per-VNI route table. | |
2170 | */ | |
d62a17ae | 2171 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2172 | { |
d62a17ae | 2173 | afi_t afi; |
2174 | safi_t safi; | |
9bcb3eef | 2175 | struct bgp_dest *dest; |
40381db7 | 2176 | struct bgp_path_info *pi; |
128ea8ab | 2177 | |
d62a17ae | 2178 | afi = AFI_L2VPN; |
2179 | safi = SAFI_EVPN; | |
128ea8ab | 2180 | |
d62a17ae | 2181 | /* First, walk the global route table for this VNI's type-2 local |
2182 | * routes. | |
2183 | * EVPN routes are a 2-level table, first get the RD table. | |
2184 | */ | |
2185 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2186 | |
d62a17ae | 2187 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2188 | for (dest = bgp_table_top(vpn->route_table); dest; |
2189 | dest = bgp_route_next(dest)) { | |
2190 | const struct prefix_evpn *evp = | |
2191 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2192 | |
d62a17ae | 2193 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2194 | continue; | |
128ea8ab | 2195 | |
9bcb3eef | 2196 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2197 | |
d62a17ae | 2198 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2199 | if (pi) |
9bcb3eef | 2200 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2201 | } |
128ea8ab | 2202 | |
d62a17ae | 2203 | return 0; |
128ea8ab | 2204 | } |
2205 | ||
2206 | /* | |
2207 | * Delete all routes in the per-VNI route table. | |
2208 | */ | |
d62a17ae | 2209 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2210 | { |
9bcb3eef | 2211 | struct bgp_dest *dest; |
40381db7 | 2212 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2213 | |
d62a17ae | 2214 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2215 | for (dest = bgp_table_top(vpn->route_table); dest; |
2216 | dest = bgp_route_next(dest)) { | |
2217 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2218 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2219 | bgp_path_info_delete(dest, pi); |
2220 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2221 | } |
2222 | } | |
128ea8ab | 2223 | |
d62a17ae | 2224 | return 0; |
128ea8ab | 2225 | } |
2226 | ||
833b8a50 AK |
2227 | /* BUM traffic flood mode per-l2-vni */ |
2228 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2229 | struct bgpevpn *vpn) | |
2230 | { | |
2231 | /* if flooding has been globally disabled per-vni mode is | |
2232 | * not relevant | |
2233 | */ | |
2234 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2235 | return VXLAN_FLOOD_DISABLED; | |
2236 | ||
2237 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2238 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2239 | return VXLAN_FLOOD_PIM_SM; | |
2240 | ||
2241 | /* default is ingress replication */ | |
2242 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2243 | } | |
2244 | ||
128ea8ab | 2245 | /* |
2246 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2247 | * export RT getting modified or change to tunnel IP. Note that these | |
2248 | * situations need the route in the per-VNI table as well as the global | |
2249 | * table to be updated (as attributes change). | |
2250 | */ | |
0ca10580 | 2251 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2252 | { |
d62a17ae | 2253 | int ret; |
2254 | struct prefix_evpn p; | |
128ea8ab | 2255 | |
d62a17ae | 2256 | /* Update and advertise the type-3 route (only one) followed by the |
2257 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2258 | * |
2259 | * RT-3 only if doing head-end replication | |
d62a17ae | 2260 | */ |
833b8a50 AK |
2261 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2262 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2263 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2264 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2265 | if (ret) |
2266 | return ret; | |
2267 | } | |
128ea8ab | 2268 | |
d62a17ae | 2269 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2270 | } |
2271 | ||
2272 | /* | |
2273 | * Delete (and withdraw) local routes for specified VNI from the global | |
2274 | * table and per-VNI table. After this, remove all other routes from | |
2275 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2276 | * (advertise-all-vni) being disabled. | |
2277 | */ | |
d62a17ae | 2278 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2279 | { |
d62a17ae | 2280 | int ret; |
2281 | struct prefix_evpn p; | |
128ea8ab | 2282 | |
d62a17ae | 2283 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2284 | * followed by type-3 routes (only one) - for this VNI. | |
2285 | */ | |
2286 | ret = delete_all_type2_routes(bgp, vpn); | |
2287 | if (ret) | |
2288 | return ret; | |
128ea8ab | 2289 | |
d62a17ae | 2290 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2291 | ret = delete_evpn_route(bgp, vpn, &p); | |
2292 | if (ret) | |
2293 | return ret; | |
128ea8ab | 2294 | |
d62a17ae | 2295 | /* Delete all routes from the per-VNI table. */ |
2296 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2297 | } |
2298 | ||
76d07c7a AK |
2299 | /* |
2300 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2301 | * remove the type-3 route if any. A new type-3 route will be generated | |
2302 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2303 | */ | |
2304 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2305 | struct in_addr mcast_grp) | |
2306 | { | |
2307 | struct prefix_evpn p; | |
2308 | ||
2309 | vpn->mcast_grp = mcast_grp; | |
2310 | ||
2311 | if (is_vni_live(vpn)) { | |
2312 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2313 | delete_evpn_route(bgp, vpn, &p); | |
2314 | } | |
2315 | ||
2316 | return 0; | |
2317 | } | |
2318 | ||
128ea8ab | 2319 | /* |
d1911c26 | 2320 | * There is a tunnel endpoint IP address change for this VNI, delete |
2321 | * prior type-3 route (if needed) and update. | |
2322 | * Note: Route re-advertisement happens elsewhere after other processing | |
2323 | * other changes. | |
128ea8ab | 2324 | */ |
d62a17ae | 2325 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2326 | struct in_addr originator_ip) | |
128ea8ab | 2327 | { |
d62a17ae | 2328 | struct prefix_evpn p; |
128ea8ab | 2329 | |
ddd16ed5 MK |
2330 | /* If VNI is not live, we only need to update the originator ip */ |
2331 | if (!is_vni_live(vpn)) { | |
2332 | vpn->originator_ip = originator_ip; | |
2333 | return 0; | |
2334 | } | |
2335 | ||
db0e1937 MK |
2336 | /* Update the tunnel-ip hash */ |
2337 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2338 | bgp_tip_add(bgp, &originator_ip); | |
2339 | ||
2340 | /* filter routes as martian nexthop db has changed */ | |
2341 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2342 | ||
d62a17ae | 2343 | /* Need to withdraw type-3 route as the originator IP is part |
2344 | * of the key. | |
2345 | */ | |
2346 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2347 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2348 | |
d62a17ae | 2349 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2350 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2351 | return 0; |
185fb14a | 2352 | } |
50f74cf1 | 2353 | |
185fb14a AK |
2354 | static struct bgp_path_info * |
2355 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2356 | struct bgp_dest *dest, struct attr *attr) | |
2357 | { | |
2358 | struct attr *attr_new; | |
2359 | struct bgp_path_info *pi; | |
50f74cf1 | 2360 | |
185fb14a AK |
2361 | /* Add (or update) attribute to hash. */ |
2362 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2363 | |
185fb14a AK |
2364 | /* Create new route with its attribute. */ |
2365 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2366 | attr_new, dest); | |
2367 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2368 | bgp_path_info_extra_get(pi); | |
2369 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2370 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2371 | if (parent_pi->extra) { | |
2372 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2373 | sizeof(pi->extra->label)); | |
2374 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2375 | } |
185fb14a | 2376 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2377 | |
185fb14a | 2378 | return pi; |
50f74cf1 | 2379 | } |
2380 | ||
d3135ba3 | 2381 | /* |
2382 | * Install route entry into the VRF routing table and invoke route selection. | |
2383 | */ | |
2384 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2385 | const struct prefix_evpn *evp, |
40381db7 | 2386 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2387 | { |
9bcb3eef | 2388 | struct bgp_dest *dest; |
40381db7 | 2389 | struct bgp_path_info *pi; |
1ec31309 | 2390 | struct attr attr; |
d3135ba3 | 2391 | struct attr *attr_new; |
c4edf708 | 2392 | int ret = 0; |
d3135ba3 | 2393 | struct prefix p; |
2394 | struct prefix *pp = &p; | |
2395 | afi_t afi = 0; | |
2396 | safi_t safi = 0; | |
5f0c5ec8 | 2397 | bool new_pi = false; |
d3135ba3 | 2398 | |
2399 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2400 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2401 | |
2dbe669b | 2402 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2403 | zlog_debug( |
2dbe669b DA |
2404 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2405 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2406 | parent_pi->flags); | |
1eb88002 | 2407 | |
d3135ba3 | 2408 | /* Create (or fetch) route within the VRF. */ |
2409 | /* NOTE: There is no RD here. */ | |
3714a385 | 2410 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2411 | afi = AFI_IP; |
2412 | safi = SAFI_UNICAST; | |
9bcb3eef | 2413 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2414 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2415 | afi = AFI_IP6; |
2416 | safi = SAFI_UNICAST; | |
9bcb3eef | 2417 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2418 | } else |
2419 | return 0; | |
2420 | ||
1ec31309 | 2421 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2422 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2423 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2424 | * address for the rest of the code to flow through. In the case of IPv4, | |
2425 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2426 | */ |
6f4f49b2 | 2427 | attr = *parent_pi->attr; |
1ec31309 | 2428 | if (afi == AFI_IP6) |
2429 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2430 | else |
2431 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2432 | |
d3135ba3 | 2433 | /* Check if route entry is already present. */ |
9bcb3eef | 2434 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2435 | if (pi->extra |
2436 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2437 | break; |
2438 | ||
5f0c5ec8 | 2439 | if (!pi) { |
9bcb3eef | 2440 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2441 | new_pi = true; |
2442 | } else { | |
40381db7 DS |
2443 | if (attrhash_cmp(pi->attr, &attr) |
2444 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2445 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2446 | return 0; |
2447 | } | |
2448 | /* The attribute has changed. */ | |
2449 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2450 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2451 | |
2452 | /* Restore route, if needed. */ | |
40381db7 | 2453 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2454 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2455 | |
2456 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2457 | if ((afi == AFI_IP |
2458 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2459 | || (afi == AFI_IP6 | |
2460 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2461 | &attr_new->mp_nexthop_global))) | |
2462 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2463 | |
9bcb3eef | 2464 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2465 | /* Unintern existing, set to new. */ |
40381db7 DS |
2466 | bgp_attr_unintern(&pi->attr); |
2467 | pi->attr = attr_new; | |
2468 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2469 | } |
d846e917 | 2470 | /* as it is an importation, change nexthop */ |
9bcb3eef | 2471 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); |
d3135ba3 | 2472 | |
9bcb3eef | 2473 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2474 | safi); |
b49cdf4c | 2475 | |
d3135ba3 | 2476 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2477 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2478 | |
7452e879 | 2479 | /* Process for route leaking. */ |
2480 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2481 | ||
9bcb3eef | 2482 | bgp_dest_unlock_node(dest); |
3c11d70a | 2483 | |
5f0c5ec8 | 2484 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2485 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2486 | new_pi ? "new" : "update", dest, | |
2487 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2488 | pi->flags); | |
5f0c5ec8 | 2489 | |
d3135ba3 | 2490 | return ret; |
2491 | } | |
2492 | ||
128ea8ab | 2493 | /* |
2494 | * Install route entry into the VNI routing table and invoke route selection. | |
2495 | */ | |
d62a17ae | 2496 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2497 | const struct prefix_evpn *p, |
40381db7 | 2498 | struct bgp_path_info *parent_pi) |
d62a17ae | 2499 | { |
9bcb3eef | 2500 | struct bgp_dest *dest; |
40381db7 | 2501 | struct bgp_path_info *pi; |
9c7edc03 | 2502 | struct bgp_path_info *local_pi; |
d62a17ae | 2503 | struct attr *attr_new; |
2504 | int ret; | |
c44ab6f1 AK |
2505 | struct prefix_evpn ad_evp; |
2506 | ||
2507 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2508 | * we need to create a different copy for the VNI | |
2509 | */ | |
2510 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2511 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2512 | parent_pi->attr->nexthop); | |
d62a17ae | 2513 | |
2514 | /* Create (or fetch) route within the VNI. */ | |
2515 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2516 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2517 | |
2518 | /* Check if route entry is already present. */ | |
9bcb3eef | 2519 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2520 | if (pi->extra |
2521 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2522 | break; |
2523 | ||
bd0254af MS |
2524 | if (!pi) { |
2525 | /* Create an info */ | |
26c03e43 | 2526 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2527 | parent_pi->attr); |
bd0254af | 2528 | } else { |
40381db7 DS |
2529 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2530 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2531 | bgp_dest_unlock_node(dest); |
d62a17ae | 2532 | return 0; |
2533 | } | |
2534 | /* The attribute has changed. */ | |
2535 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2536 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2537 | |
50f74cf1 | 2538 | /* Restore route, if needed. */ |
40381db7 | 2539 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2540 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2541 | |
2542 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2543 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2544 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2545 | |
2546 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2547 | bgp_attr_unintern(&pi->attr); |
2548 | pi->attr = attr_new; | |
2549 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2550 | } |
2551 | ||
26c03e43 AK |
2552 | /* MAC-IP routes in the VNI table are linked to the destination ES */ |
2553 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
2554 | bgp_evpn_path_es_link(pi, vpn->vni, | |
2555 | bgp_evpn_attr_get_esi(pi->attr)); | |
2556 | ||
50f74cf1 | 2557 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2558 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2559 | |
9c7edc03 AK |
2560 | /* if the best path is a local path with a non-zero ES |
2561 | * sync info against the local path may need to be updated | |
2562 | * when a remote path is added/updated (including changes | |
2563 | * from sync-path to remote-path) | |
2564 | */ | |
2565 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2566 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2567 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2568 | __func__); | |
2569 | ||
9bcb3eef | 2570 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2571 | |
50f74cf1 | 2572 | return ret; |
2573 | } | |
2574 | ||
d3135ba3 | 2575 | /* |
2576 | * Uninstall route entry from the VRF routing table and send message | |
2577 | * to zebra, if appropriate. | |
2578 | */ | |
2579 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2580 | const struct prefix_evpn *evp, |
40381db7 | 2581 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2582 | { |
9bcb3eef | 2583 | struct bgp_dest *dest; |
40381db7 | 2584 | struct bgp_path_info *pi; |
c4edf708 | 2585 | int ret = 0; |
d3135ba3 | 2586 | struct prefix p; |
2587 | struct prefix *pp = &p; | |
2588 | afi_t afi = 0; | |
2589 | safi_t safi = 0; | |
2590 | ||
2591 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2592 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2593 | |
2dbe669b | 2594 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2595 | zlog_debug( |
2dbe669b DA |
2596 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2597 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2598 | parent_pi->flags); | |
1eb88002 | 2599 | |
d3135ba3 | 2600 | /* Locate route within the VRF. */ |
2601 | /* NOTE: There is no RD here. */ | |
3714a385 | 2602 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2603 | afi = AFI_IP; |
2604 | safi = SAFI_UNICAST; | |
9bcb3eef | 2605 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2606 | } else { |
2607 | afi = AFI_IP6; | |
2608 | safi = SAFI_UNICAST; | |
9bcb3eef | 2609 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2610 | } |
2611 | ||
9bcb3eef | 2612 | if (!dest) |
d3135ba3 | 2613 | return 0; |
2614 | ||
2615 | /* Find matching route entry. */ | |
9bcb3eef | 2616 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2617 | if (pi->extra |
2618 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2619 | break; |
2620 | ||
40381db7 | 2621 | if (!pi) |
d3135ba3 | 2622 | return 0; |
2623 | ||
5f0c5ec8 | 2624 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2625 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2626 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2627 | pi->flags); | |
5f0c5ec8 | 2628 | |
7452e879 | 2629 | /* Process for route leaking. */ |
2630 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2631 | ||
9bcb3eef | 2632 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2633 | safi); |
4c7a11d5 | 2634 | |
d3135ba3 | 2635 | /* Mark entry for deletion */ |
9bcb3eef | 2636 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2637 | |
2638 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2639 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2640 | |
2641 | /* Unlock route node. */ | |
9bcb3eef | 2642 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2643 | |
2644 | return ret; | |
2645 | } | |
2646 | ||
128ea8ab | 2647 | /* |
2648 | * Uninstall route entry from the VNI routing table and send message | |
2649 | * to zebra, if appropriate. | |
2650 | */ | |
d62a17ae | 2651 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2652 | const struct prefix_evpn *p, |
40381db7 | 2653 | struct bgp_path_info *parent_pi) |
128ea8ab | 2654 | { |
9bcb3eef | 2655 | struct bgp_dest *dest; |
40381db7 | 2656 | struct bgp_path_info *pi; |
9c7edc03 | 2657 | struct bgp_path_info *local_pi; |
d62a17ae | 2658 | int ret; |
c44ab6f1 AK |
2659 | struct prefix_evpn ad_evp; |
2660 | ||
2661 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2662 | * we need to create a different copy for the VNI | |
2663 | */ | |
2664 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2665 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2666 | parent_pi->attr->nexthop); | |
128ea8ab | 2667 | |
d62a17ae | 2668 | /* Locate route within the VNI. */ |
2669 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2670 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2671 | if (!dest) | |
d62a17ae | 2672 | return 0; |
128ea8ab | 2673 | |
d62a17ae | 2674 | /* Find matching route entry. */ |
9bcb3eef | 2675 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2676 | if (pi->extra |
2677 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2678 | break; |
128ea8ab | 2679 | |
40381db7 | 2680 | if (!pi) |
d62a17ae | 2681 | return 0; |
128ea8ab | 2682 | |
d62a17ae | 2683 | /* Mark entry for deletion */ |
9bcb3eef | 2684 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2685 | |
d62a17ae | 2686 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2687 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2688 | |
9c7edc03 AK |
2689 | /* if the best path is a local path with a non-zero ES |
2690 | * sync info against the local path may need to be updated | |
2691 | * when a remote path is deleted | |
2692 | */ | |
2693 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2694 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2695 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2696 | __func__); | |
2697 | ||
d62a17ae | 2698 | /* Unlock route node. */ |
9bcb3eef | 2699 | bgp_dest_unlock_node(dest); |
128ea8ab | 2700 | |
d62a17ae | 2701 | return ret; |
128ea8ab | 2702 | } |
2703 | ||
5ba238b7 MK |
2704 | /* |
2705 | * Given a route entry and a VRF, see if this route entry should be | |
2706 | * imported into the VRF i.e., RTs match. | |
2707 | */ | |
4b7e6066 | 2708 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2709 | struct bgp_path_info *pi) |
5ba238b7 | 2710 | { |
40381db7 | 2711 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2712 | struct ecommunity *ecom; |
2713 | int i; | |
2714 | ||
2715 | assert(attr); | |
2716 | /* Route should have valid RT to be even considered. */ | |
2717 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2718 | return 0; | |
2719 | ||
2720 | ecom = attr->ecommunity; | |
2721 | if (!ecom || !ecom->size) | |
2722 | return 0; | |
2723 | ||
2724 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2725 | * matches, we're done. | |
2726 | */ | |
2727 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2728 | uint8_t *pnt; |
2729 | uint8_t type, sub_type; | |
5ba238b7 MK |
2730 | struct ecommunity_val *eval; |
2731 | struct ecommunity_val eval_tmp; | |
2732 | struct vrf_irt_node *irt; | |
2733 | ||
2734 | /* Only deal with RTs */ | |
34540b0d | 2735 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2736 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2737 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2738 | type = *pnt++; |
2739 | sub_type = *pnt++; | |
2740 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2741 | continue; | |
2742 | ||
2743 | /* See if this RT matches specified VNIs import RTs */ | |
2744 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2745 | if (irt) |
5ba238b7 MK |
2746 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2747 | return 1; | |
2748 | ||
2749 | /* Also check for non-exact match. In this, we mask out the AS | |
2750 | * and | |
2751 | * only check on the local-admin sub-field. This is to | |
2752 | * facilitate using | |
2753 | * VNI as the RT for EBGP peering too. | |
2754 | */ | |
2755 | irt = NULL; | |
2756 | if (type == ECOMMUNITY_ENCODE_AS | |
2757 | || type == ECOMMUNITY_ENCODE_AS4 | |
2758 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2759 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2760 | mask_ecom_global_admin(&eval_tmp, eval); |
2761 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2762 | } | |
5d9cbca2 | 2763 | if (irt) |
5ba238b7 MK |
2764 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2765 | return 1; | |
2766 | } | |
2767 | ||
2768 | return 0; | |
2769 | } | |
2770 | ||
128ea8ab | 2771 | /* |
2772 | * Given a route entry and a VNI, see if this route entry should be | |
2773 | * imported into the VNI i.e., RTs match. | |
2774 | */ | |
d62a17ae | 2775 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2776 | struct bgp_path_info *pi) |
d62a17ae | 2777 | { |
40381db7 | 2778 | struct attr *attr = pi->attr; |
d62a17ae | 2779 | struct ecommunity *ecom; |
2780 | int i; | |
2781 | ||
2782 | assert(attr); | |
2783 | /* Route should have valid RT to be even considered. */ | |
2784 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2785 | return 0; | |
2786 | ||
2787 | ecom = attr->ecommunity; | |
2788 | if (!ecom || !ecom->size) | |
2789 | return 0; | |
2790 | ||
2791 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2792 | * matches, we're done. | |
2793 | */ | |
2794 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2795 | uint8_t *pnt; |
2796 | uint8_t type, sub_type; | |
d62a17ae | 2797 | struct ecommunity_val *eval; |
2798 | struct ecommunity_val eval_tmp; | |
2799 | struct irt_node *irt; | |
2800 | ||
2801 | /* Only deal with RTs */ | |
34540b0d | 2802 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2803 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2804 | + (i * ecom->unit_size)); |
d62a17ae | 2805 | type = *pnt++; |
2806 | sub_type = *pnt++; | |
2807 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2808 | continue; | |
2809 | ||
2810 | /* See if this RT matches specified VNIs import RTs */ | |
2811 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2812 | if (irt) |
d62a17ae | 2813 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2814 | return 1; | |
2815 | ||
2816 | /* Also check for non-exact match. In this, we mask out the AS | |
2817 | * and | |
2818 | * only check on the local-admin sub-field. This is to | |
2819 | * facilitate using | |
2820 | * VNI as the RT for EBGP peering too. | |
2821 | */ | |
2822 | irt = NULL; | |
2823 | if (type == ECOMMUNITY_ENCODE_AS | |
2824 | || type == ECOMMUNITY_ENCODE_AS4 | |
2825 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2826 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2827 | mask_ecom_global_admin(&eval_tmp, eval); |
2828 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2829 | } | |
b1ab0dfe | 2830 | if (irt) |
d62a17ae | 2831 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2832 | return 1; | |
2833 | } | |
2834 | ||
2835 | return 0; | |
128ea8ab | 2836 | } |
2837 | ||
47bf0432 CS |
2838 | /* This API will scan evpn routes for checking attribute's rmac |
2839 | * macthes with bgp instance router mac. It avoid installing | |
2840 | * route into bgp vrf table and remote rmac in bridge table. | |
2841 | */ | |
2842 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2843 | const struct prefix_evpn *evp, |
47bf0432 CS |
2844 | struct bgp_path_info *pi) |
2845 | { | |
2846 | /* evpn route could have learnt prior to L3vni has come up, | |
2847 | * perform rmac check before installing route and | |
2848 | * remote router mac. | |
2849 | * The route will be removed from global bgp table once | |
2850 | * SVI comes up with MAC and stored in hash, triggers | |
2851 | * bgp_mac_rescan_all_evpn_tables. | |
2852 | */ | |
05864da7 | 2853 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2854 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2855 | char attr_str[BUFSIZ] = {0}; |
2856 | ||
5022c833 | 2857 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2858 | |
2dbe669b DA |
2859 | zlog_debug( |
2860 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2861 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2862 | } |
2863 | ||
2864 | return 1; | |
2865 | } | |
2866 | ||
2867 | return 0; | |
2868 | } | |
2869 | ||
bbc57c6c AK |
2870 | /* don't import hosts that are locally attached */ |
2871 | static inline bool | |
2872 | bgp_evpn_skip_vrf_import_of_local_es(const struct prefix_evpn *evp, | |
2873 | struct bgp_path_info *pi, int install) | |
2874 | { | |
26c03e43 AK |
2875 | esi_t *esi; |
2876 | struct in_addr nh; | |
bbc57c6c | 2877 | |
26c03e43 AK |
2878 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2879 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2880 | ||
2881 | /* Don't import routes that point to a local destination */ | |
2882 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2883 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
2884 | char esi_buf[ESI_STR_LEN]; | |
2885 | ||
2886 | zlog_debug( | |
2887 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
2888 | install ? "import" : "unimport", evp, | |
2889 | esi_to_str(esi, esi_buf, | |
2890 | sizeof(esi_buf))); | |
2891 | } | |
2892 | return true; | |
2893 | } | |
2894 | ||
2895 | /* Don't import routes with ES as destination if the nexthop | |
2896 | * has not been advertised via the EAD-ES | |
2897 | */ | |
2898 | if (pi->attr) | |
2899 | nh = pi->attr->nexthop; | |
2900 | else | |
3a6290bd | 2901 | nh.s_addr = INADDR_ANY; |
8bcb09a1 | 2902 | if (install && !bgp_evpn_es_is_vtep_active(esi, nh)) { |
26c03e43 AK |
2903 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
2904 | char esi_buf[ESI_STR_LEN]; | |
2905 | ||
2906 | zlog_debug( | |
2907 | "vrf %s of evpn prefix %pFX skipped, nh %pI4 inactive in es %s", | |
2908 | install ? "import" : "unimport", evp, | |
2909 | &nh, | |
2910 | esi_to_str(esi, esi_buf, | |
2911 | sizeof(esi_buf))); | |
2912 | } | |
2913 | return true; | |
bbc57c6c | 2914 | } |
bbc57c6c AK |
2915 | } |
2916 | return false; | |
2917 | } | |
2918 | ||
5ba238b7 MK |
2919 | /* |
2920 | * Install or uninstall mac-ip routes are appropriate for this | |
2921 | * particular VRF. | |
2922 | */ | |
996c9314 | 2923 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2924 | { |
2925 | afi_t afi; | |
2926 | safi_t safi; | |
9bcb3eef | 2927 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 2928 | struct bgp_table *table; |
40381db7 | 2929 | struct bgp_path_info *pi; |
5ba238b7 | 2930 | int ret; |
5e53dce3 | 2931 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
2932 | |
2933 | afi = AFI_L2VPN; | |
2934 | safi = SAFI_EVPN; | |
5e53dce3 T |
2935 | bgp_evpn = bgp_get_evpn(); |
2936 | if (!bgp_evpn) | |
5ba238b7 MK |
2937 | return -1; |
2938 | ||
2939 | /* Walk entire global routing table and evaluate routes which could be | |
2940 | * imported into this VRF. Note that we need to loop through all global | |
2941 | * routes to determine which route matches the import rt on vrf | |
2942 | */ | |
9bcb3eef DS |
2943 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
2944 | rd_dest = bgp_route_next(rd_dest)) { | |
2945 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
2946 | if (!table) |
2947 | continue; | |
2948 | ||
9bcb3eef DS |
2949 | for (dest = bgp_table_top(table); dest; |
2950 | dest = bgp_route_next(dest)) { | |
2951 | const struct prefix_evpn *evp = | |
2952 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2953 | dest); | |
5ba238b7 | 2954 | |
1eb88002 | 2955 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2956 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2957 | || evp->prefix.route_type | |
2958 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2959 | continue; |
2960 | ||
1eb88002 | 2961 | /* if not a mac+ip route skip this route */ |
3714a385 | 2962 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2963 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2964 | continue; |
2965 | ||
9bcb3eef | 2966 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 2967 | pi = pi->next) { |
5ba238b7 | 2968 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2969 | * this VRF. |
2970 | */ | |
40381db7 DS |
2971 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2972 | && pi->type == ZEBRA_ROUTE_BGP | |
2973 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2974 | continue; |
2975 | ||
bbc57c6c AK |
2976 | /* don't import hosts that are locally attached |
2977 | */ | |
2978 | if (bgp_evpn_skip_vrf_import_of_local_es( | |
2979 | evp, pi, install)) | |
2980 | continue; | |
2981 | ||
40381db7 | 2982 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
2983 | if (bgp_evpn_route_rmac_self_check( |
2984 | bgp_vrf, evp, pi)) | |
2985 | continue; | |
2986 | ||
5ba238b7 | 2987 | if (install) |
996c9314 | 2988 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 2989 | bgp_vrf, evp, pi); |
5ba238b7 | 2990 | else |
996c9314 | 2991 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 2992 | bgp_vrf, evp, pi); |
5ba238b7 MK |
2993 | |
2994 | if (ret) { | |
af4c2728 | 2995 | flog_err( |
e50f7cfd | 2996 | EC_BGP_EVPN_FAIL, |
2dbe669b | 2997 | "Failed to %s EVPN %pFX route in VRF %s", |
5ba238b7 MK |
2998 | install ? "install" |
2999 | : "uninstall", | |
2dbe669b | 3000 | evp, |
996c9314 LB |
3001 | vrf_id_to_name( |
3002 | bgp_vrf->vrf_id)); | |
dc52bece DS |
3003 | bgp_dest_unlock_node(rd_dest); |
3004 | bgp_dest_unlock_node(dest); | |
5ba238b7 MK |
3005 | return ret; |
3006 | } | |
3007 | } | |
3008 | } | |
3009 | } | |
3010 | } | |
3011 | ||
3012 | return 0; | |
3013 | } | |
3014 | ||
128ea8ab | 3015 | /* |
3016 | * Install or uninstall routes of specified type that are appropriate for this | |
3017 | * particular VNI. | |
3018 | */ | |
d62a17ae | 3019 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3020 | struct bgpevpn *vpn, | |
3021 | bgp_evpn_route_type rtype, | |
3022 | int install) | |
3023 | { | |
0291c246 MK |
3024 | afi_t afi; |
3025 | safi_t safi; | |
9bcb3eef | 3026 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3027 | struct bgp_table *table; |
40381db7 | 3028 | struct bgp_path_info *pi; |
0291c246 | 3029 | int ret; |
d62a17ae | 3030 | |
3031 | afi = AFI_L2VPN; | |
3032 | safi = SAFI_EVPN; | |
3033 | ||
3034 | /* Walk entire global routing table and evaluate routes which could be | |
3035 | * imported into this VPN. Note that we cannot just look at the routes | |
3036 | * for | |
3037 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3038 | * RD. | |
3039 | */ | |
3040 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3041 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3042 | rd_dest = bgp_route_next(rd_dest)) { | |
3043 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3044 | if (!table) |
3045 | continue; | |
3046 | ||
9bcb3eef DS |
3047 | for (dest = bgp_table_top(table); dest; |
3048 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3049 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3050 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3051 | dest); | |
d62a17ae | 3052 | |
3053 | if (evp->prefix.route_type != rtype) | |
3054 | continue; | |
3055 | ||
9bcb3eef | 3056 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3057 | pi = pi->next) { |
d62a17ae | 3058 | /* Consider "valid" remote routes applicable for |
3059 | * this VNI. */ | |
40381db7 DS |
3060 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3061 | && pi->type == ZEBRA_ROUTE_BGP | |
3062 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3063 | continue; |
3064 | ||
40381db7 | 3065 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3066 | if (install) |
3067 | ret = install_evpn_route_entry( | |
40381db7 | 3068 | bgp, vpn, evp, pi); |
d62a17ae | 3069 | else |
3070 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3071 | bgp, vpn, evp, pi); |
d62a17ae | 3072 | |
3073 | if (ret) { | |
af4c2728 | 3074 | flog_err( |
e50f7cfd | 3075 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3076 | "%u: Failed to %s EVPN %s route in VNI %u", |
3077 | bgp->vrf_id, | |
3078 | install ? "install" | |
3079 | : "uninstall", | |
3080 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3081 | ? "MACIP" | |
3082 | : "IMET", | |
3083 | vpn->vni); | |
dc52bece DS |
3084 | |
3085 | bgp_dest_unlock_node(rd_dest); | |
3086 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3087 | return ret; |
3088 | } | |
3089 | } | |
3090 | } | |
3091 | } | |
3092 | } | |
3093 | ||
3094 | return 0; | |
128ea8ab | 3095 | } |
3096 | ||
5ba238b7 | 3097 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3098 | * is invoked upon l3vni-add or l3vni import rt change |
3099 | */ | |
5ba238b7 MK |
3100 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3101 | { | |
3102 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3103 | return 0; | |
3104 | } | |
3105 | ||
128ea8ab | 3106 | /* |
3107 | * Install any existing remote routes applicable for this VNI into its | |
3108 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3109 | * RT is changed. | |
3110 | */ | |
d62a17ae | 3111 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3112 | { |
d62a17ae | 3113 | int ret; |
128ea8ab | 3114 | |
d62a17ae | 3115 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3116 | * for this VNI. | |
3117 | */ | |
3118 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3119 | 1); | |
3120 | if (ret) | |
3121 | return ret; | |
128ea8ab | 3122 | |
c44ab6f1 AK |
3123 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3124 | 1); | |
3125 | if (ret) | |
3126 | return ret; | |
3127 | ||
d62a17ae | 3128 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3129 | 1); | |
128ea8ab | 3130 | } |
3131 | ||
5ba238b7 MK |
3132 | /* uninstall routes from l3vni vrf. */ |
3133 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3134 | { | |
3135 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3136 | return 0; | |
3137 | } | |
3138 | ||
90e60aa7 | 3139 | /* |
3140 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3141 | * this is invoked is upon an import RT change. | |
3142 | */ | |
d62a17ae | 3143 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3144 | { |
d62a17ae | 3145 | int ret; |
90e60aa7 | 3146 | |
d62a17ae | 3147 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3148 | * applicable | |
3149 | * for this VNI. | |
3150 | */ | |
3151 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3152 | 0); | |
3153 | if (ret) | |
3154 | return ret; | |
90e60aa7 | 3155 | |
c44ab6f1 AK |
3156 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3157 | 1); | |
3158 | if (ret) | |
3159 | return ret; | |
3160 | ||
3161 | ||
d62a17ae | 3162 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3163 | 0); | |
90e60aa7 | 3164 | } |
3165 | ||
d3135ba3 | 3166 | /* |
3167 | * Install or uninstall route in matching VRFs (list). | |
3168 | */ | |
3169 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3170 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3171 | struct bgp_path_info *pi, |
d3135ba3 | 3172 | struct list *vrfs, int install) |
3173 | { | |
d3135ba3 | 3174 | struct bgp *bgp_vrf; |
3175 | struct listnode *node, *nnode; | |
3176 | ||
90264d64 | 3177 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3178 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3179 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3180 | return 0; |
3181 | ||
90264d64 | 3182 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3183 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3184 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3185 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3186 | return 0; |
3187 | ||
bbc57c6c AK |
3188 | /* don't import hosts that are locally attached */ |
3189 | if (bgp_evpn_skip_vrf_import_of_local_es(evp, pi, install)) | |
3190 | return 0; | |
3191 | ||
d3135ba3 | 3192 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3193 | int ret; | |
3194 | ||
3195 | if (install) | |
40381db7 | 3196 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3197 | else |
996c9314 | 3198 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3199 | pi); |
d3135ba3 | 3200 | |
3201 | if (ret) { | |
e50f7cfd | 3202 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3203 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3204 | bgp_def->vrf_id, |
2dbe669b | 3205 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3206 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3207 | return ret; |
3208 | } | |
3209 | } | |
3210 | ||
3211 | return 0; | |
3212 | } | |
3213 | ||
128ea8ab | 3214 | /* |
3215 | * Install or uninstall route in matching VNIs (list). | |
3216 | */ | |
d62a17ae | 3217 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3218 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3219 | struct bgp_path_info *pi, |
d62a17ae | 3220 | struct list *vnis, int install) |
128ea8ab | 3221 | { |
d62a17ae | 3222 | struct bgpevpn *vpn; |
3223 | struct listnode *node, *nnode; | |
128ea8ab | 3224 | |
d62a17ae | 3225 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3226 | int ret; | |
128ea8ab | 3227 | |
d62a17ae | 3228 | if (!is_vni_live(vpn)) |
3229 | continue; | |
128ea8ab | 3230 | |
d62a17ae | 3231 | if (install) |
40381db7 | 3232 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3233 | else |
40381db7 | 3234 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3235 | |
d62a17ae | 3236 | if (ret) { |
1c50c1c0 QY |
3237 | flog_err(EC_BGP_EVPN_FAIL, |
3238 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3239 | bgp->vrf_id, install ? "install" : "uninstall", | |
3240 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3241 | ? "MACIP" | |
3242 | : "IMET", | |
3243 | vpn->vni); | |
d62a17ae | 3244 | return ret; |
3245 | } | |
3246 | } | |
128ea8ab | 3247 | |
d62a17ae | 3248 | return 0; |
128ea8ab | 3249 | } |
3250 | ||
3251 | /* | |
50f74cf1 | 3252 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3253 | */ |
26c03e43 AK |
3254 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3255 | safi_t safi, const struct prefix *p, | |
3256 | struct bgp_path_info *pi, | |
3257 | int import, bool in_vni_rt, | |
3258 | bool in_vrf_rt) | |
d62a17ae | 3259 | { |
3260 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3261 | struct attr *attr = pi->attr; |
d62a17ae | 3262 | struct ecommunity *ecom; |
3263 | int i; | |
c44ab6f1 | 3264 | struct prefix_evpn ad_evp; |
d62a17ae | 3265 | |
3266 | assert(attr); | |
3267 | ||
50f74cf1 | 3268 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3269 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3270 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3271 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3272 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3273 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3274 | return 0; |
3275 | ||
3276 | /* If we don't have Route Target, nothing much to do. */ | |
3277 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3278 | return 0; | |
3279 | ||
c44ab6f1 AK |
3280 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3281 | * we need to create a different copy for the VNI | |
3282 | */ | |
3283 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3284 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3285 | ||
d62a17ae | 3286 | ecom = attr->ecommunity; |
3287 | if (!ecom || !ecom->size) | |
3288 | return -1; | |
3289 | ||
50f74cf1 | 3290 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3291 | * attached to the route */ | |
d62a17ae | 3292 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3293 | uint8_t *pnt; |
3294 | uint8_t type, sub_type; | |
d62a17ae | 3295 | struct ecommunity_val *eval; |
3296 | struct ecommunity_val eval_tmp; | |
996c9314 | 3297 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3298 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3299 | struct bgp_evpn_es *es; |
d62a17ae | 3300 | |
3301 | /* Only deal with RTs */ | |
34540b0d | 3302 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3303 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3304 | + (i * ecom->unit_size)); |
d62a17ae | 3305 | type = *pnt++; |
3306 | sub_type = *pnt++; | |
3307 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3308 | continue; | |
3309 | ||
50f74cf1 | 3310 | /* |
3311 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3312 | * IMET route is imported into VNI table. | |
3313 | * prefix routes are imported into VRF table. | |
523cafc4 | 3314 | */ |
50f74cf1 | 3315 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3316 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3317 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3318 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3319 | |
26c03e43 | 3320 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3321 | if (irt) |
40381db7 DS |
3322 | install_uninstall_route_in_vnis( |
3323 | bgp, afi, safi, evp, pi, irt->vnis, | |
3324 | import); | |
50f74cf1 | 3325 | |
26c03e43 | 3326 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3327 | if (vrf_irt) |
40381db7 DS |
3328 | install_uninstall_route_in_vrfs( |
3329 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3330 | import); | |
50f74cf1 | 3331 | |
3332 | /* Also check for non-exact match. | |
3333 | * In this, we mask out the AS and | |
3334 | * only check on the local-admin sub-field. | |
3335 | * This is to facilitate using | |
3336 | * VNI as the RT for EBGP peering too. | |
3337 | */ | |
3338 | irt = NULL; | |
3339 | vrf_irt = NULL; | |
3340 | if (type == ECOMMUNITY_ENCODE_AS | |
3341 | || type == ECOMMUNITY_ENCODE_AS4 | |
3342 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3343 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3344 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3345 | if (in_vni_rt) |
3346 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3347 | if (in_vrf_rt) | |
3348 | vrf_irt = | |
3349 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3350 | } |
3351 | ||
3352 | if (irt) | |
40381db7 DS |
3353 | install_uninstall_route_in_vnis( |
3354 | bgp, afi, safi, evp, pi, irt->vnis, | |
3355 | import); | |
50f74cf1 | 3356 | if (vrf_irt) |
40381db7 DS |
3357 | install_uninstall_route_in_vrfs( |
3358 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3359 | import); | |
50f74cf1 | 3360 | } |
3361 | ||
3362 | /* es route is imported into the es table */ | |
3363 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3364 | ||
3365 | /* we will match based on the entire esi to avoid | |
3366 | * imoort of an es route for esi2 into esi1 | |
3367 | */ | |
c44ab6f1 | 3368 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3369 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3370 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3371 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3372 | } |
d62a17ae | 3373 | } |
3374 | ||
3375 | return 0; | |
128ea8ab | 3376 | } |
3377 | ||
26c03e43 AK |
3378 | /* |
3379 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3380 | */ | |
3381 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3382 | const struct prefix *p, | |
3383 | struct bgp_path_info *pi, int import) | |
3384 | { | |
3385 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3386 | true, true); | |
3387 | } | |
3388 | ||
3389 | /* Import the pi into vrf routing tables */ | |
3390 | void bgp_evpn_import_route_in_vrfs(struct bgp_path_info *pi, int import) | |
3391 | { | |
3392 | struct bgp *bgp_evpn; | |
3393 | ||
3394 | bgp_evpn = bgp_get_evpn(); | |
3395 | if (!bgp_evpn) | |
3396 | return; | |
3397 | ||
3398 | bgp_evpn_install_uninstall_table(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3399 | &pi->net->p, pi, import, false /*vpn*/, | |
3400 | true /*vrf*/); | |
3401 | } | |
3402 | ||
2bb9eff4 DS |
3403 | /* |
3404 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3405 | * routes | |
3406 | */ | |
80b140af MK |
3407 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3408 | { | |
5fd9c12b KA |
3409 | /* Delete ipv4 default route and withdraw from peers */ |
3410 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3411 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3412 | SAFI_UNICAST, false); | |
3413 | ||
80b140af | 3414 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3415 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3416 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3417 | |
5fd9c12b KA |
3418 | /* Delete ipv6 default route and withdraw from peers */ |
3419 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3420 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3421 | SAFI_UNICAST, false); | |
3422 | ||
80b140af | 3423 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3424 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3425 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3426 | } |
3427 | ||
2bb9eff4 DS |
3428 | /* |
3429 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3430 | * routes | |
3431 | */ | |
5394a276 | 3432 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3433 | { |
5394a276 CS |
3434 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3435 | ||
3436 | bgp_evpn = bgp_get_evpn(); | |
3437 | if (!bgp_evpn) | |
3438 | return; | |
3439 | ||
80b140af | 3440 | /* update all ipv4 routes */ |
fdf19f06 MK |
3441 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3442 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3443 | |
5fd9c12b KA |
3444 | /* update ipv4 default route and withdraw from peers */ |
3445 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3446 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3447 | SAFI_UNICAST, true); | |
3448 | ||
80b140af | 3449 | /* update all ipv6 routes */ |
fdf19f06 MK |
3450 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3451 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3452 | |
3453 | /* update ipv6 default route and withdraw from peers */ | |
3454 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3455 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3456 | SAFI_UNICAST, true); | |
3457 | ||
80b140af MK |
3458 | } |
3459 | ||
676f83b9 | 3460 | /* |
3461 | * update and advertise local routes for a VRF as type-5 routes. | |
3462 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3463 | * done in the global route table using the routes which already exist in the | |
3464 | * VRF routing table | |
3465 | */ | |
80b140af | 3466 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3467 | { |
80b140af MK |
3468 | /* skip if the RD is configured */ |
3469 | if (is_vrf_rd_configured(bgp_vrf)) | |
3470 | return; | |
3471 | ||
3472 | /* derive the RD for the VRF based on new router-id */ | |
3473 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3474 | ||
3475 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3476 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3477 | } |
3478 | ||
3479 | /* | |
3480 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3481 | * This is invoked upon VRF RD change. The processing is done only from global | |
3482 | * table. | |
3483 | */ | |
80b140af | 3484 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3485 | { |
80b140af MK |
3486 | /* skip if the RD is configured */ |
3487 | if (is_vrf_rd_configured(bgp_vrf)) | |
3488 | return; | |
3489 | ||
3490 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3491 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3492 | } |
3493 | ||
90e60aa7 | 3494 | /* |
3495 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3496 | * change. Note that the processing is done only on the global route table | |
3497 | * using routes that already exist in the per-VNI table. | |
3498 | */ | |
d62a17ae | 3499 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3500 | { | |
3501 | struct prefix_evpn p; | |
9bcb3eef | 3502 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3503 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3504 | struct attr *attr; |
3505 | afi_t afi = AFI_L2VPN; | |
3506 | safi_t safi = SAFI_EVPN; | |
3507 | ||
3508 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3509 | * attributes to create and advertise the type-3 route for this VNI | |
3510 | * in the global table. | |
fd069644 DS |
3511 | * |
3512 | * RT-3 only if doing head-end replication | |
d62a17ae | 3513 | */ |
833b8a50 AK |
3514 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3515 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3516 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3517 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3518 | if (!dest) /* unexpected */ | |
fd069644 | 3519 | return 0; |
9bcb3eef | 3520 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3521 | if (pi->peer == bgp->peer_self && |
3522 | pi->type == ZEBRA_ROUTE_BGP | |
3523 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3524 | break; | |
3525 | if (!pi) /* unexpected */ | |
3526 | return 0; | |
3527 | attr = pi->attr; | |
d62a17ae | 3528 | |
9c7edc03 AK |
3529 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3530 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3531 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3532 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3533 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3534 | |
fd069644 | 3535 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3536 | bgp_process(bgp, global_dest, afi, safi); |
3537 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3538 | } |
d62a17ae | 3539 | |
3540 | /* Now, walk this VNI's route table and use the route and its attribute | |
3541 | * to create and schedule route in global table. | |
3542 | */ | |
9bcb3eef DS |
3543 | for (dest = bgp_table_top(vpn->route_table); dest; |
3544 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3545 | const struct prefix_evpn *evp = |
9bcb3eef | 3546 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3547 | |
3548 | /* Identify MAC-IP local routes. */ | |
3549 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3550 | continue; | |
3551 | ||
9bcb3eef | 3552 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3553 | if (pi->peer == bgp->peer_self |
3554 | && pi->type == ZEBRA_ROUTE_BGP | |
3555 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3556 | break; |
40381db7 | 3557 | if (!pi) |
d62a17ae | 3558 | continue; |
3559 | ||
3560 | /* Create route in global routing table using this route entry's | |
3561 | * attribute. | |
3562 | */ | |
40381db7 | 3563 | attr = pi->attr; |
c44ab6f1 | 3564 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3565 | evp, &vpn->prd); |
9bcb3eef | 3566 | assert(global_dest); |
9c7edc03 AK |
3567 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, 1, |
3568 | &global_pi, 0, | |
3569 | mac_mobility_seqnum(attr), | |
3570 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3571 | |
3572 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3573 | bgp_process(bgp, global_dest, afi, safi); |
3574 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3575 | } |
3576 | ||
3577 | return 0; | |
90e60aa7 | 3578 | } |
3579 | ||
3580 | /* | |
3581 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3582 | * table. Invoked upon router-id change. | |
3583 | */ | |
d62a17ae | 3584 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3585 | { |
d62a17ae | 3586 | int ret; |
3587 | struct prefix_evpn p; | |
9bcb3eef | 3588 | struct bgp_dest *global_dest; |
40381db7 | 3589 | struct bgp_path_info *pi; |
d62a17ae | 3590 | afi_t afi = AFI_L2VPN; |
3591 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3592 | |
d62a17ae | 3593 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3594 | * for this VNI - from the global table. | |
3595 | */ | |
3596 | ret = delete_global_type2_routes(bgp, vpn); | |
3597 | if (ret) | |
3598 | return ret; | |
90e60aa7 | 3599 | |
d62a17ae | 3600 | /* Remove type-3 route for this VNI from global table. */ |
3601 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3602 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3603 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3604 | if (global_dest) { |
d62a17ae | 3605 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3606 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3607 | |
d62a17ae | 3608 | /* Schedule for processing - withdraws to peers happen from |
3609 | * this table. | |
3610 | */ | |
40381db7 | 3611 | if (pi) |
9bcb3eef DS |
3612 | bgp_process(bgp, global_dest, afi, safi); |
3613 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3614 | } |
90e60aa7 | 3615 | |
d62a17ae | 3616 | return 0; |
90e60aa7 | 3617 | } |
3618 | ||
2d48ee25 | 3619 | /* |
3620 | * Handle router-id change. Update and advertise local routes corresponding | |
3621 | * to this VNI from peers. Note that this is invoked after updating the | |
3622 | * router-id. The routes in the per-VNI table are used to create routes in | |
3623 | * the global table and schedule them. | |
3624 | */ | |
e3b78da8 | 3625 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3626 | { |
e3b78da8 | 3627 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3628 | |
d62a17ae | 3629 | /* Skip VNIs with configured RD. */ |
3630 | if (is_rd_configured(vpn)) | |
3631 | return; | |
2d48ee25 | 3632 | |
d62a17ae | 3633 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3634 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3635 | } |
3636 | ||
3637 | /* | |
3638 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3639 | * to this VNI from peers. Note that this is invoked prior to updating | |
3640 | * the router-id and is done only on the global route table, the routes | |
3641 | * are needed in the per-VNI table to re-advertise with new router id. | |
3642 | */ | |
e3b78da8 | 3643 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3644 | { |
e3b78da8 | 3645 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3646 | |
d62a17ae | 3647 | /* Skip VNIs with configured RD. */ |
3648 | if (is_rd_configured(vpn)) | |
3649 | return; | |
2d48ee25 | 3650 | |
d62a17ae | 3651 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3652 | } |
3653 | ||
fd069644 DS |
3654 | /* |
3655 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3656 | * This is invoked upon flooding mode changing to head-end replication. | |
3657 | */ | |
e3b78da8 | 3658 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3659 | { |
e3b78da8 | 3660 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3661 | struct bgp *bgp = data; |
3662 | struct prefix_evpn p; | |
3663 | ||
833b8a50 AK |
3664 | if (!vpn || !is_vni_live(vpn) || |
3665 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3666 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3667 | return; |
3668 | ||
3669 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3670 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3671 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3672 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3673 | } | |
3674 | ||
3675 | /* | |
3676 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3677 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3678 | */ | |
e3b78da8 | 3679 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3680 | { |
e3b78da8 | 3681 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3682 | struct bgp *bgp = data; |
3683 | struct prefix_evpn p; | |
3684 | ||
3685 | if (!vpn || !is_vni_live(vpn)) | |
3686 | return; | |
3687 | ||
3688 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3689 | delete_evpn_route(bgp, vpn, &p); | |
3690 | } | |
3691 | ||
128ea8ab | 3692 | /* |
3693 | * Process received EVPN type-2 route (advertise or withdraw). | |
3694 | */ | |
d62a17ae | 3695 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3696 | struct attr *attr, uint8_t *pfx, int psize, |
3697 | uint32_t addpath_id) | |
d62a17ae | 3698 | { |
3699 | struct prefix_rd prd; | |
e121d831 QY |
3700 | struct prefix_evpn p = {}; |
3701 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3702 | uint8_t ipaddr_len; |
3703 | uint8_t macaddr_len; | |
e121d831 QY |
3704 | /* holds the VNI(s) as in packet */ |
3705 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3706 | uint32_t num_labels = 0; |
554cd77a | 3707 | uint32_t eth_tag; |
d62a17ae | 3708 | int ret; |
3709 | ||
3710 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3711 | * additional 3 bytes if there is a second label (VNI): | |
3712 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3713 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3714 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3715 | */ | |
3716 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3717 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3718 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3719 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3720 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3721 | return -1; |
3722 | } | |
3723 | ||
e121d831 QY |
3724 | struct stream *pkt = stream_new(psize); |
3725 | stream_put(pkt, pfx, psize); | |
554cd77a | 3726 | |
d62a17ae | 3727 | /* Make prefix_rd */ |
3728 | prd.family = AF_UNSPEC; | |
3729 | prd.prefixlen = 64; | |
e121d831 QY |
3730 | |
3731 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3732 | |
3733 | /* Make EVPN prefix. */ | |
b03b8898 | 3734 | p.family = AF_EVPN; |
50f74cf1 | 3735 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3736 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3737 | ||
554cd77a | 3738 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3739 | if (attr) { |
e121d831 QY |
3740 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3741 | ||
9c7edc03 AK |
3742 | if (bgp_evpn_is_esi_local(&attr->esi)) |
3743 | attr->es_flags |= ATTR_ES_IS_LOCAL; | |
3744 | else | |
3745 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3746 | } else { |
3747 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3748 | } |
d62a17ae | 3749 | |
554cd77a | 3750 | /* Copy Ethernet Tag */ |
e121d831 | 3751 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3752 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3753 | |
3754 | /* Get the MAC Addr len */ | |
e121d831 | 3755 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3756 | |
3757 | /* Get the MAC Addr */ | |
28328ea9 | 3758 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3759 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3760 | } else { |
af4c2728 | 3761 | flog_err( |
e50f7cfd | 3762 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3763 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3764 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3765 | goto fail; |
d62a17ae | 3766 | } |
3767 | ||
3768 | ||
3769 | /* Get the IP. */ | |
e121d831 QY |
3770 | STREAM_GETC(pkt, ipaddr_len); |
3771 | ||
d62a17ae | 3772 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3773 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3774 | flog_err( |
e50f7cfd | 3775 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3776 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3777 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3778 | goto fail; |
d62a17ae | 3779 | } |
3780 | ||
3781 | if (ipaddr_len) { | |
3782 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3783 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3784 | ? IPADDR_V4 |
3785 | : IPADDR_V6; | |
e121d831 | 3786 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3787 | } |
d62a17ae | 3788 | |
b57ba6d2 | 3789 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3790 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3791 | num_labels++; |
e121d831 | 3792 | |
b57ba6d2 | 3793 | /* Do we have a second VNI? */ |
e121d831 | 3794 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3795 | num_labels++; |
e121d831 | 3796 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3797 | } |
d62a17ae | 3798 | |
3799 | /* Process the route. */ | |
3800 | if (attr) | |
3801 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3802 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3803 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3804 | else |
3805 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3806 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3807 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3808 | goto done; |
3809 | ||
3810 | fail: | |
3811 | stream_failure: | |
3812 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3813 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3814 | peer->bgp->vrf_id, peer->host); | |
3815 | ret = -1; | |
3816 | done: | |
3817 | stream_free(pkt); | |
d62a17ae | 3818 | return ret; |
128ea8ab | 3819 | } |
3820 | ||
3821 | /* | |
3822 | * Process received EVPN type-3 route (advertise or withdraw). | |
3823 | */ | |
d62a17ae | 3824 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3825 | struct attr *attr, uint8_t *pfx, int psize, |
3826 | uint32_t addpath_id) | |
d62a17ae | 3827 | { |
3828 | struct prefix_rd prd; | |
3829 | struct prefix_evpn p; | |
d7c0a89a | 3830 | uint8_t ipaddr_len; |
554cd77a | 3831 | uint32_t eth_tag; |
d62a17ae | 3832 | int ret; |
3833 | ||
3834 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3835 | * IP len (1) and IP (4 or 16). | |
3836 | */ | |
3837 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3838 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3839 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3840 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3841 | return -1; |
3842 | } | |
3843 | ||
7fd077aa | 3844 | /* If PMSI is present, log if it is anything other than IR. |
3845 | * Note: We just simply ignore the values as it is not clear if | |
3846 | * doing anything else is better. | |
3847 | */ | |
3848 | if (attr && | |
3849 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3850 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3851 | ||
3852 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3853 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3854 | flog_warn( | |
3855 | EC_BGP_EVPN_PMSI_PRESENT, | |
3856 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3857 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3858 | } |
3859 | } | |
3860 | ||
d62a17ae | 3861 | /* Make prefix_rd */ |
3862 | prd.family = AF_UNSPEC; | |
3863 | prd.prefixlen = 64; | |
3864 | memcpy(&prd.val, pfx, 8); | |
3865 | pfx += 8; | |
3866 | ||
3867 | /* Make EVPN prefix. */ | |
3868 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3869 | p.family = AF_EVPN; |
50f74cf1 | 3870 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3871 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3872 | ||
554cd77a VB |
3873 | /* Copy Ethernet Tag */ |
3874 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3875 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3876 | pfx += 4; |
3877 | ||
3878 | /* Get the IP. */ | |
3879 | ipaddr_len = *pfx++; | |
3880 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3881 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3882 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3883 | } else { |
af4c2728 | 3884 | flog_err( |
e50f7cfd | 3885 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3886 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3887 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3888 | return -1; | |
3889 | } | |
3890 | ||
3891 | /* Process the route. */ | |
3892 | if (attr) | |
3893 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3894 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3895 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3896 | else |
3897 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3898 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3899 | &prd, NULL, 0, NULL); |
d62a17ae | 3900 | return ret; |
128ea8ab | 3901 | } |
3902 | ||
3903 | /* | |
3904 | * Process received EVPN type-5 route (advertise or withdraw). | |
3905 | */ | |
d62a17ae | 3906 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 3907 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 3908 | uint32_t addpath_id) |
d62a17ae | 3909 | { |
3910 | struct prefix_rd prd; | |
3911 | struct prefix_evpn p; | |
3912 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3913 | uint8_t ippfx_len; |
3914 | uint32_t eth_tag; | |
b57ba6d2 | 3915 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3916 | int ret; |
c6ec0c74 KA |
3917 | afi_t gw_afi; |
3918 | bool is_valid_update = false; | |
d62a17ae | 3919 | |
3920 | /* Type-5 route should be 34 or 58 bytes: | |
3921 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3922 | * GW (4 or 16) and VNI (3). | |
3923 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3924 | */ | |
3925 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3926 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3927 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3928 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3929 | return -1; |
3930 | } | |
3931 | ||
3932 | /* Make prefix_rd */ | |
3933 | prd.family = AF_UNSPEC; | |
3934 | prd.prefixlen = 64; | |
3935 | memcpy(&prd.val, pfx, 8); | |
3936 | pfx += 8; | |
3937 | ||
3938 | /* Make EVPN prefix. */ | |
3939 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3940 | p.family = AF_EVPN; |
50f74cf1 | 3941 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3942 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3943 | ||
3944 | /* Additional information outside of prefix - ESI and GW IP */ | |
3945 | memset(&evpn, 0, sizeof(evpn)); | |
3946 | ||
3947 | /* Fetch ESI */ | |
c44ab6f1 AK |
3948 | if (attr) |
3949 | memcpy(&attr->esi, pfx, sizeof(esi_t)); | |
3950 | pfx += ESI_BYTES; | |
d62a17ae | 3951 | |
3952 | /* Fetch Ethernet Tag. */ | |
3953 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3954 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3955 | pfx += 4; |
3956 | ||
3957 | /* Fetch IP prefix length. */ | |
3958 | ippfx_len = *pfx++; | |
3959 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3960 | flog_err( |
e50f7cfd | 3961 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3962 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3963 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3964 | return -1; | |
3965 | } | |
3714a385 | 3966 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3967 | |
3968 | /* Determine IPv4 or IPv6 prefix */ | |
3969 | /* Since the address and GW are from the same family, this just becomes | |
3970 | * a simple check on the total size. | |
3971 | */ | |
3972 | if (psize == 34) { | |
3714a385 | 3973 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3974 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3975 | pfx += 4; |
3976 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3977 | pfx += 4; | |
c6ec0c74 | 3978 | gw_afi = AF_INET; |
d62a17ae | 3979 | } else { |
3714a385 | 3980 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3981 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3982 | pfx += 16; |
3983 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3984 | pfx += 16; | |
c6ec0c74 | 3985 | gw_afi = AF_INET6; |
d62a17ae | 3986 | } |
3987 | ||
b57ba6d2 MK |
3988 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3989 | memset(&label, 0, sizeof(label)); | |
3990 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3991 | |
3992 | /* | |
3993 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3994 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3995 | * field | |
6b11bd8d | 3996 | */ |
d62a17ae | 3997 | |
c6ec0c74 KA |
3998 | if (attr) { |
3999 | is_valid_update = true; | |
0a50c248 | 4000 | if (is_zero_mac(&attr->rmac) && |
c6ec0c74 KA |
4001 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) |
4002 | is_valid_update = false; | |
4003 | ||
4004 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4005 | is_valid_update = false; | |
4006 | } | |
4007 | ||
d62a17ae | 4008 | /* Process the route. */ |
c6ec0c74 | 4009 | if (is_valid_update) |
d62a17ae | 4010 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4011 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4012 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4013 | else |
4014 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4015 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4016 | &prd, &label, 1, &evpn); |
d62a17ae | 4017 | |
4018 | return ret; | |
4019 | } | |
4020 | ||
5f040085 DS |
4021 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4022 | const struct prefix_rd *prd, | |
4023 | mpls_label_t *label, uint32_t num_labels, | |
4024 | struct attr *attr) | |
d62a17ae | 4025 | { |
4026 | int len; | |
4027 | char temp[16]; | |
5f040085 | 4028 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4029 | |
4030 | memset(&temp, 0, 16); | |
b03b8898 | 4031 | if (p->family != AF_EVPN) |
d62a17ae | 4032 | return; |
4033 | p_evpn_p = &(p->u.prefix_evpn); | |
4034 | ||
e9fc2840 | 4035 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4036 | IP and GW-IP have to be both ipv4 or ipv6 |
4037 | */ | |
3714a385 | 4038 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4039 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4040 | else |
e9fc2840 | 4041 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4042 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4043 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4044 | stream_put(s, prd->val, 8); | |
0af35d90 | 4045 | if (attr) |
c44ab6f1 | 4046 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4047 | else |
c44ab6f1 | 4048 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4049 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4050 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4051 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4052 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4053 | else |
3714a385 | 4054 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4055 | if (attr) { |
6c924775 DS |
4056 | const struct bgp_route_evpn *evpn_overlay = |
4057 | bgp_attr_get_evpn_overlay(attr); | |
4058 | ||
3714a385 | 4059 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
6c924775 | 4060 | stream_put_ipv4(s, evpn_overlay->gw_ip.ipv4.s_addr); |
d62a17ae | 4061 | else |
6c924775 | 4062 | stream_put(s, &(evpn_overlay->gw_ip.ipv6), 16); |
d62a17ae | 4063 | } else { |
3714a385 | 4064 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4065 | stream_put_ipv4(s, 0); |
4066 | else | |
4067 | stream_put(s, &temp, 16); | |
4068 | } | |
4069 | ||
b57ba6d2 | 4070 | if (num_labels) |
d62a17ae | 4071 | stream_put(s, label, 3); |
4072 | else | |
4073 | stream_put3(s, 0); | |
128ea8ab | 4074 | } |
4075 | ||
4076 | /* | |
4077 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4078 | */ | |
e3b78da8 | 4079 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4080 | { |
e3b78da8 | 4081 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4082 | |
d62a17ae | 4083 | /* Remove EVPN routes and schedule for processing. */ |
4084 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4085 | |
d62a17ae | 4086 | /* Clear "live" flag and see if hash needs to be freed. */ |
4087 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4088 | if (!is_vni_configured(vpn)) | |
4089 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4090 | } |
4091 | ||
4092 | /* | |
4093 | * Free a VNI entry; iterator function called during cleanup. | |
4094 | */ | |
e3b78da8 | 4095 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4096 | { |
e3b78da8 | 4097 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4098 | |
d62a17ae | 4099 | delete_all_vni_routes(bgp, vpn); |
4100 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4101 | } |
4102 | ||
c581d8b0 MK |
4103 | /* |
4104 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4105 | */ | |
4106 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4107 | { | |
5e53dce3 | 4108 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4109 | |
c581d8b0 | 4110 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4111 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4112 | ||
4113 | /* Map RT to VRF */ | |
5e53dce3 T |
4114 | bgp_evpn = bgp_get_evpn(); |
4115 | if (!bgp_evpn) | |
10ebe1ab MK |
4116 | return; |
4117 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4118 | } |
4119 | ||
4120 | /* | |
4121 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4122 | */ | |
4123 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4124 | { | |
4125 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4126 | } | |
4127 | ||
4128 | /* | |
4129 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4130 | */ | |
4131 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4132 | { | |
4133 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4134 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4135 | } | |
4136 | ||
4137 | /* | |
4138 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4139 | */ | |
4140 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4141 | { | |
4142 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4143 | } | |
128ea8ab | 4144 | |
f1f8b53c MK |
4145 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4146 | { | |
5e53dce3 | 4147 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4148 | struct listnode *node = NULL; |
4149 | struct bgpevpn *vpn = NULL; | |
4150 | ||
5e53dce3 T |
4151 | bgp_evpn = bgp_get_evpn(); |
4152 | if (!bgp_evpn) | |
f1f8b53c MK |
4153 | return; |
4154 | ||
4992b4ae MK |
4155 | /* update all type-5 routes */ |
4156 | update_advertise_vrf_routes(bgp_vrf); | |
4157 | ||
4158 | /* update all type-2 routes */ | |
f1f8b53c | 4159 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4160 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4161 | } |
4162 | ||
bf1061d8 VB |
4163 | /* |
4164 | * Handle autort change for a given VNI. | |
4165 | */ | |
e3b78da8 | 4166 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4167 | { |
e3b78da8 | 4168 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4169 | |
bf1061d8 VB |
4170 | if (!is_import_rt_configured(vpn)) { |
4171 | if (is_vni_live(vpn)) | |
4172 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4173 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4174 | list_delete_all_node(vpn->import_rtl); |
4175 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4176 | if (is_vni_live(vpn)) | |
4177 | bgp_evpn_install_routes(bgp, vpn); | |
4178 | } | |
4179 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4180 | list_delete_all_node(vpn->export_rtl); |
4181 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4182 | if (is_vni_live(vpn)) | |
4183 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4184 | } | |
4185 | } | |
4186 | ||
128ea8ab | 4187 | /* |
4188 | * Public functions. | |
4189 | */ | |
4190 | ||
5424b7ba | 4191 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4192 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4193 | afi_t afi, safi_t safi) |
4194 | { | |
4195 | int ret = 0; | |
4196 | struct prefix_evpn evp; | |
5424b7ba | 4197 | |
31310b25 | 4198 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4199 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4200 | if (ret) |
af4c2728 | 4201 | flog_err( |
e50f7cfd | 4202 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4203 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4204 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4205 | } |
4206 | ||
342dd0c6 | 4207 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4208 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4209 | { |
4210 | struct bgp_table *table = NULL; | |
9bcb3eef | 4211 | struct bgp_dest *dest = NULL; |
40381db7 | 4212 | struct bgp_path_info *pi; |
342dd0c6 | 4213 | |
053905d2 | 4214 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4215 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4216 | /* Only care about "selected" routes. Also ensure that |
4217 | * these are routes that are injectable into EVPN. | |
4218 | */ | |
25f2ca53 | 4219 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4220 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4221 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4222 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4223 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4224 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4225 | safi); |
25f2ca53 | 4226 | break; |
4227 | } | |
4228 | } | |
4229 | } | |
5424b7ba | 4230 | } |
342dd0c6 | 4231 | |
5fd9c12b KA |
4232 | /* |
4233 | * evpn - enable advertisement of default g/w | |
4234 | */ | |
4235 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4236 | safi_t safi, bool add) | |
4237 | { | |
4238 | struct prefix ip_prefix; | |
4239 | ||
4240 | /* form the default prefix 0.0.0.0/0 */ | |
4241 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4242 | ip_prefix.family = afi2family(afi); | |
4243 | ||
4244 | if (add) { | |
4245 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4246 | NULL, afi, safi); | |
4247 | } else { | |
4248 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4249 | afi, safi); | |
4250 | } | |
4251 | } | |
4252 | ||
4253 | ||
2f69f6d3 | 4254 | /* |
4255 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4256 | * to this function correspond to those of the source IP prefix (best | |
4257 | * path in the case of the attr. In the case of a local prefix (when we | |
4258 | * are advertising local subnets), the src_attr will be NULL. | |
4259 | */ | |
bd494ec5 | 4260 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4261 | struct attr *src_attr, afi_t afi, |
4262 | safi_t safi) | |
5424b7ba MK |
4263 | { |
4264 | int ret = 0; | |
4265 | struct prefix_evpn evp; | |
7c82b312 | 4266 | |
31310b25 | 4267 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4268 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4269 | if (ret) | |
e50f7cfd | 4270 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4271 | "%u: Failed to create type-5 route for prefix %pFX", |
4272 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4273 | } |
4274 | ||
2f69f6d3 | 4275 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4276 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4277 | * advertisement is enabled. | |
4278 | */ | |
996c9314 LB |
4279 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4280 | safi_t safi) | |
342dd0c6 | 4281 | { |
4282 | struct bgp_table *table = NULL; | |
9bcb3eef | 4283 | struct bgp_dest *dest = NULL; |
40381db7 | 4284 | struct bgp_path_info *pi; |
342dd0c6 | 4285 | |
053905d2 | 4286 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4287 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4288 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4289 | * attribute. Also, ensure that the route is injectable |
4290 | * into EVPN. | |
2f69f6d3 | 4291 | * TODO: Support for AddPath for EVPN. |
4292 | */ | |
9bcb3eef | 4293 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4294 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4295 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4296 | |
4297 | /* apply the route-map */ | |
4298 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4299 | route_map_result_t ret; |
e34291b8 | 4300 | struct bgp_path_info tmp_pi; |
4301 | struct bgp_path_info_extra tmp_pie; | |
4302 | struct attr tmp_attr; | |
4303 | ||
4304 | tmp_attr = *pi->attr; | |
4305 | ||
4306 | /* Fill temp path_info */ | |
9bcb3eef DS |
4307 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4308 | dest, pi, pi->peer, | |
4309 | &tmp_attr); | |
e34291b8 | 4310 | |
4311 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4312 | |
996c9314 LB |
4313 | ret = route_map_apply( |
4314 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4315 | .map, | |
9bcb3eef | 4316 | bgp_dest_get_prefix(dest), |
1782514f | 4317 | &tmp_pi); |
e34291b8 | 4318 | if (ret == RMAP_DENYMATCH) { |
4319 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4320 | continue; |
e34291b8 | 4321 | } |
4322 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4323 | bgp_vrf, |
9bcb3eef | 4324 | bgp_dest_get_prefix(dest), |
b54892e0 | 4325 | &tmp_attr, afi, safi); |
e34291b8 | 4326 | } else |
4327 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4328 | bgp_vrf, |
9bcb3eef | 4329 | bgp_dest_get_prefix(dest), |
b54892e0 | 4330 | pi->attr, afi, safi); |
2f69f6d3 | 4331 | break; |
4332 | } | |
4333 | } | |
31310b25 | 4334 | } |
342dd0c6 | 4335 | } |
4336 | ||
996c9314 | 4337 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4338 | { |
4339 | struct listnode *node, *nnode, *node_to_del; | |
4340 | struct ecommunity *ecom, *ecom_auto; | |
4341 | struct ecommunity_val eval; | |
4342 | ||
bf1061d8 VB |
4343 | if (bgp->advertise_autort_rfc8365) |
4344 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4345 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4346 | ||
4347 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4348 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4349 | node_to_del = NULL; |
4350 | ||
4351 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4352 | if (ecommunity_match(ecom, ecom_auto)) { | |
4353 | ecommunity_free(&ecom); | |
4354 | node_to_del = node; | |
4355 | } | |
4356 | } | |
4357 | ||
4358 | if (node_to_del) | |
4359 | list_delete_node(rtl, node_to_del); | |
4360 | ||
4361 | ecommunity_free(&ecom_auto); | |
4362 | } | |
4363 | ||
4364 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4365 | struct ecommunity *ecomadd) |
c581d8b0 | 4366 | { |
5ba238b7 | 4367 | /* uninstall routes from vrf */ |
3d0b43d7 | 4368 | if (is_l3vni_live(bgp_vrf)) |
4369 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4370 | |
4371 | /* Cleanup the RT to VRF mapping */ | |
4372 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4373 | ||
c581d8b0 MK |
4374 | /* Remove auto generated RT */ |
4375 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4376 | ||
4377 | /* Add the newly configured RT to RT list */ | |
4378 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4379 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4380 | ||
3d0b43d7 | 4381 | /* map VRF to its RTs and install routes matching the new RTs */ |
4382 | if (is_l3vni_live(bgp_vrf)) { | |
4383 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4384 | install_routes_for_vrf(bgp_vrf); | |
4385 | } | |
c581d8b0 MK |
4386 | } |
4387 | ||
4388 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4389 | struct ecommunity *ecomdel) | |
4390 | { | |
4391 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4392 | struct ecommunity *ecom = NULL; | |
4393 | ||
5ba238b7 | 4394 | /* uninstall routes from vrf */ |
3d0b43d7 | 4395 | if (is_l3vni_live(bgp_vrf)) |
4396 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4397 | |
4398 | /* Cleanup the RT to VRF mapping */ | |
4399 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4400 | ||
c581d8b0 MK |
4401 | /* remove the RT from the RT list */ |
4402 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4403 | if (ecommunity_match(ecom, ecomdel)) { | |
4404 | ecommunity_free(&ecom); | |
4405 | node_to_del = node; | |
4406 | break; | |
4407 | } | |
4408 | } | |
4409 | ||
4410 | if (node_to_del) | |
4411 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4412 | ||
b3a4db3d | 4413 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4414 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4415 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4416 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4417 | if (is_l3vni_live(bgp_vrf)) |
4418 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4419 | } |
4420 | ||
3d0b43d7 | 4421 | /* map VRFs to its RTs and install routes matching this new RT */ |
4422 | if (is_l3vni_live(bgp_vrf)) { | |
4423 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4424 | install_routes_for_vrf(bgp_vrf); | |
4425 | } | |
c581d8b0 MK |
4426 | } |
4427 | ||
4428 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4429 | struct ecommunity *ecomadd) | |
4430 | { | |
4431 | /* remove auto-generated RT */ | |
4432 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4433 | ||
4434 | /* Add the new RT to the RT list */ | |
4435 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4436 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4437 | ||
ebdc9e64 AD |
4438 | if (is_l3vni_live(bgp_vrf)) |
4439 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4440 | } |
4441 | ||
4442 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4443 | struct ecommunity *ecomdel) | |
4444 | { | |
4445 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4446 | struct ecommunity *ecom = NULL; | |
4447 | ||
4448 | /* Remove the RT from the RT list */ | |
4449 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4450 | if (ecommunity_match(ecom, ecomdel)) { | |
4451 | ecommunity_free(&ecom); | |
4452 | node_to_del = node; | |
4453 | break; | |
4454 | } | |
4455 | } | |
4456 | ||
4457 | if (node_to_del) | |
4458 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4459 | ||
1525e99f DS |
4460 | /* |
4461 | * Temporary assert to make SA happy. | |
4462 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4463 | * which means that SA is going to complain about | |
4464 | * the list_isempty call, which doesn't NULL check. | |
4465 | * So until we get this situation cleaned up, here | |
4466 | * we are. | |
4467 | */ | |
4468 | assert(bgp_vrf->vrf_export_rtl); | |
4469 | ||
c581d8b0 | 4470 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4471 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4472 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4473 | if (is_l3vni_live(bgp_vrf)) |
4474 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4475 | } |
4476 | ||
ebdc9e64 AD |
4477 | if (is_l3vni_live(bgp_vrf)) |
4478 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4479 | } |
4480 | ||
2d48ee25 | 4481 | /* |
4482 | * Handle change to BGP router id. This is invoked twice by the change | |
4483 | * handler, first before the router id has been changed and then after | |
4484 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4485 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4486 | * will result in the routes being re-advertised. |
4487 | */ | |
d62a17ae | 4488 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4489 | { |
5394a276 CS |
4490 | struct listnode *node; |
4491 | struct bgp *bgp_vrf; | |
4492 | ||
676f83b9 | 4493 | if (withdraw) { |
4494 | ||
4495 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4496 | stored in the global table for this vrf |
4497 | */ | |
80b140af | 4498 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4499 | |
4500 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4501 | * L2-VNIs |
4502 | */ | |
d62a17ae | 4503 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4504 | (void (*)(struct hash_bucket *, |
d62a17ae | 4505 | void *))withdraw_router_id_vni, |
4506 | bgp); | |
5394a276 CS |
4507 | |
4508 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4509 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4510 | if (bgp_vrf->evpn_info->advertise_pip && | |
4511 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4512 | == INADDR_ANY)) | |
4513 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4514 | = INADDR_ANY; | |
4515 | } | |
4516 | } | |
676f83b9 | 4517 | } else { |
4518 | ||
5394a276 CS |
4519 | /* Assign new default instance router-id */ |
4520 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4521 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4522 | if (bgp_vrf->evpn_info->advertise_pip && | |
4523 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4524 | == INADDR_ANY)) { | |
4525 | bgp_vrf->evpn_info->pip_ip = | |
4526 | bgp->router_id; | |
4527 | /* advertise type-5 routes with | |
4528 | * new nexthop | |
4529 | */ | |
4530 | update_advertise_vrf_routes(bgp_vrf); | |
4531 | } | |
4532 | } | |
4533 | } | |
4534 | ||
676f83b9 | 4535 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4536 | * RD |
4537 | */ | |
80b140af | 4538 | update_router_id_vrf(bgp); |
676f83b9 | 4539 | |
4540 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4541 | * new RD |
4542 | */ | |
d62a17ae | 4543 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4544 | (void (*)(struct hash_bucket *, |
d62a17ae | 4545 | void *))update_router_id_vni, |
4546 | bgp); | |
676f83b9 | 4547 | } |
2d48ee25 | 4548 | } |
4549 | ||
bf1061d8 VB |
4550 | /* |
4551 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4552 | */ | |
4553 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4554 | { | |
4555 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4556 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4557 | void*))update_autort_vni, |
4558 | bgp); | |
4559 | } | |
4560 | ||
90e60aa7 | 4561 | /* |
4562 | * Handle change to export RT - update and advertise local routes. | |
4563 | */ | |
d62a17ae | 4564 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4565 | { |
d62a17ae | 4566 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4567 | } |
4568 | ||
996c9314 | 4569 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4570 | { |
4571 | if (withdraw) | |
4572 | delete_withdraw_vrf_routes(bgp_vrf); | |
4573 | else | |
4574 | update_advertise_vrf_routes(bgp_vrf); | |
4575 | } | |
4576 | ||
90e60aa7 | 4577 | /* |
4578 | * Handle change to RD. This is invoked twice by the change handler, | |
4579 | * first before the RD has been changed and then after the RD has | |
4580 | * been changed. The first invocation will result in local routes | |
4581 | * of this VNI being deleted and withdrawn and the next will result | |
4582 | * in the routes being re-advertised. | |
4583 | */ | |
d62a17ae | 4584 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4585 | int withdraw) | |
90e60aa7 | 4586 | { |
d62a17ae | 4587 | if (withdraw) |
4588 | delete_withdraw_vni_routes(bgp, vpn); | |
4589 | else | |
4590 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4591 | } |
4592 | ||
4593 | /* | |
4594 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4595 | */ | |
d62a17ae | 4596 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4597 | { |
d62a17ae | 4598 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4599 | } |
4600 | ||
4601 | /* | |
4602 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4603 | * to Import RT. | |
4604 | */ | |
d62a17ae | 4605 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4606 | { |
d62a17ae | 4607 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4608 | } |
4609 | ||
b16031a2 | 4610 | /* |
b57ba6d2 | 4611 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4612 | */ |
d7c0a89a | 4613 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4614 | int len) |
b16031a2 | 4615 | { |
b57ba6d2 | 4616 | vni_t vni1, vni2; |
b16031a2 | 4617 | |
b57ba6d2 MK |
4618 | vni1 = label2vni(label); |
4619 | if (num_labels == 2) { | |
996c9314 | 4620 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4621 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4622 | } else | |
4623 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4624 | return buf; |
b16031a2 | 4625 | } |
4626 | ||
9c92b5f7 MK |
4627 | /* |
4628 | * Function to convert evpn route to json format. | |
4629 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4630 | */ | |
bd494ec5 | 4631 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4632 | { |
b682f6de | 4633 | char buf1[ETHER_ADDR_STRLEN]; |
4634 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4635 | uint8_t family; |
4636 | uint8_t prefixlen; | |
9c92b5f7 | 4637 | |
b682f6de | 4638 | if (!json) |
4639 | return; | |
9c92b5f7 | 4640 | |
44c69747 LK |
4641 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4642 | ||
4643 | switch (p->prefix.route_type) { | |
4644 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4645 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4646 | p->prefix.macip_addr.eth_tag); |
4647 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4648 | json_object_string_add(json, "mac", | |
4649 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4650 | sizeof(buf1))); | |
4651 | ||
4652 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4653 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4654 | AF_INET6; | |
4655 | prefixlen = (family == AF_INET) ? | |
4656 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4657 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4658 | buf2, PREFIX2STR_BUFFER); | |
4659 | json_object_int_add(json, "ipLen", prefixlen); | |
4660 | json_object_string_add(json, "ip", buf2); | |
4661 | } | |
4662 | break; | |
dff8f48d | 4663 | |
44c69747 LK |
4664 | case BGP_EVPN_IMET_ROUTE: |
4665 | json_object_int_add(json, "ethTag", | |
4666 | p->prefix.imet_addr.eth_tag); | |
4667 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4668 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4669 | IPV6_MAX_BITLEN; | |
4670 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4671 | PREFIX2STR_BUFFER); | |
4672 | json_object_int_add(json, "ipLen", prefixlen); | |
4673 | json_object_string_add(json, "ip", buf2); | |
4674 | break; | |
dff8f48d | 4675 | |
44c69747 LK |
4676 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4677 | json_object_int_add(json, "ethTag", | |
4678 | p->prefix.prefix_addr.eth_tag); | |
4679 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4680 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4681 | buf2, sizeof(buf2)); | |
4682 | json_object_int_add(json, "ipLen", | |
4683 | p->prefix.prefix_addr.ip_prefix_length); | |
4684 | json_object_string_add(json, "ip", buf2); | |
4685 | break; | |
4686 | ||
4687 | default: | |
4688 | break; | |
dff8f48d | 4689 | } |
9c92b5f7 MK |
4690 | } |
4691 | ||
128ea8ab | 4692 | /* |
4693 | * Encode EVPN prefix in Update (MP_REACH) | |
4694 | */ | |
5f040085 DS |
4695 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4696 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4697 | uint32_t num_labels, struct attr *attr, |
4698 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4699 | { |
4700 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4701 | int len, ipa_len = 0; |
d62a17ae | 4702 | |
4703 | if (addpath_encode) | |
4704 | stream_putl(s, addpath_tx_id); | |
4705 | ||
4706 | /* Route type */ | |
4707 | stream_putc(s, evp->prefix.route_type); | |
4708 | ||
4709 | switch (evp->prefix.route_type) { | |
4710 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4711 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4712 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4713 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4714 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4715 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4716 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4717 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4718 | len += 3; | |
4719 | stream_putc(s, len); | |
996c9314 | 4720 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4721 | if (attr) |
c44ab6f1 | 4722 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4723 | else |
4724 | stream_put(s, 0, 10); | |
3714a385 | 4725 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4726 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4727 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4728 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4729 | if (ipa_len) /* IP */ | |
4730 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4731 | ipa_len); | |
b57ba6d2 MK |
4732 | /* 1st label is the L2 VNI */ |
4733 | stream_put(s, label, BGP_LABEL_BYTES); | |
4734 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4735 | if (ipa_len && num_labels > 1) | |
996c9314 | 4736 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4737 | break; |
4738 | ||
4739 | case BGP_EVPN_IMET_ROUTE: | |
4740 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4741 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4742 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4743 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4744 | /* Originating Router's IP Addr */ | |
3714a385 | 4745 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4746 | break; |
4747 | ||
50f74cf1 | 4748 | case BGP_EVPN_ES_ROUTE: |
4749 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4750 | stream_put(s, prd->val, 8); /* RD */ | |
4751 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4752 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4753 | /* VTEP IP */ |
4754 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4755 | break; |
4756 | ||
c44ab6f1 AK |
4757 | case BGP_EVPN_AD_ROUTE: |
4758 | /* RD, ESI, EthTag, 1 VNI */ | |
4759 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4760 | stream_putc(s, len); | |
4761 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4762 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4763 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4764 | stream_put(s, label, BGP_LABEL_BYTES); | |
4765 | break; | |
4766 | ||
d62a17ae | 4767 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4768 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4769 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4770 | break; |
4771 | ||
4772 | default: | |
4773 | break; | |
4774 | } | |
4775 | } | |
4776 | ||
4777 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4778 | struct bgp_nlri *packet, int withdraw) | |
4779 | { | |
d7c0a89a QY |
4780 | uint8_t *pnt; |
4781 | uint8_t *lim; | |
d62a17ae | 4782 | afi_t afi; |
4783 | safi_t safi; | |
d7c0a89a | 4784 | uint32_t addpath_id; |
d62a17ae | 4785 | int addpath_encoded; |
4786 | int psize = 0; | |
d7c0a89a | 4787 | uint8_t rtype; |
d62a17ae | 4788 | struct prefix p; |
4789 | ||
d62a17ae | 4790 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4791 | pnt = packet->nlri; | |
4792 | lim = pnt + packet->length; | |
4793 | afi = packet->afi; | |
4794 | safi = packet->safi; | |
4795 | addpath_id = 0; | |
4796 | ||
4797 | addpath_encoded = | |
4798 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4799 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4800 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4801 | ||
4802 | for (; pnt < lim; pnt += psize) { | |
4803 | /* Clear prefix structure. */ | |
4804 | memset(&p, 0, sizeof(struct prefix)); | |
4805 | ||
4806 | /* Deal with path-id if AddPath is supported. */ | |
4807 | if (addpath_encoded) { | |
4808 | /* When packet overflow occurs return immediately. */ | |
4809 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4810 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4811 | |
a3a850a1 S |
4812 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4813 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4814 | pnt += BGP_ADDPATH_ID_LEN; |
4815 | } | |
4816 | ||
4817 | /* All EVPN NLRI types start with type and length. */ | |
4818 | if (pnt + 2 > lim) | |
513386b5 | 4819 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4820 | |
4821 | rtype = *pnt++; | |
3f54c705 | 4822 | psize = *pnt++; |
d62a17ae | 4823 | |
4824 | /* When packet overflow occur return immediately. */ | |
4825 | if (pnt + psize > lim) | |
513386b5 | 4826 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4827 | |
4828 | switch (rtype) { | |
4829 | case BGP_EVPN_MAC_IP_ROUTE: | |
4830 | if (process_type2_route(peer, afi, safi, | |
4831 | withdraw ? NULL : attr, pnt, | |
4832 | psize, addpath_id)) { | |
af4c2728 | 4833 | flog_err( |
e50f7cfd | 4834 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4835 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4836 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4837 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4838 | } |
4839 | break; | |
4840 | ||
4841 | case BGP_EVPN_IMET_ROUTE: | |
4842 | if (process_type3_route(peer, afi, safi, | |
4843 | withdraw ? NULL : attr, pnt, | |
4844 | psize, addpath_id)) { | |
af4c2728 | 4845 | flog_err( |
e50f7cfd | 4846 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4847 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4848 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4849 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4850 | } |
4851 | break; | |
4852 | ||
50f74cf1 | 4853 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 4854 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 4855 | withdraw ? NULL : attr, pnt, |
4856 | psize, addpath_id)) { | |
af4c2728 | 4857 | flog_err( |
e50f7cfd | 4858 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4859 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4860 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4861 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4862 | } |
4863 | break; | |
4864 | ||
c44ab6f1 AK |
4865 | case BGP_EVPN_AD_ROUTE: |
4866 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
4867 | withdraw ? NULL : attr, pnt, | |
4868 | psize, addpath_id)) { | |
4869 | flog_err( | |
4870 | EC_BGP_PKT_PROCESS, | |
4871 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
4872 | peer->bgp->vrf_id, peer->host, psize); | |
4873 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
4874 | } | |
4875 | break; | |
4876 | ||
d62a17ae | 4877 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4878 | if (process_type5_route(peer, afi, safi, |
4879 | withdraw ? NULL : attr, pnt, | |
4880 | psize, addpath_id)) { | |
af4c2728 | 4881 | flog_err( |
e50f7cfd | 4882 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4883 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4884 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4885 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4886 | } |
4887 | break; | |
4888 | ||
4889 | default: | |
4890 | break; | |
4891 | } | |
4892 | } | |
4893 | ||
4894 | /* Packet length consistency check. */ | |
4895 | if (pnt != lim) | |
513386b5 | 4896 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 4897 | |
513386b5 | 4898 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 4899 | } |
4900 | ||
10ebe1ab MK |
4901 | /* |
4902 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4903 | * The mapping will be used during route processing. | |
4904 | * bgp_def: default bgp instance | |
4905 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4906 | */ | |
4907 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4908 | { | |
4909 | int i = 0; | |
4910 | struct ecommunity_val *eval = NULL; | |
4911 | struct listnode *node = NULL, *nnode = NULL; | |
4912 | struct ecommunity *ecom = NULL; | |
4913 | ||
4914 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4915 | for (i = 0; i < ecom->size; i++) { | |
4916 | eval = (struct ecommunity_val *)(ecom->val | |
4917 | + (i | |
4918 | * ECOMMUNITY_SIZE)); | |
4919 | map_vrf_to_rt(bgp_vrf, eval); | |
4920 | } | |
4921 | } | |
4922 | } | |
4923 | ||
4924 | /* | |
4925 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4926 | */ | |
4927 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4928 | { | |
4929 | int i; | |
4930 | struct ecommunity_val *eval; | |
4931 | struct listnode *node, *nnode; | |
4932 | struct ecommunity *ecom; | |
4933 | ||
4934 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4935 | for (i = 0; i < ecom->size; i++) { | |
4936 | struct vrf_irt_node *irt; | |
4937 | struct ecommunity_val eval_tmp; | |
4938 | ||
4939 | eval = (struct ecommunity_val *)(ecom->val | |
4940 | + (i | |
4941 | * ECOMMUNITY_SIZE)); | |
4942 | /* If using "automatic" RT, we only care about the | |
4943 | * local-admin sub-field. | |
4944 | * This is to facilitate using VNI as the RT for EBGP | |
4945 | * peering too. | |
4946 | */ | |
4947 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4948 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4949 | BGP_VRF_IMPORT_RT_CFGD)) | |
4950 | mask_ecom_global_admin(&eval_tmp, eval); | |
4951 | ||
4952 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4953 | if (irt) | |
4954 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4955 | } | |
4956 | } | |
4957 | } | |
4958 | ||
4959 | ||
128ea8ab | 4960 | /* |
4961 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4962 | * The mapping will be used during route processing. | |
4963 | */ | |
d62a17ae | 4964 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4965 | { |
d62a17ae | 4966 | int i; |
4967 | struct ecommunity_val *eval; | |
4968 | struct listnode *node, *nnode; | |
4969 | struct ecommunity *ecom; | |
128ea8ab | 4970 | |
d62a17ae | 4971 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4972 | for (i = 0; i < ecom->size; i++) { | |
4973 | eval = (struct ecommunity_val *)(ecom->val | |
4974 | + (i | |
4975 | * ECOMMUNITY_SIZE)); | |
4976 | map_vni_to_rt(bgp, vpn, eval); | |
4977 | } | |
4978 | } | |
128ea8ab | 4979 | } |
4980 | ||
4981 | /* | |
4982 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4983 | */ | |
d62a17ae | 4984 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4985 | { |
d62a17ae | 4986 | int i; |
4987 | struct ecommunity_val *eval; | |
4988 | struct listnode *node, *nnode; | |
4989 | struct ecommunity *ecom; | |
128ea8ab | 4990 | |
d62a17ae | 4991 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4992 | for (i = 0; i < ecom->size; i++) { | |
4993 | struct irt_node *irt; | |
4994 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4995 | |
d62a17ae | 4996 | eval = (struct ecommunity_val *)(ecom->val |
4997 | + (i | |
4998 | * ECOMMUNITY_SIZE)); | |
4999 | /* If using "automatic" RT, we only care about the | |
5000 | * local-admin sub-field. | |
5001 | * This is to facilitate using VNI as the RT for EBGP | |
5002 | * peering too. | |
5003 | */ | |
5004 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5005 | if (!is_import_rt_configured(vpn)) | |
5006 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5007 | |
d62a17ae | 5008 | irt = lookup_import_rt(bgp, &eval_tmp); |
5009 | if (irt) | |
5010 | unmap_vni_from_rt(bgp, vpn, irt); | |
5011 | } | |
5012 | } | |
128ea8ab | 5013 | } |
5014 | ||
5015 | /* | |
5016 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5017 | * The mapping will be used during route processing. | |
5018 | */ | |
d62a17ae | 5019 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5020 | { |
c581d8b0 | 5021 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5022 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5023 | |
d62a17ae | 5024 | /* Map RT to VNI */ |
5025 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5026 | } |
5027 | ||
5028 | /* | |
5029 | * Derive Export RT automatically for VNI. | |
5030 | */ | |
d62a17ae | 5031 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5032 | { |
c581d8b0 | 5033 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5034 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5035 | } |
5036 | ||
676f83b9 | 5037 | /* |
5038 | * Derive RD automatically for VNI using passed information - it | |
5039 | * is of the form RouterId:unique-id-for-vni. | |
5040 | */ | |
5041 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5042 | { | |
9e97ff03 CS |
5043 | if (is_vrf_rd_configured(bgp)) |
5044 | return; | |
5045 | ||
92708db6 | 5046 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5047 | } |
5048 | ||
128ea8ab | 5049 | /* |
5050 | * Derive RD automatically for VNI using passed information - it | |
5051 | * is of the form RouterId:unique-id-for-vni. | |
5052 | */ | |
d62a17ae | 5053 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5054 | { |
c44ab6f1 | 5055 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5056 | |
d62a17ae | 5057 | vpn->prd.family = AF_UNSPEC; |
5058 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5059 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5060 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5061 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5062 | } |
5063 | ||
7df407ed CS |
5064 | /* |
5065 | * Lookup L3-VNI | |
5066 | */ | |
5067 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5068 | { | |
5069 | struct list *inst = bm->bgp; | |
5070 | struct listnode *node; | |
5071 | struct bgp *bgp_vrf; | |
5072 | ||
5073 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5074 | if (bgp_vrf->l3vni == vni) | |
5075 | return true; | |
5076 | } | |
5077 | ||
5078 | return false; | |
5079 | } | |
5080 | ||
128ea8ab | 5081 | /* |
5082 | * Lookup VNI. | |
5083 | */ | |
d62a17ae | 5084 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5085 | { |
d62a17ae | 5086 | struct bgpevpn *vpn; |
5087 | struct bgpevpn tmp; | |
128ea8ab | 5088 | |
d62a17ae | 5089 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5090 | tmp.vni = vni; | |
5091 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5092 | return vpn; | |
128ea8ab | 5093 | } |
5094 | ||
5095 | /* | |
5096 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5097 | */ | |
d62a17ae | 5098 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5099 | struct in_addr originator_ip, |
5100 | vrf_id_t tenant_vrf_id, | |
5101 | struct in_addr mcast_grp) | |
128ea8ab | 5102 | { |
d62a17ae | 5103 | struct bgpevpn *vpn; |
128ea8ab | 5104 | |
d62a17ae | 5105 | if (!bgp) |
5106 | return NULL; | |
128ea8ab | 5107 | |
d62a17ae | 5108 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5109 | |
d62a17ae | 5110 | /* Set values - RD and RT set to defaults. */ |
5111 | vpn->vni = vni; | |
5112 | vpn->originator_ip = originator_ip; | |
29c53922 | 5113 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5114 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5115 | |
d62a17ae | 5116 | /* Initialize route-target import and export lists */ |
5117 | vpn->import_rtl = list_new(); | |
5118 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5119 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5120 | vpn->export_rtl = list_new(); |
5121 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5122 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5123 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5124 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5125 | |
d62a17ae | 5126 | /* Initialize EVPN route table. */ |
960035b2 | 5127 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5128 | |
d62a17ae | 5129 | /* Add to hash */ |
5130 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5131 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5132 | return NULL; | |
5133 | } | |
6a8657d0 MK |
5134 | |
5135 | /* add to l2vni list on corresponding vrf */ | |
5136 | bgpevpn_link_to_l3vni(vpn); | |
5137 | ||
c44ab6f1 AK |
5138 | bgp_evpn_vni_es_init(vpn); |
5139 | ||
d62a17ae | 5140 | QOBJ_REG(vpn, bgpevpn); |
5141 | return vpn; | |
128ea8ab | 5142 | } |
5143 | ||
5144 | /* | |
5145 | * Free a given VPN - called in multiple scenarios such as zebra | |
5146 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5147 | * This just frees appropriate memory, caller should have taken other | |
5148 | * needed actions. | |
5149 | */ | |
d62a17ae | 5150 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5151 | { |
c44ab6f1 | 5152 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5153 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5154 | bgp_table_unlock(vpn->route_table); |
5155 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5156 | list_delete(&vpn->import_rtl); |
5157 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5158 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5159 | hash_release(bgp->vnihash, vpn); |
5160 | QOBJ_UNREG(vpn); | |
5161 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5162 | } |
5163 | ||
50f74cf1 | 5164 | /* |
5165 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5166 | */ |
d62a17ae | 5167 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5168 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5169 | { |
40381db7 | 5170 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5171 | } |
5172 | ||
5173 | /* | |
50f74cf1 | 5174 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5175 | */ |
d62a17ae | 5176 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5177 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5178 | { |
40381db7 | 5179 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5180 | } |
5181 | ||
db0e1937 MK |
5182 | /* filter routes which have martian next hops */ |
5183 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5184 | { | |
0291c246 MK |
5185 | afi_t afi; |
5186 | safi_t safi; | |
9bcb3eef | 5187 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5188 | struct bgp_table *table; |
40381db7 | 5189 | struct bgp_path_info *pi; |
db0e1937 MK |
5190 | |
5191 | afi = AFI_L2VPN; | |
5192 | safi = SAFI_EVPN; | |
5193 | ||
5194 | /* Walk entire global routing table and evaluate routes which could be | |
5195 | * imported into this VPN. Note that we cannot just look at the routes | |
5196 | * for the VNI's RD - | |
5197 | * remote routes applicable for this VNI could have any RD. | |
5198 | */ | |
5199 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5200 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5201 | rd_dest = bgp_route_next(rd_dest)) { | |
5202 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5203 | if (!table) |
5204 | continue; | |
5205 | ||
9bcb3eef DS |
5206 | for (dest = bgp_table_top(table); dest; |
5207 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5208 | |
9bcb3eef | 5209 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5210 | pi = pi->next) { |
db0e1937 MK |
5211 | |
5212 | /* Consider "valid" remote routes applicable for | |
5213 | * this VNI. */ | |
40381db7 DS |
5214 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5215 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5216 | continue; |
9bcb3eef DS |
5217 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5218 | pi->sub_type, pi->attr, | |
5219 | dest)) { | |
b54892e0 | 5220 | const struct prefix *p = |
9bcb3eef | 5221 | bgp_dest_get_prefix(dest); |
db0e1937 | 5222 | |
b54892e0 DS |
5223 | if (bgp_debug_update(pi->peer, p, NULL, |
5224 | 1)) { | |
5225 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5226 | |
b54892e0 | 5227 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5228 | attr_str, |
5229 | sizeof(attr_str)); | |
db0e1937 | 5230 | |
db0e1937 | 5231 | zlog_debug( |
56ca3b5b | 5232 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5233 | bgp->vrf_id, dest, |
db0e1937 | 5234 | attr_str); |
b54892e0 | 5235 | } |
db0e1937 | 5236 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5237 | p, pi); |
db0e1937 | 5238 | |
9bcb3eef | 5239 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5240 | safi); |
db0e1937 | 5241 | } |
db0e1937 MK |
5242 | } |
5243 | } | |
5244 | } | |
5245 | ||
5246 | return 0; | |
5247 | } | |
5248 | ||
128ea8ab | 5249 | /* |
5250 | * Handle del of a local MACIP. | |
5251 | */ | |
d62a17ae | 5252 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5253 | struct ipaddr *ip, int state) |
128ea8ab | 5254 | { |
d62a17ae | 5255 | struct bgpevpn *vpn; |
5256 | struct prefix_evpn p; | |
9bcb3eef | 5257 | struct bgp_dest *dest; |
128ea8ab | 5258 | |
d62a17ae | 5259 | /* Lookup VNI hash - should exist. */ |
5260 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5261 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5262 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5263 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5264 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5265 | return -1; | |
5266 | } | |
128ea8ab | 5267 | |
d62a17ae | 5268 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5269 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5270 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5271 | delete_evpn_route(bgp, vpn, &p); | |
5272 | } else { | |
5273 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5274 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5275 | if (dest) | |
5276 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5277 | } |
128ea8ab | 5278 | |
d62a17ae | 5279 | return 0; |
128ea8ab | 5280 | } |
5281 | ||
5282 | /* | |
5283 | * Handle add of a local MACIP. | |
5284 | */ | |
d62a17ae | 5285 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5286 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5287 | { |
d62a17ae | 5288 | struct bgpevpn *vpn; |
5289 | struct prefix_evpn p; | |
128ea8ab | 5290 | |
d62a17ae | 5291 | /* Lookup VNI hash - should exist. */ |
5292 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5293 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5294 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5295 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5296 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5297 | return -1; | |
5298 | } | |
128ea8ab | 5299 | |
d62a17ae | 5300 | /* Create EVPN type-2 route and schedule for processing. */ |
5301 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5302 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
d62a17ae | 5303 | char buf[ETHER_ADDR_STRLEN]; |
5304 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5305 | |
af4c2728 | 5306 | flog_err( |
e50f7cfd | 5307 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5308 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5309 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5310 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5311 | ? "sticky gateway" | |
5312 | : "", | |
d62a17ae | 5313 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5314 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5315 | return -1; |
5316 | } | |
128ea8ab | 5317 | |
d62a17ae | 5318 | return 0; |
128ea8ab | 5319 | } |
5320 | ||
e3b78da8 | 5321 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5322 | struct bgp *bgp_vrf) |
5323 | { | |
e3b78da8 | 5324 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5325 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5326 | |
5e53dce3 T |
5327 | bgp_evpn = bgp_get_evpn(); |
5328 | assert(bgp_evpn); | |
6a8657d0 | 5329 | |
6a8657d0 MK |
5330 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5331 | bgpevpn_link_to_l3vni(vpn); | |
5332 | } | |
5333 | ||
14e814ea CS |
5334 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5335 | struct ethaddr *svi_rmac, | |
5336 | struct ethaddr *vrr_rmac, | |
0483af6e | 5337 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5338 | ifindex_t svi_ifindex, |
5339 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5340 | { |
5341 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5342 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5343 | struct listnode *node = NULL; |
5344 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5345 | as_t as = 0; |
5346 | ||
3621ebc5 | 5347 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5348 | * auto-creatio |
5349 | */ | |
5e53dce3 T |
5350 | bgp_evpn = bgp_get_evpn(); |
5351 | if (!bgp_evpn) { | |
af4c2728 | 5352 | flog_err( |
e50f7cfd | 5353 | EC_BGP_NO_DFLT, |
3621ebc5 | 5354 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5355 | l3vni); |
fe1dc5a3 MK |
5356 | return -1; |
5357 | } | |
5e53dce3 | 5358 | as = bgp_evpn->as; |
fe1dc5a3 | 5359 | |
0437e105 | 5360 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5361 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5362 | if (!bgp_vrf) { |
5363 | ||
5364 | int ret = 0; | |
5365 | ||
5d5393b9 DL |
5366 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5367 | vrf_id == VRF_DEFAULT | |
5368 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5369 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5370 | switch (ret) { |
fe1dc5a3 | 5371 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5372 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5373 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5374 | return -1; |
5375 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5376 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5377 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5378 | return -1; |
5379 | } | |
5380 | ||
5381 | /* mark as auto created */ | |
5382 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5383 | } | |
5384 | ||
0483af6e | 5385 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5386 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5387 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5388 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5389 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5390 | |
14e814ea CS |
5391 | /* copy anycast MAC from VRR MAC */ |
5392 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5393 | /* copy sys RMAC from SVI MAC */ | |
5394 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5395 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5396 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5397 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5398 | ||
5399 | if (bgp_debug_zebra(NULL)) { | |
5400 | char buf[ETHER_ADDR_STRLEN]; | |
5401 | char buf1[ETHER_ADDR_STRLEN]; | |
5402 | char buf2[ETHER_ADDR_STRLEN]; | |
5403 | ||
5404 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5405 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5406 | bgp_vrf->l3vni, | |
5407 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5408 | : "disable", | |
5409 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5410 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5411 | buf1, sizeof(buf1)), | |
5412 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5413 | buf2, sizeof(buf2)), | |
5414 | is_anycast_mac ? "Enable" : "Disable"); | |
5415 | } | |
c48d9f5f | 5416 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5417 | if (filter) { |
c48d9f5f MK |
5418 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5419 | ||
10f70510 AD |
5420 | /* |
5421 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5422 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5423 | * that explicitly. | |
5424 | */ | |
5425 | } else { | |
5426 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5427 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5428 | ||
5429 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5430 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5431 | ||
5432 | /* | |
5433 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5434 | * flag, update all MACIP routes in this VNI | |
5435 | */ | |
5436 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5437 | update_all_type2_routes(bgp_evpn, vpn); | |
5438 | } | |
5439 | } | |
5440 | } | |
5441 | ||
530e8a6e | 5442 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5443 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5444 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5445 | else |
5446 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5447 | ||
c581d8b0 MK |
5448 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5449 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5450 | |
5451 | /* auto derive RD */ | |
676f83b9 | 5452 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5453 | |
6a8657d0 | 5454 | /* link all corresponding l2vnis */ |
5e53dce3 | 5455 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5456 | (void (*)(struct hash_bucket *, |
996c9314 | 5457 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5458 | bgp_vrf); |
5459 | ||
c48d9f5f MK |
5460 | /* Only update all corresponding type-2 routes if we are advertising two |
5461 | * labels along with type-2 routes | |
5462 | */ | |
5463 | if (!filter) | |
5464 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5465 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5466 | |
06d2e8f3 MK |
5467 | /* advertise type-5 routes if needed */ |
5468 | update_advertise_vrf_routes(bgp_vrf); | |
5469 | ||
5ba238b7 MK |
5470 | /* install all remote routes belonging to this l3vni into correspondng |
5471 | * vrf */ | |
5472 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5473 | |
5474 | return 0; | |
5475 | } | |
5476 | ||
996c9314 | 5477 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5478 | { |
5479 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5480 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5481 | struct listnode *node = NULL; |
18abc1eb | 5482 | struct listnode *next = NULL; |
f1f8b53c | 5483 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5484 | |
5485 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5486 | if (!bgp_vrf) { | |
af4c2728 | 5487 | flog_err( |
e50f7cfd | 5488 | EC_BGP_NO_DFLT, |
996c9314 LB |
5489 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5490 | l3vni); | |
fe1dc5a3 MK |
5491 | return -1; |
5492 | } | |
5493 | ||
5e53dce3 T |
5494 | bgp_evpn = bgp_get_evpn(); |
5495 | if (!bgp_evpn) { | |
af4c2728 | 5496 | flog_err( |
e50f7cfd | 5497 | EC_BGP_NO_DFLT, |
3621ebc5 | 5498 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5499 | l3vni); |
f1f8b53c MK |
5500 | return -1; |
5501 | } | |
5502 | ||
d846168d | 5503 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5504 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5505 | * routes. This will uninstalling the routes from zebra and decremnt the |
5506 | * bgp info count. | |
523cafc4 | 5507 | */ |
d846168d | 5508 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5509 | |
06d2e8f3 MK |
5510 | /* delete/withdraw all type-5 routes */ |
5511 | delete_withdraw_vrf_routes(bgp_vrf); | |
5512 | ||
fe1dc5a3 MK |
5513 | /* remove the l3vni from vrf instance */ |
5514 | bgp_vrf->l3vni = 0; | |
5515 | ||
5516 | /* remove the Rmac from the BGP vrf */ | |
5517 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5518 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5519 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5520 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5521 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5522 | |
530e8a6e | 5523 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5524 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5525 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5526 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5527 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5528 | } |
530e8a6e CS |
5529 | |
5530 | /* remove default export RT */ | |
5531 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5532 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5533 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5534 | } |
fe1dc5a3 | 5535 | |
f1f8b53c | 5536 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5537 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5538 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5539 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5540 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5541 | } |
5542 | } | |
fe1dc5a3 | 5543 | |
18abc1eb | 5544 | /* If any L2VNIs point to this instance, unlink them. */ |
5545 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5546 | bgpevpn_unlink_from_l3vni(vpn); | |
5547 | ||
ff9d54fb CS |
5548 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5549 | ||
fe1dc5a3 MK |
5550 | /* Delete the instance if it was autocreated */ |
5551 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5552 | bgp_delete(bgp_vrf); | |
5553 | ||
5554 | return 0; | |
5555 | } | |
5556 | ||
128ea8ab | 5557 | /* |
5558 | * Handle del of a local VNI. | |
5559 | */ | |
d62a17ae | 5560 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5561 | { |
d62a17ae | 5562 | struct bgpevpn *vpn; |
128ea8ab | 5563 | |
d62a17ae | 5564 | /* Locate VNI hash */ |
5565 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5566 | if (!vpn) { | |
1e00627b | 5567 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5568 | flog_warn( |
e50f7cfd | 5569 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5570 | "%u: VNI hash entry for VNI %u not found at DEL", |
5571 | bgp->vrf_id, vni); | |
d62a17ae | 5572 | return 0; |
5573 | } | |
128ea8ab | 5574 | |
d62a17ae | 5575 | /* Remove all local EVPN routes and schedule for processing (to |
5576 | * withdraw from peers). | |
5577 | */ | |
5578 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5579 | |
db0e1937 MK |
5580 | /* |
5581 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5582 | */ | |
5583 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5584 | ||
d62a17ae | 5585 | /* Clear "live" flag and see if hash needs to be freed. */ |
5586 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5587 | if (!is_vni_configured(vpn)) | |
5588 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5589 | |
d62a17ae | 5590 | return 0; |
128ea8ab | 5591 | } |
5592 | ||
5593 | /* | |
d1911c26 | 5594 | * Handle add (or update) of a local VNI. The VNI changes we care |
5595 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5596 | */ |
d62a17ae | 5597 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5598 | struct in_addr originator_ip, |
5599 | vrf_id_t tenant_vrf_id, | |
5600 | struct in_addr mcast_grp) | |
5601 | ||
d62a17ae | 5602 | { |
5603 | struct bgpevpn *vpn; | |
5604 | struct prefix_evpn p; | |
5605 | ||
d62a17ae | 5606 | /* Lookup VNI. If present and no change, exit. */ |
5607 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5608 | if (vpn) { |
29c53922 | 5609 | |
d1911c26 | 5610 | if (is_vni_live(vpn) |
5611 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5612 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5613 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5614 | /* Probably some other param has changed that we don't | |
5615 | * care about. */ | |
5616 | return 0; | |
5617 | ||
76d07c7a AK |
5618 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5619 | ||
d1911c26 | 5620 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5621 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5622 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5623 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5624 | bgpevpn_link_to_l3vni(vpn); |
5625 | } | |
29c53922 | 5626 | |
d1911c26 | 5627 | /* If tunnel endpoint IP has changed, update (and delete prior |
5628 | * type-3 route, if needed.) | |
5629 | */ | |
5630 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5631 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5632 | |
d1911c26 | 5633 | /* Update all routes with new endpoint IP and/or export RT |
5634 | * for VRFs | |
5635 | */ | |
5636 | if (is_vni_live(vpn)) | |
5637 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5638 | } |
5639 | ||
5640 | /* Create or update as appropriate. */ | |
5641 | if (!vpn) { | |
76d07c7a AK |
5642 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5643 | mcast_grp); | |
d62a17ae | 5644 | if (!vpn) { |
af4c2728 | 5645 | flog_err( |
e50f7cfd | 5646 | EC_BGP_VNI, |
d62a17ae | 5647 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5648 | bgp->vrf_id, vni); | |
5649 | return -1; | |
5650 | } | |
5651 | } | |
5652 | ||
db0e1937 | 5653 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5654 | if (is_vni_live(vpn)) |
5655 | return 0; | |
5656 | ||
d62a17ae | 5657 | /* Mark as "live" */ |
5658 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5659 | ||
db0e1937 MK |
5660 | /* tunnel is now active, add tunnel-ip to db */ |
5661 | bgp_tip_add(bgp, &originator_ip); | |
5662 | ||
5663 | /* filter routes as nexthop database has changed */ | |
5664 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5665 | ||
fd069644 DS |
5666 | /* |
5667 | * Create EVPN type-3 route and schedule for processing. | |
5668 | * | |
5669 | * RT-3 only if doing head-end replication | |
5670 | */ | |
833b8a50 AK |
5671 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5672 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5673 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5674 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5675 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5676 | "%u: Type3 route creation failure for VNI %u", | |
5677 | bgp->vrf_id, vni); | |
5678 | return -1; | |
5679 | } | |
d62a17ae | 5680 | } |
5681 | ||
5682 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5683 | * VNI, | |
5684 | * install them. | |
5685 | */ | |
5686 | install_routes_for_vni(bgp, vpn); | |
5687 | ||
d7d97010 MK |
5688 | /* If we are advertising gateway mac-ip |
5689 | It needs to be conveyed again to zebra */ | |
5690 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5691 | ||
df070e6f CS |
5692 | /* advertise svi mac-ip knob to zebra */ |
5693 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5694 | ||
d62a17ae | 5695 | return 0; |
b18825eb | 5696 | } |
14c1a7bf | 5697 | |
fd069644 DS |
5698 | /* |
5699 | * Handle change in setting for BUM handling. The supported values | |
5700 | * are head-end replication and dropping all BUM packets. Any change | |
5701 | * should be registered with zebra. Also, if doing head-end replication, | |
5702 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5703 | * to be dropped, the RT-3s must be withdrawn. | |
5704 | */ | |
5705 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5706 | { | |
5707 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5708 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5709 | "Flooding" : "Flooding Disabled"); | |
5710 | ||
5711 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5712 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5713 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5714 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5715 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5716 | } | |
5717 | ||
7724c0a1 | 5718 | /* |
5719 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5720 | * EVPN routes from peers. | |
5721 | */ | |
d62a17ae | 5722 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5723 | { |
e3b78da8 | 5724 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5725 | void *))cleanup_vni_on_disable, |
5726 | bgp); | |
7724c0a1 | 5727 | } |
5728 | ||
14c1a7bf | 5729 | /* |
5730 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5731 | * BGP instance (default) is being freed. | |
5732 | */ | |
d62a17ae | 5733 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5734 | { |
1525e99f | 5735 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5736 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5737 | bgp); |
5738 | ||
5739 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5740 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5741 | |
5742 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5743 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5744 | |
5745 | hash_free(bgp->vnihash); | |
d62a17ae | 5746 | bgp->vnihash = NULL; |
1525e99f | 5747 | |
6a154c88 DL |
5748 | list_delete(&bgp->vrf_import_rtl); |
5749 | list_delete(&bgp->vrf_export_rtl); | |
5750 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5751 | } |
5752 | ||
5753 | /* | |
5754 | * Initialization for EVPN | |
5755 | * Create | |
5756 | * VNI hash table | |
5757 | * hash for RT to VNI | |
14c1a7bf | 5758 | */ |
d62a17ae | 5759 | void bgp_evpn_init(struct bgp *bgp) |
5760 | { | |
5761 | bgp->vnihash = | |
5762 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
5763 | bgp->import_rt_hash = | |
5764 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5765 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5766 | bgp->vrf_import_rt_hash = |
5767 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5768 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5769 | bgp->vrf_import_rtl = list_new(); |
5770 | bgp->vrf_import_rtl->cmp = | |
5771 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5772 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5773 | bgp->vrf_export_rtl = list_new(); |
5774 | bgp->vrf_export_rtl->cmp = | |
5775 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5776 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5777 | bgp->l2vnis = list_new(); |
64465785 | 5778 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5779 | /* By default Duplicate Address Dection is enabled. |
5780 | * Max-moves (N) 5, detection time (M) 180 | |
5781 | * default action is warning-only | |
5782 | * freeze action permanently freezes address, | |
5783 | * and freeze time (auto-recovery) is disabled. | |
5784 | */ | |
5785 | if (bgp->evpn_info) { | |
5786 | bgp->evpn_info->dup_addr_detect = true; | |
5787 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5788 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5789 | bgp->evpn_info->dad_freeze = false; | |
5790 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5791 | /* Initialize zebra vxlan */ |
5792 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
5793 | /* Enable PIP feature by default for bgp vrf instance */ |
5794 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
5795 | struct bgp *bgp_default; | |
5796 | ||
5797 | bgp->evpn_info->advertise_pip = true; | |
5798 | bgp_default = bgp_get_default(); | |
5799 | if (bgp_default) | |
5800 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
5801 | } | |
85c8d83b | 5802 | } |
fd069644 DS |
5803 | |
5804 | /* Default BUM handling is to do head-end replication. */ | |
5805 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5806 | } |
10ebe1ab MK |
5807 | |
5808 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5809 | { | |
5810 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5811 | } | |
44c69747 LK |
5812 | |
5813 | /* | |
5814 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
5815 | */ | |
5f040085 | 5816 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
5817 | { |
5818 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5819 | ||
5820 | if (!pfx || pfx->family != AF_EVPN) | |
5821 | return 0; | |
5822 | ||
5823 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
5824 | return 0; | |
5825 | ||
5826 | return evp->prefix.prefix_addr.ip_prefix_length; | |
5827 | } | |
7c312383 AD |
5828 | |
5829 | /* | |
5830 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
5831 | */ | |
5a1ae2c2 | 5832 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
5833 | { |
5834 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5835 | ||
5836 | /* | |
e11329ca | 5837 | * EVPN routes should be marked as valid only if the nexthop is |
5838 | * reachable. Only if this happens, the route should be imported | |
5839 | * (into VNI or VRF routing tables) and/or advertised. | |
5840 | * Note: This is currently applied for EVPN type-2, type-3 and | |
5841 | * type-5 routes. It may be tweaked later on for other routes, or | |
5842 | * even removed completely when all routes are handled. | |
7c312383 AD |
5843 | */ |
5844 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 5845 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
5846 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
5847 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
5848 | return true; |
5849 | ||
5850 | return false; | |
5851 | } |