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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 | 33 | |
23d0a753 DA |
34 | #include "lib/printfrr.h" |
35 | ||
7ef5a232 PG |
36 | #include "bgpd/bgp_attr_evpn.h" |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 42 | #include "bgpd/bgp_label.h" |
7ef5a232 | 43 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 44 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 45 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 46 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 47 | #include "bgpd/bgp_encap_types.h" |
48 | #include "bgpd/bgp_debug.h" | |
14454c9f | 49 | #include "bgpd/bgp_errors.h" |
128ea8ab | 50 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 51 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 52 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 53 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 54 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 55 | #include "bgpd/bgp_vty.h" |
128ea8ab | 56 | |
57 | /* | |
58 | * Definitions and external declarations. | |
59 | */ | |
96244aca DL |
60 | DEFINE_QOBJ_TYPE(bgpevpn); |
61 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 62 | |
63 | ||
64 | /* | |
65 | * Static function declarations | |
66 | */ | |
d62a17ae | 67 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
9c7edc03 | 68 | static 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; | |
c44ab6f1 | 595 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 596 | |
597 | /* Check socket. */ | |
598 | if (!zclient || zclient->sock < 0) | |
599 | return 0; | |
600 | ||
601 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
602 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
603 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
604 | zlog_debug( |
605 | "%s: No zebra instance to talk to, not installing remote macip", | |
606 | __func__); | |
d62a17ae | 607 | return 0; |
bb4ef1ae | 608 | } |
c44ab6f1 AK |
609 | |
610 | if (!esi) | |
611 | esi = zero_esi; | |
d62a17ae | 612 | s = zclient->obuf; |
613 | stream_reset(s); | |
614 | ||
996c9314 LB |
615 | zclient_create_header( |
616 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
617 | bgp->vrf_id); | |
d62a17ae | 618 | stream_putl(s, vpn->vni); |
3714a385 | 619 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 620 | /* IP address length and IP address, if any. */ |
3714a385 | 621 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 622 | stream_putl(s, 0); |
623 | else { | |
3714a385 | 624 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 625 | : IPV6_MAX_BYTELEN; |
626 | stream_putl(s, ipa_len); | |
3714a385 | 627 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 628 | } |
9c7edc03 AK |
629 | /* If the ESI is valid that becomes the nexthop; tape out the |
630 | * VTEP-IP for that case | |
c44ab6f1 | 631 | */ |
9c7edc03 | 632 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 633 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
634 | else |
635 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 636 | |
ead40654 | 637 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 638 | /* Also TX the sequence number of the best route. */ |
639 | if (add) { | |
ead40654 | 640 | stream_putc(s, flags); |
f07e1c99 | 641 | stream_putl(s, seq); |
c44ab6f1 | 642 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 643 | } |
d62a17ae | 644 | |
645 | stream_putw_at(s, 0, stream_get_endp(s)); | |
646 | ||
647 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 648 | zlog_debug( |
c0d72166 | 649 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4", |
996c9314 | 650 | add ? "ADD" : "DEL", vpn->vni, |
c0d72166 DS |
651 | &p->prefix.macip_addr.mac, &p->prefix.macip_addr.ip, |
652 | flags, seq, &remote_vtep_ip); | |
d62a17ae | 653 | |
654 | return zclient_send_message(zclient); | |
7ef5a232 | 655 | } |
b18825eb | 656 | |
128ea8ab | 657 | /* |
658 | * Add (update) or delete remote VTEP from zebra. | |
659 | */ | |
d62a17ae | 660 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
661 | const struct prefix_evpn *p, |
662 | int flood_control, int add) | |
128ea8ab | 663 | { |
d62a17ae | 664 | struct stream *s; |
128ea8ab | 665 | |
d62a17ae | 666 | /* Check socket. */ |
667 | if (!zclient || zclient->sock < 0) | |
668 | return 0; | |
128ea8ab | 669 | |
d62a17ae | 670 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
671 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
672 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
673 | zlog_debug( |
674 | "%s: No zebra instance to talk to, not installing remote vtep", | |
675 | __func__); | |
d62a17ae | 676 | return 0; |
bb4ef1ae | 677 | } |
128ea8ab | 678 | |
d62a17ae | 679 | s = zclient->obuf; |
680 | stream_reset(s); | |
128ea8ab | 681 | |
996c9314 LB |
682 | zclient_create_header( |
683 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
684 | bgp->vrf_id); | |
d62a17ae | 685 | stream_putl(s, vpn->vni); |
3714a385 | 686 | if (is_evpn_prefix_ipaddr_v4(p)) |
687 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
688 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 689 | flog_err( |
e50f7cfd | 690 | EC_BGP_VTEP_INVALID, |
d62a17ae | 691 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
692 | add ? "ADD" : "DEL", vpn->vni); | |
693 | return -1; | |
694 | } | |
b16dd019 | 695 | stream_putl(s, flood_control); |
128ea8ab | 696 | |
d62a17ae | 697 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 698 | |
d62a17ae | 699 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 700 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 701 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 702 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 703 | |
d62a17ae | 704 | return zclient_send_message(zclient); |
128ea8ab | 705 | } |
706 | ||
342dd0c6 | 707 | /* |
708 | * Build extended communities for EVPN prefix route. | |
709 | */ | |
710 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
711 | struct attr *attr) | |
712 | { | |
713 | struct ecommunity ecom_encap; | |
342dd0c6 | 714 | struct ecommunity_val eval; |
715 | struct ecommunity_val eval_rmac; | |
716 | bgp_encap_types tnl_type; | |
717 | struct listnode *node, *nnode; | |
718 | struct ecommunity *ecom; | |
fab92da7 | 719 | struct ecommunity *old_ecom; |
342dd0c6 | 720 | struct list *vrf_export_rtl = NULL; |
721 | ||
722 | /* Encap */ | |
723 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
724 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
725 | encode_encap_extcomm(tnl_type, &eval); | |
726 | ecom_encap.size = 1; | |
34540b0d | 727 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 728 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 729 | |
730 | /* Add Encap */ | |
fab92da7 | 731 | if (attr->ecommunity) { |
732 | old_ecom = attr->ecommunity; | |
733 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
734 | if (!old_ecom->refcnt) | |
735 | ecommunity_free(&old_ecom); | |
736 | } else | |
737 | ecom = ecommunity_dup(&ecom_encap); | |
738 | attr->ecommunity = ecom; | |
5bbd2cc1 | 739 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 740 | |
741 | /* Add the export RTs for L3VNI/VRF */ | |
742 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
743 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
744 | attr->ecommunity = | |
745 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 746 | |
747 | /* add the router mac extended community */ | |
748 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 749 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 750 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 751 | } |
752 | ||
753 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
754 | } | |
755 | ||
128ea8ab | 756 | /* |
1ec31309 | 757 | * Build extended communities for EVPN route. |
758 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
759 | * and ENCAP extended communities are applicable for all routes. | |
760 | * The default gateway extended community and MAC mobility (sticky) extended | |
761 | * community are added as needed based on passed settings - only for type-2 | |
762 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
763 | * added, if present, based on passed settings - only for non-link-local | |
764 | * type-2 routes. | |
128ea8ab | 765 | */ |
7ec156a9 | 766 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 767 | int add_l3_ecomm) |
128ea8ab | 768 | { |
d62a17ae | 769 | struct ecommunity ecom_encap; |
770 | struct ecommunity ecom_sticky; | |
ead40654 | 771 | struct ecommunity ecom_default_gw; |
68e33151 | 772 | struct ecommunity ecom_na; |
d62a17ae | 773 | struct ecommunity_val eval; |
774 | struct ecommunity_val eval_sticky; | |
ead40654 | 775 | struct ecommunity_val eval_default_gw; |
bc59a672 | 776 | struct ecommunity_val eval_rmac; |
68e33151 | 777 | struct ecommunity_val eval_na; |
9c7edc03 | 778 | bool proxy; |
68e33151 | 779 | |
d62a17ae | 780 | bgp_encap_types tnl_type; |
781 | struct listnode *node, *nnode; | |
782 | struct ecommunity *ecom; | |
d7c0a89a | 783 | uint32_t seqnum; |
7a3e76f1 | 784 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 785 | |
d62a17ae | 786 | /* Encap */ |
787 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
788 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
789 | encode_encap_extcomm(tnl_type, &eval); | |
790 | ecom_encap.size = 1; | |
34540b0d | 791 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 792 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 793 | |
d62a17ae | 794 | /* Add Encap */ |
795 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
5bbd2cc1 | 796 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 797 | |
7a3e76f1 | 798 | /* Add the export RTs for L2VNI */ |
d62a17ae | 799 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
800 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 801 | |
1ec31309 | 802 | /* Add the export RTs for L3VNI if told to - caller determines |
803 | * when this should be done. | |
523cafc4 | 804 | */ |
1ec31309 | 805 | if (add_l3_ecomm) { |
7ec156a9 MK |
806 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
807 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
808 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
809 | ecom)) | |
996c9314 LB |
810 | attr->ecommunity = ecommunity_merge( |
811 | attr->ecommunity, ecom); | |
7ec156a9 | 812 | } |
f1f8b53c | 813 | } |
7a3e76f1 | 814 | |
1ec31309 | 815 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 816 | if (attr->sticky) { |
817 | seqnum = 0; | |
818 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
819 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
820 | ecom_sticky.size = 1; | |
34540b0d | 821 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 822 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 823 | attr->ecommunity = |
824 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
825 | } | |
c85c03c7 | 826 | |
1ec31309 | 827 | /* Add RMAC, if told to. */ |
828 | if (add_l3_ecomm) { | |
bc59a672 | 829 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 830 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
831 | } |
832 | ||
1ec31309 | 833 | /* Add default gateway, if needed. */ |
ead40654 MK |
834 | if (attr->default_gw) { |
835 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
836 | encode_default_gw_extcomm(&eval_default_gw); | |
837 | ecom_default_gw.size = 1; | |
34540b0d | 838 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 839 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
996c9314 LB |
840 | attr->ecommunity = |
841 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
842 | } |
843 | ||
9c7edc03 AK |
844 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
845 | if (attr->router_flag || proxy) { | |
68e33151 | 846 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 847 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 848 | ecom_na.size = 1; |
34540b0d | 849 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 CS |
850 | ecom_na.val = (uint8_t *)eval_na.val; |
851 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
852 | &ecom_na); | |
853 | } | |
854 | ||
d62a17ae | 855 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 856 | } |
857 | ||
858 | /* | |
859 | * Add MAC mobility extended community to attribute. | |
860 | */ | |
d7c0a89a | 861 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 862 | { |
863 | struct ecommunity ecom_tmp; | |
864 | struct ecommunity_val eval; | |
d7c0a89a | 865 | uint8_t *ecom_val_ptr; |
f6e07e1b | 866 | uint32_t i; |
d7c0a89a | 867 | uint8_t *pnt; |
d62a17ae | 868 | int type = 0; |
869 | int sub_type = 0; | |
870 | ||
871 | /* Build MM */ | |
872 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
873 | ||
874 | /* Find current MM ecommunity */ | |
421bb26a | 875 | ecom_val_ptr = NULL; |
d62a17ae | 876 | |
877 | if (attr->ecommunity) { | |
878 | for (i = 0; i < attr->ecommunity->size; i++) { | |
4371bf91 PG |
879 | pnt = attr->ecommunity->val + |
880 | (i * attr->ecommunity->unit_size); | |
d62a17ae | 881 | type = *pnt++; |
882 | sub_type = *pnt++; | |
883 | ||
884 | if (type == ECOMMUNITY_ENCODE_EVPN | |
885 | && sub_type | |
886 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 887 | ecom_val_ptr = |
4371bf91 PG |
888 | (attr->ecommunity->val + |
889 | (i * attr->ecommunity->unit_size)); | |
d62a17ae | 890 | break; |
891 | } | |
892 | } | |
893 | } | |
894 | ||
895 | /* Update the existing MM ecommunity */ | |
421bb26a | 896 | if (ecom_val_ptr) { |
4371bf91 PG |
897 | memcpy(ecom_val_ptr, eval.val, sizeof(char) |
898 | * attr->ecommunity->unit_size); | |
d62a17ae | 899 | } |
900 | /* Add MM to existing */ | |
901 | else { | |
902 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
903 | ecom_tmp.size = 1; | |
34540b0d | 904 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 905 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 906 | |
f9a78910 DS |
907 | if (attr->ecommunity) |
908 | attr->ecommunity = | |
909 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
910 | else | |
911 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 912 | } |
128ea8ab | 913 | } |
914 | ||
915 | /* Install EVPN route into zebra. */ | |
d62a17ae | 916 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
917 | const struct prefix_evpn *p, |
918 | struct bgp_path_info *pi) | |
128ea8ab | 919 | { |
d62a17ae | 920 | int ret; |
d594a14c | 921 | uint8_t flags; |
b16dd019 | 922 | int flood_control; |
9c7edc03 | 923 | uint32_t seq; |
128ea8ab | 924 | |
d594a14c AK |
925 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
926 | flags = 0; | |
9c7edc03 AK |
927 | |
928 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
929 | if (pi->attr->sticky) | |
930 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
931 | if (pi->attr->default_gw) | |
932 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
933 | if (is_evpn_prefix_ipaddr_v6(p) && | |
934 | pi->attr->router_flag) | |
935 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
936 | ||
937 | seq = mac_mobility_seqnum(pi->attr); | |
938 | /* if local ES notify zebra that this is a sync path */ | |
939 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
940 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
941 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
942 | SET_FLAG(flags, | |
943 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
944 | } | |
945 | } else { | |
946 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
947 | return 0; | |
948 | ||
949 | /* if a local path is being turned around and sent | |
950 | * to zebra it is because it is a sync path on | |
951 | * a local ES | |
952 | */ | |
953 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
954 | /* supply the highest peer seq number to zebra | |
955 | * for MM seq syncing | |
956 | */ | |
957 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
958 | /* if any of the paths from the peer have the ROUTER | |
959 | * flag set install the local entry as a router entry | |
960 | */ | |
961 | if (is_evpn_prefix_ipaddr_v6(p) && | |
962 | (pi->attr->es_flags & | |
963 | ATTR_ES_PEER_ROUTER)) | |
964 | SET_FLAG(flags, | |
965 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
966 | ||
967 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
968 | SET_FLAG(flags, | |
969 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
970 | } | |
971 | ||
d594a14c | 972 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
973 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
974 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
975 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
976 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 977 | } else { |
2a3f51cf | 978 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
979 | case PMSI_TNLTYPE_INGR_REPL: |
980 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
981 | break; | |
982 | ||
983 | case PMSI_TNLTYPE_PIM_SM: | |
984 | flood_control = VXLAN_FLOOD_PIM_SM; | |
985 | break; | |
986 | ||
987 | default: | |
988 | flood_control = VXLAN_FLOOD_DISABLED; | |
989 | break; | |
990 | } | |
991 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 992 | } |
128ea8ab | 993 | |
d62a17ae | 994 | return ret; |
128ea8ab | 995 | } |
996 | ||
997 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 998 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 999 | const struct prefix_evpn *p, |
d62a17ae | 1000 | struct in_addr remote_vtep_ip) |
128ea8ab | 1001 | { |
d62a17ae | 1002 | int ret; |
128ea8ab | 1003 | |
d62a17ae | 1004 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1005 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1006 | 0, 0, 0, NULL); |
1007 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1008 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1009 | else |
b16dd019 AK |
1010 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1011 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1012 | |
d62a17ae | 1013 | return ret; |
128ea8ab | 1014 | } |
1015 | ||
1016 | /* | |
1017 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1018 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1019 | * from peers. | |
1020 | */ | |
d62a17ae | 1021 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1022 | struct bgp_dest *dest, |
9c7edc03 AK |
1023 | struct bgp_path_info *old_local, |
1024 | struct bgp_path_info *new_select) | |
128ea8ab | 1025 | { |
9bcb3eef | 1026 | struct bgp_dest *global_dest; |
40381db7 | 1027 | struct bgp_path_info *pi; |
d62a17ae | 1028 | afi_t afi = AFI_L2VPN; |
1029 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1030 | |
9c7edc03 | 1031 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1032 | char esi_buf[ESI_STR_LEN]; |
1033 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1034 | struct prefix_evpn *evp = |
1035 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1036 | |
2dbe669b DA |
1037 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1038 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1039 | sizeof(esi_buf)), | |
1040 | new_select ? esi_to_str(&new_select->attr->esi, | |
1041 | esi_buf2, sizeof(esi_buf2)) | |
1042 | : ""); | |
9c7edc03 AK |
1043 | } |
1044 | ||
d62a17ae | 1045 | /* Locate route node in the global EVPN routing table. Note that |
1046 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1047 | * L3VPN routes. | |
1048 | */ | |
c44ab6f1 AK |
1049 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1050 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1051 | &vpn->prd); | |
9bcb3eef | 1052 | if (global_dest) { |
d62a17ae | 1053 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1054 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1055 | |
d62a17ae | 1056 | /* Schedule for processing - withdraws to peers happen from |
1057 | * this table. | |
1058 | */ | |
40381db7 | 1059 | if (pi) |
9bcb3eef DS |
1060 | bgp_process(bgp, global_dest, afi, safi); |
1061 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1062 | } |
128ea8ab | 1063 | |
d62a17ae | 1064 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1065 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1066 | } |
1067 | ||
1068 | /* | |
1069 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1070 | * if appropriate. | |
c44ab6f1 | 1071 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1072 | */ |
c44ab6f1 | 1073 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1074 | struct bgp_dest *dest) |
d62a17ae | 1075 | { |
4b7e6066 DS |
1076 | struct bgp_path_info *old_select, *new_select; |
1077 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1078 | afi_t afi = AFI_L2VPN; |
1079 | safi_t safi = SAFI_EVPN; | |
1080 | int ret = 0; | |
1081 | ||
1082 | /* Compute the best path. */ | |
9bcb3eef | 1083 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1084 | afi, safi); |
1085 | old_select = old_and_new.old; | |
1086 | new_select = old_and_new.new; | |
1087 | ||
1088 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1089 | * update to zebra RIB. |
1090 | * Remote routes and SYNC route (i.e. local routes with | |
1091 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1092 | * change. | |
d62a17ae | 1093 | */ |
1094 | if (old_select && old_select == new_select | |
1095 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1096 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1097 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1098 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1099 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1100 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1101 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1102 | ret = evpn_zebra_install( |
9bcb3eef DS |
1103 | bgp, vpn, |
1104 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1105 | dest), | |
d594a14c | 1106 | old_select); |
1defdda8 | 1107 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1108 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1109 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1110 | return ret; |
1111 | } | |
1112 | ||
1113 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1114 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1115 | |
1116 | /* bestpath has changed; update relevant fields and install or uninstall | |
1117 | * into the zebra RIB. | |
1118 | */ | |
1119 | if (old_select || new_select) | |
9bcb3eef | 1120 | bgp_bump_version(dest); |
d62a17ae | 1121 | |
1122 | if (old_select) | |
9bcb3eef | 1123 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1124 | if (new_select) { |
9bcb3eef DS |
1125 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1126 | bgp_path_info_unset_flag(dest, new_select, | |
1127 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1128 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1129 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1130 | } |
1131 | ||
9c7edc03 AK |
1132 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1133 | * to zebra | |
1134 | */ | |
d62a17ae | 1135 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1136 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1137 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1138 | ret = evpn_zebra_install( |
9bcb3eef DS |
1139 | bgp, vpn, |
1140 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1141 | new_select); |
d594a14c | 1142 | |
d62a17ae | 1143 | /* If an old best existed and it was a "local" route, the only |
1144 | * reason | |
1145 | * it would be supplanted is due to MAC mobility procedures. So, | |
1146 | * we | |
1147 | * need to do an implicit delete and withdraw that route from | |
1148 | * peers. | |
1149 | */ | |
9c7edc03 AK |
1150 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1151 | old_select && old_select->peer == bgp->peer_self | |
1152 | && old_select->type == ZEBRA_ROUTE_BGP | |
1153 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1154 | && vpn) | |
1155 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1156 | old_select, new_select); | |
d62a17ae | 1157 | } else { |
1158 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1159 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1160 | ret = evpn_zebra_uninstall( |
1161 | bgp, vpn, | |
9bcb3eef DS |
1162 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1163 | dest), | |
b54892e0 | 1164 | old_select->attr->nexthop); |
d62a17ae | 1165 | } |
1166 | ||
1167 | /* Clear any route change flags. */ | |
9bcb3eef | 1168 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1169 | |
18ee8310 | 1170 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1171 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1172 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1173 | |
1174 | return ret; | |
128ea8ab | 1175 | } |
1176 | ||
9c7edc03 AK |
1177 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1178 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1179 | { |
40381db7 | 1180 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1181 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1182 | |
9bcb3eef | 1183 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1184 | tmp_pi = tmp_pi->next) { |
1185 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1186 | local_pi = tmp_pi; |
9c7edc03 AK |
1187 | break; |
1188 | } | |
d62a17ae | 1189 | } |
c85c03c7 | 1190 | |
9c7edc03 | 1191 | return local_pi; |
c85c03c7 | 1192 | } |
1193 | ||
5e53dce3 | 1194 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1195 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1196 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1197 | struct attr *attr, int *route_changed) |
342dd0c6 | 1198 | { |
1199 | struct attr *attr_new = NULL; | |
40381db7 | 1200 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1201 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1202 | struct bgp_path_info *local_pi = NULL; |
1203 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1204 | |
5424b7ba | 1205 | *route_changed = 0; |
342dd0c6 | 1206 | /* locate the local route entry if any */ |
9bcb3eef | 1207 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1208 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1209 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1210 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1211 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1212 | local_pi = tmp_pi; | |
342dd0c6 | 1213 | } |
1214 | ||
2bb9eff4 | 1215 | /* |
0437e105 | 1216 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1217 | * Otherwise see if route attr has changed |
523cafc4 | 1218 | */ |
40381db7 | 1219 | if (!local_pi) { |
342dd0c6 | 1220 | |
5424b7ba MK |
1221 | /* route has changed as this is the first entry */ |
1222 | *route_changed = 1; | |
1223 | ||
342dd0c6 | 1224 | /* Add (or update) attribute to hash. */ |
1225 | attr_new = bgp_attr_intern(attr); | |
1226 | ||
1227 | /* create the route info from attribute */ | |
40381db7 | 1228 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1229 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1230 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1231 | |
b57ba6d2 | 1232 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1233 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1234 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1235 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1236 | pi->extra->num_labels = 1; | |
342dd0c6 | 1237 | |
1238 | /* add the route entry to route node*/ | |
9bcb3eef | 1239 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1240 | } else { |
1241 | ||
40381db7 DS |
1242 | tmp_pi = local_pi; |
1243 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1244 | |
1245 | /* attribute changed */ | |
1246 | *route_changed = 1; | |
1247 | ||
342dd0c6 | 1248 | /* The attribute has changed. */ |
1249 | /* Add (or update) attribute to hash. */ | |
1250 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1251 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1252 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1253 | |
1254 | /* Restore route, if needed. */ | |
40381db7 | 1255 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1256 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1257 | |
1258 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1259 | bgp_attr_unintern(&tmp_pi->attr); |
1260 | tmp_pi->attr = attr_new; | |
1261 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1262 | } |
1263 | } | |
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1268 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1269 | struct attr *src_attr) | |
342dd0c6 | 1270 | { |
1271 | afi_t afi = AFI_L2VPN; | |
1272 | safi_t safi = SAFI_EVPN; | |
1273 | struct attr attr; | |
9bcb3eef | 1274 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1275 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1276 | int route_changed = 0; |
342dd0c6 | 1277 | |
5e53dce3 T |
1278 | bgp_evpn = bgp_get_evpn(); |
1279 | if (!bgp_evpn) | |
faafdfa8 | 1280 | return 0; |
342dd0c6 | 1281 | |
2f69f6d3 | 1282 | /* Build path attribute for this route - use the source attr, if |
1283 | * present, else treat as locally originated. | |
1284 | */ | |
1285 | if (src_attr) | |
6f4f49b2 | 1286 | attr = *src_attr; |
2f69f6d3 | 1287 | else { |
1288 | memset(&attr, 0, sizeof(struct attr)); | |
1289 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1290 | } | |
5394a276 | 1291 | |
5394a276 CS |
1292 | /* Advertise Primary IP (PIP) is enabled, send individual |
1293 | * IP (default instance router-id) as nexthop. | |
1294 | * PIP is disabled or vrr interface is not present | |
27727001 | 1295 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1296 | */ |
1297 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1298 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1299 | attr.nexthop = bgp_vrf->originator_ip; | |
1300 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1301 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1302 | } else { |
27727001 CS |
1303 | /* copy sys rmac */ |
1304 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1305 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1306 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1307 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1308 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1309 | if (bgp_debug_zebra(NULL)) |
1310 | zlog_debug( | |
1311 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1312 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1313 | } |
1314 | ||
c0d72166 DS |
1315 | if (bgp_debug_zebra(NULL)) |
1316 | zlog_debug( | |
1317 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1318 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1319 | &attr.nexthop); | |
5394a276 | 1320 | |
342dd0c6 | 1321 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1322 | |
1323 | /* Setup RT and encap extended community */ | |
1324 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1325 | ||
1326 | /* get the route node in global table */ | |
c44ab6f1 AK |
1327 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1328 | (const struct prefix_evpn *)evp, | |
1329 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1330 | assert(dest); |
342dd0c6 | 1331 | |
1332 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1333 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1334 | &route_changed); |
342dd0c6 | 1335 | |
1336 | /* schedule for processing and unlock node */ | |
5424b7ba | 1337 | if (route_changed) { |
9bcb3eef DS |
1338 | bgp_process(bgp_evpn, dest, afi, safi); |
1339 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1340 | } |
342dd0c6 | 1341 | |
1342 | /* uninten temporary */ | |
5ee65f6f | 1343 | if (!src_attr) |
1344 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1345 | return 0; |
1346 | } | |
1347 | ||
9c7edc03 | 1348 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1349 | struct bgp_dest *dest, uint32_t loc_seq, |
1350 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1351 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1352 | { |
1353 | struct bgp_path_info *tmp_pi; | |
1354 | struct bgp_path_info *second_best_path = NULL; | |
1355 | uint32_t tmp_mm_seq = 0; | |
1356 | esi_t *tmp_esi; | |
1357 | int paths_eq; | |
1358 | ||
1359 | /* find the best non-local path. a local path can only be present | |
1360 | * as best path | |
1361 | */ | |
09319b4e DS |
1362 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1363 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1364 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1365 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1366 | continue; | |
1367 | ||
1368 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1369 | second_best_path, &paths_eq)) | |
1370 | second_best_path = tmp_pi; | |
1371 | } | |
1372 | ||
1373 | if (!second_best_path) | |
1374 | return; | |
1375 | ||
1376 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1377 | /* if this has the same ES desination as the local path | |
1378 | * it is a sync path | |
1379 | */ | |
1380 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1381 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1382 | if (tmp_mm_seq < loc_seq) | |
1383 | return; | |
1384 | ||
1385 | /* we have a non-proxy path from the ES peer. */ | |
1386 | if (second_best_path->attr->es_flags & | |
1387 | ATTR_ES_PROXY_ADVERT) { | |
1388 | *proxy_from_peer = true; | |
1389 | } else { | |
1390 | *active_on_peer = true; | |
1391 | } | |
1392 | ||
1393 | if (second_best_path->attr->router_flag) | |
1394 | *peer_router = true; | |
1395 | ||
1396 | /* we use both proxy and non-proxy imports to | |
1397 | * determine the max sync sequence | |
1398 | */ | |
1399 | if (tmp_mm_seq > *max_sync_seq) | |
1400 | *max_sync_seq = tmp_mm_seq; | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1405 | * This is need for MM sequence number syncing and proxy advertisement. | |
1406 | * Note: The local path can only exist as a best path in the | |
1407 | * VPN route table. It will take precedence over all sync paths. | |
1408 | */ | |
1409 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1410 | struct bgp_dest *dest, |
1411 | struct attr *attr, | |
1412 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1413 | { |
1414 | esi_t *esi; | |
752eed47 DS |
1415 | struct prefix_evpn *evp = |
1416 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1417 | |
1418 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1419 | return; | |
1420 | ||
1421 | esi = bgp_evpn_attr_get_esi(attr); | |
1422 | if (bgp_evpn_is_esi_valid(esi)) { | |
1423 | if (setup_sync) { | |
1424 | uint32_t max_sync_seq = 0; | |
1425 | bool active_on_peer = false; | |
1426 | bool peer_router = false; | |
1427 | bool proxy_from_peer = false; | |
1428 | ||
09319b4e DS |
1429 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1430 | &max_sync_seq, &active_on_peer, | |
1431 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1432 | attr->mm_sync_seqnum = max_sync_seq; |
1433 | if (active_on_peer) | |
1434 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1435 | else | |
1436 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1437 | if (proxy_from_peer) | |
1438 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1439 | else | |
1440 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1441 | if (peer_router) | |
1442 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1443 | else | |
1444 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1445 | ||
1446 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1447 | char esi_buf[ESI_STR_LEN]; |
1448 | ||
2dbe669b DA |
1449 | zlog_debug( |
1450 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1451 | evp, | |
9c7edc03 | 1452 | esi_to_str(esi, esi_buf, |
2dbe669b | 1453 | sizeof(esi_buf)), |
9c7edc03 | 1454 | max_sync_seq, |
2dbe669b DA |
1455 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1456 | ? "peer-active " | |
1457 | : "", | |
1458 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1459 | ? "peer-proxy " | |
1460 | : "", | |
1461 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1462 | ? "peer-router " | |
1463 | : ""); | |
9c7edc03 AK |
1464 | } |
1465 | } | |
1466 | } else { | |
1467 | attr->mm_sync_seqnum = 0; | |
1468 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1469 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1470 | } | |
1471 | } | |
1472 | ||
128ea8ab | 1473 | /* |
1474 | * Create or update EVPN route entry. This could be in the VNI route table | |
1475 | * or the global route table. | |
1476 | */ | |
d62a17ae | 1477 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1478 | afi_t afi, safi_t safi, |
1479 | struct bgp_dest *dest, struct attr *attr, | |
1480 | int add, struct bgp_path_info **pi, | |
1481 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1482 | bool *old_is_sync) |
d62a17ae | 1483 | { |
40381db7 DS |
1484 | struct bgp_path_info *tmp_pi; |
1485 | struct bgp_path_info *local_pi; | |
d62a17ae | 1486 | struct attr *attr_new; |
b57ba6d2 | 1487 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1488 | uint32_t num_labels = 1; |
d62a17ae | 1489 | int route_change = 1; |
d7c0a89a | 1490 | uint8_t sticky = 0; |
b54892e0 | 1491 | const struct prefix_evpn *evp; |
d62a17ae | 1492 | |
40381db7 | 1493 | *pi = NULL; |
9bcb3eef | 1494 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1495 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1496 | |
f07e1c99 | 1497 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1498 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1499 | |
1500 | /* If route doesn't exist already, create a new one, if told to. | |
1501 | * Otherwise act based on whether the attributes of the route have | |
1502 | * changed or not. | |
1503 | */ | |
40381db7 | 1504 | if (!local_pi && !add) |
d62a17ae | 1505 | return 0; |
1506 | ||
9c7edc03 AK |
1507 | if (old_is_sync && local_pi) |
1508 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1509 | ||
1510 | /* if a local path is being added with a non-zero esi look | |
1511 | * for SYNC paths from ES peers and bubble up the sync-info | |
1512 | */ | |
26c03e43 | 1513 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1514 | |
f07e1c99 | 1515 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1516 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1517 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1518 | |
40381db7 | 1519 | if (!local_pi) { |
d62a17ae | 1520 | /* Add (or update) attribute to hash. */ |
1521 | attr_new = bgp_attr_intern(attr); | |
1522 | ||
1523 | /* Extract MAC mobility sequence number, if any. */ | |
1524 | attr_new->mm_seqnum = | |
1525 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1526 | attr_new->sticky = sticky; | |
1527 | ||
1528 | /* Create new route with its attribute. */ | |
40381db7 | 1529 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1530 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1531 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1532 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1533 | |
1534 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1535 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1536 | |
1537 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1538 | * Only attach second label if we are advertising two labels for | |
1539 | * type-2 routes. | |
1540 | */ | |
996c9314 LB |
1541 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1542 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1543 | vni_t l3vni; |
1544 | ||
1545 | l3vni = bgpevpn_get_l3vni(vpn); | |
1546 | if (l3vni) { | |
1547 | vni2label(l3vni, &label[1]); | |
1548 | num_labels++; | |
1549 | } | |
1550 | } | |
d62a17ae | 1551 | |
40381db7 DS |
1552 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1553 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1554 | /* Mark route as self type-2 route */ |
1555 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1556 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1557 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1558 | } else { |
40381db7 DS |
1559 | tmp_pi = local_pi; |
1560 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1561 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1562 | route_change = 0; |
1563 | else { | |
c48d9f5f MK |
1564 | /* |
1565 | * The attributes have changed, type-2 routes needs to | |
1566 | * be advertised with right labels. | |
1567 | */ | |
1568 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1569 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1570 | && CHECK_FLAG(vpn->flags, | |
1571 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1572 | vni_t l3vni; |
1573 | ||
1574 | l3vni = bgpevpn_get_l3vni(vpn); | |
1575 | if (l3vni) { | |
1576 | vni2label(l3vni, &label[1]); | |
1577 | num_labels++; | |
1578 | } | |
1579 | } | |
40381db7 DS |
1580 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1581 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1582 | |
d62a17ae | 1583 | /* The attribute has changed. */ |
1584 | /* Add (or update) attribute to hash. */ | |
1585 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1586 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1587 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1588 | |
f07e1c99 | 1589 | /* Extract MAC mobility sequence number, if any. */ |
1590 | attr_new->mm_seqnum = | |
1591 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1592 | attr_new->sticky = sticky; | |
1593 | ||
d62a17ae | 1594 | /* Restore route, if needed. */ |
40381db7 | 1595 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1596 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1597 | |
1598 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1599 | bgp_attr_unintern(&tmp_pi->attr); |
1600 | tmp_pi->attr = attr_new; | |
1601 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1602 | } |
1603 | } | |
1604 | ||
26c03e43 AK |
1605 | /* MAC-IP routes in the VNI route table are linked to the |
1606 | * destination ES | |
1607 | */ | |
1608 | if (route_change && vpn_rt | |
1609 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1610 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1611 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1612 | ||
d62a17ae | 1613 | /* Return back the route entry. */ |
40381db7 | 1614 | *pi = tmp_pi; |
d62a17ae | 1615 | return route_change; |
128ea8ab | 1616 | } |
1617 | ||
ec0ab544 | 1618 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1619 | struct bgpevpn *vpn, |
1620 | struct bgp_dest *dest) | |
ec0ab544 AK |
1621 | { |
1622 | struct bgp_path_info *tmp_ri; | |
1623 | struct bgp_path_info *curr_select = NULL; | |
1624 | ||
9bcb3eef DS |
1625 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1626 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1627 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1628 | curr_select = tmp_ri; | |
1629 | break; | |
1630 | } | |
1631 | } | |
1632 | ||
1633 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1634 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1635 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1636 | evpn_zebra_install(bgp, vpn, | |
1637 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1638 | curr_select); | |
ec0ab544 AK |
1639 | } |
1640 | ||
6d8c603a AK |
1641 | /* |
1642 | * If the local route was not selected evict it and tell zebra to re-add | |
1643 | * the best remote dest. | |
1644 | * | |
1645 | * Typically a local path added by zebra is expected to be selected as | |
1646 | * best. In which case when a remote path wins as best (later) | |
1647 | * evpn_route_select_install itself evicts the older-local-best path. | |
1648 | * | |
1649 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1650 | * is possible that the local path is no longer the "older" best path. | |
1651 | * It is a path that was never designated as best and hence requires | |
1652 | * additional handling to prevent bgp from injecting and holding on to a | |
1653 | * non-best local path. | |
1654 | */ | |
1655 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1656 | struct bgpevpn *vpn, | |
9bcb3eef | 1657 | struct bgp_dest *dest, |
9a8897aa | 1658 | struct bgp_path_info *local_pi) |
6d8c603a | 1659 | { |
6d8c603a | 1660 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1661 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1662 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1663 | dest); |
b54892e0 | 1664 | |
9c7edc03 | 1665 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1666 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1667 | |
1668 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1669 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1670 | } |
1671 | ||
128ea8ab | 1672 | /* |
1673 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1674 | * and schedule for processing. | |
1675 | */ | |
d62a17ae | 1676 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1677 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1678 | uint32_t seq, esi_t *esi) |
128ea8ab | 1679 | { |
9bcb3eef | 1680 | struct bgp_dest *dest; |
d62a17ae | 1681 | struct attr attr; |
1682 | struct attr *attr_new; | |
1ec31309 | 1683 | int add_l3_ecomm = 0; |
40381db7 | 1684 | struct bgp_path_info *pi; |
d62a17ae | 1685 | afi_t afi = AFI_L2VPN; |
1686 | safi_t safi = SAFI_EVPN; | |
1687 | int route_change; | |
9c7edc03 | 1688 | bool old_is_sync = false; |
128ea8ab | 1689 | |
d62a17ae | 1690 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1691 | |
d62a17ae | 1692 | /* Build path-attribute for this route. */ |
1693 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1694 | attr.nexthop = vpn->originator_ip; | |
1695 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1696 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1697 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1698 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1699 | attr.router_flag = CHECK_FLAG(flags, |
1700 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1701 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1702 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1703 | ||
1704 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1705 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1706 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1707 | } | |
1708 | ||
be41eb68 | 1709 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1710 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1711 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1712 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1713 | } |
be41eb68 | 1714 | |
9c7edc03 | 1715 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
1716 | char buf3[ESI_STR_LEN]; |
1717 | ||
23d0a753 | 1718 | zlog_debug( |
c0d72166 | 1719 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
1720 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1721 | : " ", | |
c0d72166 | 1722 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 1723 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 1724 | } |
1ec31309 | 1725 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1726 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1727 | uint8_t af_flags = 0; | |
1728 | ||
1729 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1730 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1731 | ||
1732 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1733 | } |
1734 | ||
a21bd7a3 | 1735 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1736 | |
1ec31309 | 1737 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1738 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1739 | * these routes. | |
1740 | */ | |
1741 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1742 | (is_evpn_prefix_ipaddr_v4(p) || |
1743 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1744 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1745 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1746 | add_l3_ecomm = 1; |
1747 | ||
1748 | /* Set up extended community. */ | |
1749 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1750 | |
d62a17ae | 1751 | /* First, create (or fetch) route node within the VNI. */ |
1752 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1753 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1754 | |
d62a17ae | 1755 | /* Create or update route entry. */ |
9bcb3eef | 1756 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1757 | 1, &pi, flags, seq, |
1758 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1759 | assert(pi); |
1760 | attr_new = pi->attr; | |
128ea8ab | 1761 | |
6d8c603a AK |
1762 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1763 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1764 | |
1765 | /* Perform route selection. Normally, the local route in the | |
1766 | * VNI is expected to win and be the best route. However, if | |
1767 | * there is a race condition where a host moved from local to | |
1768 | * remote and the remote route was received in BGP just prior | |
1769 | * to the local MACIP notification from zebra, the remote | |
1770 | * route would win, and we should evict the defunct local route | |
1771 | * and (re)install the remote route into zebra. | |
1772 | */ | |
9bcb3eef | 1773 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1774 | /* |
9a8897aa AK |
1775 | * If the new local route was not selected evict it and tell zebra |
1776 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1777 | * routes. | |
6d8c603a | 1778 | */ |
9c7edc03 | 1779 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1780 | route_change = 0; |
9c7edc03 AK |
1781 | } else { |
1782 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1783 | route_change = 0; | |
1784 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1785 | } else { | |
1786 | bool new_is_sync; | |
1787 | ||
1788 | /* If the local path already existed and is still the | |
1789 | * best path we need to also check if it transitioned | |
1790 | * from being a sync path to a non-sync path. If it | |
1791 | * it did we need to notify zebra that the sync-path | |
1792 | * has been removed. | |
1793 | */ | |
1794 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1795 | if (!new_is_sync && old_is_sync) | |
1796 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1797 | } | |
9a8897aa | 1798 | } |
6d8c603a AK |
1799 | bgp_path_info_unlock(pi); |
1800 | ||
9bcb3eef | 1801 | bgp_dest_unlock_node(dest); |
128ea8ab | 1802 | |
d62a17ae | 1803 | /* If this is a new route or some attribute has changed, export the |
1804 | * route to the global table. The route will be advertised to peers | |
1805 | * from there. Note that this table is a 2-level tree (RD-level + | |
1806 | * Prefix-level) similar to L3VPN routes. | |
1807 | */ | |
1808 | if (route_change) { | |
40381db7 | 1809 | struct bgp_path_info *global_pi; |
128ea8ab | 1810 | |
c44ab6f1 AK |
1811 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1812 | (const struct prefix_evpn *)p, | |
1813 | &vpn->prd); | |
9bcb3eef | 1814 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1815 | &global_pi, flags, seq, |
1816 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1817 | |
d62a17ae | 1818 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1819 | bgp_process(bgp, dest, afi, safi); |
1820 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1821 | } |
128ea8ab | 1822 | |
d62a17ae | 1823 | /* Unintern temporary. */ |
1824 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1825 | |
d62a17ae | 1826 | return 0; |
128ea8ab | 1827 | } |
1828 | ||
50f74cf1 | 1829 | /* |
1830 | * Delete EVPN route entry. | |
1831 | * The entry can be in ESI/VNI table or the global table. | |
1832 | */ | |
185fb14a | 1833 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1834 | struct bgp_dest *dest, |
40381db7 | 1835 | struct bgp_path_info **pi) |
342dd0c6 | 1836 | { |
40381db7 | 1837 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1838 | |
40381db7 | 1839 | *pi = NULL; |
342dd0c6 | 1840 | |
50f74cf1 | 1841 | /* Now, find matching route. */ |
9bcb3eef | 1842 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1843 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1844 | if (tmp_pi->peer == bgp->peer_self |
1845 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1846 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1847 | break; |
1848 | ||
40381db7 | 1849 | *pi = tmp_pi; |
342dd0c6 | 1850 | |
1851 | /* Mark route for delete. */ | |
40381db7 | 1852 | if (tmp_pi) |
9bcb3eef | 1853 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1854 | } |
1855 | ||
1856 | /* Delete EVPN type5 route */ | |
996c9314 | 1857 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1858 | { |
1859 | afi_t afi = AFI_L2VPN; | |
1860 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1861 | struct bgp_dest *dest = NULL; |
40381db7 | 1862 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1863 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1864 | |
5e53dce3 T |
1865 | bgp_evpn = bgp_get_evpn(); |
1866 | if (!bgp_evpn) | |
faafdfa8 | 1867 | return 0; |
342dd0c6 | 1868 | |
1869 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1870 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1871 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1872 | if (!dest) |
342dd0c6 | 1873 | return 0; |
1874 | ||
9bcb3eef | 1875 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1876 | if (pi) |
9bcb3eef DS |
1877 | bgp_process(bgp_evpn, dest, afi, safi); |
1878 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1879 | return 0; |
1880 | } | |
1881 | ||
128ea8ab | 1882 | /* |
1883 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1884 | * schedule for processing. | |
1885 | */ | |
d62a17ae | 1886 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1887 | struct prefix_evpn *p) | |
1888 | { | |
9bcb3eef | 1889 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1890 | struct bgp_path_info *pi; |
d62a17ae | 1891 | afi_t afi = AFI_L2VPN; |
1892 | safi_t safi = SAFI_EVPN; | |
1893 | ||
1894 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1895 | * there | |
1896 | * is nothing further to do. | |
1897 | */ | |
1898 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1899 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1900 | if (!dest) | |
d62a17ae | 1901 | return 0; |
1902 | ||
1903 | /* Next, locate route node in the global EVPN routing table. Note that | |
1904 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1905 | * L3VPN routes. | |
1906 | */ | |
c44ab6f1 AK |
1907 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1908 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1909 | if (global_dest) { |
d62a17ae | 1910 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1911 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1912 | |
1913 | /* Schedule for processing - withdraws to peers happen from | |
1914 | * this table. | |
1915 | */ | |
40381db7 | 1916 | if (pi) |
9bcb3eef DS |
1917 | bgp_process(bgp, global_dest, afi, safi); |
1918 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1919 | } |
1920 | ||
1921 | /* Delete route entry in the VNI route table. This can just be removed. | |
1922 | */ | |
9bcb3eef | 1923 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1924 | if (pi) { |
9bcb3eef DS |
1925 | bgp_path_info_reap(dest, pi); |
1926 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1927 | } |
9bcb3eef | 1928 | bgp_dest_unlock_node(dest); |
d62a17ae | 1929 | |
1930 | return 0; | |
128ea8ab | 1931 | } |
1932 | ||
9c7edc03 | 1933 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
09319b4e DS |
1934 | struct bgpevpn *vpn, |
1935 | struct bgp_dest *dest, | |
1936 | struct bgp_path_info *local_pi, | |
1937 | const char *caller) | |
9c7edc03 AK |
1938 | { |
1939 | afi_t afi = AFI_L2VPN; | |
1940 | safi_t safi = SAFI_EVPN; | |
1941 | struct bgp_path_info *pi; | |
1942 | struct attr attr; | |
1943 | struct attr *attr_new; | |
1944 | uint32_t seq; | |
1945 | int add_l3_ecomm = 0; | |
09319b4e | 1946 | struct bgp_dest *global_dest; |
9c7edc03 | 1947 | struct bgp_path_info *global_pi; |
752eed47 DS |
1948 | struct prefix_evpn *evp = |
1949 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1950 | int route_change; |
1951 | bool old_is_sync = false; | |
1952 | ||
1953 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1954 | return; | |
1955 | ||
1956 | /* | |
1957 | * Build attribute per local route as the MAC mobility and | |
1958 | * some other values could differ for different routes. The | |
1959 | * attributes will be shared in the hash table. | |
1960 | */ | |
1961 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1962 | attr.nexthop = vpn->originator_ip; | |
1963 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1964 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1965 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
1966 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
1967 | attr.es_flags = local_pi->attr->es_flags; | |
1968 | if (local_pi->attr->default_gw) { | |
1969 | attr.default_gw = 1; | |
1970 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1971 | attr.router_flag = 1; | |
1972 | } | |
1973 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
1974 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
1975 | local_pi->extra->af_flags); | |
1976 | vni2label(vpn->vni, &(attr.label)); | |
1977 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1978 | * using L3 VNI for type-2 routes also. | |
1979 | */ | |
1980 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
1981 | !IN6_IS_ADDR_LINKLOCAL( | |
1982 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
1983 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && | |
1984 | bgpevpn_get_l3vni(vpn)) | |
1985 | add_l3_ecomm = 1; | |
1986 | ||
1987 | /* Set up extended community. */ | |
1988 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1989 | seq = mac_mobility_seqnum(local_pi->attr); | |
1990 | ||
1991 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
1992 | char buf3[ESI_STR_LEN]; |
1993 | ||
23d0a753 | 1994 | zlog_debug( |
c0d72166 | 1995 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
1996 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1997 | : " ", | |
c0d72166 | 1998 | vpn->vni, evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
1999 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2000 | attr.es_flags, caller); | |
9c7edc03 AK |
2001 | } |
2002 | ||
2003 | /* Update the route entry. */ | |
09319b4e DS |
2004 | route_change = update_evpn_route_entry( |
2005 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2006 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2007 | |
2008 | assert(pi); | |
2009 | attr_new = pi->attr; | |
2010 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2011 | bgp_path_info_lock(pi); | |
2012 | ||
2013 | /* Perform route selection. Normally, the local route in the | |
2014 | * VNI is expected to win and be the best route. However, | |
2015 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2016 | * that causes best selection to be based on next hop), a | |
2017 | * remote route could win. If the local route is the best, | |
2018 | * ensure it is updated in the global EVPN route table and | |
2019 | * advertised to peers; otherwise, ensure it is evicted and | |
2020 | * (re)install the remote route into zebra. | |
2021 | */ | |
09319b4e | 2022 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2023 | |
2024 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2025 | route_change = 0; | |
2026 | } else { | |
2027 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2028 | route_change = 0; | |
09319b4e | 2029 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2030 | } else { |
2031 | bool new_is_sync; | |
2032 | ||
2033 | /* If the local path already existed and is still the | |
2034 | * best path we need to also check if it transitioned | |
2035 | * from being a sync path to a non-sync path. If it | |
2036 | * it did we need to notify zebra that the sync-path | |
2037 | * has been removed. | |
2038 | */ | |
2039 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2040 | if (!new_is_sync && old_is_sync) | |
2041 | evpn_zebra_uninstall(bgp, vpn, | |
2042 | evp, zero_vtep_ip); | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | ||
2047 | /* unlock pi */ | |
2048 | bgp_path_info_unlock(pi); | |
2049 | ||
2050 | if (route_change) { | |
2051 | /* Update route in global routing table. */ | |
09319b4e DS |
2052 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2053 | safi, evp, &vpn->prd); | |
2054 | assert(global_dest); | |
2055 | update_evpn_route_entry( | |
2056 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2057 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2058 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2059 | |
2060 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2061 | bgp_process(bgp, global_dest, afi, safi); |
2062 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2063 | } |
2064 | ||
2065 | /* Unintern temporary. */ | |
2066 | aspath_unintern(&attr.aspath); | |
2067 | } | |
2068 | ||
128ea8ab | 2069 | /* |
2070 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2071 | * be scheduled for advertise to peers. | |
2072 | */ | |
d62a17ae | 2073 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2074 | { | |
9bcb3eef | 2075 | struct bgp_dest *dest; |
9c7edc03 | 2076 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2077 | |
2078 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2079 | * routes updated, update corresponding entry in the global table too. | |
2080 | */ | |
9bcb3eef | 2081 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2082 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2083 | const struct prefix_evpn *evp = |
2084 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2085 | |
2086 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2087 | continue; | |
2088 | ||
f07e1c99 | 2089 | /* Identify local route. */ |
9bcb3eef | 2090 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2091 | tmp_pi = tmp_pi->next) { |
40381db7 | 2092 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2093 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2094 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2095 | break; |
7ec156a9 | 2096 | } |
d62a17ae | 2097 | |
40381db7 | 2098 | if (!tmp_pi) |
d62a17ae | 2099 | continue; |
2100 | ||
9c7edc03 AK |
2101 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2102 | __func__); | |
f07e1c99 | 2103 | } |
d62a17ae | 2104 | |
2105 | return 0; | |
128ea8ab | 2106 | } |
2107 | ||
2108 | /* | |
2109 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2110 | * global routing table. These are also scheduled for withdraw from peers. | |
2111 | */ | |
d62a17ae | 2112 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2113 | { |
d62a17ae | 2114 | afi_t afi; |
2115 | safi_t safi; | |
9bcb3eef | 2116 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2117 | struct bgp_table *table; |
40381db7 | 2118 | struct bgp_path_info *pi; |
128ea8ab | 2119 | |
d62a17ae | 2120 | afi = AFI_L2VPN; |
2121 | safi = SAFI_EVPN; | |
128ea8ab | 2122 | |
9bcb3eef DS |
2123 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2124 | (struct prefix *)&vpn->prd); | |
2125 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2126 | table = bgp_dest_get_bgp_table_info(rddest); | |
2127 | for (dest = bgp_table_top(table); dest; | |
2128 | dest = bgp_route_next(dest)) { | |
2129 | const struct prefix_evpn *evp = | |
2130 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2131 | dest); | |
128ea8ab | 2132 | |
d62a17ae | 2133 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2134 | continue; | |
128ea8ab | 2135 | |
9bcb3eef | 2136 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2137 | if (pi) |
9bcb3eef | 2138 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2139 | } |
2140 | } | |
128ea8ab | 2141 | |
d62a17ae | 2142 | /* Unlock RD node. */ |
9bcb3eef DS |
2143 | if (rddest) |
2144 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2145 | |
d62a17ae | 2146 | return 0; |
128ea8ab | 2147 | } |
2148 | ||
2149 | /* | |
2150 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2151 | * table as well as the per-VNI route table. | |
2152 | */ | |
d62a17ae | 2153 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2154 | { |
d62a17ae | 2155 | afi_t afi; |
2156 | safi_t safi; | |
9bcb3eef | 2157 | struct bgp_dest *dest; |
40381db7 | 2158 | struct bgp_path_info *pi; |
128ea8ab | 2159 | |
d62a17ae | 2160 | afi = AFI_L2VPN; |
2161 | safi = SAFI_EVPN; | |
128ea8ab | 2162 | |
d62a17ae | 2163 | /* First, walk the global route table for this VNI's type-2 local |
2164 | * routes. | |
2165 | * EVPN routes are a 2-level table, first get the RD table. | |
2166 | */ | |
2167 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2168 | |
d62a17ae | 2169 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2170 | for (dest = bgp_table_top(vpn->route_table); dest; |
2171 | dest = bgp_route_next(dest)) { | |
2172 | const struct prefix_evpn *evp = | |
2173 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2174 | |
d62a17ae | 2175 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2176 | continue; | |
128ea8ab | 2177 | |
9bcb3eef | 2178 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2179 | |
d62a17ae | 2180 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2181 | if (pi) |
9bcb3eef | 2182 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2183 | } |
128ea8ab | 2184 | |
d62a17ae | 2185 | return 0; |
128ea8ab | 2186 | } |
2187 | ||
2188 | /* | |
2189 | * Delete all routes in the per-VNI route table. | |
2190 | */ | |
d62a17ae | 2191 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2192 | { |
9bcb3eef | 2193 | struct bgp_dest *dest; |
40381db7 | 2194 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2195 | |
d62a17ae | 2196 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2197 | for (dest = bgp_table_top(vpn->route_table); dest; |
2198 | dest = bgp_route_next(dest)) { | |
2199 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2200 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2201 | bgp_path_info_delete(dest, pi); |
2202 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2203 | } |
2204 | } | |
128ea8ab | 2205 | |
d62a17ae | 2206 | return 0; |
128ea8ab | 2207 | } |
2208 | ||
833b8a50 AK |
2209 | /* BUM traffic flood mode per-l2-vni */ |
2210 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2211 | struct bgpevpn *vpn) | |
2212 | { | |
2213 | /* if flooding has been globally disabled per-vni mode is | |
2214 | * not relevant | |
2215 | */ | |
2216 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2217 | return VXLAN_FLOOD_DISABLED; | |
2218 | ||
2219 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2220 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2221 | return VXLAN_FLOOD_PIM_SM; | |
2222 | ||
2223 | /* default is ingress replication */ | |
2224 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2225 | } | |
2226 | ||
128ea8ab | 2227 | /* |
2228 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2229 | * export RT getting modified or change to tunnel IP. Note that these | |
2230 | * situations need the route in the per-VNI table as well as the global | |
2231 | * table to be updated (as attributes change). | |
2232 | */ | |
0ca10580 | 2233 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2234 | { |
d62a17ae | 2235 | int ret; |
2236 | struct prefix_evpn p; | |
128ea8ab | 2237 | |
d62a17ae | 2238 | /* Update and advertise the type-3 route (only one) followed by the |
2239 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2240 | * |
2241 | * RT-3 only if doing head-end replication | |
d62a17ae | 2242 | */ |
833b8a50 AK |
2243 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2244 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2245 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2246 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2247 | if (ret) |
2248 | return ret; | |
2249 | } | |
128ea8ab | 2250 | |
d62a17ae | 2251 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2252 | } |
2253 | ||
2254 | /* | |
2255 | * Delete (and withdraw) local routes for specified VNI from the global | |
2256 | * table and per-VNI table. After this, remove all other routes from | |
2257 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2258 | * (advertise-all-vni) being disabled. | |
2259 | */ | |
d62a17ae | 2260 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2261 | { |
d62a17ae | 2262 | int ret; |
2263 | struct prefix_evpn p; | |
128ea8ab | 2264 | |
d62a17ae | 2265 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2266 | * followed by type-3 routes (only one) - for this VNI. | |
2267 | */ | |
2268 | ret = delete_all_type2_routes(bgp, vpn); | |
2269 | if (ret) | |
2270 | return ret; | |
128ea8ab | 2271 | |
d62a17ae | 2272 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2273 | ret = delete_evpn_route(bgp, vpn, &p); | |
2274 | if (ret) | |
2275 | return ret; | |
128ea8ab | 2276 | |
d62a17ae | 2277 | /* Delete all routes from the per-VNI table. */ |
2278 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2279 | } |
2280 | ||
76d07c7a AK |
2281 | /* |
2282 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2283 | * remove the type-3 route if any. A new type-3 route will be generated | |
2284 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2285 | */ | |
2286 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2287 | struct in_addr mcast_grp) | |
2288 | { | |
2289 | struct prefix_evpn p; | |
2290 | ||
2291 | vpn->mcast_grp = mcast_grp; | |
2292 | ||
2293 | if (is_vni_live(vpn)) { | |
2294 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2295 | delete_evpn_route(bgp, vpn, &p); | |
2296 | } | |
2297 | ||
2298 | return 0; | |
2299 | } | |
2300 | ||
128ea8ab | 2301 | /* |
d1911c26 | 2302 | * There is a tunnel endpoint IP address change for this VNI, delete |
2303 | * prior type-3 route (if needed) and update. | |
2304 | * Note: Route re-advertisement happens elsewhere after other processing | |
2305 | * other changes. | |
128ea8ab | 2306 | */ |
d62a17ae | 2307 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2308 | struct in_addr originator_ip) | |
128ea8ab | 2309 | { |
d62a17ae | 2310 | struct prefix_evpn p; |
128ea8ab | 2311 | |
ddd16ed5 MK |
2312 | /* If VNI is not live, we only need to update the originator ip */ |
2313 | if (!is_vni_live(vpn)) { | |
2314 | vpn->originator_ip = originator_ip; | |
2315 | return 0; | |
2316 | } | |
2317 | ||
db0e1937 MK |
2318 | /* Update the tunnel-ip hash */ |
2319 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2320 | bgp_tip_add(bgp, &originator_ip); | |
2321 | ||
2322 | /* filter routes as martian nexthop db has changed */ | |
2323 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2324 | ||
d62a17ae | 2325 | /* Need to withdraw type-3 route as the originator IP is part |
2326 | * of the key. | |
2327 | */ | |
2328 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2329 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2330 | |
d62a17ae | 2331 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2332 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2333 | return 0; |
185fb14a | 2334 | } |
50f74cf1 | 2335 | |
185fb14a AK |
2336 | static struct bgp_path_info * |
2337 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2338 | struct bgp_dest *dest, struct attr *attr) | |
2339 | { | |
2340 | struct attr *attr_new; | |
2341 | struct bgp_path_info *pi; | |
50f74cf1 | 2342 | |
185fb14a AK |
2343 | /* Add (or update) attribute to hash. */ |
2344 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2345 | |
185fb14a AK |
2346 | /* Create new route with its attribute. */ |
2347 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2348 | attr_new, dest); | |
2349 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2350 | bgp_path_info_extra_get(pi); | |
2351 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2352 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2353 | if (parent_pi->extra) { | |
2354 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2355 | sizeof(pi->extra->label)); | |
2356 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2357 | } |
185fb14a | 2358 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2359 | |
185fb14a | 2360 | return pi; |
50f74cf1 | 2361 | } |
2362 | ||
d3135ba3 | 2363 | /* |
2364 | * Install route entry into the VRF routing table and invoke route selection. | |
2365 | */ | |
2366 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2367 | const struct prefix_evpn *evp, |
40381db7 | 2368 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2369 | { |
9bcb3eef | 2370 | struct bgp_dest *dest; |
40381db7 | 2371 | struct bgp_path_info *pi; |
1ec31309 | 2372 | struct attr attr; |
d3135ba3 | 2373 | struct attr *attr_new; |
c4edf708 | 2374 | int ret = 0; |
d3135ba3 | 2375 | struct prefix p; |
2376 | struct prefix *pp = &p; | |
2377 | afi_t afi = 0; | |
2378 | safi_t safi = 0; | |
5f0c5ec8 | 2379 | bool new_pi = false; |
d3135ba3 | 2380 | |
2381 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2382 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2383 | |
2dbe669b | 2384 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2385 | zlog_debug( |
2dbe669b DA |
2386 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2387 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2388 | parent_pi->flags); | |
1eb88002 | 2389 | |
d3135ba3 | 2390 | /* Create (or fetch) route within the VRF. */ |
2391 | /* NOTE: There is no RD here. */ | |
3714a385 | 2392 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2393 | afi = AFI_IP; |
2394 | safi = SAFI_UNICAST; | |
9bcb3eef | 2395 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2396 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2397 | afi = AFI_IP6; |
2398 | safi = SAFI_UNICAST; | |
9bcb3eef | 2399 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2400 | } else |
2401 | return 0; | |
2402 | ||
1ec31309 | 2403 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2404 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2405 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2406 | * address for the rest of the code to flow through. In the case of IPv4, | |
2407 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2408 | */ |
6f4f49b2 | 2409 | attr = *parent_pi->attr; |
1ec31309 | 2410 | if (afi == AFI_IP6) |
2411 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2412 | else |
2413 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2414 | |
d3135ba3 | 2415 | /* Check if route entry is already present. */ |
9bcb3eef | 2416 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2417 | if (pi->extra |
2418 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2419 | break; |
2420 | ||
5f0c5ec8 | 2421 | if (!pi) { |
9bcb3eef | 2422 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2423 | new_pi = true; |
2424 | } else { | |
40381db7 DS |
2425 | if (attrhash_cmp(pi->attr, &attr) |
2426 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2427 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2428 | return 0; |
2429 | } | |
2430 | /* The attribute has changed. */ | |
2431 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2432 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2433 | |
2434 | /* Restore route, if needed. */ | |
40381db7 | 2435 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2436 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2437 | |
2438 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2439 | if ((afi == AFI_IP |
2440 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2441 | || (afi == AFI_IP6 | |
2442 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2443 | &attr_new->mp_nexthop_global))) | |
2444 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2445 | |
9bcb3eef | 2446 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2447 | /* Unintern existing, set to new. */ |
40381db7 DS |
2448 | bgp_attr_unintern(&pi->attr); |
2449 | pi->attr = attr_new; | |
2450 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2451 | } |
d846e917 | 2452 | /* as it is an importation, change nexthop */ |
9bcb3eef | 2453 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); |
d3135ba3 | 2454 | |
9bcb3eef | 2455 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2456 | safi); |
b49cdf4c | 2457 | |
d3135ba3 | 2458 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2459 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2460 | |
7452e879 | 2461 | /* Process for route leaking. */ |
2462 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2463 | ||
9bcb3eef | 2464 | bgp_dest_unlock_node(dest); |
3c11d70a | 2465 | |
5f0c5ec8 | 2466 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2467 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2468 | new_pi ? "new" : "update", dest, | |
2469 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2470 | pi->flags); | |
5f0c5ec8 | 2471 | |
d3135ba3 | 2472 | return ret; |
2473 | } | |
2474 | ||
128ea8ab | 2475 | /* |
2476 | * Install route entry into the VNI routing table and invoke route selection. | |
2477 | */ | |
d62a17ae | 2478 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2479 | const struct prefix_evpn *p, |
40381db7 | 2480 | struct bgp_path_info *parent_pi) |
d62a17ae | 2481 | { |
9bcb3eef | 2482 | struct bgp_dest *dest; |
40381db7 | 2483 | struct bgp_path_info *pi; |
9c7edc03 | 2484 | struct bgp_path_info *local_pi; |
d62a17ae | 2485 | struct attr *attr_new; |
2486 | int ret; | |
c44ab6f1 AK |
2487 | struct prefix_evpn ad_evp; |
2488 | ||
2489 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2490 | * we need to create a different copy for the VNI | |
2491 | */ | |
2492 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2493 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2494 | parent_pi->attr->nexthop); | |
d62a17ae | 2495 | |
2496 | /* Create (or fetch) route within the VNI. */ | |
2497 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2498 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2499 | |
2500 | /* Check if route entry is already present. */ | |
9bcb3eef | 2501 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2502 | if (pi->extra |
2503 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2504 | break; |
2505 | ||
bd0254af MS |
2506 | if (!pi) { |
2507 | /* Create an info */ | |
26c03e43 | 2508 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2509 | parent_pi->attr); |
bd0254af | 2510 | } else { |
40381db7 DS |
2511 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2512 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2513 | bgp_dest_unlock_node(dest); |
d62a17ae | 2514 | return 0; |
2515 | } | |
2516 | /* The attribute has changed. */ | |
2517 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2518 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2519 | |
50f74cf1 | 2520 | /* Restore route, if needed. */ |
40381db7 | 2521 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2522 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2523 | |
2524 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2525 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2526 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2527 | |
2528 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2529 | bgp_attr_unintern(&pi->attr); |
2530 | pi->attr = attr_new; | |
2531 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2532 | } |
2533 | ||
26c03e43 AK |
2534 | /* MAC-IP routes in the VNI table are linked to the destination ES */ |
2535 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
2536 | bgp_evpn_path_es_link(pi, vpn->vni, | |
2537 | bgp_evpn_attr_get_esi(pi->attr)); | |
2538 | ||
50f74cf1 | 2539 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2540 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2541 | |
9c7edc03 AK |
2542 | /* if the best path is a local path with a non-zero ES |
2543 | * sync info against the local path may need to be updated | |
2544 | * when a remote path is added/updated (including changes | |
2545 | * from sync-path to remote-path) | |
2546 | */ | |
2547 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2548 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2549 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2550 | __func__); | |
2551 | ||
9bcb3eef | 2552 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2553 | |
50f74cf1 | 2554 | return ret; |
2555 | } | |
2556 | ||
d3135ba3 | 2557 | /* |
2558 | * Uninstall route entry from the VRF routing table and send message | |
2559 | * to zebra, if appropriate. | |
2560 | */ | |
2561 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2562 | const struct prefix_evpn *evp, |
40381db7 | 2563 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2564 | { |
9bcb3eef | 2565 | struct bgp_dest *dest; |
40381db7 | 2566 | struct bgp_path_info *pi; |
c4edf708 | 2567 | int ret = 0; |
d3135ba3 | 2568 | struct prefix p; |
2569 | struct prefix *pp = &p; | |
2570 | afi_t afi = 0; | |
2571 | safi_t safi = 0; | |
2572 | ||
2573 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2574 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2575 | |
2dbe669b | 2576 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2577 | zlog_debug( |
2dbe669b DA |
2578 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2579 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2580 | parent_pi->flags); | |
1eb88002 | 2581 | |
d3135ba3 | 2582 | /* Locate route within the VRF. */ |
2583 | /* NOTE: There is no RD here. */ | |
3714a385 | 2584 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2585 | afi = AFI_IP; |
2586 | safi = SAFI_UNICAST; | |
9bcb3eef | 2587 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2588 | } else { |
2589 | afi = AFI_IP6; | |
2590 | safi = SAFI_UNICAST; | |
9bcb3eef | 2591 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2592 | } |
2593 | ||
9bcb3eef | 2594 | if (!dest) |
d3135ba3 | 2595 | return 0; |
2596 | ||
2597 | /* Find matching route entry. */ | |
9bcb3eef | 2598 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2599 | if (pi->extra |
2600 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2601 | break; |
2602 | ||
40381db7 | 2603 | if (!pi) |
d3135ba3 | 2604 | return 0; |
2605 | ||
5f0c5ec8 | 2606 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2607 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2608 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2609 | pi->flags); | |
5f0c5ec8 | 2610 | |
7452e879 | 2611 | /* Process for route leaking. */ |
2612 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2613 | ||
9bcb3eef | 2614 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2615 | safi); |
4c7a11d5 | 2616 | |
d3135ba3 | 2617 | /* Mark entry for deletion */ |
9bcb3eef | 2618 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2619 | |
2620 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2621 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2622 | |
2623 | /* Unlock route node. */ | |
9bcb3eef | 2624 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2625 | |
2626 | return ret; | |
2627 | } | |
2628 | ||
128ea8ab | 2629 | /* |
2630 | * Uninstall route entry from the VNI routing table and send message | |
2631 | * to zebra, if appropriate. | |
2632 | */ | |
d62a17ae | 2633 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2634 | const struct prefix_evpn *p, |
40381db7 | 2635 | struct bgp_path_info *parent_pi) |
128ea8ab | 2636 | { |
9bcb3eef | 2637 | struct bgp_dest *dest; |
40381db7 | 2638 | struct bgp_path_info *pi; |
9c7edc03 | 2639 | struct bgp_path_info *local_pi; |
d62a17ae | 2640 | int ret; |
c44ab6f1 AK |
2641 | struct prefix_evpn ad_evp; |
2642 | ||
2643 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2644 | * we need to create a different copy for the VNI | |
2645 | */ | |
2646 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2647 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2648 | parent_pi->attr->nexthop); | |
128ea8ab | 2649 | |
d62a17ae | 2650 | /* Locate route within the VNI. */ |
2651 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2652 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2653 | if (!dest) | |
d62a17ae | 2654 | return 0; |
128ea8ab | 2655 | |
d62a17ae | 2656 | /* Find matching route entry. */ |
9bcb3eef | 2657 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2658 | if (pi->extra |
2659 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2660 | break; |
128ea8ab | 2661 | |
40381db7 | 2662 | if (!pi) |
d62a17ae | 2663 | return 0; |
128ea8ab | 2664 | |
d62a17ae | 2665 | /* Mark entry for deletion */ |
9bcb3eef | 2666 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2667 | |
d62a17ae | 2668 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2669 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2670 | |
9c7edc03 AK |
2671 | /* if the best path is a local path with a non-zero ES |
2672 | * sync info against the local path may need to be updated | |
2673 | * when a remote path is deleted | |
2674 | */ | |
2675 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2676 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2677 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2678 | __func__); | |
2679 | ||
d62a17ae | 2680 | /* Unlock route node. */ |
9bcb3eef | 2681 | bgp_dest_unlock_node(dest); |
128ea8ab | 2682 | |
d62a17ae | 2683 | return ret; |
128ea8ab | 2684 | } |
2685 | ||
5ba238b7 MK |
2686 | /* |
2687 | * Given a route entry and a VRF, see if this route entry should be | |
2688 | * imported into the VRF i.e., RTs match. | |
2689 | */ | |
4b7e6066 | 2690 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2691 | struct bgp_path_info *pi) |
5ba238b7 | 2692 | { |
40381db7 | 2693 | struct attr *attr = pi->attr; |
5ba238b7 | 2694 | struct ecommunity *ecom; |
f6e07e1b | 2695 | uint32_t i; |
5ba238b7 MK |
2696 | |
2697 | assert(attr); | |
2698 | /* Route should have valid RT to be even considered. */ | |
2699 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2700 | return 0; | |
2701 | ||
2702 | ecom = attr->ecommunity; | |
2703 | if (!ecom || !ecom->size) | |
2704 | return 0; | |
2705 | ||
2706 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2707 | * matches, we're done. | |
2708 | */ | |
2709 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2710 | uint8_t *pnt; |
2711 | uint8_t type, sub_type; | |
5ba238b7 MK |
2712 | struct ecommunity_val *eval; |
2713 | struct ecommunity_val eval_tmp; | |
2714 | struct vrf_irt_node *irt; | |
2715 | ||
2716 | /* Only deal with RTs */ | |
34540b0d | 2717 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2718 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2719 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2720 | type = *pnt++; |
2721 | sub_type = *pnt++; | |
2722 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2723 | continue; | |
2724 | ||
2725 | /* See if this RT matches specified VNIs import RTs */ | |
2726 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2727 | if (irt) |
5ba238b7 MK |
2728 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2729 | return 1; | |
2730 | ||
2731 | /* Also check for non-exact match. In this, we mask out the AS | |
2732 | * and | |
2733 | * only check on the local-admin sub-field. This is to | |
2734 | * facilitate using | |
2735 | * VNI as the RT for EBGP peering too. | |
2736 | */ | |
2737 | irt = NULL; | |
2738 | if (type == ECOMMUNITY_ENCODE_AS | |
2739 | || type == ECOMMUNITY_ENCODE_AS4 | |
2740 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2741 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2742 | mask_ecom_global_admin(&eval_tmp, eval); |
2743 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2744 | } | |
5d9cbca2 | 2745 | if (irt) |
5ba238b7 MK |
2746 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2747 | return 1; | |
2748 | } | |
2749 | ||
2750 | return 0; | |
2751 | } | |
2752 | ||
128ea8ab | 2753 | /* |
2754 | * Given a route entry and a VNI, see if this route entry should be | |
2755 | * imported into the VNI i.e., RTs match. | |
2756 | */ | |
d62a17ae | 2757 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2758 | struct bgp_path_info *pi) |
d62a17ae | 2759 | { |
40381db7 | 2760 | struct attr *attr = pi->attr; |
d62a17ae | 2761 | struct ecommunity *ecom; |
f6e07e1b | 2762 | uint32_t i; |
d62a17ae | 2763 | |
2764 | assert(attr); | |
2765 | /* Route should have valid RT to be even considered. */ | |
2766 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2767 | return 0; | |
2768 | ||
2769 | ecom = attr->ecommunity; | |
2770 | if (!ecom || !ecom->size) | |
2771 | return 0; | |
2772 | ||
2773 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2774 | * matches, we're done. | |
2775 | */ | |
2776 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2777 | uint8_t *pnt; |
2778 | uint8_t type, sub_type; | |
d62a17ae | 2779 | struct ecommunity_val *eval; |
2780 | struct ecommunity_val eval_tmp; | |
2781 | struct irt_node *irt; | |
2782 | ||
2783 | /* Only deal with RTs */ | |
34540b0d | 2784 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2785 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2786 | + (i * ecom->unit_size)); |
d62a17ae | 2787 | type = *pnt++; |
2788 | sub_type = *pnt++; | |
2789 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2790 | continue; | |
2791 | ||
2792 | /* See if this RT matches specified VNIs import RTs */ | |
2793 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2794 | if (irt) |
d62a17ae | 2795 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2796 | return 1; | |
2797 | ||
2798 | /* Also check for non-exact match. In this, we mask out the AS | |
2799 | * and | |
2800 | * only check on the local-admin sub-field. This is to | |
2801 | * facilitate using | |
2802 | * VNI as the RT for EBGP peering too. | |
2803 | */ | |
2804 | irt = NULL; | |
2805 | if (type == ECOMMUNITY_ENCODE_AS | |
2806 | || type == ECOMMUNITY_ENCODE_AS4 | |
2807 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2808 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2809 | mask_ecom_global_admin(&eval_tmp, eval); |
2810 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2811 | } | |
b1ab0dfe | 2812 | if (irt) |
d62a17ae | 2813 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2814 | return 1; | |
2815 | } | |
2816 | ||
2817 | return 0; | |
128ea8ab | 2818 | } |
2819 | ||
47bf0432 CS |
2820 | /* This API will scan evpn routes for checking attribute's rmac |
2821 | * macthes with bgp instance router mac. It avoid installing | |
2822 | * route into bgp vrf table and remote rmac in bridge table. | |
2823 | */ | |
2824 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2825 | const struct prefix_evpn *evp, |
47bf0432 CS |
2826 | struct bgp_path_info *pi) |
2827 | { | |
2828 | /* evpn route could have learnt prior to L3vni has come up, | |
2829 | * perform rmac check before installing route and | |
2830 | * remote router mac. | |
2831 | * The route will be removed from global bgp table once | |
2832 | * SVI comes up with MAC and stored in hash, triggers | |
2833 | * bgp_mac_rescan_all_evpn_tables. | |
2834 | */ | |
05864da7 | 2835 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2836 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2837 | char attr_str[BUFSIZ] = {0}; |
2838 | ||
5022c833 | 2839 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2840 | |
2dbe669b DA |
2841 | zlog_debug( |
2842 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2843 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2844 | } |
2845 | ||
2846 | return 1; | |
2847 | } | |
2848 | ||
2849 | return 0; | |
2850 | } | |
2851 | ||
bbc57c6c AK |
2852 | /* don't import hosts that are locally attached */ |
2853 | static inline bool | |
2854 | bgp_evpn_skip_vrf_import_of_local_es(const struct prefix_evpn *evp, | |
2855 | struct bgp_path_info *pi, int install) | |
2856 | { | |
26c03e43 AK |
2857 | esi_t *esi; |
2858 | struct in_addr nh; | |
bbc57c6c | 2859 | |
26c03e43 AK |
2860 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2861 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2862 | ||
2863 | /* Don't import routes that point to a local destination */ | |
2864 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2865 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
2866 | char esi_buf[ESI_STR_LEN]; | |
2867 | ||
2868 | zlog_debug( | |
2869 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
2870 | install ? "import" : "unimport", evp, | |
2871 | esi_to_str(esi, esi_buf, | |
2872 | sizeof(esi_buf))); | |
2873 | } | |
2874 | return true; | |
2875 | } | |
2876 | ||
2877 | /* Don't import routes with ES as destination if the nexthop | |
2878 | * has not been advertised via the EAD-ES | |
2879 | */ | |
2880 | if (pi->attr) | |
2881 | nh = pi->attr->nexthop; | |
2882 | else | |
3a6290bd | 2883 | nh.s_addr = INADDR_ANY; |
8bcb09a1 | 2884 | if (install && !bgp_evpn_es_is_vtep_active(esi, nh)) { |
26c03e43 AK |
2885 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
2886 | char esi_buf[ESI_STR_LEN]; | |
2887 | ||
2888 | zlog_debug( | |
2889 | "vrf %s of evpn prefix %pFX skipped, nh %pI4 inactive in es %s", | |
2890 | install ? "import" : "unimport", evp, | |
2891 | &nh, | |
2892 | esi_to_str(esi, esi_buf, | |
2893 | sizeof(esi_buf))); | |
2894 | } | |
2895 | return true; | |
bbc57c6c | 2896 | } |
bbc57c6c AK |
2897 | } |
2898 | return false; | |
2899 | } | |
2900 | ||
5ba238b7 MK |
2901 | /* |
2902 | * Install or uninstall mac-ip routes are appropriate for this | |
2903 | * particular VRF. | |
2904 | */ | |
996c9314 | 2905 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2906 | { |
2907 | afi_t afi; | |
2908 | safi_t safi; | |
9bcb3eef | 2909 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 2910 | struct bgp_table *table; |
40381db7 | 2911 | struct bgp_path_info *pi; |
5ba238b7 | 2912 | int ret; |
5e53dce3 | 2913 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
2914 | |
2915 | afi = AFI_L2VPN; | |
2916 | safi = SAFI_EVPN; | |
5e53dce3 T |
2917 | bgp_evpn = bgp_get_evpn(); |
2918 | if (!bgp_evpn) | |
5ba238b7 MK |
2919 | return -1; |
2920 | ||
2921 | /* Walk entire global routing table and evaluate routes which could be | |
2922 | * imported into this VRF. Note that we need to loop through all global | |
2923 | * routes to determine which route matches the import rt on vrf | |
2924 | */ | |
9bcb3eef DS |
2925 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
2926 | rd_dest = bgp_route_next(rd_dest)) { | |
2927 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
2928 | if (!table) |
2929 | continue; | |
2930 | ||
9bcb3eef DS |
2931 | for (dest = bgp_table_top(table); dest; |
2932 | dest = bgp_route_next(dest)) { | |
2933 | const struct prefix_evpn *evp = | |
2934 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2935 | dest); | |
5ba238b7 | 2936 | |
1eb88002 | 2937 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2938 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2939 | || evp->prefix.route_type | |
2940 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2941 | continue; |
2942 | ||
1eb88002 | 2943 | /* if not a mac+ip route skip this route */ |
3714a385 | 2944 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2945 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2946 | continue; |
2947 | ||
9bcb3eef | 2948 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 2949 | pi = pi->next) { |
5ba238b7 | 2950 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2951 | * this VRF. |
2952 | */ | |
40381db7 DS |
2953 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2954 | && pi->type == ZEBRA_ROUTE_BGP | |
2955 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2956 | continue; |
2957 | ||
bbc57c6c AK |
2958 | /* don't import hosts that are locally attached |
2959 | */ | |
2960 | if (bgp_evpn_skip_vrf_import_of_local_es( | |
2961 | evp, pi, install)) | |
2962 | continue; | |
2963 | ||
40381db7 | 2964 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
2965 | if (bgp_evpn_route_rmac_self_check( |
2966 | bgp_vrf, evp, pi)) | |
2967 | continue; | |
2968 | ||
5ba238b7 | 2969 | if (install) |
996c9314 | 2970 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 2971 | bgp_vrf, evp, pi); |
5ba238b7 | 2972 | else |
996c9314 | 2973 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 2974 | bgp_vrf, evp, pi); |
5ba238b7 MK |
2975 | |
2976 | if (ret) { | |
af4c2728 | 2977 | flog_err( |
e50f7cfd | 2978 | EC_BGP_EVPN_FAIL, |
2dbe669b | 2979 | "Failed to %s EVPN %pFX route in VRF %s", |
5ba238b7 MK |
2980 | install ? "install" |
2981 | : "uninstall", | |
2dbe669b | 2982 | evp, |
996c9314 LB |
2983 | vrf_id_to_name( |
2984 | bgp_vrf->vrf_id)); | |
dc52bece DS |
2985 | bgp_dest_unlock_node(rd_dest); |
2986 | bgp_dest_unlock_node(dest); | |
5ba238b7 MK |
2987 | return ret; |
2988 | } | |
2989 | } | |
2990 | } | |
2991 | } | |
2992 | } | |
2993 | ||
2994 | return 0; | |
2995 | } | |
2996 | ||
128ea8ab | 2997 | /* |
2998 | * Install or uninstall routes of specified type that are appropriate for this | |
2999 | * particular VNI. | |
3000 | */ | |
d62a17ae | 3001 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3002 | struct bgpevpn *vpn, | |
3003 | bgp_evpn_route_type rtype, | |
3004 | int install) | |
3005 | { | |
0291c246 MK |
3006 | afi_t afi; |
3007 | safi_t safi; | |
9bcb3eef | 3008 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3009 | struct bgp_table *table; |
40381db7 | 3010 | struct bgp_path_info *pi; |
0291c246 | 3011 | int ret; |
d62a17ae | 3012 | |
3013 | afi = AFI_L2VPN; | |
3014 | safi = SAFI_EVPN; | |
3015 | ||
3016 | /* Walk entire global routing table and evaluate routes which could be | |
3017 | * imported into this VPN. Note that we cannot just look at the routes | |
3018 | * for | |
3019 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3020 | * RD. | |
3021 | */ | |
3022 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3023 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3024 | rd_dest = bgp_route_next(rd_dest)) { | |
3025 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3026 | if (!table) |
3027 | continue; | |
3028 | ||
9bcb3eef DS |
3029 | for (dest = bgp_table_top(table); dest; |
3030 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3031 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3032 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3033 | dest); | |
d62a17ae | 3034 | |
3035 | if (evp->prefix.route_type != rtype) | |
3036 | continue; | |
3037 | ||
9bcb3eef | 3038 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3039 | pi = pi->next) { |
d62a17ae | 3040 | /* Consider "valid" remote routes applicable for |
3041 | * this VNI. */ | |
40381db7 DS |
3042 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3043 | && pi->type == ZEBRA_ROUTE_BGP | |
3044 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3045 | continue; |
3046 | ||
40381db7 | 3047 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3048 | if (install) |
3049 | ret = install_evpn_route_entry( | |
40381db7 | 3050 | bgp, vpn, evp, pi); |
d62a17ae | 3051 | else |
3052 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3053 | bgp, vpn, evp, pi); |
d62a17ae | 3054 | |
3055 | if (ret) { | |
af4c2728 | 3056 | flog_err( |
e50f7cfd | 3057 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3058 | "%u: Failed to %s EVPN %s route in VNI %u", |
3059 | bgp->vrf_id, | |
3060 | install ? "install" | |
3061 | : "uninstall", | |
3062 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3063 | ? "MACIP" | |
3064 | : "IMET", | |
3065 | vpn->vni); | |
dc52bece DS |
3066 | |
3067 | bgp_dest_unlock_node(rd_dest); | |
3068 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3069 | return ret; |
3070 | } | |
3071 | } | |
3072 | } | |
3073 | } | |
3074 | } | |
3075 | ||
3076 | return 0; | |
128ea8ab | 3077 | } |
3078 | ||
5ba238b7 | 3079 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3080 | * is invoked upon l3vni-add or l3vni import rt change |
3081 | */ | |
5ba238b7 MK |
3082 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3083 | { | |
3084 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3085 | return 0; | |
3086 | } | |
3087 | ||
128ea8ab | 3088 | /* |
3089 | * Install any existing remote routes applicable for this VNI into its | |
3090 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3091 | * RT is changed. | |
3092 | */ | |
d62a17ae | 3093 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3094 | { |
d62a17ae | 3095 | int ret; |
128ea8ab | 3096 | |
d62a17ae | 3097 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3098 | * for this VNI. | |
3099 | */ | |
3100 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3101 | 1); | |
3102 | if (ret) | |
3103 | return ret; | |
128ea8ab | 3104 | |
c44ab6f1 AK |
3105 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3106 | 1); | |
3107 | if (ret) | |
3108 | return ret; | |
3109 | ||
d62a17ae | 3110 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3111 | 1); | |
128ea8ab | 3112 | } |
3113 | ||
5ba238b7 MK |
3114 | /* uninstall routes from l3vni vrf. */ |
3115 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3116 | { | |
3117 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3118 | return 0; | |
3119 | } | |
3120 | ||
90e60aa7 | 3121 | /* |
3122 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3123 | * this is invoked is upon an import RT change. | |
3124 | */ | |
d62a17ae | 3125 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3126 | { |
d62a17ae | 3127 | int ret; |
90e60aa7 | 3128 | |
d62a17ae | 3129 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3130 | * applicable | |
3131 | * for this VNI. | |
3132 | */ | |
3133 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3134 | 0); | |
3135 | if (ret) | |
3136 | return ret; | |
90e60aa7 | 3137 | |
c44ab6f1 AK |
3138 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3139 | 1); | |
3140 | if (ret) | |
3141 | return ret; | |
3142 | ||
3143 | ||
d62a17ae | 3144 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3145 | 0); | |
90e60aa7 | 3146 | } |
3147 | ||
d3135ba3 | 3148 | /* |
3149 | * Install or uninstall route in matching VRFs (list). | |
3150 | */ | |
3151 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3152 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3153 | struct bgp_path_info *pi, |
d3135ba3 | 3154 | struct list *vrfs, int install) |
3155 | { | |
d3135ba3 | 3156 | struct bgp *bgp_vrf; |
3157 | struct listnode *node, *nnode; | |
3158 | ||
90264d64 | 3159 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3160 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3161 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3162 | return 0; |
3163 | ||
90264d64 | 3164 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3165 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3166 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3167 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3168 | return 0; |
3169 | ||
bbc57c6c AK |
3170 | /* don't import hosts that are locally attached */ |
3171 | if (bgp_evpn_skip_vrf_import_of_local_es(evp, pi, install)) | |
3172 | return 0; | |
3173 | ||
d3135ba3 | 3174 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3175 | int ret; | |
3176 | ||
3177 | if (install) | |
40381db7 | 3178 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3179 | else |
996c9314 | 3180 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3181 | pi); |
d3135ba3 | 3182 | |
3183 | if (ret) { | |
e50f7cfd | 3184 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3185 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3186 | bgp_def->vrf_id, |
2dbe669b | 3187 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3188 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3189 | return ret; |
3190 | } | |
3191 | } | |
3192 | ||
3193 | return 0; | |
3194 | } | |
3195 | ||
128ea8ab | 3196 | /* |
3197 | * Install or uninstall route in matching VNIs (list). | |
3198 | */ | |
d62a17ae | 3199 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3200 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3201 | struct bgp_path_info *pi, |
d62a17ae | 3202 | struct list *vnis, int install) |
128ea8ab | 3203 | { |
d62a17ae | 3204 | struct bgpevpn *vpn; |
3205 | struct listnode *node, *nnode; | |
128ea8ab | 3206 | |
d62a17ae | 3207 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3208 | int ret; | |
128ea8ab | 3209 | |
d62a17ae | 3210 | if (!is_vni_live(vpn)) |
3211 | continue; | |
128ea8ab | 3212 | |
d62a17ae | 3213 | if (install) |
40381db7 | 3214 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3215 | else |
40381db7 | 3216 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3217 | |
d62a17ae | 3218 | if (ret) { |
1c50c1c0 QY |
3219 | flog_err(EC_BGP_EVPN_FAIL, |
3220 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3221 | bgp->vrf_id, install ? "install" : "uninstall", | |
3222 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3223 | ? "MACIP" | |
3224 | : "IMET", | |
3225 | vpn->vni); | |
d62a17ae | 3226 | return ret; |
3227 | } | |
3228 | } | |
128ea8ab | 3229 | |
d62a17ae | 3230 | return 0; |
128ea8ab | 3231 | } |
3232 | ||
3233 | /* | |
50f74cf1 | 3234 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3235 | */ |
26c03e43 AK |
3236 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3237 | safi_t safi, const struct prefix *p, | |
3238 | struct bgp_path_info *pi, | |
3239 | int import, bool in_vni_rt, | |
3240 | bool in_vrf_rt) | |
d62a17ae | 3241 | { |
3242 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3243 | struct attr *attr = pi->attr; |
d62a17ae | 3244 | struct ecommunity *ecom; |
f6e07e1b | 3245 | uint32_t i; |
c44ab6f1 | 3246 | struct prefix_evpn ad_evp; |
d62a17ae | 3247 | |
3248 | assert(attr); | |
3249 | ||
50f74cf1 | 3250 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3251 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3252 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3253 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3254 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3255 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3256 | return 0; |
3257 | ||
3258 | /* If we don't have Route Target, nothing much to do. */ | |
3259 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3260 | return 0; | |
3261 | ||
c44ab6f1 AK |
3262 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3263 | * we need to create a different copy for the VNI | |
3264 | */ | |
3265 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3266 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3267 | ||
d62a17ae | 3268 | ecom = attr->ecommunity; |
3269 | if (!ecom || !ecom->size) | |
3270 | return -1; | |
3271 | ||
50f74cf1 | 3272 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3273 | * attached to the route */ | |
d62a17ae | 3274 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3275 | uint8_t *pnt; |
3276 | uint8_t type, sub_type; | |
d62a17ae | 3277 | struct ecommunity_val *eval; |
3278 | struct ecommunity_val eval_tmp; | |
996c9314 | 3279 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3280 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3281 | struct bgp_evpn_es *es; |
d62a17ae | 3282 | |
3283 | /* Only deal with RTs */ | |
34540b0d | 3284 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3285 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3286 | + (i * ecom->unit_size)); |
d62a17ae | 3287 | type = *pnt++; |
3288 | sub_type = *pnt++; | |
3289 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3290 | continue; | |
3291 | ||
50f74cf1 | 3292 | /* |
3293 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3294 | * IMET route is imported into VNI table. | |
3295 | * prefix routes are imported into VRF table. | |
523cafc4 | 3296 | */ |
50f74cf1 | 3297 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3298 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3299 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3300 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3301 | |
26c03e43 | 3302 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3303 | if (irt) |
40381db7 DS |
3304 | install_uninstall_route_in_vnis( |
3305 | bgp, afi, safi, evp, pi, irt->vnis, | |
3306 | import); | |
50f74cf1 | 3307 | |
26c03e43 | 3308 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3309 | if (vrf_irt) |
40381db7 DS |
3310 | install_uninstall_route_in_vrfs( |
3311 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3312 | import); | |
50f74cf1 | 3313 | |
3314 | /* Also check for non-exact match. | |
3315 | * In this, we mask out the AS and | |
3316 | * only check on the local-admin sub-field. | |
3317 | * This is to facilitate using | |
3318 | * VNI as the RT for EBGP peering too. | |
3319 | */ | |
3320 | irt = NULL; | |
3321 | vrf_irt = NULL; | |
3322 | if (type == ECOMMUNITY_ENCODE_AS | |
3323 | || type == ECOMMUNITY_ENCODE_AS4 | |
3324 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3325 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3326 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3327 | if (in_vni_rt) |
3328 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3329 | if (in_vrf_rt) | |
3330 | vrf_irt = | |
3331 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3332 | } |
3333 | ||
3334 | if (irt) | |
40381db7 DS |
3335 | install_uninstall_route_in_vnis( |
3336 | bgp, afi, safi, evp, pi, irt->vnis, | |
3337 | import); | |
50f74cf1 | 3338 | if (vrf_irt) |
40381db7 DS |
3339 | install_uninstall_route_in_vrfs( |
3340 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3341 | import); | |
50f74cf1 | 3342 | } |
3343 | ||
3344 | /* es route is imported into the es table */ | |
3345 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3346 | ||
3347 | /* we will match based on the entire esi to avoid | |
3348 | * imoort of an es route for esi2 into esi1 | |
3349 | */ | |
c44ab6f1 | 3350 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3351 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3352 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3353 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3354 | } |
d62a17ae | 3355 | } |
3356 | ||
3357 | return 0; | |
128ea8ab | 3358 | } |
3359 | ||
26c03e43 AK |
3360 | /* |
3361 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3362 | */ | |
3363 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3364 | const struct prefix *p, | |
3365 | struct bgp_path_info *pi, int import) | |
3366 | { | |
3367 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3368 | true, true); | |
3369 | } | |
3370 | ||
3371 | /* Import the pi into vrf routing tables */ | |
3372 | void bgp_evpn_import_route_in_vrfs(struct bgp_path_info *pi, int import) | |
3373 | { | |
3374 | struct bgp *bgp_evpn; | |
3375 | ||
3376 | bgp_evpn = bgp_get_evpn(); | |
3377 | if (!bgp_evpn) | |
3378 | return; | |
3379 | ||
3380 | bgp_evpn_install_uninstall_table(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3381 | &pi->net->p, pi, import, false /*vpn*/, | |
3382 | true /*vrf*/); | |
3383 | } | |
3384 | ||
2bb9eff4 DS |
3385 | /* |
3386 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3387 | * routes | |
3388 | */ | |
80b140af MK |
3389 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3390 | { | |
5fd9c12b KA |
3391 | /* Delete ipv4 default route and withdraw from peers */ |
3392 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3393 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3394 | SAFI_UNICAST, false); | |
3395 | ||
80b140af | 3396 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3397 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3398 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3399 | |
5fd9c12b KA |
3400 | /* Delete ipv6 default route and withdraw from peers */ |
3401 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3402 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3403 | SAFI_UNICAST, false); | |
3404 | ||
80b140af | 3405 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3406 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3407 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3408 | } |
3409 | ||
2bb9eff4 DS |
3410 | /* |
3411 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3412 | * routes | |
3413 | */ | |
5394a276 | 3414 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3415 | { |
5394a276 CS |
3416 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3417 | ||
3418 | bgp_evpn = bgp_get_evpn(); | |
3419 | if (!bgp_evpn) | |
3420 | return; | |
3421 | ||
80b140af | 3422 | /* update all ipv4 routes */ |
fdf19f06 MK |
3423 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3424 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3425 | |
5fd9c12b KA |
3426 | /* update ipv4 default route and withdraw from peers */ |
3427 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3428 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3429 | SAFI_UNICAST, true); | |
3430 | ||
80b140af | 3431 | /* update all ipv6 routes */ |
fdf19f06 MK |
3432 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3433 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3434 | |
3435 | /* update ipv6 default route and withdraw from peers */ | |
3436 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3437 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3438 | SAFI_UNICAST, true); | |
3439 | ||
80b140af MK |
3440 | } |
3441 | ||
676f83b9 | 3442 | /* |
3443 | * update and advertise local routes for a VRF as type-5 routes. | |
3444 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3445 | * done in the global route table using the routes which already exist in the | |
3446 | * VRF routing table | |
3447 | */ | |
80b140af | 3448 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3449 | { |
80b140af MK |
3450 | /* skip if the RD is configured */ |
3451 | if (is_vrf_rd_configured(bgp_vrf)) | |
3452 | return; | |
3453 | ||
3454 | /* derive the RD for the VRF based on new router-id */ | |
3455 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3456 | ||
3457 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3458 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3459 | } |
3460 | ||
3461 | /* | |
3462 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3463 | * This is invoked upon VRF RD change. The processing is done only from global | |
3464 | * table. | |
3465 | */ | |
80b140af | 3466 | static void withdraw_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 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3473 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3474 | } |
3475 | ||
90e60aa7 | 3476 | /* |
3477 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3478 | * change. Note that the processing is done only on the global route table | |
3479 | * using routes that already exist in the per-VNI table. | |
3480 | */ | |
d62a17ae | 3481 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3482 | { | |
3483 | struct prefix_evpn p; | |
9bcb3eef | 3484 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3485 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3486 | struct attr *attr; |
3487 | afi_t afi = AFI_L2VPN; | |
3488 | safi_t safi = SAFI_EVPN; | |
3489 | ||
3490 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3491 | * attributes to create and advertise the type-3 route for this VNI | |
3492 | * in the global table. | |
fd069644 DS |
3493 | * |
3494 | * RT-3 only if doing head-end replication | |
d62a17ae | 3495 | */ |
833b8a50 AK |
3496 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3497 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3498 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3499 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3500 | if (!dest) /* unexpected */ | |
fd069644 | 3501 | return 0; |
9bcb3eef | 3502 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3503 | if (pi->peer == bgp->peer_self && |
3504 | pi->type == ZEBRA_ROUTE_BGP | |
3505 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3506 | break; | |
3507 | if (!pi) /* unexpected */ | |
3508 | return 0; | |
3509 | attr = pi->attr; | |
d62a17ae | 3510 | |
9c7edc03 AK |
3511 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3512 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3513 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3514 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3515 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3516 | |
fd069644 | 3517 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3518 | bgp_process(bgp, global_dest, afi, safi); |
3519 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3520 | } |
d62a17ae | 3521 | |
3522 | /* Now, walk this VNI's route table and use the route and its attribute | |
3523 | * to create and schedule route in global table. | |
3524 | */ | |
9bcb3eef DS |
3525 | for (dest = bgp_table_top(vpn->route_table); dest; |
3526 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3527 | const struct prefix_evpn *evp = |
9bcb3eef | 3528 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3529 | |
3530 | /* Identify MAC-IP local routes. */ | |
3531 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3532 | continue; | |
3533 | ||
9bcb3eef | 3534 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3535 | if (pi->peer == bgp->peer_self |
3536 | && pi->type == ZEBRA_ROUTE_BGP | |
3537 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3538 | break; |
40381db7 | 3539 | if (!pi) |
d62a17ae | 3540 | continue; |
3541 | ||
3542 | /* Create route in global routing table using this route entry's | |
3543 | * attribute. | |
3544 | */ | |
40381db7 | 3545 | attr = pi->attr; |
c44ab6f1 | 3546 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3547 | evp, &vpn->prd); |
9bcb3eef | 3548 | assert(global_dest); |
9c7edc03 AK |
3549 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, 1, |
3550 | &global_pi, 0, | |
3551 | mac_mobility_seqnum(attr), | |
3552 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3553 | |
3554 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3555 | bgp_process(bgp, global_dest, afi, safi); |
3556 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3557 | } |
3558 | ||
3559 | return 0; | |
90e60aa7 | 3560 | } |
3561 | ||
3562 | /* | |
3563 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3564 | * table. Invoked upon router-id change. | |
3565 | */ | |
d62a17ae | 3566 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3567 | { |
d62a17ae | 3568 | int ret; |
3569 | struct prefix_evpn p; | |
9bcb3eef | 3570 | struct bgp_dest *global_dest; |
40381db7 | 3571 | struct bgp_path_info *pi; |
d62a17ae | 3572 | afi_t afi = AFI_L2VPN; |
3573 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3574 | |
d62a17ae | 3575 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3576 | * for this VNI - from the global table. | |
3577 | */ | |
3578 | ret = delete_global_type2_routes(bgp, vpn); | |
3579 | if (ret) | |
3580 | return ret; | |
90e60aa7 | 3581 | |
d62a17ae | 3582 | /* Remove type-3 route for this VNI from global table. */ |
3583 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3584 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3585 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3586 | if (global_dest) { |
d62a17ae | 3587 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3588 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3589 | |
d62a17ae | 3590 | /* Schedule for processing - withdraws to peers happen from |
3591 | * this table. | |
3592 | */ | |
40381db7 | 3593 | if (pi) |
9bcb3eef DS |
3594 | bgp_process(bgp, global_dest, afi, safi); |
3595 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3596 | } |
90e60aa7 | 3597 | |
d62a17ae | 3598 | return 0; |
90e60aa7 | 3599 | } |
3600 | ||
2d48ee25 | 3601 | /* |
3602 | * Handle router-id change. Update and advertise local routes corresponding | |
3603 | * to this VNI from peers. Note that this is invoked after updating the | |
3604 | * router-id. The routes in the per-VNI table are used to create routes in | |
3605 | * the global table and schedule them. | |
3606 | */ | |
e3b78da8 | 3607 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3608 | { |
e3b78da8 | 3609 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3610 | |
d62a17ae | 3611 | /* Skip VNIs with configured RD. */ |
3612 | if (is_rd_configured(vpn)) | |
3613 | return; | |
2d48ee25 | 3614 | |
d62a17ae | 3615 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3616 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3617 | } |
3618 | ||
3619 | /* | |
3620 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3621 | * to this VNI from peers. Note that this is invoked prior to updating | |
3622 | * the router-id and is done only on the global route table, the routes | |
3623 | * are needed in the per-VNI table to re-advertise with new router id. | |
3624 | */ | |
e3b78da8 | 3625 | static void withdraw_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 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3634 | } |
3635 | ||
fd069644 DS |
3636 | /* |
3637 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3638 | * This is invoked upon flooding mode changing to head-end replication. | |
3639 | */ | |
e3b78da8 | 3640 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3641 | { |
e3b78da8 | 3642 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3643 | struct bgp *bgp = data; |
3644 | struct prefix_evpn p; | |
3645 | ||
833b8a50 AK |
3646 | if (!vpn || !is_vni_live(vpn) || |
3647 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3648 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3649 | return; |
3650 | ||
3651 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3652 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3653 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3654 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3655 | } | |
3656 | ||
3657 | /* | |
3658 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3659 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3660 | */ | |
e3b78da8 | 3661 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3662 | { |
e3b78da8 | 3663 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3664 | struct bgp *bgp = data; |
3665 | struct prefix_evpn p; | |
3666 | ||
3667 | if (!vpn || !is_vni_live(vpn)) | |
3668 | return; | |
3669 | ||
3670 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3671 | delete_evpn_route(bgp, vpn, &p); | |
3672 | } | |
3673 | ||
128ea8ab | 3674 | /* |
3675 | * Process received EVPN type-2 route (advertise or withdraw). | |
3676 | */ | |
d62a17ae | 3677 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3678 | struct attr *attr, uint8_t *pfx, int psize, |
3679 | uint32_t addpath_id) | |
d62a17ae | 3680 | { |
3681 | struct prefix_rd prd; | |
e121d831 QY |
3682 | struct prefix_evpn p = {}; |
3683 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3684 | uint8_t ipaddr_len; |
3685 | uint8_t macaddr_len; | |
e121d831 QY |
3686 | /* holds the VNI(s) as in packet */ |
3687 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3688 | uint32_t num_labels = 0; |
554cd77a | 3689 | uint32_t eth_tag; |
d62a17ae | 3690 | int ret; |
3691 | ||
3692 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3693 | * additional 3 bytes if there is a second label (VNI): | |
3694 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3695 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3696 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3697 | */ | |
3698 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3699 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3700 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3701 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3702 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3703 | return -1; |
3704 | } | |
3705 | ||
e121d831 QY |
3706 | struct stream *pkt = stream_new(psize); |
3707 | stream_put(pkt, pfx, psize); | |
554cd77a | 3708 | |
d62a17ae | 3709 | /* Make prefix_rd */ |
3710 | prd.family = AF_UNSPEC; | |
3711 | prd.prefixlen = 64; | |
e121d831 QY |
3712 | |
3713 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3714 | |
3715 | /* Make EVPN prefix. */ | |
b03b8898 | 3716 | p.family = AF_EVPN; |
50f74cf1 | 3717 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3718 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3719 | ||
554cd77a | 3720 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3721 | if (attr) { |
e121d831 QY |
3722 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3723 | ||
9c7edc03 AK |
3724 | if (bgp_evpn_is_esi_local(&attr->esi)) |
3725 | attr->es_flags |= ATTR_ES_IS_LOCAL; | |
3726 | else | |
3727 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3728 | } else { |
3729 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3730 | } |
d62a17ae | 3731 | |
554cd77a | 3732 | /* Copy Ethernet Tag */ |
e121d831 | 3733 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3734 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3735 | |
3736 | /* Get the MAC Addr len */ | |
e121d831 | 3737 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3738 | |
3739 | /* Get the MAC Addr */ | |
28328ea9 | 3740 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3741 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3742 | } else { |
af4c2728 | 3743 | flog_err( |
e50f7cfd | 3744 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3745 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3746 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3747 | goto fail; |
d62a17ae | 3748 | } |
3749 | ||
3750 | ||
3751 | /* Get the IP. */ | |
e121d831 QY |
3752 | STREAM_GETC(pkt, ipaddr_len); |
3753 | ||
d62a17ae | 3754 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3755 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3756 | flog_err( |
e50f7cfd | 3757 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3758 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3759 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3760 | goto fail; |
d62a17ae | 3761 | } |
3762 | ||
3763 | if (ipaddr_len) { | |
3764 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3765 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3766 | ? IPADDR_V4 |
3767 | : IPADDR_V6; | |
e121d831 | 3768 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3769 | } |
d62a17ae | 3770 | |
b57ba6d2 | 3771 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3772 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3773 | num_labels++; |
e121d831 | 3774 | |
b57ba6d2 | 3775 | /* Do we have a second VNI? */ |
e121d831 | 3776 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3777 | num_labels++; |
e121d831 | 3778 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3779 | } |
d62a17ae | 3780 | |
3781 | /* Process the route. */ | |
3782 | if (attr) | |
3783 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3784 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3785 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3786 | else |
3787 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3788 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3789 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3790 | goto done; |
3791 | ||
3792 | fail: | |
3793 | stream_failure: | |
3794 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3795 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3796 | peer->bgp->vrf_id, peer->host); | |
3797 | ret = -1; | |
3798 | done: | |
3799 | stream_free(pkt); | |
d62a17ae | 3800 | return ret; |
128ea8ab | 3801 | } |
3802 | ||
3803 | /* | |
3804 | * Process received EVPN type-3 route (advertise or withdraw). | |
3805 | */ | |
d62a17ae | 3806 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3807 | struct attr *attr, uint8_t *pfx, int psize, |
3808 | uint32_t addpath_id) | |
d62a17ae | 3809 | { |
3810 | struct prefix_rd prd; | |
3811 | struct prefix_evpn p; | |
d7c0a89a | 3812 | uint8_t ipaddr_len; |
554cd77a | 3813 | uint32_t eth_tag; |
d62a17ae | 3814 | int ret; |
3815 | ||
3816 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3817 | * IP len (1) and IP (4 or 16). | |
3818 | */ | |
3819 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3820 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3821 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3822 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3823 | return -1; |
3824 | } | |
3825 | ||
7fd077aa | 3826 | /* If PMSI is present, log if it is anything other than IR. |
3827 | * Note: We just simply ignore the values as it is not clear if | |
3828 | * doing anything else is better. | |
3829 | */ | |
3830 | if (attr && | |
3831 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3832 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3833 | ||
3834 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3835 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3836 | flog_warn( | |
3837 | EC_BGP_EVPN_PMSI_PRESENT, | |
3838 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3839 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3840 | } |
3841 | } | |
3842 | ||
d62a17ae | 3843 | /* Make prefix_rd */ |
3844 | prd.family = AF_UNSPEC; | |
3845 | prd.prefixlen = 64; | |
3846 | memcpy(&prd.val, pfx, 8); | |
3847 | pfx += 8; | |
3848 | ||
3849 | /* Make EVPN prefix. */ | |
3850 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3851 | p.family = AF_EVPN; |
50f74cf1 | 3852 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3853 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3854 | ||
554cd77a VB |
3855 | /* Copy Ethernet Tag */ |
3856 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3857 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3858 | pfx += 4; |
3859 | ||
3860 | /* Get the IP. */ | |
3861 | ipaddr_len = *pfx++; | |
3862 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3863 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3864 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3865 | } else { |
af4c2728 | 3866 | flog_err( |
e50f7cfd | 3867 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3868 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3869 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3870 | return -1; | |
3871 | } | |
3872 | ||
3873 | /* Process the route. */ | |
3874 | if (attr) | |
3875 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3876 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3877 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3878 | else |
3879 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3880 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3881 | &prd, NULL, 0, NULL); |
d62a17ae | 3882 | return ret; |
128ea8ab | 3883 | } |
3884 | ||
3885 | /* | |
3886 | * Process received EVPN type-5 route (advertise or withdraw). | |
3887 | */ | |
d62a17ae | 3888 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 3889 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 3890 | uint32_t addpath_id) |
d62a17ae | 3891 | { |
3892 | struct prefix_rd prd; | |
3893 | struct prefix_evpn p; | |
3894 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3895 | uint8_t ippfx_len; |
3896 | uint32_t eth_tag; | |
b57ba6d2 | 3897 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3898 | int ret; |
c6ec0c74 KA |
3899 | afi_t gw_afi; |
3900 | bool is_valid_update = false; | |
d62a17ae | 3901 | |
3902 | /* Type-5 route should be 34 or 58 bytes: | |
3903 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3904 | * GW (4 or 16) and VNI (3). | |
3905 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3906 | */ | |
3907 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3908 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3909 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3910 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3911 | return -1; |
3912 | } | |
3913 | ||
3914 | /* Make prefix_rd */ | |
3915 | prd.family = AF_UNSPEC; | |
3916 | prd.prefixlen = 64; | |
3917 | memcpy(&prd.val, pfx, 8); | |
3918 | pfx += 8; | |
3919 | ||
3920 | /* Make EVPN prefix. */ | |
3921 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3922 | p.family = AF_EVPN; |
50f74cf1 | 3923 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3924 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3925 | ||
3926 | /* Additional information outside of prefix - ESI and GW IP */ | |
3927 | memset(&evpn, 0, sizeof(evpn)); | |
3928 | ||
3929 | /* Fetch ESI */ | |
c44ab6f1 AK |
3930 | if (attr) |
3931 | memcpy(&attr->esi, pfx, sizeof(esi_t)); | |
3932 | pfx += ESI_BYTES; | |
d62a17ae | 3933 | |
3934 | /* Fetch Ethernet Tag. */ | |
3935 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3936 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3937 | pfx += 4; |
3938 | ||
3939 | /* Fetch IP prefix length. */ | |
3940 | ippfx_len = *pfx++; | |
3941 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3942 | flog_err( |
e50f7cfd | 3943 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3944 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3945 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3946 | return -1; | |
3947 | } | |
3714a385 | 3948 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3949 | |
3950 | /* Determine IPv4 or IPv6 prefix */ | |
3951 | /* Since the address and GW are from the same family, this just becomes | |
3952 | * a simple check on the total size. | |
3953 | */ | |
3954 | if (psize == 34) { | |
3714a385 | 3955 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3956 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3957 | pfx += 4; |
3958 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3959 | pfx += 4; | |
c6ec0c74 | 3960 | gw_afi = AF_INET; |
d62a17ae | 3961 | } else { |
3714a385 | 3962 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3963 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3964 | pfx += 16; |
3965 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3966 | pfx += 16; | |
c6ec0c74 | 3967 | gw_afi = AF_INET6; |
d62a17ae | 3968 | } |
3969 | ||
b57ba6d2 MK |
3970 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3971 | memset(&label, 0, sizeof(label)); | |
3972 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3973 | |
3974 | /* | |
3975 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3976 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3977 | * field | |
6b11bd8d | 3978 | */ |
d62a17ae | 3979 | |
c6ec0c74 KA |
3980 | if (attr) { |
3981 | is_valid_update = true; | |
0a50c248 | 3982 | if (is_zero_mac(&attr->rmac) && |
c6ec0c74 KA |
3983 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) |
3984 | is_valid_update = false; | |
3985 | ||
3986 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
3987 | is_valid_update = false; | |
3988 | } | |
3989 | ||
d62a17ae | 3990 | /* Process the route. */ |
c6ec0c74 | 3991 | if (is_valid_update) |
d62a17ae | 3992 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
3993 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3994 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3995 | else |
3996 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3997 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3998 | &prd, &label, 1, &evpn); |
d62a17ae | 3999 | |
4000 | return ret; | |
4001 | } | |
4002 | ||
5f040085 DS |
4003 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4004 | const struct prefix_rd *prd, | |
4005 | mpls_label_t *label, uint32_t num_labels, | |
4006 | struct attr *attr) | |
d62a17ae | 4007 | { |
4008 | int len; | |
4009 | char temp[16]; | |
5f040085 | 4010 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4011 | |
4012 | memset(&temp, 0, 16); | |
b03b8898 | 4013 | if (p->family != AF_EVPN) |
d62a17ae | 4014 | return; |
4015 | p_evpn_p = &(p->u.prefix_evpn); | |
4016 | ||
e9fc2840 | 4017 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4018 | IP and GW-IP have to be both ipv4 or ipv6 |
4019 | */ | |
3714a385 | 4020 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4021 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4022 | else |
e9fc2840 | 4023 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4024 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4025 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4026 | stream_put(s, prd->val, 8); | |
0af35d90 | 4027 | if (attr) |
c44ab6f1 | 4028 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4029 | else |
c44ab6f1 | 4030 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4031 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4032 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4033 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4034 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4035 | else |
3714a385 | 4036 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4037 | if (attr) { |
6c924775 DS |
4038 | const struct bgp_route_evpn *evpn_overlay = |
4039 | bgp_attr_get_evpn_overlay(attr); | |
4040 | ||
3714a385 | 4041 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
6c924775 | 4042 | stream_put_ipv4(s, evpn_overlay->gw_ip.ipv4.s_addr); |
d62a17ae | 4043 | else |
6c924775 | 4044 | stream_put(s, &(evpn_overlay->gw_ip.ipv6), 16); |
d62a17ae | 4045 | } else { |
3714a385 | 4046 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4047 | stream_put_ipv4(s, 0); |
4048 | else | |
4049 | stream_put(s, &temp, 16); | |
4050 | } | |
4051 | ||
b57ba6d2 | 4052 | if (num_labels) |
d62a17ae | 4053 | stream_put(s, label, 3); |
4054 | else | |
4055 | stream_put3(s, 0); | |
128ea8ab | 4056 | } |
4057 | ||
4058 | /* | |
4059 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4060 | */ | |
e3b78da8 | 4061 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4062 | { |
e3b78da8 | 4063 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4064 | |
d62a17ae | 4065 | /* Remove EVPN routes and schedule for processing. */ |
4066 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4067 | |
d62a17ae | 4068 | /* Clear "live" flag and see if hash needs to be freed. */ |
4069 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4070 | if (!is_vni_configured(vpn)) | |
4071 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4072 | } |
4073 | ||
4074 | /* | |
4075 | * Free a VNI entry; iterator function called during cleanup. | |
4076 | */ | |
e3b78da8 | 4077 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4078 | { |
e3b78da8 | 4079 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4080 | |
d62a17ae | 4081 | delete_all_vni_routes(bgp, vpn); |
4082 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4083 | } |
4084 | ||
c581d8b0 MK |
4085 | /* |
4086 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4087 | */ | |
4088 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4089 | { | |
5e53dce3 | 4090 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4091 | |
c581d8b0 | 4092 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4093 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4094 | ||
4095 | /* Map RT to VRF */ | |
5e53dce3 T |
4096 | bgp_evpn = bgp_get_evpn(); |
4097 | if (!bgp_evpn) | |
10ebe1ab MK |
4098 | return; |
4099 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4100 | } |
4101 | ||
4102 | /* | |
4103 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4104 | */ | |
4105 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4106 | { | |
4107 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4108 | } | |
4109 | ||
4110 | /* | |
4111 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4112 | */ | |
4113 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4114 | { | |
4115 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4116 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4117 | } | |
4118 | ||
4119 | /* | |
4120 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4121 | */ | |
4122 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4123 | { | |
4124 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4125 | } | |
128ea8ab | 4126 | |
f1f8b53c MK |
4127 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4128 | { | |
5e53dce3 | 4129 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4130 | struct listnode *node = NULL; |
4131 | struct bgpevpn *vpn = NULL; | |
4132 | ||
5e53dce3 T |
4133 | bgp_evpn = bgp_get_evpn(); |
4134 | if (!bgp_evpn) | |
f1f8b53c MK |
4135 | return; |
4136 | ||
4992b4ae MK |
4137 | /* update all type-5 routes */ |
4138 | update_advertise_vrf_routes(bgp_vrf); | |
4139 | ||
4140 | /* update all type-2 routes */ | |
f1f8b53c | 4141 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4142 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4143 | } |
4144 | ||
bf1061d8 VB |
4145 | /* |
4146 | * Handle autort change for a given VNI. | |
4147 | */ | |
e3b78da8 | 4148 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4149 | { |
e3b78da8 | 4150 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4151 | |
bf1061d8 VB |
4152 | if (!is_import_rt_configured(vpn)) { |
4153 | if (is_vni_live(vpn)) | |
4154 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4155 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4156 | list_delete_all_node(vpn->import_rtl); |
4157 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4158 | if (is_vni_live(vpn)) | |
4159 | bgp_evpn_install_routes(bgp, vpn); | |
4160 | } | |
4161 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4162 | list_delete_all_node(vpn->export_rtl); |
4163 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4164 | if (is_vni_live(vpn)) | |
4165 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4166 | } | |
4167 | } | |
4168 | ||
128ea8ab | 4169 | /* |
4170 | * Public functions. | |
4171 | */ | |
4172 | ||
5424b7ba | 4173 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4174 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4175 | afi_t afi, safi_t safi) |
4176 | { | |
4177 | int ret = 0; | |
4178 | struct prefix_evpn evp; | |
5424b7ba | 4179 | |
31310b25 | 4180 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4181 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4182 | if (ret) |
af4c2728 | 4183 | flog_err( |
e50f7cfd | 4184 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4185 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4186 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4187 | } |
4188 | ||
342dd0c6 | 4189 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4190 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4191 | { |
4192 | struct bgp_table *table = NULL; | |
9bcb3eef | 4193 | struct bgp_dest *dest = NULL; |
40381db7 | 4194 | struct bgp_path_info *pi; |
342dd0c6 | 4195 | |
053905d2 | 4196 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4197 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4198 | /* Only care about "selected" routes. Also ensure that |
4199 | * these are routes that are injectable into EVPN. | |
4200 | */ | |
25f2ca53 | 4201 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4202 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4203 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4204 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4205 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4206 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4207 | safi); |
25f2ca53 | 4208 | break; |
4209 | } | |
4210 | } | |
4211 | } | |
5424b7ba | 4212 | } |
342dd0c6 | 4213 | |
5fd9c12b KA |
4214 | /* |
4215 | * evpn - enable advertisement of default g/w | |
4216 | */ | |
4217 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4218 | safi_t safi, bool add) | |
4219 | { | |
4220 | struct prefix ip_prefix; | |
4221 | ||
4222 | /* form the default prefix 0.0.0.0/0 */ | |
4223 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4224 | ip_prefix.family = afi2family(afi); | |
4225 | ||
4226 | if (add) { | |
4227 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4228 | NULL, afi, safi); | |
4229 | } else { | |
4230 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4231 | afi, safi); | |
4232 | } | |
4233 | } | |
4234 | ||
4235 | ||
2f69f6d3 | 4236 | /* |
4237 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4238 | * to this function correspond to those of the source IP prefix (best | |
4239 | * path in the case of the attr. In the case of a local prefix (when we | |
4240 | * are advertising local subnets), the src_attr will be NULL. | |
4241 | */ | |
bd494ec5 | 4242 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4243 | struct attr *src_attr, afi_t afi, |
4244 | safi_t safi) | |
5424b7ba MK |
4245 | { |
4246 | int ret = 0; | |
4247 | struct prefix_evpn evp; | |
7c82b312 | 4248 | |
31310b25 | 4249 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4250 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4251 | if (ret) | |
e50f7cfd | 4252 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4253 | "%u: Failed to create type-5 route for prefix %pFX", |
4254 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4255 | } |
4256 | ||
2f69f6d3 | 4257 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4258 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4259 | * advertisement is enabled. | |
4260 | */ | |
996c9314 LB |
4261 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4262 | safi_t safi) | |
342dd0c6 | 4263 | { |
4264 | struct bgp_table *table = NULL; | |
9bcb3eef | 4265 | struct bgp_dest *dest = NULL; |
40381db7 | 4266 | struct bgp_path_info *pi; |
342dd0c6 | 4267 | |
053905d2 | 4268 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4269 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4270 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4271 | * attribute. Also, ensure that the route is injectable |
4272 | * into EVPN. | |
2f69f6d3 | 4273 | * TODO: Support for AddPath for EVPN. |
4274 | */ | |
9bcb3eef | 4275 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4276 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4277 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4278 | |
4279 | /* apply the route-map */ | |
4280 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4281 | route_map_result_t ret; |
e34291b8 | 4282 | struct bgp_path_info tmp_pi; |
4283 | struct bgp_path_info_extra tmp_pie; | |
4284 | struct attr tmp_attr; | |
4285 | ||
4286 | tmp_attr = *pi->attr; | |
4287 | ||
4288 | /* Fill temp path_info */ | |
9bcb3eef DS |
4289 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4290 | dest, pi, pi->peer, | |
4291 | &tmp_attr); | |
e34291b8 | 4292 | |
4293 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4294 | |
996c9314 LB |
4295 | ret = route_map_apply( |
4296 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4297 | .map, | |
9bcb3eef | 4298 | bgp_dest_get_prefix(dest), |
1782514f | 4299 | &tmp_pi); |
e34291b8 | 4300 | if (ret == RMAP_DENYMATCH) { |
4301 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4302 | continue; |
e34291b8 | 4303 | } |
4304 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4305 | bgp_vrf, |
9bcb3eef | 4306 | bgp_dest_get_prefix(dest), |
b54892e0 | 4307 | &tmp_attr, afi, safi); |
e34291b8 | 4308 | } else |
4309 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4310 | bgp_vrf, |
9bcb3eef | 4311 | bgp_dest_get_prefix(dest), |
b54892e0 | 4312 | pi->attr, afi, safi); |
2f69f6d3 | 4313 | break; |
4314 | } | |
4315 | } | |
31310b25 | 4316 | } |
342dd0c6 | 4317 | } |
4318 | ||
996c9314 | 4319 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4320 | { |
4321 | struct listnode *node, *nnode, *node_to_del; | |
4322 | struct ecommunity *ecom, *ecom_auto; | |
4323 | struct ecommunity_val eval; | |
4324 | ||
bf1061d8 VB |
4325 | if (bgp->advertise_autort_rfc8365) |
4326 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4327 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4328 | ||
4329 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4330 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4331 | node_to_del = NULL; |
4332 | ||
4333 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4334 | if (ecommunity_match(ecom, ecom_auto)) { | |
4335 | ecommunity_free(&ecom); | |
4336 | node_to_del = node; | |
4337 | } | |
4338 | } | |
4339 | ||
4340 | if (node_to_del) | |
4341 | list_delete_node(rtl, node_to_del); | |
4342 | ||
4343 | ecommunity_free(&ecom_auto); | |
4344 | } | |
4345 | ||
4346 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4347 | struct ecommunity *ecomadd) |
c581d8b0 | 4348 | { |
5ba238b7 | 4349 | /* uninstall routes from vrf */ |
3d0b43d7 | 4350 | if (is_l3vni_live(bgp_vrf)) |
4351 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4352 | |
4353 | /* Cleanup the RT to VRF mapping */ | |
4354 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4355 | ||
c581d8b0 MK |
4356 | /* Remove auto generated RT */ |
4357 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4358 | ||
4359 | /* Add the newly configured RT to RT list */ | |
4360 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4361 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4362 | ||
3d0b43d7 | 4363 | /* map VRF to its RTs and install routes matching the new RTs */ |
4364 | if (is_l3vni_live(bgp_vrf)) { | |
4365 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4366 | install_routes_for_vrf(bgp_vrf); | |
4367 | } | |
c581d8b0 MK |
4368 | } |
4369 | ||
4370 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4371 | struct ecommunity *ecomdel) | |
4372 | { | |
4373 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4374 | struct ecommunity *ecom = NULL; | |
4375 | ||
5ba238b7 | 4376 | /* uninstall routes from vrf */ |
3d0b43d7 | 4377 | if (is_l3vni_live(bgp_vrf)) |
4378 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4379 | |
4380 | /* Cleanup the RT to VRF mapping */ | |
4381 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4382 | ||
c581d8b0 MK |
4383 | /* remove the RT from the RT list */ |
4384 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4385 | if (ecommunity_match(ecom, ecomdel)) { | |
4386 | ecommunity_free(&ecom); | |
4387 | node_to_del = node; | |
4388 | break; | |
4389 | } | |
4390 | } | |
4391 | ||
4392 | if (node_to_del) | |
4393 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4394 | ||
b3a4db3d | 4395 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4396 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4397 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4398 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4399 | if (is_l3vni_live(bgp_vrf)) |
4400 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4401 | } |
4402 | ||
3d0b43d7 | 4403 | /* map VRFs to its RTs and install routes matching this new RT */ |
4404 | if (is_l3vni_live(bgp_vrf)) { | |
4405 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4406 | install_routes_for_vrf(bgp_vrf); | |
4407 | } | |
c581d8b0 MK |
4408 | } |
4409 | ||
4410 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4411 | struct ecommunity *ecomadd) | |
4412 | { | |
4413 | /* remove auto-generated RT */ | |
4414 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4415 | ||
4416 | /* Add the new RT to the RT list */ | |
4417 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4418 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4419 | ||
ebdc9e64 AD |
4420 | if (is_l3vni_live(bgp_vrf)) |
4421 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4422 | } |
4423 | ||
4424 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4425 | struct ecommunity *ecomdel) | |
4426 | { | |
4427 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4428 | struct ecommunity *ecom = NULL; | |
4429 | ||
4430 | /* Remove the RT from the RT list */ | |
4431 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4432 | if (ecommunity_match(ecom, ecomdel)) { | |
4433 | ecommunity_free(&ecom); | |
4434 | node_to_del = node; | |
4435 | break; | |
4436 | } | |
4437 | } | |
4438 | ||
4439 | if (node_to_del) | |
4440 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4441 | ||
1525e99f DS |
4442 | /* |
4443 | * Temporary assert to make SA happy. | |
4444 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4445 | * which means that SA is going to complain about | |
4446 | * the list_isempty call, which doesn't NULL check. | |
4447 | * So until we get this situation cleaned up, here | |
4448 | * we are. | |
4449 | */ | |
4450 | assert(bgp_vrf->vrf_export_rtl); | |
4451 | ||
c581d8b0 | 4452 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4453 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4454 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4455 | if (is_l3vni_live(bgp_vrf)) |
4456 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4457 | } |
4458 | ||
ebdc9e64 AD |
4459 | if (is_l3vni_live(bgp_vrf)) |
4460 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4461 | } |
4462 | ||
2d48ee25 | 4463 | /* |
4464 | * Handle change to BGP router id. This is invoked twice by the change | |
4465 | * handler, first before the router id has been changed and then after | |
4466 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4467 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4468 | * will result in the routes being re-advertised. |
4469 | */ | |
d62a17ae | 4470 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4471 | { |
5394a276 CS |
4472 | struct listnode *node; |
4473 | struct bgp *bgp_vrf; | |
4474 | ||
676f83b9 | 4475 | if (withdraw) { |
4476 | ||
4477 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4478 | stored in the global table for this vrf |
4479 | */ | |
80b140af | 4480 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4481 | |
4482 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4483 | * L2-VNIs |
4484 | */ | |
d62a17ae | 4485 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4486 | (void (*)(struct hash_bucket *, |
d62a17ae | 4487 | void *))withdraw_router_id_vni, |
4488 | bgp); | |
5394a276 CS |
4489 | |
4490 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4491 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4492 | if (bgp_vrf->evpn_info->advertise_pip && | |
4493 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4494 | == INADDR_ANY)) | |
4495 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4496 | = INADDR_ANY; | |
4497 | } | |
4498 | } | |
676f83b9 | 4499 | } else { |
4500 | ||
5394a276 CS |
4501 | /* Assign new default instance router-id */ |
4502 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4503 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4504 | if (bgp_vrf->evpn_info->advertise_pip && | |
4505 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4506 | == INADDR_ANY)) { | |
4507 | bgp_vrf->evpn_info->pip_ip = | |
4508 | bgp->router_id; | |
4509 | /* advertise type-5 routes with | |
4510 | * new nexthop | |
4511 | */ | |
4512 | update_advertise_vrf_routes(bgp_vrf); | |
4513 | } | |
4514 | } | |
4515 | } | |
4516 | ||
676f83b9 | 4517 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4518 | * RD |
4519 | */ | |
80b140af | 4520 | update_router_id_vrf(bgp); |
676f83b9 | 4521 | |
4522 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4523 | * new RD |
4524 | */ | |
d62a17ae | 4525 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4526 | (void (*)(struct hash_bucket *, |
d62a17ae | 4527 | void *))update_router_id_vni, |
4528 | bgp); | |
676f83b9 | 4529 | } |
2d48ee25 | 4530 | } |
4531 | ||
bf1061d8 VB |
4532 | /* |
4533 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4534 | */ | |
4535 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4536 | { | |
4537 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4538 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4539 | void*))update_autort_vni, |
4540 | bgp); | |
4541 | } | |
4542 | ||
90e60aa7 | 4543 | /* |
4544 | * Handle change to export RT - update and advertise local routes. | |
4545 | */ | |
d62a17ae | 4546 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4547 | { |
d62a17ae | 4548 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4549 | } |
4550 | ||
996c9314 | 4551 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4552 | { |
4553 | if (withdraw) | |
4554 | delete_withdraw_vrf_routes(bgp_vrf); | |
4555 | else | |
4556 | update_advertise_vrf_routes(bgp_vrf); | |
4557 | } | |
4558 | ||
90e60aa7 | 4559 | /* |
4560 | * Handle change to RD. This is invoked twice by the change handler, | |
4561 | * first before the RD has been changed and then after the RD has | |
4562 | * been changed. The first invocation will result in local routes | |
4563 | * of this VNI being deleted and withdrawn and the next will result | |
4564 | * in the routes being re-advertised. | |
4565 | */ | |
d62a17ae | 4566 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4567 | int withdraw) | |
90e60aa7 | 4568 | { |
d62a17ae | 4569 | if (withdraw) |
4570 | delete_withdraw_vni_routes(bgp, vpn); | |
4571 | else | |
4572 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4573 | } |
4574 | ||
4575 | /* | |
4576 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4577 | */ | |
d62a17ae | 4578 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4579 | { |
d62a17ae | 4580 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4581 | } |
4582 | ||
4583 | /* | |
4584 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4585 | * to Import RT. | |
4586 | */ | |
d62a17ae | 4587 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4588 | { |
d62a17ae | 4589 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4590 | } |
4591 | ||
b16031a2 | 4592 | /* |
b57ba6d2 | 4593 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4594 | */ |
d7c0a89a | 4595 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4596 | int len) |
b16031a2 | 4597 | { |
b57ba6d2 | 4598 | vni_t vni1, vni2; |
b16031a2 | 4599 | |
b57ba6d2 MK |
4600 | vni1 = label2vni(label); |
4601 | if (num_labels == 2) { | |
996c9314 | 4602 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4603 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4604 | } else | |
4605 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4606 | return buf; |
b16031a2 | 4607 | } |
4608 | ||
9c92b5f7 MK |
4609 | /* |
4610 | * Function to convert evpn route to json format. | |
4611 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4612 | */ | |
bd494ec5 | 4613 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4614 | { |
b682f6de | 4615 | char buf1[ETHER_ADDR_STRLEN]; |
4616 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4617 | uint8_t family; |
4618 | uint8_t prefixlen; | |
9c92b5f7 | 4619 | |
b682f6de | 4620 | if (!json) |
4621 | return; | |
9c92b5f7 | 4622 | |
44c69747 LK |
4623 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4624 | ||
4625 | switch (p->prefix.route_type) { | |
4626 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4627 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4628 | p->prefix.macip_addr.eth_tag); |
4629 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4630 | json_object_string_add(json, "mac", | |
4631 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4632 | sizeof(buf1))); | |
4633 | ||
4634 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4635 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4636 | AF_INET6; | |
4637 | prefixlen = (family == AF_INET) ? | |
4638 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4639 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4640 | buf2, PREFIX2STR_BUFFER); | |
4641 | json_object_int_add(json, "ipLen", prefixlen); | |
4642 | json_object_string_add(json, "ip", buf2); | |
4643 | } | |
4644 | break; | |
dff8f48d | 4645 | |
44c69747 LK |
4646 | case BGP_EVPN_IMET_ROUTE: |
4647 | json_object_int_add(json, "ethTag", | |
4648 | p->prefix.imet_addr.eth_tag); | |
4649 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4650 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4651 | IPV6_MAX_BITLEN; | |
4652 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4653 | PREFIX2STR_BUFFER); | |
4654 | json_object_int_add(json, "ipLen", prefixlen); | |
4655 | json_object_string_add(json, "ip", buf2); | |
4656 | break; | |
dff8f48d | 4657 | |
44c69747 LK |
4658 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4659 | json_object_int_add(json, "ethTag", | |
4660 | p->prefix.prefix_addr.eth_tag); | |
4661 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4662 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4663 | buf2, sizeof(buf2)); | |
4664 | json_object_int_add(json, "ipLen", | |
4665 | p->prefix.prefix_addr.ip_prefix_length); | |
4666 | json_object_string_add(json, "ip", buf2); | |
4667 | break; | |
4668 | ||
4669 | default: | |
4670 | break; | |
dff8f48d | 4671 | } |
9c92b5f7 MK |
4672 | } |
4673 | ||
128ea8ab | 4674 | /* |
4675 | * Encode EVPN prefix in Update (MP_REACH) | |
4676 | */ | |
5f040085 DS |
4677 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4678 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4679 | uint32_t num_labels, struct attr *attr, |
4680 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4681 | { |
4682 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4683 | int len, ipa_len = 0; |
d62a17ae | 4684 | |
4685 | if (addpath_encode) | |
4686 | stream_putl(s, addpath_tx_id); | |
4687 | ||
4688 | /* Route type */ | |
4689 | stream_putc(s, evp->prefix.route_type); | |
4690 | ||
4691 | switch (evp->prefix.route_type) { | |
4692 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4693 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4694 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4695 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4696 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4697 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4698 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4699 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4700 | len += 3; | |
4701 | stream_putc(s, len); | |
996c9314 | 4702 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4703 | if (attr) |
c44ab6f1 | 4704 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4705 | else |
4706 | stream_put(s, 0, 10); | |
3714a385 | 4707 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4708 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4709 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4710 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4711 | if (ipa_len) /* IP */ | |
4712 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4713 | ipa_len); | |
b57ba6d2 MK |
4714 | /* 1st label is the L2 VNI */ |
4715 | stream_put(s, label, BGP_LABEL_BYTES); | |
4716 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4717 | if (ipa_len && num_labels > 1) | |
996c9314 | 4718 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4719 | break; |
4720 | ||
4721 | case BGP_EVPN_IMET_ROUTE: | |
4722 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4723 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4724 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4725 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4726 | /* Originating Router's IP Addr */ | |
3714a385 | 4727 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4728 | break; |
4729 | ||
50f74cf1 | 4730 | case BGP_EVPN_ES_ROUTE: |
4731 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4732 | stream_put(s, prd->val, 8); /* RD */ | |
4733 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4734 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4735 | /* VTEP IP */ |
4736 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4737 | break; |
4738 | ||
c44ab6f1 AK |
4739 | case BGP_EVPN_AD_ROUTE: |
4740 | /* RD, ESI, EthTag, 1 VNI */ | |
4741 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4742 | stream_putc(s, len); | |
4743 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4744 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4745 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4746 | stream_put(s, label, BGP_LABEL_BYTES); | |
4747 | break; | |
4748 | ||
d62a17ae | 4749 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4750 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4751 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4752 | break; |
4753 | ||
4754 | default: | |
4755 | break; | |
4756 | } | |
4757 | } | |
4758 | ||
4759 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4760 | struct bgp_nlri *packet, int withdraw) | |
4761 | { | |
d7c0a89a QY |
4762 | uint8_t *pnt; |
4763 | uint8_t *lim; | |
d62a17ae | 4764 | afi_t afi; |
4765 | safi_t safi; | |
d7c0a89a | 4766 | uint32_t addpath_id; |
d62a17ae | 4767 | int addpath_encoded; |
4768 | int psize = 0; | |
d7c0a89a | 4769 | uint8_t rtype; |
d62a17ae | 4770 | struct prefix p; |
4771 | ||
d62a17ae | 4772 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4773 | pnt = packet->nlri; | |
4774 | lim = pnt + packet->length; | |
4775 | afi = packet->afi; | |
4776 | safi = packet->safi; | |
4777 | addpath_id = 0; | |
4778 | ||
4779 | addpath_encoded = | |
4780 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4781 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4782 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4783 | ||
4784 | for (; pnt < lim; pnt += psize) { | |
4785 | /* Clear prefix structure. */ | |
4786 | memset(&p, 0, sizeof(struct prefix)); | |
4787 | ||
4788 | /* Deal with path-id if AddPath is supported. */ | |
4789 | if (addpath_encoded) { | |
4790 | /* When packet overflow occurs return immediately. */ | |
4791 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4792 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4793 | |
a3a850a1 S |
4794 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4795 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4796 | pnt += BGP_ADDPATH_ID_LEN; |
4797 | } | |
4798 | ||
4799 | /* All EVPN NLRI types start with type and length. */ | |
4800 | if (pnt + 2 > lim) | |
513386b5 | 4801 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4802 | |
4803 | rtype = *pnt++; | |
3f54c705 | 4804 | psize = *pnt++; |
d62a17ae | 4805 | |
4806 | /* When packet overflow occur return immediately. */ | |
4807 | if (pnt + psize > lim) | |
513386b5 | 4808 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4809 | |
4810 | switch (rtype) { | |
4811 | case BGP_EVPN_MAC_IP_ROUTE: | |
4812 | if (process_type2_route(peer, afi, safi, | |
4813 | withdraw ? NULL : attr, pnt, | |
4814 | psize, addpath_id)) { | |
af4c2728 | 4815 | flog_err( |
e50f7cfd | 4816 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4817 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4818 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4819 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4820 | } |
4821 | break; | |
4822 | ||
4823 | case BGP_EVPN_IMET_ROUTE: | |
4824 | if (process_type3_route(peer, afi, safi, | |
4825 | withdraw ? NULL : attr, pnt, | |
4826 | psize, addpath_id)) { | |
af4c2728 | 4827 | flog_err( |
e50f7cfd | 4828 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4829 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4830 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4831 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4832 | } |
4833 | break; | |
4834 | ||
50f74cf1 | 4835 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 4836 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 4837 | withdraw ? NULL : attr, pnt, |
4838 | psize, addpath_id)) { | |
af4c2728 | 4839 | flog_err( |
e50f7cfd | 4840 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4841 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4842 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4843 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4844 | } |
4845 | break; | |
4846 | ||
c44ab6f1 AK |
4847 | case BGP_EVPN_AD_ROUTE: |
4848 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
4849 | withdraw ? NULL : attr, pnt, | |
4850 | psize, addpath_id)) { | |
4851 | flog_err( | |
4852 | EC_BGP_PKT_PROCESS, | |
4853 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
4854 | peer->bgp->vrf_id, peer->host, psize); | |
4855 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
4856 | } | |
4857 | break; | |
4858 | ||
d62a17ae | 4859 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4860 | if (process_type5_route(peer, afi, safi, |
4861 | withdraw ? NULL : attr, pnt, | |
4862 | psize, addpath_id)) { | |
af4c2728 | 4863 | flog_err( |
e50f7cfd | 4864 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4865 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4866 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4867 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4868 | } |
4869 | break; | |
4870 | ||
4871 | default: | |
4872 | break; | |
4873 | } | |
4874 | } | |
4875 | ||
4876 | /* Packet length consistency check. */ | |
4877 | if (pnt != lim) | |
513386b5 | 4878 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 4879 | |
513386b5 | 4880 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 4881 | } |
4882 | ||
10ebe1ab MK |
4883 | /* |
4884 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4885 | * The mapping will be used during route processing. | |
4886 | * bgp_def: default bgp instance | |
4887 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4888 | */ | |
4889 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4890 | { | |
f6e07e1b | 4891 | uint32_t i = 0; |
10ebe1ab MK |
4892 | struct ecommunity_val *eval = NULL; |
4893 | struct listnode *node = NULL, *nnode = NULL; | |
4894 | struct ecommunity *ecom = NULL; | |
4895 | ||
4896 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4897 | for (i = 0; i < ecom->size; i++) { | |
4898 | eval = (struct ecommunity_val *)(ecom->val | |
4899 | + (i | |
4900 | * ECOMMUNITY_SIZE)); | |
4901 | map_vrf_to_rt(bgp_vrf, eval); | |
4902 | } | |
4903 | } | |
4904 | } | |
4905 | ||
4906 | /* | |
4907 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4908 | */ | |
4909 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4910 | { | |
f6e07e1b | 4911 | uint32_t i; |
10ebe1ab MK |
4912 | struct ecommunity_val *eval; |
4913 | struct listnode *node, *nnode; | |
4914 | struct ecommunity *ecom; | |
4915 | ||
4916 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4917 | for (i = 0; i < ecom->size; i++) { | |
4918 | struct vrf_irt_node *irt; | |
4919 | struct ecommunity_val eval_tmp; | |
4920 | ||
4921 | eval = (struct ecommunity_val *)(ecom->val | |
4922 | + (i | |
4923 | * ECOMMUNITY_SIZE)); | |
4924 | /* If using "automatic" RT, we only care about the | |
4925 | * local-admin sub-field. | |
4926 | * This is to facilitate using VNI as the RT for EBGP | |
4927 | * peering too. | |
4928 | */ | |
4929 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4930 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4931 | BGP_VRF_IMPORT_RT_CFGD)) | |
4932 | mask_ecom_global_admin(&eval_tmp, eval); | |
4933 | ||
4934 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4935 | if (irt) | |
4936 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4937 | } | |
4938 | } | |
4939 | } | |
4940 | ||
4941 | ||
128ea8ab | 4942 | /* |
4943 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4944 | * The mapping will be used during route processing. | |
4945 | */ | |
d62a17ae | 4946 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4947 | { |
f6e07e1b | 4948 | uint32_t i; |
d62a17ae | 4949 | struct ecommunity_val *eval; |
4950 | struct listnode *node, *nnode; | |
4951 | struct ecommunity *ecom; | |
128ea8ab | 4952 | |
d62a17ae | 4953 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4954 | for (i = 0; i < ecom->size; i++) { | |
4955 | eval = (struct ecommunity_val *)(ecom->val | |
4956 | + (i | |
4957 | * ECOMMUNITY_SIZE)); | |
4958 | map_vni_to_rt(bgp, vpn, eval); | |
4959 | } | |
4960 | } | |
128ea8ab | 4961 | } |
4962 | ||
4963 | /* | |
4964 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4965 | */ | |
d62a17ae | 4966 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4967 | { |
f6e07e1b | 4968 | uint32_t i; |
d62a17ae | 4969 | struct ecommunity_val *eval; |
4970 | struct listnode *node, *nnode; | |
4971 | struct ecommunity *ecom; | |
128ea8ab | 4972 | |
d62a17ae | 4973 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4974 | for (i = 0; i < ecom->size; i++) { | |
4975 | struct irt_node *irt; | |
4976 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4977 | |
d62a17ae | 4978 | eval = (struct ecommunity_val *)(ecom->val |
4979 | + (i | |
4980 | * ECOMMUNITY_SIZE)); | |
4981 | /* If using "automatic" RT, we only care about the | |
4982 | * local-admin sub-field. | |
4983 | * This is to facilitate using VNI as the RT for EBGP | |
4984 | * peering too. | |
4985 | */ | |
4986 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4987 | if (!is_import_rt_configured(vpn)) | |
4988 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4989 | |
d62a17ae | 4990 | irt = lookup_import_rt(bgp, &eval_tmp); |
4991 | if (irt) | |
4992 | unmap_vni_from_rt(bgp, vpn, irt); | |
4993 | } | |
4994 | } | |
128ea8ab | 4995 | } |
4996 | ||
4997 | /* | |
4998 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4999 | * The mapping will be used during route processing. | |
5000 | */ | |
d62a17ae | 5001 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5002 | { |
c581d8b0 | 5003 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5004 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5005 | |
d62a17ae | 5006 | /* Map RT to VNI */ |
5007 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5008 | } |
5009 | ||
5010 | /* | |
5011 | * Derive Export RT automatically for VNI. | |
5012 | */ | |
d62a17ae | 5013 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5014 | { |
c581d8b0 | 5015 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5016 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5017 | } |
5018 | ||
676f83b9 | 5019 | /* |
5020 | * Derive RD automatically for VNI using passed information - it | |
5021 | * is of the form RouterId:unique-id-for-vni. | |
5022 | */ | |
5023 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5024 | { | |
9e97ff03 CS |
5025 | if (is_vrf_rd_configured(bgp)) |
5026 | return; | |
5027 | ||
92708db6 | 5028 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5029 | } |
5030 | ||
128ea8ab | 5031 | /* |
5032 | * Derive RD automatically for VNI using passed information - it | |
5033 | * is of the form RouterId:unique-id-for-vni. | |
5034 | */ | |
d62a17ae | 5035 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5036 | { |
c44ab6f1 | 5037 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5038 | |
d62a17ae | 5039 | vpn->prd.family = AF_UNSPEC; |
5040 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5041 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5042 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5043 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5044 | } |
5045 | ||
7df407ed CS |
5046 | /* |
5047 | * Lookup L3-VNI | |
5048 | */ | |
5049 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5050 | { | |
5051 | struct list *inst = bm->bgp; | |
5052 | struct listnode *node; | |
5053 | struct bgp *bgp_vrf; | |
5054 | ||
5055 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5056 | if (bgp_vrf->l3vni == vni) | |
5057 | return true; | |
5058 | } | |
5059 | ||
5060 | return false; | |
5061 | } | |
5062 | ||
128ea8ab | 5063 | /* |
5064 | * Lookup VNI. | |
5065 | */ | |
d62a17ae | 5066 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5067 | { |
d62a17ae | 5068 | struct bgpevpn *vpn; |
5069 | struct bgpevpn tmp; | |
128ea8ab | 5070 | |
d62a17ae | 5071 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5072 | tmp.vni = vni; | |
5073 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5074 | return vpn; | |
128ea8ab | 5075 | } |
5076 | ||
5077 | /* | |
5078 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5079 | */ | |
d62a17ae | 5080 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5081 | struct in_addr originator_ip, |
5082 | vrf_id_t tenant_vrf_id, | |
5083 | struct in_addr mcast_grp) | |
128ea8ab | 5084 | { |
d62a17ae | 5085 | struct bgpevpn *vpn; |
128ea8ab | 5086 | |
d62a17ae | 5087 | if (!bgp) |
5088 | return NULL; | |
128ea8ab | 5089 | |
d62a17ae | 5090 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5091 | |
d62a17ae | 5092 | /* Set values - RD and RT set to defaults. */ |
5093 | vpn->vni = vni; | |
5094 | vpn->originator_ip = originator_ip; | |
29c53922 | 5095 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5096 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5097 | |
d62a17ae | 5098 | /* Initialize route-target import and export lists */ |
5099 | vpn->import_rtl = list_new(); | |
5100 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5101 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5102 | vpn->export_rtl = list_new(); |
5103 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5104 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5105 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5106 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5107 | |
d62a17ae | 5108 | /* Initialize EVPN route table. */ |
960035b2 | 5109 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5110 | |
d62a17ae | 5111 | /* Add to hash */ |
5112 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5113 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5114 | return NULL; | |
5115 | } | |
6a8657d0 MK |
5116 | |
5117 | /* add to l2vni list on corresponding vrf */ | |
5118 | bgpevpn_link_to_l3vni(vpn); | |
5119 | ||
c44ab6f1 AK |
5120 | bgp_evpn_vni_es_init(vpn); |
5121 | ||
d62a17ae | 5122 | QOBJ_REG(vpn, bgpevpn); |
5123 | return vpn; | |
128ea8ab | 5124 | } |
5125 | ||
5126 | /* | |
5127 | * Free a given VPN - called in multiple scenarios such as zebra | |
5128 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5129 | * This just frees appropriate memory, caller should have taken other | |
5130 | * needed actions. | |
5131 | */ | |
d62a17ae | 5132 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5133 | { |
c44ab6f1 | 5134 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5135 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5136 | bgp_table_unlock(vpn->route_table); |
5137 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5138 | list_delete(&vpn->import_rtl); |
5139 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5140 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5141 | hash_release(bgp->vnihash, vpn); |
5142 | QOBJ_UNREG(vpn); | |
5143 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5144 | } |
5145 | ||
50f74cf1 | 5146 | /* |
5147 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5148 | */ |
d62a17ae | 5149 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5150 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5151 | { |
40381db7 | 5152 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5153 | } |
5154 | ||
5155 | /* | |
50f74cf1 | 5156 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5157 | */ |
d62a17ae | 5158 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5159 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5160 | { |
40381db7 | 5161 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5162 | } |
5163 | ||
db0e1937 MK |
5164 | /* filter routes which have martian next hops */ |
5165 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5166 | { | |
0291c246 MK |
5167 | afi_t afi; |
5168 | safi_t safi; | |
9bcb3eef | 5169 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5170 | struct bgp_table *table; |
40381db7 | 5171 | struct bgp_path_info *pi; |
db0e1937 MK |
5172 | |
5173 | afi = AFI_L2VPN; | |
5174 | safi = SAFI_EVPN; | |
5175 | ||
5176 | /* Walk entire global routing table and evaluate routes which could be | |
5177 | * imported into this VPN. Note that we cannot just look at the routes | |
5178 | * for the VNI's RD - | |
5179 | * remote routes applicable for this VNI could have any RD. | |
5180 | */ | |
5181 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5182 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5183 | rd_dest = bgp_route_next(rd_dest)) { | |
5184 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5185 | if (!table) |
5186 | continue; | |
5187 | ||
9bcb3eef DS |
5188 | for (dest = bgp_table_top(table); dest; |
5189 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5190 | |
9bcb3eef | 5191 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5192 | pi = pi->next) { |
db0e1937 MK |
5193 | |
5194 | /* Consider "valid" remote routes applicable for | |
5195 | * this VNI. */ | |
40381db7 DS |
5196 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5197 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5198 | continue; |
9bcb3eef DS |
5199 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5200 | pi->sub_type, pi->attr, | |
5201 | dest)) { | |
b54892e0 | 5202 | const struct prefix *p = |
9bcb3eef | 5203 | bgp_dest_get_prefix(dest); |
db0e1937 | 5204 | |
b54892e0 DS |
5205 | if (bgp_debug_update(pi->peer, p, NULL, |
5206 | 1)) { | |
5207 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5208 | |
b54892e0 | 5209 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5210 | attr_str, |
5211 | sizeof(attr_str)); | |
db0e1937 | 5212 | |
db0e1937 | 5213 | zlog_debug( |
56ca3b5b | 5214 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5215 | bgp->vrf_id, dest, |
db0e1937 | 5216 | attr_str); |
b54892e0 | 5217 | } |
db0e1937 | 5218 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5219 | p, pi); |
db0e1937 | 5220 | |
9bcb3eef | 5221 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5222 | safi); |
db0e1937 | 5223 | } |
db0e1937 MK |
5224 | } |
5225 | } | |
5226 | } | |
5227 | ||
5228 | return 0; | |
5229 | } | |
5230 | ||
128ea8ab | 5231 | /* |
5232 | * Handle del of a local MACIP. | |
5233 | */ | |
d62a17ae | 5234 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5235 | struct ipaddr *ip, int state) |
128ea8ab | 5236 | { |
d62a17ae | 5237 | struct bgpevpn *vpn; |
5238 | struct prefix_evpn p; | |
9bcb3eef | 5239 | struct bgp_dest *dest; |
128ea8ab | 5240 | |
d62a17ae | 5241 | /* Lookup VNI hash - should exist. */ |
5242 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5243 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5244 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5245 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5246 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5247 | return -1; | |
5248 | } | |
128ea8ab | 5249 | |
d62a17ae | 5250 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5251 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5252 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5253 | delete_evpn_route(bgp, vpn, &p); | |
5254 | } else { | |
5255 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5256 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5257 | if (dest) | |
5258 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5259 | } |
128ea8ab | 5260 | |
d62a17ae | 5261 | return 0; |
128ea8ab | 5262 | } |
5263 | ||
5264 | /* | |
5265 | * Handle add of a local MACIP. | |
5266 | */ | |
d62a17ae | 5267 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5268 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5269 | { |
d62a17ae | 5270 | struct bgpevpn *vpn; |
5271 | struct prefix_evpn p; | |
128ea8ab | 5272 | |
d62a17ae | 5273 | /* Lookup VNI hash - should exist. */ |
5274 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5275 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5276 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5277 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5278 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5279 | return -1; | |
5280 | } | |
128ea8ab | 5281 | |
d62a17ae | 5282 | /* Create EVPN type-2 route and schedule for processing. */ |
5283 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5284 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 5285 | flog_err( |
e50f7cfd | 5286 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 5287 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 5288 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5289 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5290 | ? "sticky gateway" | |
5291 | : "", | |
c0d72166 | 5292 | mac, ip, flags); |
d62a17ae | 5293 | return -1; |
5294 | } | |
128ea8ab | 5295 | |
d62a17ae | 5296 | return 0; |
128ea8ab | 5297 | } |
5298 | ||
e3b78da8 | 5299 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5300 | struct bgp *bgp_vrf) |
5301 | { | |
e3b78da8 | 5302 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5303 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5304 | |
5e53dce3 T |
5305 | bgp_evpn = bgp_get_evpn(); |
5306 | assert(bgp_evpn); | |
6a8657d0 | 5307 | |
6a8657d0 MK |
5308 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5309 | bgpevpn_link_to_l3vni(vpn); | |
5310 | } | |
5311 | ||
14e814ea CS |
5312 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5313 | struct ethaddr *svi_rmac, | |
5314 | struct ethaddr *vrr_rmac, | |
0483af6e | 5315 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5316 | ifindex_t svi_ifindex, |
5317 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5318 | { |
5319 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5320 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5321 | struct listnode *node = NULL; |
5322 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5323 | as_t as = 0; |
5324 | ||
3621ebc5 | 5325 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5326 | * auto-creatio |
5327 | */ | |
5e53dce3 T |
5328 | bgp_evpn = bgp_get_evpn(); |
5329 | if (!bgp_evpn) { | |
af4c2728 | 5330 | flog_err( |
e50f7cfd | 5331 | EC_BGP_NO_DFLT, |
3621ebc5 | 5332 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5333 | l3vni); |
fe1dc5a3 MK |
5334 | return -1; |
5335 | } | |
5e53dce3 | 5336 | as = bgp_evpn->as; |
fe1dc5a3 | 5337 | |
0437e105 | 5338 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5339 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5340 | if (!bgp_vrf) { |
5341 | ||
5342 | int ret = 0; | |
5343 | ||
5d5393b9 DL |
5344 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5345 | vrf_id == VRF_DEFAULT | |
5346 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5347 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5348 | switch (ret) { |
fe1dc5a3 | 5349 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5350 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1d5453d6 | 5351 | "BGP is already running; AS is %u", as); |
fe1dc5a3 MK |
5352 | return -1; |
5353 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5354 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1d5453d6 | 5355 | "BGP instance name and AS number mismatch"); |
fe1dc5a3 MK |
5356 | return -1; |
5357 | } | |
5358 | ||
5359 | /* mark as auto created */ | |
5360 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5361 | } | |
5362 | ||
0483af6e | 5363 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5364 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5365 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5366 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5367 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5368 | |
14e814ea CS |
5369 | /* copy anycast MAC from VRR MAC */ |
5370 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5371 | /* copy sys RMAC from SVI MAC */ | |
5372 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5373 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5374 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5375 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5376 | ||
c0d72166 DS |
5377 | if (bgp_debug_zebra(NULL)) |
5378 | zlog_debug( | |
5379 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
5380 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
5381 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5382 | : "disable", | |
5383 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
5384 | &bgp_vrf->evpn_info->pip_rmac_static, | |
5385 | is_anycast_mac ? "Enable" : "Disable"); | |
5386 | ||
c48d9f5f | 5387 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5388 | if (filter) { |
c48d9f5f MK |
5389 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5390 | ||
10f70510 AD |
5391 | /* |
5392 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5393 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5394 | * that explicitly. | |
5395 | */ | |
5396 | } else { | |
5397 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5398 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5399 | ||
5400 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5401 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5402 | ||
5403 | /* | |
5404 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5405 | * flag, update all MACIP routes in this VNI | |
5406 | */ | |
5407 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5408 | update_all_type2_routes(bgp_evpn, vpn); | |
5409 | } | |
5410 | } | |
5411 | } | |
5412 | ||
530e8a6e | 5413 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5414 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5415 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5416 | else |
5417 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5418 | ||
c581d8b0 MK |
5419 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5420 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5421 | |
5422 | /* auto derive RD */ | |
676f83b9 | 5423 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5424 | |
6a8657d0 | 5425 | /* link all corresponding l2vnis */ |
5e53dce3 | 5426 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5427 | (void (*)(struct hash_bucket *, |
996c9314 | 5428 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5429 | bgp_vrf); |
5430 | ||
c48d9f5f MK |
5431 | /* Only update all corresponding type-2 routes if we are advertising two |
5432 | * labels along with type-2 routes | |
5433 | */ | |
5434 | if (!filter) | |
5435 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5436 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5437 | |
06d2e8f3 MK |
5438 | /* advertise type-5 routes if needed */ |
5439 | update_advertise_vrf_routes(bgp_vrf); | |
5440 | ||
5ba238b7 MK |
5441 | /* install all remote routes belonging to this l3vni into correspondng |
5442 | * vrf */ | |
5443 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5444 | |
5445 | return 0; | |
5446 | } | |
5447 | ||
996c9314 | 5448 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5449 | { |
5450 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5451 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5452 | struct listnode *node = NULL; |
18abc1eb | 5453 | struct listnode *next = NULL; |
f1f8b53c | 5454 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5455 | |
5456 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5457 | if (!bgp_vrf) { | |
af4c2728 | 5458 | flog_err( |
e50f7cfd | 5459 | EC_BGP_NO_DFLT, |
996c9314 LB |
5460 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5461 | l3vni); | |
fe1dc5a3 MK |
5462 | return -1; |
5463 | } | |
5464 | ||
5e53dce3 T |
5465 | bgp_evpn = bgp_get_evpn(); |
5466 | if (!bgp_evpn) { | |
af4c2728 | 5467 | flog_err( |
e50f7cfd | 5468 | EC_BGP_NO_DFLT, |
3621ebc5 | 5469 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5470 | l3vni); |
f1f8b53c MK |
5471 | return -1; |
5472 | } | |
5473 | ||
d846168d | 5474 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5475 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5476 | * routes. This will uninstalling the routes from zebra and decremnt the |
5477 | * bgp info count. | |
523cafc4 | 5478 | */ |
d846168d | 5479 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5480 | |
06d2e8f3 MK |
5481 | /* delete/withdraw all type-5 routes */ |
5482 | delete_withdraw_vrf_routes(bgp_vrf); | |
5483 | ||
fe1dc5a3 MK |
5484 | /* remove the l3vni from vrf instance */ |
5485 | bgp_vrf->l3vni = 0; | |
5486 | ||
5487 | /* remove the Rmac from the BGP vrf */ | |
5488 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5489 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5490 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5491 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5492 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5493 | |
530e8a6e | 5494 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5495 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5496 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5497 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5498 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5499 | } |
530e8a6e CS |
5500 | |
5501 | /* remove default export RT */ | |
5502 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5503 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5504 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5505 | } |
fe1dc5a3 | 5506 | |
f1f8b53c | 5507 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5508 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5509 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5510 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5511 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5512 | } |
5513 | } | |
fe1dc5a3 | 5514 | |
18abc1eb | 5515 | /* If any L2VNIs point to this instance, unlink them. */ |
5516 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5517 | bgpevpn_unlink_from_l3vni(vpn); | |
5518 | ||
ff9d54fb CS |
5519 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5520 | ||
fe1dc5a3 MK |
5521 | /* Delete the instance if it was autocreated */ |
5522 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5523 | bgp_delete(bgp_vrf); | |
5524 | ||
5525 | return 0; | |
5526 | } | |
5527 | ||
128ea8ab | 5528 | /* |
5529 | * Handle del of a local VNI. | |
5530 | */ | |
d62a17ae | 5531 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5532 | { |
d62a17ae | 5533 | struct bgpevpn *vpn; |
128ea8ab | 5534 | |
d62a17ae | 5535 | /* Locate VNI hash */ |
5536 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5537 | if (!vpn) { | |
1e00627b | 5538 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5539 | flog_warn( |
e50f7cfd | 5540 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5541 | "%u: VNI hash entry for VNI %u not found at DEL", |
5542 | bgp->vrf_id, vni); | |
d62a17ae | 5543 | return 0; |
5544 | } | |
128ea8ab | 5545 | |
d62a17ae | 5546 | /* Remove all local EVPN routes and schedule for processing (to |
5547 | * withdraw from peers). | |
5548 | */ | |
5549 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5550 | |
db0e1937 MK |
5551 | /* |
5552 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5553 | */ | |
5554 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5555 | ||
d62a17ae | 5556 | /* Clear "live" flag and see if hash needs to be freed. */ |
5557 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5558 | if (!is_vni_configured(vpn)) | |
5559 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5560 | |
d62a17ae | 5561 | return 0; |
128ea8ab | 5562 | } |
5563 | ||
5564 | /* | |
d1911c26 | 5565 | * Handle add (or update) of a local VNI. The VNI changes we care |
5566 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5567 | */ |
d62a17ae | 5568 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5569 | struct in_addr originator_ip, |
5570 | vrf_id_t tenant_vrf_id, | |
5571 | struct in_addr mcast_grp) | |
5572 | ||
d62a17ae | 5573 | { |
5574 | struct bgpevpn *vpn; | |
5575 | struct prefix_evpn p; | |
5576 | ||
d62a17ae | 5577 | /* Lookup VNI. If present and no change, exit. */ |
5578 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5579 | if (vpn) { |
29c53922 | 5580 | |
d1911c26 | 5581 | if (is_vni_live(vpn) |
5582 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5583 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5584 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5585 | /* Probably some other param has changed that we don't | |
5586 | * care about. */ | |
5587 | return 0; | |
5588 | ||
76d07c7a AK |
5589 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5590 | ||
d1911c26 | 5591 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5592 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5593 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5594 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5595 | bgpevpn_link_to_l3vni(vpn); |
5596 | } | |
29c53922 | 5597 | |
d1911c26 | 5598 | /* If tunnel endpoint IP has changed, update (and delete prior |
5599 | * type-3 route, if needed.) | |
5600 | */ | |
5601 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5602 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5603 | |
d1911c26 | 5604 | /* Update all routes with new endpoint IP and/or export RT |
5605 | * for VRFs | |
5606 | */ | |
5607 | if (is_vni_live(vpn)) | |
5608 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5609 | } |
5610 | ||
5611 | /* Create or update as appropriate. */ | |
5612 | if (!vpn) { | |
76d07c7a AK |
5613 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5614 | mcast_grp); | |
d62a17ae | 5615 | if (!vpn) { |
af4c2728 | 5616 | flog_err( |
e50f7cfd | 5617 | EC_BGP_VNI, |
d62a17ae | 5618 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5619 | bgp->vrf_id, vni); | |
5620 | return -1; | |
5621 | } | |
5622 | } | |
5623 | ||
db0e1937 | 5624 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5625 | if (is_vni_live(vpn)) |
5626 | return 0; | |
5627 | ||
d62a17ae | 5628 | /* Mark as "live" */ |
5629 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5630 | ||
db0e1937 MK |
5631 | /* tunnel is now active, add tunnel-ip to db */ |
5632 | bgp_tip_add(bgp, &originator_ip); | |
5633 | ||
5634 | /* filter routes as nexthop database has changed */ | |
5635 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5636 | ||
fd069644 DS |
5637 | /* |
5638 | * Create EVPN type-3 route and schedule for processing. | |
5639 | * | |
5640 | * RT-3 only if doing head-end replication | |
5641 | */ | |
833b8a50 AK |
5642 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5643 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5644 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5645 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5646 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5647 | "%u: Type3 route creation failure for VNI %u", | |
5648 | bgp->vrf_id, vni); | |
5649 | return -1; | |
5650 | } | |
d62a17ae | 5651 | } |
5652 | ||
5653 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5654 | * VNI, | |
5655 | * install them. | |
5656 | */ | |
5657 | install_routes_for_vni(bgp, vpn); | |
5658 | ||
d7d97010 MK |
5659 | /* If we are advertising gateway mac-ip |
5660 | It needs to be conveyed again to zebra */ | |
5661 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5662 | ||
df070e6f CS |
5663 | /* advertise svi mac-ip knob to zebra */ |
5664 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5665 | ||
d62a17ae | 5666 | return 0; |
b18825eb | 5667 | } |
14c1a7bf | 5668 | |
fd069644 DS |
5669 | /* |
5670 | * Handle change in setting for BUM handling. The supported values | |
5671 | * are head-end replication and dropping all BUM packets. Any change | |
5672 | * should be registered with zebra. Also, if doing head-end replication, | |
5673 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5674 | * to be dropped, the RT-3s must be withdrawn. | |
5675 | */ | |
5676 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5677 | { | |
5678 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5679 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5680 | "Flooding" : "Flooding Disabled"); | |
5681 | ||
5682 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5683 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5684 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5685 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5686 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5687 | } | |
5688 | ||
7724c0a1 | 5689 | /* |
5690 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5691 | * EVPN routes from peers. | |
5692 | */ | |
d62a17ae | 5693 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5694 | { |
e3b78da8 | 5695 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5696 | void *))cleanup_vni_on_disable, |
5697 | bgp); | |
7724c0a1 | 5698 | } |
5699 | ||
14c1a7bf | 5700 | /* |
5701 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5702 | * BGP instance (default) is being freed. | |
5703 | */ | |
d62a17ae | 5704 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5705 | { |
1525e99f | 5706 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5707 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5708 | bgp); |
5709 | ||
5710 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5711 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5712 | |
5713 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5714 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5715 | |
5716 | hash_free(bgp->vnihash); | |
d62a17ae | 5717 | bgp->vnihash = NULL; |
1525e99f | 5718 | |
6a154c88 DL |
5719 | list_delete(&bgp->vrf_import_rtl); |
5720 | list_delete(&bgp->vrf_export_rtl); | |
5721 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5722 | } |
5723 | ||
5724 | /* | |
5725 | * Initialization for EVPN | |
5726 | * Create | |
5727 | * VNI hash table | |
5728 | * hash for RT to VNI | |
14c1a7bf | 5729 | */ |
d62a17ae | 5730 | void bgp_evpn_init(struct bgp *bgp) |
5731 | { | |
5732 | bgp->vnihash = | |
5733 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
5734 | bgp->import_rt_hash = | |
5735 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5736 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5737 | bgp->vrf_import_rt_hash = |
5738 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5739 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5740 | bgp->vrf_import_rtl = list_new(); |
5741 | bgp->vrf_import_rtl->cmp = | |
5742 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5743 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5744 | bgp->vrf_export_rtl = list_new(); |
5745 | bgp->vrf_export_rtl->cmp = | |
5746 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5747 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5748 | bgp->l2vnis = list_new(); |
64465785 | 5749 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5750 | /* By default Duplicate Address Dection is enabled. |
5751 | * Max-moves (N) 5, detection time (M) 180 | |
5752 | * default action is warning-only | |
5753 | * freeze action permanently freezes address, | |
5754 | * and freeze time (auto-recovery) is disabled. | |
5755 | */ | |
5756 | if (bgp->evpn_info) { | |
5757 | bgp->evpn_info->dup_addr_detect = true; | |
5758 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5759 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5760 | bgp->evpn_info->dad_freeze = false; | |
5761 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5762 | /* Initialize zebra vxlan */ |
5763 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
5764 | /* Enable PIP feature by default for bgp vrf instance */ |
5765 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
5766 | struct bgp *bgp_default; | |
5767 | ||
5768 | bgp->evpn_info->advertise_pip = true; | |
5769 | bgp_default = bgp_get_default(); | |
5770 | if (bgp_default) | |
5771 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
5772 | } | |
85c8d83b | 5773 | } |
fd069644 DS |
5774 | |
5775 | /* Default BUM handling is to do head-end replication. */ | |
5776 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5777 | } |
10ebe1ab MK |
5778 | |
5779 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5780 | { | |
5781 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5782 | } | |
44c69747 LK |
5783 | |
5784 | /* | |
5785 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
5786 | */ | |
5f040085 | 5787 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
5788 | { |
5789 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5790 | ||
5791 | if (!pfx || pfx->family != AF_EVPN) | |
5792 | return 0; | |
5793 | ||
5794 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
5795 | return 0; | |
5796 | ||
5797 | return evp->prefix.prefix_addr.ip_prefix_length; | |
5798 | } | |
7c312383 AD |
5799 | |
5800 | /* | |
5801 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
5802 | */ | |
5a1ae2c2 | 5803 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
5804 | { |
5805 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5806 | ||
5807 | /* | |
e11329ca | 5808 | * EVPN routes should be marked as valid only if the nexthop is |
5809 | * reachable. Only if this happens, the route should be imported | |
5810 | * (into VNI or VRF routing tables) and/or advertised. | |
5811 | * Note: This is currently applied for EVPN type-2, type-3 and | |
5812 | * type-5 routes. It may be tweaked later on for other routes, or | |
5813 | * even removed completely when all routes are handled. | |
7c312383 AD |
5814 | */ |
5815 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 5816 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
5817 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
5818 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
5819 | return true; |
5820 | ||
5821 | return false; | |
5822 | } |