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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 | 33 | |
23d0a753 DA |
34 | #include "lib/printfrr.h" |
35 | ||
7ef5a232 PG |
36 | #include "bgpd/bgp_attr_evpn.h" |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 42 | #include "bgpd/bgp_label.h" |
7ef5a232 | 43 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 44 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 45 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 46 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 47 | #include "bgpd/bgp_encap_types.h" |
48 | #include "bgpd/bgp_debug.h" | |
14454c9f | 49 | #include "bgpd/bgp_errors.h" |
128ea8ab | 50 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 51 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 52 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 53 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 54 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 55 | #include "bgpd/bgp_vty.h" |
128ea8ab | 56 | |
57 | /* | |
58 | * Definitions and external declarations. | |
59 | */ | |
128ea8ab | 60 | DEFINE_QOBJ_TYPE(bgpevpn) |
c44ab6f1 | 61 | DEFINE_QOBJ_TYPE(bgp_evpn_es) |
128ea8ab | 62 | |
63 | ||
64 | /* | |
65 | * Static function declarations | |
66 | */ | |
d62a17ae | 67 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
9c7edc03 | 68 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
09319b4e DS |
69 | struct bgpevpn *vpn, |
70 | struct bgp_dest *dest, | |
71 | struct bgp_path_info *local_pi, | |
72 | const char *caller); | |
9c7edc03 | 73 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 74 | |
75 | /* | |
76 | * Private functions. | |
77 | */ | |
78 | ||
79 | /* | |
80 | * Make vni hash key. | |
81 | */ | |
d8b87afe | 82 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 83 | { |
d8b87afe | 84 | const struct bgpevpn *vpn = p; |
d62a17ae | 85 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 86 | } |
87 | ||
88 | /* | |
89 | * Comparison function for vni hash | |
90 | */ | |
74df8d6d | 91 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 92 | { |
d62a17ae | 93 | const struct bgpevpn *vpn1 = p1; |
94 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 95 | |
d62a17ae | 96 | if (!vpn1 && !vpn2) |
74df8d6d | 97 | return true; |
d62a17ae | 98 | if (!vpn1 || !vpn2) |
74df8d6d | 99 | return false; |
d62a17ae | 100 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 101 | } |
102 | ||
c44ab6f1 | 103 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
104 | { |
105 | const struct bgpevpn *vpn1 = p1; | |
106 | const struct bgpevpn *vpn2 = p2; | |
107 | ||
108 | return vpn1->vni - vpn2->vni; | |
109 | } | |
110 | ||
10ebe1ab MK |
111 | /* |
112 | * Make vrf import route target hash key. | |
113 | */ | |
d8b87afe | 114 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 115 | { |
d8b87afe QY |
116 | const struct vrf_irt_node *irt = p; |
117 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
118 | |
119 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
120 | } |
121 | ||
122 | /* | |
123 | * Comparison function for vrf import rt hash | |
124 | */ | |
74df8d6d | 125 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
126 | { |
127 | const struct vrf_irt_node *irt1 = p1; | |
128 | const struct vrf_irt_node *irt2 = p2; | |
129 | ||
130 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 131 | return true; |
10ebe1ab MK |
132 | |
133 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 134 | return false; |
10ebe1ab MK |
135 | |
136 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
137 | } | |
138 | ||
139 | /* | |
f9b8094e | 140 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
141 | */ |
142 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
143 | { | |
5e53dce3 | 144 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
145 | struct vrf_irt_node *irt; |
146 | ||
5e53dce3 T |
147 | bgp_evpn = bgp_get_evpn(); |
148 | if (!bgp_evpn) { | |
e50f7cfd | 149 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 150 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
151 | return NULL; |
152 | } | |
153 | ||
154 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
155 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
156 | |
157 | irt->rt = *rt; | |
158 | irt->vrfs = list_new(); | |
159 | ||
160 | /* Add to hash */ | |
5e53dce3 | 161 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
162 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
163 | return NULL; | |
164 | } | |
165 | ||
166 | return irt; | |
167 | } | |
168 | ||
169 | /* | |
170 | * Free the vrf import rt node | |
171 | */ | |
172 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
173 | { | |
5e53dce3 | 174 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 175 | |
5e53dce3 T |
176 | bgp_evpn = bgp_get_evpn(); |
177 | if (!bgp_evpn) { | |
e50f7cfd | 178 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 179 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
180 | return; |
181 | } | |
182 | ||
5e53dce3 | 183 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 184 | list_delete(&irt->vrfs); |
10ebe1ab MK |
185 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
186 | } | |
187 | ||
188 | /* | |
189 | * Function to lookup Import RT node - used to map a RT to set of | |
190 | * VNIs importing routes with that RT. | |
191 | */ | |
192 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
193 | { | |
5e53dce3 | 194 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
195 | struct vrf_irt_node *irt; |
196 | struct vrf_irt_node tmp; | |
197 | ||
5e53dce3 T |
198 | bgp_evpn = bgp_get_evpn(); |
199 | if (!bgp_evpn) { | |
f9b8094e T |
200 | flog_err( |
201 | EC_BGP_NO_DFLT, | |
202 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
203 | return NULL; |
204 | } | |
205 | ||
206 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
207 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 208 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
209 | return irt; |
210 | } | |
211 | ||
212 | /* | |
213 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
214 | */ | |
996c9314 | 215 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
216 | { |
217 | struct listnode *node = NULL, *nnode = NULL; | |
218 | struct bgp *tmp_bgp_vrf = NULL; | |
219 | ||
220 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
221 | if (tmp_bgp_vrf == bgp_vrf) | |
222 | return 1; | |
223 | } | |
224 | return 0; | |
225 | } | |
226 | ||
14c1a7bf | 227 | /* |
228 | * Make import route target hash key. | |
229 | */ | |
d8b87afe | 230 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 231 | { |
d8b87afe QY |
232 | const struct irt_node *irt = p; |
233 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
234 | |
235 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 236 | } |
237 | ||
238 | /* | |
239 | * Comparison function for import rt hash | |
240 | */ | |
74df8d6d | 241 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 242 | { |
d62a17ae | 243 | const struct irt_node *irt1 = p1; |
244 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 245 | |
d62a17ae | 246 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 247 | return true; |
14c1a7bf | 248 | |
d62a17ae | 249 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 250 | return false; |
14c1a7bf | 251 | |
d62a17ae | 252 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 253 | } |
254 | ||
7724c0a1 | 255 | /* |
128ea8ab | 256 | * Create a new import_rt |
257 | */ | |
d62a17ae | 258 | static struct irt_node *import_rt_new(struct bgp *bgp, |
259 | struct ecommunity_val *rt) | |
128ea8ab | 260 | { |
d62a17ae | 261 | struct irt_node *irt; |
128ea8ab | 262 | |
d62a17ae | 263 | if (!bgp) |
264 | return NULL; | |
128ea8ab | 265 | |
d62a17ae | 266 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 267 | |
d62a17ae | 268 | irt->rt = *rt; |
269 | irt->vnis = list_new(); | |
128ea8ab | 270 | |
d62a17ae | 271 | /* Add to hash */ |
272 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
273 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
274 | return NULL; | |
275 | } | |
128ea8ab | 276 | |
d62a17ae | 277 | return irt; |
128ea8ab | 278 | } |
279 | ||
280 | /* | |
281 | * Free the import rt node | |
7724c0a1 | 282 | */ |
d62a17ae | 283 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 284 | { |
d62a17ae | 285 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 286 | list_delete(&irt->vnis); |
d62a17ae | 287 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 288 | } |
289 | ||
14c1a7bf | 290 | /* |
128ea8ab | 291 | * Function to lookup Import RT node - used to map a RT to set of |
292 | * VNIs importing routes with that RT. | |
293 | */ | |
d62a17ae | 294 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
295 | struct ecommunity_val *rt) | |
128ea8ab | 296 | { |
d62a17ae | 297 | struct irt_node *irt; |
298 | struct irt_node tmp; | |
128ea8ab | 299 | |
d62a17ae | 300 | memset(&tmp, 0, sizeof(struct irt_node)); |
301 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
302 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
303 | return irt; | |
128ea8ab | 304 | } |
305 | ||
306 | /* | |
307 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
308 | */ | |
d62a17ae | 309 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 310 | { |
d62a17ae | 311 | struct listnode *node, *nnode; |
312 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 313 | |
d62a17ae | 314 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
315 | if (tmp_vpn == vpn) | |
316 | return 1; | |
317 | } | |
128ea8ab | 318 | |
d62a17ae | 319 | return 0; |
128ea8ab | 320 | } |
321 | ||
322 | /* | |
323 | * Compare Route Targets. | |
324 | */ | |
d62a17ae | 325 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
326 | struct ecommunity *ecom2) | |
128ea8ab | 327 | { |
d62a17ae | 328 | if (ecom1 && !ecom2) |
329 | return -1; | |
128ea8ab | 330 | |
d62a17ae | 331 | if (!ecom1 && ecom2) |
332 | return 1; | |
128ea8ab | 333 | |
d62a17ae | 334 | if (!ecom1 && !ecom2) |
335 | return 0; | |
128ea8ab | 336 | |
d62a17ae | 337 | if (ecom1->str && !ecom2->str) |
338 | return -1; | |
128ea8ab | 339 | |
d62a17ae | 340 | if (!ecom1->str && ecom2->str) |
341 | return 1; | |
128ea8ab | 342 | |
d62a17ae | 343 | if (!ecom1->str && !ecom2->str) |
344 | return 0; | |
128ea8ab | 345 | |
d62a17ae | 346 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 347 | } |
348 | ||
987d8198 DS |
349 | static void evpn_xxport_delete_ecomm(void *val) |
350 | { | |
351 | struct ecommunity *ecomm = val; | |
352 | ecommunity_free(&ecomm); | |
353 | } | |
354 | ||
128ea8ab | 355 | /* |
356 | * Mask off global-admin field of specified extended community (RT), | |
357 | * just retain the local-admin field. | |
358 | */ | |
d62a17ae | 359 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
360 | struct ecommunity_val *src) | |
128ea8ab | 361 | { |
d7c0a89a | 362 | uint8_t type; |
128ea8ab | 363 | |
d62a17ae | 364 | type = src->val[0]; |
365 | dst->val[0] = 0; | |
366 | if (type == ECOMMUNITY_ENCODE_AS) { | |
367 | dst->val[2] = dst->val[3] = 0; | |
368 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
369 | || type == ECOMMUNITY_ENCODE_IP) { | |
370 | dst->val[2] = dst->val[3] = 0; | |
371 | dst->val[4] = dst->val[5] = 0; | |
372 | } | |
128ea8ab | 373 | } |
374 | ||
10ebe1ab MK |
375 | /* |
376 | * Map one RT to specified VRF. | |
377 | * bgp_vrf = BGP vrf instance | |
378 | */ | |
996c9314 | 379 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
380 | { |
381 | struct vrf_irt_node *irt = NULL; | |
382 | struct ecommunity_val eval_tmp; | |
383 | ||
384 | /* If using "automatic" RT, | |
385 | * we only care about the local-admin sub-field. | |
386 | * This is to facilitate using L3VNI(VRF-VNI) | |
387 | * as the RT for EBGP peering too. | |
388 | */ | |
389 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 390 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
391 | mask_ecom_global_admin(&eval_tmp, eval); |
392 | ||
393 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
394 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
395 | /* Already mapped. */ | |
396 | return; | |
10ebe1ab | 397 | |
e066d6d0 | 398 | if (!irt) |
10ebe1ab | 399 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
400 | |
401 | /* Add VRF to the list for this RT. */ | |
402 | listnode_add(irt->vrfs, bgp_vrf); | |
403 | } | |
404 | ||
405 | /* | |
406 | * Unmap specified VRF from specified RT. If there are no other | |
407 | * VRFs for this RT, then the RT hash is deleted. | |
408 | * bgp_vrf: BGP VRF specific instance | |
409 | */ | |
996c9314 | 410 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
411 | { |
412 | /* Delete VRF from list for this RT. */ | |
413 | listnode_delete(irt->vrfs, bgp_vrf); | |
414 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
415 | vrf_import_rt_free(irt); |
416 | } | |
417 | } | |
418 | ||
128ea8ab | 419 | /* |
420 | * Map one RT to specified VNI. | |
14c1a7bf | 421 | */ |
d62a17ae | 422 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
423 | struct ecommunity_val *eval) | |
128ea8ab | 424 | { |
d62a17ae | 425 | struct irt_node *irt; |
426 | struct ecommunity_val eval_tmp; | |
128ea8ab | 427 | |
d62a17ae | 428 | /* If using "automatic" RT, we only care about the local-admin |
429 | * sub-field. | |
430 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
431 | */ | |
432 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
433 | if (!is_import_rt_configured(vpn)) | |
434 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 435 | |
d62a17ae | 436 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 437 | if (irt) |
d62a17ae | 438 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
439 | /* Already mapped. */ | |
440 | return; | |
128ea8ab | 441 | |
d62a17ae | 442 | if (!irt) { |
443 | irt = import_rt_new(bgp, &eval_tmp); | |
444 | assert(irt); | |
445 | } | |
128ea8ab | 446 | |
d62a17ae | 447 | /* Add VNI to the hash list for this RT. */ |
448 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 449 | } |
450 | ||
451 | /* | |
452 | * Unmap specified VNI from specified RT. If there are no other | |
453 | * VNIs for this RT, then the RT hash is deleted. | |
454 | */ | |
d62a17ae | 455 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
456 | struct irt_node *irt) | |
14c1a7bf | 457 | { |
d62a17ae | 458 | /* Delete VNI from hash list for this RT. */ |
459 | listnode_delete(irt->vnis, vpn); | |
460 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 461 | import_rt_free(bgp, irt); |
462 | } | |
14c1a7bf | 463 | } |
464 | ||
0ca10580 | 465 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 466 | const struct prefix_evpn *p, |
0ca10580 CS |
467 | struct attr *attr, uint8_t flags) |
468 | { | |
469 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
470 | ||
471 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
472 | if (!bgp_vrf) | |
473 | return; | |
474 | ||
b96cafa3 CS |
475 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
476 | return; | |
477 | ||
478 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
479 | * in case of route is self MAC-IP, | |
480 | * advertise-pip and advertise-svi-ip features | |
481 | * are enabled. | |
482 | * Otherwise, for all host MAC-IP route's | |
27727001 | 483 | * copy anycast RMAC. |
b96cafa3 CS |
484 | */ |
485 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
486 | && bgp_vrf->evpn_info->advertise_pip && | |
487 | bgp_vrf->evpn_info->is_anycast_mac) { | |
488 | /* copy sys rmac */ | |
489 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
490 | ETH_ALEN); | |
491 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
492 | attr->mp_nexthop_global_in = | |
493 | bgp_vrf->evpn_info->pip_ip; | |
494 | } else | |
495 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 496 | } |
b96cafa3 | 497 | |
128ea8ab | 498 | /* |
499 | * Create RT extended community automatically from passed information: | |
500 | * of the form AS:VNI. | |
501 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
502 | * the need is to get a RT value that will be unique across different | |
503 | * VNIs but the same across routers (in the same AS) for a particular | |
504 | * VNI. | |
505 | */ | |
c581d8b0 | 506 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 507 | { |
d62a17ae | 508 | struct ecommunity_val eval; |
b90d4580 CS |
509 | struct ecommunity *ecomadd, *ecom; |
510 | bool ecom_found = false; | |
511 | struct listnode *node; | |
128ea8ab | 512 | |
bf1061d8 VB |
513 | if (bgp->advertise_autort_rfc8365) |
514 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 515 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 516 | |
d62a17ae | 517 | ecomadd = ecommunity_new(); |
1207a5bc | 518 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
519 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
520 | if (ecommunity_cmp(ecomadd, ecom)) | |
521 | ecom_found = true; | |
522 | ||
523 | if (!ecom_found) | |
524 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
525 | else |
526 | ecommunity_free(&ecomadd); | |
128ea8ab | 527 | } |
14c1a7bf | 528 | |
529 | /* | |
128ea8ab | 530 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
531 | * creation of a VNI. | |
532 | */ | |
d62a17ae | 533 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 534 | { |
d62a17ae | 535 | bgp_evpn_derive_auto_rd(bgp, vpn); |
536 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
537 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 538 | } |
539 | ||
1ec31309 | 540 | /* |
541 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
542 | */ | |
543 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
544 | { | |
545 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
546 | return; | |
547 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
548 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
549 | } | |
550 | ||
09319b4e DS |
551 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
552 | safi_t safi, | |
553 | const struct prefix_evpn *evp, | |
554 | struct prefix_rd *prd) | |
c44ab6f1 AK |
555 | { |
556 | struct prefix_evpn global_p; | |
557 | ||
558 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
559 | /* prefix in the global table doesn't include the VTEP-IP so | |
560 | * we need to create a different copy of the prefix | |
561 | */ | |
562 | evpn_type1_prefix_global_copy(&global_p, evp); | |
563 | evp = &global_p; | |
564 | } | |
565 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
566 | } | |
567 | ||
09319b4e DS |
568 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
569 | safi_t safi, | |
570 | const struct prefix_evpn *evp, | |
571 | struct prefix_rd *prd) | |
c44ab6f1 AK |
572 | { |
573 | struct prefix_evpn global_p; | |
574 | ||
575 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
576 | /* prefix in the global table doesn't include the VTEP-IP so | |
577 | * we need to create a different copy of the prefix | |
578 | */ | |
579 | evpn_type1_prefix_global_copy(&global_p, evp); | |
580 | evp = &global_p; | |
581 | } | |
582 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
583 | } | |
584 | ||
128ea8ab | 585 | /* |
586 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 587 | */ |
d62a17ae | 588 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 589 | const struct prefix_evpn *p, |
d62a17ae | 590 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 591 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 592 | { |
593 | struct stream *s; | |
594 | int ipa_len; | |
595 | char buf1[ETHER_ADDR_STRLEN]; | |
596 | char buf2[INET6_ADDRSTRLEN]; | |
597 | char buf3[INET6_ADDRSTRLEN]; | |
c44ab6f1 | 598 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 599 | |
600 | /* Check socket. */ | |
601 | if (!zclient || zclient->sock < 0) | |
602 | return 0; | |
603 | ||
604 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
605 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
606 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
607 | zlog_debug( |
608 | "%s: No zebra instance to talk to, not installing remote macip", | |
609 | __func__); | |
d62a17ae | 610 | return 0; |
bb4ef1ae | 611 | } |
c44ab6f1 AK |
612 | |
613 | if (!esi) | |
614 | esi = zero_esi; | |
d62a17ae | 615 | s = zclient->obuf; |
616 | stream_reset(s); | |
617 | ||
996c9314 LB |
618 | zclient_create_header( |
619 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
620 | bgp->vrf_id); | |
d62a17ae | 621 | stream_putl(s, vpn->vni); |
3714a385 | 622 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 623 | /* IP address length and IP address, if any. */ |
3714a385 | 624 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 625 | stream_putl(s, 0); |
626 | else { | |
3714a385 | 627 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 628 | : IPV6_MAX_BYTELEN; |
629 | stream_putl(s, ipa_len); | |
3714a385 | 630 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 631 | } |
9c7edc03 AK |
632 | /* If the ESI is valid that becomes the nexthop; tape out the |
633 | * VTEP-IP for that case | |
c44ab6f1 | 634 | */ |
9c7edc03 | 635 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 636 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
637 | else |
638 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 639 | |
ead40654 | 640 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 641 | /* Also TX the sequence number of the best route. */ |
642 | if (add) { | |
ead40654 | 643 | stream_putc(s, flags); |
f07e1c99 | 644 | stream_putl(s, seq); |
c44ab6f1 | 645 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 646 | } |
d62a17ae | 647 | |
648 | stream_putw_at(s, 0, stream_get_endp(s)); | |
649 | ||
650 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 651 | zlog_debug( |
f07e1c99 | 652 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 653 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 654 | prefix_mac2str(&p->prefix.macip_addr.mac, |
655 | buf1, sizeof(buf1)), | |
656 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 657 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
658 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
659 | sizeof(buf2))); | |
d62a17ae | 660 | |
661 | return zclient_send_message(zclient); | |
7ef5a232 | 662 | } |
b18825eb | 663 | |
128ea8ab | 664 | /* |
665 | * Add (update) or delete remote VTEP from zebra. | |
666 | */ | |
d62a17ae | 667 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
668 | const struct prefix_evpn *p, |
669 | int flood_control, int add) | |
128ea8ab | 670 | { |
d62a17ae | 671 | struct stream *s; |
128ea8ab | 672 | |
d62a17ae | 673 | /* Check socket. */ |
674 | if (!zclient || zclient->sock < 0) | |
675 | return 0; | |
128ea8ab | 676 | |
d62a17ae | 677 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
678 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
679 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
680 | zlog_debug( |
681 | "%s: No zebra instance to talk to, not installing remote vtep", | |
682 | __func__); | |
d62a17ae | 683 | return 0; |
bb4ef1ae | 684 | } |
128ea8ab | 685 | |
d62a17ae | 686 | s = zclient->obuf; |
687 | stream_reset(s); | |
128ea8ab | 688 | |
996c9314 LB |
689 | zclient_create_header( |
690 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
691 | bgp->vrf_id); | |
d62a17ae | 692 | stream_putl(s, vpn->vni); |
3714a385 | 693 | if (is_evpn_prefix_ipaddr_v4(p)) |
694 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
695 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 696 | flog_err( |
e50f7cfd | 697 | EC_BGP_VTEP_INVALID, |
d62a17ae | 698 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
699 | add ? "ADD" : "DEL", vpn->vni); | |
700 | return -1; | |
701 | } | |
b16dd019 | 702 | stream_putl(s, flood_control); |
128ea8ab | 703 | |
d62a17ae | 704 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 705 | |
d62a17ae | 706 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 707 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 708 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 709 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 710 | |
d62a17ae | 711 | return zclient_send_message(zclient); |
128ea8ab | 712 | } |
713 | ||
342dd0c6 | 714 | /* |
715 | * Build extended communities for EVPN prefix route. | |
716 | */ | |
717 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
718 | struct attr *attr) | |
719 | { | |
720 | struct ecommunity ecom_encap; | |
342dd0c6 | 721 | struct ecommunity_val eval; |
722 | struct ecommunity_val eval_rmac; | |
723 | bgp_encap_types tnl_type; | |
724 | struct listnode *node, *nnode; | |
725 | struct ecommunity *ecom; | |
fab92da7 | 726 | struct ecommunity *old_ecom; |
342dd0c6 | 727 | struct list *vrf_export_rtl = NULL; |
728 | ||
729 | /* Encap */ | |
730 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
731 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
732 | encode_encap_extcomm(tnl_type, &eval); | |
733 | ecom_encap.size = 1; | |
34540b0d | 734 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 735 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 736 | |
737 | /* Add Encap */ | |
fab92da7 | 738 | if (attr->ecommunity) { |
739 | old_ecom = attr->ecommunity; | |
740 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
741 | if (!old_ecom->refcnt) | |
742 | ecommunity_free(&old_ecom); | |
743 | } else | |
744 | ecom = ecommunity_dup(&ecom_encap); | |
745 | attr->ecommunity = ecom; | |
342dd0c6 | 746 | |
747 | /* Add the export RTs for L3VNI/VRF */ | |
748 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
749 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
750 | attr->ecommunity = | |
751 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 752 | |
753 | /* add the router mac extended community */ | |
754 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 755 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 756 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 757 | } |
758 | ||
759 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
760 | } | |
761 | ||
128ea8ab | 762 | /* |
1ec31309 | 763 | * Build extended communities for EVPN route. |
764 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
765 | * and ENCAP extended communities are applicable for all routes. | |
766 | * The default gateway extended community and MAC mobility (sticky) extended | |
767 | * community are added as needed based on passed settings - only for type-2 | |
768 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
769 | * added, if present, based on passed settings - only for non-link-local | |
770 | * type-2 routes. | |
128ea8ab | 771 | */ |
7ec156a9 | 772 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 773 | int add_l3_ecomm) |
128ea8ab | 774 | { |
d62a17ae | 775 | struct ecommunity ecom_encap; |
776 | struct ecommunity ecom_sticky; | |
ead40654 | 777 | struct ecommunity ecom_default_gw; |
68e33151 | 778 | struct ecommunity ecom_na; |
d62a17ae | 779 | struct ecommunity_val eval; |
780 | struct ecommunity_val eval_sticky; | |
ead40654 | 781 | struct ecommunity_val eval_default_gw; |
bc59a672 | 782 | struct ecommunity_val eval_rmac; |
68e33151 | 783 | struct ecommunity_val eval_na; |
9c7edc03 | 784 | bool proxy; |
68e33151 | 785 | |
d62a17ae | 786 | bgp_encap_types tnl_type; |
787 | struct listnode *node, *nnode; | |
788 | struct ecommunity *ecom; | |
d7c0a89a | 789 | uint32_t seqnum; |
7a3e76f1 | 790 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 791 | |
d62a17ae | 792 | /* Encap */ |
793 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
794 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
795 | encode_encap_extcomm(tnl_type, &eval); | |
796 | ecom_encap.size = 1; | |
34540b0d | 797 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 798 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 799 | |
d62a17ae | 800 | /* Add Encap */ |
801 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 802 | |
7a3e76f1 | 803 | /* Add the export RTs for L2VNI */ |
d62a17ae | 804 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
805 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 806 | |
1ec31309 | 807 | /* Add the export RTs for L3VNI if told to - caller determines |
808 | * when this should be done. | |
523cafc4 | 809 | */ |
1ec31309 | 810 | if (add_l3_ecomm) { |
7ec156a9 MK |
811 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
812 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
813 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
814 | ecom)) | |
996c9314 LB |
815 | attr->ecommunity = ecommunity_merge( |
816 | attr->ecommunity, ecom); | |
7ec156a9 | 817 | } |
f1f8b53c | 818 | } |
7a3e76f1 | 819 | |
1ec31309 | 820 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 821 | if (attr->sticky) { |
822 | seqnum = 0; | |
823 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
824 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
825 | ecom_sticky.size = 1; | |
34540b0d | 826 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 827 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 828 | attr->ecommunity = |
829 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
830 | } | |
c85c03c7 | 831 | |
1ec31309 | 832 | /* Add RMAC, if told to. */ |
833 | if (add_l3_ecomm) { | |
bc59a672 | 834 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 835 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
836 | } |
837 | ||
1ec31309 | 838 | /* Add default gateway, if needed. */ |
ead40654 MK |
839 | if (attr->default_gw) { |
840 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
841 | encode_default_gw_extcomm(&eval_default_gw); | |
842 | ecom_default_gw.size = 1; | |
34540b0d | 843 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 844 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
996c9314 LB |
845 | attr->ecommunity = |
846 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
847 | } |
848 | ||
9c7edc03 AK |
849 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
850 | if (attr->router_flag || proxy) { | |
68e33151 | 851 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 852 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 853 | ecom_na.size = 1; |
34540b0d | 854 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 CS |
855 | ecom_na.val = (uint8_t *)eval_na.val; |
856 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
857 | &ecom_na); | |
858 | } | |
859 | ||
d62a17ae | 860 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 861 | } |
862 | ||
863 | /* | |
864 | * Add MAC mobility extended community to attribute. | |
865 | */ | |
d7c0a89a | 866 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 867 | { |
868 | struct ecommunity ecom_tmp; | |
869 | struct ecommunity_val eval; | |
d7c0a89a | 870 | uint8_t *ecom_val_ptr; |
d62a17ae | 871 | int i; |
d7c0a89a | 872 | uint8_t *pnt; |
d62a17ae | 873 | int type = 0; |
874 | int sub_type = 0; | |
875 | ||
876 | /* Build MM */ | |
877 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
878 | ||
879 | /* Find current MM ecommunity */ | |
421bb26a | 880 | ecom_val_ptr = NULL; |
d62a17ae | 881 | |
882 | if (attr->ecommunity) { | |
883 | for (i = 0; i < attr->ecommunity->size; i++) { | |
4371bf91 PG |
884 | pnt = attr->ecommunity->val + |
885 | (i * attr->ecommunity->unit_size); | |
d62a17ae | 886 | type = *pnt++; |
887 | sub_type = *pnt++; | |
888 | ||
889 | if (type == ECOMMUNITY_ENCODE_EVPN | |
890 | && sub_type | |
891 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 892 | ecom_val_ptr = |
4371bf91 PG |
893 | (attr->ecommunity->val + |
894 | (i * attr->ecommunity->unit_size)); | |
d62a17ae | 895 | break; |
896 | } | |
897 | } | |
898 | } | |
899 | ||
900 | /* Update the existing MM ecommunity */ | |
421bb26a | 901 | if (ecom_val_ptr) { |
4371bf91 PG |
902 | memcpy(ecom_val_ptr, eval.val, sizeof(char) |
903 | * attr->ecommunity->unit_size); | |
d62a17ae | 904 | } |
905 | /* Add MM to existing */ | |
906 | else { | |
907 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
908 | ecom_tmp.size = 1; | |
34540b0d | 909 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 910 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 911 | |
f9a78910 DS |
912 | if (attr->ecommunity) |
913 | attr->ecommunity = | |
914 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
915 | else | |
916 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 917 | } |
128ea8ab | 918 | } |
919 | ||
920 | /* Install EVPN route into zebra. */ | |
d62a17ae | 921 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
922 | const struct prefix_evpn *p, |
923 | struct bgp_path_info *pi) | |
128ea8ab | 924 | { |
d62a17ae | 925 | int ret; |
d594a14c | 926 | uint8_t flags; |
b16dd019 | 927 | int flood_control; |
9c7edc03 | 928 | uint32_t seq; |
128ea8ab | 929 | |
d594a14c AK |
930 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
931 | flags = 0; | |
9c7edc03 AK |
932 | |
933 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
934 | if (pi->attr->sticky) | |
935 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
936 | if (pi->attr->default_gw) | |
937 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
938 | if (is_evpn_prefix_ipaddr_v6(p) && | |
939 | pi->attr->router_flag) | |
940 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
941 | ||
942 | seq = mac_mobility_seqnum(pi->attr); | |
943 | /* if local ES notify zebra that this is a sync path */ | |
944 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
945 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
946 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
947 | SET_FLAG(flags, | |
948 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
949 | } | |
950 | } else { | |
951 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
952 | return 0; | |
953 | ||
954 | /* if a local path is being turned around and sent | |
955 | * to zebra it is because it is a sync path on | |
956 | * a local ES | |
957 | */ | |
958 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
959 | /* supply the highest peer seq number to zebra | |
960 | * for MM seq syncing | |
961 | */ | |
962 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
963 | /* if any of the paths from the peer have the ROUTER | |
964 | * flag set install the local entry as a router entry | |
965 | */ | |
966 | if (is_evpn_prefix_ipaddr_v6(p) && | |
967 | (pi->attr->es_flags & | |
968 | ATTR_ES_PEER_ROUTER)) | |
969 | SET_FLAG(flags, | |
970 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
971 | ||
972 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
973 | SET_FLAG(flags, | |
974 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
975 | } | |
976 | ||
d594a14c | 977 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
978 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
979 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
980 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
981 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 982 | } else { |
b16dd019 AK |
983 | switch (pi->attr->pmsi_tnl_type) { |
984 | case PMSI_TNLTYPE_INGR_REPL: | |
985 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
986 | break; | |
987 | ||
988 | case PMSI_TNLTYPE_PIM_SM: | |
989 | flood_control = VXLAN_FLOOD_PIM_SM; | |
990 | break; | |
991 | ||
992 | default: | |
993 | flood_control = VXLAN_FLOOD_DISABLED; | |
994 | break; | |
995 | } | |
996 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 997 | } |
128ea8ab | 998 | |
d62a17ae | 999 | return ret; |
128ea8ab | 1000 | } |
1001 | ||
1002 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1003 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1004 | const struct prefix_evpn *p, |
d62a17ae | 1005 | struct in_addr remote_vtep_ip) |
128ea8ab | 1006 | { |
d62a17ae | 1007 | int ret; |
128ea8ab | 1008 | |
d62a17ae | 1009 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1010 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1011 | 0, 0, 0, NULL); |
1012 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1013 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1014 | else |
b16dd019 AK |
1015 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1016 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1017 | |
d62a17ae | 1018 | return ret; |
128ea8ab | 1019 | } |
1020 | ||
1021 | /* | |
1022 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1023 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1024 | * from peers. | |
1025 | */ | |
d62a17ae | 1026 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1027 | struct bgp_dest *dest, |
9c7edc03 AK |
1028 | struct bgp_path_info *old_local, |
1029 | struct bgp_path_info *new_select) | |
128ea8ab | 1030 | { |
9bcb3eef | 1031 | struct bgp_dest *global_dest; |
40381db7 | 1032 | struct bgp_path_info *pi; |
d62a17ae | 1033 | afi_t afi = AFI_L2VPN; |
1034 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1035 | |
9c7edc03 AK |
1036 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
1037 | char prefix_buf[PREFIX_STRLEN]; | |
1038 | char esi_buf[ESI_STR_LEN]; | |
1039 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1040 | struct prefix_evpn *evp = |
1041 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1042 | |
1043 | zlog_debug("local path deleted %s es %s; new-path-es %s", | |
1044 | prefix2str(evp, | |
1045 | prefix_buf, sizeof(prefix_buf)), | |
1046 | esi_to_str(&old_local->attr->esi, | |
1047 | esi_buf, sizeof(esi_buf)), | |
1048 | new_select ? esi_to_str(&new_select->attr->esi, | |
1049 | esi_buf2, sizeof(esi_buf2)) : ""); | |
1050 | } | |
1051 | ||
d62a17ae | 1052 | /* Locate route node in the global EVPN routing table. Note that |
1053 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1054 | * L3VPN routes. | |
1055 | */ | |
c44ab6f1 AK |
1056 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1057 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1058 | &vpn->prd); | |
9bcb3eef | 1059 | if (global_dest) { |
d62a17ae | 1060 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1061 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1062 | |
d62a17ae | 1063 | /* Schedule for processing - withdraws to peers happen from |
1064 | * this table. | |
1065 | */ | |
40381db7 | 1066 | if (pi) |
9bcb3eef DS |
1067 | bgp_process(bgp, global_dest, afi, safi); |
1068 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1069 | } |
128ea8ab | 1070 | |
d62a17ae | 1071 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1072 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1073 | } |
1074 | ||
1075 | /* | |
1076 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1077 | * if appropriate. | |
c44ab6f1 | 1078 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1079 | */ |
c44ab6f1 | 1080 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1081 | struct bgp_dest *dest) |
d62a17ae | 1082 | { |
4b7e6066 DS |
1083 | struct bgp_path_info *old_select, *new_select; |
1084 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1085 | afi_t afi = AFI_L2VPN; |
1086 | safi_t safi = SAFI_EVPN; | |
1087 | int ret = 0; | |
1088 | ||
1089 | /* Compute the best path. */ | |
9bcb3eef | 1090 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1091 | afi, safi); |
1092 | old_select = old_and_new.old; | |
1093 | new_select = old_and_new.new; | |
1094 | ||
1095 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1096 | * update to zebra RIB. |
1097 | * Remote routes and SYNC route (i.e. local routes with | |
1098 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1099 | * change. | |
d62a17ae | 1100 | */ |
1101 | if (old_select && old_select == new_select | |
1102 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1103 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1104 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1105 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1106 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1107 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1108 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1109 | ret = evpn_zebra_install( |
9bcb3eef DS |
1110 | bgp, vpn, |
1111 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1112 | dest), | |
d594a14c | 1113 | old_select); |
1defdda8 | 1114 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1115 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1116 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1117 | return ret; |
1118 | } | |
1119 | ||
1120 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1121 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1122 | |
1123 | /* bestpath has changed; update relevant fields and install or uninstall | |
1124 | * into the zebra RIB. | |
1125 | */ | |
1126 | if (old_select || new_select) | |
9bcb3eef | 1127 | bgp_bump_version(dest); |
d62a17ae | 1128 | |
1129 | if (old_select) | |
9bcb3eef | 1130 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1131 | if (new_select) { |
9bcb3eef DS |
1132 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1133 | bgp_path_info_unset_flag(dest, new_select, | |
1134 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1135 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1136 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1137 | } |
1138 | ||
9c7edc03 AK |
1139 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1140 | * to zebra | |
1141 | */ | |
d62a17ae | 1142 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1143 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1144 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1145 | ret = evpn_zebra_install( |
9bcb3eef DS |
1146 | bgp, vpn, |
1147 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1148 | new_select); |
d594a14c | 1149 | |
d62a17ae | 1150 | /* If an old best existed and it was a "local" route, the only |
1151 | * reason | |
1152 | * it would be supplanted is due to MAC mobility procedures. So, | |
1153 | * we | |
1154 | * need to do an implicit delete and withdraw that route from | |
1155 | * peers. | |
1156 | */ | |
9c7edc03 AK |
1157 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1158 | old_select && old_select->peer == bgp->peer_self | |
1159 | && old_select->type == ZEBRA_ROUTE_BGP | |
1160 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1161 | && vpn) | |
1162 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1163 | old_select, new_select); | |
d62a17ae | 1164 | } else { |
1165 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1166 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1167 | ret = evpn_zebra_uninstall( |
1168 | bgp, vpn, | |
9bcb3eef DS |
1169 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1170 | dest), | |
b54892e0 | 1171 | old_select->attr->nexthop); |
d62a17ae | 1172 | } |
1173 | ||
1174 | /* Clear any route change flags. */ | |
9bcb3eef | 1175 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1176 | |
18ee8310 | 1177 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1178 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1179 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1180 | |
1181 | return ret; | |
128ea8ab | 1182 | } |
1183 | ||
9c7edc03 AK |
1184 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1185 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1186 | { |
40381db7 | 1187 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1188 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1189 | |
9bcb3eef | 1190 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1191 | tmp_pi = tmp_pi->next) { |
1192 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1193 | local_pi = tmp_pi; |
9c7edc03 AK |
1194 | break; |
1195 | } | |
d62a17ae | 1196 | } |
c85c03c7 | 1197 | |
9c7edc03 | 1198 | return local_pi; |
c85c03c7 | 1199 | } |
1200 | ||
5e53dce3 | 1201 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1202 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1203 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1204 | struct attr *attr, int *route_changed) |
342dd0c6 | 1205 | { |
1206 | struct attr *attr_new = NULL; | |
40381db7 | 1207 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1208 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1209 | struct bgp_path_info *local_pi = NULL; |
1210 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1211 | |
5424b7ba | 1212 | *route_changed = 0; |
342dd0c6 | 1213 | /* locate the local route entry if any */ |
9bcb3eef | 1214 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1215 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1216 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1217 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1218 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1219 | local_pi = tmp_pi; | |
342dd0c6 | 1220 | } |
1221 | ||
2bb9eff4 | 1222 | /* |
0437e105 | 1223 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1224 | * Otherwise see if route attr has changed |
523cafc4 | 1225 | */ |
40381db7 | 1226 | if (!local_pi) { |
342dd0c6 | 1227 | |
5424b7ba MK |
1228 | /* route has changed as this is the first entry */ |
1229 | *route_changed = 1; | |
1230 | ||
342dd0c6 | 1231 | /* Add (or update) attribute to hash. */ |
1232 | attr_new = bgp_attr_intern(attr); | |
1233 | ||
1234 | /* create the route info from attribute */ | |
40381db7 | 1235 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1236 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1237 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1238 | |
b57ba6d2 | 1239 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1240 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1241 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1242 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1243 | pi->extra->num_labels = 1; | |
342dd0c6 | 1244 | |
1245 | /* add the route entry to route node*/ | |
9bcb3eef | 1246 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1247 | } else { |
1248 | ||
40381db7 DS |
1249 | tmp_pi = local_pi; |
1250 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1251 | |
1252 | /* attribute changed */ | |
1253 | *route_changed = 1; | |
1254 | ||
342dd0c6 | 1255 | /* The attribute has changed. */ |
1256 | /* Add (or update) attribute to hash. */ | |
1257 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1258 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1259 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1260 | |
1261 | /* Restore route, if needed. */ | |
40381db7 | 1262 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1263 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1264 | |
1265 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1266 | bgp_attr_unintern(&tmp_pi->attr); |
1267 | tmp_pi->attr = attr_new; | |
1268 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1269 | } |
1270 | } | |
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1275 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1276 | struct attr *src_attr) | |
342dd0c6 | 1277 | { |
1278 | afi_t afi = AFI_L2VPN; | |
1279 | safi_t safi = SAFI_EVPN; | |
1280 | struct attr attr; | |
9bcb3eef | 1281 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1282 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1283 | int route_changed = 0; |
342dd0c6 | 1284 | |
5e53dce3 T |
1285 | bgp_evpn = bgp_get_evpn(); |
1286 | if (!bgp_evpn) | |
faafdfa8 | 1287 | return 0; |
342dd0c6 | 1288 | |
2f69f6d3 | 1289 | /* Build path attribute for this route - use the source attr, if |
1290 | * present, else treat as locally originated. | |
1291 | */ | |
1292 | if (src_attr) | |
6f4f49b2 | 1293 | attr = *src_attr; |
2f69f6d3 | 1294 | else { |
1295 | memset(&attr, 0, sizeof(struct attr)); | |
1296 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1297 | } | |
5394a276 | 1298 | |
5394a276 CS |
1299 | /* Advertise Primary IP (PIP) is enabled, send individual |
1300 | * IP (default instance router-id) as nexthop. | |
1301 | * PIP is disabled or vrr interface is not present | |
27727001 | 1302 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1303 | */ |
1304 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1305 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1306 | attr.nexthop = bgp_vrf->originator_ip; | |
1307 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1308 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1309 | } else { |
27727001 CS |
1310 | /* copy sys rmac */ |
1311 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1312 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1313 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1314 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1315 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1316 | if (bgp_debug_zebra(NULL)) { | |
1317 | char buf1[PREFIX_STRLEN]; | |
1318 | ||
1319 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1320 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1321 | prefix2str(evp, buf1, sizeof(buf1))); | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | if (bgp_debug_zebra(NULL)) { | |
1326 | char buf[ETHER_ADDR_STRLEN]; | |
1327 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1328 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1329 | |
1330 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1331 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1332 | prefix2str(evp, buf1, sizeof(buf1)), | |
1333 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1334 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1335 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1336 | } |
1337 | ||
342dd0c6 | 1338 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1339 | |
1340 | /* Setup RT and encap extended community */ | |
1341 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1342 | ||
1343 | /* get the route node in global table */ | |
c44ab6f1 AK |
1344 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1345 | (const struct prefix_evpn *)evp, | |
1346 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1347 | assert(dest); |
342dd0c6 | 1348 | |
1349 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1350 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1351 | &route_changed); |
342dd0c6 | 1352 | |
1353 | /* schedule for processing and unlock node */ | |
5424b7ba | 1354 | if (route_changed) { |
9bcb3eef DS |
1355 | bgp_process(bgp_evpn, dest, afi, safi); |
1356 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1357 | } |
342dd0c6 | 1358 | |
1359 | /* uninten temporary */ | |
5ee65f6f | 1360 | if (!src_attr) |
1361 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1362 | return 0; |
1363 | } | |
1364 | ||
9c7edc03 | 1365 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1366 | struct bgp_dest *dest, uint32_t loc_seq, |
1367 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1368 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1369 | { |
1370 | struct bgp_path_info *tmp_pi; | |
1371 | struct bgp_path_info *second_best_path = NULL; | |
1372 | uint32_t tmp_mm_seq = 0; | |
1373 | esi_t *tmp_esi; | |
1374 | int paths_eq; | |
1375 | ||
1376 | /* find the best non-local path. a local path can only be present | |
1377 | * as best path | |
1378 | */ | |
09319b4e DS |
1379 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1380 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1381 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1382 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1383 | continue; | |
1384 | ||
1385 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1386 | second_best_path, &paths_eq)) | |
1387 | second_best_path = tmp_pi; | |
1388 | } | |
1389 | ||
1390 | if (!second_best_path) | |
1391 | return; | |
1392 | ||
1393 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1394 | /* if this has the same ES desination as the local path | |
1395 | * it is a sync path | |
1396 | */ | |
1397 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1398 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1399 | if (tmp_mm_seq < loc_seq) | |
1400 | return; | |
1401 | ||
1402 | /* we have a non-proxy path from the ES peer. */ | |
1403 | if (second_best_path->attr->es_flags & | |
1404 | ATTR_ES_PROXY_ADVERT) { | |
1405 | *proxy_from_peer = true; | |
1406 | } else { | |
1407 | *active_on_peer = true; | |
1408 | } | |
1409 | ||
1410 | if (second_best_path->attr->router_flag) | |
1411 | *peer_router = true; | |
1412 | ||
1413 | /* we use both proxy and non-proxy imports to | |
1414 | * determine the max sync sequence | |
1415 | */ | |
1416 | if (tmp_mm_seq > *max_sync_seq) | |
1417 | *max_sync_seq = tmp_mm_seq; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1422 | * This is need for MM sequence number syncing and proxy advertisement. | |
1423 | * Note: The local path can only exist as a best path in the | |
1424 | * VPN route table. It will take precedence over all sync paths. | |
1425 | */ | |
1426 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1427 | struct bgp_dest *dest, |
1428 | struct attr *attr, | |
1429 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1430 | { |
1431 | esi_t *esi; | |
752eed47 DS |
1432 | struct prefix_evpn *evp = |
1433 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1434 | |
1435 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1436 | return; | |
1437 | ||
1438 | esi = bgp_evpn_attr_get_esi(attr); | |
1439 | if (bgp_evpn_is_esi_valid(esi)) { | |
1440 | if (setup_sync) { | |
1441 | uint32_t max_sync_seq = 0; | |
1442 | bool active_on_peer = false; | |
1443 | bool peer_router = false; | |
1444 | bool proxy_from_peer = false; | |
1445 | ||
09319b4e DS |
1446 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1447 | &max_sync_seq, &active_on_peer, | |
1448 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1449 | attr->mm_sync_seqnum = max_sync_seq; |
1450 | if (active_on_peer) | |
1451 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1452 | else | |
1453 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1454 | if (proxy_from_peer) | |
1455 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1456 | else | |
1457 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1458 | if (peer_router) | |
1459 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1460 | else | |
1461 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1462 | ||
1463 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
1464 | char prefix_buf[PREFIX_STRLEN]; | |
1465 | char esi_buf[ESI_STR_LEN]; | |
1466 | ||
1467 | zlog_debug("setup sync info for %s es %s max_seq %d %s%s%s", | |
1468 | prefix2str(evp, prefix_buf, | |
1469 | sizeof(prefix_buf)), | |
1470 | esi_to_str(esi, esi_buf, | |
1471 | sizeof(esi_buf)), | |
1472 | max_sync_seq, | |
1473 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) ? | |
1474 | "peer-active " : "", | |
1475 | (attr->es_flags & ATTR_ES_PEER_PROXY) ? | |
1476 | "peer-proxy " : "", | |
1477 | (attr->es_flags & ATTR_ES_PEER_ROUTER) ? | |
1478 | "peer-router " : ""); | |
1479 | } | |
1480 | } | |
1481 | } else { | |
1482 | attr->mm_sync_seqnum = 0; | |
1483 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1484 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1485 | } | |
1486 | } | |
1487 | ||
128ea8ab | 1488 | /* |
1489 | * Create or update EVPN route entry. This could be in the VNI route table | |
1490 | * or the global route table. | |
1491 | */ | |
d62a17ae | 1492 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
9c7edc03 AK |
1493 | afi_t afi, safi_t safi, struct bgp_dest *dest, |
1494 | struct attr *attr, int add, | |
1495 | struct bgp_path_info **pi, uint8_t flags, | |
1496 | uint32_t seq, bool setup_sync, | |
1497 | bool *old_is_sync) | |
d62a17ae | 1498 | { |
40381db7 DS |
1499 | struct bgp_path_info *tmp_pi; |
1500 | struct bgp_path_info *local_pi; | |
d62a17ae | 1501 | struct attr *attr_new; |
b57ba6d2 | 1502 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1503 | uint32_t num_labels = 1; |
d62a17ae | 1504 | int route_change = 1; |
d7c0a89a | 1505 | uint8_t sticky = 0; |
b54892e0 | 1506 | const struct prefix_evpn *evp; |
d62a17ae | 1507 | |
40381db7 | 1508 | *pi = NULL; |
9bcb3eef | 1509 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1510 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1511 | |
f07e1c99 | 1512 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1513 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1514 | |
1515 | /* If route doesn't exist already, create a new one, if told to. | |
1516 | * Otherwise act based on whether the attributes of the route have | |
1517 | * changed or not. | |
1518 | */ | |
40381db7 | 1519 | if (!local_pi && !add) |
d62a17ae | 1520 | return 0; |
1521 | ||
9c7edc03 AK |
1522 | if (old_is_sync && local_pi) |
1523 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1524 | ||
1525 | /* if a local path is being added with a non-zero esi look | |
1526 | * for SYNC paths from ES peers and bubble up the sync-info | |
1527 | */ | |
1528 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, setup_sync); | |
1529 | ||
f07e1c99 | 1530 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1531 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1532 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1533 | |
40381db7 | 1534 | if (!local_pi) { |
d62a17ae | 1535 | /* Add (or update) attribute to hash. */ |
1536 | attr_new = bgp_attr_intern(attr); | |
1537 | ||
1538 | /* Extract MAC mobility sequence number, if any. */ | |
1539 | attr_new->mm_seqnum = | |
1540 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1541 | attr_new->sticky = sticky; | |
1542 | ||
1543 | /* Create new route with its attribute. */ | |
40381db7 | 1544 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1545 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1546 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1547 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1548 | |
1549 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1550 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1551 | |
1552 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1553 | * Only attach second label if we are advertising two labels for | |
1554 | * type-2 routes. | |
1555 | */ | |
996c9314 LB |
1556 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1557 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1558 | vni_t l3vni; |
1559 | ||
1560 | l3vni = bgpevpn_get_l3vni(vpn); | |
1561 | if (l3vni) { | |
1562 | vni2label(l3vni, &label[1]); | |
1563 | num_labels++; | |
1564 | } | |
1565 | } | |
d62a17ae | 1566 | |
40381db7 DS |
1567 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1568 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1569 | /* Mark route as self type-2 route */ |
1570 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1571 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1572 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1573 | } else { |
40381db7 DS |
1574 | tmp_pi = local_pi; |
1575 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1576 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1577 | route_change = 0; |
1578 | else { | |
c48d9f5f MK |
1579 | /* |
1580 | * The attributes have changed, type-2 routes needs to | |
1581 | * be advertised with right labels. | |
1582 | */ | |
1583 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1584 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1585 | && CHECK_FLAG(vpn->flags, | |
1586 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1587 | vni_t l3vni; |
1588 | ||
1589 | l3vni = bgpevpn_get_l3vni(vpn); | |
1590 | if (l3vni) { | |
1591 | vni2label(l3vni, &label[1]); | |
1592 | num_labels++; | |
1593 | } | |
1594 | } | |
40381db7 DS |
1595 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1596 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1597 | |
d62a17ae | 1598 | /* The attribute has changed. */ |
1599 | /* Add (or update) attribute to hash. */ | |
1600 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1601 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1602 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1603 | |
f07e1c99 | 1604 | /* Extract MAC mobility sequence number, if any. */ |
1605 | attr_new->mm_seqnum = | |
1606 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1607 | attr_new->sticky = sticky; | |
1608 | ||
d62a17ae | 1609 | /* Restore route, if needed. */ |
40381db7 | 1610 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1611 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1612 | |
1613 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1614 | bgp_attr_unintern(&tmp_pi->attr); |
1615 | tmp_pi->attr = attr_new; | |
1616 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1617 | } |
1618 | } | |
1619 | ||
1620 | /* Return back the route entry. */ | |
40381db7 | 1621 | *pi = tmp_pi; |
d62a17ae | 1622 | return route_change; |
128ea8ab | 1623 | } |
1624 | ||
ec0ab544 | 1625 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1626 | struct bgpevpn *vpn, |
1627 | struct bgp_dest *dest) | |
ec0ab544 AK |
1628 | { |
1629 | struct bgp_path_info *tmp_ri; | |
1630 | struct bgp_path_info *curr_select = NULL; | |
1631 | ||
9bcb3eef DS |
1632 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1633 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1634 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1635 | curr_select = tmp_ri; | |
1636 | break; | |
1637 | } | |
1638 | } | |
1639 | ||
1640 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1641 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1642 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1643 | evpn_zebra_install(bgp, vpn, | |
1644 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1645 | curr_select); | |
ec0ab544 AK |
1646 | } |
1647 | ||
6d8c603a AK |
1648 | /* |
1649 | * If the local route was not selected evict it and tell zebra to re-add | |
1650 | * the best remote dest. | |
1651 | * | |
1652 | * Typically a local path added by zebra is expected to be selected as | |
1653 | * best. In which case when a remote path wins as best (later) | |
1654 | * evpn_route_select_install itself evicts the older-local-best path. | |
1655 | * | |
1656 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1657 | * is possible that the local path is no longer the "older" best path. | |
1658 | * It is a path that was never designated as best and hence requires | |
1659 | * additional handling to prevent bgp from injecting and holding on to a | |
1660 | * non-best local path. | |
1661 | */ | |
1662 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1663 | struct bgpevpn *vpn, | |
9bcb3eef | 1664 | struct bgp_dest *dest, |
9a8897aa | 1665 | struct bgp_path_info *local_pi) |
6d8c603a | 1666 | { |
6d8c603a | 1667 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1668 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1669 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1670 | dest); |
b54892e0 | 1671 | |
9c7edc03 | 1672 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1673 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1674 | |
1675 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1676 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1677 | } |
1678 | ||
128ea8ab | 1679 | /* |
1680 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1681 | * and schedule for processing. | |
1682 | */ | |
d62a17ae | 1683 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1684 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1685 | uint32_t seq, esi_t *esi) |
128ea8ab | 1686 | { |
9bcb3eef | 1687 | struct bgp_dest *dest; |
d62a17ae | 1688 | struct attr attr; |
1689 | struct attr *attr_new; | |
1ec31309 | 1690 | int add_l3_ecomm = 0; |
40381db7 | 1691 | struct bgp_path_info *pi; |
d62a17ae | 1692 | afi_t afi = AFI_L2VPN; |
1693 | safi_t safi = SAFI_EVPN; | |
1694 | int route_change; | |
9c7edc03 | 1695 | bool old_is_sync = false; |
128ea8ab | 1696 | |
d62a17ae | 1697 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1698 | |
d62a17ae | 1699 | /* Build path-attribute for this route. */ |
1700 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1701 | attr.nexthop = vpn->originator_ip; | |
1702 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1703 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1704 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1705 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1706 | attr.router_flag = CHECK_FLAG(flags, |
1707 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1708 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1709 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1710 | ||
1711 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1712 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1713 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1714 | } | |
1715 | ||
be41eb68 | 1716 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1717 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1718 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1719 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1720 | } | |
be41eb68 | 1721 | |
9c7edc03 AK |
1722 | if (bgp_debug_zebra(NULL)) { |
1723 | char buf[ETHER_ADDR_STRLEN]; | |
1724 | char buf1[PREFIX_STRLEN]; | |
1725 | char buf3[ESI_STR_LEN]; | |
1726 | ||
23d0a753 DA |
1727 | zlog_debug( |
1728 | "VRF %s vni %u type-2 route evp %s RMAC %s nexthop %pI4 esi %s", | |
1729 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) | |
1730 | : " ", | |
1731 | vpn->vni, prefix2str(p, buf1, sizeof(buf1)), | |
1732 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1733 | &attr.mp_nexthop_global_in, | |
1734 | esi_to_str(esi, buf3, sizeof(buf3))); | |
9c7edc03 | 1735 | } |
1ec31309 | 1736 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1737 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1738 | uint8_t af_flags = 0; | |
1739 | ||
1740 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1741 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1742 | ||
1743 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1744 | } |
1745 | ||
a21bd7a3 | 1746 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1747 | |
1ec31309 | 1748 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1749 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1750 | * these routes. | |
1751 | */ | |
1752 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1753 | (is_evpn_prefix_ipaddr_v4(p) || |
1754 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1755 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1756 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1757 | add_l3_ecomm = 1; |
1758 | ||
1759 | /* Set up extended community. */ | |
1760 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1761 | |
d62a17ae | 1762 | /* First, create (or fetch) route node within the VNI. */ |
1763 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1764 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1765 | |
d62a17ae | 1766 | /* Create or update route entry. */ |
9bcb3eef | 1767 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1768 | 1, &pi, flags, seq, |
1769 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1770 | assert(pi); |
1771 | attr_new = pi->attr; | |
128ea8ab | 1772 | |
6d8c603a AK |
1773 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1774 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1775 | |
1776 | /* Perform route selection. Normally, the local route in the | |
1777 | * VNI is expected to win and be the best route. However, if | |
1778 | * there is a race condition where a host moved from local to | |
1779 | * remote and the remote route was received in BGP just prior | |
1780 | * to the local MACIP notification from zebra, the remote | |
1781 | * route would win, and we should evict the defunct local route | |
1782 | * and (re)install the remote route into zebra. | |
1783 | */ | |
9bcb3eef | 1784 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1785 | /* |
9a8897aa AK |
1786 | * If the new local route was not selected evict it and tell zebra |
1787 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1788 | * routes. | |
6d8c603a | 1789 | */ |
9c7edc03 | 1790 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1791 | route_change = 0; |
9c7edc03 AK |
1792 | } else { |
1793 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1794 | route_change = 0; | |
1795 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1796 | } else { | |
1797 | bool new_is_sync; | |
1798 | ||
1799 | /* If the local path already existed and is still the | |
1800 | * best path we need to also check if it transitioned | |
1801 | * from being a sync path to a non-sync path. If it | |
1802 | * it did we need to notify zebra that the sync-path | |
1803 | * has been removed. | |
1804 | */ | |
1805 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1806 | if (!new_is_sync && old_is_sync) | |
1807 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1808 | } | |
9a8897aa | 1809 | } |
6d8c603a AK |
1810 | bgp_path_info_unlock(pi); |
1811 | ||
9bcb3eef | 1812 | bgp_dest_unlock_node(dest); |
128ea8ab | 1813 | |
d62a17ae | 1814 | /* If this is a new route or some attribute has changed, export the |
1815 | * route to the global table. The route will be advertised to peers | |
1816 | * from there. Note that this table is a 2-level tree (RD-level + | |
1817 | * Prefix-level) similar to L3VPN routes. | |
1818 | */ | |
1819 | if (route_change) { | |
40381db7 | 1820 | struct bgp_path_info *global_pi; |
128ea8ab | 1821 | |
c44ab6f1 AK |
1822 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1823 | (const struct prefix_evpn *)p, | |
1824 | &vpn->prd); | |
9bcb3eef | 1825 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1826 | &global_pi, flags, seq, |
1827 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1828 | |
d62a17ae | 1829 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1830 | bgp_process(bgp, dest, afi, safi); |
1831 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1832 | } |
128ea8ab | 1833 | |
d62a17ae | 1834 | /* Unintern temporary. */ |
1835 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1836 | |
d62a17ae | 1837 | return 0; |
128ea8ab | 1838 | } |
1839 | ||
50f74cf1 | 1840 | /* |
1841 | * Delete EVPN route entry. | |
1842 | * The entry can be in ESI/VNI table or the global table. | |
1843 | */ | |
185fb14a | 1844 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1845 | struct bgp_dest *dest, |
40381db7 | 1846 | struct bgp_path_info **pi) |
342dd0c6 | 1847 | { |
40381db7 | 1848 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1849 | |
40381db7 | 1850 | *pi = NULL; |
342dd0c6 | 1851 | |
50f74cf1 | 1852 | /* Now, find matching route. */ |
9bcb3eef | 1853 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1854 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1855 | if (tmp_pi->peer == bgp->peer_self |
1856 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1857 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1858 | break; |
1859 | ||
40381db7 | 1860 | *pi = tmp_pi; |
342dd0c6 | 1861 | |
1862 | /* Mark route for delete. */ | |
40381db7 | 1863 | if (tmp_pi) |
9bcb3eef | 1864 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1865 | } |
1866 | ||
1867 | /* Delete EVPN type5 route */ | |
996c9314 | 1868 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1869 | { |
1870 | afi_t afi = AFI_L2VPN; | |
1871 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1872 | struct bgp_dest *dest = NULL; |
40381db7 | 1873 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1874 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1875 | |
5e53dce3 T |
1876 | bgp_evpn = bgp_get_evpn(); |
1877 | if (!bgp_evpn) | |
faafdfa8 | 1878 | return 0; |
342dd0c6 | 1879 | |
1880 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1881 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1882 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1883 | if (!dest) |
342dd0c6 | 1884 | return 0; |
1885 | ||
9bcb3eef | 1886 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1887 | if (pi) |
9bcb3eef DS |
1888 | bgp_process(bgp_evpn, dest, afi, safi); |
1889 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1890 | return 0; |
1891 | } | |
1892 | ||
128ea8ab | 1893 | /* |
1894 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1895 | * schedule for processing. | |
1896 | */ | |
d62a17ae | 1897 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1898 | struct prefix_evpn *p) | |
1899 | { | |
9bcb3eef | 1900 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1901 | struct bgp_path_info *pi; |
d62a17ae | 1902 | afi_t afi = AFI_L2VPN; |
1903 | safi_t safi = SAFI_EVPN; | |
1904 | ||
1905 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1906 | * there | |
1907 | * is nothing further to do. | |
1908 | */ | |
1909 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1910 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1911 | if (!dest) | |
d62a17ae | 1912 | return 0; |
1913 | ||
1914 | /* Next, locate route node in the global EVPN routing table. Note that | |
1915 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1916 | * L3VPN routes. | |
1917 | */ | |
c44ab6f1 AK |
1918 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1919 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1920 | if (global_dest) { |
d62a17ae | 1921 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1922 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1923 | |
1924 | /* Schedule for processing - withdraws to peers happen from | |
1925 | * this table. | |
1926 | */ | |
40381db7 | 1927 | if (pi) |
9bcb3eef DS |
1928 | bgp_process(bgp, global_dest, afi, safi); |
1929 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1930 | } |
1931 | ||
1932 | /* Delete route entry in the VNI route table. This can just be removed. | |
1933 | */ | |
9bcb3eef | 1934 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1935 | if (pi) { |
9bcb3eef DS |
1936 | bgp_path_info_reap(dest, pi); |
1937 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1938 | } |
9bcb3eef | 1939 | bgp_dest_unlock_node(dest); |
d62a17ae | 1940 | |
1941 | return 0; | |
128ea8ab | 1942 | } |
1943 | ||
9c7edc03 | 1944 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
09319b4e DS |
1945 | struct bgpevpn *vpn, |
1946 | struct bgp_dest *dest, | |
1947 | struct bgp_path_info *local_pi, | |
1948 | const char *caller) | |
9c7edc03 AK |
1949 | { |
1950 | afi_t afi = AFI_L2VPN; | |
1951 | safi_t safi = SAFI_EVPN; | |
1952 | struct bgp_path_info *pi; | |
1953 | struct attr attr; | |
1954 | struct attr *attr_new; | |
1955 | uint32_t seq; | |
1956 | int add_l3_ecomm = 0; | |
09319b4e | 1957 | struct bgp_dest *global_dest; |
9c7edc03 | 1958 | struct bgp_path_info *global_pi; |
752eed47 DS |
1959 | struct prefix_evpn *evp = |
1960 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1961 | int route_change; |
1962 | bool old_is_sync = false; | |
1963 | ||
1964 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1965 | return; | |
1966 | ||
1967 | /* | |
1968 | * Build attribute per local route as the MAC mobility and | |
1969 | * some other values could differ for different routes. The | |
1970 | * attributes will be shared in the hash table. | |
1971 | */ | |
1972 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1973 | attr.nexthop = vpn->originator_ip; | |
1974 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1975 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1976 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
1977 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
1978 | attr.es_flags = local_pi->attr->es_flags; | |
1979 | if (local_pi->attr->default_gw) { | |
1980 | attr.default_gw = 1; | |
1981 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1982 | attr.router_flag = 1; | |
1983 | } | |
1984 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
1985 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
1986 | local_pi->extra->af_flags); | |
1987 | vni2label(vpn->vni, &(attr.label)); | |
1988 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1989 | * using L3 VNI for type-2 routes also. | |
1990 | */ | |
1991 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
1992 | !IN6_IS_ADDR_LINKLOCAL( | |
1993 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
1994 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && | |
1995 | bgpevpn_get_l3vni(vpn)) | |
1996 | add_l3_ecomm = 1; | |
1997 | ||
1998 | /* Set up extended community. */ | |
1999 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2000 | seq = mac_mobility_seqnum(local_pi->attr); | |
2001 | ||
2002 | if (bgp_debug_zebra(NULL)) { | |
2003 | char buf[ETHER_ADDR_STRLEN]; | |
2004 | char buf1[PREFIX_STRLEN]; | |
2005 | char buf3[ESI_STR_LEN]; | |
2006 | ||
23d0a753 DA |
2007 | zlog_debug( |
2008 | "VRF %s vni %u evp %s RMAC %s nexthop %pI4 esi %s esf 0x%x from %s", | |
2009 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) | |
2010 | : " ", | |
2011 | vpn->vni, prefix2str(evp, buf1, sizeof(buf1)), | |
2012 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
2013 | &attr.mp_nexthop_global_in, | |
2014 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), | |
2015 | attr.es_flags, caller); | |
9c7edc03 AK |
2016 | } |
2017 | ||
2018 | /* Update the route entry. */ | |
09319b4e DS |
2019 | route_change = update_evpn_route_entry( |
2020 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2021 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2022 | |
2023 | assert(pi); | |
2024 | attr_new = pi->attr; | |
2025 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2026 | bgp_path_info_lock(pi); | |
2027 | ||
2028 | /* Perform route selection. Normally, the local route in the | |
2029 | * VNI is expected to win and be the best route. However, | |
2030 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2031 | * that causes best selection to be based on next hop), a | |
2032 | * remote route could win. If the local route is the best, | |
2033 | * ensure it is updated in the global EVPN route table and | |
2034 | * advertised to peers; otherwise, ensure it is evicted and | |
2035 | * (re)install the remote route into zebra. | |
2036 | */ | |
09319b4e | 2037 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2038 | |
2039 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2040 | route_change = 0; | |
2041 | } else { | |
2042 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2043 | route_change = 0; | |
09319b4e | 2044 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2045 | } else { |
2046 | bool new_is_sync; | |
2047 | ||
2048 | /* If the local path already existed and is still the | |
2049 | * best path we need to also check if it transitioned | |
2050 | * from being a sync path to a non-sync path. If it | |
2051 | * it did we need to notify zebra that the sync-path | |
2052 | * has been removed. | |
2053 | */ | |
2054 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2055 | if (!new_is_sync && old_is_sync) | |
2056 | evpn_zebra_uninstall(bgp, vpn, | |
2057 | evp, zero_vtep_ip); | |
2058 | } | |
2059 | } | |
2060 | ||
2061 | ||
2062 | /* unlock pi */ | |
2063 | bgp_path_info_unlock(pi); | |
2064 | ||
2065 | if (route_change) { | |
2066 | /* Update route in global routing table. */ | |
09319b4e DS |
2067 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2068 | safi, evp, &vpn->prd); | |
2069 | assert(global_dest); | |
2070 | update_evpn_route_entry( | |
2071 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2072 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2073 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2074 | |
2075 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2076 | bgp_process(bgp, global_dest, afi, safi); |
2077 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2078 | } |
2079 | ||
2080 | /* Unintern temporary. */ | |
2081 | aspath_unintern(&attr.aspath); | |
2082 | } | |
2083 | ||
128ea8ab | 2084 | /* |
2085 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2086 | * be scheduled for advertise to peers. | |
2087 | */ | |
d62a17ae | 2088 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2089 | { | |
9bcb3eef | 2090 | struct bgp_dest *dest; |
9c7edc03 | 2091 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2092 | |
2093 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2094 | * routes updated, update corresponding entry in the global table too. | |
2095 | */ | |
9bcb3eef | 2096 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2097 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2098 | const struct prefix_evpn *evp = |
2099 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2100 | |
2101 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2102 | continue; | |
2103 | ||
f07e1c99 | 2104 | /* Identify local route. */ |
9bcb3eef | 2105 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2106 | tmp_pi = tmp_pi->next) { |
40381db7 | 2107 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2108 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2109 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2110 | break; |
7ec156a9 | 2111 | } |
d62a17ae | 2112 | |
40381db7 | 2113 | if (!tmp_pi) |
d62a17ae | 2114 | continue; |
2115 | ||
9c7edc03 AK |
2116 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2117 | __func__); | |
f07e1c99 | 2118 | } |
d62a17ae | 2119 | |
2120 | return 0; | |
128ea8ab | 2121 | } |
2122 | ||
2123 | /* | |
2124 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2125 | * global routing table. These are also scheduled for withdraw from peers. | |
2126 | */ | |
d62a17ae | 2127 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2128 | { |
d62a17ae | 2129 | afi_t afi; |
2130 | safi_t safi; | |
9bcb3eef | 2131 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2132 | struct bgp_table *table; |
40381db7 | 2133 | struct bgp_path_info *pi; |
128ea8ab | 2134 | |
d62a17ae | 2135 | afi = AFI_L2VPN; |
2136 | safi = SAFI_EVPN; | |
128ea8ab | 2137 | |
9bcb3eef DS |
2138 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2139 | (struct prefix *)&vpn->prd); | |
2140 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2141 | table = bgp_dest_get_bgp_table_info(rddest); | |
2142 | for (dest = bgp_table_top(table); dest; | |
2143 | dest = bgp_route_next(dest)) { | |
2144 | const struct prefix_evpn *evp = | |
2145 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2146 | dest); | |
128ea8ab | 2147 | |
d62a17ae | 2148 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2149 | continue; | |
128ea8ab | 2150 | |
9bcb3eef | 2151 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2152 | if (pi) |
9bcb3eef | 2153 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2154 | } |
2155 | } | |
128ea8ab | 2156 | |
d62a17ae | 2157 | /* Unlock RD node. */ |
9bcb3eef DS |
2158 | if (rddest) |
2159 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2160 | |
d62a17ae | 2161 | return 0; |
128ea8ab | 2162 | } |
2163 | ||
2164 | /* | |
2165 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2166 | * table as well as the per-VNI route table. | |
2167 | */ | |
d62a17ae | 2168 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2169 | { |
d62a17ae | 2170 | afi_t afi; |
2171 | safi_t safi; | |
9bcb3eef | 2172 | struct bgp_dest *dest; |
40381db7 | 2173 | struct bgp_path_info *pi; |
128ea8ab | 2174 | |
d62a17ae | 2175 | afi = AFI_L2VPN; |
2176 | safi = SAFI_EVPN; | |
128ea8ab | 2177 | |
d62a17ae | 2178 | /* First, walk the global route table for this VNI's type-2 local |
2179 | * routes. | |
2180 | * EVPN routes are a 2-level table, first get the RD table. | |
2181 | */ | |
2182 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2183 | |
d62a17ae | 2184 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2185 | for (dest = bgp_table_top(vpn->route_table); dest; |
2186 | dest = bgp_route_next(dest)) { | |
2187 | const struct prefix_evpn *evp = | |
2188 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2189 | |
d62a17ae | 2190 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2191 | continue; | |
128ea8ab | 2192 | |
9bcb3eef | 2193 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2194 | |
d62a17ae | 2195 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2196 | if (pi) |
9bcb3eef | 2197 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2198 | } |
128ea8ab | 2199 | |
d62a17ae | 2200 | return 0; |
128ea8ab | 2201 | } |
2202 | ||
2203 | /* | |
2204 | * Delete all routes in the per-VNI route table. | |
2205 | */ | |
d62a17ae | 2206 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2207 | { |
9bcb3eef | 2208 | struct bgp_dest *dest; |
40381db7 | 2209 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2210 | |
d62a17ae | 2211 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2212 | for (dest = bgp_table_top(vpn->route_table); dest; |
2213 | dest = bgp_route_next(dest)) { | |
2214 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2215 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2216 | bgp_path_info_delete(dest, pi); |
2217 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2218 | } |
2219 | } | |
128ea8ab | 2220 | |
d62a17ae | 2221 | return 0; |
128ea8ab | 2222 | } |
2223 | ||
833b8a50 AK |
2224 | /* BUM traffic flood mode per-l2-vni */ |
2225 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2226 | struct bgpevpn *vpn) | |
2227 | { | |
2228 | /* if flooding has been globally disabled per-vni mode is | |
2229 | * not relevant | |
2230 | */ | |
2231 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2232 | return VXLAN_FLOOD_DISABLED; | |
2233 | ||
2234 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2235 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2236 | return VXLAN_FLOOD_PIM_SM; | |
2237 | ||
2238 | /* default is ingress replication */ | |
2239 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2240 | } | |
2241 | ||
128ea8ab | 2242 | /* |
2243 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2244 | * export RT getting modified or change to tunnel IP. Note that these | |
2245 | * situations need the route in the per-VNI table as well as the global | |
2246 | * table to be updated (as attributes change). | |
2247 | */ | |
0ca10580 | 2248 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2249 | { |
d62a17ae | 2250 | int ret; |
2251 | struct prefix_evpn p; | |
128ea8ab | 2252 | |
d62a17ae | 2253 | /* Update and advertise the type-3 route (only one) followed by the |
2254 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2255 | * |
2256 | * RT-3 only if doing head-end replication | |
d62a17ae | 2257 | */ |
833b8a50 AK |
2258 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2259 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2260 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2261 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2262 | if (ret) |
2263 | return ret; | |
2264 | } | |
128ea8ab | 2265 | |
d62a17ae | 2266 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2267 | } |
2268 | ||
2269 | /* | |
2270 | * Delete (and withdraw) local routes for specified VNI from the global | |
2271 | * table and per-VNI table. After this, remove all other routes from | |
2272 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2273 | * (advertise-all-vni) being disabled. | |
2274 | */ | |
d62a17ae | 2275 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2276 | { |
d62a17ae | 2277 | int ret; |
2278 | struct prefix_evpn p; | |
128ea8ab | 2279 | |
d62a17ae | 2280 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2281 | * followed by type-3 routes (only one) - for this VNI. | |
2282 | */ | |
2283 | ret = delete_all_type2_routes(bgp, vpn); | |
2284 | if (ret) | |
2285 | return ret; | |
128ea8ab | 2286 | |
d62a17ae | 2287 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2288 | ret = delete_evpn_route(bgp, vpn, &p); | |
2289 | if (ret) | |
2290 | return ret; | |
128ea8ab | 2291 | |
d62a17ae | 2292 | /* Delete all routes from the per-VNI table. */ |
2293 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2294 | } |
2295 | ||
76d07c7a AK |
2296 | /* |
2297 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2298 | * remove the type-3 route if any. A new type-3 route will be generated | |
2299 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2300 | */ | |
2301 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2302 | struct in_addr mcast_grp) | |
2303 | { | |
2304 | struct prefix_evpn p; | |
2305 | ||
2306 | vpn->mcast_grp = mcast_grp; | |
2307 | ||
2308 | if (is_vni_live(vpn)) { | |
2309 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2310 | delete_evpn_route(bgp, vpn, &p); | |
2311 | } | |
2312 | ||
2313 | return 0; | |
2314 | } | |
2315 | ||
128ea8ab | 2316 | /* |
d1911c26 | 2317 | * There is a tunnel endpoint IP address change for this VNI, delete |
2318 | * prior type-3 route (if needed) and update. | |
2319 | * Note: Route re-advertisement happens elsewhere after other processing | |
2320 | * other changes. | |
128ea8ab | 2321 | */ |
d62a17ae | 2322 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2323 | struct in_addr originator_ip) | |
128ea8ab | 2324 | { |
d62a17ae | 2325 | struct prefix_evpn p; |
128ea8ab | 2326 | |
ddd16ed5 MK |
2327 | /* If VNI is not live, we only need to update the originator ip */ |
2328 | if (!is_vni_live(vpn)) { | |
2329 | vpn->originator_ip = originator_ip; | |
2330 | return 0; | |
2331 | } | |
2332 | ||
db0e1937 MK |
2333 | /* Update the tunnel-ip hash */ |
2334 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2335 | bgp_tip_add(bgp, &originator_ip); | |
2336 | ||
2337 | /* filter routes as martian nexthop db has changed */ | |
2338 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2339 | ||
d62a17ae | 2340 | /* Need to withdraw type-3 route as the originator IP is part |
2341 | * of the key. | |
2342 | */ | |
2343 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2344 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2345 | |
d62a17ae | 2346 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2347 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2348 | return 0; |
185fb14a | 2349 | } |
50f74cf1 | 2350 | |
185fb14a AK |
2351 | static struct bgp_path_info * |
2352 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2353 | struct bgp_dest *dest, struct attr *attr) | |
2354 | { | |
2355 | struct attr *attr_new; | |
2356 | struct bgp_path_info *pi; | |
50f74cf1 | 2357 | |
185fb14a AK |
2358 | /* Add (or update) attribute to hash. */ |
2359 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2360 | |
185fb14a AK |
2361 | /* Create new route with its attribute. */ |
2362 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2363 | attr_new, dest); | |
2364 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2365 | bgp_path_info_extra_get(pi); | |
2366 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2367 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2368 | if (parent_pi->extra) { | |
2369 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2370 | sizeof(pi->extra->label)); | |
2371 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2372 | } |
185fb14a | 2373 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2374 | |
185fb14a | 2375 | return pi; |
50f74cf1 | 2376 | } |
2377 | ||
d3135ba3 | 2378 | /* |
2379 | * Install route entry into the VRF routing table and invoke route selection. | |
2380 | */ | |
2381 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2382 | const struct prefix_evpn *evp, |
40381db7 | 2383 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2384 | { |
9bcb3eef | 2385 | struct bgp_dest *dest; |
40381db7 | 2386 | struct bgp_path_info *pi; |
1ec31309 | 2387 | struct attr attr; |
d3135ba3 | 2388 | struct attr *attr_new; |
c4edf708 | 2389 | int ret = 0; |
d3135ba3 | 2390 | struct prefix p; |
2391 | struct prefix *pp = &p; | |
2392 | afi_t afi = 0; | |
2393 | safi_t safi = 0; | |
1eb88002 | 2394 | char buf[PREFIX_STRLEN]; |
5f0c5ec8 | 2395 | bool new_pi = false; |
d3135ba3 | 2396 | |
2397 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2398 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2399 | |
1eb88002 | 2400 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2401 | zlog_debug( |
5f0c5ec8 | 2402 | "vrf %s: import evpn prefix %s parent %p flags 0x%x", |
2403 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2404 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2405 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2406 | } |
2407 | ||
d3135ba3 | 2408 | /* Create (or fetch) route within the VRF. */ |
2409 | /* NOTE: There is no RD here. */ | |
3714a385 | 2410 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2411 | afi = AFI_IP; |
2412 | safi = SAFI_UNICAST; | |
9bcb3eef | 2413 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2414 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2415 | afi = AFI_IP6; |
2416 | safi = SAFI_UNICAST; | |
9bcb3eef | 2417 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2418 | } else |
2419 | return 0; | |
2420 | ||
1ec31309 | 2421 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2422 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2423 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2424 | * address for the rest of the code to flow through. In the case of IPv4, | |
2425 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2426 | */ |
6f4f49b2 | 2427 | attr = *parent_pi->attr; |
1ec31309 | 2428 | if (afi == AFI_IP6) |
2429 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2430 | else |
2431 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2432 | |
d3135ba3 | 2433 | /* Check if route entry is already present. */ |
9bcb3eef | 2434 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2435 | if (pi->extra |
2436 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2437 | break; |
2438 | ||
5f0c5ec8 | 2439 | if (!pi) { |
9bcb3eef | 2440 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2441 | new_pi = true; |
2442 | } else { | |
40381db7 DS |
2443 | if (attrhash_cmp(pi->attr, &attr) |
2444 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2445 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2446 | return 0; |
2447 | } | |
2448 | /* The attribute has changed. */ | |
2449 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2450 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2451 | |
2452 | /* Restore route, if needed. */ | |
40381db7 | 2453 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2454 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2455 | |
2456 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2457 | if ((afi == AFI_IP |
2458 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2459 | || (afi == AFI_IP6 | |
2460 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2461 | &attr_new->mp_nexthop_global))) | |
2462 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2463 | |
9bcb3eef | 2464 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2465 | /* Unintern existing, set to new. */ |
40381db7 DS |
2466 | bgp_attr_unintern(&pi->attr); |
2467 | pi->attr = attr_new; | |
2468 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2469 | } |
d846e917 | 2470 | /* as it is an importation, change nexthop */ |
9bcb3eef | 2471 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); |
d3135ba3 | 2472 | |
9bcb3eef | 2473 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2474 | safi); |
b49cdf4c | 2475 | |
d3135ba3 | 2476 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2477 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2478 | |
7452e879 | 2479 | /* Process for route leaking. */ |
2480 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2481 | ||
9bcb3eef | 2482 | bgp_dest_unlock_node(dest); |
3c11d70a | 2483 | |
5f0c5ec8 | 2484 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2485 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2486 | new_pi ? "new" : "update", dest, | |
2487 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2488 | pi->flags); | |
5f0c5ec8 | 2489 | |
d3135ba3 | 2490 | return ret; |
2491 | } | |
2492 | ||
128ea8ab | 2493 | /* |
2494 | * Install route entry into the VNI routing table and invoke route selection. | |
2495 | */ | |
d62a17ae | 2496 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2497 | const struct prefix_evpn *p, |
40381db7 | 2498 | struct bgp_path_info *parent_pi) |
d62a17ae | 2499 | { |
9bcb3eef | 2500 | struct bgp_dest *dest; |
40381db7 | 2501 | struct bgp_path_info *pi; |
9c7edc03 | 2502 | struct bgp_path_info *local_pi; |
d62a17ae | 2503 | struct attr *attr_new; |
2504 | int ret; | |
c44ab6f1 AK |
2505 | struct prefix_evpn ad_evp; |
2506 | ||
2507 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2508 | * we need to create a different copy for the VNI | |
2509 | */ | |
2510 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2511 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2512 | parent_pi->attr->nexthop); | |
d62a17ae | 2513 | |
2514 | /* Create (or fetch) route within the VNI. */ | |
2515 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2516 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2517 | |
2518 | /* Check if route entry is already present. */ | |
9bcb3eef | 2519 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2520 | if (pi->extra |
2521 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2522 | break; |
2523 | ||
bd0254af MS |
2524 | if (!pi) { |
2525 | /* Create an info */ | |
9bcb3eef | 2526 | (void)bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2527 | parent_pi->attr); |
bd0254af | 2528 | } else { |
40381db7 DS |
2529 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2530 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2531 | bgp_dest_unlock_node(dest); |
d62a17ae | 2532 | return 0; |
2533 | } | |
2534 | /* The attribute has changed. */ | |
2535 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2536 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2537 | |
50f74cf1 | 2538 | /* Restore route, if needed. */ |
40381db7 | 2539 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2540 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2541 | |
2542 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2543 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2544 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2545 | |
2546 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2547 | bgp_attr_unintern(&pi->attr); |
2548 | pi->attr = attr_new; | |
2549 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2550 | } |
2551 | ||
2552 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2553 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2554 | |
9c7edc03 AK |
2555 | /* if the best path is a local path with a non-zero ES |
2556 | * sync info against the local path may need to be updated | |
2557 | * when a remote path is added/updated (including changes | |
2558 | * from sync-path to remote-path) | |
2559 | */ | |
2560 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2561 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2562 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2563 | __func__); | |
2564 | ||
9bcb3eef | 2565 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2566 | |
50f74cf1 | 2567 | return ret; |
2568 | } | |
2569 | ||
d3135ba3 | 2570 | /* |
2571 | * Uninstall route entry from the VRF routing table and send message | |
2572 | * to zebra, if appropriate. | |
2573 | */ | |
2574 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2575 | const struct prefix_evpn *evp, |
40381db7 | 2576 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2577 | { |
9bcb3eef | 2578 | struct bgp_dest *dest; |
40381db7 | 2579 | struct bgp_path_info *pi; |
c4edf708 | 2580 | int ret = 0; |
d3135ba3 | 2581 | struct prefix p; |
2582 | struct prefix *pp = &p; | |
2583 | afi_t afi = 0; | |
2584 | safi_t safi = 0; | |
1eb88002 | 2585 | char buf[PREFIX_STRLEN]; |
d3135ba3 | 2586 | |
2587 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2588 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2589 | |
1eb88002 | 2590 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2591 | zlog_debug( |
5f0c5ec8 | 2592 | "vrf %s: unimport evpn prefix %s parent %p flags 0x%x", |
2593 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2594 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2595 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2596 | } |
2597 | ||
d3135ba3 | 2598 | /* Locate route within the VRF. */ |
2599 | /* NOTE: There is no RD here. */ | |
3714a385 | 2600 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2601 | afi = AFI_IP; |
2602 | safi = SAFI_UNICAST; | |
9bcb3eef | 2603 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2604 | } else { |
2605 | afi = AFI_IP6; | |
2606 | safi = SAFI_UNICAST; | |
9bcb3eef | 2607 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2608 | } |
2609 | ||
9bcb3eef | 2610 | if (!dest) |
d3135ba3 | 2611 | return 0; |
2612 | ||
2613 | /* Find matching route entry. */ | |
9bcb3eef | 2614 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2615 | if (pi->extra |
2616 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2617 | break; |
2618 | ||
40381db7 | 2619 | if (!pi) |
d3135ba3 | 2620 | return 0; |
2621 | ||
5f0c5ec8 | 2622 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2623 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2624 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2625 | pi->flags); | |
5f0c5ec8 | 2626 | |
7452e879 | 2627 | /* Process for route leaking. */ |
2628 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2629 | ||
9bcb3eef | 2630 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2631 | safi); |
4c7a11d5 | 2632 | |
d3135ba3 | 2633 | /* Mark entry for deletion */ |
9bcb3eef | 2634 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2635 | |
2636 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2637 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2638 | |
2639 | /* Unlock route node. */ | |
9bcb3eef | 2640 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2641 | |
2642 | return ret; | |
2643 | } | |
2644 | ||
128ea8ab | 2645 | /* |
2646 | * Uninstall route entry from the VNI routing table and send message | |
2647 | * to zebra, if appropriate. | |
2648 | */ | |
d62a17ae | 2649 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2650 | const struct prefix_evpn *p, |
40381db7 | 2651 | struct bgp_path_info *parent_pi) |
128ea8ab | 2652 | { |
9bcb3eef | 2653 | struct bgp_dest *dest; |
40381db7 | 2654 | struct bgp_path_info *pi; |
9c7edc03 | 2655 | struct bgp_path_info *local_pi; |
d62a17ae | 2656 | int ret; |
c44ab6f1 AK |
2657 | struct prefix_evpn ad_evp; |
2658 | ||
2659 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2660 | * we need to create a different copy for the VNI | |
2661 | */ | |
2662 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2663 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2664 | parent_pi->attr->nexthop); | |
128ea8ab | 2665 | |
d62a17ae | 2666 | /* Locate route within the VNI. */ |
2667 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2668 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2669 | if (!dest) | |
d62a17ae | 2670 | return 0; |
128ea8ab | 2671 | |
d62a17ae | 2672 | /* Find matching route entry. */ |
9bcb3eef | 2673 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2674 | if (pi->extra |
2675 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2676 | break; |
128ea8ab | 2677 | |
40381db7 | 2678 | if (!pi) |
d62a17ae | 2679 | return 0; |
128ea8ab | 2680 | |
d62a17ae | 2681 | /* Mark entry for deletion */ |
9bcb3eef | 2682 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2683 | |
d62a17ae | 2684 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2685 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2686 | |
9c7edc03 AK |
2687 | /* if the best path is a local path with a non-zero ES |
2688 | * sync info against the local path may need to be updated | |
2689 | * when a remote path is deleted | |
2690 | */ | |
2691 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2692 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2693 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2694 | __func__); | |
2695 | ||
d62a17ae | 2696 | /* Unlock route node. */ |
9bcb3eef | 2697 | bgp_dest_unlock_node(dest); |
128ea8ab | 2698 | |
d62a17ae | 2699 | return ret; |
128ea8ab | 2700 | } |
2701 | ||
5ba238b7 MK |
2702 | /* |
2703 | * Given a route entry and a VRF, see if this route entry should be | |
2704 | * imported into the VRF i.e., RTs match. | |
2705 | */ | |
4b7e6066 | 2706 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2707 | struct bgp_path_info *pi) |
5ba238b7 | 2708 | { |
40381db7 | 2709 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2710 | struct ecommunity *ecom; |
2711 | int i; | |
2712 | ||
2713 | assert(attr); | |
2714 | /* Route should have valid RT to be even considered. */ | |
2715 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2716 | return 0; | |
2717 | ||
2718 | ecom = attr->ecommunity; | |
2719 | if (!ecom || !ecom->size) | |
2720 | return 0; | |
2721 | ||
2722 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2723 | * matches, we're done. | |
2724 | */ | |
2725 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2726 | uint8_t *pnt; |
2727 | uint8_t type, sub_type; | |
5ba238b7 MK |
2728 | struct ecommunity_val *eval; |
2729 | struct ecommunity_val eval_tmp; | |
2730 | struct vrf_irt_node *irt; | |
2731 | ||
2732 | /* Only deal with RTs */ | |
34540b0d | 2733 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2734 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2735 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2736 | type = *pnt++; |
2737 | sub_type = *pnt++; | |
2738 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2739 | continue; | |
2740 | ||
2741 | /* See if this RT matches specified VNIs import RTs */ | |
2742 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2743 | if (irt) |
5ba238b7 MK |
2744 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2745 | return 1; | |
2746 | ||
2747 | /* Also check for non-exact match. In this, we mask out the AS | |
2748 | * and | |
2749 | * only check on the local-admin sub-field. This is to | |
2750 | * facilitate using | |
2751 | * VNI as the RT for EBGP peering too. | |
2752 | */ | |
2753 | irt = NULL; | |
2754 | if (type == ECOMMUNITY_ENCODE_AS | |
2755 | || type == ECOMMUNITY_ENCODE_AS4 | |
2756 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2757 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2758 | mask_ecom_global_admin(&eval_tmp, eval); |
2759 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2760 | } | |
5d9cbca2 | 2761 | if (irt) |
5ba238b7 MK |
2762 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2763 | return 1; | |
2764 | } | |
2765 | ||
2766 | return 0; | |
2767 | } | |
2768 | ||
128ea8ab | 2769 | /* |
2770 | * Given a route entry and a VNI, see if this route entry should be | |
2771 | * imported into the VNI i.e., RTs match. | |
2772 | */ | |
d62a17ae | 2773 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2774 | struct bgp_path_info *pi) |
d62a17ae | 2775 | { |
40381db7 | 2776 | struct attr *attr = pi->attr; |
d62a17ae | 2777 | struct ecommunity *ecom; |
2778 | int i; | |
2779 | ||
2780 | assert(attr); | |
2781 | /* Route should have valid RT to be even considered. */ | |
2782 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2783 | return 0; | |
2784 | ||
2785 | ecom = attr->ecommunity; | |
2786 | if (!ecom || !ecom->size) | |
2787 | return 0; | |
2788 | ||
2789 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2790 | * matches, we're done. | |
2791 | */ | |
2792 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2793 | uint8_t *pnt; |
2794 | uint8_t type, sub_type; | |
d62a17ae | 2795 | struct ecommunity_val *eval; |
2796 | struct ecommunity_val eval_tmp; | |
2797 | struct irt_node *irt; | |
2798 | ||
2799 | /* Only deal with RTs */ | |
34540b0d | 2800 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2801 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2802 | + (i * ecom->unit_size)); |
d62a17ae | 2803 | type = *pnt++; |
2804 | sub_type = *pnt++; | |
2805 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2806 | continue; | |
2807 | ||
2808 | /* See if this RT matches specified VNIs import RTs */ | |
2809 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2810 | if (irt) |
d62a17ae | 2811 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2812 | return 1; | |
2813 | ||
2814 | /* Also check for non-exact match. In this, we mask out the AS | |
2815 | * and | |
2816 | * only check on the local-admin sub-field. This is to | |
2817 | * facilitate using | |
2818 | * VNI as the RT for EBGP peering too. | |
2819 | */ | |
2820 | irt = NULL; | |
2821 | if (type == ECOMMUNITY_ENCODE_AS | |
2822 | || type == ECOMMUNITY_ENCODE_AS4 | |
2823 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2824 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2825 | mask_ecom_global_admin(&eval_tmp, eval); |
2826 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2827 | } | |
b1ab0dfe | 2828 | if (irt) |
d62a17ae | 2829 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2830 | return 1; | |
2831 | } | |
2832 | ||
2833 | return 0; | |
128ea8ab | 2834 | } |
2835 | ||
47bf0432 CS |
2836 | /* This API will scan evpn routes for checking attribute's rmac |
2837 | * macthes with bgp instance router mac. It avoid installing | |
2838 | * route into bgp vrf table and remote rmac in bridge table. | |
2839 | */ | |
2840 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2841 | const struct prefix_evpn *evp, |
47bf0432 CS |
2842 | struct bgp_path_info *pi) |
2843 | { | |
2844 | /* evpn route could have learnt prior to L3vni has come up, | |
2845 | * perform rmac check before installing route and | |
2846 | * remote router mac. | |
2847 | * The route will be removed from global bgp table once | |
2848 | * SVI comes up with MAC and stored in hash, triggers | |
2849 | * bgp_mac_rescan_all_evpn_tables. | |
2850 | */ | |
05864da7 | 2851 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
2852 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
2853 | char buf1[PREFIX_STRLEN]; | |
2854 | char attr_str[BUFSIZ] = {0}; | |
2855 | ||
5022c833 | 2856 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 CS |
2857 | |
2858 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
2859 | __func__, bgp_vrf->vrf_id, | |
2860 | prefix2str(evp, buf1, sizeof(buf1)), | |
2861 | attr_str); | |
2862 | } | |
2863 | ||
2864 | return 1; | |
2865 | } | |
2866 | ||
2867 | return 0; | |
2868 | } | |
2869 | ||
5ba238b7 MK |
2870 | /* |
2871 | * Install or uninstall mac-ip routes are appropriate for this | |
2872 | * particular VRF. | |
2873 | */ | |
996c9314 | 2874 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2875 | { |
2876 | afi_t afi; | |
2877 | safi_t safi; | |
9bcb3eef | 2878 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 2879 | struct bgp_table *table; |
40381db7 | 2880 | struct bgp_path_info *pi; |
5ba238b7 MK |
2881 | int ret; |
2882 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 2883 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
2884 | |
2885 | afi = AFI_L2VPN; | |
2886 | safi = SAFI_EVPN; | |
5e53dce3 T |
2887 | bgp_evpn = bgp_get_evpn(); |
2888 | if (!bgp_evpn) | |
5ba238b7 MK |
2889 | return -1; |
2890 | ||
2891 | /* Walk entire global routing table and evaluate routes which could be | |
2892 | * imported into this VRF. Note that we need to loop through all global | |
2893 | * routes to determine which route matches the import rt on vrf | |
2894 | */ | |
9bcb3eef DS |
2895 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
2896 | rd_dest = bgp_route_next(rd_dest)) { | |
2897 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
2898 | if (!table) |
2899 | continue; | |
2900 | ||
9bcb3eef DS |
2901 | for (dest = bgp_table_top(table); dest; |
2902 | dest = bgp_route_next(dest)) { | |
2903 | const struct prefix_evpn *evp = | |
2904 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2905 | dest); | |
5ba238b7 | 2906 | |
1eb88002 | 2907 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2908 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2909 | || evp->prefix.route_type | |
2910 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2911 | continue; |
2912 | ||
1eb88002 | 2913 | /* if not a mac+ip route skip this route */ |
3714a385 | 2914 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2915 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2916 | continue; |
2917 | ||
9bcb3eef | 2918 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 2919 | pi = pi->next) { |
5ba238b7 | 2920 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2921 | * this VRF. |
2922 | */ | |
40381db7 DS |
2923 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2924 | && pi->type == ZEBRA_ROUTE_BGP | |
2925 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2926 | continue; |
2927 | ||
40381db7 | 2928 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
2929 | if (bgp_evpn_route_rmac_self_check( |
2930 | bgp_vrf, evp, pi)) | |
2931 | continue; | |
2932 | ||
5ba238b7 | 2933 | if (install) |
996c9314 | 2934 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 2935 | bgp_vrf, evp, pi); |
5ba238b7 | 2936 | else |
996c9314 | 2937 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 2938 | bgp_vrf, evp, pi); |
5ba238b7 MK |
2939 | |
2940 | if (ret) { | |
af4c2728 | 2941 | flog_err( |
e50f7cfd | 2942 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
2943 | "Failed to %s EVPN %s route in VRF %s", |
2944 | install ? "install" | |
2945 | : "uninstall", | |
2946 | prefix2str(evp, buf, | |
2947 | sizeof(buf)), | |
996c9314 LB |
2948 | vrf_id_to_name( |
2949 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2950 | return ret; |
2951 | } | |
2952 | } | |
2953 | } | |
2954 | } | |
2955 | } | |
2956 | ||
2957 | return 0; | |
2958 | } | |
2959 | ||
128ea8ab | 2960 | /* |
2961 | * Install or uninstall routes of specified type that are appropriate for this | |
2962 | * particular VNI. | |
2963 | */ | |
d62a17ae | 2964 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2965 | struct bgpevpn *vpn, | |
2966 | bgp_evpn_route_type rtype, | |
2967 | int install) | |
2968 | { | |
0291c246 MK |
2969 | afi_t afi; |
2970 | safi_t safi; | |
9bcb3eef | 2971 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 2972 | struct bgp_table *table; |
40381db7 | 2973 | struct bgp_path_info *pi; |
0291c246 | 2974 | int ret; |
d62a17ae | 2975 | |
2976 | afi = AFI_L2VPN; | |
2977 | safi = SAFI_EVPN; | |
2978 | ||
2979 | /* Walk entire global routing table and evaluate routes which could be | |
2980 | * imported into this VPN. Note that we cannot just look at the routes | |
2981 | * for | |
2982 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2983 | * RD. | |
2984 | */ | |
2985 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
2986 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
2987 | rd_dest = bgp_route_next(rd_dest)) { | |
2988 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 2989 | if (!table) |
2990 | continue; | |
2991 | ||
9bcb3eef DS |
2992 | for (dest = bgp_table_top(table); dest; |
2993 | dest = bgp_route_next(dest)) { | |
b54892e0 | 2994 | const struct prefix_evpn *evp = |
9bcb3eef DS |
2995 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
2996 | dest); | |
d62a17ae | 2997 | |
2998 | if (evp->prefix.route_type != rtype) | |
2999 | continue; | |
3000 | ||
9bcb3eef | 3001 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3002 | pi = pi->next) { |
d62a17ae | 3003 | /* Consider "valid" remote routes applicable for |
3004 | * this VNI. */ | |
40381db7 DS |
3005 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3006 | && pi->type == ZEBRA_ROUTE_BGP | |
3007 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3008 | continue; |
3009 | ||
40381db7 | 3010 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3011 | if (install) |
3012 | ret = install_evpn_route_entry( | |
40381db7 | 3013 | bgp, vpn, evp, pi); |
d62a17ae | 3014 | else |
3015 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3016 | bgp, vpn, evp, pi); |
d62a17ae | 3017 | |
3018 | if (ret) { | |
af4c2728 | 3019 | flog_err( |
e50f7cfd | 3020 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3021 | "%u: Failed to %s EVPN %s route in VNI %u", |
3022 | bgp->vrf_id, | |
3023 | install ? "install" | |
3024 | : "uninstall", | |
3025 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3026 | ? "MACIP" | |
3027 | : "IMET", | |
3028 | vpn->vni); | |
3029 | return ret; | |
3030 | } | |
3031 | } | |
3032 | } | |
3033 | } | |
3034 | } | |
3035 | ||
3036 | return 0; | |
128ea8ab | 3037 | } |
3038 | ||
5ba238b7 | 3039 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3040 | * is invoked upon l3vni-add or l3vni import rt change |
3041 | */ | |
5ba238b7 MK |
3042 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3043 | { | |
3044 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3045 | return 0; | |
3046 | } | |
3047 | ||
128ea8ab | 3048 | /* |
3049 | * Install any existing remote routes applicable for this VNI into its | |
3050 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3051 | * RT is changed. | |
3052 | */ | |
d62a17ae | 3053 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3054 | { |
d62a17ae | 3055 | int ret; |
128ea8ab | 3056 | |
d62a17ae | 3057 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3058 | * for this VNI. | |
3059 | */ | |
3060 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3061 | 1); | |
3062 | if (ret) | |
3063 | return ret; | |
128ea8ab | 3064 | |
c44ab6f1 AK |
3065 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3066 | 1); | |
3067 | if (ret) | |
3068 | return ret; | |
3069 | ||
d62a17ae | 3070 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3071 | 1); | |
128ea8ab | 3072 | } |
3073 | ||
5ba238b7 MK |
3074 | /* uninstall routes from l3vni vrf. */ |
3075 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3076 | { | |
3077 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3078 | return 0; | |
3079 | } | |
3080 | ||
90e60aa7 | 3081 | /* |
3082 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3083 | * this is invoked is upon an import RT change. | |
3084 | */ | |
d62a17ae | 3085 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3086 | { |
d62a17ae | 3087 | int ret; |
90e60aa7 | 3088 | |
d62a17ae | 3089 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3090 | * applicable | |
3091 | * for this VNI. | |
3092 | */ | |
3093 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3094 | 0); | |
3095 | if (ret) | |
3096 | return ret; | |
90e60aa7 | 3097 | |
c44ab6f1 AK |
3098 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3099 | 1); | |
3100 | if (ret) | |
3101 | return ret; | |
3102 | ||
3103 | ||
d62a17ae | 3104 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3105 | 0); | |
90e60aa7 | 3106 | } |
3107 | ||
d3135ba3 | 3108 | /* |
3109 | * Install or uninstall route in matching VRFs (list). | |
3110 | */ | |
3111 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3112 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3113 | struct bgp_path_info *pi, |
d3135ba3 | 3114 | struct list *vrfs, int install) |
3115 | { | |
3116 | char buf[PREFIX2STR_BUFFER]; | |
3117 | struct bgp *bgp_vrf; | |
3118 | struct listnode *node, *nnode; | |
3119 | ||
90264d64 | 3120 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3121 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3122 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3123 | return 0; |
3124 | ||
90264d64 | 3125 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3126 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3127 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3128 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3129 | return 0; |
3130 | ||
d3135ba3 | 3131 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3132 | int ret; | |
3133 | ||
3134 | if (install) | |
40381db7 | 3135 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3136 | else |
996c9314 | 3137 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3138 | pi); |
d3135ba3 | 3139 | |
3140 | if (ret) { | |
e50f7cfd | 3141 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3142 | "%u: Failed to %s prefix %s in VRF %s", |
3143 | bgp_def->vrf_id, | |
3144 | install ? "install" : "uninstall", | |
3145 | prefix2str(evp, buf, sizeof(buf)), | |
3146 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3147 | return ret; |
3148 | } | |
3149 | } | |
3150 | ||
3151 | return 0; | |
3152 | } | |
3153 | ||
128ea8ab | 3154 | /* |
3155 | * Install or uninstall route in matching VNIs (list). | |
3156 | */ | |
d62a17ae | 3157 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3158 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3159 | struct bgp_path_info *pi, |
d62a17ae | 3160 | struct list *vnis, int install) |
128ea8ab | 3161 | { |
d62a17ae | 3162 | struct bgpevpn *vpn; |
3163 | struct listnode *node, *nnode; | |
128ea8ab | 3164 | |
d62a17ae | 3165 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3166 | int ret; | |
128ea8ab | 3167 | |
d62a17ae | 3168 | if (!is_vni_live(vpn)) |
3169 | continue; | |
128ea8ab | 3170 | |
d62a17ae | 3171 | if (install) |
40381db7 | 3172 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3173 | else |
40381db7 | 3174 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3175 | |
d62a17ae | 3176 | if (ret) { |
1c50c1c0 QY |
3177 | flog_err(EC_BGP_EVPN_FAIL, |
3178 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3179 | bgp->vrf_id, install ? "install" : "uninstall", | |
3180 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3181 | ? "MACIP" | |
3182 | : "IMET", | |
3183 | vpn->vni); | |
d62a17ae | 3184 | return ret; |
3185 | } | |
3186 | } | |
128ea8ab | 3187 | |
d62a17ae | 3188 | return 0; |
128ea8ab | 3189 | } |
3190 | ||
3191 | /* | |
50f74cf1 | 3192 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3193 | */ |
d62a17ae | 3194 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 3195 | const struct prefix *p, |
40381db7 | 3196 | struct bgp_path_info *pi, int import) |
d62a17ae | 3197 | { |
3198 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3199 | struct attr *attr = pi->attr; |
d62a17ae | 3200 | struct ecommunity *ecom; |
3201 | int i; | |
c44ab6f1 | 3202 | struct prefix_evpn ad_evp; |
d62a17ae | 3203 | |
3204 | assert(attr); | |
3205 | ||
50f74cf1 | 3206 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3207 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3208 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3209 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3210 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3211 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3212 | return 0; |
3213 | ||
3214 | /* If we don't have Route Target, nothing much to do. */ | |
3215 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3216 | return 0; | |
3217 | ||
c44ab6f1 AK |
3218 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3219 | * we need to create a different copy for the VNI | |
3220 | */ | |
3221 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3222 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3223 | ||
d62a17ae | 3224 | ecom = attr->ecommunity; |
3225 | if (!ecom || !ecom->size) | |
3226 | return -1; | |
3227 | ||
50f74cf1 | 3228 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3229 | * attached to the route */ | |
d62a17ae | 3230 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3231 | uint8_t *pnt; |
3232 | uint8_t type, sub_type; | |
d62a17ae | 3233 | struct ecommunity_val *eval; |
3234 | struct ecommunity_val eval_tmp; | |
996c9314 | 3235 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3236 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3237 | struct bgp_evpn_es *es; |
d62a17ae | 3238 | |
3239 | /* Only deal with RTs */ | |
34540b0d | 3240 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3241 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3242 | + (i * ecom->unit_size)); |
d62a17ae | 3243 | type = *pnt++; |
3244 | sub_type = *pnt++; | |
3245 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3246 | continue; | |
3247 | ||
50f74cf1 | 3248 | /* |
3249 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3250 | * IMET route is imported into VNI table. | |
3251 | * prefix routes are imported into VRF table. | |
523cafc4 | 3252 | */ |
50f74cf1 | 3253 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3254 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3255 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3256 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3257 | |
50f74cf1 | 3258 | irt = lookup_import_rt(bgp, eval); |
3259 | if (irt) | |
40381db7 DS |
3260 | install_uninstall_route_in_vnis( |
3261 | bgp, afi, safi, evp, pi, irt->vnis, | |
3262 | import); | |
50f74cf1 | 3263 | |
3264 | vrf_irt = lookup_vrf_import_rt(eval); | |
3265 | if (vrf_irt) | |
40381db7 DS |
3266 | install_uninstall_route_in_vrfs( |
3267 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3268 | import); | |
50f74cf1 | 3269 | |
3270 | /* Also check for non-exact match. | |
3271 | * In this, we mask out the AS and | |
3272 | * only check on the local-admin sub-field. | |
3273 | * This is to facilitate using | |
3274 | * VNI as the RT for EBGP peering too. | |
3275 | */ | |
3276 | irt = NULL; | |
3277 | vrf_irt = NULL; | |
3278 | if (type == ECOMMUNITY_ENCODE_AS | |
3279 | || type == ECOMMUNITY_ENCODE_AS4 | |
3280 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3281 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3282 | mask_ecom_global_admin(&eval_tmp, eval); |
3283 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3284 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3285 | } | |
3286 | ||
3287 | if (irt) | |
40381db7 DS |
3288 | install_uninstall_route_in_vnis( |
3289 | bgp, afi, safi, evp, pi, irt->vnis, | |
3290 | import); | |
50f74cf1 | 3291 | if (vrf_irt) |
40381db7 DS |
3292 | install_uninstall_route_in_vrfs( |
3293 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3294 | import); | |
50f74cf1 | 3295 | } |
3296 | ||
3297 | /* es route is imported into the es table */ | |
3298 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3299 | ||
3300 | /* we will match based on the entire esi to avoid | |
3301 | * imoort of an es route for esi2 into esi1 | |
3302 | */ | |
c44ab6f1 | 3303 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3304 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3305 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3306 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3307 | } |
d62a17ae | 3308 | } |
3309 | ||
3310 | return 0; | |
128ea8ab | 3311 | } |
3312 | ||
2bb9eff4 DS |
3313 | /* |
3314 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3315 | * routes | |
3316 | */ | |
80b140af MK |
3317 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3318 | { | |
5fd9c12b KA |
3319 | /* Delete ipv4 default route and withdraw from peers */ |
3320 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3321 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3322 | SAFI_UNICAST, false); | |
3323 | ||
80b140af | 3324 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3325 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3326 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3327 | |
5fd9c12b KA |
3328 | /* Delete ipv6 default route and withdraw from peers */ |
3329 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3330 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3331 | SAFI_UNICAST, false); | |
3332 | ||
80b140af | 3333 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3334 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3335 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3336 | } |
3337 | ||
2bb9eff4 DS |
3338 | /* |
3339 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3340 | * routes | |
3341 | */ | |
5394a276 | 3342 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3343 | { |
5394a276 CS |
3344 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3345 | ||
3346 | bgp_evpn = bgp_get_evpn(); | |
3347 | if (!bgp_evpn) | |
3348 | return; | |
3349 | ||
80b140af | 3350 | /* update all ipv4 routes */ |
fdf19f06 MK |
3351 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3352 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3353 | |
5fd9c12b KA |
3354 | /* update ipv4 default route and withdraw from peers */ |
3355 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3356 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3357 | SAFI_UNICAST, true); | |
3358 | ||
80b140af | 3359 | /* update all ipv6 routes */ |
fdf19f06 MK |
3360 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3361 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3362 | |
3363 | /* update ipv6 default route and withdraw from peers */ | |
3364 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3365 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3366 | SAFI_UNICAST, true); | |
3367 | ||
80b140af MK |
3368 | } |
3369 | ||
676f83b9 | 3370 | /* |
3371 | * update and advertise local routes for a VRF as type-5 routes. | |
3372 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3373 | * done in the global route table using the routes which already exist in the | |
3374 | * VRF routing table | |
3375 | */ | |
80b140af | 3376 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3377 | { |
80b140af MK |
3378 | /* skip if the RD is configured */ |
3379 | if (is_vrf_rd_configured(bgp_vrf)) | |
3380 | return; | |
3381 | ||
3382 | /* derive the RD for the VRF based on new router-id */ | |
3383 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3384 | ||
3385 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3386 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3387 | } |
3388 | ||
3389 | /* | |
3390 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3391 | * This is invoked upon VRF RD change. The processing is done only from global | |
3392 | * table. | |
3393 | */ | |
80b140af | 3394 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3395 | { |
80b140af MK |
3396 | /* skip if the RD is configured */ |
3397 | if (is_vrf_rd_configured(bgp_vrf)) | |
3398 | return; | |
3399 | ||
3400 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3401 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3402 | } |
3403 | ||
90e60aa7 | 3404 | /* |
3405 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3406 | * change. Note that the processing is done only on the global route table | |
3407 | * using routes that already exist in the per-VNI table. | |
3408 | */ | |
d62a17ae | 3409 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3410 | { | |
3411 | struct prefix_evpn p; | |
9bcb3eef | 3412 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3413 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3414 | struct attr *attr; |
3415 | afi_t afi = AFI_L2VPN; | |
3416 | safi_t safi = SAFI_EVPN; | |
3417 | ||
3418 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3419 | * attributes to create and advertise the type-3 route for this VNI | |
3420 | * in the global table. | |
fd069644 DS |
3421 | * |
3422 | * RT-3 only if doing head-end replication | |
d62a17ae | 3423 | */ |
833b8a50 AK |
3424 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3425 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3426 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3427 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3428 | if (!dest) /* unexpected */ | |
fd069644 | 3429 | return 0; |
9bcb3eef | 3430 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3431 | if (pi->peer == bgp->peer_self && |
3432 | pi->type == ZEBRA_ROUTE_BGP | |
3433 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3434 | break; | |
3435 | if (!pi) /* unexpected */ | |
3436 | return 0; | |
3437 | attr = pi->attr; | |
d62a17ae | 3438 | |
9c7edc03 AK |
3439 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3440 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3441 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3442 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3443 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3444 | |
fd069644 | 3445 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3446 | bgp_process(bgp, global_dest, afi, safi); |
3447 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3448 | } |
d62a17ae | 3449 | |
3450 | /* Now, walk this VNI's route table and use the route and its attribute | |
3451 | * to create and schedule route in global table. | |
3452 | */ | |
9bcb3eef DS |
3453 | for (dest = bgp_table_top(vpn->route_table); dest; |
3454 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3455 | const struct prefix_evpn *evp = |
9bcb3eef | 3456 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3457 | |
3458 | /* Identify MAC-IP local routes. */ | |
3459 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3460 | continue; | |
3461 | ||
9bcb3eef | 3462 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3463 | if (pi->peer == bgp->peer_self |
3464 | && pi->type == ZEBRA_ROUTE_BGP | |
3465 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3466 | break; |
40381db7 | 3467 | if (!pi) |
d62a17ae | 3468 | continue; |
3469 | ||
3470 | /* Create route in global routing table using this route entry's | |
3471 | * attribute. | |
3472 | */ | |
40381db7 | 3473 | attr = pi->attr; |
c44ab6f1 | 3474 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3475 | evp, &vpn->prd); |
9bcb3eef | 3476 | assert(global_dest); |
9c7edc03 AK |
3477 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, 1, |
3478 | &global_pi, 0, | |
3479 | mac_mobility_seqnum(attr), | |
3480 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3481 | |
3482 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3483 | bgp_process(bgp, global_dest, afi, safi); |
3484 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3485 | } |
3486 | ||
3487 | return 0; | |
90e60aa7 | 3488 | } |
3489 | ||
3490 | /* | |
3491 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3492 | * table. Invoked upon router-id change. | |
3493 | */ | |
d62a17ae | 3494 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3495 | { |
d62a17ae | 3496 | int ret; |
3497 | struct prefix_evpn p; | |
9bcb3eef | 3498 | struct bgp_dest *global_dest; |
40381db7 | 3499 | struct bgp_path_info *pi; |
d62a17ae | 3500 | afi_t afi = AFI_L2VPN; |
3501 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3502 | |
d62a17ae | 3503 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3504 | * for this VNI - from the global table. | |
3505 | */ | |
3506 | ret = delete_global_type2_routes(bgp, vpn); | |
3507 | if (ret) | |
3508 | return ret; | |
90e60aa7 | 3509 | |
d62a17ae | 3510 | /* Remove type-3 route for this VNI from global table. */ |
3511 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3512 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3513 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3514 | if (global_dest) { |
d62a17ae | 3515 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3516 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3517 | |
d62a17ae | 3518 | /* Schedule for processing - withdraws to peers happen from |
3519 | * this table. | |
3520 | */ | |
40381db7 | 3521 | if (pi) |
9bcb3eef DS |
3522 | bgp_process(bgp, global_dest, afi, safi); |
3523 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3524 | } |
90e60aa7 | 3525 | |
d62a17ae | 3526 | return 0; |
90e60aa7 | 3527 | } |
3528 | ||
2d48ee25 | 3529 | /* |
3530 | * Handle router-id change. Update and advertise local routes corresponding | |
3531 | * to this VNI from peers. Note that this is invoked after updating the | |
3532 | * router-id. The routes in the per-VNI table are used to create routes in | |
3533 | * the global table and schedule them. | |
3534 | */ | |
e3b78da8 | 3535 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3536 | { |
e3b78da8 | 3537 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3538 | |
d62a17ae | 3539 | /* Skip VNIs with configured RD. */ |
3540 | if (is_rd_configured(vpn)) | |
3541 | return; | |
2d48ee25 | 3542 | |
d62a17ae | 3543 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3544 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3545 | } |
3546 | ||
3547 | /* | |
3548 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3549 | * to this VNI from peers. Note that this is invoked prior to updating | |
3550 | * the router-id and is done only on the global route table, the routes | |
3551 | * are needed in the per-VNI table to re-advertise with new router id. | |
3552 | */ | |
e3b78da8 | 3553 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3554 | { |
e3b78da8 | 3555 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3556 | |
d62a17ae | 3557 | /* Skip VNIs with configured RD. */ |
3558 | if (is_rd_configured(vpn)) | |
3559 | return; | |
2d48ee25 | 3560 | |
d62a17ae | 3561 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3562 | } |
3563 | ||
fd069644 DS |
3564 | /* |
3565 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3566 | * This is invoked upon flooding mode changing to head-end replication. | |
3567 | */ | |
e3b78da8 | 3568 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3569 | { |
e3b78da8 | 3570 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3571 | struct bgp *bgp = data; |
3572 | struct prefix_evpn p; | |
3573 | ||
833b8a50 AK |
3574 | if (!vpn || !is_vni_live(vpn) || |
3575 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3576 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3577 | return; |
3578 | ||
3579 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3580 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3581 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3582 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3583 | } | |
3584 | ||
3585 | /* | |
3586 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3587 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3588 | */ | |
e3b78da8 | 3589 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3590 | { |
e3b78da8 | 3591 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3592 | struct bgp *bgp = data; |
3593 | struct prefix_evpn p; | |
3594 | ||
3595 | if (!vpn || !is_vni_live(vpn)) | |
3596 | return; | |
3597 | ||
3598 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3599 | delete_evpn_route(bgp, vpn, &p); | |
3600 | } | |
3601 | ||
128ea8ab | 3602 | /* |
3603 | * Process received EVPN type-2 route (advertise or withdraw). | |
3604 | */ | |
d62a17ae | 3605 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3606 | struct attr *attr, uint8_t *pfx, int psize, |
3607 | uint32_t addpath_id) | |
d62a17ae | 3608 | { |
3609 | struct prefix_rd prd; | |
e121d831 QY |
3610 | struct prefix_evpn p = {}; |
3611 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3612 | uint8_t ipaddr_len; |
3613 | uint8_t macaddr_len; | |
e121d831 QY |
3614 | /* holds the VNI(s) as in packet */ |
3615 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3616 | uint32_t num_labels = 0; |
554cd77a | 3617 | uint32_t eth_tag; |
d62a17ae | 3618 | int ret; |
3619 | ||
3620 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3621 | * additional 3 bytes if there is a second label (VNI): | |
3622 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3623 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3624 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3625 | */ | |
3626 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3627 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3628 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3629 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3630 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3631 | return -1; |
3632 | } | |
3633 | ||
e121d831 QY |
3634 | struct stream *pkt = stream_new(psize); |
3635 | stream_put(pkt, pfx, psize); | |
554cd77a | 3636 | |
d62a17ae | 3637 | /* Make prefix_rd */ |
3638 | prd.family = AF_UNSPEC; | |
3639 | prd.prefixlen = 64; | |
e121d831 QY |
3640 | |
3641 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3642 | |
3643 | /* Make EVPN prefix. */ | |
b03b8898 | 3644 | p.family = AF_EVPN; |
50f74cf1 | 3645 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3646 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3647 | ||
554cd77a | 3648 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3649 | if (attr) { |
e121d831 QY |
3650 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3651 | ||
9c7edc03 AK |
3652 | if (bgp_evpn_is_esi_local(&attr->esi)) |
3653 | attr->es_flags |= ATTR_ES_IS_LOCAL; | |
3654 | else | |
3655 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3656 | } else { |
3657 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3658 | } |
d62a17ae | 3659 | |
554cd77a | 3660 | /* Copy Ethernet Tag */ |
e121d831 | 3661 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3662 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3663 | |
3664 | /* Get the MAC Addr len */ | |
e121d831 | 3665 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3666 | |
3667 | /* Get the MAC Addr */ | |
28328ea9 | 3668 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3669 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3670 | } else { |
af4c2728 | 3671 | flog_err( |
e50f7cfd | 3672 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3673 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3674 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3675 | goto fail; |
d62a17ae | 3676 | } |
3677 | ||
3678 | ||
3679 | /* Get the IP. */ | |
e121d831 QY |
3680 | STREAM_GETC(pkt, ipaddr_len); |
3681 | ||
d62a17ae | 3682 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3683 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3684 | flog_err( |
e50f7cfd | 3685 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3686 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3687 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3688 | goto fail; |
d62a17ae | 3689 | } |
3690 | ||
3691 | if (ipaddr_len) { | |
3692 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3693 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3694 | ? IPADDR_V4 |
3695 | : IPADDR_V6; | |
e121d831 | 3696 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3697 | } |
d62a17ae | 3698 | |
b57ba6d2 | 3699 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3700 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3701 | num_labels++; |
e121d831 | 3702 | |
b57ba6d2 | 3703 | /* Do we have a second VNI? */ |
e121d831 | 3704 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3705 | num_labels++; |
e121d831 | 3706 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3707 | } |
d62a17ae | 3708 | |
3709 | /* Process the route. */ | |
3710 | if (attr) | |
3711 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3712 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3713 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3714 | else |
3715 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3716 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3717 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3718 | goto done; |
3719 | ||
3720 | fail: | |
3721 | stream_failure: | |
3722 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3723 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3724 | peer->bgp->vrf_id, peer->host); | |
3725 | ret = -1; | |
3726 | done: | |
3727 | stream_free(pkt); | |
d62a17ae | 3728 | return ret; |
128ea8ab | 3729 | } |
3730 | ||
3731 | /* | |
3732 | * Process received EVPN type-3 route (advertise or withdraw). | |
3733 | */ | |
d62a17ae | 3734 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3735 | struct attr *attr, uint8_t *pfx, int psize, |
3736 | uint32_t addpath_id) | |
d62a17ae | 3737 | { |
3738 | struct prefix_rd prd; | |
3739 | struct prefix_evpn p; | |
d7c0a89a | 3740 | uint8_t ipaddr_len; |
554cd77a | 3741 | uint32_t eth_tag; |
d62a17ae | 3742 | int ret; |
3743 | ||
3744 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3745 | * IP len (1) and IP (4 or 16). | |
3746 | */ | |
3747 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3748 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3749 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3750 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3751 | return -1; |
3752 | } | |
3753 | ||
7fd077aa | 3754 | /* If PMSI is present, log if it is anything other than IR. |
3755 | * Note: We just simply ignore the values as it is not clear if | |
3756 | * doing anything else is better. | |
3757 | */ | |
3758 | if (attr && | |
3759 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
3760 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
3761 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3762 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
3763 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3764 | peer->bgp->vrf_id, peer->host, | |
3765 | attr->pmsi_tnl_type); | |
7fd077aa | 3766 | } |
3767 | } | |
3768 | ||
d62a17ae | 3769 | /* Make prefix_rd */ |
3770 | prd.family = AF_UNSPEC; | |
3771 | prd.prefixlen = 64; | |
3772 | memcpy(&prd.val, pfx, 8); | |
3773 | pfx += 8; | |
3774 | ||
3775 | /* Make EVPN prefix. */ | |
3776 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3777 | p.family = AF_EVPN; |
50f74cf1 | 3778 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3779 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3780 | ||
554cd77a VB |
3781 | /* Copy Ethernet Tag */ |
3782 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3783 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3784 | pfx += 4; |
3785 | ||
3786 | /* Get the IP. */ | |
3787 | ipaddr_len = *pfx++; | |
3788 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3789 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3790 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3791 | } else { |
af4c2728 | 3792 | flog_err( |
e50f7cfd | 3793 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3794 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3795 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3796 | return -1; | |
3797 | } | |
3798 | ||
3799 | /* Process the route. */ | |
3800 | if (attr) | |
3801 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3802 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3803 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3804 | else |
3805 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3806 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3807 | &prd, NULL, 0, NULL); |
d62a17ae | 3808 | return ret; |
128ea8ab | 3809 | } |
3810 | ||
3811 | /* | |
3812 | * Process received EVPN type-5 route (advertise or withdraw). | |
3813 | */ | |
d62a17ae | 3814 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 3815 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 3816 | uint32_t addpath_id) |
d62a17ae | 3817 | { |
3818 | struct prefix_rd prd; | |
3819 | struct prefix_evpn p; | |
3820 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3821 | uint8_t ippfx_len; |
3822 | uint32_t eth_tag; | |
b57ba6d2 | 3823 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3824 | int ret; |
c6ec0c74 KA |
3825 | afi_t gw_afi; |
3826 | bool is_valid_update = false; | |
d62a17ae | 3827 | |
3828 | /* Type-5 route should be 34 or 58 bytes: | |
3829 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3830 | * GW (4 or 16) and VNI (3). | |
3831 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3832 | */ | |
3833 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3834 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3835 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3836 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3837 | return -1; |
3838 | } | |
3839 | ||
3840 | /* Make prefix_rd */ | |
3841 | prd.family = AF_UNSPEC; | |
3842 | prd.prefixlen = 64; | |
3843 | memcpy(&prd.val, pfx, 8); | |
3844 | pfx += 8; | |
3845 | ||
3846 | /* Make EVPN prefix. */ | |
3847 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3848 | p.family = AF_EVPN; |
50f74cf1 | 3849 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3850 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3851 | ||
3852 | /* Additional information outside of prefix - ESI and GW IP */ | |
3853 | memset(&evpn, 0, sizeof(evpn)); | |
3854 | ||
3855 | /* Fetch ESI */ | |
c44ab6f1 AK |
3856 | if (attr) |
3857 | memcpy(&attr->esi, pfx, sizeof(esi_t)); | |
3858 | pfx += ESI_BYTES; | |
d62a17ae | 3859 | |
3860 | /* Fetch Ethernet Tag. */ | |
3861 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3862 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3863 | pfx += 4; |
3864 | ||
3865 | /* Fetch IP prefix length. */ | |
3866 | ippfx_len = *pfx++; | |
3867 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3868 | flog_err( |
e50f7cfd | 3869 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3870 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3871 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3872 | return -1; | |
3873 | } | |
3714a385 | 3874 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3875 | |
3876 | /* Determine IPv4 or IPv6 prefix */ | |
3877 | /* Since the address and GW are from the same family, this just becomes | |
3878 | * a simple check on the total size. | |
3879 | */ | |
3880 | if (psize == 34) { | |
3714a385 | 3881 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3882 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3883 | pfx += 4; |
3884 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3885 | pfx += 4; | |
c6ec0c74 | 3886 | gw_afi = AF_INET; |
d62a17ae | 3887 | } else { |
3714a385 | 3888 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3889 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3890 | pfx += 16; |
3891 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3892 | pfx += 16; | |
c6ec0c74 | 3893 | gw_afi = AF_INET6; |
d62a17ae | 3894 | } |
3895 | ||
b57ba6d2 MK |
3896 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3897 | memset(&label, 0, sizeof(label)); | |
3898 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3899 | |
3900 | /* | |
3901 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3902 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3903 | * field | |
6b11bd8d | 3904 | */ |
d62a17ae | 3905 | |
c6ec0c74 KA |
3906 | if (attr) { |
3907 | is_valid_update = true; | |
0a50c248 | 3908 | if (is_zero_mac(&attr->rmac) && |
c6ec0c74 KA |
3909 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) |
3910 | is_valid_update = false; | |
3911 | ||
3912 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
3913 | is_valid_update = false; | |
3914 | } | |
3915 | ||
d62a17ae | 3916 | /* Process the route. */ |
c6ec0c74 | 3917 | if (is_valid_update) |
d62a17ae | 3918 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
3919 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3920 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3921 | else |
3922 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3923 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3924 | &prd, &label, 1, &evpn); |
d62a17ae | 3925 | |
3926 | return ret; | |
3927 | } | |
3928 | ||
5f040085 DS |
3929 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
3930 | const struct prefix_rd *prd, | |
3931 | mpls_label_t *label, uint32_t num_labels, | |
3932 | struct attr *attr) | |
d62a17ae | 3933 | { |
3934 | int len; | |
3935 | char temp[16]; | |
5f040085 | 3936 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 3937 | |
3938 | memset(&temp, 0, 16); | |
b03b8898 | 3939 | if (p->family != AF_EVPN) |
d62a17ae | 3940 | return; |
3941 | p_evpn_p = &(p->u.prefix_evpn); | |
3942 | ||
e9fc2840 | 3943 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3944 | IP and GW-IP have to be both ipv4 or ipv6 |
3945 | */ | |
3714a385 | 3946 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3947 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3948 | else |
e9fc2840 | 3949 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3950 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3951 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3952 | stream_put(s, prd->val, 8); | |
0af35d90 | 3953 | if (attr) |
c44ab6f1 | 3954 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 3955 | else |
c44ab6f1 | 3956 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 3957 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3958 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3959 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3960 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3961 | else |
3714a385 | 3962 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3963 | if (attr) { |
3714a385 | 3964 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3965 | stream_put_ipv4(s, |
3966 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3967 | else | |
3968 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3969 | } else { | |
3714a385 | 3970 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3971 | stream_put_ipv4(s, 0); |
3972 | else | |
3973 | stream_put(s, &temp, 16); | |
3974 | } | |
3975 | ||
b57ba6d2 | 3976 | if (num_labels) |
d62a17ae | 3977 | stream_put(s, label, 3); |
3978 | else | |
3979 | stream_put3(s, 0); | |
128ea8ab | 3980 | } |
3981 | ||
3982 | /* | |
3983 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3984 | */ | |
e3b78da8 | 3985 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 3986 | { |
e3b78da8 | 3987 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 3988 | |
d62a17ae | 3989 | /* Remove EVPN routes and schedule for processing. */ |
3990 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3991 | |
d62a17ae | 3992 | /* Clear "live" flag and see if hash needs to be freed. */ |
3993 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3994 | if (!is_vni_configured(vpn)) | |
3995 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3996 | } |
3997 | ||
3998 | /* | |
3999 | * Free a VNI entry; iterator function called during cleanup. | |
4000 | */ | |
e3b78da8 | 4001 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4002 | { |
e3b78da8 | 4003 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4004 | |
d62a17ae | 4005 | delete_all_vni_routes(bgp, vpn); |
4006 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4007 | } |
4008 | ||
c581d8b0 MK |
4009 | /* |
4010 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4011 | */ | |
4012 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4013 | { | |
5e53dce3 | 4014 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4015 | |
c581d8b0 | 4016 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4017 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4018 | ||
4019 | /* Map RT to VRF */ | |
5e53dce3 T |
4020 | bgp_evpn = bgp_get_evpn(); |
4021 | if (!bgp_evpn) | |
10ebe1ab MK |
4022 | return; |
4023 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4024 | } |
4025 | ||
4026 | /* | |
4027 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4028 | */ | |
4029 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4030 | { | |
4031 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4032 | } | |
4033 | ||
4034 | /* | |
4035 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4036 | */ | |
4037 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4038 | { | |
4039 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4040 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4041 | } | |
4042 | ||
4043 | /* | |
4044 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4045 | */ | |
4046 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4047 | { | |
4048 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4049 | } | |
128ea8ab | 4050 | |
f1f8b53c MK |
4051 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4052 | { | |
5e53dce3 | 4053 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4054 | struct listnode *node = NULL; |
4055 | struct bgpevpn *vpn = NULL; | |
4056 | ||
5e53dce3 T |
4057 | bgp_evpn = bgp_get_evpn(); |
4058 | if (!bgp_evpn) | |
f1f8b53c MK |
4059 | return; |
4060 | ||
4992b4ae MK |
4061 | /* update all type-5 routes */ |
4062 | update_advertise_vrf_routes(bgp_vrf); | |
4063 | ||
4064 | /* update all type-2 routes */ | |
f1f8b53c | 4065 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4066 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4067 | } |
4068 | ||
bf1061d8 VB |
4069 | /* |
4070 | * Handle autort change for a given VNI. | |
4071 | */ | |
e3b78da8 | 4072 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4073 | { |
e3b78da8 | 4074 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4075 | |
bf1061d8 VB |
4076 | if (!is_import_rt_configured(vpn)) { |
4077 | if (is_vni_live(vpn)) | |
4078 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4079 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4080 | list_delete_all_node(vpn->import_rtl); |
4081 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4082 | if (is_vni_live(vpn)) | |
4083 | bgp_evpn_install_routes(bgp, vpn); | |
4084 | } | |
4085 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4086 | list_delete_all_node(vpn->export_rtl); |
4087 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4088 | if (is_vni_live(vpn)) | |
4089 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4090 | } | |
4091 | } | |
4092 | ||
128ea8ab | 4093 | /* |
4094 | * Public functions. | |
4095 | */ | |
4096 | ||
5424b7ba | 4097 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4098 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4099 | afi_t afi, safi_t safi) |
4100 | { | |
4101 | int ret = 0; | |
4102 | struct prefix_evpn evp; | |
4103 | char buf[PREFIX_STRLEN]; | |
4104 | ||
31310b25 | 4105 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4106 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4107 | if (ret) { | |
af4c2728 | 4108 | flog_err( |
e50f7cfd | 4109 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4110 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4111 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4112 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4113 | } |
4114 | } | |
4115 | ||
342dd0c6 | 4116 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4117 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4118 | { |
4119 | struct bgp_table *table = NULL; | |
9bcb3eef | 4120 | struct bgp_dest *dest = NULL; |
40381db7 | 4121 | struct bgp_path_info *pi; |
342dd0c6 | 4122 | |
053905d2 | 4123 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4124 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4125 | /* Only care about "selected" routes. Also ensure that |
4126 | * these are routes that are injectable into EVPN. | |
4127 | */ | |
25f2ca53 | 4128 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4129 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4130 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4131 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4132 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4133 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4134 | safi); |
25f2ca53 | 4135 | break; |
4136 | } | |
4137 | } | |
4138 | } | |
5424b7ba | 4139 | } |
342dd0c6 | 4140 | |
5fd9c12b KA |
4141 | /* |
4142 | * evpn - enable advertisement of default g/w | |
4143 | */ | |
4144 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4145 | safi_t safi, bool add) | |
4146 | { | |
4147 | struct prefix ip_prefix; | |
4148 | ||
4149 | /* form the default prefix 0.0.0.0/0 */ | |
4150 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4151 | ip_prefix.family = afi2family(afi); | |
4152 | ||
4153 | if (add) { | |
4154 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4155 | NULL, afi, safi); | |
4156 | } else { | |
4157 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4158 | afi, safi); | |
4159 | } | |
4160 | } | |
4161 | ||
4162 | ||
2f69f6d3 | 4163 | /* |
4164 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4165 | * to this function correspond to those of the source IP prefix (best | |
4166 | * path in the case of the attr. In the case of a local prefix (when we | |
4167 | * are advertising local subnets), the src_attr will be NULL. | |
4168 | */ | |
bd494ec5 | 4169 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4170 | struct attr *src_attr, afi_t afi, |
4171 | safi_t safi) | |
5424b7ba MK |
4172 | { |
4173 | int ret = 0; | |
4174 | struct prefix_evpn evp; | |
4175 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4176 | |
31310b25 | 4177 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4178 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4179 | if (ret) | |
e50f7cfd | 4180 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4181 | "%u: Failed to create type-5 route for prefix %s", |
4182 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4183 | } |
4184 | ||
2f69f6d3 | 4185 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4186 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4187 | * advertisement is enabled. | |
4188 | */ | |
996c9314 LB |
4189 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4190 | 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)) { |
2f69f6d3 | 4198 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4199 | * attribute. Also, ensure that the route is injectable |
4200 | * into EVPN. | |
2f69f6d3 | 4201 | * TODO: Support for AddPath for EVPN. |
4202 | */ | |
9bcb3eef | 4203 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4204 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4205 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4206 | |
4207 | /* apply the route-map */ | |
4208 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4209 | route_map_result_t ret; |
e34291b8 | 4210 | struct bgp_path_info tmp_pi; |
4211 | struct bgp_path_info_extra tmp_pie; | |
4212 | struct attr tmp_attr; | |
4213 | ||
4214 | tmp_attr = *pi->attr; | |
4215 | ||
4216 | /* Fill temp path_info */ | |
9bcb3eef DS |
4217 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4218 | dest, pi, pi->peer, | |
4219 | &tmp_attr); | |
e34291b8 | 4220 | |
4221 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4222 | |
996c9314 LB |
4223 | ret = route_map_apply( |
4224 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4225 | .map, | |
9bcb3eef | 4226 | bgp_dest_get_prefix(dest), |
b54892e0 | 4227 | RMAP_BGP, &tmp_pi); |
e34291b8 | 4228 | if (ret == RMAP_DENYMATCH) { |
4229 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4230 | continue; |
e34291b8 | 4231 | } |
4232 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4233 | bgp_vrf, |
9bcb3eef | 4234 | bgp_dest_get_prefix(dest), |
b54892e0 | 4235 | &tmp_attr, afi, safi); |
e34291b8 | 4236 | } else |
4237 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4238 | bgp_vrf, |
9bcb3eef | 4239 | bgp_dest_get_prefix(dest), |
b54892e0 | 4240 | pi->attr, afi, safi); |
2f69f6d3 | 4241 | break; |
4242 | } | |
4243 | } | |
31310b25 | 4244 | } |
342dd0c6 | 4245 | } |
4246 | ||
996c9314 | 4247 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4248 | { |
4249 | struct listnode *node, *nnode, *node_to_del; | |
4250 | struct ecommunity *ecom, *ecom_auto; | |
4251 | struct ecommunity_val eval; | |
4252 | ||
bf1061d8 VB |
4253 | if (bgp->advertise_autort_rfc8365) |
4254 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4255 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4256 | ||
4257 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4258 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4259 | node_to_del = NULL; |
4260 | ||
4261 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4262 | if (ecommunity_match(ecom, ecom_auto)) { | |
4263 | ecommunity_free(&ecom); | |
4264 | node_to_del = node; | |
4265 | } | |
4266 | } | |
4267 | ||
4268 | if (node_to_del) | |
4269 | list_delete_node(rtl, node_to_del); | |
4270 | ||
4271 | ecommunity_free(&ecom_auto); | |
4272 | } | |
4273 | ||
4274 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4275 | struct ecommunity *ecomadd) |
c581d8b0 | 4276 | { |
5ba238b7 | 4277 | /* uninstall routes from vrf */ |
3d0b43d7 | 4278 | if (is_l3vni_live(bgp_vrf)) |
4279 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4280 | |
4281 | /* Cleanup the RT to VRF mapping */ | |
4282 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4283 | ||
c581d8b0 MK |
4284 | /* Remove auto generated RT */ |
4285 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4286 | ||
4287 | /* Add the newly configured RT to RT list */ | |
4288 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4289 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4290 | ||
3d0b43d7 | 4291 | /* map VRF to its RTs and install routes matching the new RTs */ |
4292 | if (is_l3vni_live(bgp_vrf)) { | |
4293 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4294 | install_routes_for_vrf(bgp_vrf); | |
4295 | } | |
c581d8b0 MK |
4296 | } |
4297 | ||
4298 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4299 | struct ecommunity *ecomdel) | |
4300 | { | |
4301 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4302 | struct ecommunity *ecom = NULL; | |
4303 | ||
5ba238b7 | 4304 | /* uninstall routes from vrf */ |
3d0b43d7 | 4305 | if (is_l3vni_live(bgp_vrf)) |
4306 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4307 | |
4308 | /* Cleanup the RT to VRF mapping */ | |
4309 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4310 | ||
c581d8b0 MK |
4311 | /* remove the RT from the RT list */ |
4312 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4313 | if (ecommunity_match(ecom, ecomdel)) { | |
4314 | ecommunity_free(&ecom); | |
4315 | node_to_del = node; | |
4316 | break; | |
4317 | } | |
4318 | } | |
4319 | ||
4320 | if (node_to_del) | |
4321 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4322 | ||
b3a4db3d | 4323 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4324 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4325 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4326 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4327 | if (is_l3vni_live(bgp_vrf)) |
4328 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4329 | } |
4330 | ||
3d0b43d7 | 4331 | /* map VRFs to its RTs and install routes matching this new RT */ |
4332 | if (is_l3vni_live(bgp_vrf)) { | |
4333 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4334 | install_routes_for_vrf(bgp_vrf); | |
4335 | } | |
c581d8b0 MK |
4336 | } |
4337 | ||
4338 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4339 | struct ecommunity *ecomadd) | |
4340 | { | |
4341 | /* remove auto-generated RT */ | |
4342 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4343 | ||
4344 | /* Add the new RT to the RT list */ | |
4345 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4346 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4347 | ||
ebdc9e64 AD |
4348 | if (is_l3vni_live(bgp_vrf)) |
4349 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4350 | } |
4351 | ||
4352 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4353 | struct ecommunity *ecomdel) | |
4354 | { | |
4355 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4356 | struct ecommunity *ecom = NULL; | |
4357 | ||
4358 | /* Remove the RT from the RT list */ | |
4359 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4360 | if (ecommunity_match(ecom, ecomdel)) { | |
4361 | ecommunity_free(&ecom); | |
4362 | node_to_del = node; | |
4363 | break; | |
4364 | } | |
4365 | } | |
4366 | ||
4367 | if (node_to_del) | |
4368 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4369 | ||
1525e99f DS |
4370 | /* |
4371 | * Temporary assert to make SA happy. | |
4372 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4373 | * which means that SA is going to complain about | |
4374 | * the list_isempty call, which doesn't NULL check. | |
4375 | * So until we get this situation cleaned up, here | |
4376 | * we are. | |
4377 | */ | |
4378 | assert(bgp_vrf->vrf_export_rtl); | |
4379 | ||
c581d8b0 | 4380 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4381 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4382 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4383 | if (is_l3vni_live(bgp_vrf)) |
4384 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4385 | } |
4386 | ||
ebdc9e64 AD |
4387 | if (is_l3vni_live(bgp_vrf)) |
4388 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4389 | } |
4390 | ||
2d48ee25 | 4391 | /* |
4392 | * Handle change to BGP router id. This is invoked twice by the change | |
4393 | * handler, first before the router id has been changed and then after | |
4394 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4395 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4396 | * will result in the routes being re-advertised. |
4397 | */ | |
d62a17ae | 4398 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4399 | { |
5394a276 CS |
4400 | struct listnode *node; |
4401 | struct bgp *bgp_vrf; | |
4402 | ||
676f83b9 | 4403 | if (withdraw) { |
4404 | ||
4405 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4406 | stored in the global table for this vrf |
4407 | */ | |
80b140af | 4408 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4409 | |
4410 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4411 | * L2-VNIs |
4412 | */ | |
d62a17ae | 4413 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4414 | (void (*)(struct hash_bucket *, |
d62a17ae | 4415 | void *))withdraw_router_id_vni, |
4416 | bgp); | |
5394a276 CS |
4417 | |
4418 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4419 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4420 | if (bgp_vrf->evpn_info->advertise_pip && | |
4421 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4422 | == INADDR_ANY)) | |
4423 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4424 | = INADDR_ANY; | |
4425 | } | |
4426 | } | |
676f83b9 | 4427 | } else { |
4428 | ||
5394a276 CS |
4429 | /* Assign new default instance router-id */ |
4430 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4431 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4432 | if (bgp_vrf->evpn_info->advertise_pip && | |
4433 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4434 | == INADDR_ANY)) { | |
4435 | bgp_vrf->evpn_info->pip_ip = | |
4436 | bgp->router_id; | |
4437 | /* advertise type-5 routes with | |
4438 | * new nexthop | |
4439 | */ | |
4440 | update_advertise_vrf_routes(bgp_vrf); | |
4441 | } | |
4442 | } | |
4443 | } | |
4444 | ||
676f83b9 | 4445 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4446 | * RD |
4447 | */ | |
80b140af | 4448 | update_router_id_vrf(bgp); |
676f83b9 | 4449 | |
4450 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4451 | * new RD |
4452 | */ | |
d62a17ae | 4453 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4454 | (void (*)(struct hash_bucket *, |
d62a17ae | 4455 | void *))update_router_id_vni, |
4456 | bgp); | |
676f83b9 | 4457 | } |
2d48ee25 | 4458 | } |
4459 | ||
bf1061d8 VB |
4460 | /* |
4461 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4462 | */ | |
4463 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4464 | { | |
4465 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4466 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4467 | void*))update_autort_vni, |
4468 | bgp); | |
4469 | } | |
4470 | ||
90e60aa7 | 4471 | /* |
4472 | * Handle change to export RT - update and advertise local routes. | |
4473 | */ | |
d62a17ae | 4474 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4475 | { |
d62a17ae | 4476 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4477 | } |
4478 | ||
996c9314 | 4479 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4480 | { |
4481 | if (withdraw) | |
4482 | delete_withdraw_vrf_routes(bgp_vrf); | |
4483 | else | |
4484 | update_advertise_vrf_routes(bgp_vrf); | |
4485 | } | |
4486 | ||
90e60aa7 | 4487 | /* |
4488 | * Handle change to RD. This is invoked twice by the change handler, | |
4489 | * first before the RD has been changed and then after the RD has | |
4490 | * been changed. The first invocation will result in local routes | |
4491 | * of this VNI being deleted and withdrawn and the next will result | |
4492 | * in the routes being re-advertised. | |
4493 | */ | |
d62a17ae | 4494 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4495 | int withdraw) | |
90e60aa7 | 4496 | { |
d62a17ae | 4497 | if (withdraw) |
4498 | delete_withdraw_vni_routes(bgp, vpn); | |
4499 | else | |
4500 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4501 | } |
4502 | ||
4503 | /* | |
4504 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4505 | */ | |
d62a17ae | 4506 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4507 | { |
d62a17ae | 4508 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4509 | } |
4510 | ||
4511 | /* | |
4512 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4513 | * to Import RT. | |
4514 | */ | |
d62a17ae | 4515 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4516 | { |
d62a17ae | 4517 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4518 | } |
4519 | ||
b16031a2 | 4520 | /* |
b57ba6d2 | 4521 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4522 | */ |
d7c0a89a | 4523 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4524 | int len) |
b16031a2 | 4525 | { |
b57ba6d2 | 4526 | vni_t vni1, vni2; |
b16031a2 | 4527 | |
b57ba6d2 MK |
4528 | vni1 = label2vni(label); |
4529 | if (num_labels == 2) { | |
996c9314 | 4530 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4531 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4532 | } else | |
4533 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4534 | return buf; |
b16031a2 | 4535 | } |
4536 | ||
9c92b5f7 MK |
4537 | /* |
4538 | * Function to convert evpn route to json format. | |
4539 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4540 | */ | |
bd494ec5 | 4541 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4542 | { |
b682f6de | 4543 | char buf1[ETHER_ADDR_STRLEN]; |
4544 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4545 | uint8_t family; |
4546 | uint8_t prefixlen; | |
9c92b5f7 | 4547 | |
b682f6de | 4548 | if (!json) |
4549 | return; | |
9c92b5f7 | 4550 | |
44c69747 LK |
4551 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4552 | ||
4553 | switch (p->prefix.route_type) { | |
4554 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4555 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4556 | p->prefix.macip_addr.eth_tag); |
4557 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4558 | json_object_string_add(json, "mac", | |
4559 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4560 | sizeof(buf1))); | |
4561 | ||
4562 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4563 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4564 | AF_INET6; | |
4565 | prefixlen = (family == AF_INET) ? | |
4566 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4567 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4568 | buf2, PREFIX2STR_BUFFER); | |
4569 | json_object_int_add(json, "ipLen", prefixlen); | |
4570 | json_object_string_add(json, "ip", buf2); | |
4571 | } | |
4572 | break; | |
dff8f48d | 4573 | |
44c69747 LK |
4574 | case BGP_EVPN_IMET_ROUTE: |
4575 | json_object_int_add(json, "ethTag", | |
4576 | p->prefix.imet_addr.eth_tag); | |
4577 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4578 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4579 | IPV6_MAX_BITLEN; | |
4580 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4581 | PREFIX2STR_BUFFER); | |
4582 | json_object_int_add(json, "ipLen", prefixlen); | |
4583 | json_object_string_add(json, "ip", buf2); | |
4584 | break; | |
dff8f48d | 4585 | |
44c69747 LK |
4586 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4587 | json_object_int_add(json, "ethTag", | |
4588 | p->prefix.prefix_addr.eth_tag); | |
4589 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4590 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4591 | buf2, sizeof(buf2)); | |
4592 | json_object_int_add(json, "ipLen", | |
4593 | p->prefix.prefix_addr.ip_prefix_length); | |
4594 | json_object_string_add(json, "ip", buf2); | |
4595 | break; | |
4596 | ||
4597 | default: | |
4598 | break; | |
dff8f48d | 4599 | } |
9c92b5f7 MK |
4600 | } |
4601 | ||
128ea8ab | 4602 | /* |
4603 | * Encode EVPN prefix in Update (MP_REACH) | |
4604 | */ | |
5f040085 DS |
4605 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4606 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4607 | uint32_t num_labels, struct attr *attr, |
4608 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4609 | { |
4610 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4611 | int len, ipa_len = 0; |
d62a17ae | 4612 | |
4613 | if (addpath_encode) | |
4614 | stream_putl(s, addpath_tx_id); | |
4615 | ||
4616 | /* Route type */ | |
4617 | stream_putc(s, evp->prefix.route_type); | |
4618 | ||
4619 | switch (evp->prefix.route_type) { | |
4620 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4621 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4622 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4623 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4624 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4625 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4626 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4627 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4628 | len += 3; | |
4629 | stream_putc(s, len); | |
996c9314 | 4630 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4631 | if (attr) |
c44ab6f1 | 4632 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4633 | else |
4634 | stream_put(s, 0, 10); | |
3714a385 | 4635 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4636 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4637 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4638 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4639 | if (ipa_len) /* IP */ | |
4640 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4641 | ipa_len); | |
b57ba6d2 MK |
4642 | /* 1st label is the L2 VNI */ |
4643 | stream_put(s, label, BGP_LABEL_BYTES); | |
4644 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4645 | if (ipa_len && num_labels > 1) | |
996c9314 | 4646 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4647 | break; |
4648 | ||
4649 | case BGP_EVPN_IMET_ROUTE: | |
4650 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4651 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4652 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4653 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4654 | /* Originating Router's IP Addr */ | |
3714a385 | 4655 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4656 | break; |
4657 | ||
50f74cf1 | 4658 | case BGP_EVPN_ES_ROUTE: |
4659 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4660 | stream_put(s, prd->val, 8); /* RD */ | |
4661 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4662 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4663 | /* VTEP IP */ |
4664 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4665 | break; |
4666 | ||
c44ab6f1 AK |
4667 | case BGP_EVPN_AD_ROUTE: |
4668 | /* RD, ESI, EthTag, 1 VNI */ | |
4669 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4670 | stream_putc(s, len); | |
4671 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4672 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4673 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4674 | stream_put(s, label, BGP_LABEL_BYTES); | |
4675 | break; | |
4676 | ||
d62a17ae | 4677 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4678 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4679 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4680 | break; |
4681 | ||
4682 | default: | |
4683 | break; | |
4684 | } | |
4685 | } | |
4686 | ||
4687 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4688 | struct bgp_nlri *packet, int withdraw) | |
4689 | { | |
d7c0a89a QY |
4690 | uint8_t *pnt; |
4691 | uint8_t *lim; | |
d62a17ae | 4692 | afi_t afi; |
4693 | safi_t safi; | |
d7c0a89a | 4694 | uint32_t addpath_id; |
d62a17ae | 4695 | int addpath_encoded; |
4696 | int psize = 0; | |
d7c0a89a | 4697 | uint8_t rtype; |
d62a17ae | 4698 | struct prefix p; |
4699 | ||
d62a17ae | 4700 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4701 | pnt = packet->nlri; | |
4702 | lim = pnt + packet->length; | |
4703 | afi = packet->afi; | |
4704 | safi = packet->safi; | |
4705 | addpath_id = 0; | |
4706 | ||
4707 | addpath_encoded = | |
4708 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4709 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4710 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4711 | ||
4712 | for (; pnt < lim; pnt += psize) { | |
4713 | /* Clear prefix structure. */ | |
4714 | memset(&p, 0, sizeof(struct prefix)); | |
4715 | ||
4716 | /* Deal with path-id if AddPath is supported. */ | |
4717 | if (addpath_encoded) { | |
4718 | /* When packet overflow occurs return immediately. */ | |
4719 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4720 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4721 | |
a3a850a1 S |
4722 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4723 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4724 | pnt += BGP_ADDPATH_ID_LEN; |
4725 | } | |
4726 | ||
4727 | /* All EVPN NLRI types start with type and length. */ | |
4728 | if (pnt + 2 > lim) | |
513386b5 | 4729 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4730 | |
4731 | rtype = *pnt++; | |
3f54c705 | 4732 | psize = *pnt++; |
d62a17ae | 4733 | |
4734 | /* When packet overflow occur return immediately. */ | |
4735 | if (pnt + psize > lim) | |
513386b5 | 4736 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4737 | |
4738 | switch (rtype) { | |
4739 | case BGP_EVPN_MAC_IP_ROUTE: | |
4740 | if (process_type2_route(peer, afi, safi, | |
4741 | withdraw ? NULL : attr, pnt, | |
4742 | psize, addpath_id)) { | |
af4c2728 | 4743 | flog_err( |
e50f7cfd | 4744 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4745 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4746 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4747 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4748 | } |
4749 | break; | |
4750 | ||
4751 | case BGP_EVPN_IMET_ROUTE: | |
4752 | if (process_type3_route(peer, afi, safi, | |
4753 | withdraw ? NULL : attr, pnt, | |
4754 | psize, addpath_id)) { | |
af4c2728 | 4755 | flog_err( |
e50f7cfd | 4756 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4757 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4758 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4759 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4760 | } |
4761 | break; | |
4762 | ||
50f74cf1 | 4763 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 4764 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 4765 | withdraw ? NULL : attr, pnt, |
4766 | psize, addpath_id)) { | |
af4c2728 | 4767 | flog_err( |
e50f7cfd | 4768 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4769 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4770 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4771 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4772 | } |
4773 | break; | |
4774 | ||
c44ab6f1 AK |
4775 | case BGP_EVPN_AD_ROUTE: |
4776 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
4777 | withdraw ? NULL : attr, pnt, | |
4778 | psize, addpath_id)) { | |
4779 | flog_err( | |
4780 | EC_BGP_PKT_PROCESS, | |
4781 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
4782 | peer->bgp->vrf_id, peer->host, psize); | |
4783 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
4784 | } | |
4785 | break; | |
4786 | ||
d62a17ae | 4787 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4788 | if (process_type5_route(peer, afi, safi, |
4789 | withdraw ? NULL : attr, pnt, | |
4790 | psize, addpath_id)) { | |
af4c2728 | 4791 | flog_err( |
e50f7cfd | 4792 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4793 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4794 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4795 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4796 | } |
4797 | break; | |
4798 | ||
4799 | default: | |
4800 | break; | |
4801 | } | |
4802 | } | |
4803 | ||
4804 | /* Packet length consistency check. */ | |
4805 | if (pnt != lim) | |
513386b5 | 4806 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 4807 | |
513386b5 | 4808 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 4809 | } |
4810 | ||
10ebe1ab MK |
4811 | /* |
4812 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4813 | * The mapping will be used during route processing. | |
4814 | * bgp_def: default bgp instance | |
4815 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4816 | */ | |
4817 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4818 | { | |
4819 | int i = 0; | |
4820 | struct ecommunity_val *eval = NULL; | |
4821 | struct listnode *node = NULL, *nnode = NULL; | |
4822 | struct ecommunity *ecom = NULL; | |
4823 | ||
4824 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4825 | for (i = 0; i < ecom->size; i++) { | |
4826 | eval = (struct ecommunity_val *)(ecom->val | |
4827 | + (i | |
4828 | * ECOMMUNITY_SIZE)); | |
4829 | map_vrf_to_rt(bgp_vrf, eval); | |
4830 | } | |
4831 | } | |
4832 | } | |
4833 | ||
4834 | /* | |
4835 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4836 | */ | |
4837 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4838 | { | |
4839 | int i; | |
4840 | struct ecommunity_val *eval; | |
4841 | struct listnode *node, *nnode; | |
4842 | struct ecommunity *ecom; | |
4843 | ||
4844 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4845 | for (i = 0; i < ecom->size; i++) { | |
4846 | struct vrf_irt_node *irt; | |
4847 | struct ecommunity_val eval_tmp; | |
4848 | ||
4849 | eval = (struct ecommunity_val *)(ecom->val | |
4850 | + (i | |
4851 | * ECOMMUNITY_SIZE)); | |
4852 | /* If using "automatic" RT, we only care about the | |
4853 | * local-admin sub-field. | |
4854 | * This is to facilitate using VNI as the RT for EBGP | |
4855 | * peering too. | |
4856 | */ | |
4857 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4858 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4859 | BGP_VRF_IMPORT_RT_CFGD)) | |
4860 | mask_ecom_global_admin(&eval_tmp, eval); | |
4861 | ||
4862 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4863 | if (irt) | |
4864 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4865 | } | |
4866 | } | |
4867 | } | |
4868 | ||
4869 | ||
128ea8ab | 4870 | /* |
4871 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4872 | * The mapping will be used during route processing. | |
4873 | */ | |
d62a17ae | 4874 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4875 | { |
d62a17ae | 4876 | int i; |
4877 | struct ecommunity_val *eval; | |
4878 | struct listnode *node, *nnode; | |
4879 | struct ecommunity *ecom; | |
128ea8ab | 4880 | |
d62a17ae | 4881 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4882 | for (i = 0; i < ecom->size; i++) { | |
4883 | eval = (struct ecommunity_val *)(ecom->val | |
4884 | + (i | |
4885 | * ECOMMUNITY_SIZE)); | |
4886 | map_vni_to_rt(bgp, vpn, eval); | |
4887 | } | |
4888 | } | |
128ea8ab | 4889 | } |
4890 | ||
4891 | /* | |
4892 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4893 | */ | |
d62a17ae | 4894 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4895 | { |
d62a17ae | 4896 | int i; |
4897 | struct ecommunity_val *eval; | |
4898 | struct listnode *node, *nnode; | |
4899 | struct ecommunity *ecom; | |
128ea8ab | 4900 | |
d62a17ae | 4901 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4902 | for (i = 0; i < ecom->size; i++) { | |
4903 | struct irt_node *irt; | |
4904 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4905 | |
d62a17ae | 4906 | eval = (struct ecommunity_val *)(ecom->val |
4907 | + (i | |
4908 | * ECOMMUNITY_SIZE)); | |
4909 | /* If using "automatic" RT, we only care about the | |
4910 | * local-admin sub-field. | |
4911 | * This is to facilitate using VNI as the RT for EBGP | |
4912 | * peering too. | |
4913 | */ | |
4914 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4915 | if (!is_import_rt_configured(vpn)) | |
4916 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4917 | |
d62a17ae | 4918 | irt = lookup_import_rt(bgp, &eval_tmp); |
4919 | if (irt) | |
4920 | unmap_vni_from_rt(bgp, vpn, irt); | |
4921 | } | |
4922 | } | |
128ea8ab | 4923 | } |
4924 | ||
4925 | /* | |
4926 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4927 | * The mapping will be used during route processing. | |
4928 | */ | |
d62a17ae | 4929 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4930 | { |
c581d8b0 | 4931 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4932 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4933 | |
d62a17ae | 4934 | /* Map RT to VNI */ |
4935 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4936 | } |
4937 | ||
4938 | /* | |
4939 | * Derive Export RT automatically for VNI. | |
4940 | */ | |
d62a17ae | 4941 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4942 | { |
c581d8b0 | 4943 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4944 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4945 | } |
4946 | ||
676f83b9 | 4947 | /* |
4948 | * Derive RD automatically for VNI using passed information - it | |
4949 | * is of the form RouterId:unique-id-for-vni. | |
4950 | */ | |
4951 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4952 | { | |
9e97ff03 CS |
4953 | if (is_vrf_rd_configured(bgp)) |
4954 | return; | |
4955 | ||
92708db6 | 4956 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4957 | } |
4958 | ||
128ea8ab | 4959 | /* |
4960 | * Derive RD automatically for VNI using passed information - it | |
4961 | * is of the form RouterId:unique-id-for-vni. | |
4962 | */ | |
d62a17ae | 4963 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4964 | { |
c44ab6f1 | 4965 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 4966 | |
d62a17ae | 4967 | vpn->prd.family = AF_UNSPEC; |
4968 | vpn->prd.prefixlen = 64; | |
23d0a753 | 4969 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 4970 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4971 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4972 | } |
4973 | ||
7df407ed CS |
4974 | /* |
4975 | * Lookup L3-VNI | |
4976 | */ | |
4977 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
4978 | { | |
4979 | struct list *inst = bm->bgp; | |
4980 | struct listnode *node; | |
4981 | struct bgp *bgp_vrf; | |
4982 | ||
4983 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
4984 | if (bgp_vrf->l3vni == vni) | |
4985 | return true; | |
4986 | } | |
4987 | ||
4988 | return false; | |
4989 | } | |
4990 | ||
128ea8ab | 4991 | /* |
4992 | * Lookup VNI. | |
4993 | */ | |
d62a17ae | 4994 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4995 | { |
d62a17ae | 4996 | struct bgpevpn *vpn; |
4997 | struct bgpevpn tmp; | |
128ea8ab | 4998 | |
d62a17ae | 4999 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5000 | tmp.vni = vni; | |
5001 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5002 | return vpn; | |
128ea8ab | 5003 | } |
5004 | ||
5005 | /* | |
5006 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5007 | */ | |
d62a17ae | 5008 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5009 | struct in_addr originator_ip, |
5010 | vrf_id_t tenant_vrf_id, | |
5011 | struct in_addr mcast_grp) | |
128ea8ab | 5012 | { |
d62a17ae | 5013 | struct bgpevpn *vpn; |
128ea8ab | 5014 | |
d62a17ae | 5015 | if (!bgp) |
5016 | return NULL; | |
128ea8ab | 5017 | |
d62a17ae | 5018 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5019 | |
d62a17ae | 5020 | /* Set values - RD and RT set to defaults. */ |
5021 | vpn->vni = vni; | |
5022 | vpn->originator_ip = originator_ip; | |
29c53922 | 5023 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5024 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5025 | |
d62a17ae | 5026 | /* Initialize route-target import and export lists */ |
5027 | vpn->import_rtl = list_new(); | |
5028 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5029 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5030 | vpn->export_rtl = list_new(); |
5031 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5032 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5033 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5034 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5035 | |
d62a17ae | 5036 | /* Initialize EVPN route table. */ |
960035b2 | 5037 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5038 | |
d62a17ae | 5039 | /* Add to hash */ |
5040 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5041 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5042 | return NULL; | |
5043 | } | |
6a8657d0 MK |
5044 | |
5045 | /* add to l2vni list on corresponding vrf */ | |
5046 | bgpevpn_link_to_l3vni(vpn); | |
5047 | ||
c44ab6f1 AK |
5048 | bgp_evpn_vni_es_init(vpn); |
5049 | ||
d62a17ae | 5050 | QOBJ_REG(vpn, bgpevpn); |
5051 | return vpn; | |
128ea8ab | 5052 | } |
5053 | ||
5054 | /* | |
5055 | * Free a given VPN - called in multiple scenarios such as zebra | |
5056 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5057 | * This just frees appropriate memory, caller should have taken other | |
5058 | * needed actions. | |
5059 | */ | |
d62a17ae | 5060 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5061 | { |
c44ab6f1 | 5062 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5063 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5064 | bgp_table_unlock(vpn->route_table); |
5065 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5066 | list_delete(&vpn->import_rtl); |
5067 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5068 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5069 | hash_release(bgp->vnihash, vpn); |
5070 | QOBJ_UNREG(vpn); | |
5071 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5072 | } |
5073 | ||
50f74cf1 | 5074 | /* |
5075 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5076 | */ |
d62a17ae | 5077 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5078 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5079 | { |
40381db7 | 5080 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5081 | } |
5082 | ||
5083 | /* | |
50f74cf1 | 5084 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5085 | */ |
d62a17ae | 5086 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5087 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5088 | { |
40381db7 | 5089 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5090 | } |
5091 | ||
db0e1937 MK |
5092 | /* filter routes which have martian next hops */ |
5093 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5094 | { | |
0291c246 MK |
5095 | afi_t afi; |
5096 | safi_t safi; | |
9bcb3eef | 5097 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5098 | struct bgp_table *table; |
40381db7 | 5099 | struct bgp_path_info *pi; |
db0e1937 MK |
5100 | |
5101 | afi = AFI_L2VPN; | |
5102 | safi = SAFI_EVPN; | |
5103 | ||
5104 | /* Walk entire global routing table and evaluate routes which could be | |
5105 | * imported into this VPN. Note that we cannot just look at the routes | |
5106 | * for the VNI's RD - | |
5107 | * remote routes applicable for this VNI could have any RD. | |
5108 | */ | |
5109 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5110 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5111 | rd_dest = bgp_route_next(rd_dest)) { | |
5112 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5113 | if (!table) |
5114 | continue; | |
5115 | ||
9bcb3eef DS |
5116 | for (dest = bgp_table_top(table); dest; |
5117 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5118 | |
9bcb3eef | 5119 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5120 | pi = pi->next) { |
db0e1937 MK |
5121 | |
5122 | /* Consider "valid" remote routes applicable for | |
5123 | * this VNI. */ | |
40381db7 DS |
5124 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5125 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5126 | continue; |
9bcb3eef DS |
5127 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5128 | pi->sub_type, pi->attr, | |
5129 | dest)) { | |
b54892e0 | 5130 | const struct prefix *p = |
9bcb3eef | 5131 | bgp_dest_get_prefix(dest); |
db0e1937 | 5132 | |
b54892e0 DS |
5133 | if (bgp_debug_update(pi->peer, p, NULL, |
5134 | 1)) { | |
5135 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5136 | |
b54892e0 | 5137 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5138 | attr_str, |
5139 | sizeof(attr_str)); | |
db0e1937 | 5140 | |
db0e1937 | 5141 | zlog_debug( |
56ca3b5b | 5142 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5143 | bgp->vrf_id, dest, |
db0e1937 | 5144 | attr_str); |
b54892e0 | 5145 | } |
db0e1937 | 5146 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5147 | p, pi); |
db0e1937 | 5148 | |
9bcb3eef | 5149 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5150 | safi); |
db0e1937 | 5151 | } |
db0e1937 MK |
5152 | } |
5153 | } | |
5154 | } | |
5155 | ||
5156 | return 0; | |
5157 | } | |
5158 | ||
128ea8ab | 5159 | /* |
5160 | * Handle del of a local MACIP. | |
5161 | */ | |
d62a17ae | 5162 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5163 | struct ipaddr *ip, int state) |
128ea8ab | 5164 | { |
d62a17ae | 5165 | struct bgpevpn *vpn; |
5166 | struct prefix_evpn p; | |
9bcb3eef | 5167 | struct bgp_dest *dest; |
128ea8ab | 5168 | |
d62a17ae | 5169 | /* Lookup VNI hash - should exist. */ |
5170 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5171 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5172 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5173 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5174 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5175 | return -1; | |
5176 | } | |
128ea8ab | 5177 | |
d62a17ae | 5178 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5179 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5180 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5181 | delete_evpn_route(bgp, vpn, &p); | |
5182 | } else { | |
5183 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5184 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5185 | if (dest) | |
5186 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5187 | } |
128ea8ab | 5188 | |
d62a17ae | 5189 | return 0; |
128ea8ab | 5190 | } |
5191 | ||
5192 | /* | |
5193 | * Handle add of a local MACIP. | |
5194 | */ | |
d62a17ae | 5195 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5196 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5197 | { |
d62a17ae | 5198 | struct bgpevpn *vpn; |
5199 | struct prefix_evpn p; | |
128ea8ab | 5200 | |
d62a17ae | 5201 | /* Lookup VNI hash - should exist. */ |
5202 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5203 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5204 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5205 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5206 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5207 | return -1; | |
5208 | } | |
128ea8ab | 5209 | |
d62a17ae | 5210 | /* Create EVPN type-2 route and schedule for processing. */ |
5211 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5212 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
d62a17ae | 5213 | char buf[ETHER_ADDR_STRLEN]; |
5214 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5215 | |
af4c2728 | 5216 | flog_err( |
e50f7cfd | 5217 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5218 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5219 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5220 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5221 | ? "sticky gateway" | |
5222 | : "", | |
d62a17ae | 5223 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5224 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5225 | return -1; |
5226 | } | |
128ea8ab | 5227 | |
d62a17ae | 5228 | return 0; |
128ea8ab | 5229 | } |
5230 | ||
e3b78da8 | 5231 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5232 | struct bgp *bgp_vrf) |
5233 | { | |
e3b78da8 | 5234 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5235 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5236 | |
5e53dce3 T |
5237 | bgp_evpn = bgp_get_evpn(); |
5238 | assert(bgp_evpn); | |
6a8657d0 | 5239 | |
6a8657d0 MK |
5240 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5241 | bgpevpn_link_to_l3vni(vpn); | |
5242 | } | |
5243 | ||
14e814ea CS |
5244 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5245 | struct ethaddr *svi_rmac, | |
5246 | struct ethaddr *vrr_rmac, | |
0483af6e | 5247 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5248 | ifindex_t svi_ifindex, |
5249 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5250 | { |
5251 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5252 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5253 | struct listnode *node = NULL; |
5254 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5255 | as_t as = 0; |
5256 | ||
3621ebc5 | 5257 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5258 | * auto-creatio |
5259 | */ | |
5e53dce3 T |
5260 | bgp_evpn = bgp_get_evpn(); |
5261 | if (!bgp_evpn) { | |
af4c2728 | 5262 | flog_err( |
e50f7cfd | 5263 | EC_BGP_NO_DFLT, |
3621ebc5 | 5264 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5265 | l3vni); |
fe1dc5a3 MK |
5266 | return -1; |
5267 | } | |
5e53dce3 | 5268 | as = bgp_evpn->as; |
fe1dc5a3 | 5269 | |
0437e105 | 5270 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5271 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5272 | if (!bgp_vrf) { |
5273 | ||
5274 | int ret = 0; | |
5275 | ||
5d5393b9 DL |
5276 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5277 | vrf_id == VRF_DEFAULT | |
5278 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5279 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5280 | switch (ret) { |
fe1dc5a3 | 5281 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5282 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5283 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5284 | return -1; |
5285 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5286 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5287 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5288 | return -1; |
5289 | } | |
5290 | ||
5291 | /* mark as auto created */ | |
5292 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5293 | } | |
5294 | ||
0483af6e | 5295 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5296 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5297 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5298 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5299 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5300 | |
14e814ea CS |
5301 | /* copy anycast MAC from VRR MAC */ |
5302 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5303 | /* copy sys RMAC from SVI MAC */ | |
5304 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5305 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5306 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5307 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5308 | ||
5309 | if (bgp_debug_zebra(NULL)) { | |
5310 | char buf[ETHER_ADDR_STRLEN]; | |
5311 | char buf1[ETHER_ADDR_STRLEN]; | |
5312 | char buf2[ETHER_ADDR_STRLEN]; | |
5313 | ||
5314 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5315 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5316 | bgp_vrf->l3vni, | |
5317 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5318 | : "disable", | |
5319 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5320 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5321 | buf1, sizeof(buf1)), | |
5322 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5323 | buf2, sizeof(buf2)), | |
5324 | is_anycast_mac ? "Enable" : "Disable"); | |
5325 | } | |
c48d9f5f | 5326 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5327 | if (filter) { |
c48d9f5f MK |
5328 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5329 | ||
10f70510 AD |
5330 | /* |
5331 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5332 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5333 | * that explicitly. | |
5334 | */ | |
5335 | } else { | |
5336 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5337 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5338 | ||
5339 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5340 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5341 | ||
5342 | /* | |
5343 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5344 | * flag, update all MACIP routes in this VNI | |
5345 | */ | |
5346 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5347 | update_all_type2_routes(bgp_evpn, vpn); | |
5348 | } | |
5349 | } | |
5350 | } | |
5351 | ||
530e8a6e | 5352 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5353 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5354 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5355 | else |
5356 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5357 | ||
c581d8b0 MK |
5358 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5359 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5360 | |
5361 | /* auto derive RD */ | |
676f83b9 | 5362 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5363 | |
6a8657d0 | 5364 | /* link all corresponding l2vnis */ |
5e53dce3 | 5365 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5366 | (void (*)(struct hash_bucket *, |
996c9314 | 5367 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5368 | bgp_vrf); |
5369 | ||
c48d9f5f MK |
5370 | /* Only update all corresponding type-2 routes if we are advertising two |
5371 | * labels along with type-2 routes | |
5372 | */ | |
5373 | if (!filter) | |
5374 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5375 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5376 | |
06d2e8f3 MK |
5377 | /* advertise type-5 routes if needed */ |
5378 | update_advertise_vrf_routes(bgp_vrf); | |
5379 | ||
5ba238b7 MK |
5380 | /* install all remote routes belonging to this l3vni into correspondng |
5381 | * vrf */ | |
5382 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5383 | |
5384 | return 0; | |
5385 | } | |
5386 | ||
996c9314 | 5387 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5388 | { |
5389 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5390 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5391 | struct listnode *node = NULL; |
18abc1eb | 5392 | struct listnode *next = NULL; |
f1f8b53c | 5393 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5394 | |
5395 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5396 | if (!bgp_vrf) { | |
af4c2728 | 5397 | flog_err( |
e50f7cfd | 5398 | EC_BGP_NO_DFLT, |
996c9314 LB |
5399 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5400 | l3vni); | |
fe1dc5a3 MK |
5401 | return -1; |
5402 | } | |
5403 | ||
5e53dce3 T |
5404 | bgp_evpn = bgp_get_evpn(); |
5405 | if (!bgp_evpn) { | |
af4c2728 | 5406 | flog_err( |
e50f7cfd | 5407 | EC_BGP_NO_DFLT, |
3621ebc5 | 5408 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5409 | l3vni); |
f1f8b53c MK |
5410 | return -1; |
5411 | } | |
5412 | ||
d846168d | 5413 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5414 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5415 | * routes. This will uninstalling the routes from zebra and decremnt the |
5416 | * bgp info count. | |
523cafc4 | 5417 | */ |
d846168d | 5418 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5419 | |
06d2e8f3 MK |
5420 | /* delete/withdraw all type-5 routes */ |
5421 | delete_withdraw_vrf_routes(bgp_vrf); | |
5422 | ||
fe1dc5a3 MK |
5423 | /* remove the l3vni from vrf instance */ |
5424 | bgp_vrf->l3vni = 0; | |
5425 | ||
5426 | /* remove the Rmac from the BGP vrf */ | |
5427 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5428 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5429 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5430 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5431 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5432 | |
530e8a6e | 5433 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5434 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5435 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5436 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5437 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5438 | } |
530e8a6e CS |
5439 | |
5440 | /* remove default export RT */ | |
5441 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5442 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5443 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5444 | } |
fe1dc5a3 | 5445 | |
f1f8b53c | 5446 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5447 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5448 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5449 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5450 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5451 | } |
5452 | } | |
fe1dc5a3 | 5453 | |
18abc1eb | 5454 | /* If any L2VNIs point to this instance, unlink them. */ |
5455 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5456 | bgpevpn_unlink_from_l3vni(vpn); | |
5457 | ||
ff9d54fb CS |
5458 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5459 | ||
fe1dc5a3 MK |
5460 | /* Delete the instance if it was autocreated */ |
5461 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5462 | bgp_delete(bgp_vrf); | |
5463 | ||
5464 | return 0; | |
5465 | } | |
5466 | ||
128ea8ab | 5467 | /* |
5468 | * Handle del of a local VNI. | |
5469 | */ | |
d62a17ae | 5470 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5471 | { |
d62a17ae | 5472 | struct bgpevpn *vpn; |
128ea8ab | 5473 | |
d62a17ae | 5474 | /* Locate VNI hash */ |
5475 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5476 | if (!vpn) { | |
1e00627b | 5477 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5478 | flog_warn( |
e50f7cfd | 5479 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5480 | "%u: VNI hash entry for VNI %u not found at DEL", |
5481 | bgp->vrf_id, vni); | |
d62a17ae | 5482 | return 0; |
5483 | } | |
128ea8ab | 5484 | |
d62a17ae | 5485 | /* Remove all local EVPN routes and schedule for processing (to |
5486 | * withdraw from peers). | |
5487 | */ | |
5488 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5489 | |
db0e1937 MK |
5490 | /* |
5491 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5492 | */ | |
5493 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5494 | ||
d62a17ae | 5495 | /* Clear "live" flag and see if hash needs to be freed. */ |
5496 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5497 | if (!is_vni_configured(vpn)) | |
5498 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5499 | |
d62a17ae | 5500 | return 0; |
128ea8ab | 5501 | } |
5502 | ||
5503 | /* | |
d1911c26 | 5504 | * Handle add (or update) of a local VNI. The VNI changes we care |
5505 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5506 | */ |
d62a17ae | 5507 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5508 | struct in_addr originator_ip, |
5509 | vrf_id_t tenant_vrf_id, | |
5510 | struct in_addr mcast_grp) | |
5511 | ||
d62a17ae | 5512 | { |
5513 | struct bgpevpn *vpn; | |
5514 | struct prefix_evpn p; | |
5515 | ||
d62a17ae | 5516 | /* Lookup VNI. If present and no change, exit. */ |
5517 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5518 | if (vpn) { |
29c53922 | 5519 | |
d1911c26 | 5520 | if (is_vni_live(vpn) |
5521 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5522 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5523 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5524 | /* Probably some other param has changed that we don't | |
5525 | * care about. */ | |
5526 | return 0; | |
5527 | ||
76d07c7a AK |
5528 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5529 | ||
d1911c26 | 5530 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5531 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5532 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5533 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5534 | bgpevpn_link_to_l3vni(vpn); |
5535 | } | |
29c53922 | 5536 | |
d1911c26 | 5537 | /* If tunnel endpoint IP has changed, update (and delete prior |
5538 | * type-3 route, if needed.) | |
5539 | */ | |
5540 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5541 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5542 | |
d1911c26 | 5543 | /* Update all routes with new endpoint IP and/or export RT |
5544 | * for VRFs | |
5545 | */ | |
5546 | if (is_vni_live(vpn)) | |
5547 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5548 | } |
5549 | ||
5550 | /* Create or update as appropriate. */ | |
5551 | if (!vpn) { | |
76d07c7a AK |
5552 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5553 | mcast_grp); | |
d62a17ae | 5554 | if (!vpn) { |
af4c2728 | 5555 | flog_err( |
e50f7cfd | 5556 | EC_BGP_VNI, |
d62a17ae | 5557 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5558 | bgp->vrf_id, vni); | |
5559 | return -1; | |
5560 | } | |
5561 | } | |
5562 | ||
db0e1937 | 5563 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5564 | if (is_vni_live(vpn)) |
5565 | return 0; | |
5566 | ||
d62a17ae | 5567 | /* Mark as "live" */ |
5568 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5569 | ||
db0e1937 MK |
5570 | /* tunnel is now active, add tunnel-ip to db */ |
5571 | bgp_tip_add(bgp, &originator_ip); | |
5572 | ||
5573 | /* filter routes as nexthop database has changed */ | |
5574 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5575 | ||
fd069644 DS |
5576 | /* |
5577 | * Create EVPN type-3 route and schedule for processing. | |
5578 | * | |
5579 | * RT-3 only if doing head-end replication | |
5580 | */ | |
833b8a50 AK |
5581 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5582 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5583 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5584 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5585 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5586 | "%u: Type3 route creation failure for VNI %u", | |
5587 | bgp->vrf_id, vni); | |
5588 | return -1; | |
5589 | } | |
d62a17ae | 5590 | } |
5591 | ||
5592 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5593 | * VNI, | |
5594 | * install them. | |
5595 | */ | |
5596 | install_routes_for_vni(bgp, vpn); | |
5597 | ||
d7d97010 MK |
5598 | /* If we are advertising gateway mac-ip |
5599 | It needs to be conveyed again to zebra */ | |
5600 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5601 | ||
df070e6f CS |
5602 | /* advertise svi mac-ip knob to zebra */ |
5603 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5604 | ||
d62a17ae | 5605 | return 0; |
b18825eb | 5606 | } |
14c1a7bf | 5607 | |
fd069644 DS |
5608 | /* |
5609 | * Handle change in setting for BUM handling. The supported values | |
5610 | * are head-end replication and dropping all BUM packets. Any change | |
5611 | * should be registered with zebra. Also, if doing head-end replication, | |
5612 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5613 | * to be dropped, the RT-3s must be withdrawn. | |
5614 | */ | |
5615 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5616 | { | |
5617 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5618 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5619 | "Flooding" : "Flooding Disabled"); | |
5620 | ||
5621 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5622 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5623 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5624 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5625 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5626 | } | |
5627 | ||
7724c0a1 | 5628 | /* |
5629 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5630 | * EVPN routes from peers. | |
5631 | */ | |
d62a17ae | 5632 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5633 | { |
e3b78da8 | 5634 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5635 | void *))cleanup_vni_on_disable, |
5636 | bgp); | |
7724c0a1 | 5637 | } |
5638 | ||
14c1a7bf | 5639 | /* |
5640 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5641 | * BGP instance (default) is being freed. | |
5642 | */ | |
d62a17ae | 5643 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5644 | { |
1525e99f | 5645 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5646 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5647 | bgp); |
5648 | ||
5649 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5650 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5651 | |
5652 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5653 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5654 | |
5655 | hash_free(bgp->vnihash); | |
d62a17ae | 5656 | bgp->vnihash = NULL; |
1525e99f | 5657 | |
6a154c88 DL |
5658 | list_delete(&bgp->vrf_import_rtl); |
5659 | list_delete(&bgp->vrf_export_rtl); | |
5660 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5661 | } |
5662 | ||
5663 | /* | |
5664 | * Initialization for EVPN | |
5665 | * Create | |
5666 | * VNI hash table | |
5667 | * hash for RT to VNI | |
14c1a7bf | 5668 | */ |
d62a17ae | 5669 | void bgp_evpn_init(struct bgp *bgp) |
5670 | { | |
5671 | bgp->vnihash = | |
5672 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
5673 | bgp->import_rt_hash = | |
5674 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5675 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5676 | bgp->vrf_import_rt_hash = |
5677 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5678 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5679 | bgp->vrf_import_rtl = list_new(); |
5680 | bgp->vrf_import_rtl->cmp = | |
5681 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5682 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5683 | bgp->vrf_export_rtl = list_new(); |
5684 | bgp->vrf_export_rtl->cmp = | |
5685 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5686 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5687 | bgp->l2vnis = list_new(); |
64465785 | 5688 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5689 | /* By default Duplicate Address Dection is enabled. |
5690 | * Max-moves (N) 5, detection time (M) 180 | |
5691 | * default action is warning-only | |
5692 | * freeze action permanently freezes address, | |
5693 | * and freeze time (auto-recovery) is disabled. | |
5694 | */ | |
5695 | if (bgp->evpn_info) { | |
5696 | bgp->evpn_info->dup_addr_detect = true; | |
5697 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5698 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5699 | bgp->evpn_info->dad_freeze = false; | |
5700 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5701 | /* Initialize zebra vxlan */ |
5702 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
5703 | /* Enable PIP feature by default for bgp vrf instance */ |
5704 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
5705 | struct bgp *bgp_default; | |
5706 | ||
5707 | bgp->evpn_info->advertise_pip = true; | |
5708 | bgp_default = bgp_get_default(); | |
5709 | if (bgp_default) | |
5710 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
5711 | } | |
85c8d83b | 5712 | } |
fd069644 DS |
5713 | |
5714 | /* Default BUM handling is to do head-end replication. */ | |
5715 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5716 | } |
10ebe1ab MK |
5717 | |
5718 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5719 | { | |
5720 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5721 | } | |
44c69747 LK |
5722 | |
5723 | /* | |
5724 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
5725 | */ | |
5f040085 | 5726 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
5727 | { |
5728 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5729 | ||
5730 | if (!pfx || pfx->family != AF_EVPN) | |
5731 | return 0; | |
5732 | ||
5733 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
5734 | return 0; | |
5735 | ||
5736 | return evp->prefix.prefix_addr.ip_prefix_length; | |
5737 | } | |
7c312383 AD |
5738 | |
5739 | /* | |
5740 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
5741 | */ | |
5a1ae2c2 | 5742 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
5743 | { |
5744 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5745 | ||
5746 | /* | |
e11329ca | 5747 | * EVPN routes should be marked as valid only if the nexthop is |
5748 | * reachable. Only if this happens, the route should be imported | |
5749 | * (into VNI or VRF routing tables) and/or advertised. | |
5750 | * Note: This is currently applied for EVPN type-2, type-3 and | |
5751 | * type-5 routes. It may be tweaked later on for other routes, or | |
5752 | * even removed completely when all routes are handled. | |
7c312383 AD |
5753 | */ |
5754 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 5755 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
5756 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
5757 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
5758 | return true; |
5759 | ||
5760 | return false; | |
5761 | } |