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