]>
Commit | Line | Data |
---|---|---|
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 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 43 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 44 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 45 | #include "bgpd/bgp_encap_types.h" |
46 | #include "bgpd/bgp_debug.h" | |
14454c9f | 47 | #include "bgpd/bgp_errors.h" |
128ea8ab | 48 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 49 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 50 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 51 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 52 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 53 | #include "bgpd/bgp_vty.h" |
128ea8ab | 54 | |
55 | /* | |
56 | * Definitions and external declarations. | |
57 | */ | |
128ea8ab | 58 | DEFINE_QOBJ_TYPE(bgpevpn) |
c44ab6f1 | 59 | DEFINE_QOBJ_TYPE(bgp_evpn_es) |
128ea8ab | 60 | |
61 | ||
62 | /* | |
63 | * Static function declarations | |
64 | */ | |
d62a17ae | 65 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
9c7edc03 AK |
66 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
67 | struct bgpevpn *vpn, | |
68 | struct bgp_node *rn, struct bgp_path_info *local_pi, | |
69 | const char *caller); | |
70 | static struct in_addr zero_vtep_ip; | |
14c1a7bf | 71 | |
72 | /* | |
73 | * Private functions. | |
74 | */ | |
75 | ||
76 | /* | |
77 | * Make vni hash key. | |
78 | */ | |
d8b87afe | 79 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 80 | { |
d8b87afe | 81 | const struct bgpevpn *vpn = p; |
d62a17ae | 82 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 83 | } |
84 | ||
85 | /* | |
86 | * Comparison function for vni hash | |
87 | */ | |
74df8d6d | 88 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 89 | { |
d62a17ae | 90 | const struct bgpevpn *vpn1 = p1; |
91 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 92 | |
d62a17ae | 93 | if (!vpn1 && !vpn2) |
74df8d6d | 94 | return true; |
d62a17ae | 95 | if (!vpn1 || !vpn2) |
74df8d6d | 96 | return false; |
d62a17ae | 97 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 98 | } |
99 | ||
c44ab6f1 | 100 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
101 | { |
102 | const struct bgpevpn *vpn1 = p1; | |
103 | const struct bgpevpn *vpn2 = p2; | |
104 | ||
105 | return vpn1->vni - vpn2->vni; | |
106 | } | |
107 | ||
10ebe1ab MK |
108 | /* |
109 | * Make vrf import route target hash key. | |
110 | */ | |
d8b87afe | 111 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 112 | { |
d8b87afe QY |
113 | const struct vrf_irt_node *irt = p; |
114 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
115 | |
116 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
117 | } |
118 | ||
119 | /* | |
120 | * Comparison function for vrf import rt hash | |
121 | */ | |
74df8d6d | 122 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
123 | { |
124 | const struct vrf_irt_node *irt1 = p1; | |
125 | const struct vrf_irt_node *irt2 = p2; | |
126 | ||
127 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 128 | return true; |
10ebe1ab MK |
129 | |
130 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 131 | return false; |
10ebe1ab MK |
132 | |
133 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
134 | } | |
135 | ||
136 | /* | |
f9b8094e | 137 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
138 | */ |
139 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
140 | { | |
5e53dce3 | 141 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
142 | struct vrf_irt_node *irt; |
143 | ||
5e53dce3 T |
144 | bgp_evpn = bgp_get_evpn(); |
145 | if (!bgp_evpn) { | |
e50f7cfd | 146 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 147 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
148 | return NULL; |
149 | } | |
150 | ||
151 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
152 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
153 | |
154 | irt->rt = *rt; | |
155 | irt->vrfs = list_new(); | |
156 | ||
157 | /* Add to hash */ | |
5e53dce3 | 158 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
159 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
160 | return NULL; | |
161 | } | |
162 | ||
163 | return irt; | |
164 | } | |
165 | ||
166 | /* | |
167 | * Free the vrf import rt node | |
168 | */ | |
169 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
170 | { | |
5e53dce3 | 171 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 172 | |
5e53dce3 T |
173 | bgp_evpn = bgp_get_evpn(); |
174 | if (!bgp_evpn) { | |
e50f7cfd | 175 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 176 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
177 | return; |
178 | } | |
179 | ||
5e53dce3 | 180 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 181 | list_delete(&irt->vrfs); |
10ebe1ab MK |
182 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
183 | } | |
184 | ||
185 | /* | |
186 | * Function to lookup Import RT node - used to map a RT to set of | |
187 | * VNIs importing routes with that RT. | |
188 | */ | |
189 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
190 | { | |
5e53dce3 | 191 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
192 | struct vrf_irt_node *irt; |
193 | struct vrf_irt_node tmp; | |
194 | ||
5e53dce3 T |
195 | bgp_evpn = bgp_get_evpn(); |
196 | if (!bgp_evpn) { | |
f9b8094e T |
197 | flog_err( |
198 | EC_BGP_NO_DFLT, | |
199 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
200 | return NULL; |
201 | } | |
202 | ||
203 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
204 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 205 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
206 | return irt; |
207 | } | |
208 | ||
209 | /* | |
210 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
211 | */ | |
996c9314 | 212 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
213 | { |
214 | struct listnode *node = NULL, *nnode = NULL; | |
215 | struct bgp *tmp_bgp_vrf = NULL; | |
216 | ||
217 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
218 | if (tmp_bgp_vrf == bgp_vrf) | |
219 | return 1; | |
220 | } | |
221 | return 0; | |
222 | } | |
223 | ||
14c1a7bf | 224 | /* |
225 | * Make import route target hash key. | |
226 | */ | |
d8b87afe | 227 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 228 | { |
d8b87afe QY |
229 | const struct irt_node *irt = p; |
230 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
231 | |
232 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 233 | } |
234 | ||
235 | /* | |
236 | * Comparison function for import rt hash | |
237 | */ | |
74df8d6d | 238 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 239 | { |
d62a17ae | 240 | const struct irt_node *irt1 = p1; |
241 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 242 | |
d62a17ae | 243 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 244 | return true; |
14c1a7bf | 245 | |
d62a17ae | 246 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 247 | return false; |
14c1a7bf | 248 | |
d62a17ae | 249 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 250 | } |
251 | ||
7724c0a1 | 252 | /* |
128ea8ab | 253 | * Create a new import_rt |
254 | */ | |
d62a17ae | 255 | static struct irt_node *import_rt_new(struct bgp *bgp, |
256 | struct ecommunity_val *rt) | |
128ea8ab | 257 | { |
d62a17ae | 258 | struct irt_node *irt; |
128ea8ab | 259 | |
d62a17ae | 260 | if (!bgp) |
261 | return NULL; | |
128ea8ab | 262 | |
d62a17ae | 263 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 264 | |
d62a17ae | 265 | irt->rt = *rt; |
266 | irt->vnis = list_new(); | |
128ea8ab | 267 | |
d62a17ae | 268 | /* Add to hash */ |
269 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
270 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
271 | return NULL; | |
272 | } | |
128ea8ab | 273 | |
d62a17ae | 274 | return irt; |
128ea8ab | 275 | } |
276 | ||
277 | /* | |
278 | * Free the import rt node | |
7724c0a1 | 279 | */ |
d62a17ae | 280 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 281 | { |
d62a17ae | 282 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 283 | list_delete(&irt->vnis); |
d62a17ae | 284 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 285 | } |
286 | ||
14c1a7bf | 287 | /* |
128ea8ab | 288 | * Function to lookup Import RT node - used to map a RT to set of |
289 | * VNIs importing routes with that RT. | |
290 | */ | |
d62a17ae | 291 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
292 | struct ecommunity_val *rt) | |
128ea8ab | 293 | { |
d62a17ae | 294 | struct irt_node *irt; |
295 | struct irt_node tmp; | |
128ea8ab | 296 | |
d62a17ae | 297 | memset(&tmp, 0, sizeof(struct irt_node)); |
298 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
299 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
300 | return irt; | |
128ea8ab | 301 | } |
302 | ||
303 | /* | |
304 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
305 | */ | |
d62a17ae | 306 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 307 | { |
d62a17ae | 308 | struct listnode *node, *nnode; |
309 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 310 | |
d62a17ae | 311 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
312 | if (tmp_vpn == vpn) | |
313 | return 1; | |
314 | } | |
128ea8ab | 315 | |
d62a17ae | 316 | return 0; |
128ea8ab | 317 | } |
318 | ||
319 | /* | |
320 | * Compare Route Targets. | |
321 | */ | |
d62a17ae | 322 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
323 | struct ecommunity *ecom2) | |
128ea8ab | 324 | { |
d62a17ae | 325 | if (ecom1 && !ecom2) |
326 | return -1; | |
128ea8ab | 327 | |
d62a17ae | 328 | if (!ecom1 && ecom2) |
329 | return 1; | |
128ea8ab | 330 | |
d62a17ae | 331 | if (!ecom1 && !ecom2) |
332 | return 0; | |
128ea8ab | 333 | |
d62a17ae | 334 | if (ecom1->str && !ecom2->str) |
335 | return -1; | |
128ea8ab | 336 | |
d62a17ae | 337 | if (!ecom1->str && ecom2->str) |
338 | return 1; | |
128ea8ab | 339 | |
d62a17ae | 340 | if (!ecom1->str && !ecom2->str) |
341 | return 0; | |
128ea8ab | 342 | |
d62a17ae | 343 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 344 | } |
345 | ||
987d8198 DS |
346 | static void evpn_xxport_delete_ecomm(void *val) |
347 | { | |
348 | struct ecommunity *ecomm = val; | |
349 | ecommunity_free(&ecomm); | |
350 | } | |
351 | ||
128ea8ab | 352 | /* |
353 | * Mask off global-admin field of specified extended community (RT), | |
354 | * just retain the local-admin field. | |
355 | */ | |
d62a17ae | 356 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
357 | struct ecommunity_val *src) | |
128ea8ab | 358 | { |
d7c0a89a | 359 | uint8_t type; |
128ea8ab | 360 | |
d62a17ae | 361 | type = src->val[0]; |
362 | dst->val[0] = 0; | |
363 | if (type == ECOMMUNITY_ENCODE_AS) { | |
364 | dst->val[2] = dst->val[3] = 0; | |
365 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
366 | || type == ECOMMUNITY_ENCODE_IP) { | |
367 | dst->val[2] = dst->val[3] = 0; | |
368 | dst->val[4] = dst->val[5] = 0; | |
369 | } | |
128ea8ab | 370 | } |
371 | ||
10ebe1ab MK |
372 | /* |
373 | * Map one RT to specified VRF. | |
374 | * bgp_vrf = BGP vrf instance | |
375 | */ | |
996c9314 | 376 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
377 | { |
378 | struct vrf_irt_node *irt = NULL; | |
379 | struct ecommunity_val eval_tmp; | |
380 | ||
381 | /* If using "automatic" RT, | |
382 | * we only care about the local-admin sub-field. | |
383 | * This is to facilitate using L3VNI(VRF-VNI) | |
384 | * as the RT for EBGP peering too. | |
385 | */ | |
386 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 387 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
388 | mask_ecom_global_admin(&eval_tmp, eval); |
389 | ||
390 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
391 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
392 | /* Already mapped. */ | |
393 | return; | |
10ebe1ab | 394 | |
e066d6d0 | 395 | if (!irt) |
10ebe1ab | 396 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
397 | |
398 | /* Add VRF to the list for this RT. */ | |
399 | listnode_add(irt->vrfs, bgp_vrf); | |
400 | } | |
401 | ||
402 | /* | |
403 | * Unmap specified VRF from specified RT. If there are no other | |
404 | * VRFs for this RT, then the RT hash is deleted. | |
405 | * bgp_vrf: BGP VRF specific instance | |
406 | */ | |
996c9314 | 407 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
408 | { |
409 | /* Delete VRF from list for this RT. */ | |
410 | listnode_delete(irt->vrfs, bgp_vrf); | |
411 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
412 | vrf_import_rt_free(irt); |
413 | } | |
414 | } | |
415 | ||
128ea8ab | 416 | /* |
417 | * Map one RT to specified VNI. | |
14c1a7bf | 418 | */ |
d62a17ae | 419 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
420 | struct ecommunity_val *eval) | |
128ea8ab | 421 | { |
d62a17ae | 422 | struct irt_node *irt; |
423 | struct ecommunity_val eval_tmp; | |
128ea8ab | 424 | |
d62a17ae | 425 | /* If using "automatic" RT, we only care about the local-admin |
426 | * sub-field. | |
427 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
428 | */ | |
429 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
430 | if (!is_import_rt_configured(vpn)) | |
431 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 432 | |
d62a17ae | 433 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 434 | if (irt) |
d62a17ae | 435 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
436 | /* Already mapped. */ | |
437 | return; | |
128ea8ab | 438 | |
d62a17ae | 439 | if (!irt) { |
440 | irt = import_rt_new(bgp, &eval_tmp); | |
441 | assert(irt); | |
442 | } | |
128ea8ab | 443 | |
d62a17ae | 444 | /* Add VNI to the hash list for this RT. */ |
445 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 446 | } |
447 | ||
448 | /* | |
449 | * Unmap specified VNI from specified RT. If there are no other | |
450 | * VNIs for this RT, then the RT hash is deleted. | |
451 | */ | |
d62a17ae | 452 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
453 | struct irt_node *irt) | |
14c1a7bf | 454 | { |
d62a17ae | 455 | /* Delete VNI from hash list for this RT. */ |
456 | listnode_delete(irt->vnis, vpn); | |
457 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 458 | import_rt_free(bgp, irt); |
459 | } | |
14c1a7bf | 460 | } |
461 | ||
0ca10580 | 462 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 463 | const struct prefix_evpn *p, |
0ca10580 CS |
464 | struct attr *attr, uint8_t flags) |
465 | { | |
466 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
467 | ||
468 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
469 | if (!bgp_vrf) | |
470 | return; | |
471 | ||
b96cafa3 CS |
472 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
473 | return; | |
474 | ||
475 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
476 | * in case of route is self MAC-IP, | |
477 | * advertise-pip and advertise-svi-ip features | |
478 | * are enabled. | |
479 | * Otherwise, for all host MAC-IP route's | |
27727001 | 480 | * copy anycast RMAC. |
b96cafa3 CS |
481 | */ |
482 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
483 | && bgp_vrf->evpn_info->advertise_pip && | |
484 | bgp_vrf->evpn_info->is_anycast_mac) { | |
485 | /* copy sys rmac */ | |
486 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
487 | ETH_ALEN); | |
488 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
489 | attr->mp_nexthop_global_in = | |
490 | bgp_vrf->evpn_info->pip_ip; | |
491 | } else | |
492 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 493 | } |
b96cafa3 | 494 | |
128ea8ab | 495 | /* |
496 | * Create RT extended community automatically from passed information: | |
497 | * of the form AS:VNI. | |
498 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
499 | * the need is to get a RT value that will be unique across different | |
500 | * VNIs but the same across routers (in the same AS) for a particular | |
501 | * VNI. | |
502 | */ | |
c581d8b0 | 503 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 504 | { |
d62a17ae | 505 | struct ecommunity_val eval; |
b90d4580 CS |
506 | struct ecommunity *ecomadd, *ecom; |
507 | bool ecom_found = false; | |
508 | struct listnode *node; | |
128ea8ab | 509 | |
bf1061d8 VB |
510 | if (bgp->advertise_autort_rfc8365) |
511 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 512 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 513 | |
d62a17ae | 514 | ecomadd = ecommunity_new(); |
1207a5bc | 515 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
516 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
517 | if (ecommunity_cmp(ecomadd, ecom)) | |
518 | ecom_found = true; | |
519 | ||
520 | if (!ecom_found) | |
521 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 522 | } |
14c1a7bf | 523 | |
524 | /* | |
128ea8ab | 525 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
526 | * creation of a VNI. | |
527 | */ | |
d62a17ae | 528 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 529 | { |
d62a17ae | 530 | bgp_evpn_derive_auto_rd(bgp, vpn); |
531 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
532 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 533 | } |
534 | ||
1ec31309 | 535 | /* |
536 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
537 | */ | |
538 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
539 | { | |
540 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
541 | return; | |
542 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
543 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
544 | } | |
545 | ||
c44ab6f1 AK |
546 | struct bgp_node *bgp_global_evpn_node_get( |
547 | struct bgp_table *table, afi_t afi, | |
548 | safi_t safi, const struct prefix_evpn *evp, | |
549 | struct prefix_rd *prd) | |
550 | { | |
551 | struct prefix_evpn global_p; | |
552 | ||
553 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
554 | /* prefix in the global table doesn't include the VTEP-IP so | |
555 | * we need to create a different copy of the prefix | |
556 | */ | |
557 | evpn_type1_prefix_global_copy(&global_p, evp); | |
558 | evp = &global_p; | |
559 | } | |
560 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
561 | } | |
562 | ||
563 | struct bgp_node *bgp_global_evpn_node_lookup( | |
564 | struct bgp_table *table, afi_t afi, | |
565 | safi_t safi, const struct prefix_evpn *evp, | |
566 | struct prefix_rd *prd) | |
567 | { | |
568 | struct prefix_evpn global_p; | |
569 | ||
570 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
571 | /* prefix in the global table doesn't include the VTEP-IP so | |
572 | * we need to create a different copy of the prefix | |
573 | */ | |
574 | evpn_type1_prefix_global_copy(&global_p, evp); | |
575 | evp = &global_p; | |
576 | } | |
577 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
578 | } | |
579 | ||
128ea8ab | 580 | /* |
581 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 582 | */ |
d62a17ae | 583 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 584 | const struct prefix_evpn *p, |
d62a17ae | 585 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 586 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 587 | { |
588 | struct stream *s; | |
589 | int ipa_len; | |
590 | char buf1[ETHER_ADDR_STRLEN]; | |
591 | char buf2[INET6_ADDRSTRLEN]; | |
592 | char buf3[INET6_ADDRSTRLEN]; | |
c44ab6f1 | 593 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 594 | |
595 | /* Check socket. */ | |
596 | if (!zclient || zclient->sock < 0) | |
597 | return 0; | |
598 | ||
599 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
600 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
601 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
602 | zlog_debug( |
603 | "%s: No zebra instance to talk to, not installing remote macip", | |
604 | __func__); | |
d62a17ae | 605 | return 0; |
bb4ef1ae | 606 | } |
c44ab6f1 AK |
607 | |
608 | if (!esi) | |
609 | esi = zero_esi; | |
d62a17ae | 610 | s = zclient->obuf; |
611 | stream_reset(s); | |
612 | ||
996c9314 LB |
613 | zclient_create_header( |
614 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
615 | bgp->vrf_id); | |
d62a17ae | 616 | stream_putl(s, vpn->vni); |
3714a385 | 617 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 618 | /* IP address length and IP address, if any. */ |
3714a385 | 619 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 620 | stream_putl(s, 0); |
621 | else { | |
3714a385 | 622 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 623 | : IPV6_MAX_BYTELEN; |
624 | stream_putl(s, ipa_len); | |
3714a385 | 625 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 626 | } |
9c7edc03 AK |
627 | /* If the ESI is valid that becomes the nexthop; tape out the |
628 | * VTEP-IP for that case | |
c44ab6f1 | 629 | */ |
9c7edc03 | 630 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 631 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
632 | else |
633 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 634 | |
ead40654 | 635 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 636 | /* Also TX the sequence number of the best route. */ |
637 | if (add) { | |
ead40654 | 638 | stream_putc(s, flags); |
f07e1c99 | 639 | stream_putl(s, seq); |
c44ab6f1 | 640 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 641 | } |
d62a17ae | 642 | |
643 | stream_putw_at(s, 0, stream_get_endp(s)); | |
644 | ||
645 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 646 | zlog_debug( |
f07e1c99 | 647 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 648 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 649 | prefix_mac2str(&p->prefix.macip_addr.mac, |
650 | buf1, sizeof(buf1)), | |
651 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 652 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
653 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
654 | sizeof(buf2))); | |
d62a17ae | 655 | |
656 | return zclient_send_message(zclient); | |
7ef5a232 | 657 | } |
b18825eb | 658 | |
128ea8ab | 659 | /* |
660 | * Add (update) or delete remote VTEP from zebra. | |
661 | */ | |
d62a17ae | 662 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
663 | const struct prefix_evpn *p, |
664 | int flood_control, int add) | |
128ea8ab | 665 | { |
d62a17ae | 666 | struct stream *s; |
128ea8ab | 667 | |
d62a17ae | 668 | /* Check socket. */ |
669 | if (!zclient || zclient->sock < 0) | |
670 | return 0; | |
128ea8ab | 671 | |
d62a17ae | 672 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
673 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
674 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
675 | zlog_debug( |
676 | "%s: No zebra instance to talk to, not installing remote vtep", | |
677 | __func__); | |
d62a17ae | 678 | return 0; |
bb4ef1ae | 679 | } |
128ea8ab | 680 | |
d62a17ae | 681 | s = zclient->obuf; |
682 | stream_reset(s); | |
128ea8ab | 683 | |
996c9314 LB |
684 | zclient_create_header( |
685 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
686 | bgp->vrf_id); | |
d62a17ae | 687 | stream_putl(s, vpn->vni); |
3714a385 | 688 | if (is_evpn_prefix_ipaddr_v4(p)) |
689 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
690 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 691 | flog_err( |
e50f7cfd | 692 | EC_BGP_VTEP_INVALID, |
d62a17ae | 693 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
694 | add ? "ADD" : "DEL", vpn->vni); | |
695 | return -1; | |
696 | } | |
b16dd019 | 697 | stream_putl(s, flood_control); |
128ea8ab | 698 | |
d62a17ae | 699 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 700 | |
d62a17ae | 701 | if (bgp_debug_zebra(NULL)) |
702 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
703 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 704 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 705 | |
d62a17ae | 706 | return zclient_send_message(zclient); |
128ea8ab | 707 | } |
708 | ||
342dd0c6 | 709 | /* |
710 | * Build extended communities for EVPN prefix route. | |
711 | */ | |
712 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
713 | struct attr *attr) | |
714 | { | |
715 | struct ecommunity ecom_encap; | |
342dd0c6 | 716 | struct ecommunity_val eval; |
717 | struct ecommunity_val eval_rmac; | |
718 | bgp_encap_types tnl_type; | |
719 | struct listnode *node, *nnode; | |
720 | struct ecommunity *ecom; | |
fab92da7 | 721 | struct ecommunity *old_ecom; |
342dd0c6 | 722 | struct list *vrf_export_rtl = NULL; |
723 | ||
724 | /* Encap */ | |
725 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
726 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
727 | encode_encap_extcomm(tnl_type, &eval); | |
728 | ecom_encap.size = 1; | |
d7c0a89a | 729 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 730 | |
731 | /* Add Encap */ | |
fab92da7 | 732 | if (attr->ecommunity) { |
733 | old_ecom = attr->ecommunity; | |
734 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
735 | if (!old_ecom->refcnt) | |
736 | ecommunity_free(&old_ecom); | |
737 | } else | |
738 | ecom = ecommunity_dup(&ecom_encap); | |
739 | attr->ecommunity = ecom; | |
342dd0c6 | 740 | |
741 | /* Add the export RTs for L3VNI/VRF */ | |
742 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
743 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
744 | attr->ecommunity = | |
745 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 746 | |
747 | /* add the router mac extended community */ | |
748 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 749 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 750 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 751 | } |
752 | ||
753 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
754 | } | |
755 | ||
128ea8ab | 756 | /* |
1ec31309 | 757 | * Build extended communities for EVPN route. |
758 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
759 | * and ENCAP extended communities are applicable for all routes. | |
760 | * The default gateway extended community and MAC mobility (sticky) extended | |
761 | * community are added as needed based on passed settings - only for type-2 | |
762 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
763 | * added, if present, based on passed settings - only for non-link-local | |
764 | * type-2 routes. | |
128ea8ab | 765 | */ |
7ec156a9 | 766 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 767 | int add_l3_ecomm) |
128ea8ab | 768 | { |
d62a17ae | 769 | struct ecommunity ecom_encap; |
770 | struct ecommunity ecom_sticky; | |
ead40654 | 771 | struct ecommunity ecom_default_gw; |
68e33151 | 772 | struct ecommunity ecom_na; |
d62a17ae | 773 | struct ecommunity_val eval; |
774 | struct ecommunity_val eval_sticky; | |
ead40654 | 775 | struct ecommunity_val eval_default_gw; |
bc59a672 | 776 | struct ecommunity_val eval_rmac; |
68e33151 | 777 | struct ecommunity_val eval_na; |
9c7edc03 | 778 | bool proxy; |
68e33151 | 779 | |
d62a17ae | 780 | bgp_encap_types tnl_type; |
781 | struct listnode *node, *nnode; | |
782 | struct ecommunity *ecom; | |
d7c0a89a | 783 | uint32_t seqnum; |
7a3e76f1 | 784 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 785 | |
d62a17ae | 786 | /* Encap */ |
787 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
788 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
789 | encode_encap_extcomm(tnl_type, &eval); | |
790 | ecom_encap.size = 1; | |
d7c0a89a | 791 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 792 | |
d62a17ae | 793 | /* Add Encap */ |
794 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 795 | |
7a3e76f1 | 796 | /* Add the export RTs for L2VNI */ |
d62a17ae | 797 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
798 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 799 | |
1ec31309 | 800 | /* Add the export RTs for L3VNI if told to - caller determines |
801 | * when this should be done. | |
523cafc4 | 802 | */ |
1ec31309 | 803 | if (add_l3_ecomm) { |
7ec156a9 MK |
804 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
805 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
806 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
807 | ecom)) | |
996c9314 LB |
808 | attr->ecommunity = ecommunity_merge( |
809 | attr->ecommunity, ecom); | |
7ec156a9 | 810 | } |
f1f8b53c | 811 | } |
7a3e76f1 | 812 | |
1ec31309 | 813 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 814 | if (attr->sticky) { |
815 | seqnum = 0; | |
816 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
817 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
818 | ecom_sticky.size = 1; | |
d7c0a89a | 819 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 820 | attr->ecommunity = |
821 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
822 | } | |
c85c03c7 | 823 | |
1ec31309 | 824 | /* Add RMAC, if told to. */ |
825 | if (add_l3_ecomm) { | |
bc59a672 | 826 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 827 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
828 | } |
829 | ||
1ec31309 | 830 | /* Add default gateway, if needed. */ |
ead40654 MK |
831 | if (attr->default_gw) { |
832 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
833 | encode_default_gw_extcomm(&eval_default_gw); | |
834 | ecom_default_gw.size = 1; | |
835 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
836 | attr->ecommunity = |
837 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
838 | } |
839 | ||
9c7edc03 AK |
840 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
841 | if (attr->router_flag || proxy) { | |
68e33151 | 842 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 843 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 CS |
844 | ecom_na.size = 1; |
845 | ecom_na.val = (uint8_t *)eval_na.val; | |
846 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
847 | &ecom_na); | |
848 | } | |
849 | ||
d62a17ae | 850 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 851 | } |
852 | ||
853 | /* | |
854 | * Add MAC mobility extended community to attribute. | |
855 | */ | |
d7c0a89a | 856 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 857 | { |
858 | struct ecommunity ecom_tmp; | |
859 | struct ecommunity_val eval; | |
d7c0a89a | 860 | uint8_t *ecom_val_ptr; |
d62a17ae | 861 | int i; |
d7c0a89a | 862 | uint8_t *pnt; |
d62a17ae | 863 | int type = 0; |
864 | int sub_type = 0; | |
865 | ||
866 | /* Build MM */ | |
867 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
868 | ||
869 | /* Find current MM ecommunity */ | |
421bb26a | 870 | ecom_val_ptr = NULL; |
d62a17ae | 871 | |
872 | if (attr->ecommunity) { | |
873 | for (i = 0; i < attr->ecommunity->size; i++) { | |
874 | pnt = attr->ecommunity->val + (i * 8); | |
875 | type = *pnt++; | |
876 | sub_type = *pnt++; | |
877 | ||
878 | if (type == ECOMMUNITY_ENCODE_EVPN | |
879 | && sub_type | |
880 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 DA |
881 | ecom_val_ptr = |
882 | (attr->ecommunity->val + (i * 8)); | |
d62a17ae | 883 | break; |
884 | } | |
885 | } | |
886 | } | |
887 | ||
888 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
889 | if (ecom_val_ptr) { |
890 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 891 | } |
892 | /* Add MM to existing */ | |
893 | else { | |
894 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
895 | ecom_tmp.size = 1; | |
d7c0a89a | 896 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 897 | |
f9a78910 DS |
898 | if (attr->ecommunity) |
899 | attr->ecommunity = | |
900 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
901 | else | |
902 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 903 | } |
128ea8ab | 904 | } |
905 | ||
906 | /* Install EVPN route into zebra. */ | |
d62a17ae | 907 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
908 | const struct prefix_evpn *p, |
909 | struct bgp_path_info *pi) | |
128ea8ab | 910 | { |
d62a17ae | 911 | int ret; |
d594a14c | 912 | uint8_t flags; |
b16dd019 | 913 | int flood_control; |
9c7edc03 | 914 | uint32_t seq; |
128ea8ab | 915 | |
d594a14c AK |
916 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
917 | flags = 0; | |
9c7edc03 AK |
918 | |
919 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
920 | if (pi->attr->sticky) | |
921 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
922 | if (pi->attr->default_gw) | |
923 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
924 | if (is_evpn_prefix_ipaddr_v6(p) && | |
925 | pi->attr->router_flag) | |
926 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
927 | ||
928 | seq = mac_mobility_seqnum(pi->attr); | |
929 | /* if local ES notify zebra that this is a sync path */ | |
930 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
931 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
932 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
933 | SET_FLAG(flags, | |
934 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
935 | } | |
936 | } else { | |
937 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
938 | return 0; | |
939 | ||
940 | /* if a local path is being turned around and sent | |
941 | * to zebra it is because it is a sync path on | |
942 | * a local ES | |
943 | */ | |
944 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
945 | /* supply the highest peer seq number to zebra | |
946 | * for MM seq syncing | |
947 | */ | |
948 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
949 | /* if any of the paths from the peer have the ROUTER | |
950 | * flag set install the local entry as a router entry | |
951 | */ | |
952 | if (is_evpn_prefix_ipaddr_v6(p) && | |
953 | (pi->attr->es_flags & | |
954 | ATTR_ES_PEER_ROUTER)) | |
955 | SET_FLAG(flags, | |
956 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
957 | ||
958 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
959 | SET_FLAG(flags, | |
960 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
961 | } | |
962 | ||
d594a14c | 963 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
964 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
965 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
966 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
967 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 968 | } else { |
b16dd019 AK |
969 | switch (pi->attr->pmsi_tnl_type) { |
970 | case PMSI_TNLTYPE_INGR_REPL: | |
971 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
972 | break; | |
973 | ||
974 | case PMSI_TNLTYPE_PIM_SM: | |
975 | flood_control = VXLAN_FLOOD_PIM_SM; | |
976 | break; | |
977 | ||
978 | default: | |
979 | flood_control = VXLAN_FLOOD_DISABLED; | |
980 | break; | |
981 | } | |
982 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 983 | } |
128ea8ab | 984 | |
d62a17ae | 985 | return ret; |
128ea8ab | 986 | } |
987 | ||
988 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 989 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 990 | const struct prefix_evpn *p, |
d62a17ae | 991 | struct in_addr remote_vtep_ip) |
128ea8ab | 992 | { |
d62a17ae | 993 | int ret; |
128ea8ab | 994 | |
d62a17ae | 995 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
996 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
997 | 0, 0, 0, NULL); |
998 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
999 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1000 | else |
b16dd019 AK |
1001 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1002 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1003 | |
d62a17ae | 1004 | return ret; |
128ea8ab | 1005 | } |
1006 | ||
1007 | /* | |
1008 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1009 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1010 | * from peers. | |
1011 | */ | |
d62a17ae | 1012 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1013 | struct bgp_dest *dest, |
9c7edc03 AK |
1014 | struct bgp_path_info *old_local, |
1015 | struct bgp_path_info *new_select) | |
128ea8ab | 1016 | { |
9bcb3eef | 1017 | struct bgp_dest *global_dest; |
40381db7 | 1018 | struct bgp_path_info *pi; |
d62a17ae | 1019 | afi_t afi = AFI_L2VPN; |
1020 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1021 | |
9c7edc03 AK |
1022 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
1023 | char prefix_buf[PREFIX_STRLEN]; | |
1024 | char esi_buf[ESI_STR_LEN]; | |
1025 | char esi_buf2[ESI_STR_LEN]; | |
1026 | struct prefix_evpn *evp = (struct prefix_evpn *)&dest->p; | |
1027 | ||
1028 | zlog_debug("local path deleted %s es %s; new-path-es %s", | |
1029 | prefix2str(evp, | |
1030 | prefix_buf, sizeof(prefix_buf)), | |
1031 | esi_to_str(&old_local->attr->esi, | |
1032 | esi_buf, sizeof(esi_buf)), | |
1033 | new_select ? esi_to_str(&new_select->attr->esi, | |
1034 | esi_buf2, sizeof(esi_buf2)) : ""); | |
1035 | } | |
1036 | ||
d62a17ae | 1037 | /* Locate route node in the global EVPN routing table. Note that |
1038 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1039 | * L3VPN routes. | |
1040 | */ | |
c44ab6f1 AK |
1041 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1042 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1043 | &vpn->prd); | |
9bcb3eef | 1044 | if (global_dest) { |
d62a17ae | 1045 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1046 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1047 | |
d62a17ae | 1048 | /* Schedule for processing - withdraws to peers happen from |
1049 | * this table. | |
1050 | */ | |
40381db7 | 1051 | if (pi) |
9bcb3eef DS |
1052 | bgp_process(bgp, global_dest, afi, safi); |
1053 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1054 | } |
128ea8ab | 1055 | |
d62a17ae | 1056 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1057 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1058 | } |
1059 | ||
1060 | /* | |
1061 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1062 | * if appropriate. | |
c44ab6f1 | 1063 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1064 | */ |
c44ab6f1 | 1065 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1066 | struct bgp_dest *dest) |
d62a17ae | 1067 | { |
4b7e6066 DS |
1068 | struct bgp_path_info *old_select, *new_select; |
1069 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1070 | afi_t afi = AFI_L2VPN; |
1071 | safi_t safi = SAFI_EVPN; | |
1072 | int ret = 0; | |
1073 | ||
1074 | /* Compute the best path. */ | |
9bcb3eef | 1075 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1076 | afi, safi); |
1077 | old_select = old_and_new.old; | |
1078 | new_select = old_and_new.new; | |
1079 | ||
1080 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1081 | * update to zebra RIB. |
1082 | * Remote routes and SYNC route (i.e. local routes with | |
1083 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1084 | * change. | |
d62a17ae | 1085 | */ |
1086 | if (old_select && old_select == new_select | |
1087 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1088 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1089 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1090 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1091 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1092 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1093 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1094 | ret = evpn_zebra_install( |
9bcb3eef DS |
1095 | bgp, vpn, |
1096 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1097 | dest), | |
d594a14c | 1098 | old_select); |
1defdda8 | 1099 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1100 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1101 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1102 | return ret; |
1103 | } | |
1104 | ||
1105 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1106 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1107 | |
1108 | /* bestpath has changed; update relevant fields and install or uninstall | |
1109 | * into the zebra RIB. | |
1110 | */ | |
1111 | if (old_select || new_select) | |
9bcb3eef | 1112 | bgp_bump_version(dest); |
d62a17ae | 1113 | |
1114 | if (old_select) | |
9bcb3eef | 1115 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1116 | if (new_select) { |
9bcb3eef DS |
1117 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1118 | bgp_path_info_unset_flag(dest, new_select, | |
1119 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1120 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1121 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1122 | } |
1123 | ||
9c7edc03 AK |
1124 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1125 | * to zebra | |
1126 | */ | |
d62a17ae | 1127 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1128 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1129 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1130 | ret = evpn_zebra_install( |
9bcb3eef DS |
1131 | bgp, vpn, |
1132 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1133 | new_select); |
d594a14c | 1134 | |
d62a17ae | 1135 | /* If an old best existed and it was a "local" route, the only |
1136 | * reason | |
1137 | * it would be supplanted is due to MAC mobility procedures. So, | |
1138 | * we | |
1139 | * need to do an implicit delete and withdraw that route from | |
1140 | * peers. | |
1141 | */ | |
9c7edc03 AK |
1142 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1143 | old_select && old_select->peer == bgp->peer_self | |
1144 | && old_select->type == ZEBRA_ROUTE_BGP | |
1145 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1146 | && vpn) | |
1147 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1148 | old_select, new_select); | |
d62a17ae | 1149 | } else { |
1150 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1151 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1152 | ret = evpn_zebra_uninstall( |
1153 | bgp, vpn, | |
9bcb3eef DS |
1154 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1155 | dest), | |
b54892e0 | 1156 | old_select->attr->nexthop); |
d62a17ae | 1157 | } |
1158 | ||
1159 | /* Clear any route change flags. */ | |
9bcb3eef | 1160 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1161 | |
18ee8310 | 1162 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1163 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1164 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1165 | |
1166 | return ret; | |
128ea8ab | 1167 | } |
1168 | ||
9c7edc03 AK |
1169 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1170 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1171 | { |
40381db7 | 1172 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1173 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1174 | |
9bcb3eef | 1175 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1176 | tmp_pi = tmp_pi->next) { |
1177 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1178 | local_pi = tmp_pi; |
9c7edc03 AK |
1179 | break; |
1180 | } | |
d62a17ae | 1181 | } |
c85c03c7 | 1182 | |
9c7edc03 | 1183 | return local_pi; |
c85c03c7 | 1184 | } |
1185 | ||
5e53dce3 | 1186 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1187 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1188 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1189 | struct attr *attr, int *route_changed) |
342dd0c6 | 1190 | { |
1191 | struct attr *attr_new = NULL; | |
40381db7 | 1192 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1193 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1194 | struct bgp_path_info *local_pi = NULL; |
1195 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1196 | |
5424b7ba | 1197 | *route_changed = 0; |
342dd0c6 | 1198 | /* locate the local route entry if any */ |
9bcb3eef | 1199 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1200 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1201 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1202 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1203 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1204 | local_pi = tmp_pi; | |
342dd0c6 | 1205 | } |
1206 | ||
2bb9eff4 | 1207 | /* |
0437e105 | 1208 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1209 | * Otherwise see if route attr has changed |
523cafc4 | 1210 | */ |
40381db7 | 1211 | if (!local_pi) { |
342dd0c6 | 1212 | |
5424b7ba MK |
1213 | /* route has changed as this is the first entry */ |
1214 | *route_changed = 1; | |
1215 | ||
342dd0c6 | 1216 | /* Add (or update) attribute to hash. */ |
1217 | attr_new = bgp_attr_intern(attr); | |
1218 | ||
1219 | /* create the route info from attribute */ | |
40381db7 | 1220 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1221 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1222 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1223 | |
b57ba6d2 | 1224 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1225 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1226 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1227 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1228 | pi->extra->num_labels = 1; | |
342dd0c6 | 1229 | |
1230 | /* add the route entry to route node*/ | |
9bcb3eef | 1231 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1232 | } else { |
1233 | ||
40381db7 DS |
1234 | tmp_pi = local_pi; |
1235 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1236 | |
1237 | /* attribute changed */ | |
1238 | *route_changed = 1; | |
1239 | ||
342dd0c6 | 1240 | /* The attribute has changed. */ |
1241 | /* Add (or update) attribute to hash. */ | |
1242 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1243 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1244 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1245 | |
1246 | /* Restore route, if needed. */ | |
40381db7 | 1247 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1248 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1249 | |
1250 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1251 | bgp_attr_unintern(&tmp_pi->attr); |
1252 | tmp_pi->attr = attr_new; | |
1253 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1254 | } |
1255 | } | |
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1260 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1261 | struct attr *src_attr) | |
342dd0c6 | 1262 | { |
1263 | afi_t afi = AFI_L2VPN; | |
1264 | safi_t safi = SAFI_EVPN; | |
1265 | struct attr attr; | |
9bcb3eef | 1266 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1267 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1268 | int route_changed = 0; |
342dd0c6 | 1269 | |
5e53dce3 T |
1270 | bgp_evpn = bgp_get_evpn(); |
1271 | if (!bgp_evpn) | |
faafdfa8 | 1272 | return 0; |
342dd0c6 | 1273 | |
2f69f6d3 | 1274 | /* Build path attribute for this route - use the source attr, if |
1275 | * present, else treat as locally originated. | |
1276 | */ | |
1277 | if (src_attr) | |
6f4f49b2 | 1278 | attr = *src_attr; |
2f69f6d3 | 1279 | else { |
1280 | memset(&attr, 0, sizeof(struct attr)); | |
1281 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1282 | } | |
5394a276 | 1283 | |
5394a276 CS |
1284 | /* Advertise Primary IP (PIP) is enabled, send individual |
1285 | * IP (default instance router-id) as nexthop. | |
1286 | * PIP is disabled or vrr interface is not present | |
27727001 | 1287 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1288 | */ |
1289 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1290 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1291 | attr.nexthop = bgp_vrf->originator_ip; | |
1292 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1293 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1294 | } else { |
27727001 CS |
1295 | /* copy sys rmac */ |
1296 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1297 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1298 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1299 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1300 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1301 | if (bgp_debug_zebra(NULL)) { | |
1302 | char buf1[PREFIX_STRLEN]; | |
1303 | ||
1304 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1305 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1306 | prefix2str(evp, buf1, sizeof(buf1))); | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | if (bgp_debug_zebra(NULL)) { | |
1311 | char buf[ETHER_ADDR_STRLEN]; | |
1312 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1313 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1314 | |
1315 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1316 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1317 | prefix2str(evp, buf1, sizeof(buf1)), | |
1318 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1319 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1320 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1321 | } |
1322 | ||
342dd0c6 | 1323 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1324 | |
1325 | /* Setup RT and encap extended community */ | |
1326 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1327 | ||
1328 | /* get the route node in global table */ | |
c44ab6f1 AK |
1329 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1330 | (const struct prefix_evpn *)evp, | |
1331 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1332 | assert(dest); |
342dd0c6 | 1333 | |
1334 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1335 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1336 | &route_changed); |
342dd0c6 | 1337 | |
1338 | /* schedule for processing and unlock node */ | |
5424b7ba | 1339 | if (route_changed) { |
9bcb3eef DS |
1340 | bgp_process(bgp_evpn, dest, afi, safi); |
1341 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1342 | } |
342dd0c6 | 1343 | |
1344 | /* uninten temporary */ | |
5ee65f6f | 1345 | if (!src_attr) |
1346 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1347 | return 0; |
1348 | } | |
1349 | ||
9c7edc03 AK |
1350 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
1351 | struct bgp_node *rn, uint32_t loc_seq, uint32_t *max_sync_seq, | |
1352 | bool *active_on_peer, bool *peer_router, | |
1353 | bool *proxy_from_peer) | |
1354 | { | |
1355 | struct bgp_path_info *tmp_pi; | |
1356 | struct bgp_path_info *second_best_path = NULL; | |
1357 | uint32_t tmp_mm_seq = 0; | |
1358 | esi_t *tmp_esi; | |
1359 | int paths_eq; | |
1360 | ||
1361 | /* find the best non-local path. a local path can only be present | |
1362 | * as best path | |
1363 | */ | |
1364 | for (tmp_pi = bgp_dest_get_bgp_path_info(rn); tmp_pi; | |
1365 | tmp_pi = tmp_pi->next) { | |
1366 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || | |
1367 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1368 | continue; | |
1369 | ||
1370 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1371 | second_best_path, &paths_eq)) | |
1372 | second_best_path = tmp_pi; | |
1373 | } | |
1374 | ||
1375 | if (!second_best_path) | |
1376 | return; | |
1377 | ||
1378 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1379 | /* if this has the same ES desination as the local path | |
1380 | * it is a sync path | |
1381 | */ | |
1382 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1383 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1384 | if (tmp_mm_seq < loc_seq) | |
1385 | return; | |
1386 | ||
1387 | /* we have a non-proxy path from the ES peer. */ | |
1388 | if (second_best_path->attr->es_flags & | |
1389 | ATTR_ES_PROXY_ADVERT) { | |
1390 | *proxy_from_peer = true; | |
1391 | } else { | |
1392 | *active_on_peer = true; | |
1393 | } | |
1394 | ||
1395 | if (second_best_path->attr->router_flag) | |
1396 | *peer_router = true; | |
1397 | ||
1398 | /* we use both proxy and non-proxy imports to | |
1399 | * determine the max sync sequence | |
1400 | */ | |
1401 | if (tmp_mm_seq > *max_sync_seq) | |
1402 | *max_sync_seq = tmp_mm_seq; | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1407 | * This is need for MM sequence number syncing and proxy advertisement. | |
1408 | * Note: The local path can only exist as a best path in the | |
1409 | * VPN route table. It will take precedence over all sync paths. | |
1410 | */ | |
1411 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
1412 | struct bgp_node *rn, struct attr *attr, uint32_t loc_seq, | |
1413 | bool setup_sync) | |
1414 | { | |
1415 | esi_t *esi; | |
1416 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1417 | ||
1418 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1419 | return; | |
1420 | ||
1421 | esi = bgp_evpn_attr_get_esi(attr); | |
1422 | if (bgp_evpn_is_esi_valid(esi)) { | |
1423 | if (setup_sync) { | |
1424 | uint32_t max_sync_seq = 0; | |
1425 | bool active_on_peer = false; | |
1426 | bool peer_router = false; | |
1427 | bool proxy_from_peer = false; | |
1428 | ||
1429 | bgp_evpn_get_sync_info(bgp, esi, rn, loc_seq, | |
1430 | &max_sync_seq, &active_on_peer, | |
1431 | &peer_router, &proxy_from_peer); | |
1432 | attr->mm_sync_seqnum = max_sync_seq; | |
1433 | if (active_on_peer) | |
1434 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1435 | else | |
1436 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1437 | if (proxy_from_peer) | |
1438 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1439 | else | |
1440 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1441 | if (peer_router) | |
1442 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1443 | else | |
1444 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1445 | ||
1446 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
1447 | char prefix_buf[PREFIX_STRLEN]; | |
1448 | char esi_buf[ESI_STR_LEN]; | |
1449 | ||
1450 | zlog_debug("setup sync info for %s es %s max_seq %d %s%s%s", | |
1451 | prefix2str(evp, prefix_buf, | |
1452 | sizeof(prefix_buf)), | |
1453 | esi_to_str(esi, esi_buf, | |
1454 | sizeof(esi_buf)), | |
1455 | max_sync_seq, | |
1456 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) ? | |
1457 | "peer-active " : "", | |
1458 | (attr->es_flags & ATTR_ES_PEER_PROXY) ? | |
1459 | "peer-proxy " : "", | |
1460 | (attr->es_flags & ATTR_ES_PEER_ROUTER) ? | |
1461 | "peer-router " : ""); | |
1462 | } | |
1463 | } | |
1464 | } else { | |
1465 | attr->mm_sync_seqnum = 0; | |
1466 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1467 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1468 | } | |
1469 | } | |
1470 | ||
128ea8ab | 1471 | /* |
1472 | * Create or update EVPN route entry. This could be in the VNI route table | |
1473 | * or the global route table. | |
1474 | */ | |
d62a17ae | 1475 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
9c7edc03 AK |
1476 | afi_t afi, safi_t safi, struct bgp_dest *dest, |
1477 | struct attr *attr, int add, | |
1478 | struct bgp_path_info **pi, uint8_t flags, | |
1479 | uint32_t seq, bool setup_sync, | |
1480 | bool *old_is_sync) | |
d62a17ae | 1481 | { |
40381db7 DS |
1482 | struct bgp_path_info *tmp_pi; |
1483 | struct bgp_path_info *local_pi; | |
d62a17ae | 1484 | struct attr *attr_new; |
b57ba6d2 | 1485 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1486 | uint32_t num_labels = 1; |
d62a17ae | 1487 | int route_change = 1; |
d7c0a89a | 1488 | uint8_t sticky = 0; |
b54892e0 | 1489 | const struct prefix_evpn *evp; |
d62a17ae | 1490 | |
40381db7 | 1491 | *pi = NULL; |
9bcb3eef | 1492 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1493 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1494 | |
f07e1c99 | 1495 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1496 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1497 | |
1498 | /* If route doesn't exist already, create a new one, if told to. | |
1499 | * Otherwise act based on whether the attributes of the route have | |
1500 | * changed or not. | |
1501 | */ | |
40381db7 | 1502 | if (!local_pi && !add) |
d62a17ae | 1503 | return 0; |
1504 | ||
9c7edc03 AK |
1505 | if (old_is_sync && local_pi) |
1506 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1507 | ||
1508 | /* if a local path is being added with a non-zero esi look | |
1509 | * for SYNC paths from ES peers and bubble up the sync-info | |
1510 | */ | |
1511 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, setup_sync); | |
1512 | ||
f07e1c99 | 1513 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1514 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1515 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1516 | |
40381db7 | 1517 | if (!local_pi) { |
d62a17ae | 1518 | /* Add (or update) attribute to hash. */ |
1519 | attr_new = bgp_attr_intern(attr); | |
1520 | ||
1521 | /* Extract MAC mobility sequence number, if any. */ | |
1522 | attr_new->mm_seqnum = | |
1523 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1524 | attr_new->sticky = sticky; | |
1525 | ||
1526 | /* Create new route with its attribute. */ | |
40381db7 | 1527 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1528 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1529 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1530 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1531 | |
1532 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1533 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1534 | |
1535 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1536 | * Only attach second label if we are advertising two labels for | |
1537 | * type-2 routes. | |
1538 | */ | |
996c9314 LB |
1539 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1540 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1541 | vni_t l3vni; |
1542 | ||
1543 | l3vni = bgpevpn_get_l3vni(vpn); | |
1544 | if (l3vni) { | |
1545 | vni2label(l3vni, &label[1]); | |
1546 | num_labels++; | |
1547 | } | |
1548 | } | |
d62a17ae | 1549 | |
40381db7 DS |
1550 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1551 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1552 | /* Mark route as self type-2 route */ |
1553 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1554 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1555 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1556 | } else { |
40381db7 DS |
1557 | tmp_pi = local_pi; |
1558 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1559 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1560 | route_change = 0; |
1561 | else { | |
c48d9f5f MK |
1562 | /* |
1563 | * The attributes have changed, type-2 routes needs to | |
1564 | * be advertised with right labels. | |
1565 | */ | |
1566 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1567 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1568 | && CHECK_FLAG(vpn->flags, | |
1569 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1570 | vni_t l3vni; |
1571 | ||
1572 | l3vni = bgpevpn_get_l3vni(vpn); | |
1573 | if (l3vni) { | |
1574 | vni2label(l3vni, &label[1]); | |
1575 | num_labels++; | |
1576 | } | |
1577 | } | |
40381db7 DS |
1578 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1579 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1580 | |
d62a17ae | 1581 | /* The attribute has changed. */ |
1582 | /* Add (or update) attribute to hash. */ | |
1583 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1584 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1585 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1586 | |
f07e1c99 | 1587 | /* Extract MAC mobility sequence number, if any. */ |
1588 | attr_new->mm_seqnum = | |
1589 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1590 | attr_new->sticky = sticky; | |
1591 | ||
d62a17ae | 1592 | /* Restore route, if needed. */ |
40381db7 | 1593 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1594 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1595 | |
1596 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1597 | bgp_attr_unintern(&tmp_pi->attr); |
1598 | tmp_pi->attr = attr_new; | |
1599 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1600 | } |
1601 | } | |
1602 | ||
1603 | /* Return back the route entry. */ | |
40381db7 | 1604 | *pi = tmp_pi; |
d62a17ae | 1605 | return route_change; |
128ea8ab | 1606 | } |
1607 | ||
ec0ab544 | 1608 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1609 | struct bgpevpn *vpn, |
1610 | struct bgp_dest *dest) | |
ec0ab544 AK |
1611 | { |
1612 | struct bgp_path_info *tmp_ri; | |
1613 | struct bgp_path_info *curr_select = NULL; | |
1614 | ||
9bcb3eef DS |
1615 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1616 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1617 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1618 | curr_select = tmp_ri; | |
1619 | break; | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1624 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1625 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1626 | evpn_zebra_install(bgp, vpn, | |
1627 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1628 | curr_select); | |
ec0ab544 AK |
1629 | } |
1630 | ||
6d8c603a AK |
1631 | /* |
1632 | * If the local route was not selected evict it and tell zebra to re-add | |
1633 | * the best remote dest. | |
1634 | * | |
1635 | * Typically a local path added by zebra is expected to be selected as | |
1636 | * best. In which case when a remote path wins as best (later) | |
1637 | * evpn_route_select_install itself evicts the older-local-best path. | |
1638 | * | |
1639 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1640 | * is possible that the local path is no longer the "older" best path. | |
1641 | * It is a path that was never designated as best and hence requires | |
1642 | * additional handling to prevent bgp from injecting and holding on to a | |
1643 | * non-best local path. | |
1644 | */ | |
1645 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1646 | struct bgpevpn *vpn, | |
9bcb3eef | 1647 | struct bgp_dest *dest, |
9a8897aa | 1648 | struct bgp_path_info *local_pi) |
6d8c603a | 1649 | { |
6d8c603a | 1650 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1651 | if (bgp_debug_zebra(NULL)) |
9bcb3eef DS |
1652 | zlog_debug("evicting local evpn prefix %pRN as remote won", |
1653 | dest); | |
b54892e0 | 1654 | |
9c7edc03 | 1655 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1656 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1657 | |
1658 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1659 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1660 | } |
1661 | ||
128ea8ab | 1662 | /* |
1663 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1664 | * and schedule for processing. | |
1665 | */ | |
d62a17ae | 1666 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1667 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1668 | uint32_t seq, esi_t *esi) |
128ea8ab | 1669 | { |
9bcb3eef | 1670 | struct bgp_dest *dest; |
d62a17ae | 1671 | struct attr attr; |
1672 | struct attr *attr_new; | |
1ec31309 | 1673 | int add_l3_ecomm = 0; |
40381db7 | 1674 | struct bgp_path_info *pi; |
d62a17ae | 1675 | afi_t afi = AFI_L2VPN; |
1676 | safi_t safi = SAFI_EVPN; | |
1677 | int route_change; | |
9c7edc03 | 1678 | bool old_is_sync = false; |
128ea8ab | 1679 | |
d62a17ae | 1680 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1681 | |
d62a17ae | 1682 | /* Build path-attribute for this route. */ |
1683 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1684 | attr.nexthop = vpn->originator_ip; | |
1685 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1686 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1687 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1688 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1689 | attr.router_flag = CHECK_FLAG(flags, |
1690 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1691 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1692 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1693 | ||
1694 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1695 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1696 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1697 | } | |
1698 | ||
be41eb68 | 1699 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1700 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1701 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1702 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1703 | } | |
be41eb68 | 1704 | |
9c7edc03 AK |
1705 | if (bgp_debug_zebra(NULL)) { |
1706 | char buf[ETHER_ADDR_STRLEN]; | |
1707 | char buf1[PREFIX_STRLEN]; | |
1708 | char buf3[ESI_STR_LEN]; | |
1709 | ||
1710 | zlog_debug("VRF %s vni %u type-2 route evp %s RMAC %s nexthop %s esi %s", | |
1711 | vpn->bgp_vrf ? | |
1712 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1713 | vpn->vni, | |
1714 | prefix2str(p, buf1, sizeof(buf1)), | |
1715 | prefix_mac2str(&attr.rmac, buf, | |
1716 | sizeof(buf)), | |
1717 | inet_ntoa(attr.mp_nexthop_global_in), | |
1718 | esi_to_str(esi, buf3, sizeof(buf3))); | |
1719 | } | |
1ec31309 | 1720 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1721 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1722 | uint8_t af_flags = 0; | |
1723 | ||
1724 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1725 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1726 | ||
1727 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1728 | } |
1729 | ||
a21bd7a3 | 1730 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1731 | |
1ec31309 | 1732 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1733 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1734 | * these routes. | |
1735 | */ | |
1736 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1737 | (is_evpn_prefix_ipaddr_v4(p) || |
1738 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1739 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1740 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1741 | add_l3_ecomm = 1; |
1742 | ||
1743 | /* Set up extended community. */ | |
1744 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1745 | |
d62a17ae | 1746 | /* First, create (or fetch) route node within the VNI. */ |
1747 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1748 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1749 | |
d62a17ae | 1750 | /* Create or update route entry. */ |
9bcb3eef | 1751 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1752 | 1, &pi, flags, seq, |
1753 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1754 | assert(pi); |
1755 | attr_new = pi->attr; | |
128ea8ab | 1756 | |
6d8c603a AK |
1757 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1758 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1759 | |
1760 | /* Perform route selection. Normally, the local route in the | |
1761 | * VNI is expected to win and be the best route. However, if | |
1762 | * there is a race condition where a host moved from local to | |
1763 | * remote and the remote route was received in BGP just prior | |
1764 | * to the local MACIP notification from zebra, the remote | |
1765 | * route would win, and we should evict the defunct local route | |
1766 | * and (re)install the remote route into zebra. | |
1767 | */ | |
9bcb3eef | 1768 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1769 | /* |
9a8897aa AK |
1770 | * If the new local route was not selected evict it and tell zebra |
1771 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1772 | * routes. | |
6d8c603a | 1773 | */ |
9c7edc03 | 1774 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1775 | route_change = 0; |
9c7edc03 AK |
1776 | } else { |
1777 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1778 | route_change = 0; | |
1779 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1780 | } else { | |
1781 | bool new_is_sync; | |
1782 | ||
1783 | /* If the local path already existed and is still the | |
1784 | * best path we need to also check if it transitioned | |
1785 | * from being a sync path to a non-sync path. If it | |
1786 | * it did we need to notify zebra that the sync-path | |
1787 | * has been removed. | |
1788 | */ | |
1789 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1790 | if (!new_is_sync && old_is_sync) | |
1791 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1792 | } | |
9a8897aa | 1793 | } |
6d8c603a AK |
1794 | bgp_path_info_unlock(pi); |
1795 | ||
9bcb3eef | 1796 | bgp_dest_unlock_node(dest); |
128ea8ab | 1797 | |
d62a17ae | 1798 | /* If this is a new route or some attribute has changed, export the |
1799 | * route to the global table. The route will be advertised to peers | |
1800 | * from there. Note that this table is a 2-level tree (RD-level + | |
1801 | * Prefix-level) similar to L3VPN routes. | |
1802 | */ | |
1803 | if (route_change) { | |
40381db7 | 1804 | struct bgp_path_info *global_pi; |
128ea8ab | 1805 | |
c44ab6f1 AK |
1806 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1807 | (const struct prefix_evpn *)p, | |
1808 | &vpn->prd); | |
9bcb3eef | 1809 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1810 | &global_pi, flags, seq, |
1811 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1812 | |
d62a17ae | 1813 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1814 | bgp_process(bgp, dest, afi, safi); |
1815 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1816 | } |
128ea8ab | 1817 | |
d62a17ae | 1818 | /* Unintern temporary. */ |
1819 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1820 | |
d62a17ae | 1821 | return 0; |
128ea8ab | 1822 | } |
1823 | ||
50f74cf1 | 1824 | /* |
1825 | * Delete EVPN route entry. | |
1826 | * The entry can be in ESI/VNI table or the global table. | |
1827 | */ | |
185fb14a | 1828 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1829 | struct bgp_dest *dest, |
40381db7 | 1830 | struct bgp_path_info **pi) |
342dd0c6 | 1831 | { |
40381db7 | 1832 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1833 | |
40381db7 | 1834 | *pi = NULL; |
342dd0c6 | 1835 | |
50f74cf1 | 1836 | /* Now, find matching route. */ |
9bcb3eef | 1837 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1838 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1839 | if (tmp_pi->peer == bgp->peer_self |
1840 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1841 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1842 | break; |
1843 | ||
40381db7 | 1844 | *pi = tmp_pi; |
342dd0c6 | 1845 | |
1846 | /* Mark route for delete. */ | |
40381db7 | 1847 | if (tmp_pi) |
9bcb3eef | 1848 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1849 | } |
1850 | ||
1851 | /* Delete EVPN type5 route */ | |
996c9314 | 1852 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1853 | { |
1854 | afi_t afi = AFI_L2VPN; | |
1855 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1856 | struct bgp_dest *dest = NULL; |
40381db7 | 1857 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1858 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1859 | |
5e53dce3 T |
1860 | bgp_evpn = bgp_get_evpn(); |
1861 | if (!bgp_evpn) | |
faafdfa8 | 1862 | return 0; |
342dd0c6 | 1863 | |
1864 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1865 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1866 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1867 | if (!dest) |
342dd0c6 | 1868 | return 0; |
1869 | ||
9bcb3eef | 1870 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1871 | if (pi) |
9bcb3eef DS |
1872 | bgp_process(bgp_evpn, dest, afi, safi); |
1873 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1874 | return 0; |
1875 | } | |
1876 | ||
128ea8ab | 1877 | /* |
1878 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1879 | * schedule for processing. | |
1880 | */ | |
d62a17ae | 1881 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1882 | struct prefix_evpn *p) | |
1883 | { | |
9bcb3eef | 1884 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1885 | struct bgp_path_info *pi; |
d62a17ae | 1886 | afi_t afi = AFI_L2VPN; |
1887 | safi_t safi = SAFI_EVPN; | |
1888 | ||
1889 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1890 | * there | |
1891 | * is nothing further to do. | |
1892 | */ | |
1893 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1894 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1895 | if (!dest) | |
d62a17ae | 1896 | return 0; |
1897 | ||
1898 | /* Next, locate route node in the global EVPN routing table. Note that | |
1899 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1900 | * L3VPN routes. | |
1901 | */ | |
c44ab6f1 AK |
1902 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1903 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1904 | if (global_dest) { |
d62a17ae | 1905 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1906 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1907 | |
1908 | /* Schedule for processing - withdraws to peers happen from | |
1909 | * this table. | |
1910 | */ | |
40381db7 | 1911 | if (pi) |
9bcb3eef DS |
1912 | bgp_process(bgp, global_dest, afi, safi); |
1913 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1914 | } |
1915 | ||
1916 | /* Delete route entry in the VNI route table. This can just be removed. | |
1917 | */ | |
9bcb3eef | 1918 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1919 | if (pi) { |
9bcb3eef DS |
1920 | bgp_path_info_reap(dest, pi); |
1921 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1922 | } |
9bcb3eef | 1923 | bgp_dest_unlock_node(dest); |
d62a17ae | 1924 | |
1925 | return 0; | |
128ea8ab | 1926 | } |
1927 | ||
9c7edc03 AK |
1928 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
1929 | struct bgpevpn *vpn, struct bgp_node *rn, | |
1930 | struct bgp_path_info *local_pi, const char *caller) | |
1931 | { | |
1932 | afi_t afi = AFI_L2VPN; | |
1933 | safi_t safi = SAFI_EVPN; | |
1934 | struct bgp_path_info *pi; | |
1935 | struct attr attr; | |
1936 | struct attr *attr_new; | |
1937 | uint32_t seq; | |
1938 | int add_l3_ecomm = 0; | |
1939 | struct bgp_node *global_rn; | |
1940 | struct bgp_path_info *global_pi; | |
1941 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
1942 | int route_change; | |
1943 | bool old_is_sync = false; | |
1944 | ||
1945 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1946 | return; | |
1947 | ||
1948 | /* | |
1949 | * Build attribute per local route as the MAC mobility and | |
1950 | * some other values could differ for different routes. The | |
1951 | * attributes will be shared in the hash table. | |
1952 | */ | |
1953 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1954 | attr.nexthop = vpn->originator_ip; | |
1955 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1956 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1957 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
1958 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
1959 | attr.es_flags = local_pi->attr->es_flags; | |
1960 | if (local_pi->attr->default_gw) { | |
1961 | attr.default_gw = 1; | |
1962 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1963 | attr.router_flag = 1; | |
1964 | } | |
1965 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
1966 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
1967 | local_pi->extra->af_flags); | |
1968 | vni2label(vpn->vni, &(attr.label)); | |
1969 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1970 | * using L3 VNI for type-2 routes also. | |
1971 | */ | |
1972 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
1973 | !IN6_IS_ADDR_LINKLOCAL( | |
1974 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
1975 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && | |
1976 | bgpevpn_get_l3vni(vpn)) | |
1977 | add_l3_ecomm = 1; | |
1978 | ||
1979 | /* Set up extended community. */ | |
1980 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1981 | seq = mac_mobility_seqnum(local_pi->attr); | |
1982 | ||
1983 | if (bgp_debug_zebra(NULL)) { | |
1984 | char buf[ETHER_ADDR_STRLEN]; | |
1985 | char buf1[PREFIX_STRLEN]; | |
1986 | char buf3[ESI_STR_LEN]; | |
1987 | ||
1988 | zlog_debug("VRF %s vni %u evp %s RMAC %s nexthop %s esi %s esf 0x%x from %s", | |
1989 | vpn->bgp_vrf ? | |
1990 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1991 | vpn->vni, | |
1992 | prefix2str(evp, buf1, sizeof(buf1)), | |
1993 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1994 | inet_ntoa(attr.mp_nexthop_global_in), | |
1995 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), | |
1996 | attr.es_flags, caller); | |
1997 | } | |
1998 | ||
1999 | /* Update the route entry. */ | |
2000 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, | |
2001 | rn, &attr, 0, &pi, 0, seq, | |
2002 | true /* setup_sync */, &old_is_sync); | |
2003 | ||
2004 | assert(pi); | |
2005 | attr_new = pi->attr; | |
2006 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2007 | bgp_path_info_lock(pi); | |
2008 | ||
2009 | /* Perform route selection. Normally, the local route in the | |
2010 | * VNI is expected to win and be the best route. However, | |
2011 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2012 | * that causes best selection to be based on next hop), a | |
2013 | * remote route could win. If the local route is the best, | |
2014 | * ensure it is updated in the global EVPN route table and | |
2015 | * advertised to peers; otherwise, ensure it is evicted and | |
2016 | * (re)install the remote route into zebra. | |
2017 | */ | |
2018 | evpn_route_select_install(bgp, vpn, rn); | |
2019 | ||
2020 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2021 | route_change = 0; | |
2022 | } else { | |
2023 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2024 | route_change = 0; | |
2025 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
2026 | } else { | |
2027 | bool new_is_sync; | |
2028 | ||
2029 | /* If the local path already existed and is still the | |
2030 | * best path we need to also check if it transitioned | |
2031 | * from being a sync path to a non-sync path. If it | |
2032 | * it did we need to notify zebra that the sync-path | |
2033 | * has been removed. | |
2034 | */ | |
2035 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2036 | if (!new_is_sync && old_is_sync) | |
2037 | evpn_zebra_uninstall(bgp, vpn, | |
2038 | evp, zero_vtep_ip); | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | ||
2043 | /* unlock pi */ | |
2044 | bgp_path_info_unlock(pi); | |
2045 | ||
2046 | if (route_change) { | |
2047 | /* Update route in global routing table. */ | |
2048 | global_rn = bgp_global_evpn_node_get(bgp->rib[afi][safi], | |
2049 | afi, safi, evp, &vpn->prd); | |
2050 | assert(global_rn); | |
2051 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, | |
2052 | attr_new, 0, &global_pi, 0, | |
2053 | mac_mobility_seqnum(attr_new), | |
2054 | false /* setup_sync */, NULL /* old_is_sync */); | |
2055 | ||
2056 | /* Schedule for processing and unlock node. */ | |
2057 | bgp_process(bgp, global_rn, afi, safi); | |
2058 | bgp_dest_unlock_node(global_rn); | |
2059 | } | |
2060 | ||
2061 | /* Unintern temporary. */ | |
2062 | aspath_unintern(&attr.aspath); | |
2063 | } | |
2064 | ||
128ea8ab | 2065 | /* |
2066 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2067 | * be scheduled for advertise to peers. | |
2068 | */ | |
d62a17ae | 2069 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2070 | { | |
9bcb3eef | 2071 | struct bgp_dest *dest; |
9c7edc03 | 2072 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2073 | |
2074 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2075 | * routes updated, update corresponding entry in the global table too. | |
2076 | */ | |
9bcb3eef | 2077 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2078 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2079 | const struct prefix_evpn *evp = |
2080 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2081 | |
2082 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2083 | continue; | |
2084 | ||
f07e1c99 | 2085 | /* Identify local route. */ |
9bcb3eef | 2086 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2087 | tmp_pi = tmp_pi->next) { |
40381db7 | 2088 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2089 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2090 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2091 | break; |
7ec156a9 | 2092 | } |
d62a17ae | 2093 | |
40381db7 | 2094 | if (!tmp_pi) |
d62a17ae | 2095 | continue; |
2096 | ||
9c7edc03 AK |
2097 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2098 | __func__); | |
f07e1c99 | 2099 | } |
d62a17ae | 2100 | |
2101 | return 0; | |
128ea8ab | 2102 | } |
2103 | ||
2104 | /* | |
2105 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2106 | * global routing table. These are also scheduled for withdraw from peers. | |
2107 | */ | |
d62a17ae | 2108 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2109 | { |
d62a17ae | 2110 | afi_t afi; |
2111 | safi_t safi; | |
9bcb3eef | 2112 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2113 | struct bgp_table *table; |
40381db7 | 2114 | struct bgp_path_info *pi; |
128ea8ab | 2115 | |
d62a17ae | 2116 | afi = AFI_L2VPN; |
2117 | safi = SAFI_EVPN; | |
128ea8ab | 2118 | |
9bcb3eef DS |
2119 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2120 | (struct prefix *)&vpn->prd); | |
2121 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2122 | table = bgp_dest_get_bgp_table_info(rddest); | |
2123 | for (dest = bgp_table_top(table); dest; | |
2124 | dest = bgp_route_next(dest)) { | |
2125 | const struct prefix_evpn *evp = | |
2126 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2127 | dest); | |
128ea8ab | 2128 | |
d62a17ae | 2129 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2130 | continue; | |
128ea8ab | 2131 | |
9bcb3eef | 2132 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2133 | if (pi) |
9bcb3eef | 2134 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2135 | } |
2136 | } | |
128ea8ab | 2137 | |
d62a17ae | 2138 | /* Unlock RD node. */ |
9bcb3eef DS |
2139 | if (rddest) |
2140 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2141 | |
d62a17ae | 2142 | return 0; |
128ea8ab | 2143 | } |
2144 | ||
2145 | /* | |
2146 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2147 | * table as well as the per-VNI route table. | |
2148 | */ | |
d62a17ae | 2149 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2150 | { |
d62a17ae | 2151 | afi_t afi; |
2152 | safi_t safi; | |
9bcb3eef | 2153 | struct bgp_dest *dest; |
40381db7 | 2154 | struct bgp_path_info *pi; |
128ea8ab | 2155 | |
d62a17ae | 2156 | afi = AFI_L2VPN; |
2157 | safi = SAFI_EVPN; | |
128ea8ab | 2158 | |
d62a17ae | 2159 | /* First, walk the global route table for this VNI's type-2 local |
2160 | * routes. | |
2161 | * EVPN routes are a 2-level table, first get the RD table. | |
2162 | */ | |
2163 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2164 | |
d62a17ae | 2165 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2166 | for (dest = bgp_table_top(vpn->route_table); dest; |
2167 | dest = bgp_route_next(dest)) { | |
2168 | const struct prefix_evpn *evp = | |
2169 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2170 | |
d62a17ae | 2171 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2172 | continue; | |
128ea8ab | 2173 | |
9bcb3eef | 2174 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2175 | |
d62a17ae | 2176 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2177 | if (pi) |
9bcb3eef | 2178 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2179 | } |
128ea8ab | 2180 | |
d62a17ae | 2181 | return 0; |
128ea8ab | 2182 | } |
2183 | ||
2184 | /* | |
2185 | * Delete all routes in the per-VNI route table. | |
2186 | */ | |
d62a17ae | 2187 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2188 | { |
9bcb3eef | 2189 | struct bgp_dest *dest; |
40381db7 | 2190 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2191 | |
d62a17ae | 2192 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2193 | for (dest = bgp_table_top(vpn->route_table); dest; |
2194 | dest = bgp_route_next(dest)) { | |
2195 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2196 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2197 | bgp_path_info_delete(dest, pi); |
2198 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2199 | } |
2200 | } | |
128ea8ab | 2201 | |
d62a17ae | 2202 | return 0; |
128ea8ab | 2203 | } |
2204 | ||
833b8a50 AK |
2205 | /* BUM traffic flood mode per-l2-vni */ |
2206 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2207 | struct bgpevpn *vpn) | |
2208 | { | |
2209 | /* if flooding has been globally disabled per-vni mode is | |
2210 | * not relevant | |
2211 | */ | |
2212 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2213 | return VXLAN_FLOOD_DISABLED; | |
2214 | ||
2215 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2216 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2217 | return VXLAN_FLOOD_PIM_SM; | |
2218 | ||
2219 | /* default is ingress replication */ | |
2220 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2221 | } | |
2222 | ||
128ea8ab | 2223 | /* |
2224 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2225 | * export RT getting modified or change to tunnel IP. Note that these | |
2226 | * situations need the route in the per-VNI table as well as the global | |
2227 | * table to be updated (as attributes change). | |
2228 | */ | |
0ca10580 | 2229 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2230 | { |
d62a17ae | 2231 | int ret; |
2232 | struct prefix_evpn p; | |
128ea8ab | 2233 | |
d62a17ae | 2234 | /* Update and advertise the type-3 route (only one) followed by the |
2235 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2236 | * |
2237 | * RT-3 only if doing head-end replication | |
d62a17ae | 2238 | */ |
833b8a50 AK |
2239 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2240 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2241 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2242 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2243 | if (ret) |
2244 | return ret; | |
2245 | } | |
128ea8ab | 2246 | |
d62a17ae | 2247 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2248 | } |
2249 | ||
2250 | /* | |
2251 | * Delete (and withdraw) local routes for specified VNI from the global | |
2252 | * table and per-VNI table. After this, remove all other routes from | |
2253 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2254 | * (advertise-all-vni) being disabled. | |
2255 | */ | |
d62a17ae | 2256 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2257 | { |
d62a17ae | 2258 | int ret; |
2259 | struct prefix_evpn p; | |
128ea8ab | 2260 | |
d62a17ae | 2261 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2262 | * followed by type-3 routes (only one) - for this VNI. | |
2263 | */ | |
2264 | ret = delete_all_type2_routes(bgp, vpn); | |
2265 | if (ret) | |
2266 | return ret; | |
128ea8ab | 2267 | |
d62a17ae | 2268 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2269 | ret = delete_evpn_route(bgp, vpn, &p); | |
2270 | if (ret) | |
2271 | return ret; | |
128ea8ab | 2272 | |
d62a17ae | 2273 | /* Delete all routes from the per-VNI table. */ |
2274 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2275 | } |
2276 | ||
76d07c7a AK |
2277 | /* |
2278 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2279 | * remove the type-3 route if any. A new type-3 route will be generated | |
2280 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2281 | */ | |
2282 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2283 | struct in_addr mcast_grp) | |
2284 | { | |
2285 | struct prefix_evpn p; | |
2286 | ||
2287 | vpn->mcast_grp = mcast_grp; | |
2288 | ||
2289 | if (is_vni_live(vpn)) { | |
2290 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2291 | delete_evpn_route(bgp, vpn, &p); | |
2292 | } | |
2293 | ||
2294 | return 0; | |
2295 | } | |
2296 | ||
128ea8ab | 2297 | /* |
d1911c26 | 2298 | * There is a tunnel endpoint IP address change for this VNI, delete |
2299 | * prior type-3 route (if needed) and update. | |
2300 | * Note: Route re-advertisement happens elsewhere after other processing | |
2301 | * other changes. | |
128ea8ab | 2302 | */ |
d62a17ae | 2303 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2304 | struct in_addr originator_ip) | |
128ea8ab | 2305 | { |
d62a17ae | 2306 | struct prefix_evpn p; |
128ea8ab | 2307 | |
ddd16ed5 MK |
2308 | /* If VNI is not live, we only need to update the originator ip */ |
2309 | if (!is_vni_live(vpn)) { | |
2310 | vpn->originator_ip = originator_ip; | |
2311 | return 0; | |
2312 | } | |
2313 | ||
db0e1937 MK |
2314 | /* Update the tunnel-ip hash */ |
2315 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2316 | bgp_tip_add(bgp, &originator_ip); | |
2317 | ||
2318 | /* filter routes as martian nexthop db has changed */ | |
2319 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2320 | ||
d62a17ae | 2321 | /* Need to withdraw type-3 route as the originator IP is part |
2322 | * of the key. | |
2323 | */ | |
2324 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2325 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2326 | |
d62a17ae | 2327 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2328 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2329 | return 0; |
185fb14a | 2330 | } |
50f74cf1 | 2331 | |
185fb14a AK |
2332 | static struct bgp_path_info * |
2333 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2334 | struct bgp_dest *dest, struct attr *attr) | |
2335 | { | |
2336 | struct attr *attr_new; | |
2337 | struct bgp_path_info *pi; | |
50f74cf1 | 2338 | |
185fb14a AK |
2339 | /* Add (or update) attribute to hash. */ |
2340 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2341 | |
185fb14a AK |
2342 | /* Create new route with its attribute. */ |
2343 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2344 | attr_new, dest); | |
2345 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2346 | bgp_path_info_extra_get(pi); | |
2347 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2348 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2349 | if (parent_pi->extra) { | |
2350 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2351 | sizeof(pi->extra->label)); | |
2352 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2353 | } |
185fb14a | 2354 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2355 | |
185fb14a | 2356 | return pi; |
50f74cf1 | 2357 | } |
2358 | ||
d3135ba3 | 2359 | /* |
2360 | * Install route entry into the VRF routing table and invoke route selection. | |
2361 | */ | |
2362 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2363 | const struct prefix_evpn *evp, |
40381db7 | 2364 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2365 | { |
9bcb3eef | 2366 | struct bgp_dest *dest; |
40381db7 | 2367 | struct bgp_path_info *pi; |
1ec31309 | 2368 | struct attr attr; |
d3135ba3 | 2369 | struct attr *attr_new; |
c4edf708 | 2370 | int ret = 0; |
d3135ba3 | 2371 | struct prefix p; |
2372 | struct prefix *pp = &p; | |
2373 | afi_t afi = 0; | |
2374 | safi_t safi = 0; | |
1eb88002 | 2375 | char buf[PREFIX_STRLEN]; |
5f0c5ec8 | 2376 | bool new_pi = false; |
d3135ba3 | 2377 | |
2378 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2379 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2380 | |
1eb88002 | 2381 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2382 | zlog_debug( |
5f0c5ec8 | 2383 | "vrf %s: import evpn prefix %s parent %p flags 0x%x", |
2384 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2385 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2386 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2387 | } |
2388 | ||
d3135ba3 | 2389 | /* Create (or fetch) route within the VRF. */ |
2390 | /* NOTE: There is no RD here. */ | |
3714a385 | 2391 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2392 | afi = AFI_IP; |
2393 | safi = SAFI_UNICAST; | |
9bcb3eef | 2394 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2395 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2396 | afi = AFI_IP6; |
2397 | safi = SAFI_UNICAST; | |
9bcb3eef | 2398 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2399 | } else |
2400 | return 0; | |
2401 | ||
1ec31309 | 2402 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2403 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2404 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2405 | * address for the rest of the code to flow through. In the case of IPv4, | |
2406 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2407 | */ |
6f4f49b2 | 2408 | attr = *parent_pi->attr; |
1ec31309 | 2409 | if (afi == AFI_IP6) |
2410 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2411 | else |
2412 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2413 | |
d3135ba3 | 2414 | /* Check if route entry is already present. */ |
9bcb3eef | 2415 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2416 | if (pi->extra |
2417 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2418 | break; |
2419 | ||
5f0c5ec8 | 2420 | if (!pi) { |
9bcb3eef | 2421 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2422 | new_pi = true; |
2423 | } else { | |
40381db7 DS |
2424 | if (attrhash_cmp(pi->attr, &attr) |
2425 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2426 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2427 | return 0; |
2428 | } | |
2429 | /* The attribute has changed. */ | |
2430 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2431 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2432 | |
2433 | /* Restore route, if needed. */ | |
40381db7 | 2434 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2435 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2436 | |
2437 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2438 | if ((afi == AFI_IP |
2439 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2440 | || (afi == AFI_IP6 | |
2441 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2442 | &attr_new->mp_nexthop_global))) | |
2443 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2444 | |
9bcb3eef | 2445 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2446 | /* Unintern existing, set to new. */ |
40381db7 DS |
2447 | bgp_attr_unintern(&pi->attr); |
2448 | pi->attr = attr_new; | |
2449 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2450 | } |
d846e917 | 2451 | /* as it is an importation, change nexthop */ |
9bcb3eef | 2452 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); |
d3135ba3 | 2453 | |
9bcb3eef | 2454 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2455 | safi); |
b49cdf4c | 2456 | |
d3135ba3 | 2457 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2458 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2459 | |
7452e879 | 2460 | /* Process for route leaking. */ |
2461 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2462 | ||
9bcb3eef | 2463 | bgp_dest_unlock_node(dest); |
3c11d70a | 2464 | |
5f0c5ec8 | 2465 | if (bgp_debug_zebra(NULL)) |
2466 | zlog_debug( | |
9bcb3eef | 2467 | "... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
5f0c5ec8 | 2468 | new_pi ? "new" : "update", |
9bcb3eef DS |
2469 | dest, bgp_dest_to_rnode(dest)->lock, |
2470 | pi, pi->lock, pi->flags); | |
5f0c5ec8 | 2471 | |
d3135ba3 | 2472 | return ret; |
2473 | } | |
2474 | ||
128ea8ab | 2475 | /* |
2476 | * Install route entry into the VNI routing table and invoke route selection. | |
2477 | */ | |
d62a17ae | 2478 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2479 | const struct prefix_evpn *p, |
40381db7 | 2480 | struct bgp_path_info *parent_pi) |
d62a17ae | 2481 | { |
9bcb3eef | 2482 | struct bgp_dest *dest; |
40381db7 | 2483 | struct bgp_path_info *pi; |
9c7edc03 | 2484 | struct bgp_path_info *local_pi; |
d62a17ae | 2485 | struct attr *attr_new; |
2486 | int ret; | |
c44ab6f1 AK |
2487 | struct prefix_evpn ad_evp; |
2488 | ||
2489 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2490 | * we need to create a different copy for the VNI | |
2491 | */ | |
2492 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2493 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2494 | parent_pi->attr->nexthop); | |
d62a17ae | 2495 | |
2496 | /* Create (or fetch) route within the VNI. */ | |
2497 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2498 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2499 | |
2500 | /* Check if route entry is already present. */ | |
9bcb3eef | 2501 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2502 | if (pi->extra |
2503 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2504 | break; |
2505 | ||
bd0254af MS |
2506 | if (!pi) { |
2507 | /* Create an info */ | |
9bcb3eef | 2508 | (void)bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2509 | parent_pi->attr); |
bd0254af | 2510 | } else { |
40381db7 DS |
2511 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2512 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2513 | bgp_dest_unlock_node(dest); |
d62a17ae | 2514 | return 0; |
2515 | } | |
2516 | /* The attribute has changed. */ | |
2517 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2518 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2519 | |
50f74cf1 | 2520 | /* Restore route, if needed. */ |
40381db7 | 2521 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2522 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2523 | |
2524 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2525 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2526 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2527 | |
2528 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2529 | bgp_attr_unintern(&pi->attr); |
2530 | pi->attr = attr_new; | |
2531 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2532 | } |
2533 | ||
2534 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2535 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2536 | |
9c7edc03 AK |
2537 | /* if the best path is a local path with a non-zero ES |
2538 | * sync info against the local path may need to be updated | |
2539 | * when a remote path is added/updated (including changes | |
2540 | * from sync-path to remote-path) | |
2541 | */ | |
2542 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2543 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2544 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2545 | __func__); | |
2546 | ||
9bcb3eef | 2547 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2548 | |
50f74cf1 | 2549 | return ret; |
2550 | } | |
2551 | ||
d3135ba3 | 2552 | /* |
2553 | * Uninstall route entry from the VRF routing table and send message | |
2554 | * to zebra, if appropriate. | |
2555 | */ | |
2556 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2557 | const struct prefix_evpn *evp, |
40381db7 | 2558 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2559 | { |
9bcb3eef | 2560 | struct bgp_dest *dest; |
40381db7 | 2561 | struct bgp_path_info *pi; |
c4edf708 | 2562 | int ret = 0; |
d3135ba3 | 2563 | struct prefix p; |
2564 | struct prefix *pp = &p; | |
2565 | afi_t afi = 0; | |
2566 | safi_t safi = 0; | |
1eb88002 | 2567 | char buf[PREFIX_STRLEN]; |
d3135ba3 | 2568 | |
2569 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2570 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2571 | |
1eb88002 | 2572 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2573 | zlog_debug( |
5f0c5ec8 | 2574 | "vrf %s: unimport evpn prefix %s parent %p flags 0x%x", |
2575 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2576 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2577 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2578 | } |
2579 | ||
d3135ba3 | 2580 | /* Locate route within the VRF. */ |
2581 | /* NOTE: There is no RD here. */ | |
3714a385 | 2582 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2583 | afi = AFI_IP; |
2584 | safi = SAFI_UNICAST; | |
9bcb3eef | 2585 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2586 | } else { |
2587 | afi = AFI_IP6; | |
2588 | safi = SAFI_UNICAST; | |
9bcb3eef | 2589 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2590 | } |
2591 | ||
9bcb3eef | 2592 | if (!dest) |
d3135ba3 | 2593 | return 0; |
2594 | ||
2595 | /* Find matching route entry. */ | |
9bcb3eef | 2596 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2597 | if (pi->extra |
2598 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2599 | break; |
2600 | ||
40381db7 | 2601 | if (!pi) |
d3135ba3 | 2602 | return 0; |
2603 | ||
5f0c5ec8 | 2604 | if (bgp_debug_zebra(NULL)) |
2605 | zlog_debug( | |
9bcb3eef DS |
2606 | "... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2607 | dest, bgp_dest_to_rnode(dest)->lock, | |
2608 | pi, pi->lock, pi->flags); | |
5f0c5ec8 | 2609 | |
7452e879 | 2610 | /* Process for route leaking. */ |
2611 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2612 | ||
9bcb3eef | 2613 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2614 | safi); |
4c7a11d5 | 2615 | |
d3135ba3 | 2616 | /* Mark entry for deletion */ |
9bcb3eef | 2617 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2618 | |
2619 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2620 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2621 | |
2622 | /* Unlock route node. */ | |
9bcb3eef | 2623 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2624 | |
2625 | return ret; | |
2626 | } | |
2627 | ||
128ea8ab | 2628 | /* |
2629 | * Uninstall route entry from the VNI routing table and send message | |
2630 | * to zebra, if appropriate. | |
2631 | */ | |
d62a17ae | 2632 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2633 | const struct prefix_evpn *p, |
40381db7 | 2634 | struct bgp_path_info *parent_pi) |
128ea8ab | 2635 | { |
9bcb3eef | 2636 | struct bgp_dest *dest; |
40381db7 | 2637 | struct bgp_path_info *pi; |
9c7edc03 | 2638 | struct bgp_path_info *local_pi; |
d62a17ae | 2639 | int ret; |
c44ab6f1 AK |
2640 | struct prefix_evpn ad_evp; |
2641 | ||
2642 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2643 | * we need to create a different copy for the VNI | |
2644 | */ | |
2645 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2646 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2647 | parent_pi->attr->nexthop); | |
128ea8ab | 2648 | |
d62a17ae | 2649 | /* Locate route within the VNI. */ |
2650 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2651 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2652 | if (!dest) | |
d62a17ae | 2653 | return 0; |
128ea8ab | 2654 | |
d62a17ae | 2655 | /* Find matching route entry. */ |
9bcb3eef | 2656 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2657 | if (pi->extra |
2658 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2659 | break; |
128ea8ab | 2660 | |
40381db7 | 2661 | if (!pi) |
d62a17ae | 2662 | return 0; |
128ea8ab | 2663 | |
d62a17ae | 2664 | /* Mark entry for deletion */ |
9bcb3eef | 2665 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2666 | |
d62a17ae | 2667 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2668 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2669 | |
9c7edc03 AK |
2670 | /* if the best path is a local path with a non-zero ES |
2671 | * sync info against the local path may need to be updated | |
2672 | * when a remote path is deleted | |
2673 | */ | |
2674 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2675 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2676 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2677 | __func__); | |
2678 | ||
d62a17ae | 2679 | /* Unlock route node. */ |
9bcb3eef | 2680 | bgp_dest_unlock_node(dest); |
128ea8ab | 2681 | |
d62a17ae | 2682 | return ret; |
128ea8ab | 2683 | } |
2684 | ||
5ba238b7 MK |
2685 | /* |
2686 | * Given a route entry and a VRF, see if this route entry should be | |
2687 | * imported into the VRF i.e., RTs match. | |
2688 | */ | |
4b7e6066 | 2689 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2690 | struct bgp_path_info *pi) |
5ba238b7 | 2691 | { |
40381db7 | 2692 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2693 | struct ecommunity *ecom; |
2694 | int i; | |
2695 | ||
2696 | assert(attr); | |
2697 | /* Route should have valid RT to be even considered. */ | |
2698 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2699 | return 0; | |
2700 | ||
2701 | ecom = attr->ecommunity; | |
2702 | if (!ecom || !ecom->size) | |
2703 | return 0; | |
2704 | ||
2705 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2706 | * matches, we're done. | |
2707 | */ | |
2708 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2709 | uint8_t *pnt; |
2710 | uint8_t type, sub_type; | |
5ba238b7 MK |
2711 | struct ecommunity_val *eval; |
2712 | struct ecommunity_val eval_tmp; | |
2713 | struct vrf_irt_node *irt; | |
2714 | ||
2715 | /* Only deal with RTs */ | |
2716 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2717 | eval = (struct ecommunity_val *)(ecom->val | |
2718 | + (i * ECOMMUNITY_SIZE)); | |
2719 | type = *pnt++; | |
2720 | sub_type = *pnt++; | |
2721 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2722 | continue; | |
2723 | ||
2724 | /* See if this RT matches specified VNIs import RTs */ | |
2725 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2726 | if (irt) |
5ba238b7 MK |
2727 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2728 | return 1; | |
2729 | ||
2730 | /* Also check for non-exact match. In this, we mask out the AS | |
2731 | * and | |
2732 | * only check on the local-admin sub-field. This is to | |
2733 | * facilitate using | |
2734 | * VNI as the RT for EBGP peering too. | |
2735 | */ | |
2736 | irt = NULL; | |
2737 | if (type == ECOMMUNITY_ENCODE_AS | |
2738 | || type == ECOMMUNITY_ENCODE_AS4 | |
2739 | || type == ECOMMUNITY_ENCODE_IP) { | |
2740 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2741 | mask_ecom_global_admin(&eval_tmp, eval); | |
2742 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2743 | } | |
5d9cbca2 | 2744 | if (irt) |
5ba238b7 MK |
2745 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2746 | return 1; | |
2747 | } | |
2748 | ||
2749 | return 0; | |
2750 | } | |
2751 | ||
128ea8ab | 2752 | /* |
2753 | * Given a route entry and a VNI, see if this route entry should be | |
2754 | * imported into the VNI i.e., RTs match. | |
2755 | */ | |
d62a17ae | 2756 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2757 | struct bgp_path_info *pi) |
d62a17ae | 2758 | { |
40381db7 | 2759 | struct attr *attr = pi->attr; |
d62a17ae | 2760 | struct ecommunity *ecom; |
2761 | int i; | |
2762 | ||
2763 | assert(attr); | |
2764 | /* Route should have valid RT to be even considered. */ | |
2765 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2766 | return 0; | |
2767 | ||
2768 | ecom = attr->ecommunity; | |
2769 | if (!ecom || !ecom->size) | |
2770 | return 0; | |
2771 | ||
2772 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2773 | * matches, we're done. | |
2774 | */ | |
2775 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2776 | uint8_t *pnt; |
2777 | uint8_t type, sub_type; | |
d62a17ae | 2778 | struct ecommunity_val *eval; |
2779 | struct ecommunity_val eval_tmp; | |
2780 | struct irt_node *irt; | |
2781 | ||
2782 | /* Only deal with RTs */ | |
2783 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2784 | eval = (struct ecommunity_val *)(ecom->val | |
2785 | + (i * ECOMMUNITY_SIZE)); | |
2786 | type = *pnt++; | |
2787 | sub_type = *pnt++; | |
2788 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2789 | continue; | |
2790 | ||
2791 | /* See if this RT matches specified VNIs import RTs */ | |
2792 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2793 | if (irt) |
d62a17ae | 2794 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2795 | return 1; | |
2796 | ||
2797 | /* Also check for non-exact match. In this, we mask out the AS | |
2798 | * and | |
2799 | * only check on the local-admin sub-field. This is to | |
2800 | * facilitate using | |
2801 | * VNI as the RT for EBGP peering too. | |
2802 | */ | |
2803 | irt = NULL; | |
2804 | if (type == ECOMMUNITY_ENCODE_AS | |
2805 | || type == ECOMMUNITY_ENCODE_AS4 | |
2806 | || type == ECOMMUNITY_ENCODE_IP) { | |
2807 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2808 | mask_ecom_global_admin(&eval_tmp, eval); | |
2809 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2810 | } | |
b1ab0dfe | 2811 | if (irt) |
d62a17ae | 2812 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2813 | return 1; | |
2814 | } | |
2815 | ||
2816 | return 0; | |
128ea8ab | 2817 | } |
2818 | ||
47bf0432 CS |
2819 | /* This API will scan evpn routes for checking attribute's rmac |
2820 | * macthes with bgp instance router mac. It avoid installing | |
2821 | * route into bgp vrf table and remote rmac in bridge table. | |
2822 | */ | |
2823 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2824 | const struct prefix_evpn *evp, |
47bf0432 CS |
2825 | struct bgp_path_info *pi) |
2826 | { | |
2827 | /* evpn route could have learnt prior to L3vni has come up, | |
2828 | * perform rmac check before installing route and | |
2829 | * remote router mac. | |
2830 | * The route will be removed from global bgp table once | |
2831 | * SVI comes up with MAC and stored in hash, triggers | |
2832 | * bgp_mac_rescan_all_evpn_tables. | |
2833 | */ | |
05864da7 | 2834 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
2835 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
2836 | char buf1[PREFIX_STRLEN]; | |
2837 | char attr_str[BUFSIZ] = {0}; | |
2838 | ||
5022c833 | 2839 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 CS |
2840 | |
2841 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
2842 | __func__, bgp_vrf->vrf_id, | |
2843 | prefix2str(evp, buf1, sizeof(buf1)), | |
2844 | attr_str); | |
2845 | } | |
2846 | ||
2847 | return 1; | |
2848 | } | |
2849 | ||
2850 | return 0; | |
2851 | } | |
2852 | ||
5ba238b7 MK |
2853 | /* |
2854 | * Install or uninstall mac-ip routes are appropriate for this | |
2855 | * particular VRF. | |
2856 | */ | |
996c9314 | 2857 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2858 | { |
2859 | afi_t afi; | |
2860 | safi_t safi; | |
9bcb3eef | 2861 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 2862 | struct bgp_table *table; |
40381db7 | 2863 | struct bgp_path_info *pi; |
5ba238b7 MK |
2864 | int ret; |
2865 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 2866 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
2867 | |
2868 | afi = AFI_L2VPN; | |
2869 | safi = SAFI_EVPN; | |
5e53dce3 T |
2870 | bgp_evpn = bgp_get_evpn(); |
2871 | if (!bgp_evpn) | |
5ba238b7 MK |
2872 | return -1; |
2873 | ||
2874 | /* Walk entire global routing table and evaluate routes which could be | |
2875 | * imported into this VRF. Note that we need to loop through all global | |
2876 | * routes to determine which route matches the import rt on vrf | |
2877 | */ | |
9bcb3eef DS |
2878 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
2879 | rd_dest = bgp_route_next(rd_dest)) { | |
2880 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
2881 | if (!table) |
2882 | continue; | |
2883 | ||
9bcb3eef DS |
2884 | for (dest = bgp_table_top(table); dest; |
2885 | dest = bgp_route_next(dest)) { | |
2886 | const struct prefix_evpn *evp = | |
2887 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2888 | dest); | |
5ba238b7 | 2889 | |
1eb88002 | 2890 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2891 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2892 | || evp->prefix.route_type | |
2893 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2894 | continue; |
2895 | ||
1eb88002 | 2896 | /* if not a mac+ip route skip this route */ |
3714a385 | 2897 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2898 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2899 | continue; |
2900 | ||
9bcb3eef | 2901 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 2902 | pi = pi->next) { |
5ba238b7 | 2903 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2904 | * this VRF. |
2905 | */ | |
40381db7 DS |
2906 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2907 | && pi->type == ZEBRA_ROUTE_BGP | |
2908 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2909 | continue; |
2910 | ||
40381db7 | 2911 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
2912 | if (bgp_evpn_route_rmac_self_check( |
2913 | bgp_vrf, evp, pi)) | |
2914 | continue; | |
2915 | ||
5ba238b7 | 2916 | if (install) |
996c9314 | 2917 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 2918 | bgp_vrf, evp, pi); |
5ba238b7 | 2919 | else |
996c9314 | 2920 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 2921 | bgp_vrf, evp, pi); |
5ba238b7 MK |
2922 | |
2923 | if (ret) { | |
af4c2728 | 2924 | flog_err( |
e50f7cfd | 2925 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
2926 | "Failed to %s EVPN %s route in VRF %s", |
2927 | install ? "install" | |
2928 | : "uninstall", | |
2929 | prefix2str(evp, buf, | |
2930 | sizeof(buf)), | |
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 | { | |
3099 | char buf[PREFIX2STR_BUFFER]; | |
3100 | struct bgp *bgp_vrf; | |
3101 | struct listnode *node, *nnode; | |
3102 | ||
90264d64 | 3103 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3104 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3105 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3106 | return 0; |
3107 | ||
90264d64 | 3108 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3109 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3110 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3111 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3112 | return 0; |
3113 | ||
d3135ba3 | 3114 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3115 | int ret; | |
3116 | ||
3117 | if (install) | |
40381db7 | 3118 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3119 | else |
996c9314 | 3120 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3121 | pi); |
d3135ba3 | 3122 | |
3123 | if (ret) { | |
e50f7cfd | 3124 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3125 | "%u: Failed to %s prefix %s in VRF %s", |
3126 | bgp_def->vrf_id, | |
3127 | install ? "install" : "uninstall", | |
3128 | prefix2str(evp, buf, sizeof(buf)), | |
3129 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3130 | return ret; |
3131 | } | |
3132 | } | |
3133 | ||
3134 | return 0; | |
3135 | } | |
3136 | ||
128ea8ab | 3137 | /* |
3138 | * Install or uninstall route in matching VNIs (list). | |
3139 | */ | |
d62a17ae | 3140 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3141 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3142 | struct bgp_path_info *pi, |
d62a17ae | 3143 | struct list *vnis, int install) |
128ea8ab | 3144 | { |
d62a17ae | 3145 | struct bgpevpn *vpn; |
3146 | struct listnode *node, *nnode; | |
128ea8ab | 3147 | |
d62a17ae | 3148 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3149 | int ret; | |
128ea8ab | 3150 | |
d62a17ae | 3151 | if (!is_vni_live(vpn)) |
3152 | continue; | |
128ea8ab | 3153 | |
d62a17ae | 3154 | if (install) |
40381db7 | 3155 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3156 | else |
40381db7 | 3157 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3158 | |
d62a17ae | 3159 | if (ret) { |
1c50c1c0 QY |
3160 | flog_err(EC_BGP_EVPN_FAIL, |
3161 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3162 | bgp->vrf_id, install ? "install" : "uninstall", | |
3163 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3164 | ? "MACIP" | |
3165 | : "IMET", | |
3166 | vpn->vni); | |
d62a17ae | 3167 | return ret; |
3168 | } | |
3169 | } | |
128ea8ab | 3170 | |
d62a17ae | 3171 | return 0; |
128ea8ab | 3172 | } |
3173 | ||
3174 | /* | |
50f74cf1 | 3175 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3176 | */ |
d62a17ae | 3177 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 3178 | const struct prefix *p, |
40381db7 | 3179 | struct bgp_path_info *pi, int import) |
d62a17ae | 3180 | { |
3181 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3182 | struct attr *attr = pi->attr; |
d62a17ae | 3183 | struct ecommunity *ecom; |
3184 | int i; | |
c44ab6f1 | 3185 | struct prefix_evpn ad_evp; |
d62a17ae | 3186 | |
3187 | assert(attr); | |
3188 | ||
50f74cf1 | 3189 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3190 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3191 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3192 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3193 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3194 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3195 | return 0; |
3196 | ||
3197 | /* If we don't have Route Target, nothing much to do. */ | |
3198 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3199 | return 0; | |
3200 | ||
c44ab6f1 AK |
3201 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3202 | * we need to create a different copy for the VNI | |
3203 | */ | |
3204 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3205 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3206 | ||
d62a17ae | 3207 | ecom = attr->ecommunity; |
3208 | if (!ecom || !ecom->size) | |
3209 | return -1; | |
3210 | ||
50f74cf1 | 3211 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3212 | * attached to the route */ | |
d62a17ae | 3213 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3214 | uint8_t *pnt; |
3215 | uint8_t type, sub_type; | |
d62a17ae | 3216 | struct ecommunity_val *eval; |
3217 | struct ecommunity_val eval_tmp; | |
996c9314 | 3218 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3219 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3220 | struct bgp_evpn_es *es; |
d62a17ae | 3221 | |
3222 | /* Only deal with RTs */ | |
3223 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3224 | eval = (struct ecommunity_val *)(ecom->val | |
3225 | + (i * ECOMMUNITY_SIZE)); | |
3226 | type = *pnt++; | |
3227 | sub_type = *pnt++; | |
3228 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3229 | continue; | |
3230 | ||
50f74cf1 | 3231 | /* |
3232 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3233 | * IMET route is imported into VNI table. | |
3234 | * prefix routes are imported into VRF table. | |
523cafc4 | 3235 | */ |
50f74cf1 | 3236 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3237 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3238 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3239 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3240 | |
50f74cf1 | 3241 | irt = lookup_import_rt(bgp, eval); |
3242 | if (irt) | |
40381db7 DS |
3243 | install_uninstall_route_in_vnis( |
3244 | bgp, afi, safi, evp, pi, irt->vnis, | |
3245 | import); | |
50f74cf1 | 3246 | |
3247 | vrf_irt = lookup_vrf_import_rt(eval); | |
3248 | if (vrf_irt) | |
40381db7 DS |
3249 | install_uninstall_route_in_vrfs( |
3250 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3251 | import); | |
50f74cf1 | 3252 | |
3253 | /* Also check for non-exact match. | |
3254 | * In this, we mask out the AS and | |
3255 | * only check on the local-admin sub-field. | |
3256 | * This is to facilitate using | |
3257 | * VNI as the RT for EBGP peering too. | |
3258 | */ | |
3259 | irt = NULL; | |
3260 | vrf_irt = NULL; | |
3261 | if (type == ECOMMUNITY_ENCODE_AS | |
3262 | || type == ECOMMUNITY_ENCODE_AS4 | |
3263 | || type == ECOMMUNITY_ENCODE_IP) { | |
3264 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3265 | mask_ecom_global_admin(&eval_tmp, eval); | |
3266 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3267 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3268 | } | |
3269 | ||
3270 | if (irt) | |
40381db7 DS |
3271 | install_uninstall_route_in_vnis( |
3272 | bgp, afi, safi, evp, pi, irt->vnis, | |
3273 | import); | |
50f74cf1 | 3274 | if (vrf_irt) |
40381db7 DS |
3275 | install_uninstall_route_in_vrfs( |
3276 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3277 | import); | |
50f74cf1 | 3278 | } |
3279 | ||
3280 | /* es route is imported into the es table */ | |
3281 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3282 | ||
3283 | /* we will match based on the entire esi to avoid | |
3284 | * imoort of an es route for esi2 into esi1 | |
3285 | */ | |
c44ab6f1 | 3286 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3287 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3288 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3289 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3290 | } |
d62a17ae | 3291 | } |
3292 | ||
3293 | return 0; | |
128ea8ab | 3294 | } |
3295 | ||
2bb9eff4 DS |
3296 | /* |
3297 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3298 | * routes | |
3299 | */ | |
80b140af MK |
3300 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3301 | { | |
5fd9c12b KA |
3302 | /* Delete ipv4 default route and withdraw from peers */ |
3303 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3304 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3305 | SAFI_UNICAST, false); | |
3306 | ||
80b140af | 3307 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3308 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3309 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3310 | |
5fd9c12b KA |
3311 | /* Delete ipv6 default route and withdraw from peers */ |
3312 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3313 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3314 | SAFI_UNICAST, false); | |
3315 | ||
80b140af | 3316 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3317 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3318 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3319 | } |
3320 | ||
2bb9eff4 DS |
3321 | /* |
3322 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3323 | * routes | |
3324 | */ | |
5394a276 | 3325 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3326 | { |
5394a276 CS |
3327 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3328 | ||
3329 | bgp_evpn = bgp_get_evpn(); | |
3330 | if (!bgp_evpn) | |
3331 | return; | |
3332 | ||
80b140af | 3333 | /* update all ipv4 routes */ |
fdf19f06 MK |
3334 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3335 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3336 | |
5fd9c12b KA |
3337 | /* update ipv4 default route and withdraw from peers */ |
3338 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3339 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3340 | SAFI_UNICAST, true); | |
3341 | ||
80b140af | 3342 | /* update all ipv6 routes */ |
fdf19f06 MK |
3343 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3344 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3345 | |
3346 | /* update ipv6 default route and withdraw from peers */ | |
3347 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3348 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3349 | SAFI_UNICAST, true); | |
3350 | ||
80b140af MK |
3351 | } |
3352 | ||
676f83b9 | 3353 | /* |
3354 | * update and advertise local routes for a VRF as type-5 routes. | |
3355 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3356 | * done in the global route table using the routes which already exist in the | |
3357 | * VRF routing table | |
3358 | */ | |
80b140af | 3359 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3360 | { |
80b140af MK |
3361 | /* skip if the RD is configured */ |
3362 | if (is_vrf_rd_configured(bgp_vrf)) | |
3363 | return; | |
3364 | ||
3365 | /* derive the RD for the VRF based on new router-id */ | |
3366 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3367 | ||
3368 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3369 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3370 | } |
3371 | ||
3372 | /* | |
3373 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3374 | * This is invoked upon VRF RD change. The processing is done only from global | |
3375 | * table. | |
3376 | */ | |
80b140af | 3377 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3378 | { |
80b140af MK |
3379 | /* skip if the RD is configured */ |
3380 | if (is_vrf_rd_configured(bgp_vrf)) | |
3381 | return; | |
3382 | ||
3383 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3384 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3385 | } |
3386 | ||
90e60aa7 | 3387 | /* |
3388 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3389 | * change. Note that the processing is done only on the global route table | |
3390 | * using routes that already exist in the per-VNI table. | |
3391 | */ | |
d62a17ae | 3392 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3393 | { | |
3394 | struct prefix_evpn p; | |
9bcb3eef | 3395 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3396 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3397 | struct attr *attr; |
3398 | afi_t afi = AFI_L2VPN; | |
3399 | safi_t safi = SAFI_EVPN; | |
3400 | ||
3401 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3402 | * attributes to create and advertise the type-3 route for this VNI | |
3403 | * in the global table. | |
fd069644 DS |
3404 | * |
3405 | * RT-3 only if doing head-end replication | |
d62a17ae | 3406 | */ |
833b8a50 AK |
3407 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3408 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3409 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3410 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3411 | if (!dest) /* unexpected */ | |
fd069644 | 3412 | return 0; |
9bcb3eef | 3413 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3414 | if (pi->peer == bgp->peer_self && |
3415 | pi->type == ZEBRA_ROUTE_BGP | |
3416 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3417 | break; | |
3418 | if (!pi) /* unexpected */ | |
3419 | return 0; | |
3420 | attr = pi->attr; | |
d62a17ae | 3421 | |
9c7edc03 AK |
3422 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3423 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3424 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3425 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3426 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3427 | |
fd069644 | 3428 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3429 | bgp_process(bgp, global_dest, afi, safi); |
3430 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3431 | } |
d62a17ae | 3432 | |
3433 | /* Now, walk this VNI's route table and use the route and its attribute | |
3434 | * to create and schedule route in global table. | |
3435 | */ | |
9bcb3eef DS |
3436 | for (dest = bgp_table_top(vpn->route_table); dest; |
3437 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3438 | const struct prefix_evpn *evp = |
9bcb3eef | 3439 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3440 | |
3441 | /* Identify MAC-IP local routes. */ | |
3442 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3443 | continue; | |
3444 | ||
9bcb3eef | 3445 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3446 | if (pi->peer == bgp->peer_self |
3447 | && pi->type == ZEBRA_ROUTE_BGP | |
3448 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3449 | break; |
40381db7 | 3450 | if (!pi) |
d62a17ae | 3451 | continue; |
3452 | ||
3453 | /* Create route in global routing table using this route entry's | |
3454 | * attribute. | |
3455 | */ | |
40381db7 | 3456 | attr = pi->attr; |
c44ab6f1 | 3457 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3458 | evp, &vpn->prd); |
9bcb3eef | 3459 | assert(global_dest); |
9c7edc03 AK |
3460 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, 1, |
3461 | &global_pi, 0, | |
3462 | mac_mobility_seqnum(attr), | |
3463 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3464 | |
3465 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3466 | bgp_process(bgp, global_dest, afi, safi); |
3467 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3468 | } |
3469 | ||
3470 | return 0; | |
90e60aa7 | 3471 | } |
3472 | ||
3473 | /* | |
3474 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3475 | * table. Invoked upon router-id change. | |
3476 | */ | |
d62a17ae | 3477 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3478 | { |
d62a17ae | 3479 | int ret; |
3480 | struct prefix_evpn p; | |
9bcb3eef | 3481 | struct bgp_dest *global_dest; |
40381db7 | 3482 | struct bgp_path_info *pi; |
d62a17ae | 3483 | afi_t afi = AFI_L2VPN; |
3484 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3485 | |
d62a17ae | 3486 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3487 | * for this VNI - from the global table. | |
3488 | */ | |
3489 | ret = delete_global_type2_routes(bgp, vpn); | |
3490 | if (ret) | |
3491 | return ret; | |
90e60aa7 | 3492 | |
d62a17ae | 3493 | /* Remove type-3 route for this VNI from global table. */ |
3494 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3495 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3496 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3497 | if (global_dest) { |
d62a17ae | 3498 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3499 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3500 | |
d62a17ae | 3501 | /* Schedule for processing - withdraws to peers happen from |
3502 | * this table. | |
3503 | */ | |
40381db7 | 3504 | if (pi) |
9bcb3eef DS |
3505 | bgp_process(bgp, global_dest, afi, safi); |
3506 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3507 | } |
90e60aa7 | 3508 | |
d62a17ae | 3509 | return 0; |
90e60aa7 | 3510 | } |
3511 | ||
2d48ee25 | 3512 | /* |
3513 | * Handle router-id change. Update and advertise local routes corresponding | |
3514 | * to this VNI from peers. Note that this is invoked after updating the | |
3515 | * router-id. The routes in the per-VNI table are used to create routes in | |
3516 | * the global table and schedule them. | |
3517 | */ | |
e3b78da8 | 3518 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3519 | { |
e3b78da8 | 3520 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3521 | |
d62a17ae | 3522 | /* Skip VNIs with configured RD. */ |
3523 | if (is_rd_configured(vpn)) | |
3524 | return; | |
2d48ee25 | 3525 | |
d62a17ae | 3526 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3527 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3528 | } |
3529 | ||
3530 | /* | |
3531 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3532 | * to this VNI from peers. Note that this is invoked prior to updating | |
3533 | * the router-id and is done only on the global route table, the routes | |
3534 | * are needed in the per-VNI table to re-advertise with new router id. | |
3535 | */ | |
e3b78da8 | 3536 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3537 | { |
e3b78da8 | 3538 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3539 | |
d62a17ae | 3540 | /* Skip VNIs with configured RD. */ |
3541 | if (is_rd_configured(vpn)) | |
3542 | return; | |
2d48ee25 | 3543 | |
d62a17ae | 3544 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3545 | } |
3546 | ||
fd069644 DS |
3547 | /* |
3548 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3549 | * This is invoked upon flooding mode changing to head-end replication. | |
3550 | */ | |
e3b78da8 | 3551 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3552 | { |
e3b78da8 | 3553 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3554 | struct bgp *bgp = data; |
3555 | struct prefix_evpn p; | |
3556 | ||
833b8a50 AK |
3557 | if (!vpn || !is_vni_live(vpn) || |
3558 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3559 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3560 | return; |
3561 | ||
3562 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3563 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3564 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3565 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3566 | } | |
3567 | ||
3568 | /* | |
3569 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3570 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3571 | */ | |
e3b78da8 | 3572 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3573 | { |
e3b78da8 | 3574 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3575 | struct bgp *bgp = data; |
3576 | struct prefix_evpn p; | |
3577 | ||
3578 | if (!vpn || !is_vni_live(vpn)) | |
3579 | return; | |
3580 | ||
3581 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3582 | delete_evpn_route(bgp, vpn, &p); | |
3583 | } | |
3584 | ||
128ea8ab | 3585 | /* |
3586 | * Process received EVPN type-2 route (advertise or withdraw). | |
3587 | */ | |
d62a17ae | 3588 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3589 | struct attr *attr, uint8_t *pfx, int psize, |
3590 | uint32_t addpath_id) | |
d62a17ae | 3591 | { |
3592 | struct prefix_rd prd; | |
e121d831 QY |
3593 | struct prefix_evpn p = {}; |
3594 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3595 | uint8_t ipaddr_len; |
3596 | uint8_t macaddr_len; | |
e121d831 QY |
3597 | /* holds the VNI(s) as in packet */ |
3598 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3599 | uint32_t num_labels = 0; |
554cd77a | 3600 | uint32_t eth_tag; |
d62a17ae | 3601 | int ret; |
3602 | ||
3603 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3604 | * additional 3 bytes if there is a second label (VNI): | |
3605 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3606 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3607 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3608 | */ | |
3609 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3610 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3611 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3612 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3613 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3614 | return -1; |
3615 | } | |
3616 | ||
e121d831 QY |
3617 | struct stream *pkt = stream_new(psize); |
3618 | stream_put(pkt, pfx, psize); | |
554cd77a | 3619 | |
d62a17ae | 3620 | /* Make prefix_rd */ |
3621 | prd.family = AF_UNSPEC; | |
3622 | prd.prefixlen = 64; | |
e121d831 QY |
3623 | |
3624 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3625 | |
3626 | /* Make EVPN prefix. */ | |
b03b8898 | 3627 | p.family = AF_EVPN; |
50f74cf1 | 3628 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3629 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3630 | ||
554cd77a | 3631 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3632 | if (attr) { |
e121d831 QY |
3633 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3634 | ||
9c7edc03 AK |
3635 | if (bgp_evpn_is_esi_local(&attr->esi)) |
3636 | attr->es_flags |= ATTR_ES_IS_LOCAL; | |
3637 | else | |
3638 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3639 | } else { |
3640 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3641 | } |
d62a17ae | 3642 | |
554cd77a | 3643 | /* Copy Ethernet Tag */ |
e121d831 | 3644 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3645 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3646 | |
3647 | /* Get the MAC Addr len */ | |
e121d831 | 3648 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3649 | |
3650 | /* Get the MAC Addr */ | |
28328ea9 | 3651 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3652 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3653 | } else { |
af4c2728 | 3654 | flog_err( |
e50f7cfd | 3655 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3656 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3657 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3658 | goto fail; |
d62a17ae | 3659 | } |
3660 | ||
3661 | ||
3662 | /* Get the IP. */ | |
e121d831 QY |
3663 | STREAM_GETC(pkt, ipaddr_len); |
3664 | ||
d62a17ae | 3665 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3666 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3667 | flog_err( |
e50f7cfd | 3668 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3669 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3670 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3671 | goto fail; |
d62a17ae | 3672 | } |
3673 | ||
3674 | if (ipaddr_len) { | |
3675 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3676 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3677 | ? IPADDR_V4 |
3678 | : IPADDR_V6; | |
e121d831 | 3679 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3680 | } |
d62a17ae | 3681 | |
b57ba6d2 | 3682 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3683 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3684 | num_labels++; |
e121d831 | 3685 | |
b57ba6d2 | 3686 | /* Do we have a second VNI? */ |
e121d831 | 3687 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3688 | num_labels++; |
e121d831 | 3689 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3690 | } |
d62a17ae | 3691 | |
3692 | /* Process the route. */ | |
3693 | if (attr) | |
3694 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3695 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3696 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3697 | else |
3698 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3699 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3700 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3701 | goto done; |
3702 | ||
3703 | fail: | |
3704 | stream_failure: | |
3705 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3706 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3707 | peer->bgp->vrf_id, peer->host); | |
3708 | ret = -1; | |
3709 | done: | |
3710 | stream_free(pkt); | |
d62a17ae | 3711 | return ret; |
128ea8ab | 3712 | } |
3713 | ||
3714 | /* | |
3715 | * Process received EVPN type-3 route (advertise or withdraw). | |
3716 | */ | |
d62a17ae | 3717 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3718 | struct attr *attr, uint8_t *pfx, int psize, |
3719 | uint32_t addpath_id) | |
d62a17ae | 3720 | { |
3721 | struct prefix_rd prd; | |
3722 | struct prefix_evpn p; | |
d7c0a89a | 3723 | uint8_t ipaddr_len; |
554cd77a | 3724 | uint32_t eth_tag; |
d62a17ae | 3725 | int ret; |
3726 | ||
3727 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3728 | * IP len (1) and IP (4 or 16). | |
3729 | */ | |
3730 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3731 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3732 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3733 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3734 | return -1; |
3735 | } | |
3736 | ||
7fd077aa | 3737 | /* If PMSI is present, log if it is anything other than IR. |
3738 | * Note: We just simply ignore the values as it is not clear if | |
3739 | * doing anything else is better. | |
3740 | */ | |
3741 | if (attr && | |
3742 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
3743 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
3744 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3745 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
3746 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3747 | peer->bgp->vrf_id, peer->host, | |
3748 | attr->pmsi_tnl_type); | |
7fd077aa | 3749 | } |
3750 | } | |
3751 | ||
d62a17ae | 3752 | /* Make prefix_rd */ |
3753 | prd.family = AF_UNSPEC; | |
3754 | prd.prefixlen = 64; | |
3755 | memcpy(&prd.val, pfx, 8); | |
3756 | pfx += 8; | |
3757 | ||
3758 | /* Make EVPN prefix. */ | |
3759 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3760 | p.family = AF_EVPN; |
50f74cf1 | 3761 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3762 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3763 | ||
554cd77a VB |
3764 | /* Copy Ethernet Tag */ |
3765 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3766 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3767 | pfx += 4; |
3768 | ||
3769 | /* Get the IP. */ | |
3770 | ipaddr_len = *pfx++; | |
3771 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3772 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3773 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3774 | } else { |
af4c2728 | 3775 | flog_err( |
e50f7cfd | 3776 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3777 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3778 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3779 | return -1; | |
3780 | } | |
3781 | ||
3782 | /* Process the route. */ | |
3783 | if (attr) | |
3784 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3785 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3786 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3787 | else |
3788 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3789 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3790 | &prd, NULL, 0, NULL); |
d62a17ae | 3791 | return ret; |
128ea8ab | 3792 | } |
3793 | ||
3794 | /* | |
3795 | * Process received EVPN type-5 route (advertise or withdraw). | |
3796 | */ | |
d62a17ae | 3797 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 3798 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 3799 | uint32_t addpath_id) |
d62a17ae | 3800 | { |
3801 | struct prefix_rd prd; | |
3802 | struct prefix_evpn p; | |
3803 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3804 | uint8_t ippfx_len; |
3805 | uint32_t eth_tag; | |
b57ba6d2 | 3806 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3807 | int ret; |
c6ec0c74 KA |
3808 | afi_t gw_afi; |
3809 | bool is_valid_update = false; | |
d62a17ae | 3810 | |
3811 | /* Type-5 route should be 34 or 58 bytes: | |
3812 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3813 | * GW (4 or 16) and VNI (3). | |
3814 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3815 | */ | |
3816 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3817 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3818 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3819 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3820 | return -1; |
3821 | } | |
3822 | ||
3823 | /* Make prefix_rd */ | |
3824 | prd.family = AF_UNSPEC; | |
3825 | prd.prefixlen = 64; | |
3826 | memcpy(&prd.val, pfx, 8); | |
3827 | pfx += 8; | |
3828 | ||
3829 | /* Make EVPN prefix. */ | |
3830 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3831 | p.family = AF_EVPN; |
50f74cf1 | 3832 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3833 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3834 | ||
3835 | /* Additional information outside of prefix - ESI and GW IP */ | |
3836 | memset(&evpn, 0, sizeof(evpn)); | |
3837 | ||
3838 | /* Fetch ESI */ | |
c44ab6f1 AK |
3839 | if (attr) |
3840 | memcpy(&attr->esi, pfx, sizeof(esi_t)); | |
3841 | pfx += ESI_BYTES; | |
d62a17ae | 3842 | |
3843 | /* Fetch Ethernet Tag. */ | |
3844 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3845 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3846 | pfx += 4; |
3847 | ||
3848 | /* Fetch IP prefix length. */ | |
3849 | ippfx_len = *pfx++; | |
3850 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3851 | flog_err( |
e50f7cfd | 3852 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3853 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3854 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3855 | return -1; | |
3856 | } | |
3714a385 | 3857 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3858 | |
3859 | /* Determine IPv4 or IPv6 prefix */ | |
3860 | /* Since the address and GW are from the same family, this just becomes | |
3861 | * a simple check on the total size. | |
3862 | */ | |
3863 | if (psize == 34) { | |
3714a385 | 3864 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3865 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3866 | pfx += 4; |
3867 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3868 | pfx += 4; | |
c6ec0c74 | 3869 | gw_afi = AF_INET; |
d62a17ae | 3870 | } else { |
3714a385 | 3871 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3872 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3873 | pfx += 16; |
3874 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3875 | pfx += 16; | |
c6ec0c74 | 3876 | gw_afi = AF_INET6; |
d62a17ae | 3877 | } |
3878 | ||
b57ba6d2 MK |
3879 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3880 | memset(&label, 0, sizeof(label)); | |
3881 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3882 | |
3883 | /* | |
3884 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3885 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3886 | * field | |
6b11bd8d | 3887 | */ |
d62a17ae | 3888 | |
c6ec0c74 KA |
3889 | if (attr) { |
3890 | is_valid_update = true; | |
0a50c248 | 3891 | if (is_zero_mac(&attr->rmac) && |
c6ec0c74 KA |
3892 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) |
3893 | is_valid_update = false; | |
3894 | ||
3895 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
3896 | is_valid_update = false; | |
3897 | } | |
3898 | ||
d62a17ae | 3899 | /* Process the route. */ |
c6ec0c74 | 3900 | if (is_valid_update) |
d62a17ae | 3901 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
3902 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3903 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3904 | else |
3905 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3906 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3907 | &prd, &label, 1, &evpn); |
d62a17ae | 3908 | |
3909 | return ret; | |
3910 | } | |
3911 | ||
5f040085 DS |
3912 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
3913 | const struct prefix_rd *prd, | |
3914 | mpls_label_t *label, uint32_t num_labels, | |
3915 | struct attr *attr) | |
d62a17ae | 3916 | { |
3917 | int len; | |
3918 | char temp[16]; | |
5f040085 | 3919 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 3920 | |
3921 | memset(&temp, 0, 16); | |
b03b8898 | 3922 | if (p->family != AF_EVPN) |
d62a17ae | 3923 | return; |
3924 | p_evpn_p = &(p->u.prefix_evpn); | |
3925 | ||
e9fc2840 | 3926 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3927 | IP and GW-IP have to be both ipv4 or ipv6 |
3928 | */ | |
3714a385 | 3929 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3930 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3931 | else |
e9fc2840 | 3932 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3933 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3934 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3935 | stream_put(s, prd->val, 8); | |
0af35d90 | 3936 | if (attr) |
c44ab6f1 | 3937 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 3938 | else |
c44ab6f1 | 3939 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 3940 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3941 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3942 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3943 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3944 | else |
3714a385 | 3945 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3946 | if (attr) { |
3714a385 | 3947 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3948 | stream_put_ipv4(s, |
3949 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3950 | else | |
3951 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3952 | } else { | |
3714a385 | 3953 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3954 | stream_put_ipv4(s, 0); |
3955 | else | |
3956 | stream_put(s, &temp, 16); | |
3957 | } | |
3958 | ||
b57ba6d2 | 3959 | if (num_labels) |
d62a17ae | 3960 | stream_put(s, label, 3); |
3961 | else | |
3962 | stream_put3(s, 0); | |
128ea8ab | 3963 | } |
3964 | ||
3965 | /* | |
3966 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3967 | */ | |
e3b78da8 | 3968 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 3969 | { |
e3b78da8 | 3970 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 3971 | |
d62a17ae | 3972 | /* Remove EVPN routes and schedule for processing. */ |
3973 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3974 | |
d62a17ae | 3975 | /* Clear "live" flag and see if hash needs to be freed. */ |
3976 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3977 | if (!is_vni_configured(vpn)) | |
3978 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3979 | } |
3980 | ||
3981 | /* | |
3982 | * Free a VNI entry; iterator function called during cleanup. | |
3983 | */ | |
e3b78da8 | 3984 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 3985 | { |
e3b78da8 | 3986 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 3987 | |
d62a17ae | 3988 | delete_all_vni_routes(bgp, vpn); |
3989 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3990 | } |
3991 | ||
c581d8b0 MK |
3992 | /* |
3993 | * Derive AUTO import RT for BGP VRF - L3VNI | |
3994 | */ | |
3995 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
3996 | { | |
5e53dce3 | 3997 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 3998 | |
c581d8b0 | 3999 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4000 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4001 | ||
4002 | /* Map RT to VRF */ | |
5e53dce3 T |
4003 | bgp_evpn = bgp_get_evpn(); |
4004 | if (!bgp_evpn) | |
10ebe1ab MK |
4005 | return; |
4006 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4007 | } |
4008 | ||
4009 | /* | |
4010 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4011 | */ | |
4012 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4013 | { | |
4014 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4015 | } | |
4016 | ||
4017 | /* | |
4018 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4019 | */ | |
4020 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4021 | { | |
4022 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4023 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4024 | } | |
4025 | ||
4026 | /* | |
4027 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4028 | */ | |
4029 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4030 | { | |
4031 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4032 | } | |
128ea8ab | 4033 | |
f1f8b53c MK |
4034 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4035 | { | |
5e53dce3 | 4036 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4037 | struct listnode *node = NULL; |
4038 | struct bgpevpn *vpn = NULL; | |
4039 | ||
5e53dce3 T |
4040 | bgp_evpn = bgp_get_evpn(); |
4041 | if (!bgp_evpn) | |
f1f8b53c MK |
4042 | return; |
4043 | ||
4992b4ae MK |
4044 | /* update all type-5 routes */ |
4045 | update_advertise_vrf_routes(bgp_vrf); | |
4046 | ||
4047 | /* update all type-2 routes */ | |
f1f8b53c | 4048 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4049 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4050 | } |
4051 | ||
bf1061d8 VB |
4052 | /* |
4053 | * Handle autort change for a given VNI. | |
4054 | */ | |
e3b78da8 | 4055 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4056 | { |
e3b78da8 | 4057 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4058 | |
bf1061d8 VB |
4059 | if (!is_import_rt_configured(vpn)) { |
4060 | if (is_vni_live(vpn)) | |
4061 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4062 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4063 | list_delete_all_node(vpn->import_rtl); |
4064 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4065 | if (is_vni_live(vpn)) | |
4066 | bgp_evpn_install_routes(bgp, vpn); | |
4067 | } | |
4068 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4069 | list_delete_all_node(vpn->export_rtl); |
4070 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4071 | if (is_vni_live(vpn)) | |
4072 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4073 | } | |
4074 | } | |
4075 | ||
128ea8ab | 4076 | /* |
4077 | * Public functions. | |
4078 | */ | |
4079 | ||
5424b7ba | 4080 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4081 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4082 | afi_t afi, safi_t safi) |
4083 | { | |
4084 | int ret = 0; | |
4085 | struct prefix_evpn evp; | |
4086 | char buf[PREFIX_STRLEN]; | |
4087 | ||
31310b25 | 4088 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4089 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4090 | if (ret) { | |
af4c2728 | 4091 | flog_err( |
e50f7cfd | 4092 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4093 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4094 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4095 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4096 | } |
4097 | } | |
4098 | ||
342dd0c6 | 4099 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4100 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4101 | { |
4102 | struct bgp_table *table = NULL; | |
9bcb3eef | 4103 | struct bgp_dest *dest = NULL; |
40381db7 | 4104 | struct bgp_path_info *pi; |
342dd0c6 | 4105 | |
053905d2 | 4106 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4107 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4108 | /* Only care about "selected" routes. Also ensure that |
4109 | * these are routes that are injectable into EVPN. | |
4110 | */ | |
25f2ca53 | 4111 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4112 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4113 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4114 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4115 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4116 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4117 | safi); |
25f2ca53 | 4118 | break; |
4119 | } | |
4120 | } | |
4121 | } | |
5424b7ba | 4122 | } |
342dd0c6 | 4123 | |
5fd9c12b KA |
4124 | /* |
4125 | * evpn - enable advertisement of default g/w | |
4126 | */ | |
4127 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4128 | safi_t safi, bool add) | |
4129 | { | |
4130 | struct prefix ip_prefix; | |
4131 | ||
4132 | /* form the default prefix 0.0.0.0/0 */ | |
4133 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4134 | ip_prefix.family = afi2family(afi); | |
4135 | ||
4136 | if (add) { | |
4137 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4138 | NULL, afi, safi); | |
4139 | } else { | |
4140 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4141 | afi, safi); | |
4142 | } | |
4143 | } | |
4144 | ||
4145 | ||
2f69f6d3 | 4146 | /* |
4147 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4148 | * to this function correspond to those of the source IP prefix (best | |
4149 | * path in the case of the attr. In the case of a local prefix (when we | |
4150 | * are advertising local subnets), the src_attr will be NULL. | |
4151 | */ | |
bd494ec5 | 4152 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4153 | struct attr *src_attr, afi_t afi, |
4154 | safi_t safi) | |
5424b7ba MK |
4155 | { |
4156 | int ret = 0; | |
4157 | struct prefix_evpn evp; | |
4158 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4159 | |
31310b25 | 4160 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4161 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4162 | if (ret) | |
e50f7cfd | 4163 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4164 | "%u: Failed to create type-5 route for prefix %s", |
4165 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4166 | } |
4167 | ||
2f69f6d3 | 4168 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4169 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4170 | * advertisement is enabled. | |
4171 | */ | |
996c9314 LB |
4172 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4173 | safi_t safi) | |
342dd0c6 | 4174 | { |
4175 | struct bgp_table *table = NULL; | |
9bcb3eef | 4176 | struct bgp_dest *dest = NULL; |
40381db7 | 4177 | struct bgp_path_info *pi; |
342dd0c6 | 4178 | |
053905d2 | 4179 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4180 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4181 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4182 | * attribute. Also, ensure that the route is injectable |
4183 | * into EVPN. | |
2f69f6d3 | 4184 | * TODO: Support for AddPath for EVPN. |
4185 | */ | |
9bcb3eef | 4186 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4187 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4188 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4189 | |
4190 | /* apply the route-map */ | |
4191 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4192 | route_map_result_t ret; |
e34291b8 | 4193 | struct bgp_path_info tmp_pi; |
4194 | struct bgp_path_info_extra tmp_pie; | |
4195 | struct attr tmp_attr; | |
4196 | ||
4197 | tmp_attr = *pi->attr; | |
4198 | ||
4199 | /* Fill temp path_info */ | |
9bcb3eef DS |
4200 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4201 | dest, pi, pi->peer, | |
4202 | &tmp_attr); | |
e34291b8 | 4203 | |
4204 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4205 | |
996c9314 LB |
4206 | ret = route_map_apply( |
4207 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4208 | .map, | |
9bcb3eef | 4209 | bgp_dest_get_prefix(dest), |
b54892e0 | 4210 | RMAP_BGP, &tmp_pi); |
e34291b8 | 4211 | if (ret == RMAP_DENYMATCH) { |
4212 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4213 | continue; |
e34291b8 | 4214 | } |
4215 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4216 | bgp_vrf, |
9bcb3eef | 4217 | bgp_dest_get_prefix(dest), |
b54892e0 | 4218 | &tmp_attr, afi, safi); |
e34291b8 | 4219 | } else |
4220 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4221 | bgp_vrf, |
9bcb3eef | 4222 | bgp_dest_get_prefix(dest), |
b54892e0 | 4223 | pi->attr, afi, safi); |
2f69f6d3 | 4224 | break; |
4225 | } | |
4226 | } | |
31310b25 | 4227 | } |
342dd0c6 | 4228 | } |
4229 | ||
996c9314 | 4230 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4231 | { |
4232 | struct listnode *node, *nnode, *node_to_del; | |
4233 | struct ecommunity *ecom, *ecom_auto; | |
4234 | struct ecommunity_val eval; | |
4235 | ||
bf1061d8 VB |
4236 | if (bgp->advertise_autort_rfc8365) |
4237 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4238 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4239 | ||
4240 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4241 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4242 | node_to_del = NULL; |
4243 | ||
4244 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4245 | if (ecommunity_match(ecom, ecom_auto)) { | |
4246 | ecommunity_free(&ecom); | |
4247 | node_to_del = node; | |
4248 | } | |
4249 | } | |
4250 | ||
4251 | if (node_to_del) | |
4252 | list_delete_node(rtl, node_to_del); | |
4253 | ||
4254 | ecommunity_free(&ecom_auto); | |
4255 | } | |
4256 | ||
4257 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4258 | struct ecommunity *ecomadd) |
c581d8b0 | 4259 | { |
5ba238b7 | 4260 | /* uninstall routes from vrf */ |
3d0b43d7 | 4261 | if (is_l3vni_live(bgp_vrf)) |
4262 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4263 | |
4264 | /* Cleanup the RT to VRF mapping */ | |
4265 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4266 | ||
c581d8b0 MK |
4267 | /* Remove auto generated RT */ |
4268 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4269 | ||
4270 | /* Add the newly configured RT to RT list */ | |
4271 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4272 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4273 | ||
3d0b43d7 | 4274 | /* map VRF to its RTs and install routes matching the new RTs */ |
4275 | if (is_l3vni_live(bgp_vrf)) { | |
4276 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4277 | install_routes_for_vrf(bgp_vrf); | |
4278 | } | |
c581d8b0 MK |
4279 | } |
4280 | ||
4281 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4282 | struct ecommunity *ecomdel) | |
4283 | { | |
4284 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4285 | struct ecommunity *ecom = NULL; | |
4286 | ||
5ba238b7 | 4287 | /* uninstall routes from vrf */ |
3d0b43d7 | 4288 | if (is_l3vni_live(bgp_vrf)) |
4289 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4290 | |
4291 | /* Cleanup the RT to VRF mapping */ | |
4292 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4293 | ||
c581d8b0 MK |
4294 | /* remove the RT from the RT list */ |
4295 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4296 | if (ecommunity_match(ecom, ecomdel)) { | |
4297 | ecommunity_free(&ecom); | |
4298 | node_to_del = node; | |
4299 | break; | |
4300 | } | |
4301 | } | |
4302 | ||
4303 | if (node_to_del) | |
4304 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4305 | ||
b3a4db3d | 4306 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4307 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4308 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4309 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4310 | if (is_l3vni_live(bgp_vrf)) |
4311 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4312 | } |
4313 | ||
3d0b43d7 | 4314 | /* map VRFs to its RTs and install routes matching this new RT */ |
4315 | if (is_l3vni_live(bgp_vrf)) { | |
4316 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4317 | install_routes_for_vrf(bgp_vrf); | |
4318 | } | |
c581d8b0 MK |
4319 | } |
4320 | ||
4321 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4322 | struct ecommunity *ecomadd) | |
4323 | { | |
4324 | /* remove auto-generated RT */ | |
4325 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4326 | ||
4327 | /* Add the new RT to the RT list */ | |
4328 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4329 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4330 | ||
ebdc9e64 AD |
4331 | if (is_l3vni_live(bgp_vrf)) |
4332 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4333 | } |
4334 | ||
4335 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4336 | struct ecommunity *ecomdel) | |
4337 | { | |
4338 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4339 | struct ecommunity *ecom = NULL; | |
4340 | ||
4341 | /* Remove the RT from the RT list */ | |
4342 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4343 | if (ecommunity_match(ecom, ecomdel)) { | |
4344 | ecommunity_free(&ecom); | |
4345 | node_to_del = node; | |
4346 | break; | |
4347 | } | |
4348 | } | |
4349 | ||
4350 | if (node_to_del) | |
4351 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4352 | ||
1525e99f DS |
4353 | /* |
4354 | * Temporary assert to make SA happy. | |
4355 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4356 | * which means that SA is going to complain about | |
4357 | * the list_isempty call, which doesn't NULL check. | |
4358 | * So until we get this situation cleaned up, here | |
4359 | * we are. | |
4360 | */ | |
4361 | assert(bgp_vrf->vrf_export_rtl); | |
4362 | ||
c581d8b0 | 4363 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4364 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4365 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4366 | if (is_l3vni_live(bgp_vrf)) |
4367 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4368 | } |
4369 | ||
ebdc9e64 AD |
4370 | if (is_l3vni_live(bgp_vrf)) |
4371 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4372 | } |
4373 | ||
2d48ee25 | 4374 | /* |
4375 | * Handle change to BGP router id. This is invoked twice by the change | |
4376 | * handler, first before the router id has been changed and then after | |
4377 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4378 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4379 | * will result in the routes being re-advertised. |
4380 | */ | |
d62a17ae | 4381 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4382 | { |
5394a276 CS |
4383 | struct listnode *node; |
4384 | struct bgp *bgp_vrf; | |
4385 | ||
676f83b9 | 4386 | if (withdraw) { |
4387 | ||
4388 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4389 | stored in the global table for this vrf |
4390 | */ | |
80b140af | 4391 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4392 | |
4393 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4394 | * L2-VNIs |
4395 | */ | |
d62a17ae | 4396 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4397 | (void (*)(struct hash_bucket *, |
d62a17ae | 4398 | void *))withdraw_router_id_vni, |
4399 | bgp); | |
5394a276 CS |
4400 | |
4401 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4402 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4403 | if (bgp_vrf->evpn_info->advertise_pip && | |
4404 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4405 | == INADDR_ANY)) | |
4406 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4407 | = INADDR_ANY; | |
4408 | } | |
4409 | } | |
676f83b9 | 4410 | } else { |
4411 | ||
5394a276 CS |
4412 | /* Assign new default instance router-id */ |
4413 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4414 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4415 | if (bgp_vrf->evpn_info->advertise_pip && | |
4416 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4417 | == INADDR_ANY)) { | |
4418 | bgp_vrf->evpn_info->pip_ip = | |
4419 | bgp->router_id; | |
4420 | /* advertise type-5 routes with | |
4421 | * new nexthop | |
4422 | */ | |
4423 | update_advertise_vrf_routes(bgp_vrf); | |
4424 | } | |
4425 | } | |
4426 | } | |
4427 | ||
676f83b9 | 4428 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4429 | * RD |
4430 | */ | |
80b140af | 4431 | update_router_id_vrf(bgp); |
676f83b9 | 4432 | |
4433 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4434 | * new RD |
4435 | */ | |
d62a17ae | 4436 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4437 | (void (*)(struct hash_bucket *, |
d62a17ae | 4438 | void *))update_router_id_vni, |
4439 | bgp); | |
676f83b9 | 4440 | } |
2d48ee25 | 4441 | } |
4442 | ||
bf1061d8 VB |
4443 | /* |
4444 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4445 | */ | |
4446 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4447 | { | |
4448 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4449 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4450 | void*))update_autort_vni, |
4451 | bgp); | |
4452 | } | |
4453 | ||
90e60aa7 | 4454 | /* |
4455 | * Handle change to export RT - update and advertise local routes. | |
4456 | */ | |
d62a17ae | 4457 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4458 | { |
d62a17ae | 4459 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4460 | } |
4461 | ||
996c9314 | 4462 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4463 | { |
4464 | if (withdraw) | |
4465 | delete_withdraw_vrf_routes(bgp_vrf); | |
4466 | else | |
4467 | update_advertise_vrf_routes(bgp_vrf); | |
4468 | } | |
4469 | ||
90e60aa7 | 4470 | /* |
4471 | * Handle change to RD. This is invoked twice by the change handler, | |
4472 | * first before the RD has been changed and then after the RD has | |
4473 | * been changed. The first invocation will result in local routes | |
4474 | * of this VNI being deleted and withdrawn and the next will result | |
4475 | * in the routes being re-advertised. | |
4476 | */ | |
d62a17ae | 4477 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4478 | int withdraw) | |
90e60aa7 | 4479 | { |
d62a17ae | 4480 | if (withdraw) |
4481 | delete_withdraw_vni_routes(bgp, vpn); | |
4482 | else | |
4483 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4484 | } |
4485 | ||
4486 | /* | |
4487 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4488 | */ | |
d62a17ae | 4489 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4490 | { |
d62a17ae | 4491 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4492 | } |
4493 | ||
4494 | /* | |
4495 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4496 | * to Import RT. | |
4497 | */ | |
d62a17ae | 4498 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4499 | { |
d62a17ae | 4500 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4501 | } |
4502 | ||
b16031a2 | 4503 | /* |
b57ba6d2 | 4504 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4505 | */ |
d7c0a89a | 4506 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4507 | int len) |
b16031a2 | 4508 | { |
b57ba6d2 | 4509 | vni_t vni1, vni2; |
b16031a2 | 4510 | |
b57ba6d2 MK |
4511 | vni1 = label2vni(label); |
4512 | if (num_labels == 2) { | |
996c9314 | 4513 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4514 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4515 | } else | |
4516 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4517 | return buf; |
b16031a2 | 4518 | } |
4519 | ||
9c92b5f7 MK |
4520 | /* |
4521 | * Function to convert evpn route to json format. | |
4522 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4523 | */ | |
bd494ec5 | 4524 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4525 | { |
b682f6de | 4526 | char buf1[ETHER_ADDR_STRLEN]; |
4527 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4528 | uint8_t family; |
4529 | uint8_t prefixlen; | |
9c92b5f7 | 4530 | |
b682f6de | 4531 | if (!json) |
4532 | return; | |
9c92b5f7 | 4533 | |
44c69747 LK |
4534 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4535 | ||
4536 | switch (p->prefix.route_type) { | |
4537 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4538 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4539 | p->prefix.macip_addr.eth_tag); |
4540 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4541 | json_object_string_add(json, "mac", | |
4542 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4543 | sizeof(buf1))); | |
4544 | ||
4545 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4546 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4547 | AF_INET6; | |
4548 | prefixlen = (family == AF_INET) ? | |
4549 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4550 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4551 | buf2, PREFIX2STR_BUFFER); | |
4552 | json_object_int_add(json, "ipLen", prefixlen); | |
4553 | json_object_string_add(json, "ip", buf2); | |
4554 | } | |
4555 | break; | |
dff8f48d | 4556 | |
44c69747 LK |
4557 | case BGP_EVPN_IMET_ROUTE: |
4558 | json_object_int_add(json, "ethTag", | |
4559 | p->prefix.imet_addr.eth_tag); | |
4560 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4561 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4562 | IPV6_MAX_BITLEN; | |
4563 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4564 | PREFIX2STR_BUFFER); | |
4565 | json_object_int_add(json, "ipLen", prefixlen); | |
4566 | json_object_string_add(json, "ip", buf2); | |
4567 | break; | |
dff8f48d | 4568 | |
44c69747 LK |
4569 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4570 | json_object_int_add(json, "ethTag", | |
4571 | p->prefix.prefix_addr.eth_tag); | |
4572 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4573 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4574 | buf2, sizeof(buf2)); | |
4575 | json_object_int_add(json, "ipLen", | |
4576 | p->prefix.prefix_addr.ip_prefix_length); | |
4577 | json_object_string_add(json, "ip", buf2); | |
4578 | break; | |
4579 | ||
4580 | default: | |
4581 | break; | |
dff8f48d | 4582 | } |
9c92b5f7 MK |
4583 | } |
4584 | ||
520d5d76 | 4585 | /* |
4586 | * Function to convert evpn route to string. | |
4587 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4588 | */ | |
bd494ec5 | 4589 | char *bgp_evpn_route2str(const struct prefix_evpn *p, char *buf, int len) |
d62a17ae | 4590 | { |
4591 | char buf1[ETHER_ADDR_STRLEN]; | |
4592 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4593 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4594 | |
4595 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4596 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4597 | p->prefix.imet_addr.eth_tag, |
4598 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4599 | : IPV6_MAX_BITLEN, |
3714a385 | 4600 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4601 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4602 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4603 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4604 | p->prefix.route_type, | |
3714a385 | 4605 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4606 | 8 * ETH_ALEN, |
3714a385 | 4607 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4608 | sizeof(buf1))); |
4609 | else { | |
d7c0a89a | 4610 | uint8_t family; |
d62a17ae | 4611 | |
3714a385 | 4612 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4613 | : AF_INET6; |
554cd77a VB |
4614 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4615 | p->prefix.route_type, | |
3714a385 | 4616 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4617 | 8 * ETH_ALEN, |
3714a385 | 4618 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4619 | sizeof(buf1)), |
4620 | family == AF_INET ? IPV4_MAX_BITLEN | |
4621 | : IPV6_MAX_BITLEN, | |
3714a385 | 4622 | inet_ntop(family, |
4623 | &p->prefix.macip_addr.ip.ip.addr, | |
4624 | buf2, | |
d62a17ae | 4625 | PREFIX2STR_BUFFER)); |
4626 | } | |
342dd0c6 | 4627 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4628 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4629 | p->prefix.route_type, | |
3714a385 | 4630 | p->prefix.prefix_addr.eth_tag, |
4631 | p->prefix.prefix_addr.ip_prefix_length, | |
4632 | is_evpn_prefix_ipaddr_v4(p) | |
4633 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4634 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4635 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4636 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4637 | p->prefix.route_type, | |
4638 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4639 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4640 | : IPV6_MAX_BITLEN, | |
4641 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
c44ab6f1 AK |
4642 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
4643 | snprintf(buf, len, "[%d]:[%u]:[%s]:[%d]:[%s]", | |
4644 | p->prefix.route_type, | |
4645 | p->prefix.ead_addr.eth_tag, | |
4646 | esi_to_str(&p->prefix.ead_addr.esi, | |
4647 | buf3, sizeof(buf3)), | |
4648 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4649 | : IPV6_MAX_BITLEN, | |
4650 | inet_ntoa(p->prefix.ead_addr.ip.ipaddr_v4)); | |
d62a17ae | 4651 | } else { |
b03b8898 | 4652 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4653 | snprintf(buf, len, "(unsupported route type %d)", |
4654 | p->prefix.route_type); | |
d62a17ae | 4655 | } |
4656 | ||
4657 | return (buf); | |
520d5d76 | 4658 | } |
4659 | ||
128ea8ab | 4660 | /* |
4661 | * Encode EVPN prefix in Update (MP_REACH) | |
4662 | */ | |
5f040085 DS |
4663 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4664 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4665 | uint32_t num_labels, struct attr *attr, |
4666 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4667 | { |
4668 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4669 | int len, ipa_len = 0; |
d62a17ae | 4670 | |
4671 | if (addpath_encode) | |
4672 | stream_putl(s, addpath_tx_id); | |
4673 | ||
4674 | /* Route type */ | |
4675 | stream_putc(s, evp->prefix.route_type); | |
4676 | ||
4677 | switch (evp->prefix.route_type) { | |
4678 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4679 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4680 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4681 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4682 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4683 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4684 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4685 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4686 | len += 3; | |
4687 | stream_putc(s, len); | |
996c9314 | 4688 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4689 | if (attr) |
c44ab6f1 | 4690 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4691 | else |
4692 | stream_put(s, 0, 10); | |
3714a385 | 4693 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4694 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4695 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4696 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4697 | if (ipa_len) /* IP */ | |
4698 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4699 | ipa_len); | |
b57ba6d2 MK |
4700 | /* 1st label is the L2 VNI */ |
4701 | stream_put(s, label, BGP_LABEL_BYTES); | |
4702 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4703 | if (ipa_len && num_labels > 1) | |
996c9314 | 4704 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4705 | break; |
4706 | ||
4707 | case BGP_EVPN_IMET_ROUTE: | |
4708 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4709 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4710 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4711 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4712 | /* Originating Router's IP Addr */ | |
3714a385 | 4713 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4714 | break; |
4715 | ||
50f74cf1 | 4716 | case BGP_EVPN_ES_ROUTE: |
4717 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4718 | stream_put(s, prd->val, 8); /* RD */ | |
4719 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4720 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4721 | /* VTEP IP */ |
4722 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4723 | break; |
4724 | ||
c44ab6f1 AK |
4725 | case BGP_EVPN_AD_ROUTE: |
4726 | /* RD, ESI, EthTag, 1 VNI */ | |
4727 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4728 | stream_putc(s, len); | |
4729 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4730 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4731 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4732 | stream_put(s, label, BGP_LABEL_BYTES); | |
4733 | break; | |
4734 | ||
d62a17ae | 4735 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4736 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4737 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4738 | break; |
4739 | ||
4740 | default: | |
4741 | break; | |
4742 | } | |
4743 | } | |
4744 | ||
4745 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4746 | struct bgp_nlri *packet, int withdraw) | |
4747 | { | |
d7c0a89a QY |
4748 | uint8_t *pnt; |
4749 | uint8_t *lim; | |
d62a17ae | 4750 | afi_t afi; |
4751 | safi_t safi; | |
d7c0a89a | 4752 | uint32_t addpath_id; |
d62a17ae | 4753 | int addpath_encoded; |
4754 | int psize = 0; | |
d7c0a89a | 4755 | uint8_t rtype; |
d62a17ae | 4756 | struct prefix p; |
4757 | ||
d62a17ae | 4758 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4759 | pnt = packet->nlri; | |
4760 | lim = pnt + packet->length; | |
4761 | afi = packet->afi; | |
4762 | safi = packet->safi; | |
4763 | addpath_id = 0; | |
4764 | ||
4765 | addpath_encoded = | |
4766 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4767 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4768 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4769 | ||
4770 | for (; pnt < lim; pnt += psize) { | |
4771 | /* Clear prefix structure. */ | |
4772 | memset(&p, 0, sizeof(struct prefix)); | |
4773 | ||
4774 | /* Deal with path-id if AddPath is supported. */ | |
4775 | if (addpath_encoded) { | |
4776 | /* When packet overflow occurs return immediately. */ | |
4777 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4778 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4779 | |
a3a850a1 S |
4780 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4781 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4782 | pnt += BGP_ADDPATH_ID_LEN; |
4783 | } | |
4784 | ||
4785 | /* All EVPN NLRI types start with type and length. */ | |
4786 | if (pnt + 2 > lim) | |
513386b5 | 4787 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4788 | |
4789 | rtype = *pnt++; | |
3f54c705 | 4790 | psize = *pnt++; |
d62a17ae | 4791 | |
4792 | /* When packet overflow occur return immediately. */ | |
4793 | if (pnt + psize > lim) | |
513386b5 | 4794 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4795 | |
4796 | switch (rtype) { | |
4797 | case BGP_EVPN_MAC_IP_ROUTE: | |
4798 | if (process_type2_route(peer, afi, safi, | |
4799 | withdraw ? NULL : attr, pnt, | |
4800 | psize, addpath_id)) { | |
af4c2728 | 4801 | flog_err( |
e50f7cfd | 4802 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4803 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4804 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4805 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4806 | } |
4807 | break; | |
4808 | ||
4809 | case BGP_EVPN_IMET_ROUTE: | |
4810 | if (process_type3_route(peer, afi, safi, | |
4811 | withdraw ? NULL : attr, pnt, | |
4812 | psize, addpath_id)) { | |
af4c2728 | 4813 | flog_err( |
e50f7cfd | 4814 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4815 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4816 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4817 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4818 | } |
4819 | break; | |
4820 | ||
50f74cf1 | 4821 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 4822 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 4823 | withdraw ? NULL : attr, pnt, |
4824 | psize, addpath_id)) { | |
af4c2728 | 4825 | flog_err( |
e50f7cfd | 4826 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4827 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4828 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4829 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4830 | } |
4831 | break; | |
4832 | ||
c44ab6f1 AK |
4833 | case BGP_EVPN_AD_ROUTE: |
4834 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
4835 | withdraw ? NULL : attr, pnt, | |
4836 | psize, addpath_id)) { | |
4837 | flog_err( | |
4838 | EC_BGP_PKT_PROCESS, | |
4839 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
4840 | peer->bgp->vrf_id, peer->host, psize); | |
4841 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
4842 | } | |
4843 | break; | |
4844 | ||
d62a17ae | 4845 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4846 | if (process_type5_route(peer, afi, safi, |
4847 | withdraw ? NULL : attr, pnt, | |
4848 | psize, addpath_id)) { | |
af4c2728 | 4849 | flog_err( |
e50f7cfd | 4850 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4851 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4852 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4853 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4854 | } |
4855 | break; | |
4856 | ||
4857 | default: | |
4858 | break; | |
4859 | } | |
4860 | } | |
4861 | ||
4862 | /* Packet length consistency check. */ | |
4863 | if (pnt != lim) | |
513386b5 | 4864 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 4865 | |
513386b5 | 4866 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 4867 | } |
4868 | ||
10ebe1ab MK |
4869 | /* |
4870 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4871 | * The mapping will be used during route processing. | |
4872 | * bgp_def: default bgp instance | |
4873 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4874 | */ | |
4875 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4876 | { | |
4877 | int i = 0; | |
4878 | struct ecommunity_val *eval = NULL; | |
4879 | struct listnode *node = NULL, *nnode = NULL; | |
4880 | struct ecommunity *ecom = NULL; | |
4881 | ||
4882 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4883 | for (i = 0; i < ecom->size; i++) { | |
4884 | eval = (struct ecommunity_val *)(ecom->val | |
4885 | + (i | |
4886 | * ECOMMUNITY_SIZE)); | |
4887 | map_vrf_to_rt(bgp_vrf, eval); | |
4888 | } | |
4889 | } | |
4890 | } | |
4891 | ||
4892 | /* | |
4893 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4894 | */ | |
4895 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4896 | { | |
4897 | int i; | |
4898 | struct ecommunity_val *eval; | |
4899 | struct listnode *node, *nnode; | |
4900 | struct ecommunity *ecom; | |
4901 | ||
4902 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4903 | for (i = 0; i < ecom->size; i++) { | |
4904 | struct vrf_irt_node *irt; | |
4905 | struct ecommunity_val eval_tmp; | |
4906 | ||
4907 | eval = (struct ecommunity_val *)(ecom->val | |
4908 | + (i | |
4909 | * ECOMMUNITY_SIZE)); | |
4910 | /* If using "automatic" RT, we only care about the | |
4911 | * local-admin sub-field. | |
4912 | * This is to facilitate using VNI as the RT for EBGP | |
4913 | * peering too. | |
4914 | */ | |
4915 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4916 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4917 | BGP_VRF_IMPORT_RT_CFGD)) | |
4918 | mask_ecom_global_admin(&eval_tmp, eval); | |
4919 | ||
4920 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4921 | if (irt) | |
4922 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4923 | } | |
4924 | } | |
4925 | } | |
4926 | ||
4927 | ||
128ea8ab | 4928 | /* |
4929 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4930 | * The mapping will be used during route processing. | |
4931 | */ | |
d62a17ae | 4932 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4933 | { |
d62a17ae | 4934 | int i; |
4935 | struct ecommunity_val *eval; | |
4936 | struct listnode *node, *nnode; | |
4937 | struct ecommunity *ecom; | |
128ea8ab | 4938 | |
d62a17ae | 4939 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4940 | for (i = 0; i < ecom->size; i++) { | |
4941 | eval = (struct ecommunity_val *)(ecom->val | |
4942 | + (i | |
4943 | * ECOMMUNITY_SIZE)); | |
4944 | map_vni_to_rt(bgp, vpn, eval); | |
4945 | } | |
4946 | } | |
128ea8ab | 4947 | } |
4948 | ||
4949 | /* | |
4950 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4951 | */ | |
d62a17ae | 4952 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4953 | { |
d62a17ae | 4954 | int i; |
4955 | struct ecommunity_val *eval; | |
4956 | struct listnode *node, *nnode; | |
4957 | struct ecommunity *ecom; | |
128ea8ab | 4958 | |
d62a17ae | 4959 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4960 | for (i = 0; i < ecom->size; i++) { | |
4961 | struct irt_node *irt; | |
4962 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4963 | |
d62a17ae | 4964 | eval = (struct ecommunity_val *)(ecom->val |
4965 | + (i | |
4966 | * ECOMMUNITY_SIZE)); | |
4967 | /* If using "automatic" RT, we only care about the | |
4968 | * local-admin sub-field. | |
4969 | * This is to facilitate using VNI as the RT for EBGP | |
4970 | * peering too. | |
4971 | */ | |
4972 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4973 | if (!is_import_rt_configured(vpn)) | |
4974 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4975 | |
d62a17ae | 4976 | irt = lookup_import_rt(bgp, &eval_tmp); |
4977 | if (irt) | |
4978 | unmap_vni_from_rt(bgp, vpn, irt); | |
4979 | } | |
4980 | } | |
128ea8ab | 4981 | } |
4982 | ||
4983 | /* | |
4984 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4985 | * The mapping will be used during route processing. | |
4986 | */ | |
d62a17ae | 4987 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4988 | { |
c581d8b0 | 4989 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4990 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4991 | |
d62a17ae | 4992 | /* Map RT to VNI */ |
4993 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4994 | } |
4995 | ||
4996 | /* | |
4997 | * Derive Export RT automatically for VNI. | |
4998 | */ | |
d62a17ae | 4999 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5000 | { |
c581d8b0 | 5001 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5002 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5003 | } |
5004 | ||
676f83b9 | 5005 | /* |
5006 | * Derive RD automatically for VNI using passed information - it | |
5007 | * is of the form RouterId:unique-id-for-vni. | |
5008 | */ | |
5009 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5010 | { | |
9e97ff03 CS |
5011 | if (is_vrf_rd_configured(bgp)) |
5012 | return; | |
5013 | ||
92708db6 | 5014 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5015 | } |
5016 | ||
128ea8ab | 5017 | /* |
5018 | * Derive RD automatically for VNI using passed information - it | |
5019 | * is of the form RouterId:unique-id-for-vni. | |
5020 | */ | |
d62a17ae | 5021 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5022 | { |
c44ab6f1 | 5023 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5024 | |
d62a17ae | 5025 | vpn->prd.family = AF_UNSPEC; |
5026 | vpn->prd.prefixlen = 64; | |
772270f3 QY |
5027 | snprintf(buf, sizeof(buf), "%s:%hu", inet_ntoa(bgp->router_id), |
5028 | vpn->rd_id); | |
cbb65f5e | 5029 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5030 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5031 | } |
5032 | ||
7df407ed CS |
5033 | /* |
5034 | * Lookup L3-VNI | |
5035 | */ | |
5036 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5037 | { | |
5038 | struct list *inst = bm->bgp; | |
5039 | struct listnode *node; | |
5040 | struct bgp *bgp_vrf; | |
5041 | ||
5042 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5043 | if (bgp_vrf->l3vni == vni) | |
5044 | return true; | |
5045 | } | |
5046 | ||
5047 | return false; | |
5048 | } | |
5049 | ||
128ea8ab | 5050 | /* |
5051 | * Lookup VNI. | |
5052 | */ | |
d62a17ae | 5053 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5054 | { |
d62a17ae | 5055 | struct bgpevpn *vpn; |
5056 | struct bgpevpn tmp; | |
128ea8ab | 5057 | |
d62a17ae | 5058 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5059 | tmp.vni = vni; | |
5060 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5061 | return vpn; | |
128ea8ab | 5062 | } |
5063 | ||
5064 | /* | |
5065 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5066 | */ | |
d62a17ae | 5067 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5068 | struct in_addr originator_ip, |
5069 | vrf_id_t tenant_vrf_id, | |
5070 | struct in_addr mcast_grp) | |
128ea8ab | 5071 | { |
d62a17ae | 5072 | struct bgpevpn *vpn; |
128ea8ab | 5073 | |
d62a17ae | 5074 | if (!bgp) |
5075 | return NULL; | |
128ea8ab | 5076 | |
d62a17ae | 5077 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5078 | |
d62a17ae | 5079 | /* Set values - RD and RT set to defaults. */ |
5080 | vpn->vni = vni; | |
5081 | vpn->originator_ip = originator_ip; | |
29c53922 | 5082 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5083 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5084 | |
d62a17ae | 5085 | /* Initialize route-target import and export lists */ |
5086 | vpn->import_rtl = list_new(); | |
5087 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5088 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5089 | vpn->export_rtl = list_new(); |
5090 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5091 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5092 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5093 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5094 | |
d62a17ae | 5095 | /* Initialize EVPN route table. */ |
960035b2 | 5096 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5097 | |
d62a17ae | 5098 | /* Add to hash */ |
5099 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5100 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5101 | return NULL; | |
5102 | } | |
6a8657d0 MK |
5103 | |
5104 | /* add to l2vni list on corresponding vrf */ | |
5105 | bgpevpn_link_to_l3vni(vpn); | |
5106 | ||
c44ab6f1 AK |
5107 | bgp_evpn_vni_es_init(vpn); |
5108 | ||
d62a17ae | 5109 | QOBJ_REG(vpn, bgpevpn); |
5110 | return vpn; | |
128ea8ab | 5111 | } |
5112 | ||
5113 | /* | |
5114 | * Free a given VPN - called in multiple scenarios such as zebra | |
5115 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5116 | * This just frees appropriate memory, caller should have taken other | |
5117 | * needed actions. | |
5118 | */ | |
d62a17ae | 5119 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5120 | { |
c44ab6f1 | 5121 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5122 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5123 | bgp_table_unlock(vpn->route_table); |
5124 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5125 | list_delete(&vpn->import_rtl); |
5126 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5127 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5128 | hash_release(bgp->vnihash, vpn); |
5129 | QOBJ_UNREG(vpn); | |
5130 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5131 | } |
5132 | ||
50f74cf1 | 5133 | /* |
5134 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5135 | */ |
d62a17ae | 5136 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5137 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5138 | { |
40381db7 | 5139 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5140 | } |
5141 | ||
5142 | /* | |
50f74cf1 | 5143 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5144 | */ |
d62a17ae | 5145 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5146 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5147 | { |
40381db7 | 5148 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5149 | } |
5150 | ||
db0e1937 MK |
5151 | /* filter routes which have martian next hops */ |
5152 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5153 | { | |
0291c246 MK |
5154 | afi_t afi; |
5155 | safi_t safi; | |
9bcb3eef | 5156 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5157 | struct bgp_table *table; |
40381db7 | 5158 | struct bgp_path_info *pi; |
db0e1937 MK |
5159 | |
5160 | afi = AFI_L2VPN; | |
5161 | safi = SAFI_EVPN; | |
5162 | ||
5163 | /* Walk entire global routing table and evaluate routes which could be | |
5164 | * imported into this VPN. Note that we cannot just look at the routes | |
5165 | * for the VNI's RD - | |
5166 | * remote routes applicable for this VNI could have any RD. | |
5167 | */ | |
5168 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5169 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5170 | rd_dest = bgp_route_next(rd_dest)) { | |
5171 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5172 | if (!table) |
5173 | continue; | |
5174 | ||
9bcb3eef DS |
5175 | for (dest = bgp_table_top(table); dest; |
5176 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5177 | |
9bcb3eef | 5178 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5179 | pi = pi->next) { |
db0e1937 MK |
5180 | |
5181 | /* Consider "valid" remote routes applicable for | |
5182 | * this VNI. */ | |
40381db7 DS |
5183 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5184 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5185 | continue; |
9bcb3eef DS |
5186 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5187 | pi->sub_type, pi->attr, | |
5188 | dest)) { | |
b54892e0 | 5189 | const struct prefix *p = |
9bcb3eef | 5190 | bgp_dest_get_prefix(dest); |
db0e1937 | 5191 | |
b54892e0 DS |
5192 | if (bgp_debug_update(pi->peer, p, NULL, |
5193 | 1)) { | |
5194 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5195 | |
b54892e0 | 5196 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5197 | attr_str, |
5198 | sizeof(attr_str)); | |
db0e1937 | 5199 | |
db0e1937 | 5200 | zlog_debug( |
b54892e0 | 5201 | "%u: prefix %pRN with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5202 | bgp->vrf_id, dest, |
db0e1937 | 5203 | attr_str); |
b54892e0 | 5204 | } |
db0e1937 | 5205 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5206 | p, pi); |
db0e1937 | 5207 | |
9bcb3eef | 5208 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5209 | safi); |
db0e1937 | 5210 | } |
db0e1937 MK |
5211 | } |
5212 | } | |
5213 | } | |
5214 | ||
5215 | return 0; | |
5216 | } | |
5217 | ||
128ea8ab | 5218 | /* |
5219 | * Handle del of a local MACIP. | |
5220 | */ | |
d62a17ae | 5221 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5222 | struct ipaddr *ip, int state) |
128ea8ab | 5223 | { |
d62a17ae | 5224 | struct bgpevpn *vpn; |
5225 | struct prefix_evpn p; | |
9bcb3eef | 5226 | struct bgp_dest *dest; |
128ea8ab | 5227 | |
d62a17ae | 5228 | /* Lookup VNI hash - should exist. */ |
5229 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5230 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5231 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5232 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5233 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5234 | return -1; | |
5235 | } | |
128ea8ab | 5236 | |
d62a17ae | 5237 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5238 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5239 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5240 | delete_evpn_route(bgp, vpn, &p); | |
5241 | } else { | |
5242 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5243 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5244 | if (dest) | |
5245 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5246 | } |
128ea8ab | 5247 | |
d62a17ae | 5248 | return 0; |
128ea8ab | 5249 | } |
5250 | ||
5251 | /* | |
5252 | * Handle add of a local MACIP. | |
5253 | */ | |
d62a17ae | 5254 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5255 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5256 | { |
d62a17ae | 5257 | struct bgpevpn *vpn; |
5258 | struct prefix_evpn p; | |
128ea8ab | 5259 | |
d62a17ae | 5260 | /* Lookup VNI hash - should exist. */ |
5261 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5262 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5263 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5264 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5265 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5266 | return -1; | |
5267 | } | |
128ea8ab | 5268 | |
d62a17ae | 5269 | /* Create EVPN type-2 route and schedule for processing. */ |
5270 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5271 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
d62a17ae | 5272 | char buf[ETHER_ADDR_STRLEN]; |
5273 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5274 | |
af4c2728 | 5275 | flog_err( |
e50f7cfd | 5276 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5277 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5278 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5279 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5280 | ? "sticky gateway" | |
5281 | : "", | |
d62a17ae | 5282 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5283 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5284 | return -1; |
5285 | } | |
128ea8ab | 5286 | |
d62a17ae | 5287 | return 0; |
128ea8ab | 5288 | } |
5289 | ||
e3b78da8 | 5290 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5291 | struct bgp *bgp_vrf) |
5292 | { | |
e3b78da8 | 5293 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5294 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5295 | |
5e53dce3 T |
5296 | bgp_evpn = bgp_get_evpn(); |
5297 | assert(bgp_evpn); | |
6a8657d0 | 5298 | |
6a8657d0 MK |
5299 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5300 | bgpevpn_link_to_l3vni(vpn); | |
5301 | } | |
5302 | ||
14e814ea CS |
5303 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5304 | struct ethaddr *svi_rmac, | |
5305 | struct ethaddr *vrr_rmac, | |
0483af6e | 5306 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5307 | ifindex_t svi_ifindex, |
5308 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5309 | { |
5310 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5311 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5312 | struct listnode *node = NULL; |
5313 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5314 | as_t as = 0; |
5315 | ||
3621ebc5 | 5316 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5317 | * auto-creatio |
5318 | */ | |
5e53dce3 T |
5319 | bgp_evpn = bgp_get_evpn(); |
5320 | if (!bgp_evpn) { | |
af4c2728 | 5321 | flog_err( |
e50f7cfd | 5322 | EC_BGP_NO_DFLT, |
3621ebc5 | 5323 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5324 | l3vni); |
fe1dc5a3 MK |
5325 | return -1; |
5326 | } | |
5e53dce3 | 5327 | as = bgp_evpn->as; |
fe1dc5a3 | 5328 | |
0437e105 | 5329 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5330 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5331 | if (!bgp_vrf) { |
5332 | ||
5333 | int ret = 0; | |
5334 | ||
5d5393b9 DL |
5335 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5336 | vrf_id == VRF_DEFAULT | |
5337 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5338 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5339 | switch (ret) { |
fe1dc5a3 | 5340 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5341 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5342 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5343 | return -1; |
5344 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5345 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5346 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5347 | return -1; |
5348 | } | |
5349 | ||
5350 | /* mark as auto created */ | |
5351 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5352 | } | |
5353 | ||
0483af6e | 5354 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5355 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5356 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5357 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5358 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5359 | |
14e814ea CS |
5360 | /* copy anycast MAC from VRR MAC */ |
5361 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5362 | /* copy sys RMAC from SVI MAC */ | |
5363 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5364 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5365 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5366 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5367 | ||
5368 | if (bgp_debug_zebra(NULL)) { | |
5369 | char buf[ETHER_ADDR_STRLEN]; | |
5370 | char buf1[ETHER_ADDR_STRLEN]; | |
5371 | char buf2[ETHER_ADDR_STRLEN]; | |
5372 | ||
5373 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5374 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5375 | bgp_vrf->l3vni, | |
5376 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5377 | : "disable", | |
5378 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5379 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5380 | buf1, sizeof(buf1)), | |
5381 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5382 | buf2, sizeof(buf2)), | |
5383 | is_anycast_mac ? "Enable" : "Disable"); | |
5384 | } | |
c48d9f5f | 5385 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5386 | if (filter) { |
c48d9f5f MK |
5387 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5388 | ||
10f70510 AD |
5389 | /* |
5390 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5391 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5392 | * that explicitly. | |
5393 | */ | |
5394 | } else { | |
5395 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5396 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5397 | ||
5398 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5399 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5400 | ||
5401 | /* | |
5402 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5403 | * flag, update all MACIP routes in this VNI | |
5404 | */ | |
5405 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5406 | update_all_type2_routes(bgp_evpn, vpn); | |
5407 | } | |
5408 | } | |
5409 | } | |
5410 | ||
530e8a6e | 5411 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5412 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5413 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5414 | else |
5415 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5416 | ||
c581d8b0 MK |
5417 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5418 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5419 | |
5420 | /* auto derive RD */ | |
676f83b9 | 5421 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5422 | |
6a8657d0 | 5423 | /* link all corresponding l2vnis */ |
5e53dce3 | 5424 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5425 | (void (*)(struct hash_bucket *, |
996c9314 | 5426 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5427 | bgp_vrf); |
5428 | ||
c48d9f5f MK |
5429 | /* Only update all corresponding type-2 routes if we are advertising two |
5430 | * labels along with type-2 routes | |
5431 | */ | |
5432 | if (!filter) | |
5433 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5434 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5435 | |
06d2e8f3 MK |
5436 | /* advertise type-5 routes if needed */ |
5437 | update_advertise_vrf_routes(bgp_vrf); | |
5438 | ||
5ba238b7 MK |
5439 | /* install all remote routes belonging to this l3vni into correspondng |
5440 | * vrf */ | |
5441 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5442 | |
5443 | return 0; | |
5444 | } | |
5445 | ||
996c9314 | 5446 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5447 | { |
5448 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5449 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5450 | struct listnode *node = NULL; |
18abc1eb | 5451 | struct listnode *next = NULL; |
f1f8b53c | 5452 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5453 | |
5454 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5455 | if (!bgp_vrf) { | |
af4c2728 | 5456 | flog_err( |
e50f7cfd | 5457 | EC_BGP_NO_DFLT, |
996c9314 LB |
5458 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5459 | l3vni); | |
fe1dc5a3 MK |
5460 | return -1; |
5461 | } | |
5462 | ||
5e53dce3 T |
5463 | bgp_evpn = bgp_get_evpn(); |
5464 | if (!bgp_evpn) { | |
af4c2728 | 5465 | flog_err( |
e50f7cfd | 5466 | EC_BGP_NO_DFLT, |
3621ebc5 | 5467 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5468 | l3vni); |
f1f8b53c MK |
5469 | return -1; |
5470 | } | |
5471 | ||
d846168d | 5472 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5473 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5474 | * routes. This will uninstalling the routes from zebra and decremnt the |
5475 | * bgp info count. | |
523cafc4 | 5476 | */ |
d846168d | 5477 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5478 | |
06d2e8f3 MK |
5479 | /* delete/withdraw all type-5 routes */ |
5480 | delete_withdraw_vrf_routes(bgp_vrf); | |
5481 | ||
fe1dc5a3 MK |
5482 | /* remove the l3vni from vrf instance */ |
5483 | bgp_vrf->l3vni = 0; | |
5484 | ||
5485 | /* remove the Rmac from the BGP vrf */ | |
5486 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5487 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5488 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5489 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5490 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5491 | |
530e8a6e | 5492 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5493 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5494 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5495 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5496 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5497 | } |
530e8a6e CS |
5498 | |
5499 | /* remove default export RT */ | |
5500 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5501 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5502 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5503 | } |
fe1dc5a3 | 5504 | |
f1f8b53c | 5505 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5506 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5507 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5508 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5509 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5510 | } |
5511 | } | |
fe1dc5a3 | 5512 | |
18abc1eb | 5513 | /* If any L2VNIs point to this instance, unlink them. */ |
5514 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5515 | bgpevpn_unlink_from_l3vni(vpn); | |
5516 | ||
ff9d54fb CS |
5517 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5518 | ||
fe1dc5a3 MK |
5519 | /* Delete the instance if it was autocreated */ |
5520 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5521 | bgp_delete(bgp_vrf); | |
5522 | ||
5523 | return 0; | |
5524 | } | |
5525 | ||
128ea8ab | 5526 | /* |
5527 | * Handle del of a local VNI. | |
5528 | */ | |
d62a17ae | 5529 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5530 | { |
d62a17ae | 5531 | struct bgpevpn *vpn; |
128ea8ab | 5532 | |
d62a17ae | 5533 | /* Locate VNI hash */ |
5534 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5535 | if (!vpn) { | |
1e00627b | 5536 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5537 | flog_warn( |
e50f7cfd | 5538 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5539 | "%u: VNI hash entry for VNI %u not found at DEL", |
5540 | bgp->vrf_id, vni); | |
d62a17ae | 5541 | return 0; |
5542 | } | |
128ea8ab | 5543 | |
d62a17ae | 5544 | /* Remove all local EVPN routes and schedule for processing (to |
5545 | * withdraw from peers). | |
5546 | */ | |
5547 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5548 | |
db0e1937 MK |
5549 | /* |
5550 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5551 | */ | |
5552 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5553 | ||
d62a17ae | 5554 | /* Clear "live" flag and see if hash needs to be freed. */ |
5555 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5556 | if (!is_vni_configured(vpn)) | |
5557 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5558 | |
d62a17ae | 5559 | return 0; |
128ea8ab | 5560 | } |
5561 | ||
5562 | /* | |
d1911c26 | 5563 | * Handle add (or update) of a local VNI. The VNI changes we care |
5564 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5565 | */ |
d62a17ae | 5566 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5567 | struct in_addr originator_ip, |
5568 | vrf_id_t tenant_vrf_id, | |
5569 | struct in_addr mcast_grp) | |
5570 | ||
d62a17ae | 5571 | { |
5572 | struct bgpevpn *vpn; | |
5573 | struct prefix_evpn p; | |
5574 | ||
d62a17ae | 5575 | /* Lookup VNI. If present and no change, exit. */ |
5576 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5577 | if (vpn) { |
29c53922 | 5578 | |
d1911c26 | 5579 | if (is_vni_live(vpn) |
5580 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5581 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5582 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5583 | /* Probably some other param has changed that we don't | |
5584 | * care about. */ | |
5585 | return 0; | |
5586 | ||
76d07c7a AK |
5587 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5588 | ||
d1911c26 | 5589 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5590 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5591 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5592 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5593 | bgpevpn_link_to_l3vni(vpn); |
5594 | } | |
29c53922 | 5595 | |
d1911c26 | 5596 | /* If tunnel endpoint IP has changed, update (and delete prior |
5597 | * type-3 route, if needed.) | |
5598 | */ | |
5599 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5600 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5601 | |
d1911c26 | 5602 | /* Update all routes with new endpoint IP and/or export RT |
5603 | * for VRFs | |
5604 | */ | |
5605 | if (is_vni_live(vpn)) | |
5606 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5607 | } |
5608 | ||
5609 | /* Create or update as appropriate. */ | |
5610 | if (!vpn) { | |
76d07c7a AK |
5611 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5612 | mcast_grp); | |
d62a17ae | 5613 | if (!vpn) { |
af4c2728 | 5614 | flog_err( |
e50f7cfd | 5615 | EC_BGP_VNI, |
d62a17ae | 5616 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5617 | bgp->vrf_id, vni); | |
5618 | return -1; | |
5619 | } | |
5620 | } | |
5621 | ||
db0e1937 | 5622 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5623 | if (is_vni_live(vpn)) |
5624 | return 0; | |
5625 | ||
d62a17ae | 5626 | /* Mark as "live" */ |
5627 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5628 | ||
db0e1937 MK |
5629 | /* tunnel is now active, add tunnel-ip to db */ |
5630 | bgp_tip_add(bgp, &originator_ip); | |
5631 | ||
5632 | /* filter routes as nexthop database has changed */ | |
5633 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5634 | ||
fd069644 DS |
5635 | /* |
5636 | * Create EVPN type-3 route and schedule for processing. | |
5637 | * | |
5638 | * RT-3 only if doing head-end replication | |
5639 | */ | |
833b8a50 AK |
5640 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5641 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5642 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5643 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5644 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5645 | "%u: Type3 route creation failure for VNI %u", | |
5646 | bgp->vrf_id, vni); | |
5647 | return -1; | |
5648 | } | |
d62a17ae | 5649 | } |
5650 | ||
5651 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5652 | * VNI, | |
5653 | * install them. | |
5654 | */ | |
5655 | install_routes_for_vni(bgp, vpn); | |
5656 | ||
d7d97010 MK |
5657 | /* If we are advertising gateway mac-ip |
5658 | It needs to be conveyed again to zebra */ | |
5659 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5660 | ||
df070e6f CS |
5661 | /* advertise svi mac-ip knob to zebra */ |
5662 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5663 | ||
d62a17ae | 5664 | return 0; |
b18825eb | 5665 | } |
14c1a7bf | 5666 | |
fd069644 DS |
5667 | /* |
5668 | * Handle change in setting for BUM handling. The supported values | |
5669 | * are head-end replication and dropping all BUM packets. Any change | |
5670 | * should be registered with zebra. Also, if doing head-end replication, | |
5671 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5672 | * to be dropped, the RT-3s must be withdrawn. | |
5673 | */ | |
5674 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5675 | { | |
5676 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5677 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5678 | "Flooding" : "Flooding Disabled"); | |
5679 | ||
5680 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5681 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5682 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5683 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5684 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5685 | } | |
5686 | ||
7724c0a1 | 5687 | /* |
5688 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5689 | * EVPN routes from peers. | |
5690 | */ | |
d62a17ae | 5691 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5692 | { |
e3b78da8 | 5693 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5694 | void *))cleanup_vni_on_disable, |
5695 | bgp); | |
7724c0a1 | 5696 | } |
5697 | ||
14c1a7bf | 5698 | /* |
5699 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5700 | * BGP instance (default) is being freed. | |
5701 | */ | |
d62a17ae | 5702 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5703 | { |
1525e99f | 5704 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5705 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5706 | bgp); |
5707 | ||
5708 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5709 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5710 | |
5711 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5712 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5713 | |
5714 | hash_free(bgp->vnihash); | |
d62a17ae | 5715 | bgp->vnihash = NULL; |
1525e99f | 5716 | |
6a154c88 DL |
5717 | list_delete(&bgp->vrf_import_rtl); |
5718 | list_delete(&bgp->vrf_export_rtl); | |
5719 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5720 | } |
5721 | ||
5722 | /* | |
5723 | * Initialization for EVPN | |
5724 | * Create | |
5725 | * VNI hash table | |
5726 | * hash for RT to VNI | |
14c1a7bf | 5727 | */ |
d62a17ae | 5728 | void bgp_evpn_init(struct bgp *bgp) |
5729 | { | |
5730 | bgp->vnihash = | |
5731 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
5732 | bgp->import_rt_hash = | |
5733 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5734 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5735 | bgp->vrf_import_rt_hash = |
5736 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5737 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5738 | bgp->vrf_import_rtl = list_new(); |
5739 | bgp->vrf_import_rtl->cmp = | |
5740 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5741 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5742 | bgp->vrf_export_rtl = list_new(); |
5743 | bgp->vrf_export_rtl->cmp = | |
5744 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5745 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5746 | bgp->l2vnis = list_new(); |
64465785 | 5747 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5748 | /* By default Duplicate Address Dection is enabled. |
5749 | * Max-moves (N) 5, detection time (M) 180 | |
5750 | * default action is warning-only | |
5751 | * freeze action permanently freezes address, | |
5752 | * and freeze time (auto-recovery) is disabled. | |
5753 | */ | |
5754 | if (bgp->evpn_info) { | |
5755 | bgp->evpn_info->dup_addr_detect = true; | |
5756 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5757 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5758 | bgp->evpn_info->dad_freeze = false; | |
5759 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5760 | /* Initialize zebra vxlan */ |
5761 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
5762 | /* Enable PIP feature by default for bgp vrf instance */ |
5763 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
5764 | struct bgp *bgp_default; | |
5765 | ||
5766 | bgp->evpn_info->advertise_pip = true; | |
5767 | bgp_default = bgp_get_default(); | |
5768 | if (bgp_default) | |
5769 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
5770 | } | |
85c8d83b | 5771 | } |
fd069644 DS |
5772 | |
5773 | /* Default BUM handling is to do head-end replication. */ | |
5774 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5775 | } |
10ebe1ab MK |
5776 | |
5777 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5778 | { | |
5779 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5780 | } | |
44c69747 LK |
5781 | |
5782 | /* | |
5783 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
5784 | */ | |
5f040085 | 5785 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
5786 | { |
5787 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5788 | ||
5789 | if (!pfx || pfx->family != AF_EVPN) | |
5790 | return 0; | |
5791 | ||
5792 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
5793 | return 0; | |
5794 | ||
5795 | return evp->prefix.prefix_addr.ip_prefix_length; | |
5796 | } | |
7c312383 AD |
5797 | |
5798 | /* | |
5799 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
5800 | */ | |
5a1ae2c2 | 5801 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
5802 | { |
5803 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5804 | ||
5805 | /* | |
e11329ca | 5806 | * EVPN routes should be marked as valid only if the nexthop is |
5807 | * reachable. Only if this happens, the route should be imported | |
5808 | * (into VNI or VRF routing tables) and/or advertised. | |
5809 | * Note: This is currently applied for EVPN type-2, type-3 and | |
5810 | * type-5 routes. It may be tweaked later on for other routes, or | |
5811 | * even removed completely when all routes are handled. | |
7c312383 AD |
5812 | */ |
5813 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 5814 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
5815 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
5816 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
5817 | return true; |
5818 | ||
5819 | return false; | |
5820 | } |