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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 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" |
43 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 44 | #include "bgpd/bgp_encap_types.h" |
45 | #include "bgpd/bgp_debug.h" | |
14454c9f | 46 | #include "bgpd/bgp_errors.h" |
128ea8ab | 47 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 48 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 49 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 50 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 51 | #include "bgpd/bgp_mac.h" |
128ea8ab | 52 | |
53 | /* | |
54 | * Definitions and external declarations. | |
55 | */ | |
56 | extern struct zclient *zclient; | |
57 | ||
58 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 59 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 60 | |
61 | ||
62 | /* | |
63 | * Static function declarations | |
64 | */ | |
4b7e6066 | 65 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 66 | struct bgp_node *rn, |
40381db7 | 67 | struct bgp_path_info **pi); |
d62a17ae | 68 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
14c1a7bf | 69 | |
70 | /* | |
71 | * Private functions. | |
72 | */ | |
73 | ||
50f74cf1 | 74 | /* compare two IPV4 VTEP IPs */ |
ce167790 | 75 | static int evpn_vtep_ip_cmp(void *p1, void *p2) |
50f74cf1 | 76 | { |
77 | const struct in_addr *ip1 = p1; | |
78 | const struct in_addr *ip2 = p2; | |
79 | ||
ce167790 | 80 | return ip1->s_addr - ip2->s_addr; |
50f74cf1 | 81 | } |
82 | ||
83 | /* | |
84 | * Make hash key for ESI. | |
85 | */ | |
86 | static unsigned int esi_hash_keymake(void *p) | |
87 | { | |
88 | struct evpnes *pes = p; | |
89 | const void *pnt = (void *)pes->esi.val; | |
90 | ||
91 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
92 | } | |
93 | ||
94 | /* | |
95 | * Compare two ESIs. | |
96 | */ | |
74df8d6d | 97 | static bool esi_cmp(const void *p1, const void *p2) |
50f74cf1 | 98 | { |
99 | const struct evpnes *pes1 = p1; | |
100 | const struct evpnes *pes2 = p2; | |
101 | ||
102 | if (pes1 == NULL && pes2 == NULL) | |
74df8d6d | 103 | return true; |
50f74cf1 | 104 | |
105 | if (pes1 == NULL || pes2 == NULL) | |
74df8d6d | 106 | return false; |
50f74cf1 | 107 | |
108 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
109 | } | |
110 | ||
14c1a7bf | 111 | /* |
112 | * Make vni hash key. | |
113 | */ | |
d62a17ae | 114 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 115 | { |
d62a17ae | 116 | struct bgpevpn *vpn = p; |
117 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 118 | } |
119 | ||
120 | /* | |
121 | * Comparison function for vni hash | |
122 | */ | |
74df8d6d | 123 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 124 | { |
d62a17ae | 125 | const struct bgpevpn *vpn1 = p1; |
126 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 127 | |
d62a17ae | 128 | if (!vpn1 && !vpn2) |
74df8d6d | 129 | return true; |
d62a17ae | 130 | if (!vpn1 || !vpn2) |
74df8d6d | 131 | return false; |
d62a17ae | 132 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 133 | } |
134 | ||
64465785 DS |
135 | static int vni_list_cmp(void *p1, void *p2) |
136 | { | |
137 | const struct bgpevpn *vpn1 = p1; | |
138 | const struct bgpevpn *vpn2 = p2; | |
139 | ||
140 | return vpn1->vni - vpn2->vni; | |
141 | } | |
142 | ||
10ebe1ab MK |
143 | /* |
144 | * Make vrf import route target hash key. | |
145 | */ | |
146 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
147 | { | |
148 | struct vrf_irt_node *irt = p; | |
149 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
150 | |
151 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
152 | } |
153 | ||
154 | /* | |
155 | * Comparison function for vrf import rt hash | |
156 | */ | |
74df8d6d | 157 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
158 | { |
159 | const struct vrf_irt_node *irt1 = p1; | |
160 | const struct vrf_irt_node *irt2 = p2; | |
161 | ||
162 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 163 | return true; |
10ebe1ab MK |
164 | |
165 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 166 | return false; |
10ebe1ab MK |
167 | |
168 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
169 | } | |
170 | ||
171 | /* | |
f9b8094e | 172 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
173 | */ |
174 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
175 | { | |
5e53dce3 | 176 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
177 | struct vrf_irt_node *irt; |
178 | ||
5e53dce3 T |
179 | bgp_evpn = bgp_get_evpn(); |
180 | if (!bgp_evpn) { | |
e50f7cfd | 181 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 182 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
183 | return NULL; |
184 | } | |
185 | ||
186 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
187 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
188 | |
189 | irt->rt = *rt; | |
190 | irt->vrfs = list_new(); | |
191 | ||
192 | /* Add to hash */ | |
5e53dce3 | 193 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
194 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
195 | return NULL; | |
196 | } | |
197 | ||
198 | return irt; | |
199 | } | |
200 | ||
201 | /* | |
202 | * Free the vrf import rt node | |
203 | */ | |
204 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
205 | { | |
5e53dce3 | 206 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 207 | |
5e53dce3 T |
208 | bgp_evpn = bgp_get_evpn(); |
209 | if (!bgp_evpn) { | |
e50f7cfd | 210 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 211 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
212 | return; |
213 | } | |
214 | ||
5e53dce3 | 215 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 216 | list_delete(&irt->vrfs); |
10ebe1ab MK |
217 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
218 | } | |
219 | ||
220 | /* | |
221 | * Function to lookup Import RT node - used to map a RT to set of | |
222 | * VNIs importing routes with that RT. | |
223 | */ | |
224 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
225 | { | |
5e53dce3 | 226 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
227 | struct vrf_irt_node *irt; |
228 | struct vrf_irt_node tmp; | |
229 | ||
5e53dce3 T |
230 | bgp_evpn = bgp_get_evpn(); |
231 | if (!bgp_evpn) { | |
f9b8094e T |
232 | flog_err( |
233 | EC_BGP_NO_DFLT, | |
234 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
235 | return NULL; |
236 | } | |
237 | ||
238 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
239 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 240 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
241 | return irt; |
242 | } | |
243 | ||
244 | /* | |
245 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
246 | */ | |
996c9314 | 247 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
248 | { |
249 | struct listnode *node = NULL, *nnode = NULL; | |
250 | struct bgp *tmp_bgp_vrf = NULL; | |
251 | ||
252 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
253 | if (tmp_bgp_vrf == bgp_vrf) | |
254 | return 1; | |
255 | } | |
256 | return 0; | |
257 | } | |
258 | ||
14c1a7bf | 259 | /* |
260 | * Make import route target hash key. | |
261 | */ | |
d62a17ae | 262 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 263 | { |
d62a17ae | 264 | struct irt_node *irt = p; |
265 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
266 | |
267 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 268 | } |
269 | ||
270 | /* | |
271 | * Comparison function for import rt hash | |
272 | */ | |
74df8d6d | 273 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 274 | { |
d62a17ae | 275 | const struct irt_node *irt1 = p1; |
276 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 277 | |
d62a17ae | 278 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 279 | return true; |
14c1a7bf | 280 | |
d62a17ae | 281 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 282 | return false; |
14c1a7bf | 283 | |
d62a17ae | 284 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 285 | } |
286 | ||
7724c0a1 | 287 | /* |
128ea8ab | 288 | * Create a new import_rt |
289 | */ | |
d62a17ae | 290 | static struct irt_node *import_rt_new(struct bgp *bgp, |
291 | struct ecommunity_val *rt) | |
128ea8ab | 292 | { |
d62a17ae | 293 | struct irt_node *irt; |
128ea8ab | 294 | |
d62a17ae | 295 | if (!bgp) |
296 | return NULL; | |
128ea8ab | 297 | |
d62a17ae | 298 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 299 | |
d62a17ae | 300 | irt->rt = *rt; |
301 | irt->vnis = list_new(); | |
128ea8ab | 302 | |
d62a17ae | 303 | /* Add to hash */ |
304 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
305 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
306 | return NULL; | |
307 | } | |
128ea8ab | 308 | |
d62a17ae | 309 | return irt; |
128ea8ab | 310 | } |
311 | ||
312 | /* | |
313 | * Free the import rt node | |
7724c0a1 | 314 | */ |
d62a17ae | 315 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 316 | { |
d62a17ae | 317 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 318 | list_delete(&irt->vnis); |
d62a17ae | 319 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 320 | } |
321 | ||
14c1a7bf | 322 | /* |
128ea8ab | 323 | * Function to lookup Import RT node - used to map a RT to set of |
324 | * VNIs importing routes with that RT. | |
325 | */ | |
d62a17ae | 326 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
327 | struct ecommunity_val *rt) | |
128ea8ab | 328 | { |
d62a17ae | 329 | struct irt_node *irt; |
330 | struct irt_node tmp; | |
128ea8ab | 331 | |
d62a17ae | 332 | memset(&tmp, 0, sizeof(struct irt_node)); |
333 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
334 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
335 | return irt; | |
128ea8ab | 336 | } |
337 | ||
338 | /* | |
339 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
340 | */ | |
d62a17ae | 341 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 342 | { |
d62a17ae | 343 | struct listnode *node, *nnode; |
344 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 345 | |
d62a17ae | 346 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
347 | if (tmp_vpn == vpn) | |
348 | return 1; | |
349 | } | |
128ea8ab | 350 | |
d62a17ae | 351 | return 0; |
128ea8ab | 352 | } |
353 | ||
354 | /* | |
355 | * Compare Route Targets. | |
356 | */ | |
d62a17ae | 357 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
358 | struct ecommunity *ecom2) | |
128ea8ab | 359 | { |
d62a17ae | 360 | if (ecom1 && !ecom2) |
361 | return -1; | |
128ea8ab | 362 | |
d62a17ae | 363 | if (!ecom1 && ecom2) |
364 | return 1; | |
128ea8ab | 365 | |
d62a17ae | 366 | if (!ecom1 && !ecom2) |
367 | return 0; | |
128ea8ab | 368 | |
d62a17ae | 369 | if (ecom1->str && !ecom2->str) |
370 | return -1; | |
128ea8ab | 371 | |
d62a17ae | 372 | if (!ecom1->str && ecom2->str) |
373 | return 1; | |
128ea8ab | 374 | |
d62a17ae | 375 | if (!ecom1->str && !ecom2->str) |
376 | return 0; | |
128ea8ab | 377 | |
d62a17ae | 378 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 379 | } |
380 | ||
987d8198 DS |
381 | static void evpn_xxport_delete_ecomm(void *val) |
382 | { | |
383 | struct ecommunity *ecomm = val; | |
384 | ecommunity_free(&ecomm); | |
385 | } | |
386 | ||
128ea8ab | 387 | /* |
388 | * Mask off global-admin field of specified extended community (RT), | |
389 | * just retain the local-admin field. | |
390 | */ | |
d62a17ae | 391 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
392 | struct ecommunity_val *src) | |
128ea8ab | 393 | { |
d7c0a89a | 394 | uint8_t type; |
128ea8ab | 395 | |
d62a17ae | 396 | type = src->val[0]; |
397 | dst->val[0] = 0; | |
398 | if (type == ECOMMUNITY_ENCODE_AS) { | |
399 | dst->val[2] = dst->val[3] = 0; | |
400 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
401 | || type == ECOMMUNITY_ENCODE_IP) { | |
402 | dst->val[2] = dst->val[3] = 0; | |
403 | dst->val[4] = dst->val[5] = 0; | |
404 | } | |
128ea8ab | 405 | } |
406 | ||
10ebe1ab MK |
407 | /* |
408 | * Map one RT to specified VRF. | |
409 | * bgp_vrf = BGP vrf instance | |
410 | */ | |
996c9314 | 411 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
412 | { |
413 | struct vrf_irt_node *irt = NULL; | |
414 | struct ecommunity_val eval_tmp; | |
415 | ||
416 | /* If using "automatic" RT, | |
417 | * we only care about the local-admin sub-field. | |
418 | * This is to facilitate using L3VNI(VRF-VNI) | |
419 | * as the RT for EBGP peering too. | |
420 | */ | |
421 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 422 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
423 | mask_ecom_global_admin(&eval_tmp, eval); |
424 | ||
425 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
426 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
427 | /* Already mapped. */ | |
428 | return; | |
10ebe1ab | 429 | |
e066d6d0 | 430 | if (!irt) |
10ebe1ab | 431 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
432 | |
433 | /* Add VRF to the list for this RT. */ | |
434 | listnode_add(irt->vrfs, bgp_vrf); | |
435 | } | |
436 | ||
437 | /* | |
438 | * Unmap specified VRF from specified RT. If there are no other | |
439 | * VRFs for this RT, then the RT hash is deleted. | |
440 | * bgp_vrf: BGP VRF specific instance | |
441 | */ | |
996c9314 | 442 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
443 | { |
444 | /* Delete VRF from list for this RT. */ | |
445 | listnode_delete(irt->vrfs, bgp_vrf); | |
446 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
447 | vrf_import_rt_free(irt); |
448 | } | |
449 | } | |
450 | ||
128ea8ab | 451 | /* |
452 | * Map one RT to specified VNI. | |
14c1a7bf | 453 | */ |
d62a17ae | 454 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
455 | struct ecommunity_val *eval) | |
128ea8ab | 456 | { |
d62a17ae | 457 | struct irt_node *irt; |
458 | struct ecommunity_val eval_tmp; | |
128ea8ab | 459 | |
d62a17ae | 460 | /* If using "automatic" RT, we only care about the local-admin |
461 | * sub-field. | |
462 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
463 | */ | |
464 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
465 | if (!is_import_rt_configured(vpn)) | |
466 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 467 | |
d62a17ae | 468 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 469 | if (irt) |
d62a17ae | 470 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
471 | /* Already mapped. */ | |
472 | return; | |
128ea8ab | 473 | |
d62a17ae | 474 | if (!irt) { |
475 | irt = import_rt_new(bgp, &eval_tmp); | |
476 | assert(irt); | |
477 | } | |
128ea8ab | 478 | |
d62a17ae | 479 | /* Add VNI to the hash list for this RT. */ |
480 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 481 | } |
482 | ||
483 | /* | |
484 | * Unmap specified VNI from specified RT. If there are no other | |
485 | * VNIs for this RT, then the RT hash is deleted. | |
486 | */ | |
d62a17ae | 487 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
488 | struct irt_node *irt) | |
14c1a7bf | 489 | { |
d62a17ae | 490 | /* Delete VNI from hash list for this RT. */ |
491 | listnode_delete(irt->vnis, vpn); | |
492 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 493 | import_rt_free(bgp, irt); |
494 | } | |
14c1a7bf | 495 | } |
496 | ||
128ea8ab | 497 | /* |
498 | * Create RT extended community automatically from passed information: | |
499 | * of the form AS:VNI. | |
500 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
501 | * the need is to get a RT value that will be unique across different | |
502 | * VNIs but the same across routers (in the same AS) for a particular | |
503 | * VNI. | |
504 | */ | |
c581d8b0 | 505 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 506 | { |
d62a17ae | 507 | struct ecommunity_val eval; |
508 | struct ecommunity *ecomadd; | |
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(); |
515 | ecommunity_add_val(ecomadd, &eval); | |
516 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 517 | } |
14c1a7bf | 518 | |
519 | /* | |
128ea8ab | 520 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
521 | * creation of a VNI. | |
522 | */ | |
d62a17ae | 523 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 524 | { |
d62a17ae | 525 | bgp_evpn_derive_auto_rd(bgp, vpn); |
526 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
527 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 528 | } |
529 | ||
1ec31309 | 530 | /* |
531 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
532 | */ | |
533 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
534 | { | |
535 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
536 | return; | |
537 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
538 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
539 | } | |
540 | ||
128ea8ab | 541 | /* |
542 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 543 | */ |
d62a17ae | 544 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
545 | struct prefix_evpn *p, | |
546 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 547 | uint8_t flags, uint32_t seq) |
d62a17ae | 548 | { |
549 | struct stream *s; | |
550 | int ipa_len; | |
551 | char buf1[ETHER_ADDR_STRLEN]; | |
552 | char buf2[INET6_ADDRSTRLEN]; | |
553 | char buf3[INET6_ADDRSTRLEN]; | |
554 | ||
555 | /* Check socket. */ | |
556 | if (!zclient || zclient->sock < 0) | |
557 | return 0; | |
558 | ||
559 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
560 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
561 | if (BGP_DEBUG(zebra, ZEBRA)) | |
562 | zlog_debug("%s: No zebra instance to talk to, not installing remote macip", | |
563 | __PRETTY_FUNCTION__); | |
d62a17ae | 564 | return 0; |
bb4ef1ae | 565 | } |
d62a17ae | 566 | s = zclient->obuf; |
567 | stream_reset(s); | |
568 | ||
996c9314 LB |
569 | zclient_create_header( |
570 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
571 | bgp->vrf_id); | |
d62a17ae | 572 | stream_putl(s, vpn->vni); |
3714a385 | 573 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 574 | /* IP address length and IP address, if any. */ |
3714a385 | 575 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 576 | stream_putl(s, 0); |
577 | else { | |
3714a385 | 578 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 579 | : IPV6_MAX_BYTELEN; |
580 | stream_putl(s, ipa_len); | |
3714a385 | 581 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 582 | } |
583 | stream_put_in_addr(s, &remote_vtep_ip); | |
584 | ||
ead40654 | 585 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 586 | /* Also TX the sequence number of the best route. */ |
587 | if (add) { | |
ead40654 | 588 | stream_putc(s, flags); |
f07e1c99 | 589 | stream_putl(s, seq); |
590 | } | |
d62a17ae | 591 | |
592 | stream_putw_at(s, 0, stream_get_endp(s)); | |
593 | ||
594 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 595 | zlog_debug( |
f07e1c99 | 596 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 597 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 598 | prefix_mac2str(&p->prefix.macip_addr.mac, |
599 | buf1, sizeof(buf1)), | |
600 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 601 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
602 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
603 | sizeof(buf2))); | |
d62a17ae | 604 | |
605 | return zclient_send_message(zclient); | |
7ef5a232 | 606 | } |
b18825eb | 607 | |
128ea8ab | 608 | /* |
609 | * Add (update) or delete remote VTEP from zebra. | |
610 | */ | |
d62a17ae | 611 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
b16dd019 AK |
612 | struct prefix_evpn *p, |
613 | int flood_control, int add) | |
128ea8ab | 614 | { |
d62a17ae | 615 | struct stream *s; |
128ea8ab | 616 | |
d62a17ae | 617 | /* Check socket. */ |
618 | if (!zclient || zclient->sock < 0) | |
619 | return 0; | |
128ea8ab | 620 | |
d62a17ae | 621 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
622 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
623 | if (BGP_DEBUG(zebra, ZEBRA)) | |
624 | zlog_debug("%s: No zebra instance to talk to, not installing remote vtep", | |
625 | __PRETTY_FUNCTION__); | |
d62a17ae | 626 | return 0; |
bb4ef1ae | 627 | } |
128ea8ab | 628 | |
d62a17ae | 629 | s = zclient->obuf; |
630 | stream_reset(s); | |
128ea8ab | 631 | |
996c9314 LB |
632 | zclient_create_header( |
633 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
634 | bgp->vrf_id); | |
d62a17ae | 635 | stream_putl(s, vpn->vni); |
3714a385 | 636 | if (is_evpn_prefix_ipaddr_v4(p)) |
637 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
638 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 639 | flog_err( |
e50f7cfd | 640 | EC_BGP_VTEP_INVALID, |
d62a17ae | 641 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
642 | add ? "ADD" : "DEL", vpn->vni); | |
643 | return -1; | |
644 | } | |
b16dd019 | 645 | stream_putl(s, flood_control); |
128ea8ab | 646 | |
d62a17ae | 647 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 648 | |
d62a17ae | 649 | if (bgp_debug_zebra(NULL)) |
650 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
651 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 652 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 653 | |
d62a17ae | 654 | return zclient_send_message(zclient); |
128ea8ab | 655 | } |
656 | ||
50f74cf1 | 657 | /* |
658 | * Build extended community for EVPN ES (type-4) route | |
659 | */ | |
660 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
661 | struct attr *attr) | |
662 | { | |
663 | struct ecommunity ecom_encap; | |
664 | struct ecommunity ecom_es_rt; | |
665 | struct ecommunity_val eval; | |
666 | struct ecommunity_val eval_es_rt; | |
667 | bgp_encap_types tnl_type; | |
668 | struct ethaddr mac; | |
669 | ||
670 | /* Encap */ | |
671 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
672 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
673 | encode_encap_extcomm(tnl_type, &eval); | |
674 | ecom_encap.size = 1; | |
675 | ecom_encap.val = (uint8_t *)eval.val; | |
676 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
677 | ||
678 | /* ES import RT */ | |
679 | memset(&mac, 0, sizeof(struct ethaddr)); | |
680 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
681 | es_get_system_mac(&es->esi, &mac); | |
682 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
683 | ecom_es_rt.size = 1; | |
684 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
685 | attr->ecommunity = | |
686 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
687 | ||
688 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
689 | } | |
690 | ||
342dd0c6 | 691 | /* |
692 | * Build extended communities for EVPN prefix route. | |
693 | */ | |
694 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
695 | struct attr *attr) | |
696 | { | |
697 | struct ecommunity ecom_encap; | |
698 | struct ecommunity ecom_rmac; | |
699 | struct ecommunity_val eval; | |
700 | struct ecommunity_val eval_rmac; | |
701 | bgp_encap_types tnl_type; | |
702 | struct listnode *node, *nnode; | |
703 | struct ecommunity *ecom; | |
704 | struct list *vrf_export_rtl = NULL; | |
705 | ||
706 | /* Encap */ | |
707 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
708 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
709 | encode_encap_extcomm(tnl_type, &eval); | |
710 | ecom_encap.size = 1; | |
d7c0a89a | 711 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 712 | |
713 | /* Add Encap */ | |
714 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
715 | ||
716 | /* Add the export RTs for L3VNI/VRF */ | |
717 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
718 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
719 | attr->ecommunity = | |
720 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 721 | |
722 | /* add the router mac extended community */ | |
723 | if (!is_zero_mac(&attr->rmac)) { | |
724 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
725 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
726 | ecom_rmac.size = 1; | |
727 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
728 | attr->ecommunity = |
729 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 730 | } |
731 | ||
732 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
733 | } | |
734 | ||
128ea8ab | 735 | /* |
1ec31309 | 736 | * Build extended communities for EVPN route. |
737 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
738 | * and ENCAP extended communities are applicable for all routes. | |
739 | * The default gateway extended community and MAC mobility (sticky) extended | |
740 | * community are added as needed based on passed settings - only for type-2 | |
741 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
742 | * added, if present, based on passed settings - only for non-link-local | |
743 | * type-2 routes. | |
128ea8ab | 744 | */ |
7ec156a9 | 745 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 746 | int add_l3_ecomm) |
128ea8ab | 747 | { |
d62a17ae | 748 | struct ecommunity ecom_encap; |
749 | struct ecommunity ecom_sticky; | |
ead40654 | 750 | struct ecommunity ecom_default_gw; |
bc59a672 | 751 | struct ecommunity ecom_rmac; |
68e33151 | 752 | struct ecommunity ecom_na; |
d62a17ae | 753 | struct ecommunity_val eval; |
754 | struct ecommunity_val eval_sticky; | |
ead40654 | 755 | struct ecommunity_val eval_default_gw; |
bc59a672 | 756 | struct ecommunity_val eval_rmac; |
68e33151 CS |
757 | struct ecommunity_val eval_na; |
758 | ||
d62a17ae | 759 | bgp_encap_types tnl_type; |
760 | struct listnode *node, *nnode; | |
761 | struct ecommunity *ecom; | |
d7c0a89a | 762 | uint32_t seqnum; |
7a3e76f1 | 763 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 764 | |
d62a17ae | 765 | /* Encap */ |
766 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
767 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
768 | encode_encap_extcomm(tnl_type, &eval); | |
769 | ecom_encap.size = 1; | |
d7c0a89a | 770 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 771 | |
d62a17ae | 772 | /* Add Encap */ |
773 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 774 | |
7a3e76f1 | 775 | /* Add the export RTs for L2VNI */ |
d62a17ae | 776 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
777 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 778 | |
1ec31309 | 779 | /* Add the export RTs for L3VNI if told to - caller determines |
780 | * when this should be done. | |
523cafc4 | 781 | */ |
1ec31309 | 782 | if (add_l3_ecomm) { |
7ec156a9 MK |
783 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
784 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
785 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
786 | ecom)) | |
996c9314 LB |
787 | attr->ecommunity = ecommunity_merge( |
788 | attr->ecommunity, ecom); | |
7ec156a9 | 789 | } |
f1f8b53c | 790 | } |
7a3e76f1 | 791 | |
1ec31309 | 792 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 793 | if (attr->sticky) { |
794 | seqnum = 0; | |
795 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
796 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
797 | ecom_sticky.size = 1; | |
d7c0a89a | 798 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 799 | attr->ecommunity = |
800 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
801 | } | |
c85c03c7 | 802 | |
1ec31309 | 803 | /* Add RMAC, if told to. */ |
804 | if (add_l3_ecomm) { | |
bc59a672 MK |
805 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
806 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
807 | ecom_rmac.size = 1; | |
808 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
809 | attr->ecommunity = |
810 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
811 | } |
812 | ||
1ec31309 | 813 | /* Add default gateway, if needed. */ |
ead40654 MK |
814 | if (attr->default_gw) { |
815 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
816 | encode_default_gw_extcomm(&eval_default_gw); | |
817 | ecom_default_gw.size = 1; | |
818 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
819 | attr->ecommunity = |
820 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
821 | } |
822 | ||
68e33151 CS |
823 | if (attr->router_flag) { |
824 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
825 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
826 | ecom_na.size = 1; | |
827 | ecom_na.val = (uint8_t *)eval_na.val; | |
828 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
829 | &ecom_na); | |
830 | } | |
831 | ||
d62a17ae | 832 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 833 | } |
834 | ||
835 | /* | |
836 | * Add MAC mobility extended community to attribute. | |
837 | */ | |
d7c0a89a | 838 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 839 | { |
840 | struct ecommunity ecom_tmp; | |
841 | struct ecommunity_val eval; | |
d7c0a89a | 842 | uint8_t *ecom_val_ptr; |
d62a17ae | 843 | int i; |
d7c0a89a | 844 | uint8_t *pnt; |
d62a17ae | 845 | int type = 0; |
846 | int sub_type = 0; | |
847 | ||
848 | /* Build MM */ | |
849 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
850 | ||
851 | /* Find current MM ecommunity */ | |
421bb26a | 852 | ecom_val_ptr = NULL; |
d62a17ae | 853 | |
854 | if (attr->ecommunity) { | |
855 | for (i = 0; i < attr->ecommunity->size; i++) { | |
856 | pnt = attr->ecommunity->val + (i * 8); | |
857 | type = *pnt++; | |
858 | sub_type = *pnt++; | |
859 | ||
860 | if (type == ECOMMUNITY_ENCODE_EVPN | |
861 | && sub_type | |
862 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
863 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
864 | + (i * 8)); | |
d62a17ae | 865 | break; |
866 | } | |
867 | } | |
868 | } | |
869 | ||
870 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
871 | if (ecom_val_ptr) { |
872 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 873 | } |
874 | /* Add MM to existing */ | |
875 | else { | |
876 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
877 | ecom_tmp.size = 1; | |
d7c0a89a | 878 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 879 | |
f9a78910 DS |
880 | if (attr->ecommunity) |
881 | attr->ecommunity = | |
882 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
883 | else | |
884 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 885 | } |
128ea8ab | 886 | } |
887 | ||
888 | /* Install EVPN route into zebra. */ | |
d62a17ae | 889 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
d594a14c | 890 | struct prefix_evpn *p, struct bgp_path_info *pi) |
128ea8ab | 891 | { |
d62a17ae | 892 | int ret; |
d594a14c | 893 | uint8_t flags; |
b16dd019 | 894 | int flood_control; |
128ea8ab | 895 | |
d594a14c AK |
896 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
897 | flags = 0; | |
898 | if (pi->attr->sticky) | |
899 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
900 | if (pi->attr->default_gw) | |
901 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
902 | if (is_evpn_prefix_ipaddr_v6(p) && | |
903 | pi->attr->router_flag) | |
904 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
905 | ret = bgp_zebra_send_remote_macip( | |
906 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
907 | mac_mobility_seqnum(pi->attr)); | |
908 | } else { | |
b16dd019 AK |
909 | switch (pi->attr->pmsi_tnl_type) { |
910 | case PMSI_TNLTYPE_INGR_REPL: | |
911 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
912 | break; | |
913 | ||
914 | case PMSI_TNLTYPE_PIM_SM: | |
915 | flood_control = VXLAN_FLOOD_PIM_SM; | |
916 | break; | |
917 | ||
918 | default: | |
919 | flood_control = VXLAN_FLOOD_DISABLED; | |
920 | break; | |
921 | } | |
922 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 923 | } |
128ea8ab | 924 | |
d62a17ae | 925 | return ret; |
128ea8ab | 926 | } |
927 | ||
928 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 929 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
930 | struct prefix_evpn *p, | |
931 | struct in_addr remote_vtep_ip) | |
128ea8ab | 932 | { |
d62a17ae | 933 | int ret; |
128ea8ab | 934 | |
d62a17ae | 935 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
936 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 937 | 0, 0, 0); |
d62a17ae | 938 | else |
b16dd019 AK |
939 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
940 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 941 | |
d62a17ae | 942 | return ret; |
128ea8ab | 943 | } |
944 | ||
945 | /* | |
946 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
947 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
948 | * from peers. | |
949 | */ | |
d62a17ae | 950 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
951 | struct bgp_node *rn, | |
4b7e6066 | 952 | struct bgp_path_info *old_local) |
128ea8ab | 953 | { |
d62a17ae | 954 | struct bgp_node *global_rn; |
40381db7 | 955 | struct bgp_path_info *pi; |
d62a17ae | 956 | afi_t afi = AFI_L2VPN; |
957 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 958 | |
d62a17ae | 959 | /* Locate route node in the global EVPN routing table. Note that |
960 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
961 | * L3VPN routes. | |
962 | */ | |
963 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
964 | (struct prefix *)&rn->p, &vpn->prd); | |
965 | if (global_rn) { | |
966 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 967 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 968 | |
d62a17ae | 969 | /* Schedule for processing - withdraws to peers happen from |
970 | * this table. | |
971 | */ | |
40381db7 | 972 | if (pi) |
d62a17ae | 973 | bgp_process(bgp, global_rn, afi, safi); |
974 | bgp_unlock_node(global_rn); | |
975 | } | |
128ea8ab | 976 | |
d62a17ae | 977 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 978 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 979 | } |
980 | ||
50f74cf1 | 981 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
982 | { | |
983 | struct in_addr *ip; | |
984 | ||
985 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 986 | |
987 | ip->s_addr = vtep.s_addr; | |
988 | return ip; | |
989 | } | |
990 | ||
991 | static void es_vtep_free(struct in_addr *ip) | |
992 | { | |
993 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
994 | } | |
995 | ||
996 | /* check if VTEP is already part of the list */ | |
997 | static int is_vtep_present_in_list(struct list *list, | |
998 | struct in_addr vtep) | |
999 | { | |
1000 | struct listnode *node = NULL; | |
1001 | struct in_addr *tmp; | |
1002 | ||
1003 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
1004 | if (tmp->s_addr == vtep.s_addr) | |
1005 | return 1; | |
1006 | } | |
1007 | return 0; | |
1008 | } | |
1009 | ||
2bb9eff4 DS |
1010 | /* |
1011 | * Best path for ES route was changed, | |
1012 | * update the list of VTEPs for this ES | |
1013 | */ | |
50f74cf1 | 1014 | static int evpn_es_install_vtep(struct bgp *bgp, |
1015 | struct evpnes *es, | |
1016 | struct prefix_evpn *p, | |
1017 | struct in_addr rvtep) | |
1018 | { | |
1019 | struct in_addr *vtep_ip; | |
1020 | ||
1021 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1022 | return 0; | |
1023 | ||
1024 | ||
1025 | vtep_ip = es_vtep_new(rvtep); | |
1026 | if (vtep_ip) | |
1027 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
2bb9eff4 DS |
1031 | /* |
1032 | * Best path for ES route was changed, | |
1033 | * update the list of VTEPs for this ES | |
1034 | */ | |
50f74cf1 | 1035 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1036 | struct evpnes *es, | |
1037 | struct prefix_evpn *p, | |
1038 | struct in_addr rvtep) | |
1039 | { | |
1040 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1041 | struct in_addr *tmp; | |
1042 | ||
1043 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1044 | if (tmp->s_addr == rvtep.s_addr) { | |
1045 | es_vtep_free(tmp); | |
1046 | node_to_del = node; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | if (node_to_del) | |
1051 | list_delete_node(es->vtep_list, node_to_del); | |
1052 | ||
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | /* | |
1057 | * Calculate the best path for a ES(type-4) route. | |
1058 | */ | |
1059 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1060 | struct evpnes *es, | |
1061 | struct bgp_node *rn) | |
1062 | { | |
1063 | int ret = 0; | |
1064 | afi_t afi = AFI_L2VPN; | |
1065 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1066 | struct bgp_path_info *old_select; /* old best */ |
1067 | struct bgp_path_info *new_select; /* new best */ | |
1068 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1069 | |
1070 | /* Compute the best path. */ | |
1071 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1072 | &old_and_new, afi, safi); | |
1073 | old_select = old_and_new.old; | |
1074 | new_select = old_and_new.new; | |
1075 | ||
2bb9eff4 DS |
1076 | /* |
1077 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1078 | * updated |
1079 | */ | |
1080 | if (old_select && old_select == new_select | |
1081 | && old_select->type == ZEBRA_ROUTE_BGP | |
1082 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1083 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1084 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1085 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
50f74cf1 | 1086 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1087 | ret = evpn_es_install_vtep(bgp, es, | |
1088 | (struct prefix_evpn *)&rn->p, | |
1089 | old_select->attr->nexthop); | |
1090 | } | |
1defdda8 | 1091 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1092 | bgp_zebra_clear_route_change_flags(rn); |
1093 | return ret; | |
1094 | } | |
1095 | ||
1096 | /* If the user did a "clear" this flag will be set */ | |
1097 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1098 | ||
2bb9eff4 DS |
1099 | /* |
1100 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1101 | * into the zebra RIB. |
1102 | */ | |
1103 | if (old_select || new_select) | |
1104 | bgp_bump_version(rn); | |
1105 | ||
1106 | if (old_select) | |
18ee8310 | 1107 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1108 | if (new_select) { |
18ee8310 DS |
1109 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1110 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1111 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1112 | } |
1113 | ||
1114 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1115 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1116 | ret = evpn_es_install_vtep(bgp, es, | |
1117 | (struct prefix_evpn *)&rn->p, | |
1118 | new_select->attr->nexthop); | |
1119 | } else { | |
1120 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1121 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1122 | ret = evpn_es_uninstall_vtep( |
1123 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1124 | old_select->attr->nexthop); | |
50f74cf1 | 1125 | } |
1126 | ||
1127 | /* Clear any route change flags. */ | |
1128 | bgp_zebra_clear_route_change_flags(rn); | |
1129 | ||
18ee8310 | 1130 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1131 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1132 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1133 | |
1134 | return ret; | |
1135 | } | |
1136 | ||
128ea8ab | 1137 | /* |
1138 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1139 | * if appropriate. | |
1140 | */ | |
d62a17ae | 1141 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1142 | struct bgp_node *rn) | |
1143 | { | |
4b7e6066 DS |
1144 | struct bgp_path_info *old_select, *new_select; |
1145 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1146 | afi_t afi = AFI_L2VPN; |
1147 | safi_t safi = SAFI_EVPN; | |
1148 | int ret = 0; | |
1149 | ||
1150 | /* Compute the best path. */ | |
1151 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1152 | afi, safi); | |
1153 | old_select = old_and_new.old; | |
1154 | new_select = old_and_new.new; | |
1155 | ||
1156 | /* If the best path hasn't changed - see if there is still something to | |
1157 | * update | |
1158 | * to zebra RIB. | |
1159 | */ | |
1160 | if (old_select && old_select == new_select | |
1161 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1162 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1163 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1164 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1165 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
d594a14c | 1166 | if (bgp_zebra_has_route_changed(rn, old_select)) |
996c9314 LB |
1167 | ret = evpn_zebra_install( |
1168 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
d594a14c | 1169 | old_select); |
1defdda8 | 1170 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1171 | bgp_zebra_clear_route_change_flags(rn); |
1172 | return ret; | |
1173 | } | |
1174 | ||
1175 | /* If the user did a "clear" this flag will be set */ | |
1176 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1177 | ||
1178 | /* bestpath has changed; update relevant fields and install or uninstall | |
1179 | * into the zebra RIB. | |
1180 | */ | |
1181 | if (old_select || new_select) | |
1182 | bgp_bump_version(rn); | |
1183 | ||
1184 | if (old_select) | |
18ee8310 | 1185 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1186 | if (new_select) { |
18ee8310 DS |
1187 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1188 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1189 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1190 | } |
1191 | ||
1192 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1193 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
d62a17ae | 1194 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
d594a14c AK |
1195 | new_select); |
1196 | ||
d62a17ae | 1197 | /* If an old best existed and it was a "local" route, the only |
1198 | * reason | |
1199 | * it would be supplanted is due to MAC mobility procedures. So, | |
1200 | * we | |
1201 | * need to do an implicit delete and withdraw that route from | |
1202 | * peers. | |
1203 | */ | |
1204 | if (old_select && old_select->peer == bgp->peer_self | |
1205 | && old_select->type == ZEBRA_ROUTE_BGP | |
1206 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1207 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1208 | } else { | |
1209 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1210 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1211 | ret = evpn_zebra_uninstall(bgp, vpn, |
1212 | (struct prefix_evpn *)&rn->p, | |
1213 | old_select->attr->nexthop); | |
1214 | } | |
1215 | ||
1216 | /* Clear any route change flags. */ | |
1217 | bgp_zebra_clear_route_change_flags(rn); | |
1218 | ||
18ee8310 | 1219 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1220 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1221 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1222 | |
1223 | return ret; | |
128ea8ab | 1224 | } |
1225 | ||
ead40654 MK |
1226 | /* |
1227 | * Return true if the local ri for this rn is of type gateway mac | |
1228 | */ | |
1229 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1230 | { | |
40381db7 DS |
1231 | struct bgp_path_info *tmp_pi = NULL; |
1232 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1233 | |
40381db7 | 1234 | local_pi = NULL; |
6f94b685 DS |
1235 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1236 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1237 | if (tmp_pi->peer == bgp->peer_self |
1238 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1239 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1240 | local_pi = tmp_pi; | |
ead40654 MK |
1241 | } |
1242 | ||
40381db7 | 1243 | if (!local_pi) |
ead40654 MK |
1244 | return 0; |
1245 | ||
40381db7 | 1246 | return local_pi->attr->default_gw; |
ead40654 MK |
1247 | } |
1248 | ||
c85c03c7 | 1249 | |
1250 | /* | |
1251 | * Return true if the local ri for this rn has sticky set | |
1252 | */ | |
d62a17ae | 1253 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1254 | { |
40381db7 DS |
1255 | struct bgp_path_info *tmp_pi; |
1256 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1257 | |
40381db7 | 1258 | local_pi = NULL; |
6f94b685 DS |
1259 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1260 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1261 | if (tmp_pi->peer == bgp->peer_self |
1262 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1263 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1264 | local_pi = tmp_pi; | |
d62a17ae | 1265 | } |
c85c03c7 | 1266 | |
40381db7 | 1267 | if (!local_pi) |
d62a17ae | 1268 | return 0; |
c85c03c7 | 1269 | |
40381db7 | 1270 | return local_pi->attr->sticky; |
c85c03c7 | 1271 | } |
1272 | ||
50f74cf1 | 1273 | /* |
1274 | * create or update EVPN type4 route entry. | |
1275 | * This could be in the ES table or the global table. | |
1276 | * TODO: handle remote ES (type4) routes as well | |
1277 | */ | |
4b7e6066 | 1278 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1279 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1280 | struct bgp_node *rn, struct attr *attr, |
1281 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1282 | int *route_changed) |
1283 | { | |
1284 | char buf[ESI_STR_LEN]; | |
1285 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1286 | struct bgp_path_info *tmp_pi = NULL; |
1287 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1288 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1289 | struct attr *attr_new = NULL; |
1290 | struct prefix_evpn *evp = NULL; | |
1291 | ||
1292 | *ri = NULL; | |
1293 | *route_changed = 1; | |
1294 | evp = (struct prefix_evpn *)&rn->p; | |
1295 | ||
1296 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1297 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1298 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1299 | if (tmp_pi->peer == bgp->peer_self |
1300 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1301 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1302 | local_pi = tmp_pi; | |
1303 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1304 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1305 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1306 | remote_pi = tmp_pi; | |
50f74cf1 | 1307 | } |
1308 | ||
6f94b685 | 1309 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1310 | * An ES route has esi + vtep_ip as the key, |
1311 | * We shouldn't see the same route from any other vtep. | |
1312 | */ | |
40381db7 | 1313 | if (remote_pi) { |
af4c2728 | 1314 | flog_err( |
e50f7cfd | 1315 | EC_BGP_ES_INVALID, |
14454c9f DS |
1316 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1317 | bgp->vrf_id, | |
1318 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1319 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1320 | return -1; |
1321 | } | |
1322 | ||
40381db7 | 1323 | if (!local_pi && !add) |
50f74cf1 | 1324 | return 0; |
1325 | ||
1326 | /* create or update the entry */ | |
40381db7 | 1327 | if (!local_pi) { |
50f74cf1 | 1328 | |
1329 | /* Add or update attribute to hash */ | |
1330 | attr_new = bgp_attr_intern(attr); | |
1331 | ||
1332 | /* Create new route with its attribute. */ | |
40381db7 DS |
1333 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1334 | bgp->peer_self, attr_new, rn); | |
1335 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1336 | |
1337 | /* add the newly created path to the route-node */ | |
40381db7 | 1338 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1339 | } else { |
40381db7 DS |
1340 | tmp_pi = local_pi; |
1341 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1342 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1343 | *route_changed = 0; |
1344 | else { | |
1345 | /* The attribute has changed. | |
1346 | * Add (or update) attribute to hash. */ | |
1347 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1348 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1349 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1350 | |
1351 | /* Restore route, if needed. */ | |
40381db7 DS |
1352 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1353 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1354 | |
1355 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1356 | bgp_attr_unintern(&tmp_pi->attr); |
1357 | tmp_pi->attr = attr_new; | |
1358 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1359 | } |
1360 | } | |
1361 | ||
1362 | /* Return back the route entry. */ | |
40381db7 | 1363 | *ri = tmp_pi; |
50f74cf1 | 1364 | return 0; |
1365 | } | |
1366 | ||
1367 | /* update evpn es (type-4) route */ | |
1368 | static int update_evpn_type4_route(struct bgp *bgp, | |
1369 | struct evpnes *es, | |
1370 | struct prefix_evpn *p) | |
1371 | { | |
1372 | int ret = 0; | |
1373 | int route_changed = 0; | |
1374 | char buf[ESI_STR_LEN]; | |
1375 | char buf1[INET6_ADDRSTRLEN]; | |
1376 | afi_t afi = AFI_L2VPN; | |
1377 | safi_t safi = SAFI_EVPN; | |
1378 | struct attr attr; | |
1379 | struct attr *attr_new = NULL; | |
1380 | struct bgp_node *rn = NULL; | |
40381db7 | 1381 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1382 | |
1383 | memset(&attr, 0, sizeof(struct attr)); | |
1384 | ||
1385 | /* Build path-attribute for this route. */ | |
1386 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1387 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1388 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1389 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1390 | ||
1391 | /* Set up extended community. */ | |
1392 | build_evpn_type4_route_extcomm(es, &attr); | |
1393 | ||
1394 | /* First, create (or fetch) route node within the ESI. */ | |
1395 | /* NOTE: There is no RD here. */ | |
1396 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1397 | ||
1398 | /* Create or update route entry. */ | |
40381db7 DS |
1399 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1400 | &pi, &route_changed); | |
50f74cf1 | 1401 | if (ret != 0) { |
1c50c1c0 QY |
1402 | flog_err(EC_BGP_ES_INVALID, |
1403 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1404 | bgp->vrf_id, | |
1405 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1406 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1407 | } |
1408 | ||
40381db7 DS |
1409 | assert(pi); |
1410 | attr_new = pi->attr; | |
50f74cf1 | 1411 | |
1412 | /* Perform route selection; | |
1413 | * this is just to set the flags correctly | |
1414 | * as local route in the ES always wins. | |
1415 | */ | |
1416 | evpn_es_route_select_install(bgp, es, rn); | |
1417 | bgp_unlock_node(rn); | |
1418 | ||
1419 | /* If this is a new route or some attribute has changed, export the | |
1420 | * route to the global table. The route will be advertised to peers | |
1421 | * from there. Note that this table is a 2-level tree (RD-level + | |
1422 | * Prefix-level) similar to L3VPN routes. | |
1423 | */ | |
1424 | if (route_changed) { | |
40381db7 | 1425 | struct bgp_path_info *global_pi; |
50f74cf1 | 1426 | |
1427 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1428 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1429 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1430 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1431 | |
1432 | /* Schedule for processing and unlock node. */ | |
1433 | bgp_process(bgp, rn, afi, safi); | |
1434 | bgp_unlock_node(rn); | |
1435 | } | |
1436 | ||
1437 | /* Unintern temporary. */ | |
1438 | aspath_unintern(&attr.aspath); | |
1439 | return 0; | |
1440 | } | |
1441 | ||
5e53dce3 | 1442 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1443 | struct bgp *bgp_vrf, afi_t afi, |
1444 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1445 | struct attr *attr, int *route_changed) |
342dd0c6 | 1446 | { |
1447 | struct attr *attr_new = NULL; | |
40381db7 | 1448 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1449 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1450 | struct bgp_path_info *local_pi = NULL; |
1451 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1452 | |
5424b7ba | 1453 | *route_changed = 0; |
342dd0c6 | 1454 | /* locate the local route entry if any */ |
6f94b685 DS |
1455 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1456 | tmp_pi = tmp_pi->next) { | |
5e53dce3 | 1457 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1458 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1459 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1460 | local_pi = tmp_pi; | |
342dd0c6 | 1461 | } |
1462 | ||
2bb9eff4 | 1463 | /* |
0437e105 | 1464 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1465 | * Otherwise see if route attr has changed |
523cafc4 | 1466 | */ |
40381db7 | 1467 | if (!local_pi) { |
342dd0c6 | 1468 | |
5424b7ba MK |
1469 | /* route has changed as this is the first entry */ |
1470 | *route_changed = 1; | |
1471 | ||
342dd0c6 | 1472 | /* Add (or update) attribute to hash. */ |
1473 | attr_new = bgp_attr_intern(attr); | |
1474 | ||
1475 | /* create the route info from attribute */ | |
40381db7 | 1476 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
5e53dce3 | 1477 | bgp_evpn->peer_self, attr_new, rn); |
40381db7 | 1478 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1479 | |
b57ba6d2 | 1480 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1481 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1482 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1483 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1484 | pi->extra->num_labels = 1; | |
342dd0c6 | 1485 | |
1486 | /* add the route entry to route node*/ | |
40381db7 | 1487 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1488 | } else { |
1489 | ||
40381db7 DS |
1490 | tmp_pi = local_pi; |
1491 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1492 | |
1493 | /* attribute changed */ | |
1494 | *route_changed = 1; | |
1495 | ||
342dd0c6 | 1496 | /* The attribute has changed. */ |
1497 | /* Add (or update) attribute to hash. */ | |
1498 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1499 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1500 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1501 | |
1502 | /* Restore route, if needed. */ | |
40381db7 DS |
1503 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1504 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1505 | |
1506 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1507 | bgp_attr_unintern(&tmp_pi->attr); |
1508 | tmp_pi->attr = attr_new; | |
1509 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1510 | } |
1511 | } | |
1512 | return 0; | |
1513 | } | |
1514 | ||
1515 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1516 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1517 | struct attr *src_attr) | |
342dd0c6 | 1518 | { |
1519 | afi_t afi = AFI_L2VPN; | |
1520 | safi_t safi = SAFI_EVPN; | |
1521 | struct attr attr; | |
1522 | struct bgp_node *rn = NULL; | |
5e53dce3 | 1523 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1524 | int route_changed = 0; |
342dd0c6 | 1525 | |
5e53dce3 T |
1526 | bgp_evpn = bgp_get_evpn(); |
1527 | if (!bgp_evpn) | |
faafdfa8 | 1528 | return 0; |
342dd0c6 | 1529 | |
2f69f6d3 | 1530 | /* Build path attribute for this route - use the source attr, if |
1531 | * present, else treat as locally originated. | |
1532 | */ | |
1533 | if (src_attr) | |
1534 | bgp_attr_dup(&attr, src_attr); | |
1535 | else { | |
1536 | memset(&attr, 0, sizeof(struct attr)); | |
1537 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1538 | } | |
1539 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1540 | attr.nexthop = bgp_vrf->originator_ip; |
1541 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1542 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1543 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1544 | ||
1545 | /* Setup RT and encap extended community */ | |
1546 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1547 | ||
1548 | /* get the route node in global table */ | |
5e53dce3 | 1549 | rn = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
996c9314 | 1550 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1551 | assert(rn); |
1552 | ||
1553 | /* create or update the route entry within the route node */ | |
5e53dce3 | 1554 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, rn, &attr, |
996c9314 | 1555 | &route_changed); |
342dd0c6 | 1556 | |
1557 | /* schedule for processing and unlock node */ | |
5424b7ba | 1558 | if (route_changed) { |
5e53dce3 | 1559 | bgp_process(bgp_evpn, rn, afi, safi); |
5424b7ba MK |
1560 | bgp_unlock_node(rn); |
1561 | } | |
342dd0c6 | 1562 | |
1563 | /* uninten temporary */ | |
5ee65f6f | 1564 | if (!src_attr) |
1565 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1566 | return 0; |
1567 | } | |
1568 | ||
128ea8ab | 1569 | /* |
1570 | * Create or update EVPN route entry. This could be in the VNI route table | |
1571 | * or the global route table. | |
1572 | */ | |
d62a17ae | 1573 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1574 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1575 | struct attr *attr, int add, |
40381db7 | 1576 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1577 | uint32_t seq) |
d62a17ae | 1578 | { |
40381db7 DS |
1579 | struct bgp_path_info *tmp_pi; |
1580 | struct bgp_path_info *local_pi; | |
d62a17ae | 1581 | struct attr *attr_new; |
b57ba6d2 | 1582 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1583 | uint32_t num_labels = 1; |
d62a17ae | 1584 | int route_change = 1; |
d7c0a89a | 1585 | uint8_t sticky = 0; |
b57ba6d2 | 1586 | struct prefix_evpn *evp; |
d62a17ae | 1587 | |
40381db7 | 1588 | *pi = NULL; |
b57ba6d2 MK |
1589 | evp = (struct prefix_evpn *)&rn->p; |
1590 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1591 | |
f07e1c99 | 1592 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1593 | local_pi = NULL; |
6f94b685 DS |
1594 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1595 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1596 | if (tmp_pi->peer == bgp->peer_self |
1597 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1598 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1599 | local_pi = tmp_pi; | |
d62a17ae | 1600 | } |
1601 | ||
1602 | /* If route doesn't exist already, create a new one, if told to. | |
1603 | * Otherwise act based on whether the attributes of the route have | |
1604 | * changed or not. | |
1605 | */ | |
40381db7 | 1606 | if (!local_pi && !add) |
d62a17ae | 1607 | return 0; |
1608 | ||
f07e1c99 | 1609 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1610 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1611 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1612 | |
40381db7 | 1613 | if (!local_pi) { |
d62a17ae | 1614 | /* Add (or update) attribute to hash. */ |
1615 | attr_new = bgp_attr_intern(attr); | |
1616 | ||
1617 | /* Extract MAC mobility sequence number, if any. */ | |
1618 | attr_new->mm_seqnum = | |
1619 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1620 | attr_new->sticky = sticky; | |
1621 | ||
1622 | /* Create new route with its attribute. */ | |
40381db7 | 1623 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1624 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1625 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1626 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1627 | |
1628 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1629 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1630 | |
1631 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1632 | * Only attach second label if we are advertising two labels for | |
1633 | * type-2 routes. | |
1634 | */ | |
996c9314 LB |
1635 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1636 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1637 | vni_t l3vni; |
1638 | ||
1639 | l3vni = bgpevpn_get_l3vni(vpn); | |
1640 | if (l3vni) { | |
1641 | vni2label(l3vni, &label[1]); | |
1642 | num_labels++; | |
1643 | } | |
1644 | } | |
d62a17ae | 1645 | |
40381db7 DS |
1646 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1647 | tmp_pi->extra->num_labels = num_labels; | |
1648 | bgp_path_info_add(rn, tmp_pi); | |
d62a17ae | 1649 | } else { |
40381db7 DS |
1650 | tmp_pi = local_pi; |
1651 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1652 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1653 | route_change = 0; |
1654 | else { | |
c48d9f5f MK |
1655 | /* |
1656 | * The attributes have changed, type-2 routes needs to | |
1657 | * be advertised with right labels. | |
1658 | */ | |
1659 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1660 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1661 | && CHECK_FLAG(vpn->flags, | |
1662 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1663 | vni_t l3vni; |
1664 | ||
1665 | l3vni = bgpevpn_get_l3vni(vpn); | |
1666 | if (l3vni) { | |
1667 | vni2label(l3vni, &label[1]); | |
1668 | num_labels++; | |
1669 | } | |
1670 | } | |
40381db7 DS |
1671 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1672 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1673 | |
d62a17ae | 1674 | /* The attribute has changed. */ |
1675 | /* Add (or update) attribute to hash. */ | |
1676 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1677 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1678 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1679 | |
f07e1c99 | 1680 | /* Extract MAC mobility sequence number, if any. */ |
1681 | attr_new->mm_seqnum = | |
1682 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1683 | attr_new->sticky = sticky; | |
1684 | ||
d62a17ae | 1685 | /* Restore route, if needed. */ |
40381db7 DS |
1686 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1687 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1688 | |
1689 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1690 | bgp_attr_unintern(&tmp_pi->attr); |
1691 | tmp_pi->attr = attr_new; | |
1692 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1693 | } |
1694 | } | |
1695 | ||
1696 | /* Return back the route entry. */ | |
40381db7 | 1697 | *pi = tmp_pi; |
d62a17ae | 1698 | return route_change; |
128ea8ab | 1699 | } |
1700 | ||
ec0ab544 AK |
1701 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1702 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1703 | { | |
1704 | struct bgp_path_info *tmp_ri; | |
1705 | struct bgp_path_info *curr_select = NULL; | |
1706 | ||
1707 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1708 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1709 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1710 | curr_select = tmp_ri; | |
1711 | break; | |
1712 | } | |
1713 | } | |
1714 | ||
1715 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1716 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1717 | evpn_zebra_install(bgp, vpn, | |
1718 | (struct prefix_evpn *)&rn->p, | |
1719 | curr_select); | |
1720 | } | |
1721 | ||
6d8c603a AK |
1722 | /* |
1723 | * If the local route was not selected evict it and tell zebra to re-add | |
1724 | * the best remote dest. | |
1725 | * | |
1726 | * Typically a local path added by zebra is expected to be selected as | |
1727 | * best. In which case when a remote path wins as best (later) | |
1728 | * evpn_route_select_install itself evicts the older-local-best path. | |
1729 | * | |
1730 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1731 | * is possible that the local path is no longer the "older" best path. | |
1732 | * It is a path that was never designated as best and hence requires | |
1733 | * additional handling to prevent bgp from injecting and holding on to a | |
1734 | * non-best local path. | |
1735 | */ | |
1736 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1737 | struct bgpevpn *vpn, | |
1738 | struct bgp_node *rn, | |
9a8897aa | 1739 | struct bgp_path_info *local_pi) |
6d8c603a | 1740 | { |
6d8c603a AK |
1741 | char buf[PREFIX_STRLEN]; |
1742 | ||
6d8c603a AK |
1743 | /* local path was not picked as the winner; kick it out */ |
1744 | if (bgp_debug_zebra(NULL)) { | |
1745 | zlog_debug("evicting local evpn prefix %s as remote won", | |
1746 | prefix2str(&rn->p, buf, sizeof(buf))); | |
1747 | } | |
6d8c603a AK |
1748 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1749 | bgp_path_info_reap(rn, local_pi); | |
1750 | ||
1751 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1752 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1753 | } |
1754 | ||
128ea8ab | 1755 | /* |
1756 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1757 | * and schedule for processing. | |
1758 | */ | |
d62a17ae | 1759 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1760 | struct prefix_evpn *p, uint8_t flags, |
1761 | uint32_t seq) | |
128ea8ab | 1762 | { |
d62a17ae | 1763 | struct bgp_node *rn; |
1764 | struct attr attr; | |
1765 | struct attr *attr_new; | |
1ec31309 | 1766 | int add_l3_ecomm = 0; |
40381db7 | 1767 | struct bgp_path_info *pi; |
d62a17ae | 1768 | afi_t afi = AFI_L2VPN; |
1769 | safi_t safi = SAFI_EVPN; | |
1770 | int route_change; | |
128ea8ab | 1771 | |
d62a17ae | 1772 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1773 | |
d62a17ae | 1774 | /* Build path-attribute for this route. */ |
1775 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1776 | attr.nexthop = vpn->originator_ip; | |
1777 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1778 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1779 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1780 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1781 | attr.router_flag = CHECK_FLAG(flags, |
1782 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1783 | |
1784 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1785 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1786 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1787 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1788 | } | |
be41eb68 | 1789 | |
1ec31309 | 1790 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1791 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1792 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1793 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1794 | |
1ec31309 | 1795 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1796 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1797 | * these routes. | |
1798 | */ | |
1799 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1800 | (is_evpn_prefix_ipaddr_v4(p) || |
1801 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1802 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1803 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1804 | add_l3_ecomm = 1; |
1805 | ||
1806 | /* Set up extended community. */ | |
1807 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1808 | |
d62a17ae | 1809 | /* First, create (or fetch) route node within the VNI. */ |
1810 | /* NOTE: There is no RD here. */ | |
1811 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1812 | |
d62a17ae | 1813 | /* Create or update route entry. */ |
1814 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1815 | 1, &pi, flags, seq); |
1816 | assert(pi); | |
1817 | attr_new = pi->attr; | |
128ea8ab | 1818 | |
6d8c603a AK |
1819 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1820 | bgp_path_info_lock(pi); | |
d62a17ae | 1821 | /* Perform route selection; this is just to set the flags correctly |
1822 | * as local route in the VNI always wins. | |
1823 | */ | |
1824 | evpn_route_select_install(bgp, vpn, rn); | |
6d8c603a | 1825 | /* |
9a8897aa AK |
1826 | * If the new local route was not selected evict it and tell zebra |
1827 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1828 | * routes. | |
6d8c603a | 1829 | */ |
9a8897aa AK |
1830 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1831 | route_change = 0; | |
1832 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1833 | } | |
6d8c603a AK |
1834 | bgp_path_info_unlock(pi); |
1835 | ||
d62a17ae | 1836 | bgp_unlock_node(rn); |
128ea8ab | 1837 | |
d62a17ae | 1838 | /* If this is a new route or some attribute has changed, export the |
1839 | * route to the global table. The route will be advertised to peers | |
1840 | * from there. Note that this table is a 2-level tree (RD-level + | |
1841 | * Prefix-level) similar to L3VPN routes. | |
1842 | */ | |
1843 | if (route_change) { | |
40381db7 | 1844 | struct bgp_path_info *global_pi; |
128ea8ab | 1845 | |
d62a17ae | 1846 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1847 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1848 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1849 | &global_pi, flags, seq); |
128ea8ab | 1850 | |
d62a17ae | 1851 | /* Schedule for processing and unlock node. */ |
1852 | bgp_process(bgp, rn, afi, safi); | |
1853 | bgp_unlock_node(rn); | |
1854 | } | |
128ea8ab | 1855 | |
d62a17ae | 1856 | /* Unintern temporary. */ |
1857 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1858 | |
d62a17ae | 1859 | return 0; |
128ea8ab | 1860 | } |
1861 | ||
50f74cf1 | 1862 | /* |
1863 | * Delete EVPN route entry. | |
1864 | * The entry can be in ESI/VNI table or the global table. | |
1865 | */ | |
4b7e6066 | 1866 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1867 | struct bgp_node *rn, |
40381db7 | 1868 | struct bgp_path_info **pi) |
342dd0c6 | 1869 | { |
40381db7 | 1870 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1871 | |
40381db7 | 1872 | *pi = NULL; |
342dd0c6 | 1873 | |
50f74cf1 | 1874 | /* Now, find matching route. */ |
6f94b685 DS |
1875 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1876 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1877 | if (tmp_pi->peer == bgp->peer_self |
1878 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1879 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1880 | break; |
1881 | ||
40381db7 | 1882 | *pi = tmp_pi; |
342dd0c6 | 1883 | |
1884 | /* Mark route for delete. */ | |
40381db7 DS |
1885 | if (tmp_pi) |
1886 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1887 | } |
1888 | ||
50f74cf1 | 1889 | |
1890 | ||
1891 | /* Delete EVPN ES (type-4) route */ | |
1892 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1893 | struct evpnes *es, | |
1894 | struct prefix_evpn *p) | |
1895 | { | |
1896 | afi_t afi = AFI_L2VPN; | |
1897 | safi_t safi = SAFI_EVPN; | |
40381db7 | 1898 | struct bgp_path_info *pi; |
50f74cf1 | 1899 | struct bgp_node *rn = NULL; /* rn in esi table */ |
1900 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1901 | ||
1902 | /* First, locate the route node within the ESI. | |
1903 | * If it doesn't exist, ther is nothing to do. | |
1904 | * Note: there is no RD here. | |
1905 | */ | |
1906 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1907 | if (!rn) |
50f74cf1 | 1908 | return 0; |
1909 | ||
1910 | /* Next, locate route node in the global EVPN routing table. | |
1911 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1912 | */ | |
1913 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1914 | (struct prefix *)p, &es->prd); | |
1915 | if (global_rn) { | |
1916 | ||
1917 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1918 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 1919 | |
1920 | /* Schedule for processing - withdraws to peers happen from | |
1921 | * this table. | |
1922 | */ | |
40381db7 | 1923 | if (pi) |
50f74cf1 | 1924 | bgp_process(bgp, global_rn, afi, safi); |
1925 | bgp_unlock_node(global_rn); | |
1926 | } | |
1927 | ||
1928 | /* | |
1929 | * Delete route entry in the ESI route table. | |
1930 | * This can just be removed. | |
1931 | */ | |
40381db7 DS |
1932 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1933 | if (pi) | |
1934 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 1935 | bgp_unlock_node(rn); |
1936 | return 0; | |
1937 | } | |
1938 | ||
342dd0c6 | 1939 | /* Delete EVPN type5 route */ |
996c9314 | 1940 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1941 | { |
1942 | afi_t afi = AFI_L2VPN; | |
1943 | safi_t safi = SAFI_EVPN; | |
1944 | struct bgp_node *rn = NULL; | |
40381db7 | 1945 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1946 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1947 | |
5e53dce3 T |
1948 | bgp_evpn = bgp_get_evpn(); |
1949 | if (!bgp_evpn) | |
faafdfa8 | 1950 | return 0; |
342dd0c6 | 1951 | |
1952 | /* locate the global route entry for this type-5 prefix */ | |
5e53dce3 | 1953 | rn = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
342dd0c6 | 1954 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
1955 | if (!rn) | |
1956 | return 0; | |
1957 | ||
5e53dce3 | 1958 | delete_evpn_route_entry(bgp_evpn, afi, safi, rn, &pi); |
40381db7 | 1959 | if (pi) |
5e53dce3 | 1960 | bgp_process(bgp_evpn, rn, afi, safi); |
342dd0c6 | 1961 | bgp_unlock_node(rn); |
1962 | return 0; | |
1963 | } | |
1964 | ||
128ea8ab | 1965 | /* |
1966 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1967 | * schedule for processing. | |
1968 | */ | |
d62a17ae | 1969 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1970 | struct prefix_evpn *p) | |
1971 | { | |
1972 | struct bgp_node *rn, *global_rn; | |
40381db7 | 1973 | struct bgp_path_info *pi; |
d62a17ae | 1974 | afi_t afi = AFI_L2VPN; |
1975 | safi_t safi = SAFI_EVPN; | |
1976 | ||
1977 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1978 | * there | |
1979 | * is nothing further to do. | |
1980 | */ | |
1981 | /* NOTE: There is no RD here. */ | |
1982 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1983 | if (!rn) | |
1984 | return 0; | |
1985 | ||
1986 | /* Next, locate route node in the global EVPN routing table. Note that | |
1987 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1988 | * L3VPN routes. | |
1989 | */ | |
1990 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1991 | (struct prefix *)p, &vpn->prd); | |
1992 | if (global_rn) { | |
1993 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1994 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 1995 | |
1996 | /* Schedule for processing - withdraws to peers happen from | |
1997 | * this table. | |
1998 | */ | |
40381db7 | 1999 | if (pi) |
d62a17ae | 2000 | bgp_process(bgp, global_rn, afi, safi); |
2001 | bgp_unlock_node(global_rn); | |
2002 | } | |
2003 | ||
2004 | /* Delete route entry in the VNI route table. This can just be removed. | |
2005 | */ | |
40381db7 | 2006 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 2007 | if (pi) { |
40381db7 | 2008 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
2009 | evpn_route_select_install(bgp, vpn, rn); |
2010 | } | |
d62a17ae | 2011 | bgp_unlock_node(rn); |
2012 | ||
2013 | return 0; | |
128ea8ab | 2014 | } |
2015 | ||
2016 | /* | |
2017 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2018 | * be scheduled for advertise to peers. | |
2019 | */ | |
d62a17ae | 2020 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2021 | { | |
2022 | afi_t afi; | |
2023 | safi_t safi; | |
2024 | struct bgp_node *rn; | |
40381db7 | 2025 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2026 | struct attr attr; |
d62a17ae | 2027 | struct attr *attr_new; |
f07e1c99 | 2028 | uint32_t seq; |
1ec31309 | 2029 | int add_l3_ecomm = 0; |
d62a17ae | 2030 | |
2031 | afi = AFI_L2VPN; | |
2032 | safi = SAFI_EVPN; | |
d62a17ae | 2033 | |
2034 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2035 | * routes updated, update corresponding entry in the global table too. | |
2036 | */ | |
2037 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2038 | rn = bgp_route_next(rn)) { | |
2039 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2040 | struct bgp_node *rd_rn; | |
40381db7 | 2041 | struct bgp_path_info *global_pi; |
d62a17ae | 2042 | |
2043 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2044 | continue; | |
2045 | ||
f07e1c99 | 2046 | /* Identify local route. */ |
6f94b685 DS |
2047 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2048 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2049 | if (tmp_pi->peer == bgp->peer_self |
2050 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2051 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2052 | break; |
7ec156a9 | 2053 | } |
d62a17ae | 2054 | |
40381db7 | 2055 | if (!tmp_pi) |
d62a17ae | 2056 | continue; |
2057 | ||
f07e1c99 | 2058 | /* |
2059 | * Build attribute per local route as the MAC mobility and | |
2060 | * some other values could differ for different routes. The | |
2061 | * attributes will be shared in the hash table. | |
2062 | */ | |
2063 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2064 | attr.nexthop = vpn->originator_ip; | |
2065 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2066 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2067 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
2068 | ||
2069 | if (evpn_route_is_sticky(bgp, rn)) | |
2070 | attr.sticky = 1; | |
2071 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2072 | attr.default_gw = 1; | |
2073 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2074 | attr.router_flag = 1; | |
2075 | } | |
2076 | ||
2077 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2078 | * using L3 VNI for type-2 routes also. | |
2079 | */ | |
2080 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2081 | !IN6_IS_ADDR_LINKLOCAL( |
2082 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2083 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2084 | bgpevpn_get_l3vni(vpn)) | |
2085 | add_l3_ecomm = 1; | |
2086 | ||
2087 | /* Set up extended community. */ | |
2088 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2089 | ||
40381db7 | 2090 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2091 | |
2092 | /* Update the route entry. */ | |
40381db7 DS |
2093 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2094 | 0, seq); | |
f07e1c99 | 2095 | |
d62a17ae | 2096 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2097 | * correctly as local route in the VNI always wins. |
d62a17ae | 2098 | */ |
2099 | evpn_route_select_install(bgp, vpn, rn); | |
2100 | ||
40381db7 | 2101 | attr_new = pi->attr; |
d62a17ae | 2102 | |
2103 | /* Update route in global routing table. */ | |
2104 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2105 | (struct prefix *)evp, &vpn->prd); | |
2106 | assert(rd_rn); | |
2107 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
40381db7 | 2108 | &global_pi, 0, |
f07e1c99 | 2109 | mac_mobility_seqnum(attr_new)); |
d62a17ae | 2110 | |
2111 | /* Schedule for processing and unlock node. */ | |
2112 | bgp_process(bgp, rd_rn, afi, safi); | |
2113 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2114 | |
f07e1c99 | 2115 | /* Unintern temporary. */ |
2116 | aspath_unintern(&attr.aspath); | |
2117 | ||
2118 | } | |
d62a17ae | 2119 | |
2120 | return 0; | |
128ea8ab | 2121 | } |
2122 | ||
2123 | /* | |
2124 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2125 | * global routing table. These are also scheduled for withdraw from peers. | |
2126 | */ | |
d62a17ae | 2127 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2128 | { |
d62a17ae | 2129 | afi_t afi; |
2130 | safi_t safi; | |
2131 | struct bgp_node *rdrn, *rn; | |
2132 | struct bgp_table *table; | |
40381db7 | 2133 | struct bgp_path_info *pi; |
128ea8ab | 2134 | |
d62a17ae | 2135 | afi = AFI_L2VPN; |
2136 | safi = SAFI_EVPN; | |
128ea8ab | 2137 | |
d62a17ae | 2138 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2139 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2140 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2141 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2142 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2143 | |
d62a17ae | 2144 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2145 | continue; | |
128ea8ab | 2146 | |
40381db7 DS |
2147 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2148 | if (pi) | |
d62a17ae | 2149 | bgp_process(bgp, rn, afi, safi); |
2150 | } | |
2151 | } | |
128ea8ab | 2152 | |
d62a17ae | 2153 | /* Unlock RD node. */ |
2154 | if (rdrn) | |
2155 | bgp_unlock_node(rdrn); | |
128ea8ab | 2156 | |
d62a17ae | 2157 | return 0; |
128ea8ab | 2158 | } |
2159 | ||
2160 | /* | |
2161 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2162 | * table as well as the per-VNI route table. | |
2163 | */ | |
d62a17ae | 2164 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2165 | { |
d62a17ae | 2166 | afi_t afi; |
2167 | safi_t safi; | |
2168 | struct bgp_node *rn; | |
40381db7 | 2169 | struct bgp_path_info *pi; |
128ea8ab | 2170 | |
d62a17ae | 2171 | afi = AFI_L2VPN; |
2172 | safi = SAFI_EVPN; | |
128ea8ab | 2173 | |
d62a17ae | 2174 | /* First, walk the global route table for this VNI's type-2 local |
2175 | * routes. | |
2176 | * EVPN routes are a 2-level table, first get the RD table. | |
2177 | */ | |
2178 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2179 | |
d62a17ae | 2180 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2181 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2182 | rn = bgp_route_next(rn)) { | |
2183 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2184 | |
d62a17ae | 2185 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2186 | continue; | |
128ea8ab | 2187 | |
40381db7 | 2188 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2189 | |
d62a17ae | 2190 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2191 | if (pi) |
2192 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2193 | } |
128ea8ab | 2194 | |
d62a17ae | 2195 | return 0; |
128ea8ab | 2196 | } |
2197 | ||
50f74cf1 | 2198 | /* |
2199 | * Delete all routes in per ES route-table | |
2200 | */ | |
2201 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2202 | { | |
2203 | struct bgp_node *rn; | |
40381db7 | 2204 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2205 | |
2206 | /* Walk this ES's route table and delete all routes. */ | |
2207 | for (rn = bgp_table_top(es->route_table); rn; | |
2208 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2209 | for (pi = bgp_node_get_bgp_path_info(rn); |
2210 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2211 | bgp_path_info_delete(rn, pi); |
2212 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2213 | } |
2214 | } | |
2215 | ||
2216 | return 0; | |
2217 | } | |
2218 | ||
128ea8ab | 2219 | /* |
2220 | * Delete all routes in the per-VNI route table. | |
2221 | */ | |
d62a17ae | 2222 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2223 | { |
d62a17ae | 2224 | struct bgp_node *rn; |
40381db7 | 2225 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2226 | |
d62a17ae | 2227 | /* Walk this VNI's route table and delete all routes. */ |
2228 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2229 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2230 | for (pi = bgp_node_get_bgp_path_info(rn); |
2231 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2232 | bgp_path_info_delete(rn, pi); |
2233 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2234 | } |
2235 | } | |
128ea8ab | 2236 | |
d62a17ae | 2237 | return 0; |
128ea8ab | 2238 | } |
2239 | ||
833b8a50 AK |
2240 | /* BUM traffic flood mode per-l2-vni */ |
2241 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2242 | struct bgpevpn *vpn) | |
2243 | { | |
2244 | /* if flooding has been globally disabled per-vni mode is | |
2245 | * not relevant | |
2246 | */ | |
2247 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2248 | return VXLAN_FLOOD_DISABLED; | |
2249 | ||
2250 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2251 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2252 | return VXLAN_FLOOD_PIM_SM; | |
2253 | ||
2254 | /* default is ingress replication */ | |
2255 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2256 | } | |
2257 | ||
128ea8ab | 2258 | /* |
2259 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2260 | * export RT getting modified or change to tunnel IP. Note that these | |
2261 | * situations need the route in the per-VNI table as well as the global | |
2262 | * table to be updated (as attributes change). | |
2263 | */ | |
d62a17ae | 2264 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2265 | { |
d62a17ae | 2266 | int ret; |
2267 | struct prefix_evpn p; | |
128ea8ab | 2268 | |
d62a17ae | 2269 | /* Update and advertise the type-3 route (only one) followed by the |
2270 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2271 | * |
2272 | * RT-3 only if doing head-end replication | |
d62a17ae | 2273 | */ |
833b8a50 AK |
2274 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2275 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
2276 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2277 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2278 | if (ret) | |
2279 | return ret; | |
2280 | } | |
128ea8ab | 2281 | |
d62a17ae | 2282 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2283 | } |
2284 | ||
50f74cf1 | 2285 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2286 | * Also remove all other routes from the per ES table. | |
2287 | * Invoked when ES is deleted. | |
2288 | */ | |
2289 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2290 | { | |
2291 | int ret; | |
2292 | char buf[ESI_STR_LEN]; | |
2293 | struct prefix_evpn p; | |
2294 | ||
2295 | /* Delete and withdraw locally learnt ES route */ | |
2296 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2297 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2298 | if (ret) { | |
e50f7cfd | 2299 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2300 | "%u failed to delete type-4 route for ESI %s", |
2301 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2302 | } |
2303 | ||
2304 | /* Delete all routes from per ES table */ | |
2305 | return delete_all_es_routes(bgp, es); | |
2306 | } | |
2307 | ||
128ea8ab | 2308 | /* |
2309 | * Delete (and withdraw) local routes for specified VNI from the global | |
2310 | * table and per-VNI table. After this, remove all other routes from | |
2311 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2312 | * (advertise-all-vni) being disabled. | |
2313 | */ | |
d62a17ae | 2314 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2315 | { |
d62a17ae | 2316 | int ret; |
2317 | struct prefix_evpn p; | |
128ea8ab | 2318 | |
d62a17ae | 2319 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2320 | * followed by type-3 routes (only one) - for this VNI. | |
2321 | */ | |
2322 | ret = delete_all_type2_routes(bgp, vpn); | |
2323 | if (ret) | |
2324 | return ret; | |
128ea8ab | 2325 | |
d62a17ae | 2326 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2327 | ret = delete_evpn_route(bgp, vpn, &p); | |
2328 | if (ret) | |
2329 | return ret; | |
128ea8ab | 2330 | |
d62a17ae | 2331 | /* Delete all routes from the per-VNI table. */ |
2332 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2333 | } |
2334 | ||
76d07c7a AK |
2335 | /* |
2336 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2337 | * remove the type-3 route if any. A new type-3 route will be generated | |
2338 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2339 | */ | |
2340 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2341 | struct in_addr mcast_grp) | |
2342 | { | |
2343 | struct prefix_evpn p; | |
2344 | ||
2345 | vpn->mcast_grp = mcast_grp; | |
2346 | ||
2347 | if (is_vni_live(vpn)) { | |
2348 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2349 | delete_evpn_route(bgp, vpn, &p); | |
2350 | } | |
2351 | ||
2352 | return 0; | |
2353 | } | |
2354 | ||
128ea8ab | 2355 | /* |
d1911c26 | 2356 | * There is a tunnel endpoint IP address change for this VNI, delete |
2357 | * prior type-3 route (if needed) and update. | |
2358 | * Note: Route re-advertisement happens elsewhere after other processing | |
2359 | * other changes. | |
128ea8ab | 2360 | */ |
d62a17ae | 2361 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2362 | struct in_addr originator_ip) | |
128ea8ab | 2363 | { |
d62a17ae | 2364 | struct prefix_evpn p; |
128ea8ab | 2365 | |
ddd16ed5 MK |
2366 | /* If VNI is not live, we only need to update the originator ip */ |
2367 | if (!is_vni_live(vpn)) { | |
2368 | vpn->originator_ip = originator_ip; | |
2369 | return 0; | |
2370 | } | |
2371 | ||
db0e1937 MK |
2372 | /* Update the tunnel-ip hash */ |
2373 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2374 | bgp_tip_add(bgp, &originator_ip); | |
2375 | ||
2376 | /* filter routes as martian nexthop db has changed */ | |
2377 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2378 | ||
d62a17ae | 2379 | /* Need to withdraw type-3 route as the originator IP is part |
2380 | * of the key. | |
2381 | */ | |
2382 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2383 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2384 | |
d62a17ae | 2385 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2386 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2387 | return 0; |
128ea8ab | 2388 | } |
2389 | ||
50f74cf1 | 2390 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2391 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2392 | struct prefix_evpn *p, |
40381db7 | 2393 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2394 | { |
2395 | int ret = 0; | |
2396 | struct bgp_node *rn = NULL; | |
40381db7 | 2397 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2398 | struct attr *attr_new = NULL; |
2399 | ||
2400 | /* Create (or fetch) route within the VNI. | |
2401 | * NOTE: There is no RD here. | |
2402 | */ | |
2403 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2404 | ||
2405 | /* Check if route entry is already present. */ | |
6f94b685 | 2406 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2407 | if (pi->extra |
2408 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2409 | break; |
2410 | ||
40381db7 | 2411 | if (!pi) { |
50f74cf1 | 2412 | /* Add (or update) attribute to hash. */ |
40381db7 | 2413 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2414 | |
2415 | /* Create new route with its attribute. */ | |
40381db7 DS |
2416 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2417 | parent_pi->peer, attr_new, rn); | |
2418 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2419 | bgp_path_info_extra_get(pi); | |
2420 | pi->extra->parent = parent_pi; | |
2421 | bgp_path_info_add(rn, pi); | |
50f74cf1 | 2422 | } else { |
40381db7 DS |
2423 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2424 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2425 | bgp_unlock_node(rn); |
2426 | return 0; | |
2427 | } | |
2428 | /* The attribute has changed. */ | |
2429 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2430 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2431 | |
2432 | /* Restore route, if needed. */ | |
40381db7 DS |
2433 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2434 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2435 | |
2436 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2437 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2438 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2439 | |
2440 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2441 | bgp_attr_unintern(&pi->attr); |
2442 | pi->attr = attr_new; | |
2443 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2444 | } |
2445 | ||
2446 | /* Perform route selection and update zebra, if required. */ | |
2447 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2448 | return ret; | |
2449 | } | |
2450 | ||
d3135ba3 | 2451 | /* |
2452 | * Install route entry into the VRF routing table and invoke route selection. | |
2453 | */ | |
2454 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2455 | struct prefix_evpn *evp, | |
40381db7 | 2456 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2457 | { |
2458 | struct bgp_node *rn; | |
40381db7 | 2459 | struct bgp_path_info *pi; |
1ec31309 | 2460 | struct attr attr; |
d3135ba3 | 2461 | struct attr *attr_new; |
c4edf708 | 2462 | int ret = 0; |
d3135ba3 | 2463 | struct prefix p; |
2464 | struct prefix *pp = &p; | |
2465 | afi_t afi = 0; | |
2466 | safi_t safi = 0; | |
1eb88002 MK |
2467 | char buf[PREFIX_STRLEN]; |
2468 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2469 | |
2470 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2471 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2472 | |
1eb88002 | 2473 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2474 | zlog_debug( |
2475 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2476 | prefix2str(evp, buf, sizeof(buf)), | |
2477 | prefix2str(pp, buf1, sizeof(buf)), | |
2478 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2479 | } |
2480 | ||
d3135ba3 | 2481 | /* Create (or fetch) route within the VRF. */ |
2482 | /* NOTE: There is no RD here. */ | |
3714a385 | 2483 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2484 | afi = AFI_IP; |
2485 | safi = SAFI_UNICAST; | |
2486 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2487 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2488 | afi = AFI_IP6; |
2489 | safi = SAFI_UNICAST; | |
2490 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2491 | } else | |
2492 | return 0; | |
2493 | ||
1ec31309 | 2494 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2495 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2496 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2497 | * address for the rest of the code to flow through. In the case of IPv4, | |
2498 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2499 | */ |
40381db7 | 2500 | bgp_attr_dup(&attr, parent_pi->attr); |
1ec31309 | 2501 | if (afi == AFI_IP6) |
2502 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2503 | else |
2504 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2505 | |
d3135ba3 | 2506 | /* Check if route entry is already present. */ |
6f94b685 | 2507 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2508 | if (pi->extra |
2509 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2510 | break; |
2511 | ||
40381db7 | 2512 | if (!pi) { |
d3135ba3 | 2513 | /* Add (or update) attribute to hash. */ |
1ec31309 | 2514 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2515 | |
2516 | /* Create new route with its attribute. */ | |
40381db7 DS |
2517 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2518 | parent_pi->peer, attr_new, rn); | |
2519 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2520 | bgp_path_info_extra_get(pi); | |
2521 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2522 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2523 | if (parent_pi->extra) { | |
2524 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2525 | sizeof(pi->extra->label)); | |
2526 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2527 | } |
40381db7 | 2528 | bgp_path_info_add(rn, pi); |
d3135ba3 | 2529 | } else { |
40381db7 DS |
2530 | if (attrhash_cmp(pi->attr, &attr) |
2531 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2532 | bgp_unlock_node(rn); |
2533 | return 0; | |
2534 | } | |
2535 | /* The attribute has changed. */ | |
2536 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2537 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2538 | |
2539 | /* Restore route, if needed. */ | |
40381db7 DS |
2540 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2541 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2542 | |
2543 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2544 | if ((afi == AFI_IP |
2545 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2546 | || (afi == AFI_IP6 | |
2547 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2548 | &attr_new->mp_nexthop_global))) | |
2549 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2550 | |
a9f8ad9f | 2551 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2552 | /* Unintern existing, set to new. */ |
40381db7 DS |
2553 | bgp_attr_unintern(&pi->attr); |
2554 | pi->attr = attr_new; | |
2555 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2556 | } |
2557 | ||
40381db7 | 2558 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2559 | |
d3135ba3 | 2560 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2561 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2562 | |
7452e879 | 2563 | /* Process for route leaking. */ |
2564 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2565 | ||
d3135ba3 | 2566 | return ret; |
2567 | } | |
2568 | ||
128ea8ab | 2569 | /* |
2570 | * Install route entry into the VNI routing table and invoke route selection. | |
2571 | */ | |
d62a17ae | 2572 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2573 | struct prefix_evpn *p, | |
40381db7 | 2574 | struct bgp_path_info *parent_pi) |
d62a17ae | 2575 | { |
2576 | struct bgp_node *rn; | |
40381db7 | 2577 | struct bgp_path_info *pi; |
d62a17ae | 2578 | struct attr *attr_new; |
2579 | int ret; | |
2580 | ||
2581 | /* Create (or fetch) route within the VNI. */ | |
2582 | /* NOTE: There is no RD here. */ | |
2583 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2584 | ||
2585 | /* Check if route entry is already present. */ | |
6f94b685 | 2586 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2587 | if (pi->extra |
2588 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2589 | break; |
2590 | ||
40381db7 | 2591 | if (!pi) { |
d62a17ae | 2592 | /* Add (or update) attribute to hash. */ |
40381db7 | 2593 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2594 | |
2595 | /* Create new route with its attribute. */ | |
40381db7 DS |
2596 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2597 | parent_pi->peer, attr_new, rn); | |
2598 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2599 | bgp_path_info_extra_get(pi); | |
2600 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2601 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2602 | if (parent_pi->extra) { | |
2603 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2604 | sizeof(pi->extra->label)); | |
2605 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
b57ba6d2 | 2606 | } |
40381db7 | 2607 | bgp_path_info_add(rn, pi); |
d62a17ae | 2608 | } else { |
40381db7 DS |
2609 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2610 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2611 | bgp_unlock_node(rn); |
2612 | return 0; | |
2613 | } | |
2614 | /* The attribute has changed. */ | |
2615 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2616 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2617 | |
50f74cf1 | 2618 | /* Restore route, if needed. */ |
40381db7 DS |
2619 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2620 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2621 | |
2622 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2623 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2624 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2625 | |
2626 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2627 | bgp_attr_unintern(&pi->attr); |
2628 | pi->attr = attr_new; | |
2629 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2630 | } |
2631 | ||
2632 | /* Perform route selection and update zebra, if required. */ | |
2633 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2634 | ||
2635 | return ret; | |
2636 | } | |
2637 | ||
2638 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2639 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2640 | struct prefix_evpn *p, |
40381db7 | 2641 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2642 | { |
2643 | int ret; | |
2644 | struct bgp_node *rn; | |
40381db7 | 2645 | struct bgp_path_info *pi; |
50f74cf1 | 2646 | |
2647 | if (!es->route_table) | |
2648 | return 0; | |
2649 | ||
2650 | /* Locate route within the ESI. | |
2651 | * NOTE: There is no RD here. | |
2652 | */ | |
2653 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2654 | if (!rn) | |
2655 | return 0; | |
2656 | ||
2657 | /* Find matching route entry. */ | |
6f94b685 | 2658 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2659 | if (pi->extra |
2660 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2661 | break; |
d62a17ae | 2662 | |
40381db7 | 2663 | if (!pi) |
50f74cf1 | 2664 | return 0; |
d62a17ae | 2665 | |
50f74cf1 | 2666 | /* Mark entry for deletion */ |
40381db7 | 2667 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2668 | |
2669 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2670 | ret = evpn_es_route_select_install(bgp, es, rn); |
2671 | ||
2672 | /* Unlock route node. */ | |
2673 | bgp_unlock_node(rn); | |
d62a17ae | 2674 | |
2675 | return ret; | |
128ea8ab | 2676 | } |
2677 | ||
d3135ba3 | 2678 | /* |
2679 | * Uninstall route entry from the VRF routing table and send message | |
2680 | * to zebra, if appropriate. | |
2681 | */ | |
2682 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2683 | struct prefix_evpn *evp, | |
40381db7 | 2684 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2685 | { |
2686 | struct bgp_node *rn; | |
40381db7 | 2687 | struct bgp_path_info *pi; |
c4edf708 | 2688 | int ret = 0; |
d3135ba3 | 2689 | struct prefix p; |
2690 | struct prefix *pp = &p; | |
2691 | afi_t afi = 0; | |
2692 | safi_t safi = 0; | |
1eb88002 MK |
2693 | char buf[PREFIX_STRLEN]; |
2694 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2695 | |
2696 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2697 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2698 | |
1eb88002 | 2699 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2700 | zlog_debug( |
2701 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2702 | prefix2str(evp, buf, sizeof(buf)), | |
2703 | prefix2str(pp, buf1, sizeof(buf)), | |
2704 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2705 | } |
2706 | ||
d3135ba3 | 2707 | /* Locate route within the VRF. */ |
2708 | /* NOTE: There is no RD here. */ | |
3714a385 | 2709 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2710 | afi = AFI_IP; |
2711 | safi = SAFI_UNICAST; | |
2712 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2713 | } else { | |
2714 | afi = AFI_IP6; | |
2715 | safi = SAFI_UNICAST; | |
2716 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2717 | } | |
2718 | ||
2719 | if (!rn) | |
2720 | return 0; | |
2721 | ||
2722 | /* Find matching route entry. */ | |
6f94b685 | 2723 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2724 | if (pi->extra |
2725 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2726 | break; |
2727 | ||
40381db7 | 2728 | if (!pi) |
d3135ba3 | 2729 | return 0; |
2730 | ||
7452e879 | 2731 | /* Process for route leaking. */ |
2732 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2733 | ||
40381db7 | 2734 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2735 | |
d3135ba3 | 2736 | /* Mark entry for deletion */ |
40381db7 | 2737 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2738 | |
2739 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2740 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2741 | |
2742 | /* Unlock route node. */ | |
2743 | bgp_unlock_node(rn); | |
2744 | ||
2745 | return ret; | |
2746 | } | |
2747 | ||
128ea8ab | 2748 | /* |
2749 | * Uninstall route entry from the VNI routing table and send message | |
2750 | * to zebra, if appropriate. | |
2751 | */ | |
d62a17ae | 2752 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2753 | struct prefix_evpn *p, | |
40381db7 | 2754 | struct bgp_path_info *parent_pi) |
128ea8ab | 2755 | { |
d62a17ae | 2756 | struct bgp_node *rn; |
40381db7 | 2757 | struct bgp_path_info *pi; |
d62a17ae | 2758 | int ret; |
128ea8ab | 2759 | |
d62a17ae | 2760 | /* Locate route within the VNI. */ |
2761 | /* NOTE: There is no RD here. */ | |
2762 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2763 | if (!rn) | |
2764 | return 0; | |
128ea8ab | 2765 | |
d62a17ae | 2766 | /* Find matching route entry. */ |
6f94b685 | 2767 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2768 | if (pi->extra |
2769 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2770 | break; |
128ea8ab | 2771 | |
40381db7 | 2772 | if (!pi) |
d62a17ae | 2773 | return 0; |
128ea8ab | 2774 | |
d62a17ae | 2775 | /* Mark entry for deletion */ |
40381db7 | 2776 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2777 | |
d62a17ae | 2778 | /* Perform route selection and update zebra, if required. */ |
2779 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2780 | |
d62a17ae | 2781 | /* Unlock route node. */ |
2782 | bgp_unlock_node(rn); | |
128ea8ab | 2783 | |
d62a17ae | 2784 | return ret; |
128ea8ab | 2785 | } |
2786 | ||
50f74cf1 | 2787 | /* |
2788 | * Given a prefix, see if it belongs to ES. | |
2789 | */ | |
2790 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2791 | struct evpnes *es) | |
2792 | { | |
2793 | /* if not an ES route return false */ | |
2794 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2795 | return 0; | |
2796 | ||
2797 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2798 | return 1; | |
2799 | ||
2800 | return 0; | |
2801 | } | |
2802 | ||
5ba238b7 MK |
2803 | /* |
2804 | * Given a route entry and a VRF, see if this route entry should be | |
2805 | * imported into the VRF i.e., RTs match. | |
2806 | */ | |
4b7e6066 | 2807 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2808 | struct bgp_path_info *pi) |
5ba238b7 | 2809 | { |
40381db7 | 2810 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2811 | struct ecommunity *ecom; |
2812 | int i; | |
2813 | ||
2814 | assert(attr); | |
2815 | /* Route should have valid RT to be even considered. */ | |
2816 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2817 | return 0; | |
2818 | ||
2819 | ecom = attr->ecommunity; | |
2820 | if (!ecom || !ecom->size) | |
2821 | return 0; | |
2822 | ||
2823 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2824 | * matches, we're done. | |
2825 | */ | |
2826 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2827 | uint8_t *pnt; |
2828 | uint8_t type, sub_type; | |
5ba238b7 MK |
2829 | struct ecommunity_val *eval; |
2830 | struct ecommunity_val eval_tmp; | |
2831 | struct vrf_irt_node *irt; | |
2832 | ||
2833 | /* Only deal with RTs */ | |
2834 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2835 | eval = (struct ecommunity_val *)(ecom->val | |
2836 | + (i * ECOMMUNITY_SIZE)); | |
2837 | type = *pnt++; | |
2838 | sub_type = *pnt++; | |
2839 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2840 | continue; | |
2841 | ||
2842 | /* See if this RT matches specified VNIs import RTs */ | |
2843 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2844 | if (irt) |
5ba238b7 MK |
2845 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2846 | return 1; | |
2847 | ||
2848 | /* Also check for non-exact match. In this, we mask out the AS | |
2849 | * and | |
2850 | * only check on the local-admin sub-field. This is to | |
2851 | * facilitate using | |
2852 | * VNI as the RT for EBGP peering too. | |
2853 | */ | |
2854 | irt = NULL; | |
2855 | if (type == ECOMMUNITY_ENCODE_AS | |
2856 | || type == ECOMMUNITY_ENCODE_AS4 | |
2857 | || type == ECOMMUNITY_ENCODE_IP) { | |
2858 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2859 | mask_ecom_global_admin(&eval_tmp, eval); | |
2860 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2861 | } | |
5d9cbca2 | 2862 | if (irt) |
5ba238b7 MK |
2863 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2864 | return 1; | |
2865 | } | |
2866 | ||
2867 | return 0; | |
2868 | } | |
2869 | ||
128ea8ab | 2870 | /* |
2871 | * Given a route entry and a VNI, see if this route entry should be | |
2872 | * imported into the VNI i.e., RTs match. | |
2873 | */ | |
d62a17ae | 2874 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2875 | struct bgp_path_info *pi) |
d62a17ae | 2876 | { |
40381db7 | 2877 | struct attr *attr = pi->attr; |
d62a17ae | 2878 | struct ecommunity *ecom; |
2879 | int i; | |
2880 | ||
2881 | assert(attr); | |
2882 | /* Route should have valid RT to be even considered. */ | |
2883 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2884 | return 0; | |
2885 | ||
2886 | ecom = attr->ecommunity; | |
2887 | if (!ecom || !ecom->size) | |
2888 | return 0; | |
2889 | ||
2890 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2891 | * matches, we're done. | |
2892 | */ | |
2893 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2894 | uint8_t *pnt; |
2895 | uint8_t type, sub_type; | |
d62a17ae | 2896 | struct ecommunity_val *eval; |
2897 | struct ecommunity_val eval_tmp; | |
2898 | struct irt_node *irt; | |
2899 | ||
2900 | /* Only deal with RTs */ | |
2901 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2902 | eval = (struct ecommunity_val *)(ecom->val | |
2903 | + (i * ECOMMUNITY_SIZE)); | |
2904 | type = *pnt++; | |
2905 | sub_type = *pnt++; | |
2906 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2907 | continue; | |
2908 | ||
2909 | /* See if this RT matches specified VNIs import RTs */ | |
2910 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2911 | if (irt) |
d62a17ae | 2912 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2913 | return 1; | |
2914 | ||
2915 | /* Also check for non-exact match. In this, we mask out the AS | |
2916 | * and | |
2917 | * only check on the local-admin sub-field. This is to | |
2918 | * facilitate using | |
2919 | * VNI as the RT for EBGP peering too. | |
2920 | */ | |
2921 | irt = NULL; | |
2922 | if (type == ECOMMUNITY_ENCODE_AS | |
2923 | || type == ECOMMUNITY_ENCODE_AS4 | |
2924 | || type == ECOMMUNITY_ENCODE_IP) { | |
2925 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2926 | mask_ecom_global_admin(&eval_tmp, eval); | |
2927 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2928 | } | |
b1ab0dfe | 2929 | if (irt) |
d62a17ae | 2930 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2931 | return 1; | |
2932 | } | |
2933 | ||
2934 | return 0; | |
128ea8ab | 2935 | } |
2936 | ||
50f74cf1 | 2937 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2938 | struct evpnes *es, | |
2939 | int install) | |
2940 | { | |
2941 | int ret; | |
2942 | afi_t afi; | |
2943 | safi_t safi; | |
2944 | char buf[PREFIX_STRLEN]; | |
2945 | char buf1[ESI_STR_LEN]; | |
2946 | struct bgp_node *rd_rn, *rn; | |
2947 | struct bgp_table *table; | |
40381db7 | 2948 | struct bgp_path_info *pi; |
50f74cf1 | 2949 | |
2950 | afi = AFI_L2VPN; | |
2951 | safi = SAFI_EVPN; | |
2952 | ||
2bb9eff4 DS |
2953 | /* |
2954 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2955 | * imported into this VRF. Note that we need to loop through all global |
2956 | * routes to determine which route matches the import rt on vrf | |
2957 | */ | |
2958 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2959 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 2960 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 2961 | if (!table) |
2962 | continue; | |
2963 | ||
2964 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2965 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2966 | ||
6f94b685 DS |
2967 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
2968 | pi = pi->next) { | |
2bb9eff4 DS |
2969 | /* |
2970 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2971 | * this ES. |
2972 | */ | |
40381db7 DS |
2973 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2974 | && pi->type == ZEBRA_ROUTE_BGP | |
2975 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 2976 | continue; |
2977 | ||
2bb9eff4 DS |
2978 | if (!is_prefix_matching_for_es(evp, es)) |
2979 | continue; | |
50f74cf1 | 2980 | |
2bb9eff4 DS |
2981 | if (install) |
2982 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 2983 | bgp, es, evp, pi); |
2bb9eff4 DS |
2984 | else |
2985 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 2986 | bgp, es, evp, pi); |
2bb9eff4 DS |
2987 | |
2988 | if (ret) { | |
af4c2728 | 2989 | flog_err( |
e50f7cfd | 2990 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
2991 | "Failed to %s EVPN %s route in ESI %s", |
2992 | install ? "install" | |
2993 | : "uninstall", | |
2994 | prefix2str(evp, buf, | |
2995 | sizeof(buf)), | |
2996 | esi_to_str(&es->esi, buf1, | |
2997 | sizeof(buf1))); | |
2998 | return ret; | |
50f74cf1 | 2999 | } |
3000 | } | |
3001 | } | |
3002 | } | |
3003 | return 0; | |
3004 | } | |
3005 | ||
47bf0432 CS |
3006 | /* This API will scan evpn routes for checking attribute's rmac |
3007 | * macthes with bgp instance router mac. It avoid installing | |
3008 | * route into bgp vrf table and remote rmac in bridge table. | |
3009 | */ | |
3010 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
3011 | struct prefix_evpn *evp, | |
3012 | struct bgp_path_info *pi) | |
3013 | { | |
3014 | /* evpn route could have learnt prior to L3vni has come up, | |
3015 | * perform rmac check before installing route and | |
3016 | * remote router mac. | |
3017 | * The route will be removed from global bgp table once | |
3018 | * SVI comes up with MAC and stored in hash, triggers | |
3019 | * bgp_mac_rescan_all_evpn_tables. | |
3020 | */ | |
3021 | if (pi->attr && | |
3022 | memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { | |
3023 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { | |
3024 | char buf1[PREFIX_STRLEN]; | |
3025 | char attr_str[BUFSIZ] = {0}; | |
3026 | ||
3027 | bgp_dump_attr(pi->attr, attr_str, BUFSIZ); | |
3028 | ||
3029 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
3030 | __func__, bgp_vrf->vrf_id, | |
3031 | prefix2str(evp, buf1, sizeof(buf1)), | |
3032 | attr_str); | |
3033 | } | |
3034 | ||
3035 | return 1; | |
3036 | } | |
3037 | ||
3038 | return 0; | |
3039 | } | |
3040 | ||
5ba238b7 MK |
3041 | /* |
3042 | * Install or uninstall mac-ip routes are appropriate for this | |
3043 | * particular VRF. | |
3044 | */ | |
996c9314 | 3045 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3046 | { |
3047 | afi_t afi; | |
3048 | safi_t safi; | |
3049 | struct bgp_node *rd_rn, *rn; | |
3050 | struct bgp_table *table; | |
40381db7 | 3051 | struct bgp_path_info *pi; |
5ba238b7 MK |
3052 | int ret; |
3053 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 3054 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3055 | |
3056 | afi = AFI_L2VPN; | |
3057 | safi = SAFI_EVPN; | |
5e53dce3 T |
3058 | bgp_evpn = bgp_get_evpn(); |
3059 | if (!bgp_evpn) | |
5ba238b7 MK |
3060 | return -1; |
3061 | ||
3062 | /* Walk entire global routing table and evaluate routes which could be | |
3063 | * imported into this VRF. Note that we need to loop through all global | |
3064 | * routes to determine which route matches the import rt on vrf | |
3065 | */ | |
5e53dce3 | 3066 | for (rd_rn = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_rn; |
5ba238b7 | 3067 | rd_rn = bgp_route_next(rd_rn)) { |
67009e22 | 3068 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
3069 | if (!table) |
3070 | continue; | |
3071 | ||
3072 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3073 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3074 | ||
1eb88002 | 3075 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3076 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3077 | || evp->prefix.route_type | |
3078 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3079 | continue; |
3080 | ||
1eb88002 | 3081 | /* if not a mac+ip route skip this route */ |
3714a385 | 3082 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3083 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3084 | continue; |
3085 | ||
6f94b685 DS |
3086 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3087 | pi = pi->next) { | |
5ba238b7 | 3088 | /* Consider "valid" remote routes applicable for |
523cafc4 | 3089 | * this VRF. |
3090 | */ | |
40381db7 DS |
3091 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3092 | && pi->type == ZEBRA_ROUTE_BGP | |
3093 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3094 | continue; |
3095 | ||
40381db7 | 3096 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
3097 | if (bgp_evpn_route_rmac_self_check( |
3098 | bgp_vrf, evp, pi)) | |
3099 | continue; | |
3100 | ||
5ba238b7 | 3101 | if (install) |
996c9314 | 3102 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3103 | bgp_vrf, evp, pi); |
5ba238b7 | 3104 | else |
996c9314 | 3105 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3106 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3107 | |
3108 | if (ret) { | |
af4c2728 | 3109 | flog_err( |
e50f7cfd | 3110 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3111 | "Failed to %s EVPN %s route in VRF %s", |
3112 | install ? "install" | |
3113 | : "uninstall", | |
3114 | prefix2str(evp, buf, | |
3115 | sizeof(buf)), | |
996c9314 LB |
3116 | vrf_id_to_name( |
3117 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3118 | return ret; |
3119 | } | |
3120 | } | |
3121 | } | |
3122 | } | |
3123 | } | |
3124 | ||
3125 | return 0; | |
3126 | } | |
3127 | ||
128ea8ab | 3128 | /* |
3129 | * Install or uninstall routes of specified type that are appropriate for this | |
3130 | * particular VNI. | |
3131 | */ | |
d62a17ae | 3132 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3133 | struct bgpevpn *vpn, | |
3134 | bgp_evpn_route_type rtype, | |
3135 | int install) | |
3136 | { | |
0291c246 MK |
3137 | afi_t afi; |
3138 | safi_t safi; | |
3139 | struct bgp_node *rd_rn, *rn; | |
3140 | struct bgp_table *table; | |
40381db7 | 3141 | struct bgp_path_info *pi; |
0291c246 | 3142 | int ret; |
d62a17ae | 3143 | |
3144 | afi = AFI_L2VPN; | |
3145 | safi = SAFI_EVPN; | |
3146 | ||
3147 | /* Walk entire global routing table and evaluate routes which could be | |
3148 | * imported into this VPN. Note that we cannot just look at the routes | |
3149 | * for | |
3150 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3151 | * RD. | |
3152 | */ | |
3153 | /* EVPN routes are a 2-level table. */ | |
3154 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3155 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3156 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3157 | if (!table) |
3158 | continue; | |
3159 | ||
3160 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3161 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3162 | ||
3163 | if (evp->prefix.route_type != rtype) | |
3164 | continue; | |
3165 | ||
6f94b685 DS |
3166 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3167 | pi = pi->next) { | |
d62a17ae | 3168 | /* Consider "valid" remote routes applicable for |
3169 | * this VNI. */ | |
40381db7 DS |
3170 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3171 | && pi->type == ZEBRA_ROUTE_BGP | |
3172 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3173 | continue; |
3174 | ||
40381db7 | 3175 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3176 | if (install) |
3177 | ret = install_evpn_route_entry( | |
40381db7 | 3178 | bgp, vpn, evp, pi); |
d62a17ae | 3179 | else |
3180 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3181 | bgp, vpn, evp, pi); |
d62a17ae | 3182 | |
3183 | if (ret) { | |
af4c2728 | 3184 | flog_err( |
e50f7cfd | 3185 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3186 | "%u: Failed to %s EVPN %s route in VNI %u", |
3187 | bgp->vrf_id, | |
3188 | install ? "install" | |
3189 | : "uninstall", | |
3190 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3191 | ? "MACIP" | |
3192 | : "IMET", | |
3193 | vpn->vni); | |
3194 | return ret; | |
3195 | } | |
3196 | } | |
3197 | } | |
3198 | } | |
3199 | } | |
3200 | ||
3201 | return 0; | |
128ea8ab | 3202 | } |
3203 | ||
50f74cf1 | 3204 | /* Install any existing remote ES routes applicable for this ES into its routing |
3205 | * table. This is invoked when ES comes up. | |
3206 | */ | |
3207 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3208 | { | |
3209 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3210 | } | |
3211 | ||
3212 | ||
5ba238b7 | 3213 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3214 | * is invoked upon l3vni-add or l3vni import rt change |
3215 | */ | |
5ba238b7 MK |
3216 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3217 | { | |
3218 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3219 | return 0; | |
3220 | } | |
3221 | ||
128ea8ab | 3222 | /* |
3223 | * Install any existing remote routes applicable for this VNI into its | |
3224 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3225 | * RT is changed. | |
3226 | */ | |
d62a17ae | 3227 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3228 | { |
d62a17ae | 3229 | int ret; |
128ea8ab | 3230 | |
d62a17ae | 3231 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3232 | * for this VNI. | |
3233 | */ | |
3234 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3235 | 1); | |
3236 | if (ret) | |
3237 | return ret; | |
128ea8ab | 3238 | |
d62a17ae | 3239 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3240 | 1); | |
128ea8ab | 3241 | } |
3242 | ||
5ba238b7 MK |
3243 | /* uninstall routes from l3vni vrf. */ |
3244 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3245 | { | |
3246 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3247 | return 0; | |
3248 | } | |
3249 | ||
90e60aa7 | 3250 | /* |
3251 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3252 | * this is invoked is upon an import RT change. | |
3253 | */ | |
d62a17ae | 3254 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3255 | { |
d62a17ae | 3256 | int ret; |
90e60aa7 | 3257 | |
d62a17ae | 3258 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3259 | * applicable | |
3260 | * for this VNI. | |
3261 | */ | |
3262 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3263 | 0); | |
3264 | if (ret) | |
3265 | return ret; | |
90e60aa7 | 3266 | |
d62a17ae | 3267 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3268 | 0); | |
90e60aa7 | 3269 | } |
3270 | ||
50f74cf1 | 3271 | /* Install or unistall route in ES */ |
3272 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3273 | afi_t afi, safi_t safi, | |
3274 | struct prefix_evpn *evp, | |
40381db7 | 3275 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3276 | { |
3277 | int ret = 0; | |
3278 | char buf[ESI_STR_LEN]; | |
3279 | ||
3280 | if (install) | |
40381db7 | 3281 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3282 | else |
40381db7 | 3283 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3284 | |
3285 | if (ret) { | |
af4c2728 | 3286 | flog_err( |
e50f7cfd | 3287 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3288 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3289 | install ? "install" : "uninstall", "ES", | |
3290 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3291 | return ret; |
3292 | } | |
3293 | return 0; | |
3294 | } | |
3295 | ||
d3135ba3 | 3296 | /* |
3297 | * Install or uninstall route in matching VRFs (list). | |
3298 | */ | |
3299 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3300 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3301 | struct bgp_path_info *pi, |
d3135ba3 | 3302 | struct list *vrfs, int install) |
3303 | { | |
3304 | char buf[PREFIX2STR_BUFFER]; | |
3305 | struct bgp *bgp_vrf; | |
3306 | struct listnode *node, *nnode; | |
3307 | ||
90264d64 | 3308 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3309 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3310 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3311 | return 0; |
3312 | ||
90264d64 | 3313 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3314 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3315 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3316 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3317 | return 0; |
3318 | ||
d3135ba3 | 3319 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3320 | int ret; | |
3321 | ||
3322 | if (install) | |
40381db7 | 3323 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3324 | else |
996c9314 | 3325 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3326 | pi); |
d3135ba3 | 3327 | |
3328 | if (ret) { | |
e50f7cfd | 3329 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3330 | "%u: Failed to %s prefix %s in VRF %s", |
3331 | bgp_def->vrf_id, | |
3332 | install ? "install" : "uninstall", | |
3333 | prefix2str(evp, buf, sizeof(buf)), | |
3334 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3335 | return ret; |
3336 | } | |
3337 | } | |
3338 | ||
3339 | return 0; | |
3340 | } | |
3341 | ||
128ea8ab | 3342 | /* |
3343 | * Install or uninstall route in matching VNIs (list). | |
3344 | */ | |
d62a17ae | 3345 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3346 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3347 | struct bgp_path_info *pi, |
d62a17ae | 3348 | struct list *vnis, int install) |
128ea8ab | 3349 | { |
d62a17ae | 3350 | struct bgpevpn *vpn; |
3351 | struct listnode *node, *nnode; | |
128ea8ab | 3352 | |
d62a17ae | 3353 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3354 | int ret; | |
128ea8ab | 3355 | |
d62a17ae | 3356 | if (!is_vni_live(vpn)) |
3357 | continue; | |
128ea8ab | 3358 | |
d62a17ae | 3359 | if (install) |
40381db7 | 3360 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3361 | else |
40381db7 | 3362 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3363 | |
d62a17ae | 3364 | if (ret) { |
1c50c1c0 QY |
3365 | flog_err(EC_BGP_EVPN_FAIL, |
3366 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3367 | bgp->vrf_id, install ? "install" : "uninstall", | |
3368 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3369 | ? "MACIP" | |
3370 | : "IMET", | |
3371 | vpn->vni); | |
d62a17ae | 3372 | return ret; |
3373 | } | |
3374 | } | |
128ea8ab | 3375 | |
d62a17ae | 3376 | return 0; |
128ea8ab | 3377 | } |
3378 | ||
3379 | /* | |
50f74cf1 | 3380 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3381 | */ |
d62a17ae | 3382 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3383 | struct prefix *p, |
40381db7 | 3384 | struct bgp_path_info *pi, int import) |
d62a17ae | 3385 | { |
3386 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3387 | struct attr *attr = pi->attr; |
d62a17ae | 3388 | struct ecommunity *ecom; |
3389 | int i; | |
3390 | ||
3391 | assert(attr); | |
3392 | ||
50f74cf1 | 3393 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3394 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3395 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3396 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3397 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3398 | return 0; |
3399 | ||
3400 | /* If we don't have Route Target, nothing much to do. */ | |
3401 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3402 | return 0; | |
3403 | ||
3404 | ecom = attr->ecommunity; | |
3405 | if (!ecom || !ecom->size) | |
3406 | return -1; | |
3407 | ||
50f74cf1 | 3408 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3409 | * attached to the route */ | |
d62a17ae | 3410 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3411 | uint8_t *pnt; |
3412 | uint8_t type, sub_type; | |
d62a17ae | 3413 | struct ecommunity_val *eval; |
3414 | struct ecommunity_val eval_tmp; | |
996c9314 | 3415 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3416 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3417 | struct evpnes *es; |
d62a17ae | 3418 | |
3419 | /* Only deal with RTs */ | |
3420 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3421 | eval = (struct ecommunity_val *)(ecom->val | |
3422 | + (i * ECOMMUNITY_SIZE)); | |
3423 | type = *pnt++; | |
3424 | sub_type = *pnt++; | |
3425 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3426 | continue; | |
3427 | ||
50f74cf1 | 3428 | /* |
3429 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3430 | * IMET route is imported into VNI table. | |
3431 | * prefix routes are imported into VRF table. | |
523cafc4 | 3432 | */ |
50f74cf1 | 3433 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3434 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3435 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3436 | |
50f74cf1 | 3437 | irt = lookup_import_rt(bgp, eval); |
3438 | if (irt) | |
40381db7 DS |
3439 | install_uninstall_route_in_vnis( |
3440 | bgp, afi, safi, evp, pi, irt->vnis, | |
3441 | import); | |
50f74cf1 | 3442 | |
3443 | vrf_irt = lookup_vrf_import_rt(eval); | |
3444 | if (vrf_irt) | |
40381db7 DS |
3445 | install_uninstall_route_in_vrfs( |
3446 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3447 | import); | |
50f74cf1 | 3448 | |
3449 | /* Also check for non-exact match. | |
3450 | * In this, we mask out the AS and | |
3451 | * only check on the local-admin sub-field. | |
3452 | * This is to facilitate using | |
3453 | * VNI as the RT for EBGP peering too. | |
3454 | */ | |
3455 | irt = NULL; | |
3456 | vrf_irt = NULL; | |
3457 | if (type == ECOMMUNITY_ENCODE_AS | |
3458 | || type == ECOMMUNITY_ENCODE_AS4 | |
3459 | || type == ECOMMUNITY_ENCODE_IP) { | |
3460 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3461 | mask_ecom_global_admin(&eval_tmp, eval); | |
3462 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3463 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3464 | } | |
3465 | ||
3466 | if (irt) | |
40381db7 DS |
3467 | install_uninstall_route_in_vnis( |
3468 | bgp, afi, safi, evp, pi, irt->vnis, | |
3469 | import); | |
50f74cf1 | 3470 | if (vrf_irt) |
40381db7 DS |
3471 | install_uninstall_route_in_vrfs( |
3472 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3473 | import); | |
50f74cf1 | 3474 | } |
3475 | ||
3476 | /* es route is imported into the es table */ | |
3477 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3478 | ||
3479 | /* we will match based on the entire esi to avoid | |
3480 | * imoort of an es route for esi2 into esi1 | |
3481 | */ | |
3482 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3483 | if (es && is_es_local(es)) | |
40381db7 DS |
3484 | install_uninstall_route_in_es( |
3485 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3486 | } |
d62a17ae | 3487 | } |
3488 | ||
3489 | return 0; | |
128ea8ab | 3490 | } |
3491 | ||
2bb9eff4 DS |
3492 | /* |
3493 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3494 | * routes | |
3495 | */ | |
80b140af MK |
3496 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3497 | { | |
5fd9c12b KA |
3498 | /* Delete ipv4 default route and withdraw from peers */ |
3499 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3500 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3501 | SAFI_UNICAST, false); | |
3502 | ||
80b140af | 3503 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3504 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3505 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3506 | |
5fd9c12b KA |
3507 | /* Delete ipv6 default route and withdraw from peers */ |
3508 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3509 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3510 | SAFI_UNICAST, false); | |
3511 | ||
80b140af | 3512 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3513 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3514 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3515 | } |
3516 | ||
2bb9eff4 DS |
3517 | /* |
3518 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3519 | * routes | |
3520 | */ | |
80b140af MK |
3521 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3522 | { | |
3523 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3524 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3525 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3526 | |
5fd9c12b KA |
3527 | /* update ipv4 default route and withdraw from peers */ |
3528 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3529 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3530 | SAFI_UNICAST, true); | |
3531 | ||
80b140af | 3532 | /* update all ipv6 routes */ |
fdf19f06 MK |
3533 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3534 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3535 | |
3536 | /* update ipv6 default route and withdraw from peers */ | |
3537 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3538 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3539 | SAFI_UNICAST, true); | |
3540 | ||
80b140af MK |
3541 | } |
3542 | ||
676f83b9 | 3543 | /* |
3544 | * update and advertise local routes for a VRF as type-5 routes. | |
3545 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3546 | * done in the global route table using the routes which already exist in the | |
3547 | * VRF routing table | |
3548 | */ | |
80b140af | 3549 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3550 | { |
80b140af MK |
3551 | /* skip if the RD is configured */ |
3552 | if (is_vrf_rd_configured(bgp_vrf)) | |
3553 | return; | |
3554 | ||
3555 | /* derive the RD for the VRF based on new router-id */ | |
3556 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3557 | ||
3558 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3559 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3560 | } |
3561 | ||
3562 | /* | |
3563 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3564 | * This is invoked upon VRF RD change. The processing is done only from global | |
3565 | * table. | |
3566 | */ | |
80b140af | 3567 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3568 | { |
80b140af MK |
3569 | /* skip if the RD is configured */ |
3570 | if (is_vrf_rd_configured(bgp_vrf)) | |
3571 | return; | |
3572 | ||
3573 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3574 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3575 | } |
3576 | ||
90e60aa7 | 3577 | /* |
3578 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3579 | * change. Note that the processing is done only on the global route table | |
3580 | * using routes that already exist in the per-VNI table. | |
3581 | */ | |
d62a17ae | 3582 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3583 | { | |
3584 | struct prefix_evpn p; | |
3585 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3586 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3587 | struct attr *attr; |
3588 | afi_t afi = AFI_L2VPN; | |
3589 | safi_t safi = SAFI_EVPN; | |
3590 | ||
3591 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3592 | * attributes to create and advertise the type-3 route for this VNI | |
3593 | * in the global table. | |
fd069644 DS |
3594 | * |
3595 | * RT-3 only if doing head-end replication | |
d62a17ae | 3596 | */ |
833b8a50 AK |
3597 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3598 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
3599 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
3600 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3601 | if (!rn) /* unexpected */ | |
3602 | return 0; | |
6f94b685 | 3603 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3604 | if (pi->peer == bgp->peer_self && |
3605 | pi->type == ZEBRA_ROUTE_BGP | |
3606 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3607 | break; | |
3608 | if (!pi) /* unexpected */ | |
3609 | return 0; | |
3610 | attr = pi->attr; | |
d62a17ae | 3611 | |
fd069644 DS |
3612 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3613 | (struct prefix *)&p, &vpn->prd); | |
3614 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3615 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3616 | |
fd069644 DS |
3617 | /* Schedule for processing and unlock node. */ |
3618 | bgp_process(bgp, global_rn, afi, safi); | |
3619 | bgp_unlock_node(global_rn); | |
3620 | } | |
d62a17ae | 3621 | |
3622 | /* Now, walk this VNI's route table and use the route and its attribute | |
3623 | * to create and schedule route in global table. | |
3624 | */ | |
3625 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3626 | rn = bgp_route_next(rn)) { | |
3627 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3628 | ||
3629 | /* Identify MAC-IP local routes. */ | |
3630 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3631 | continue; | |
3632 | ||
6f94b685 | 3633 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3634 | if (pi->peer == bgp->peer_self |
3635 | && pi->type == ZEBRA_ROUTE_BGP | |
3636 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3637 | break; |
40381db7 | 3638 | if (!pi) |
d62a17ae | 3639 | continue; |
3640 | ||
3641 | /* Create route in global routing table using this route entry's | |
3642 | * attribute. | |
3643 | */ | |
40381db7 | 3644 | attr = pi->attr; |
d62a17ae | 3645 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3646 | (struct prefix *)evp, &vpn->prd); | |
3647 | assert(global_rn); | |
3648 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3649 | &global_pi, 0, |
f07e1c99 | 3650 | mac_mobility_seqnum(attr)); |
d62a17ae | 3651 | |
3652 | /* Schedule for processing and unlock node. */ | |
3653 | bgp_process(bgp, global_rn, afi, safi); | |
3654 | bgp_unlock_node(global_rn); | |
3655 | } | |
3656 | ||
3657 | return 0; | |
90e60aa7 | 3658 | } |
3659 | ||
3660 | /* | |
3661 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3662 | * table. Invoked upon router-id change. | |
3663 | */ | |
d62a17ae | 3664 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3665 | { |
d62a17ae | 3666 | int ret; |
3667 | struct prefix_evpn p; | |
3668 | struct bgp_node *global_rn; | |
40381db7 | 3669 | struct bgp_path_info *pi; |
d62a17ae | 3670 | afi_t afi = AFI_L2VPN; |
3671 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3672 | |
d62a17ae | 3673 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3674 | * for this VNI - from the global table. | |
3675 | */ | |
3676 | ret = delete_global_type2_routes(bgp, vpn); | |
3677 | if (ret) | |
3678 | return ret; | |
90e60aa7 | 3679 | |
d62a17ae | 3680 | /* Remove type-3 route for this VNI from global table. */ |
3681 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3682 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3683 | (struct prefix *)&p, &vpn->prd); | |
3684 | if (global_rn) { | |
3685 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3686 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3687 | |
d62a17ae | 3688 | /* Schedule for processing - withdraws to peers happen from |
3689 | * this table. | |
3690 | */ | |
40381db7 | 3691 | if (pi) |
d62a17ae | 3692 | bgp_process(bgp, global_rn, afi, safi); |
3693 | bgp_unlock_node(global_rn); | |
3694 | } | |
90e60aa7 | 3695 | |
d62a17ae | 3696 | return 0; |
90e60aa7 | 3697 | } |
3698 | ||
2d48ee25 | 3699 | /* |
3700 | * Handle router-id change. Update and advertise local routes corresponding | |
3701 | * to this VNI from peers. Note that this is invoked after updating the | |
3702 | * router-id. The routes in the per-VNI table are used to create routes in | |
3703 | * the global table and schedule them. | |
3704 | */ | |
e3b78da8 | 3705 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3706 | { |
e3b78da8 | 3707 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3708 | |
d62a17ae | 3709 | /* Skip VNIs with configured RD. */ |
3710 | if (is_rd_configured(vpn)) | |
3711 | return; | |
2d48ee25 | 3712 | |
d62a17ae | 3713 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3714 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3715 | } |
3716 | ||
3717 | /* | |
3718 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3719 | * to this VNI from peers. Note that this is invoked prior to updating | |
3720 | * the router-id and is done only on the global route table, the routes | |
3721 | * are needed in the per-VNI table to re-advertise with new router id. | |
3722 | */ | |
e3b78da8 | 3723 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3724 | { |
e3b78da8 | 3725 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3726 | |
d62a17ae | 3727 | /* Skip VNIs with configured RD. */ |
3728 | if (is_rd_configured(vpn)) | |
3729 | return; | |
2d48ee25 | 3730 | |
d62a17ae | 3731 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3732 | } |
3733 | ||
fd069644 DS |
3734 | /* |
3735 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3736 | * This is invoked upon flooding mode changing to head-end replication. | |
3737 | */ | |
e3b78da8 | 3738 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3739 | { |
e3b78da8 | 3740 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3741 | struct bgp *bgp = data; |
3742 | struct prefix_evpn p; | |
3743 | ||
833b8a50 AK |
3744 | if (!vpn || !is_vni_live(vpn) || |
3745 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3746 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3747 | return; |
3748 | ||
3749 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3750 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3751 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3752 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3753 | } | |
3754 | ||
3755 | /* | |
3756 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3757 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3758 | */ | |
e3b78da8 | 3759 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3760 | { |
e3b78da8 | 3761 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3762 | struct bgp *bgp = data; |
3763 | struct prefix_evpn p; | |
3764 | ||
3765 | if (!vpn || !is_vni_live(vpn)) | |
3766 | return; | |
3767 | ||
3768 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3769 | delete_evpn_route(bgp, vpn, &p); | |
3770 | } | |
3771 | ||
128ea8ab | 3772 | /* |
3773 | * Process received EVPN type-2 route (advertise or withdraw). | |
3774 | */ | |
d62a17ae | 3775 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3776 | struct attr *attr, uint8_t *pfx, int psize, |
3777 | uint32_t addpath_id) | |
d62a17ae | 3778 | { |
3779 | struct prefix_rd prd; | |
3780 | struct prefix_evpn p; | |
554cd77a | 3781 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3782 | uint8_t ipaddr_len; |
3783 | uint8_t macaddr_len; | |
b57ba6d2 | 3784 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3785 | uint32_t num_labels = 0; |
554cd77a | 3786 | uint32_t eth_tag; |
d62a17ae | 3787 | int ret; |
3788 | ||
3789 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3790 | * additional 3 bytes if there is a second label (VNI): | |
3791 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3792 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3793 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3794 | */ | |
3795 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3796 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3797 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3798 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3799 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3800 | return -1; |
3801 | } | |
3802 | ||
554cd77a VB |
3803 | memset(&evpn, 0, sizeof(evpn)); |
3804 | ||
d62a17ae | 3805 | /* Make prefix_rd */ |
3806 | prd.family = AF_UNSPEC; | |
3807 | prd.prefixlen = 64; | |
3808 | memcpy(&prd.val, pfx, 8); | |
3809 | pfx += 8; | |
3810 | ||
3811 | /* Make EVPN prefix. */ | |
3812 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3813 | p.family = AF_EVPN; |
50f74cf1 | 3814 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3815 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3816 | ||
554cd77a VB |
3817 | /* Copy Ethernet Seg Identifier */ |
3818 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3819 | pfx += ESI_LEN; | |
d62a17ae | 3820 | |
554cd77a VB |
3821 | /* Copy Ethernet Tag */ |
3822 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3823 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3824 | pfx += 4; |
3825 | ||
3826 | /* Get the MAC Addr len */ | |
3827 | macaddr_len = *pfx++; | |
3828 | ||
3829 | /* Get the MAC Addr */ | |
28328ea9 | 3830 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3831 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3832 | pfx += ETH_ALEN; |
d62a17ae | 3833 | } else { |
af4c2728 | 3834 | flog_err( |
e50f7cfd | 3835 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3836 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3837 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3838 | return -1; | |
3839 | } | |
3840 | ||
3841 | ||
3842 | /* Get the IP. */ | |
3843 | ipaddr_len = *pfx++; | |
3844 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3845 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3846 | flog_err( |
e50f7cfd | 3847 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3848 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3849 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3850 | return -1; | |
3851 | } | |
3852 | ||
3853 | if (ipaddr_len) { | |
3854 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3855 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3856 | ? IPADDR_V4 |
3857 | : IPADDR_V6; | |
3714a385 | 3858 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3859 | } |
3860 | pfx += ipaddr_len; | |
3861 | ||
b57ba6d2 MK |
3862 | /* Get the VNI(s). Stored as bytes here. */ |
3863 | num_labels++; | |
3864 | memset(label, 0, sizeof(label)); | |
3865 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3866 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3867 | psize -= (33 + ipaddr_len); |
3868 | /* Do we have a second VNI? */ | |
3869 | if (psize) { | |
3870 | num_labels++; | |
3871 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3872 | /* |
3873 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3874 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3875 | * the next field | |
6b11bd8d | 3876 | */ |
b57ba6d2 | 3877 | } |
d62a17ae | 3878 | |
3879 | /* Process the route. */ | |
3880 | if (attr) | |
3881 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3882 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3883 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3884 | else |
3885 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3886 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3887 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3888 | return ret; |
128ea8ab | 3889 | } |
3890 | ||
3891 | /* | |
3892 | * Process received EVPN type-3 route (advertise or withdraw). | |
3893 | */ | |
d62a17ae | 3894 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3895 | struct attr *attr, uint8_t *pfx, int psize, |
3896 | uint32_t addpath_id) | |
d62a17ae | 3897 | { |
3898 | struct prefix_rd prd; | |
3899 | struct prefix_evpn p; | |
d7c0a89a | 3900 | uint8_t ipaddr_len; |
554cd77a | 3901 | uint32_t eth_tag; |
d62a17ae | 3902 | int ret; |
3903 | ||
3904 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3905 | * IP len (1) and IP (4 or 16). | |
3906 | */ | |
3907 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3908 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3909 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3910 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3911 | return -1; |
3912 | } | |
3913 | ||
7fd077aa | 3914 | /* If PMSI is present, log if it is anything other than IR. |
3915 | * Note: We just simply ignore the values as it is not clear if | |
3916 | * doing anything else is better. | |
3917 | */ | |
3918 | if (attr && | |
3919 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
3920 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
3921 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3922 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
3923 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3924 | peer->bgp->vrf_id, peer->host, | |
3925 | attr->pmsi_tnl_type); | |
7fd077aa | 3926 | } |
3927 | } | |
3928 | ||
d62a17ae | 3929 | /* Make prefix_rd */ |
3930 | prd.family = AF_UNSPEC; | |
3931 | prd.prefixlen = 64; | |
3932 | memcpy(&prd.val, pfx, 8); | |
3933 | pfx += 8; | |
3934 | ||
3935 | /* Make EVPN prefix. */ | |
3936 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3937 | p.family = AF_EVPN; |
50f74cf1 | 3938 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3939 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3940 | ||
554cd77a VB |
3941 | /* Copy Ethernet Tag */ |
3942 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3943 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3944 | pfx += 4; |
3945 | ||
3946 | /* Get the IP. */ | |
3947 | ipaddr_len = *pfx++; | |
3948 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3949 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3950 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3951 | } else { |
af4c2728 | 3952 | flog_err( |
e50f7cfd | 3953 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3954 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3955 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3956 | return -1; | |
3957 | } | |
3958 | ||
3959 | /* Process the route. */ | |
3960 | if (attr) | |
3961 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3962 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3963 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3964 | else |
3965 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3966 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3967 | &prd, NULL, 0, NULL); |
d62a17ae | 3968 | return ret; |
128ea8ab | 3969 | } |
3970 | ||
50f74cf1 | 3971 | /* |
3972 | * Process received EVPN type-4 route (advertise or withdraw). | |
3973 | */ | |
3974 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3975 | struct attr *attr, uint8_t *pfx, int psize, | |
3976 | uint32_t addpath_id) | |
3977 | { | |
3978 | int ret; | |
3979 | esi_t esi; | |
3980 | uint8_t ipaddr_len; | |
3981 | struct in_addr vtep_ip; | |
3982 | struct prefix_rd prd; | |
3983 | struct prefix_evpn p; | |
3984 | ||
3985 | /* Type-4 route should be either 23 or 35 bytes | |
3986 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3987 | */ | |
3988 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 3989 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3990 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
3991 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 3992 | return -1; |
3993 | } | |
3994 | ||
3995 | /* Make prefix_rd */ | |
3996 | prd.family = AF_UNSPEC; | |
3997 | prd.prefixlen = 64; | |
3998 | memcpy(&prd.val, pfx, 8); | |
3999 | pfx += 8; | |
4000 | ||
4001 | /* get the ESI */ | |
4002 | memcpy(&esi, pfx, ESI_BYTES); | |
4003 | pfx += ESI_BYTES; | |
4004 | ||
4005 | ||
4006 | /* Get the IP. */ | |
4007 | ipaddr_len = *pfx++; | |
4008 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
4009 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
4010 | } else { | |
af4c2728 | 4011 | flog_err( |
e50f7cfd | 4012 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 4013 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
4014 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4015 | return -1; | |
4016 | } | |
4017 | ||
4018 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
4019 | /* Process the route. */ | |
4020 | if (attr) { | |
4021 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4022 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4023 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 4024 | } else { |
50f74cf1 | 4025 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4026 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4027 | &prd, NULL, 0, NULL); | |
4028 | } | |
4029 | return ret; | |
4030 | } | |
4031 | ||
4032 | ||
128ea8ab | 4033 | /* |
4034 | * Process received EVPN type-5 route (advertise or withdraw). | |
4035 | */ | |
d62a17ae | 4036 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4037 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4038 | uint32_t addpath_id) |
d62a17ae | 4039 | { |
4040 | struct prefix_rd prd; | |
4041 | struct prefix_evpn p; | |
4042 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4043 | uint8_t ippfx_len; |
4044 | uint32_t eth_tag; | |
b57ba6d2 | 4045 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4046 | int ret; |
4047 | ||
4048 | /* Type-5 route should be 34 or 58 bytes: | |
4049 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4050 | * GW (4 or 16) and VNI (3). | |
4051 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4052 | */ | |
4053 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4054 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4055 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4056 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4057 | return -1; |
4058 | } | |
4059 | ||
4060 | /* Make prefix_rd */ | |
4061 | prd.family = AF_UNSPEC; | |
4062 | prd.prefixlen = 64; | |
4063 | memcpy(&prd.val, pfx, 8); | |
4064 | pfx += 8; | |
4065 | ||
4066 | /* Make EVPN prefix. */ | |
4067 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4068 | p.family = AF_EVPN; |
50f74cf1 | 4069 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4070 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4071 | ||
4072 | /* Additional information outside of prefix - ESI and GW IP */ | |
4073 | memset(&evpn, 0, sizeof(evpn)); | |
4074 | ||
4075 | /* Fetch ESI */ | |
4076 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
4077 | pfx += 10; | |
4078 | ||
4079 | /* Fetch Ethernet Tag. */ | |
4080 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4081 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4082 | pfx += 4; |
4083 | ||
4084 | /* Fetch IP prefix length. */ | |
4085 | ippfx_len = *pfx++; | |
4086 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4087 | flog_err( |
e50f7cfd | 4088 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4089 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4090 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4091 | return -1; | |
4092 | } | |
3714a385 | 4093 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4094 | |
4095 | /* Determine IPv4 or IPv6 prefix */ | |
4096 | /* Since the address and GW are from the same family, this just becomes | |
4097 | * a simple check on the total size. | |
4098 | */ | |
4099 | if (psize == 34) { | |
3714a385 | 4100 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4101 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4102 | pfx += 4; |
4103 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4104 | pfx += 4; | |
d62a17ae | 4105 | } else { |
3714a385 | 4106 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4107 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4108 | pfx += 16; |
4109 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4110 | pfx += 16; | |
d62a17ae | 4111 | } |
4112 | ||
b57ba6d2 MK |
4113 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4114 | memset(&label, 0, sizeof(label)); | |
4115 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4116 | |
4117 | /* | |
4118 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4119 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4120 | * field | |
6b11bd8d | 4121 | */ |
d62a17ae | 4122 | |
4123 | /* Process the route. */ | |
f007bdce | 4124 | if (attr) |
d62a17ae | 4125 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4126 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4127 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4128 | else |
4129 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4130 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4131 | &prd, &label, 1, &evpn); |
d62a17ae | 4132 | |
4133 | return ret; | |
4134 | } | |
4135 | ||
4136 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 4137 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 4138 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 4139 | { |
4140 | int len; | |
4141 | char temp[16]; | |
4142 | struct evpn_addr *p_evpn_p; | |
4143 | ||
4144 | memset(&temp, 0, 16); | |
b03b8898 | 4145 | if (p->family != AF_EVPN) |
d62a17ae | 4146 | return; |
4147 | p_evpn_p = &(p->u.prefix_evpn); | |
4148 | ||
e9fc2840 | 4149 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4150 | IP and GW-IP have to be both ipv4 or ipv6 |
4151 | */ | |
3714a385 | 4152 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4153 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4154 | else |
e9fc2840 | 4155 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4156 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4157 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4158 | stream_put(s, prd->val, 8); | |
0af35d90 | 4159 | if (attr) |
d62a17ae | 4160 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4161 | else | |
4162 | stream_put(s, &temp, 10); | |
3714a385 | 4163 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4164 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4165 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4166 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4167 | else |
3714a385 | 4168 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4169 | if (attr) { |
3714a385 | 4170 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4171 | stream_put_ipv4(s, |
4172 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4173 | else | |
4174 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4175 | } else { | |
3714a385 | 4176 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4177 | stream_put_ipv4(s, 0); |
4178 | else | |
4179 | stream_put(s, &temp, 16); | |
4180 | } | |
4181 | ||
b57ba6d2 | 4182 | if (num_labels) |
d62a17ae | 4183 | stream_put(s, label, 3); |
4184 | else | |
4185 | stream_put3(s, 0); | |
128ea8ab | 4186 | } |
4187 | ||
4188 | /* | |
4189 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4190 | */ | |
e3b78da8 | 4191 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4192 | { |
e3b78da8 | 4193 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4194 | |
d62a17ae | 4195 | /* Remove EVPN routes and schedule for processing. */ |
4196 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4197 | |
d62a17ae | 4198 | /* Clear "live" flag and see if hash needs to be freed. */ |
4199 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4200 | if (!is_vni_configured(vpn)) | |
4201 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4202 | } |
4203 | ||
4204 | /* | |
4205 | * Free a VNI entry; iterator function called during cleanup. | |
4206 | */ | |
e3b78da8 | 4207 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4208 | { |
e3b78da8 | 4209 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4210 | |
d62a17ae | 4211 | delete_all_vni_routes(bgp, vpn); |
4212 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4213 | } |
4214 | ||
c581d8b0 MK |
4215 | /* |
4216 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4217 | */ | |
4218 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4219 | { | |
5e53dce3 | 4220 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4221 | |
c581d8b0 | 4222 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4223 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4224 | ||
4225 | /* Map RT to VRF */ | |
5e53dce3 T |
4226 | bgp_evpn = bgp_get_evpn(); |
4227 | if (!bgp_evpn) | |
10ebe1ab MK |
4228 | return; |
4229 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4230 | } |
4231 | ||
4232 | /* | |
4233 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4234 | */ | |
4235 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4236 | { | |
4237 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4238 | } | |
4239 | ||
4240 | /* | |
4241 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4242 | */ | |
4243 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4244 | { | |
4245 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4246 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4247 | } | |
4248 | ||
4249 | /* | |
4250 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4251 | */ | |
4252 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4253 | { | |
4254 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4255 | } | |
128ea8ab | 4256 | |
f1f8b53c MK |
4257 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4258 | { | |
5e53dce3 | 4259 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4260 | struct listnode *node = NULL; |
4261 | struct bgpevpn *vpn = NULL; | |
4262 | ||
5e53dce3 T |
4263 | bgp_evpn = bgp_get_evpn(); |
4264 | if (!bgp_evpn) | |
f1f8b53c MK |
4265 | return; |
4266 | ||
4992b4ae MK |
4267 | /* update all type-5 routes */ |
4268 | update_advertise_vrf_routes(bgp_vrf); | |
4269 | ||
4270 | /* update all type-2 routes */ | |
f1f8b53c | 4271 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4272 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4273 | } |
4274 | ||
bf1061d8 VB |
4275 | /* |
4276 | * Handle autort change for a given VNI. | |
4277 | */ | |
e3b78da8 | 4278 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4279 | { |
e3b78da8 | 4280 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4281 | |
bf1061d8 VB |
4282 | if (!is_import_rt_configured(vpn)) { |
4283 | if (is_vni_live(vpn)) | |
4284 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4285 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4286 | list_delete_all_node(vpn->import_rtl); |
4287 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4288 | if (is_vni_live(vpn)) | |
4289 | bgp_evpn_install_routes(bgp, vpn); | |
4290 | } | |
4291 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4292 | list_delete_all_node(vpn->export_rtl); |
4293 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4294 | if (is_vni_live(vpn)) | |
4295 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4296 | } | |
4297 | } | |
4298 | ||
128ea8ab | 4299 | /* |
4300 | * Public functions. | |
4301 | */ | |
4302 | ||
5424b7ba | 4303 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4304 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4305 | afi_t afi, safi_t safi) |
4306 | { | |
4307 | int ret = 0; | |
4308 | struct prefix_evpn evp; | |
4309 | char buf[PREFIX_STRLEN]; | |
4310 | ||
31310b25 | 4311 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4312 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4313 | if (ret) { | |
af4c2728 | 4314 | flog_err( |
e50f7cfd | 4315 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4316 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4317 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4318 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4319 | } |
4320 | } | |
4321 | ||
342dd0c6 | 4322 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4323 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4324 | { |
4325 | struct bgp_table *table = NULL; | |
4326 | struct bgp_node *rn = NULL; | |
40381db7 | 4327 | struct bgp_path_info *pi; |
342dd0c6 | 4328 | |
053905d2 | 4329 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4330 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
f106e3a7 | 4331 | /* Only care about "selected" routes. Also ensure that |
4332 | * these are routes that are injectable into EVPN. | |
4333 | */ | |
25f2ca53 | 4334 | /* TODO: Support for AddPath for EVPN. */ |
6f94b685 | 4335 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4336 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4337 | && is_route_injectable_into_evpn(pi)) { |
25f2ca53 | 4338 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4339 | afi, safi); | |
4340 | break; | |
4341 | } | |
4342 | } | |
4343 | } | |
5424b7ba | 4344 | } |
342dd0c6 | 4345 | |
5fd9c12b KA |
4346 | /* |
4347 | * evpn - enable advertisement of default g/w | |
4348 | */ | |
4349 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4350 | safi_t safi, bool add) | |
4351 | { | |
4352 | struct prefix ip_prefix; | |
4353 | ||
4354 | /* form the default prefix 0.0.0.0/0 */ | |
4355 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4356 | ip_prefix.family = afi2family(afi); | |
4357 | ||
4358 | if (add) { | |
4359 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4360 | NULL, afi, safi); | |
4361 | } else { | |
4362 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4363 | afi, safi); | |
4364 | } | |
4365 | } | |
4366 | ||
4367 | ||
2f69f6d3 | 4368 | /* |
4369 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4370 | * to this function correspond to those of the source IP prefix (best | |
4371 | * path in the case of the attr. In the case of a local prefix (when we | |
4372 | * are advertising local subnets), the src_attr will be NULL. | |
4373 | */ | |
31310b25 | 4374 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4375 | struct attr *src_attr, afi_t afi, |
4376 | safi_t safi) | |
5424b7ba MK |
4377 | { |
4378 | int ret = 0; | |
4379 | struct prefix_evpn evp; | |
4380 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4381 | |
31310b25 | 4382 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4383 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4384 | if (ret) | |
e50f7cfd | 4385 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4386 | "%u: Failed to create type-5 route for prefix %s", |
4387 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4388 | } |
4389 | ||
2f69f6d3 | 4390 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4391 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4392 | * advertisement is enabled. | |
4393 | */ | |
996c9314 LB |
4394 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4395 | safi_t safi) | |
342dd0c6 | 4396 | { |
4397 | struct bgp_table *table = NULL; | |
4398 | struct bgp_node *rn = NULL; | |
40381db7 | 4399 | struct bgp_path_info *pi; |
342dd0c6 | 4400 | |
053905d2 | 4401 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4402 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4403 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4404 | * attribute. Also, ensure that the route is injectable |
4405 | * into EVPN. | |
2f69f6d3 | 4406 | * TODO: Support for AddPath for EVPN. |
4407 | */ | |
6f94b685 | 4408 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4409 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4410 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4411 | |
4412 | /* apply the route-map */ | |
4413 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4414 | int ret = 0; | |
4415 | ||
996c9314 LB |
4416 | ret = route_map_apply( |
4417 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4418 | .map, | |
40381db7 | 4419 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4420 | if (ret == RMAP_DENYMATCH) |
4421 | continue; | |
4422 | } | |
996c9314 | 4423 | bgp_evpn_advertise_type5_route( |
40381db7 | 4424 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4425 | break; |
4426 | } | |
4427 | } | |
31310b25 | 4428 | } |
342dd0c6 | 4429 | } |
4430 | ||
996c9314 | 4431 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4432 | { |
4433 | struct listnode *node, *nnode, *node_to_del; | |
4434 | struct ecommunity *ecom, *ecom_auto; | |
4435 | struct ecommunity_val eval; | |
4436 | ||
bf1061d8 VB |
4437 | if (bgp->advertise_autort_rfc8365) |
4438 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4439 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4440 | ||
4441 | ecom_auto = ecommunity_new(); | |
4442 | ecommunity_add_val(ecom_auto, &eval); | |
4443 | node_to_del = NULL; | |
4444 | ||
4445 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4446 | if (ecommunity_match(ecom, ecom_auto)) { | |
4447 | ecommunity_free(&ecom); | |
4448 | node_to_del = node; | |
4449 | } | |
4450 | } | |
4451 | ||
4452 | if (node_to_del) | |
4453 | list_delete_node(rtl, node_to_del); | |
4454 | ||
4455 | ecommunity_free(&ecom_auto); | |
4456 | } | |
4457 | ||
4458 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4459 | struct ecommunity *ecomadd) |
c581d8b0 | 4460 | { |
5ba238b7 MK |
4461 | /* uninstall routes from vrf */ |
4462 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4463 | |
4464 | /* Cleanup the RT to VRF mapping */ | |
4465 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4466 | ||
c581d8b0 MK |
4467 | /* Remove auto generated RT */ |
4468 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4469 | ||
4470 | /* Add the newly configured RT to RT list */ | |
4471 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4472 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4473 | ||
10ebe1ab MK |
4474 | /* map VRF to its RTs */ |
4475 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4476 | ||
5ba238b7 MK |
4477 | /* install routes matching the new VRF */ |
4478 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4479 | } |
4480 | ||
4481 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4482 | struct ecommunity *ecomdel) | |
4483 | { | |
4484 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4485 | struct ecommunity *ecom = NULL; | |
4486 | ||
5ba238b7 MK |
4487 | /* uninstall routes from vrf */ |
4488 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4489 | |
4490 | /* Cleanup the RT to VRF mapping */ | |
4491 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4492 | ||
c581d8b0 MK |
4493 | /* remove the RT from the RT list */ |
4494 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4495 | if (ecommunity_match(ecom, ecomdel)) { | |
4496 | ecommunity_free(&ecom); | |
4497 | node_to_del = node; | |
4498 | break; | |
4499 | } | |
4500 | } | |
4501 | ||
4502 | if (node_to_del) | |
4503 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4504 | ||
b3a4db3d | 4505 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4506 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4507 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4508 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4509 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4510 | } | |
4511 | ||
10ebe1ab MK |
4512 | /* map VRFs to its RTs */ |
4513 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4514 | ||
5ba238b7 MK |
4515 | /* install routes matching this new RT */ |
4516 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4517 | } |
4518 | ||
4519 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4520 | struct ecommunity *ecomadd) | |
4521 | { | |
4522 | /* remove auto-generated RT */ | |
4523 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4524 | ||
4525 | /* Add the new RT to the RT list */ | |
4526 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4527 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4528 | ||
f1f8b53c | 4529 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4530 | } |
4531 | ||
4532 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4533 | struct ecommunity *ecomdel) | |
4534 | { | |
4535 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4536 | struct ecommunity *ecom = NULL; | |
4537 | ||
4538 | /* Remove the RT from the RT list */ | |
4539 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4540 | if (ecommunity_match(ecom, ecomdel)) { | |
4541 | ecommunity_free(&ecom); | |
4542 | node_to_del = node; | |
4543 | break; | |
4544 | } | |
4545 | } | |
4546 | ||
4547 | if (node_to_del) | |
4548 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4549 | ||
1525e99f DS |
4550 | /* |
4551 | * Temporary assert to make SA happy. | |
4552 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4553 | * which means that SA is going to complain about | |
4554 | * the list_isempty call, which doesn't NULL check. | |
4555 | * So until we get this situation cleaned up, here | |
4556 | * we are. | |
4557 | */ | |
4558 | assert(bgp_vrf->vrf_export_rtl); | |
4559 | ||
c581d8b0 | 4560 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4561 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4562 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4563 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4564 | } | |
4565 | ||
f1f8b53c | 4566 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4567 | } |
4568 | ||
2d48ee25 | 4569 | /* |
4570 | * Handle change to BGP router id. This is invoked twice by the change | |
4571 | * handler, first before the router id has been changed and then after | |
4572 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4573 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4574 | * will result in the routes being re-advertised. |
4575 | */ | |
d62a17ae | 4576 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4577 | { |
676f83b9 | 4578 | if (withdraw) { |
4579 | ||
4580 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4581 | stored in the global table for this vrf |
4582 | */ | |
80b140af | 4583 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4584 | |
4585 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4586 | * L2-VNIs |
4587 | */ | |
d62a17ae | 4588 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4589 | (void (*)(struct hash_bucket *, |
d62a17ae | 4590 | void *))withdraw_router_id_vni, |
4591 | bgp); | |
676f83b9 | 4592 | } else { |
4593 | ||
4594 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4595 | * RD |
4596 | */ | |
80b140af | 4597 | update_router_id_vrf(bgp); |
676f83b9 | 4598 | |
4599 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4600 | * new RD |
4601 | */ | |
d62a17ae | 4602 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4603 | (void (*)(struct hash_bucket *, |
d62a17ae | 4604 | void *))update_router_id_vni, |
4605 | bgp); | |
676f83b9 | 4606 | } |
2d48ee25 | 4607 | } |
4608 | ||
bf1061d8 VB |
4609 | /* |
4610 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4611 | */ | |
4612 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4613 | { | |
4614 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4615 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4616 | void*))update_autort_vni, |
4617 | bgp); | |
4618 | } | |
4619 | ||
90e60aa7 | 4620 | /* |
4621 | * Handle change to export RT - update and advertise local routes. | |
4622 | */ | |
d62a17ae | 4623 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4624 | { |
d62a17ae | 4625 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4626 | } |
4627 | ||
996c9314 | 4628 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4629 | { |
4630 | if (withdraw) | |
4631 | delete_withdraw_vrf_routes(bgp_vrf); | |
4632 | else | |
4633 | update_advertise_vrf_routes(bgp_vrf); | |
4634 | } | |
4635 | ||
90e60aa7 | 4636 | /* |
4637 | * Handle change to RD. This is invoked twice by the change handler, | |
4638 | * first before the RD has been changed and then after the RD has | |
4639 | * been changed. The first invocation will result in local routes | |
4640 | * of this VNI being deleted and withdrawn and the next will result | |
4641 | * in the routes being re-advertised. | |
4642 | */ | |
d62a17ae | 4643 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4644 | int withdraw) | |
90e60aa7 | 4645 | { |
d62a17ae | 4646 | if (withdraw) |
4647 | delete_withdraw_vni_routes(bgp, vpn); | |
4648 | else | |
4649 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4650 | } |
4651 | ||
4652 | /* | |
4653 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4654 | */ | |
d62a17ae | 4655 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4656 | { |
d62a17ae | 4657 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4658 | } |
4659 | ||
4660 | /* | |
4661 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4662 | * to Import RT. | |
4663 | */ | |
d62a17ae | 4664 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4665 | { |
d62a17ae | 4666 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4667 | } |
4668 | ||
b16031a2 | 4669 | /* |
b57ba6d2 | 4670 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4671 | */ |
d7c0a89a | 4672 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4673 | int len) |
b16031a2 | 4674 | { |
b57ba6d2 | 4675 | vni_t vni1, vni2; |
b16031a2 | 4676 | |
b57ba6d2 MK |
4677 | vni1 = label2vni(label); |
4678 | if (num_labels == 2) { | |
996c9314 | 4679 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4680 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4681 | } else | |
4682 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4683 | return buf; |
b16031a2 | 4684 | } |
4685 | ||
9c92b5f7 MK |
4686 | /* |
4687 | * Function to convert evpn route to json format. | |
4688 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4689 | */ | |
57f7feb6 | 4690 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4691 | { |
b682f6de | 4692 | char buf1[ETHER_ADDR_STRLEN]; |
4693 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4694 | |
b682f6de | 4695 | if (!json) |
4696 | return; | |
9c92b5f7 | 4697 | |
dff8f48d | 4698 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4699 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4700 | json_object_int_add(json, "ethTag", |
4701 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4702 | json_object_int_add(json, "ipLen", |
3714a385 | 4703 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4704 | ? IPV4_MAX_BITLEN |
4705 | : IPV6_MAX_BITLEN); | |
b682f6de | 4706 | json_object_string_add(json, "ip", |
3714a385 | 4707 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4708 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4709 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4710 | json_object_int_add(json, "routeType", |
4711 | p->prefix.route_type); | |
3714a385 | 4712 | json_object_int_add(json, "ethTag", |
4713 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4714 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4715 | json_object_string_add(json, "mac", | |
3714a385 | 4716 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4717 | buf1, |
4718 | sizeof(buf1))); | |
dff8f48d | 4719 | } else { |
d7c0a89a | 4720 | uint8_t family; |
dff8f48d | 4721 | |
3714a385 | 4722 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4723 | : AF_INET6; |
dff8f48d | 4724 | |
b682f6de | 4725 | json_object_int_add(json, "routeType", |
57f7feb6 | 4726 | p->prefix.route_type); |
3714a385 | 4727 | json_object_int_add(json, "ethTag", |
4728 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4729 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4730 | json_object_string_add(json, "mac", |
3714a385 | 4731 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4732 | buf1, |
4733 | sizeof(buf1))); | |
b682f6de | 4734 | json_object_int_add(json, "ipLen", |
3714a385 | 4735 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4736 | ? IPV4_MAX_BITLEN |
4737 | : IPV6_MAX_BITLEN); | |
4738 | json_object_string_add( | |
4739 | json, "ip", | |
3714a385 | 4740 | inet_ntop(family, |
4741 | &p->prefix.macip_addr.ip.ip.addr, | |
4742 | buf2, | |
57f7feb6 | 4743 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4744 | } |
4745 | } else { | |
4746 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4747 | } | |
9c92b5f7 MK |
4748 | } |
4749 | ||
520d5d76 | 4750 | /* |
4751 | * Function to convert evpn route to string. | |
4752 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4753 | */ | |
d62a17ae | 4754 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4755 | { | |
4756 | char buf1[ETHER_ADDR_STRLEN]; | |
4757 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4758 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4759 | |
4760 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4761 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4762 | p->prefix.imet_addr.eth_tag, |
4763 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4764 | : IPV6_MAX_BITLEN, |
3714a385 | 4765 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4766 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4767 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4768 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4769 | p->prefix.route_type, | |
3714a385 | 4770 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4771 | 8 * ETH_ALEN, |
3714a385 | 4772 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4773 | sizeof(buf1))); |
4774 | else { | |
d7c0a89a | 4775 | uint8_t family; |
d62a17ae | 4776 | |
3714a385 | 4777 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4778 | : AF_INET6; |
554cd77a VB |
4779 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4780 | p->prefix.route_type, | |
3714a385 | 4781 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4782 | 8 * ETH_ALEN, |
3714a385 | 4783 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4784 | sizeof(buf1)), |
4785 | family == AF_INET ? IPV4_MAX_BITLEN | |
4786 | : IPV6_MAX_BITLEN, | |
3714a385 | 4787 | inet_ntop(family, |
4788 | &p->prefix.macip_addr.ip.ip.addr, | |
4789 | buf2, | |
d62a17ae | 4790 | PREFIX2STR_BUFFER)); |
4791 | } | |
342dd0c6 | 4792 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4793 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4794 | p->prefix.route_type, | |
3714a385 | 4795 | p->prefix.prefix_addr.eth_tag, |
4796 | p->prefix.prefix_addr.ip_prefix_length, | |
4797 | is_evpn_prefix_ipaddr_v4(p) | |
4798 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4799 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4800 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4801 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4802 | p->prefix.route_type, | |
4803 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4804 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4805 | : IPV6_MAX_BITLEN, | |
4806 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4807 | } else { |
b03b8898 | 4808 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4809 | snprintf(buf, len, "(unsupported route type %d)", |
4810 | p->prefix.route_type); | |
d62a17ae | 4811 | } |
4812 | ||
4813 | return (buf); | |
520d5d76 | 4814 | } |
4815 | ||
128ea8ab | 4816 | /* |
4817 | * Encode EVPN prefix in Update (MP_REACH) | |
4818 | */ | |
d62a17ae | 4819 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4820 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4821 | uint32_t num_labels, struct attr *attr, |
4822 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4823 | { |
4824 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4825 | int len, ipa_len = 0; |
d62a17ae | 4826 | |
4827 | if (addpath_encode) | |
4828 | stream_putl(s, addpath_tx_id); | |
4829 | ||
4830 | /* Route type */ | |
4831 | stream_putc(s, evp->prefix.route_type); | |
4832 | ||
4833 | switch (evp->prefix.route_type) { | |
4834 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4835 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4836 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4837 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4838 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4839 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4840 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4841 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4842 | len += 3; | |
4843 | stream_putc(s, len); | |
996c9314 | 4844 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4845 | if (attr) |
4846 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4847 | else | |
4848 | stream_put(s, 0, 10); | |
3714a385 | 4849 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4850 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4851 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4852 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4853 | if (ipa_len) /* IP */ | |
4854 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4855 | ipa_len); | |
b57ba6d2 MK |
4856 | /* 1st label is the L2 VNI */ |
4857 | stream_put(s, label, BGP_LABEL_BYTES); | |
4858 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4859 | if (ipa_len && num_labels > 1) | |
996c9314 | 4860 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4861 | break; |
4862 | ||
4863 | case BGP_EVPN_IMET_ROUTE: | |
4864 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4865 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4866 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4867 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4868 | /* Originating Router's IP Addr */ | |
3714a385 | 4869 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4870 | break; |
4871 | ||
50f74cf1 | 4872 | case BGP_EVPN_ES_ROUTE: |
4873 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4874 | stream_put(s, prd->val, 8); /* RD */ | |
4875 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4876 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4877 | /* VTEP IP */ |
4878 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4879 | break; |
4880 | ||
d62a17ae | 4881 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4882 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4883 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4884 | break; |
4885 | ||
4886 | default: | |
4887 | break; | |
4888 | } | |
4889 | } | |
4890 | ||
4891 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4892 | struct bgp_nlri *packet, int withdraw) | |
4893 | { | |
d7c0a89a QY |
4894 | uint8_t *pnt; |
4895 | uint8_t *lim; | |
d62a17ae | 4896 | afi_t afi; |
4897 | safi_t safi; | |
d7c0a89a | 4898 | uint32_t addpath_id; |
d62a17ae | 4899 | int addpath_encoded; |
4900 | int psize = 0; | |
d7c0a89a | 4901 | uint8_t rtype; |
d62a17ae | 4902 | struct prefix p; |
4903 | ||
d62a17ae | 4904 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4905 | pnt = packet->nlri; | |
4906 | lim = pnt + packet->length; | |
4907 | afi = packet->afi; | |
4908 | safi = packet->safi; | |
4909 | addpath_id = 0; | |
4910 | ||
4911 | addpath_encoded = | |
4912 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4913 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4914 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4915 | ||
4916 | for (; pnt < lim; pnt += psize) { | |
4917 | /* Clear prefix structure. */ | |
4918 | memset(&p, 0, sizeof(struct prefix)); | |
4919 | ||
4920 | /* Deal with path-id if AddPath is supported. */ | |
4921 | if (addpath_encoded) { | |
4922 | /* When packet overflow occurs return immediately. */ | |
4923 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4924 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4925 | |
4926 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4927 | pnt += BGP_ADDPATH_ID_LEN; | |
4928 | } | |
4929 | ||
4930 | /* All EVPN NLRI types start with type and length. */ | |
4931 | if (pnt + 2 > lim) | |
513386b5 | 4932 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4933 | |
4934 | rtype = *pnt++; | |
3f54c705 | 4935 | psize = *pnt++; |
d62a17ae | 4936 | |
4937 | /* When packet overflow occur return immediately. */ | |
4938 | if (pnt + psize > lim) | |
513386b5 | 4939 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4940 | |
4941 | switch (rtype) { | |
4942 | case BGP_EVPN_MAC_IP_ROUTE: | |
4943 | if (process_type2_route(peer, afi, safi, | |
4944 | withdraw ? NULL : attr, pnt, | |
4945 | psize, addpath_id)) { | |
af4c2728 | 4946 | flog_err( |
e50f7cfd | 4947 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4948 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4949 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4950 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4951 | } |
4952 | break; | |
4953 | ||
4954 | case BGP_EVPN_IMET_ROUTE: | |
4955 | if (process_type3_route(peer, afi, safi, | |
4956 | withdraw ? NULL : attr, pnt, | |
4957 | psize, addpath_id)) { | |
af4c2728 | 4958 | flog_err( |
e50f7cfd | 4959 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4960 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4961 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4962 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4963 | } |
4964 | break; | |
4965 | ||
50f74cf1 | 4966 | case BGP_EVPN_ES_ROUTE: |
4967 | if (process_type4_route(peer, afi, safi, | |
4968 | withdraw ? NULL : attr, pnt, | |
4969 | psize, addpath_id)) { | |
af4c2728 | 4970 | flog_err( |
e50f7cfd | 4971 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4972 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4973 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4974 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4975 | } |
4976 | break; | |
4977 | ||
d62a17ae | 4978 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4979 | if (process_type5_route(peer, afi, safi, |
4980 | withdraw ? NULL : attr, pnt, | |
4981 | psize, addpath_id)) { | |
af4c2728 | 4982 | flog_err( |
e50f7cfd | 4983 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4984 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4985 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4986 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4987 | } |
4988 | break; | |
4989 | ||
4990 | default: | |
4991 | break; | |
4992 | } | |
4993 | } | |
4994 | ||
4995 | /* Packet length consistency check. */ | |
4996 | if (pnt != lim) | |
513386b5 | 4997 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 4998 | |
513386b5 | 4999 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5000 | } |
5001 | ||
10ebe1ab MK |
5002 | /* |
5003 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5004 | * The mapping will be used during route processing. | |
5005 | * bgp_def: default bgp instance | |
5006 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5007 | */ | |
5008 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5009 | { | |
5010 | int i = 0; | |
5011 | struct ecommunity_val *eval = NULL; | |
5012 | struct listnode *node = NULL, *nnode = NULL; | |
5013 | struct ecommunity *ecom = NULL; | |
5014 | ||
5015 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5016 | for (i = 0; i < ecom->size; i++) { | |
5017 | eval = (struct ecommunity_val *)(ecom->val | |
5018 | + (i | |
5019 | * ECOMMUNITY_SIZE)); | |
5020 | map_vrf_to_rt(bgp_vrf, eval); | |
5021 | } | |
5022 | } | |
5023 | } | |
5024 | ||
5025 | /* | |
5026 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5027 | */ | |
5028 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5029 | { | |
5030 | int i; | |
5031 | struct ecommunity_val *eval; | |
5032 | struct listnode *node, *nnode; | |
5033 | struct ecommunity *ecom; | |
5034 | ||
5035 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5036 | for (i = 0; i < ecom->size; i++) { | |
5037 | struct vrf_irt_node *irt; | |
5038 | struct ecommunity_val eval_tmp; | |
5039 | ||
5040 | eval = (struct ecommunity_val *)(ecom->val | |
5041 | + (i | |
5042 | * ECOMMUNITY_SIZE)); | |
5043 | /* If using "automatic" RT, we only care about the | |
5044 | * local-admin sub-field. | |
5045 | * This is to facilitate using VNI as the RT for EBGP | |
5046 | * peering too. | |
5047 | */ | |
5048 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5049 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5050 | BGP_VRF_IMPORT_RT_CFGD)) | |
5051 | mask_ecom_global_admin(&eval_tmp, eval); | |
5052 | ||
5053 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5054 | if (irt) | |
5055 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5056 | } | |
5057 | } | |
5058 | } | |
5059 | ||
5060 | ||
128ea8ab | 5061 | /* |
5062 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5063 | * The mapping will be used during route processing. | |
5064 | */ | |
d62a17ae | 5065 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5066 | { |
d62a17ae | 5067 | int i; |
5068 | struct ecommunity_val *eval; | |
5069 | struct listnode *node, *nnode; | |
5070 | struct ecommunity *ecom; | |
128ea8ab | 5071 | |
d62a17ae | 5072 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5073 | for (i = 0; i < ecom->size; i++) { | |
5074 | eval = (struct ecommunity_val *)(ecom->val | |
5075 | + (i | |
5076 | * ECOMMUNITY_SIZE)); | |
5077 | map_vni_to_rt(bgp, vpn, eval); | |
5078 | } | |
5079 | } | |
128ea8ab | 5080 | } |
5081 | ||
5082 | /* | |
5083 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5084 | */ | |
d62a17ae | 5085 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5086 | { |
d62a17ae | 5087 | int i; |
5088 | struct ecommunity_val *eval; | |
5089 | struct listnode *node, *nnode; | |
5090 | struct ecommunity *ecom; | |
128ea8ab | 5091 | |
d62a17ae | 5092 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5093 | for (i = 0; i < ecom->size; i++) { | |
5094 | struct irt_node *irt; | |
5095 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5096 | |
d62a17ae | 5097 | eval = (struct ecommunity_val *)(ecom->val |
5098 | + (i | |
5099 | * ECOMMUNITY_SIZE)); | |
5100 | /* If using "automatic" RT, we only care about the | |
5101 | * local-admin sub-field. | |
5102 | * This is to facilitate using VNI as the RT for EBGP | |
5103 | * peering too. | |
5104 | */ | |
5105 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5106 | if (!is_import_rt_configured(vpn)) | |
5107 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5108 | |
d62a17ae | 5109 | irt = lookup_import_rt(bgp, &eval_tmp); |
5110 | if (irt) | |
5111 | unmap_vni_from_rt(bgp, vpn, irt); | |
5112 | } | |
5113 | } | |
128ea8ab | 5114 | } |
5115 | ||
5116 | /* | |
5117 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5118 | * The mapping will be used during route processing. | |
5119 | */ | |
d62a17ae | 5120 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5121 | { |
c581d8b0 | 5122 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5123 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5124 | |
d62a17ae | 5125 | /* Map RT to VNI */ |
5126 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5127 | } |
5128 | ||
5129 | /* | |
5130 | * Derive Export RT automatically for VNI. | |
5131 | */ | |
d62a17ae | 5132 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5133 | { |
c581d8b0 | 5134 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5135 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5136 | } |
5137 | ||
676f83b9 | 5138 | /* |
5139 | * Derive RD automatically for VNI using passed information - it | |
5140 | * is of the form RouterId:unique-id-for-vni. | |
5141 | */ | |
5142 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5143 | { | |
9e97ff03 CS |
5144 | if (is_vrf_rd_configured(bgp)) |
5145 | return; | |
5146 | ||
92708db6 | 5147 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5148 | } |
5149 | ||
128ea8ab | 5150 | /* |
5151 | * Derive RD automatically for VNI using passed information - it | |
5152 | * is of the form RouterId:unique-id-for-vni. | |
5153 | */ | |
d62a17ae | 5154 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5155 | { |
d62a17ae | 5156 | char buf[100]; |
128ea8ab | 5157 | |
d62a17ae | 5158 | vpn->prd.family = AF_UNSPEC; |
5159 | vpn->prd.prefixlen = 64; | |
5160 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5161 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5162 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5163 | } |
5164 | ||
7df407ed CS |
5165 | /* |
5166 | * Lookup L3-VNI | |
5167 | */ | |
5168 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5169 | { | |
5170 | struct list *inst = bm->bgp; | |
5171 | struct listnode *node; | |
5172 | struct bgp *bgp_vrf; | |
5173 | ||
5174 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5175 | if (bgp_vrf->l3vni == vni) | |
5176 | return true; | |
5177 | } | |
5178 | ||
5179 | return false; | |
5180 | } | |
5181 | ||
128ea8ab | 5182 | /* |
5183 | * Lookup VNI. | |
5184 | */ | |
d62a17ae | 5185 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5186 | { |
d62a17ae | 5187 | struct bgpevpn *vpn; |
5188 | struct bgpevpn tmp; | |
128ea8ab | 5189 | |
d62a17ae | 5190 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5191 | tmp.vni = vni; | |
5192 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5193 | return vpn; | |
128ea8ab | 5194 | } |
5195 | ||
5196 | /* | |
5197 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5198 | */ | |
d62a17ae | 5199 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5200 | struct in_addr originator_ip, |
5201 | vrf_id_t tenant_vrf_id, | |
5202 | struct in_addr mcast_grp) | |
128ea8ab | 5203 | { |
d62a17ae | 5204 | struct bgpevpn *vpn; |
128ea8ab | 5205 | |
d62a17ae | 5206 | if (!bgp) |
5207 | return NULL; | |
128ea8ab | 5208 | |
d62a17ae | 5209 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5210 | |
d62a17ae | 5211 | /* Set values - RD and RT set to defaults. */ |
5212 | vpn->vni = vni; | |
5213 | vpn->originator_ip = originator_ip; | |
29c53922 | 5214 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5215 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5216 | |
d62a17ae | 5217 | /* Initialize route-target import and export lists */ |
5218 | vpn->import_rtl = list_new(); | |
5219 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5220 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5221 | vpn->export_rtl = list_new(); |
5222 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5223 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5224 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5225 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5226 | |
d62a17ae | 5227 | /* Initialize EVPN route table. */ |
960035b2 | 5228 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5229 | |
d62a17ae | 5230 | /* Add to hash */ |
5231 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5232 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5233 | return NULL; | |
5234 | } | |
6a8657d0 MK |
5235 | |
5236 | /* add to l2vni list on corresponding vrf */ | |
5237 | bgpevpn_link_to_l3vni(vpn); | |
5238 | ||
d62a17ae | 5239 | QOBJ_REG(vpn, bgpevpn); |
5240 | return vpn; | |
128ea8ab | 5241 | } |
5242 | ||
5243 | /* | |
5244 | * Free a given VPN - called in multiple scenarios such as zebra | |
5245 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5246 | * This just frees appropriate memory, caller should have taken other | |
5247 | * needed actions. | |
5248 | */ | |
d62a17ae | 5249 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5250 | { |
6a8657d0 | 5251 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5252 | bgp_table_unlock(vpn->route_table); |
5253 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5254 | list_delete(&vpn->import_rtl); |
5255 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5256 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5257 | hash_release(bgp->vnihash, vpn); |
5258 | QOBJ_UNREG(vpn); | |
5259 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5260 | } |
5261 | ||
5262 | /* | |
50f74cf1 | 5263 | * Lookup local ES. |
5264 | */ | |
5265 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5266 | { | |
5267 | struct evpnes *es; | |
5268 | struct evpnes tmp; | |
5269 | ||
5270 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5271 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5272 | es = hash_lookup(bgp->esihash, &tmp); | |
5273 | return es; | |
5274 | } | |
5275 | ||
5276 | /* | |
5277 | * Create a new local es - invoked upon zebra notification. | |
5278 | */ | |
5279 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5280 | esi_t *esi, | |
5281 | struct ipaddr *originator_ip) | |
5282 | { | |
5283 | char buf[100]; | |
5284 | struct evpnes *es; | |
5285 | ||
5286 | if (!bgp) | |
5287 | return NULL; | |
5288 | ||
5289 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5290 | |
5291 | /* set the ESI and originator_ip */ | |
5292 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5293 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5294 | ||
5295 | /* Initialise the VTEP list */ | |
5296 | es->vtep_list = list_new(); | |
ce167790 | 5297 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5298 | |
5299 | /* auto derive RD for this es */ | |
5300 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5301 | es->prd.family = AF_UNSPEC; | |
5302 | es->prd.prefixlen = 64; | |
5303 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5304 | (void)str2prefix_rd(buf, &es->prd); | |
5305 | ||
5306 | /* Initialize the ES route table */ | |
5307 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5308 | ||
5309 | /* Add to hash */ | |
5310 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5311 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5312 | return NULL; | |
5313 | } | |
5314 | ||
5315 | QOBJ_REG(es, evpnes); | |
5316 | return es; | |
5317 | } | |
5318 | ||
5319 | /* | |
5320 | * Free a given ES - | |
5321 | * This just frees appropriate memory, caller should have taken other | |
5322 | * needed actions. | |
5323 | */ | |
5324 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5325 | { | |
6a154c88 | 5326 | list_delete(&es->vtep_list); |
50f74cf1 | 5327 | bgp_table_unlock(es->route_table); |
5328 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5329 | hash_release(bgp->esihash, es); | |
5330 | QOBJ_UNREG(es); | |
5331 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5332 | } | |
5333 | ||
5334 | /* | |
5335 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5336 | */ |
d62a17ae | 5337 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5338 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5339 | { |
40381db7 | 5340 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5341 | } |
5342 | ||
5343 | /* | |
50f74cf1 | 5344 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5345 | */ |
d62a17ae | 5346 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5347 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5348 | { |
40381db7 | 5349 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5350 | } |
5351 | ||
db0e1937 MK |
5352 | /* filter routes which have martian next hops */ |
5353 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5354 | { | |
0291c246 MK |
5355 | afi_t afi; |
5356 | safi_t safi; | |
5357 | struct bgp_node *rd_rn, *rn; | |
5358 | struct bgp_table *table; | |
40381db7 | 5359 | struct bgp_path_info *pi; |
db0e1937 MK |
5360 | |
5361 | afi = AFI_L2VPN; | |
5362 | safi = SAFI_EVPN; | |
5363 | ||
5364 | /* Walk entire global routing table and evaluate routes which could be | |
5365 | * imported into this VPN. Note that we cannot just look at the routes | |
5366 | * for the VNI's RD - | |
5367 | * remote routes applicable for this VNI could have any RD. | |
5368 | */ | |
5369 | /* EVPN routes are a 2-level table. */ | |
5370 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5371 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5372 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5373 | if (!table) |
5374 | continue; | |
5375 | ||
5376 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5377 | ||
6f94b685 DS |
5378 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5379 | pi = pi->next) { | |
db0e1937 MK |
5380 | |
5381 | /* Consider "valid" remote routes applicable for | |
5382 | * this VNI. */ | |
40381db7 DS |
5383 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5384 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 MK |
5385 | continue; |
5386 | ||
40381db7 | 5387 | if (bgp_nexthop_self(bgp, pi->attr->nexthop)) { |
db0e1937 | 5388 | |
8ba71050 | 5389 | char attr_str[BUFSIZ] = {0}; |
db0e1937 MK |
5390 | char pbuf[PREFIX_STRLEN]; |
5391 | ||
40381db7 | 5392 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5393 | BUFSIZ); |
5394 | ||
40381db7 | 5395 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5396 | NULL, 1)) |
5397 | zlog_debug( | |
b682f6de | 5398 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5399 | bgp->vrf_id, |
5400 | prefix2str( | |
60466a63 | 5401 | &rn->p, pbuf, |
db0e1937 MK |
5402 | sizeof(pbuf)), |
5403 | attr_str); | |
5404 | ||
5405 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5406 | &rn->p, pi); |
db0e1937 | 5407 | |
40381db7 | 5408 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5409 | safi); |
db0e1937 | 5410 | } |
db0e1937 MK |
5411 | } |
5412 | } | |
5413 | } | |
5414 | ||
5415 | return 0; | |
5416 | } | |
5417 | ||
128ea8ab | 5418 | /* |
5419 | * Handle del of a local MACIP. | |
5420 | */ | |
d62a17ae | 5421 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5422 | struct ipaddr *ip, int state) |
128ea8ab | 5423 | { |
d62a17ae | 5424 | struct bgpevpn *vpn; |
5425 | struct prefix_evpn p; | |
ec0ab544 | 5426 | struct bgp_node *rn; |
128ea8ab | 5427 | |
d62a17ae | 5428 | /* Lookup VNI hash - should exist. */ |
5429 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5430 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5431 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5432 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5433 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5434 | return -1; | |
5435 | } | |
128ea8ab | 5436 | |
d62a17ae | 5437 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5438 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5439 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5440 | delete_evpn_route(bgp, vpn, &p); | |
5441 | } else { | |
5442 | /* Re-instate the current remote best path if any */ | |
5443 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5444 | if (rn) | |
5445 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5446 | } | |
128ea8ab | 5447 | |
d62a17ae | 5448 | return 0; |
128ea8ab | 5449 | } |
5450 | ||
5451 | /* | |
5452 | * Handle add of a local MACIP. | |
5453 | */ | |
d62a17ae | 5454 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5455 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5456 | { |
d62a17ae | 5457 | struct bgpevpn *vpn; |
5458 | struct prefix_evpn p; | |
128ea8ab | 5459 | |
d62a17ae | 5460 | /* Lookup VNI hash - should exist. */ |
5461 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5462 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5463 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5464 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5465 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5466 | return -1; | |
5467 | } | |
128ea8ab | 5468 | |
d62a17ae | 5469 | /* Create EVPN type-2 route and schedule for processing. */ |
5470 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5471 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5472 | char buf[ETHER_ADDR_STRLEN]; |
5473 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5474 | |
af4c2728 | 5475 | flog_err( |
e50f7cfd | 5476 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5477 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5478 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5479 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5480 | ? "sticky gateway" | |
5481 | : "", | |
d62a17ae | 5482 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5483 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5484 | return -1; |
5485 | } | |
128ea8ab | 5486 | |
d62a17ae | 5487 | return 0; |
128ea8ab | 5488 | } |
5489 | ||
e3b78da8 | 5490 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5491 | struct bgp *bgp_vrf) |
5492 | { | |
e3b78da8 | 5493 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5494 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5495 | |
5e53dce3 T |
5496 | bgp_evpn = bgp_get_evpn(); |
5497 | assert(bgp_evpn); | |
6a8657d0 | 5498 | |
6a8657d0 MK |
5499 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5500 | bgpevpn_link_to_l3vni(vpn); | |
5501 | } | |
5502 | ||
996c9314 | 5503 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
0483af6e | 5504 | struct in_addr originator_ip, int filter, |
5505 | ifindex_t svi_ifindex) | |
fe1dc5a3 MK |
5506 | { |
5507 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5508 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5509 | struct listnode *node = NULL; |
5510 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5511 | as_t as = 0; |
5512 | ||
3621ebc5 | 5513 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5514 | * auto-creatio |
5515 | */ | |
5e53dce3 T |
5516 | bgp_evpn = bgp_get_evpn(); |
5517 | if (!bgp_evpn) { | |
af4c2728 | 5518 | flog_err( |
e50f7cfd | 5519 | EC_BGP_NO_DFLT, |
3621ebc5 | 5520 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5521 | l3vni); |
fe1dc5a3 MK |
5522 | return -1; |
5523 | } | |
5e53dce3 | 5524 | as = bgp_evpn->as; |
fe1dc5a3 | 5525 | |
0437e105 | 5526 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5527 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5528 | if (!bgp_vrf) { |
5529 | ||
5530 | int ret = 0; | |
5531 | ||
5532 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
3621ebc5 T |
5533 | vrf_id == VRF_DEFAULT ? BGP_INSTANCE_TYPE_DEFAULT |
5534 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 MK |
5535 | switch (ret) { |
5536 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
e50f7cfd | 5537 | flog_err(EC_BGP_MULTI_INSTANCE, |
1c50c1c0 | 5538 | "'bgp multiple-instance' not present\n"); |
fe1dc5a3 MK |
5539 | return -1; |
5540 | case BGP_ERR_AS_MISMATCH: | |
e50f7cfd | 5541 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5542 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5543 | return -1; |
5544 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5545 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5546 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5547 | return -1; |
5548 | } | |
5549 | ||
5550 | /* mark as auto created */ | |
5551 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5552 | } | |
5553 | ||
0483af6e | 5554 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5555 | bgp_vrf->l3vni = l3vni; |
fe1dc5a3 | 5556 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); |
b67a60d2 | 5557 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5558 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
b67a60d2 | 5559 | |
c48d9f5f MK |
5560 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5561 | if (filter) | |
5562 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5563 | ||
530e8a6e | 5564 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5565 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5566 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5567 | else |
5568 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5569 | ||
c581d8b0 MK |
5570 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5571 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5572 | |
5573 | /* auto derive RD */ | |
676f83b9 | 5574 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5575 | |
6a8657d0 | 5576 | /* link all corresponding l2vnis */ |
5e53dce3 | 5577 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5578 | (void (*)(struct hash_bucket *, |
996c9314 | 5579 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5580 | bgp_vrf); |
5581 | ||
c48d9f5f MK |
5582 | /* Only update all corresponding type-2 routes if we are advertising two |
5583 | * labels along with type-2 routes | |
5584 | */ | |
5585 | if (!filter) | |
5586 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5587 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5588 | |
06d2e8f3 MK |
5589 | /* advertise type-5 routes if needed */ |
5590 | update_advertise_vrf_routes(bgp_vrf); | |
5591 | ||
5ba238b7 MK |
5592 | /* install all remote routes belonging to this l3vni into correspondng |
5593 | * vrf */ | |
5594 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5595 | |
5596 | return 0; | |
5597 | } | |
5598 | ||
996c9314 | 5599 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5600 | { |
5601 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5602 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5603 | struct listnode *node = NULL; |
18abc1eb | 5604 | struct listnode *next = NULL; |
f1f8b53c | 5605 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5606 | |
5607 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5608 | if (!bgp_vrf) { | |
af4c2728 | 5609 | flog_err( |
e50f7cfd | 5610 | EC_BGP_NO_DFLT, |
996c9314 LB |
5611 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5612 | l3vni); | |
fe1dc5a3 MK |
5613 | return -1; |
5614 | } | |
5615 | ||
5e53dce3 T |
5616 | bgp_evpn = bgp_get_evpn(); |
5617 | if (!bgp_evpn) { | |
af4c2728 | 5618 | flog_err( |
e50f7cfd | 5619 | EC_BGP_NO_DFLT, |
3621ebc5 | 5620 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5621 | l3vni); |
f1f8b53c MK |
5622 | return -1; |
5623 | } | |
5624 | ||
d846168d | 5625 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5626 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5627 | * routes. This will uninstalling the routes from zebra and decremnt the |
5628 | * bgp info count. | |
523cafc4 | 5629 | */ |
d846168d | 5630 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5631 | |
06d2e8f3 MK |
5632 | /* delete/withdraw all type-5 routes */ |
5633 | delete_withdraw_vrf_routes(bgp_vrf); | |
5634 | ||
fe1dc5a3 MK |
5635 | /* remove the l3vni from vrf instance */ |
5636 | bgp_vrf->l3vni = 0; | |
5637 | ||
5638 | /* remove the Rmac from the BGP vrf */ | |
5639 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5640 | ||
530e8a6e | 5641 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5642 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5643 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5644 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5645 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5646 | } |
530e8a6e CS |
5647 | |
5648 | /* remove default export RT */ | |
5649 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5650 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5651 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5652 | } |
fe1dc5a3 | 5653 | |
f1f8b53c | 5654 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5655 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5656 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5657 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5658 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5659 | } |
5660 | } | |
fe1dc5a3 | 5661 | |
18abc1eb | 5662 | /* If any L2VNIs point to this instance, unlink them. */ |
5663 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5664 | bgpevpn_unlink_from_l3vni(vpn); | |
5665 | ||
fe1dc5a3 MK |
5666 | /* Delete the instance if it was autocreated */ |
5667 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5668 | bgp_delete(bgp_vrf); | |
5669 | ||
5670 | return 0; | |
5671 | } | |
5672 | ||
128ea8ab | 5673 | /* |
5674 | * Handle del of a local VNI. | |
5675 | */ | |
d62a17ae | 5676 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5677 | { |
d62a17ae | 5678 | struct bgpevpn *vpn; |
128ea8ab | 5679 | |
d62a17ae | 5680 | /* Locate VNI hash */ |
5681 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5682 | if (!vpn) { | |
1e00627b | 5683 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5684 | flog_warn( |
e50f7cfd | 5685 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5686 | "%u: VNI hash entry for VNI %u not found at DEL", |
5687 | bgp->vrf_id, vni); | |
d62a17ae | 5688 | return 0; |
5689 | } | |
128ea8ab | 5690 | |
d62a17ae | 5691 | /* Remove all local EVPN routes and schedule for processing (to |
5692 | * withdraw from peers). | |
5693 | */ | |
5694 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5695 | |
db0e1937 MK |
5696 | /* |
5697 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5698 | */ | |
5699 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5700 | ||
d62a17ae | 5701 | /* Clear "live" flag and see if hash needs to be freed. */ |
5702 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5703 | if (!is_vni_configured(vpn)) | |
5704 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5705 | |
d62a17ae | 5706 | return 0; |
128ea8ab | 5707 | } |
5708 | ||
5709 | /* | |
d1911c26 | 5710 | * Handle add (or update) of a local VNI. The VNI changes we care |
5711 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5712 | */ |
d62a17ae | 5713 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5714 | struct in_addr originator_ip, |
5715 | vrf_id_t tenant_vrf_id, | |
5716 | struct in_addr mcast_grp) | |
5717 | ||
d62a17ae | 5718 | { |
5719 | struct bgpevpn *vpn; | |
5720 | struct prefix_evpn p; | |
5721 | ||
d62a17ae | 5722 | /* Lookup VNI. If present and no change, exit. */ |
5723 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5724 | if (vpn) { |
29c53922 | 5725 | |
d1911c26 | 5726 | if (is_vni_live(vpn) |
5727 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5728 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5729 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5730 | /* Probably some other param has changed that we don't | |
5731 | * care about. */ | |
5732 | return 0; | |
5733 | ||
76d07c7a AK |
5734 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5735 | ||
d1911c26 | 5736 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5737 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5738 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5739 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5740 | bgpevpn_link_to_l3vni(vpn); |
5741 | } | |
29c53922 | 5742 | |
d1911c26 | 5743 | /* If tunnel endpoint IP has changed, update (and delete prior |
5744 | * type-3 route, if needed.) | |
5745 | */ | |
5746 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5747 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5748 | |
d1911c26 | 5749 | /* Update all routes with new endpoint IP and/or export RT |
5750 | * for VRFs | |
5751 | */ | |
5752 | if (is_vni_live(vpn)) | |
5753 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5754 | } |
5755 | ||
5756 | /* Create or update as appropriate. */ | |
5757 | if (!vpn) { | |
76d07c7a AK |
5758 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5759 | mcast_grp); | |
d62a17ae | 5760 | if (!vpn) { |
af4c2728 | 5761 | flog_err( |
e50f7cfd | 5762 | EC_BGP_VNI, |
d62a17ae | 5763 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5764 | bgp->vrf_id, vni); | |
5765 | return -1; | |
5766 | } | |
5767 | } | |
5768 | ||
db0e1937 | 5769 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5770 | if (is_vni_live(vpn)) |
5771 | return 0; | |
5772 | ||
d62a17ae | 5773 | /* Mark as "live" */ |
5774 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5775 | ||
db0e1937 MK |
5776 | /* tunnel is now active, add tunnel-ip to db */ |
5777 | bgp_tip_add(bgp, &originator_ip); | |
5778 | ||
5779 | /* filter routes as nexthop database has changed */ | |
5780 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5781 | ||
fd069644 DS |
5782 | /* |
5783 | * Create EVPN type-3 route and schedule for processing. | |
5784 | * | |
5785 | * RT-3 only if doing head-end replication | |
5786 | */ | |
833b8a50 AK |
5787 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5788 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
5789 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
5790 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
5791 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
5792 | "%u: Type3 route creation failure for VNI %u", | |
5793 | bgp->vrf_id, vni); | |
5794 | return -1; | |
5795 | } | |
d62a17ae | 5796 | } |
5797 | ||
5798 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5799 | * VNI, | |
5800 | * install them. | |
5801 | */ | |
5802 | install_routes_for_vni(bgp, vpn); | |
5803 | ||
d7d97010 MK |
5804 | /* If we are advertising gateway mac-ip |
5805 | It needs to be conveyed again to zebra */ | |
5806 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5807 | ||
d62a17ae | 5808 | return 0; |
b18825eb | 5809 | } |
14c1a7bf | 5810 | |
50f74cf1 | 5811 | /* |
5812 | * bgp_evpn_local_es_del | |
5813 | */ | |
5814 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5815 | esi_t *esi, | |
5816 | struct ipaddr *originator_ip) | |
5817 | { | |
5818 | char buf[ESI_STR_LEN]; | |
5819 | struct evpnes *es = NULL; | |
5820 | ||
5821 | if (!bgp->esihash) { | |
e50f7cfd | 5822 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5823 | bgp->vrf_id); |
50f74cf1 | 5824 | return -1; |
5825 | } | |
5826 | ||
5827 | /* Lookup ESI hash - should exist. */ | |
5828 | es = bgp_evpn_lookup_es(bgp, esi); | |
5829 | if (!es) { | |
e50f7cfd | 5830 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
5831 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
5832 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5833 | return -1; |
5834 | } | |
5835 | ||
5836 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5837 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5838 | */ |
5839 | delete_routes_for_es(bgp, es); | |
5840 | ||
5841 | /* free the hash entry */ | |
5842 | bgp_evpn_es_free(bgp, es); | |
5843 | ||
5844 | return 0; | |
5845 | } | |
5846 | ||
5847 | /* | |
5848 | * bgp_evpn_local_es_add | |
5849 | */ | |
5850 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5851 | esi_t *esi, | |
5852 | struct ipaddr *originator_ip) | |
5853 | { | |
5854 | char buf[ESI_STR_LEN]; | |
5855 | struct evpnes *es = NULL; | |
5856 | struct prefix_evpn p; | |
5857 | ||
5858 | if (!bgp->esihash) { | |
e50f7cfd | 5859 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5860 | bgp->vrf_id); |
50f74cf1 | 5861 | return -1; |
5862 | } | |
5863 | ||
5864 | /* create the new es */ | |
2bb9eff4 | 5865 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5866 | if (!es) { |
5867 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5868 | if (!es) { | |
af4c2728 | 5869 | flog_err( |
e50f7cfd | 5870 | EC_BGP_ES_CREATE, |
50f74cf1 | 5871 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5872 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5873 | return -1; | |
5874 | } | |
5875 | } | |
5876 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5877 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5878 | ||
5879 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5880 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 5881 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5882 | "%u: Type4 route creation failure for ESI %s", |
5883 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5884 | return -1; |
5885 | } | |
5886 | ||
5887 | /* import all remote ES routes in th ES table */ | |
5888 | install_routes_for_es(bgp, es); | |
5889 | ||
5890 | return 0; | |
5891 | } | |
5892 | ||
fd069644 DS |
5893 | /* |
5894 | * Handle change in setting for BUM handling. The supported values | |
5895 | * are head-end replication and dropping all BUM packets. Any change | |
5896 | * should be registered with zebra. Also, if doing head-end replication, | |
5897 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5898 | * to be dropped, the RT-3s must be withdrawn. | |
5899 | */ | |
5900 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5901 | { | |
5902 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5903 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5904 | "Flooding" : "Flooding Disabled"); | |
5905 | ||
5906 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5907 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5908 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5909 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5910 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5911 | } | |
5912 | ||
7724c0a1 | 5913 | /* |
5914 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5915 | * EVPN routes from peers. | |
5916 | */ | |
d62a17ae | 5917 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5918 | { |
e3b78da8 | 5919 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5920 | void *))cleanup_vni_on_disable, |
5921 | bgp); | |
7724c0a1 | 5922 | } |
5923 | ||
14c1a7bf | 5924 | /* |
5925 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5926 | * BGP instance (default) is being freed. | |
5927 | */ | |
d62a17ae | 5928 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5929 | { |
1525e99f | 5930 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5931 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5932 | bgp); |
5933 | ||
5934 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5935 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5936 | |
5937 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5938 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5939 | |
5940 | hash_free(bgp->vnihash); | |
d62a17ae | 5941 | bgp->vnihash = NULL; |
50f74cf1 | 5942 | if (bgp->esihash) |
5943 | hash_free(bgp->esihash); | |
5944 | bgp->esihash = NULL; | |
1525e99f | 5945 | |
6a154c88 DL |
5946 | list_delete(&bgp->vrf_import_rtl); |
5947 | list_delete(&bgp->vrf_export_rtl); | |
5948 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5949 | } |
5950 | ||
5951 | /* | |
5952 | * Initialization for EVPN | |
5953 | * Create | |
5954 | * VNI hash table | |
5955 | * hash for RT to VNI | |
14c1a7bf | 5956 | */ |
d62a17ae | 5957 | void bgp_evpn_init(struct bgp *bgp) |
5958 | { | |
5959 | bgp->vnihash = | |
5960 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5961 | bgp->esihash = |
5962 | hash_create(esi_hash_keymake, esi_cmp, | |
5963 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5964 | bgp->import_rt_hash = |
5965 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5966 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5967 | bgp->vrf_import_rt_hash = |
5968 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5969 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5970 | bgp->vrf_import_rtl = list_new(); |
5971 | bgp->vrf_import_rtl->cmp = | |
5972 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5973 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5974 | bgp->vrf_export_rtl = list_new(); |
5975 | bgp->vrf_export_rtl->cmp = | |
5976 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5977 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5978 | bgp->l2vnis = list_new(); |
64465785 | 5979 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5980 | /* By default Duplicate Address Dection is enabled. |
5981 | * Max-moves (N) 5, detection time (M) 180 | |
5982 | * default action is warning-only | |
5983 | * freeze action permanently freezes address, | |
5984 | * and freeze time (auto-recovery) is disabled. | |
5985 | */ | |
5986 | if (bgp->evpn_info) { | |
5987 | bgp->evpn_info->dup_addr_detect = true; | |
5988 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5989 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5990 | bgp->evpn_info->dad_freeze = false; | |
5991 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5992 | /* Initialize zebra vxlan */ |
5993 | bgp_zebra_dup_addr_detection(bgp); | |
85c8d83b | 5994 | } |
fd069644 DS |
5995 | |
5996 | /* Default BUM handling is to do head-end replication. */ | |
5997 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5998 | } |
10ebe1ab MK |
5999 | |
6000 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6001 | { | |
6002 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
6003 | } |