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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 | */ | |
d8b87afe | 86 | static unsigned int esi_hash_keymake(const void *p) |
50f74cf1 | 87 | { |
d8b87afe | 88 | const struct evpnes *pes = p; |
50f74cf1 | 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 | */ | |
d8b87afe | 114 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 115 | { |
d8b87afe | 116 | const struct bgpevpn *vpn = p; |
d62a17ae | 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 | */ | |
d8b87afe | 146 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 147 | { |
d8b87afe QY |
148 | const struct vrf_irt_node *irt = p; |
149 | const 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 | */ | |
d8b87afe | 262 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 263 | { |
d8b87afe QY |
264 | const struct irt_node *irt = p; |
265 | const 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; |
b90d4580 CS |
508 | struct ecommunity *ecomadd, *ecom; |
509 | bool ecom_found = false; | |
510 | struct listnode *node; | |
128ea8ab | 511 | |
bf1061d8 VB |
512 | if (bgp->advertise_autort_rfc8365) |
513 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 514 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 515 | |
d62a17ae | 516 | ecomadd = ecommunity_new(); |
517 | ecommunity_add_val(ecomadd, &eval); | |
b90d4580 CS |
518 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
519 | if (ecommunity_cmp(ecomadd, ecom)) | |
520 | ecom_found = true; | |
521 | ||
522 | if (!ecom_found) | |
523 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 524 | } |
14c1a7bf | 525 | |
526 | /* | |
128ea8ab | 527 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
528 | * creation of a VNI. | |
529 | */ | |
d62a17ae | 530 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 531 | { |
d62a17ae | 532 | bgp_evpn_derive_auto_rd(bgp, vpn); |
533 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
534 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 535 | } |
536 | ||
1ec31309 | 537 | /* |
538 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
539 | */ | |
540 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
541 | { | |
542 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
543 | return; | |
544 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
545 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
546 | } | |
547 | ||
128ea8ab | 548 | /* |
549 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 550 | */ |
d62a17ae | 551 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
552 | struct prefix_evpn *p, | |
553 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 554 | uint8_t flags, uint32_t seq) |
d62a17ae | 555 | { |
556 | struct stream *s; | |
557 | int ipa_len; | |
558 | char buf1[ETHER_ADDR_STRLEN]; | |
559 | char buf2[INET6_ADDRSTRLEN]; | |
560 | char buf3[INET6_ADDRSTRLEN]; | |
561 | ||
562 | /* Check socket. */ | |
563 | if (!zclient || zclient->sock < 0) | |
564 | return 0; | |
565 | ||
566 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
567 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
568 | if (BGP_DEBUG(zebra, ZEBRA)) | |
569 | zlog_debug("%s: No zebra instance to talk to, not installing remote macip", | |
570 | __PRETTY_FUNCTION__); | |
d62a17ae | 571 | return 0; |
bb4ef1ae | 572 | } |
d62a17ae | 573 | s = zclient->obuf; |
574 | stream_reset(s); | |
575 | ||
996c9314 LB |
576 | zclient_create_header( |
577 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
578 | bgp->vrf_id); | |
d62a17ae | 579 | stream_putl(s, vpn->vni); |
3714a385 | 580 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 581 | /* IP address length and IP address, if any. */ |
3714a385 | 582 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 583 | stream_putl(s, 0); |
584 | else { | |
3714a385 | 585 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 586 | : IPV6_MAX_BYTELEN; |
587 | stream_putl(s, ipa_len); | |
3714a385 | 588 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 589 | } |
590 | stream_put_in_addr(s, &remote_vtep_ip); | |
591 | ||
ead40654 | 592 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 593 | /* Also TX the sequence number of the best route. */ |
594 | if (add) { | |
ead40654 | 595 | stream_putc(s, flags); |
f07e1c99 | 596 | stream_putl(s, seq); |
597 | } | |
d62a17ae | 598 | |
599 | stream_putw_at(s, 0, stream_get_endp(s)); | |
600 | ||
601 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 602 | zlog_debug( |
f07e1c99 | 603 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 604 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 605 | prefix_mac2str(&p->prefix.macip_addr.mac, |
606 | buf1, sizeof(buf1)), | |
607 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 608 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
609 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
610 | sizeof(buf2))); | |
d62a17ae | 611 | |
612 | return zclient_send_message(zclient); | |
7ef5a232 | 613 | } |
b18825eb | 614 | |
128ea8ab | 615 | /* |
616 | * Add (update) or delete remote VTEP from zebra. | |
617 | */ | |
d62a17ae | 618 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
b16dd019 AK |
619 | struct prefix_evpn *p, |
620 | int flood_control, int add) | |
128ea8ab | 621 | { |
d62a17ae | 622 | struct stream *s; |
128ea8ab | 623 | |
d62a17ae | 624 | /* Check socket. */ |
625 | if (!zclient || zclient->sock < 0) | |
626 | return 0; | |
128ea8ab | 627 | |
d62a17ae | 628 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
629 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
630 | if (BGP_DEBUG(zebra, ZEBRA)) | |
631 | zlog_debug("%s: No zebra instance to talk to, not installing remote vtep", | |
632 | __PRETTY_FUNCTION__); | |
d62a17ae | 633 | return 0; |
bb4ef1ae | 634 | } |
128ea8ab | 635 | |
d62a17ae | 636 | s = zclient->obuf; |
637 | stream_reset(s); | |
128ea8ab | 638 | |
996c9314 LB |
639 | zclient_create_header( |
640 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
641 | bgp->vrf_id); | |
d62a17ae | 642 | stream_putl(s, vpn->vni); |
3714a385 | 643 | if (is_evpn_prefix_ipaddr_v4(p)) |
644 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
645 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 646 | flog_err( |
e50f7cfd | 647 | EC_BGP_VTEP_INVALID, |
d62a17ae | 648 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
649 | add ? "ADD" : "DEL", vpn->vni); | |
650 | return -1; | |
651 | } | |
b16dd019 | 652 | stream_putl(s, flood_control); |
128ea8ab | 653 | |
d62a17ae | 654 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 655 | |
d62a17ae | 656 | if (bgp_debug_zebra(NULL)) |
657 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
658 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 659 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 660 | |
d62a17ae | 661 | return zclient_send_message(zclient); |
128ea8ab | 662 | } |
663 | ||
50f74cf1 | 664 | /* |
665 | * Build extended community for EVPN ES (type-4) route | |
666 | */ | |
667 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
668 | struct attr *attr) | |
669 | { | |
670 | struct ecommunity ecom_encap; | |
671 | struct ecommunity ecom_es_rt; | |
672 | struct ecommunity_val eval; | |
673 | struct ecommunity_val eval_es_rt; | |
674 | bgp_encap_types tnl_type; | |
675 | struct ethaddr mac; | |
676 | ||
677 | /* Encap */ | |
678 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
679 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
680 | encode_encap_extcomm(tnl_type, &eval); | |
681 | ecom_encap.size = 1; | |
682 | ecom_encap.val = (uint8_t *)eval.val; | |
683 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
684 | ||
685 | /* ES import RT */ | |
686 | memset(&mac, 0, sizeof(struct ethaddr)); | |
687 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
688 | es_get_system_mac(&es->esi, &mac); | |
689 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
690 | ecom_es_rt.size = 1; | |
691 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
692 | attr->ecommunity = | |
693 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
694 | ||
695 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
696 | } | |
697 | ||
342dd0c6 | 698 | /* |
699 | * Build extended communities for EVPN prefix route. | |
700 | */ | |
701 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
702 | struct attr *attr) | |
703 | { | |
704 | struct ecommunity ecom_encap; | |
705 | struct ecommunity ecom_rmac; | |
706 | struct ecommunity_val eval; | |
707 | struct ecommunity_val eval_rmac; | |
708 | bgp_encap_types tnl_type; | |
709 | struct listnode *node, *nnode; | |
710 | struct ecommunity *ecom; | |
711 | struct list *vrf_export_rtl = NULL; | |
712 | ||
713 | /* Encap */ | |
714 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
715 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
716 | encode_encap_extcomm(tnl_type, &eval); | |
717 | ecom_encap.size = 1; | |
d7c0a89a | 718 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 719 | |
720 | /* Add Encap */ | |
721 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
722 | ||
723 | /* Add the export RTs for L3VNI/VRF */ | |
724 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
725 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
726 | attr->ecommunity = | |
727 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 728 | |
729 | /* add the router mac extended community */ | |
730 | if (!is_zero_mac(&attr->rmac)) { | |
731 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
732 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
733 | ecom_rmac.size = 1; | |
734 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
735 | attr->ecommunity = |
736 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 737 | } |
738 | ||
739 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
740 | } | |
741 | ||
128ea8ab | 742 | /* |
1ec31309 | 743 | * Build extended communities for EVPN route. |
744 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
745 | * and ENCAP extended communities are applicable for all routes. | |
746 | * The default gateway extended community and MAC mobility (sticky) extended | |
747 | * community are added as needed based on passed settings - only for type-2 | |
748 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
749 | * added, if present, based on passed settings - only for non-link-local | |
750 | * type-2 routes. | |
128ea8ab | 751 | */ |
7ec156a9 | 752 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 753 | int add_l3_ecomm) |
128ea8ab | 754 | { |
d62a17ae | 755 | struct ecommunity ecom_encap; |
756 | struct ecommunity ecom_sticky; | |
ead40654 | 757 | struct ecommunity ecom_default_gw; |
bc59a672 | 758 | struct ecommunity ecom_rmac; |
68e33151 | 759 | struct ecommunity ecom_na; |
d62a17ae | 760 | struct ecommunity_val eval; |
761 | struct ecommunity_val eval_sticky; | |
ead40654 | 762 | struct ecommunity_val eval_default_gw; |
bc59a672 | 763 | struct ecommunity_val eval_rmac; |
68e33151 CS |
764 | struct ecommunity_val eval_na; |
765 | ||
d62a17ae | 766 | bgp_encap_types tnl_type; |
767 | struct listnode *node, *nnode; | |
768 | struct ecommunity *ecom; | |
d7c0a89a | 769 | uint32_t seqnum; |
7a3e76f1 | 770 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 771 | |
d62a17ae | 772 | /* Encap */ |
773 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
774 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
775 | encode_encap_extcomm(tnl_type, &eval); | |
776 | ecom_encap.size = 1; | |
d7c0a89a | 777 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 778 | |
d62a17ae | 779 | /* Add Encap */ |
780 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 781 | |
7a3e76f1 | 782 | /* Add the export RTs for L2VNI */ |
d62a17ae | 783 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
784 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 785 | |
1ec31309 | 786 | /* Add the export RTs for L3VNI if told to - caller determines |
787 | * when this should be done. | |
523cafc4 | 788 | */ |
1ec31309 | 789 | if (add_l3_ecomm) { |
7ec156a9 MK |
790 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
791 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
792 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
793 | ecom)) | |
996c9314 LB |
794 | attr->ecommunity = ecommunity_merge( |
795 | attr->ecommunity, ecom); | |
7ec156a9 | 796 | } |
f1f8b53c | 797 | } |
7a3e76f1 | 798 | |
1ec31309 | 799 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 800 | if (attr->sticky) { |
801 | seqnum = 0; | |
802 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
803 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
804 | ecom_sticky.size = 1; | |
d7c0a89a | 805 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 806 | attr->ecommunity = |
807 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
808 | } | |
c85c03c7 | 809 | |
1ec31309 | 810 | /* Add RMAC, if told to. */ |
811 | if (add_l3_ecomm) { | |
bc59a672 MK |
812 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
813 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
814 | ecom_rmac.size = 1; | |
815 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
816 | attr->ecommunity = |
817 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
818 | } |
819 | ||
1ec31309 | 820 | /* Add default gateway, if needed. */ |
ead40654 MK |
821 | if (attr->default_gw) { |
822 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
823 | encode_default_gw_extcomm(&eval_default_gw); | |
824 | ecom_default_gw.size = 1; | |
825 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
826 | attr->ecommunity = |
827 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
828 | } |
829 | ||
68e33151 CS |
830 | if (attr->router_flag) { |
831 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
832 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
833 | ecom_na.size = 1; | |
834 | ecom_na.val = (uint8_t *)eval_na.val; | |
835 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
836 | &ecom_na); | |
837 | } | |
838 | ||
d62a17ae | 839 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 840 | } |
841 | ||
842 | /* | |
843 | * Add MAC mobility extended community to attribute. | |
844 | */ | |
d7c0a89a | 845 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 846 | { |
847 | struct ecommunity ecom_tmp; | |
848 | struct ecommunity_val eval; | |
d7c0a89a | 849 | uint8_t *ecom_val_ptr; |
d62a17ae | 850 | int i; |
d7c0a89a | 851 | uint8_t *pnt; |
d62a17ae | 852 | int type = 0; |
853 | int sub_type = 0; | |
854 | ||
855 | /* Build MM */ | |
856 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
857 | ||
858 | /* Find current MM ecommunity */ | |
421bb26a | 859 | ecom_val_ptr = NULL; |
d62a17ae | 860 | |
861 | if (attr->ecommunity) { | |
862 | for (i = 0; i < attr->ecommunity->size; i++) { | |
863 | pnt = attr->ecommunity->val + (i * 8); | |
864 | type = *pnt++; | |
865 | sub_type = *pnt++; | |
866 | ||
867 | if (type == ECOMMUNITY_ENCODE_EVPN | |
868 | && sub_type | |
869 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
870 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
871 | + (i * 8)); | |
d62a17ae | 872 | break; |
873 | } | |
874 | } | |
875 | } | |
876 | ||
877 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
878 | if (ecom_val_ptr) { |
879 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 880 | } |
881 | /* Add MM to existing */ | |
882 | else { | |
883 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
884 | ecom_tmp.size = 1; | |
d7c0a89a | 885 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 886 | |
f9a78910 DS |
887 | if (attr->ecommunity) |
888 | attr->ecommunity = | |
889 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
890 | else | |
891 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 892 | } |
128ea8ab | 893 | } |
894 | ||
895 | /* Install EVPN route into zebra. */ | |
d62a17ae | 896 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
d594a14c | 897 | struct prefix_evpn *p, struct bgp_path_info *pi) |
128ea8ab | 898 | { |
d62a17ae | 899 | int ret; |
d594a14c | 900 | uint8_t flags; |
b16dd019 | 901 | int flood_control; |
128ea8ab | 902 | |
d594a14c AK |
903 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
904 | flags = 0; | |
905 | if (pi->attr->sticky) | |
906 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
907 | if (pi->attr->default_gw) | |
908 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
909 | if (is_evpn_prefix_ipaddr_v6(p) && | |
910 | pi->attr->router_flag) | |
911 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
912 | ret = bgp_zebra_send_remote_macip( | |
913 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
914 | mac_mobility_seqnum(pi->attr)); | |
915 | } else { | |
b16dd019 AK |
916 | switch (pi->attr->pmsi_tnl_type) { |
917 | case PMSI_TNLTYPE_INGR_REPL: | |
918 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
919 | break; | |
920 | ||
921 | case PMSI_TNLTYPE_PIM_SM: | |
922 | flood_control = VXLAN_FLOOD_PIM_SM; | |
923 | break; | |
924 | ||
925 | default: | |
926 | flood_control = VXLAN_FLOOD_DISABLED; | |
927 | break; | |
928 | } | |
929 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 930 | } |
128ea8ab | 931 | |
d62a17ae | 932 | return ret; |
128ea8ab | 933 | } |
934 | ||
935 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 936 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
937 | struct prefix_evpn *p, | |
938 | struct in_addr remote_vtep_ip) | |
128ea8ab | 939 | { |
d62a17ae | 940 | int ret; |
128ea8ab | 941 | |
d62a17ae | 942 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
943 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 944 | 0, 0, 0); |
d62a17ae | 945 | else |
b16dd019 AK |
946 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
947 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 948 | |
d62a17ae | 949 | return ret; |
128ea8ab | 950 | } |
951 | ||
952 | /* | |
953 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
954 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
955 | * from peers. | |
956 | */ | |
d62a17ae | 957 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
958 | struct bgp_node *rn, | |
4b7e6066 | 959 | struct bgp_path_info *old_local) |
128ea8ab | 960 | { |
d62a17ae | 961 | struct bgp_node *global_rn; |
40381db7 | 962 | struct bgp_path_info *pi; |
d62a17ae | 963 | afi_t afi = AFI_L2VPN; |
964 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 965 | |
d62a17ae | 966 | /* Locate route node in the global EVPN routing table. Note that |
967 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
968 | * L3VPN routes. | |
969 | */ | |
970 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
971 | (struct prefix *)&rn->p, &vpn->prd); | |
972 | if (global_rn) { | |
973 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 974 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 975 | |
d62a17ae | 976 | /* Schedule for processing - withdraws to peers happen from |
977 | * this table. | |
978 | */ | |
40381db7 | 979 | if (pi) |
d62a17ae | 980 | bgp_process(bgp, global_rn, afi, safi); |
981 | bgp_unlock_node(global_rn); | |
982 | } | |
128ea8ab | 983 | |
d62a17ae | 984 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 985 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 986 | } |
987 | ||
50f74cf1 | 988 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
989 | { | |
990 | struct in_addr *ip; | |
991 | ||
992 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 993 | |
994 | ip->s_addr = vtep.s_addr; | |
995 | return ip; | |
996 | } | |
997 | ||
998 | static void es_vtep_free(struct in_addr *ip) | |
999 | { | |
1000 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
1001 | } | |
1002 | ||
1003 | /* check if VTEP is already part of the list */ | |
1004 | static int is_vtep_present_in_list(struct list *list, | |
1005 | struct in_addr vtep) | |
1006 | { | |
1007 | struct listnode *node = NULL; | |
1008 | struct in_addr *tmp; | |
1009 | ||
1010 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
1011 | if (tmp->s_addr == vtep.s_addr) | |
1012 | return 1; | |
1013 | } | |
1014 | return 0; | |
1015 | } | |
1016 | ||
2bb9eff4 DS |
1017 | /* |
1018 | * Best path for ES route was changed, | |
1019 | * update the list of VTEPs for this ES | |
1020 | */ | |
50f74cf1 | 1021 | static int evpn_es_install_vtep(struct bgp *bgp, |
1022 | struct evpnes *es, | |
1023 | struct prefix_evpn *p, | |
1024 | struct in_addr rvtep) | |
1025 | { | |
1026 | struct in_addr *vtep_ip; | |
1027 | ||
1028 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1029 | return 0; | |
1030 | ||
1031 | ||
1032 | vtep_ip = es_vtep_new(rvtep); | |
1033 | if (vtep_ip) | |
1034 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1035 | return 0; | |
1036 | } | |
1037 | ||
2bb9eff4 DS |
1038 | /* |
1039 | * Best path for ES route was changed, | |
1040 | * update the list of VTEPs for this ES | |
1041 | */ | |
50f74cf1 | 1042 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1043 | struct evpnes *es, | |
1044 | struct prefix_evpn *p, | |
1045 | struct in_addr rvtep) | |
1046 | { | |
1047 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1048 | struct in_addr *tmp; | |
1049 | ||
1050 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1051 | if (tmp->s_addr == rvtep.s_addr) { | |
1052 | es_vtep_free(tmp); | |
1053 | node_to_del = node; | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | if (node_to_del) | |
1058 | list_delete_node(es->vtep_list, node_to_del); | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | /* | |
1064 | * Calculate the best path for a ES(type-4) route. | |
1065 | */ | |
1066 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1067 | struct evpnes *es, | |
1068 | struct bgp_node *rn) | |
1069 | { | |
1070 | int ret = 0; | |
1071 | afi_t afi = AFI_L2VPN; | |
1072 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1073 | struct bgp_path_info *old_select; /* old best */ |
1074 | struct bgp_path_info *new_select; /* new best */ | |
1075 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1076 | |
1077 | /* Compute the best path. */ | |
1078 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1079 | &old_and_new, afi, safi); | |
1080 | old_select = old_and_new.old; | |
1081 | new_select = old_and_new.new; | |
1082 | ||
2bb9eff4 DS |
1083 | /* |
1084 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1085 | * updated |
1086 | */ | |
1087 | if (old_select && old_select == new_select | |
1088 | && old_select->type == ZEBRA_ROUTE_BGP | |
1089 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1090 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1091 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1092 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
50f74cf1 | 1093 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1094 | ret = evpn_es_install_vtep(bgp, es, | |
1095 | (struct prefix_evpn *)&rn->p, | |
1096 | old_select->attr->nexthop); | |
1097 | } | |
1defdda8 | 1098 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1099 | bgp_zebra_clear_route_change_flags(rn); |
1100 | return ret; | |
1101 | } | |
1102 | ||
1103 | /* If the user did a "clear" this flag will be set */ | |
1104 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1105 | ||
2bb9eff4 DS |
1106 | /* |
1107 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1108 | * into the zebra RIB. |
1109 | */ | |
1110 | if (old_select || new_select) | |
1111 | bgp_bump_version(rn); | |
1112 | ||
1113 | if (old_select) | |
18ee8310 | 1114 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1115 | if (new_select) { |
18ee8310 DS |
1116 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1117 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1118 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1119 | } |
1120 | ||
1121 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1122 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1123 | ret = evpn_es_install_vtep(bgp, es, | |
1124 | (struct prefix_evpn *)&rn->p, | |
1125 | new_select->attr->nexthop); | |
1126 | } else { | |
1127 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1128 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1129 | ret = evpn_es_uninstall_vtep( |
1130 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1131 | old_select->attr->nexthop); | |
50f74cf1 | 1132 | } |
1133 | ||
1134 | /* Clear any route change flags. */ | |
1135 | bgp_zebra_clear_route_change_flags(rn); | |
1136 | ||
18ee8310 | 1137 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1138 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1139 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1140 | |
1141 | return ret; | |
1142 | } | |
1143 | ||
128ea8ab | 1144 | /* |
1145 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1146 | * if appropriate. | |
1147 | */ | |
d62a17ae | 1148 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1149 | struct bgp_node *rn) | |
1150 | { | |
4b7e6066 DS |
1151 | struct bgp_path_info *old_select, *new_select; |
1152 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1153 | afi_t afi = AFI_L2VPN; |
1154 | safi_t safi = SAFI_EVPN; | |
1155 | int ret = 0; | |
1156 | ||
1157 | /* Compute the best path. */ | |
1158 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1159 | afi, safi); | |
1160 | old_select = old_and_new.old; | |
1161 | new_select = old_and_new.new; | |
1162 | ||
1163 | /* If the best path hasn't changed - see if there is still something to | |
1164 | * update | |
1165 | * to zebra RIB. | |
1166 | */ | |
1167 | if (old_select && old_select == new_select | |
1168 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1169 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1170 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1171 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1172 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
d594a14c | 1173 | if (bgp_zebra_has_route_changed(rn, old_select)) |
996c9314 LB |
1174 | ret = evpn_zebra_install( |
1175 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
d594a14c | 1176 | old_select); |
1defdda8 | 1177 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1178 | bgp_zebra_clear_route_change_flags(rn); |
1179 | return ret; | |
1180 | } | |
1181 | ||
1182 | /* If the user did a "clear" this flag will be set */ | |
1183 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1184 | ||
1185 | /* bestpath has changed; update relevant fields and install or uninstall | |
1186 | * into the zebra RIB. | |
1187 | */ | |
1188 | if (old_select || new_select) | |
1189 | bgp_bump_version(rn); | |
1190 | ||
1191 | if (old_select) | |
18ee8310 | 1192 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1193 | if (new_select) { |
18ee8310 DS |
1194 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1195 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1196 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1197 | } |
1198 | ||
1199 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1200 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
d62a17ae | 1201 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
d594a14c AK |
1202 | new_select); |
1203 | ||
d62a17ae | 1204 | /* If an old best existed and it was a "local" route, the only |
1205 | * reason | |
1206 | * it would be supplanted is due to MAC mobility procedures. So, | |
1207 | * we | |
1208 | * need to do an implicit delete and withdraw that route from | |
1209 | * peers. | |
1210 | */ | |
1211 | if (old_select && old_select->peer == bgp->peer_self | |
1212 | && old_select->type == ZEBRA_ROUTE_BGP | |
1213 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1214 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1215 | } else { | |
1216 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1217 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1218 | ret = evpn_zebra_uninstall(bgp, vpn, |
1219 | (struct prefix_evpn *)&rn->p, | |
1220 | old_select->attr->nexthop); | |
1221 | } | |
1222 | ||
1223 | /* Clear any route change flags. */ | |
1224 | bgp_zebra_clear_route_change_flags(rn); | |
1225 | ||
18ee8310 | 1226 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1227 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1228 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1229 | |
1230 | return ret; | |
128ea8ab | 1231 | } |
1232 | ||
ead40654 MK |
1233 | /* |
1234 | * Return true if the local ri for this rn is of type gateway mac | |
1235 | */ | |
1236 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1237 | { | |
40381db7 DS |
1238 | struct bgp_path_info *tmp_pi = NULL; |
1239 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1240 | |
40381db7 | 1241 | local_pi = NULL; |
6f94b685 DS |
1242 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1243 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1244 | if (tmp_pi->peer == bgp->peer_self |
1245 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1246 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1247 | local_pi = tmp_pi; | |
ead40654 MK |
1248 | } |
1249 | ||
40381db7 | 1250 | if (!local_pi) |
ead40654 MK |
1251 | return 0; |
1252 | ||
40381db7 | 1253 | return local_pi->attr->default_gw; |
ead40654 MK |
1254 | } |
1255 | ||
c85c03c7 | 1256 | |
1257 | /* | |
1258 | * Return true if the local ri for this rn has sticky set | |
1259 | */ | |
d62a17ae | 1260 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1261 | { |
40381db7 DS |
1262 | struct bgp_path_info *tmp_pi; |
1263 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1264 | |
40381db7 | 1265 | local_pi = NULL; |
6f94b685 DS |
1266 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1267 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1268 | if (tmp_pi->peer == bgp->peer_self |
1269 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1270 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1271 | local_pi = tmp_pi; | |
d62a17ae | 1272 | } |
c85c03c7 | 1273 | |
40381db7 | 1274 | if (!local_pi) |
d62a17ae | 1275 | return 0; |
c85c03c7 | 1276 | |
40381db7 | 1277 | return local_pi->attr->sticky; |
c85c03c7 | 1278 | } |
1279 | ||
50f74cf1 | 1280 | /* |
1281 | * create or update EVPN type4 route entry. | |
1282 | * This could be in the ES table or the global table. | |
1283 | * TODO: handle remote ES (type4) routes as well | |
1284 | */ | |
4b7e6066 | 1285 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1286 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1287 | struct bgp_node *rn, struct attr *attr, |
1288 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1289 | int *route_changed) |
1290 | { | |
1291 | char buf[ESI_STR_LEN]; | |
1292 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1293 | struct bgp_path_info *tmp_pi = NULL; |
1294 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1295 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1296 | struct attr *attr_new = NULL; |
1297 | struct prefix_evpn *evp = NULL; | |
1298 | ||
1299 | *ri = NULL; | |
1300 | *route_changed = 1; | |
1301 | evp = (struct prefix_evpn *)&rn->p; | |
1302 | ||
1303 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1304 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1305 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1306 | if (tmp_pi->peer == bgp->peer_self |
1307 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1308 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1309 | local_pi = tmp_pi; | |
1310 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1311 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1312 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1313 | remote_pi = tmp_pi; | |
50f74cf1 | 1314 | } |
1315 | ||
6f94b685 | 1316 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1317 | * An ES route has esi + vtep_ip as the key, |
1318 | * We shouldn't see the same route from any other vtep. | |
1319 | */ | |
40381db7 | 1320 | if (remote_pi) { |
af4c2728 | 1321 | flog_err( |
e50f7cfd | 1322 | EC_BGP_ES_INVALID, |
14454c9f DS |
1323 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1324 | bgp->vrf_id, | |
1325 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1326 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1327 | return -1; |
1328 | } | |
1329 | ||
40381db7 | 1330 | if (!local_pi && !add) |
50f74cf1 | 1331 | return 0; |
1332 | ||
1333 | /* create or update the entry */ | |
40381db7 | 1334 | if (!local_pi) { |
50f74cf1 | 1335 | |
1336 | /* Add or update attribute to hash */ | |
1337 | attr_new = bgp_attr_intern(attr); | |
1338 | ||
1339 | /* Create new route with its attribute. */ | |
40381db7 DS |
1340 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1341 | bgp->peer_self, attr_new, rn); | |
1342 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1343 | |
1344 | /* add the newly created path to the route-node */ | |
40381db7 | 1345 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1346 | } else { |
40381db7 DS |
1347 | tmp_pi = local_pi; |
1348 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1349 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1350 | *route_changed = 0; |
1351 | else { | |
1352 | /* The attribute has changed. | |
1353 | * Add (or update) attribute to hash. */ | |
1354 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1355 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1356 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1357 | |
1358 | /* Restore route, if needed. */ | |
40381db7 DS |
1359 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1360 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1361 | |
1362 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1363 | bgp_attr_unintern(&tmp_pi->attr); |
1364 | tmp_pi->attr = attr_new; | |
1365 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1366 | } |
1367 | } | |
1368 | ||
1369 | /* Return back the route entry. */ | |
40381db7 | 1370 | *ri = tmp_pi; |
50f74cf1 | 1371 | return 0; |
1372 | } | |
1373 | ||
1374 | /* update evpn es (type-4) route */ | |
1375 | static int update_evpn_type4_route(struct bgp *bgp, | |
1376 | struct evpnes *es, | |
1377 | struct prefix_evpn *p) | |
1378 | { | |
1379 | int ret = 0; | |
1380 | int route_changed = 0; | |
1381 | char buf[ESI_STR_LEN]; | |
1382 | char buf1[INET6_ADDRSTRLEN]; | |
1383 | afi_t afi = AFI_L2VPN; | |
1384 | safi_t safi = SAFI_EVPN; | |
1385 | struct attr attr; | |
1386 | struct attr *attr_new = NULL; | |
1387 | struct bgp_node *rn = NULL; | |
40381db7 | 1388 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1389 | |
1390 | memset(&attr, 0, sizeof(struct attr)); | |
1391 | ||
1392 | /* Build path-attribute for this route. */ | |
1393 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1394 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1395 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1396 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1397 | ||
1398 | /* Set up extended community. */ | |
1399 | build_evpn_type4_route_extcomm(es, &attr); | |
1400 | ||
1401 | /* First, create (or fetch) route node within the ESI. */ | |
1402 | /* NOTE: There is no RD here. */ | |
1403 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1404 | ||
1405 | /* Create or update route entry. */ | |
40381db7 DS |
1406 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1407 | &pi, &route_changed); | |
50f74cf1 | 1408 | if (ret != 0) { |
1c50c1c0 QY |
1409 | flog_err(EC_BGP_ES_INVALID, |
1410 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1411 | bgp->vrf_id, | |
1412 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1413 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1414 | } |
1415 | ||
40381db7 DS |
1416 | assert(pi); |
1417 | attr_new = pi->attr; | |
50f74cf1 | 1418 | |
1419 | /* Perform route selection; | |
1420 | * this is just to set the flags correctly | |
1421 | * as local route in the ES always wins. | |
1422 | */ | |
1423 | evpn_es_route_select_install(bgp, es, rn); | |
1424 | bgp_unlock_node(rn); | |
1425 | ||
1426 | /* If this is a new route or some attribute has changed, export the | |
1427 | * route to the global table. The route will be advertised to peers | |
1428 | * from there. Note that this table is a 2-level tree (RD-level + | |
1429 | * Prefix-level) similar to L3VPN routes. | |
1430 | */ | |
1431 | if (route_changed) { | |
40381db7 | 1432 | struct bgp_path_info *global_pi; |
50f74cf1 | 1433 | |
1434 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1435 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1436 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1437 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1438 | |
1439 | /* Schedule for processing and unlock node. */ | |
1440 | bgp_process(bgp, rn, afi, safi); | |
1441 | bgp_unlock_node(rn); | |
1442 | } | |
1443 | ||
1444 | /* Unintern temporary. */ | |
1445 | aspath_unintern(&attr.aspath); | |
1446 | return 0; | |
1447 | } | |
1448 | ||
5e53dce3 | 1449 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1450 | struct bgp *bgp_vrf, afi_t afi, |
1451 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1452 | struct attr *attr, int *route_changed) |
342dd0c6 | 1453 | { |
1454 | struct attr *attr_new = NULL; | |
40381db7 | 1455 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1456 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1457 | struct bgp_path_info *local_pi = NULL; |
1458 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1459 | |
5424b7ba | 1460 | *route_changed = 0; |
342dd0c6 | 1461 | /* locate the local route entry if any */ |
6f94b685 DS |
1462 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1463 | tmp_pi = tmp_pi->next) { | |
5e53dce3 | 1464 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1465 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1466 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1467 | local_pi = tmp_pi; | |
342dd0c6 | 1468 | } |
1469 | ||
2bb9eff4 | 1470 | /* |
0437e105 | 1471 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1472 | * Otherwise see if route attr has changed |
523cafc4 | 1473 | */ |
40381db7 | 1474 | if (!local_pi) { |
342dd0c6 | 1475 | |
5424b7ba MK |
1476 | /* route has changed as this is the first entry */ |
1477 | *route_changed = 1; | |
1478 | ||
342dd0c6 | 1479 | /* Add (or update) attribute to hash. */ |
1480 | attr_new = bgp_attr_intern(attr); | |
1481 | ||
1482 | /* create the route info from attribute */ | |
40381db7 | 1483 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
5e53dce3 | 1484 | bgp_evpn->peer_self, attr_new, rn); |
40381db7 | 1485 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1486 | |
b57ba6d2 | 1487 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1488 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1489 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1490 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1491 | pi->extra->num_labels = 1; | |
342dd0c6 | 1492 | |
1493 | /* add the route entry to route node*/ | |
40381db7 | 1494 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1495 | } else { |
1496 | ||
40381db7 DS |
1497 | tmp_pi = local_pi; |
1498 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1499 | |
1500 | /* attribute changed */ | |
1501 | *route_changed = 1; | |
1502 | ||
342dd0c6 | 1503 | /* The attribute has changed. */ |
1504 | /* Add (or update) attribute to hash. */ | |
1505 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1506 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1507 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1508 | |
1509 | /* Restore route, if needed. */ | |
40381db7 DS |
1510 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1511 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1512 | |
1513 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1514 | bgp_attr_unintern(&tmp_pi->attr); |
1515 | tmp_pi->attr = attr_new; | |
1516 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1517 | } |
1518 | } | |
1519 | return 0; | |
1520 | } | |
1521 | ||
1522 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1523 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1524 | struct attr *src_attr) | |
342dd0c6 | 1525 | { |
1526 | afi_t afi = AFI_L2VPN; | |
1527 | safi_t safi = SAFI_EVPN; | |
1528 | struct attr attr; | |
1529 | struct bgp_node *rn = NULL; | |
5e53dce3 | 1530 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1531 | int route_changed = 0; |
342dd0c6 | 1532 | |
5e53dce3 T |
1533 | bgp_evpn = bgp_get_evpn(); |
1534 | if (!bgp_evpn) | |
faafdfa8 | 1535 | return 0; |
342dd0c6 | 1536 | |
2f69f6d3 | 1537 | /* Build path attribute for this route - use the source attr, if |
1538 | * present, else treat as locally originated. | |
1539 | */ | |
1540 | if (src_attr) | |
1541 | bgp_attr_dup(&attr, src_attr); | |
1542 | else { | |
1543 | memset(&attr, 0, sizeof(struct attr)); | |
1544 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1545 | } | |
1546 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1547 | attr.nexthop = bgp_vrf->originator_ip; |
1548 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1549 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1550 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1551 | ||
1552 | /* Setup RT and encap extended community */ | |
1553 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1554 | ||
1555 | /* get the route node in global table */ | |
5e53dce3 | 1556 | rn = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
996c9314 | 1557 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1558 | assert(rn); |
1559 | ||
1560 | /* create or update the route entry within the route node */ | |
5e53dce3 | 1561 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, rn, &attr, |
996c9314 | 1562 | &route_changed); |
342dd0c6 | 1563 | |
1564 | /* schedule for processing and unlock node */ | |
5424b7ba | 1565 | if (route_changed) { |
5e53dce3 | 1566 | bgp_process(bgp_evpn, rn, afi, safi); |
5424b7ba MK |
1567 | bgp_unlock_node(rn); |
1568 | } | |
342dd0c6 | 1569 | |
1570 | /* uninten temporary */ | |
5ee65f6f | 1571 | if (!src_attr) |
1572 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1573 | return 0; |
1574 | } | |
1575 | ||
128ea8ab | 1576 | /* |
1577 | * Create or update EVPN route entry. This could be in the VNI route table | |
1578 | * or the global route table. | |
1579 | */ | |
d62a17ae | 1580 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1581 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1582 | struct attr *attr, int add, |
40381db7 | 1583 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1584 | uint32_t seq) |
d62a17ae | 1585 | { |
40381db7 DS |
1586 | struct bgp_path_info *tmp_pi; |
1587 | struct bgp_path_info *local_pi; | |
d62a17ae | 1588 | struct attr *attr_new; |
b57ba6d2 | 1589 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1590 | uint32_t num_labels = 1; |
d62a17ae | 1591 | int route_change = 1; |
d7c0a89a | 1592 | uint8_t sticky = 0; |
b57ba6d2 | 1593 | struct prefix_evpn *evp; |
d62a17ae | 1594 | |
40381db7 | 1595 | *pi = NULL; |
b57ba6d2 MK |
1596 | evp = (struct prefix_evpn *)&rn->p; |
1597 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1598 | |
f07e1c99 | 1599 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1600 | local_pi = NULL; |
6f94b685 DS |
1601 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1602 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1603 | if (tmp_pi->peer == bgp->peer_self |
1604 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1605 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1606 | local_pi = tmp_pi; | |
d62a17ae | 1607 | } |
1608 | ||
1609 | /* If route doesn't exist already, create a new one, if told to. | |
1610 | * Otherwise act based on whether the attributes of the route have | |
1611 | * changed or not. | |
1612 | */ | |
40381db7 | 1613 | if (!local_pi && !add) |
d62a17ae | 1614 | return 0; |
1615 | ||
f07e1c99 | 1616 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1617 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1618 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1619 | |
40381db7 | 1620 | if (!local_pi) { |
d62a17ae | 1621 | /* Add (or update) attribute to hash. */ |
1622 | attr_new = bgp_attr_intern(attr); | |
1623 | ||
1624 | /* Extract MAC mobility sequence number, if any. */ | |
1625 | attr_new->mm_seqnum = | |
1626 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1627 | attr_new->sticky = sticky; | |
1628 | ||
1629 | /* Create new route with its attribute. */ | |
40381db7 | 1630 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1631 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1632 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1633 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1634 | |
1635 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1636 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1637 | |
1638 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1639 | * Only attach second label if we are advertising two labels for | |
1640 | * type-2 routes. | |
1641 | */ | |
996c9314 LB |
1642 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1643 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1644 | vni_t l3vni; |
1645 | ||
1646 | l3vni = bgpevpn_get_l3vni(vpn); | |
1647 | if (l3vni) { | |
1648 | vni2label(l3vni, &label[1]); | |
1649 | num_labels++; | |
1650 | } | |
1651 | } | |
d62a17ae | 1652 | |
40381db7 DS |
1653 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1654 | tmp_pi->extra->num_labels = num_labels; | |
1655 | bgp_path_info_add(rn, tmp_pi); | |
d62a17ae | 1656 | } else { |
40381db7 DS |
1657 | tmp_pi = local_pi; |
1658 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1659 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1660 | route_change = 0; |
1661 | else { | |
c48d9f5f MK |
1662 | /* |
1663 | * The attributes have changed, type-2 routes needs to | |
1664 | * be advertised with right labels. | |
1665 | */ | |
1666 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1667 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1668 | && CHECK_FLAG(vpn->flags, | |
1669 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1670 | vni_t l3vni; |
1671 | ||
1672 | l3vni = bgpevpn_get_l3vni(vpn); | |
1673 | if (l3vni) { | |
1674 | vni2label(l3vni, &label[1]); | |
1675 | num_labels++; | |
1676 | } | |
1677 | } | |
40381db7 DS |
1678 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1679 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1680 | |
d62a17ae | 1681 | /* The attribute has changed. */ |
1682 | /* Add (or update) attribute to hash. */ | |
1683 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1684 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1685 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1686 | |
f07e1c99 | 1687 | /* Extract MAC mobility sequence number, if any. */ |
1688 | attr_new->mm_seqnum = | |
1689 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1690 | attr_new->sticky = sticky; | |
1691 | ||
d62a17ae | 1692 | /* Restore route, if needed. */ |
40381db7 DS |
1693 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1694 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1695 | |
1696 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1697 | bgp_attr_unintern(&tmp_pi->attr); |
1698 | tmp_pi->attr = attr_new; | |
1699 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1700 | } |
1701 | } | |
1702 | ||
1703 | /* Return back the route entry. */ | |
40381db7 | 1704 | *pi = tmp_pi; |
d62a17ae | 1705 | return route_change; |
128ea8ab | 1706 | } |
1707 | ||
ec0ab544 AK |
1708 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1709 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1710 | { | |
1711 | struct bgp_path_info *tmp_ri; | |
1712 | struct bgp_path_info *curr_select = NULL; | |
1713 | ||
1714 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1715 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1716 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1717 | curr_select = tmp_ri; | |
1718 | break; | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1723 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1724 | evpn_zebra_install(bgp, vpn, | |
1725 | (struct prefix_evpn *)&rn->p, | |
1726 | curr_select); | |
1727 | } | |
1728 | ||
6d8c603a AK |
1729 | /* |
1730 | * If the local route was not selected evict it and tell zebra to re-add | |
1731 | * the best remote dest. | |
1732 | * | |
1733 | * Typically a local path added by zebra is expected to be selected as | |
1734 | * best. In which case when a remote path wins as best (later) | |
1735 | * evpn_route_select_install itself evicts the older-local-best path. | |
1736 | * | |
1737 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1738 | * is possible that the local path is no longer the "older" best path. | |
1739 | * It is a path that was never designated as best and hence requires | |
1740 | * additional handling to prevent bgp from injecting and holding on to a | |
1741 | * non-best local path. | |
1742 | */ | |
1743 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1744 | struct bgpevpn *vpn, | |
1745 | struct bgp_node *rn, | |
9a8897aa | 1746 | struct bgp_path_info *local_pi) |
6d8c603a | 1747 | { |
6d8c603a AK |
1748 | char buf[PREFIX_STRLEN]; |
1749 | ||
6d8c603a AK |
1750 | /* local path was not picked as the winner; kick it out */ |
1751 | if (bgp_debug_zebra(NULL)) { | |
1752 | zlog_debug("evicting local evpn prefix %s as remote won", | |
1753 | prefix2str(&rn->p, buf, sizeof(buf))); | |
1754 | } | |
6d8c603a AK |
1755 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1756 | bgp_path_info_reap(rn, local_pi); | |
1757 | ||
1758 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1759 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1760 | } |
1761 | ||
128ea8ab | 1762 | /* |
1763 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1764 | * and schedule for processing. | |
1765 | */ | |
d62a17ae | 1766 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1767 | struct prefix_evpn *p, uint8_t flags, |
1768 | uint32_t seq) | |
128ea8ab | 1769 | { |
d62a17ae | 1770 | struct bgp_node *rn; |
1771 | struct attr attr; | |
1772 | struct attr *attr_new; | |
1ec31309 | 1773 | int add_l3_ecomm = 0; |
40381db7 | 1774 | struct bgp_path_info *pi; |
d62a17ae | 1775 | afi_t afi = AFI_L2VPN; |
1776 | safi_t safi = SAFI_EVPN; | |
1777 | int route_change; | |
128ea8ab | 1778 | |
d62a17ae | 1779 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1780 | |
d62a17ae | 1781 | /* Build path-attribute for this route. */ |
1782 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1783 | attr.nexthop = vpn->originator_ip; | |
1784 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1785 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1786 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1787 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1788 | attr.router_flag = CHECK_FLAG(flags, |
1789 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1790 | |
1791 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1792 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1793 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1794 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1795 | } | |
be41eb68 | 1796 | |
1ec31309 | 1797 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1798 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1799 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1800 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1801 | |
1ec31309 | 1802 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1803 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1804 | * these routes. | |
1805 | */ | |
1806 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1807 | (is_evpn_prefix_ipaddr_v4(p) || |
1808 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1809 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1810 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1811 | add_l3_ecomm = 1; |
1812 | ||
1813 | /* Set up extended community. */ | |
1814 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1815 | |
d62a17ae | 1816 | /* First, create (or fetch) route node within the VNI. */ |
1817 | /* NOTE: There is no RD here. */ | |
1818 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1819 | |
d62a17ae | 1820 | /* Create or update route entry. */ |
1821 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1822 | 1, &pi, flags, seq); |
1823 | assert(pi); | |
1824 | attr_new = pi->attr; | |
128ea8ab | 1825 | |
6d8c603a AK |
1826 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1827 | bgp_path_info_lock(pi); | |
d62a17ae | 1828 | /* Perform route selection; this is just to set the flags correctly |
1829 | * as local route in the VNI always wins. | |
1830 | */ | |
1831 | evpn_route_select_install(bgp, vpn, rn); | |
6d8c603a | 1832 | /* |
9a8897aa AK |
1833 | * If the new local route was not selected evict it and tell zebra |
1834 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1835 | * routes. | |
6d8c603a | 1836 | */ |
9a8897aa AK |
1837 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1838 | route_change = 0; | |
1839 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1840 | } | |
6d8c603a AK |
1841 | bgp_path_info_unlock(pi); |
1842 | ||
d62a17ae | 1843 | bgp_unlock_node(rn); |
128ea8ab | 1844 | |
d62a17ae | 1845 | /* If this is a new route or some attribute has changed, export the |
1846 | * route to the global table. The route will be advertised to peers | |
1847 | * from there. Note that this table is a 2-level tree (RD-level + | |
1848 | * Prefix-level) similar to L3VPN routes. | |
1849 | */ | |
1850 | if (route_change) { | |
40381db7 | 1851 | struct bgp_path_info *global_pi; |
128ea8ab | 1852 | |
d62a17ae | 1853 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1854 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1855 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1856 | &global_pi, flags, seq); |
128ea8ab | 1857 | |
d62a17ae | 1858 | /* Schedule for processing and unlock node. */ |
1859 | bgp_process(bgp, rn, afi, safi); | |
1860 | bgp_unlock_node(rn); | |
1861 | } | |
128ea8ab | 1862 | |
d62a17ae | 1863 | /* Unintern temporary. */ |
1864 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1865 | |
d62a17ae | 1866 | return 0; |
128ea8ab | 1867 | } |
1868 | ||
50f74cf1 | 1869 | /* |
1870 | * Delete EVPN route entry. | |
1871 | * The entry can be in ESI/VNI table or the global table. | |
1872 | */ | |
4b7e6066 | 1873 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1874 | struct bgp_node *rn, |
40381db7 | 1875 | struct bgp_path_info **pi) |
342dd0c6 | 1876 | { |
40381db7 | 1877 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1878 | |
40381db7 | 1879 | *pi = NULL; |
342dd0c6 | 1880 | |
50f74cf1 | 1881 | /* Now, find matching route. */ |
6f94b685 DS |
1882 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1883 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1884 | if (tmp_pi->peer == bgp->peer_self |
1885 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1886 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1887 | break; |
1888 | ||
40381db7 | 1889 | *pi = tmp_pi; |
342dd0c6 | 1890 | |
1891 | /* Mark route for delete. */ | |
40381db7 DS |
1892 | if (tmp_pi) |
1893 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1894 | } |
1895 | ||
50f74cf1 | 1896 | |
1897 | ||
1898 | /* Delete EVPN ES (type-4) route */ | |
1899 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1900 | struct evpnes *es, | |
1901 | struct prefix_evpn *p) | |
1902 | { | |
1903 | afi_t afi = AFI_L2VPN; | |
1904 | safi_t safi = SAFI_EVPN; | |
40381db7 | 1905 | struct bgp_path_info *pi; |
50f74cf1 | 1906 | struct bgp_node *rn = NULL; /* rn in esi table */ |
1907 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1908 | ||
1909 | /* First, locate the route node within the ESI. | |
1910 | * If it doesn't exist, ther is nothing to do. | |
1911 | * Note: there is no RD here. | |
1912 | */ | |
1913 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1914 | if (!rn) |
50f74cf1 | 1915 | return 0; |
1916 | ||
1917 | /* Next, locate route node in the global EVPN routing table. | |
1918 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1919 | */ | |
1920 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1921 | (struct prefix *)p, &es->prd); | |
1922 | if (global_rn) { | |
1923 | ||
1924 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1925 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 1926 | |
1927 | /* Schedule for processing - withdraws to peers happen from | |
1928 | * this table. | |
1929 | */ | |
40381db7 | 1930 | if (pi) |
50f74cf1 | 1931 | bgp_process(bgp, global_rn, afi, safi); |
1932 | bgp_unlock_node(global_rn); | |
1933 | } | |
1934 | ||
1935 | /* | |
1936 | * Delete route entry in the ESI route table. | |
1937 | * This can just be removed. | |
1938 | */ | |
40381db7 DS |
1939 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
1940 | if (pi) | |
1941 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 1942 | bgp_unlock_node(rn); |
1943 | return 0; | |
1944 | } | |
1945 | ||
342dd0c6 | 1946 | /* Delete EVPN type5 route */ |
996c9314 | 1947 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1948 | { |
1949 | afi_t afi = AFI_L2VPN; | |
1950 | safi_t safi = SAFI_EVPN; | |
1951 | struct bgp_node *rn = NULL; | |
40381db7 | 1952 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1953 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1954 | |
5e53dce3 T |
1955 | bgp_evpn = bgp_get_evpn(); |
1956 | if (!bgp_evpn) | |
faafdfa8 | 1957 | return 0; |
342dd0c6 | 1958 | |
1959 | /* locate the global route entry for this type-5 prefix */ | |
5e53dce3 | 1960 | rn = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
342dd0c6 | 1961 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
1962 | if (!rn) | |
1963 | return 0; | |
1964 | ||
5e53dce3 | 1965 | delete_evpn_route_entry(bgp_evpn, afi, safi, rn, &pi); |
40381db7 | 1966 | if (pi) |
5e53dce3 | 1967 | bgp_process(bgp_evpn, rn, afi, safi); |
342dd0c6 | 1968 | bgp_unlock_node(rn); |
1969 | return 0; | |
1970 | } | |
1971 | ||
128ea8ab | 1972 | /* |
1973 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1974 | * schedule for processing. | |
1975 | */ | |
d62a17ae | 1976 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1977 | struct prefix_evpn *p) | |
1978 | { | |
1979 | struct bgp_node *rn, *global_rn; | |
40381db7 | 1980 | struct bgp_path_info *pi; |
d62a17ae | 1981 | afi_t afi = AFI_L2VPN; |
1982 | safi_t safi = SAFI_EVPN; | |
1983 | ||
1984 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1985 | * there | |
1986 | * is nothing further to do. | |
1987 | */ | |
1988 | /* NOTE: There is no RD here. */ | |
1989 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1990 | if (!rn) | |
1991 | return 0; | |
1992 | ||
1993 | /* Next, locate route node in the global EVPN routing table. Note that | |
1994 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1995 | * L3VPN routes. | |
1996 | */ | |
1997 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1998 | (struct prefix *)p, &vpn->prd); | |
1999 | if (global_rn) { | |
2000 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2001 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 2002 | |
2003 | /* Schedule for processing - withdraws to peers happen from | |
2004 | * this table. | |
2005 | */ | |
40381db7 | 2006 | if (pi) |
d62a17ae | 2007 | bgp_process(bgp, global_rn, afi, safi); |
2008 | bgp_unlock_node(global_rn); | |
2009 | } | |
2010 | ||
2011 | /* Delete route entry in the VNI route table. This can just be removed. | |
2012 | */ | |
40381db7 | 2013 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 2014 | if (pi) { |
40381db7 | 2015 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
2016 | evpn_route_select_install(bgp, vpn, rn); |
2017 | } | |
d62a17ae | 2018 | bgp_unlock_node(rn); |
2019 | ||
2020 | return 0; | |
128ea8ab | 2021 | } |
2022 | ||
2023 | /* | |
2024 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2025 | * be scheduled for advertise to peers. | |
2026 | */ | |
d62a17ae | 2027 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2028 | { | |
2029 | afi_t afi; | |
2030 | safi_t safi; | |
2031 | struct bgp_node *rn; | |
40381db7 | 2032 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2033 | struct attr attr; |
d62a17ae | 2034 | struct attr *attr_new; |
f07e1c99 | 2035 | uint32_t seq; |
1ec31309 | 2036 | int add_l3_ecomm = 0; |
d62a17ae | 2037 | |
2038 | afi = AFI_L2VPN; | |
2039 | safi = SAFI_EVPN; | |
d62a17ae | 2040 | |
2041 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2042 | * routes updated, update corresponding entry in the global table too. | |
2043 | */ | |
2044 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2045 | rn = bgp_route_next(rn)) { | |
2046 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2047 | struct bgp_node *rd_rn; | |
40381db7 | 2048 | struct bgp_path_info *global_pi; |
d62a17ae | 2049 | |
2050 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2051 | continue; | |
2052 | ||
f07e1c99 | 2053 | /* Identify local route. */ |
6f94b685 DS |
2054 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2055 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2056 | if (tmp_pi->peer == bgp->peer_self |
2057 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2058 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2059 | break; |
7ec156a9 | 2060 | } |
d62a17ae | 2061 | |
40381db7 | 2062 | if (!tmp_pi) |
d62a17ae | 2063 | continue; |
2064 | ||
f07e1c99 | 2065 | /* |
2066 | * Build attribute per local route as the MAC mobility and | |
2067 | * some other values could differ for different routes. The | |
2068 | * attributes will be shared in the hash table. | |
2069 | */ | |
2070 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2071 | attr.nexthop = vpn->originator_ip; | |
2072 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2073 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2074 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
2075 | ||
2076 | if (evpn_route_is_sticky(bgp, rn)) | |
2077 | attr.sticky = 1; | |
2078 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2079 | attr.default_gw = 1; | |
2080 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2081 | attr.router_flag = 1; | |
2082 | } | |
2083 | ||
2084 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2085 | * using L3 VNI for type-2 routes also. | |
2086 | */ | |
2087 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2088 | !IN6_IS_ADDR_LINKLOCAL( |
2089 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2090 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2091 | bgpevpn_get_l3vni(vpn)) | |
2092 | add_l3_ecomm = 1; | |
2093 | ||
2094 | /* Set up extended community. */ | |
2095 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2096 | ||
40381db7 | 2097 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2098 | |
2099 | /* Update the route entry. */ | |
40381db7 DS |
2100 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2101 | 0, seq); | |
f07e1c99 | 2102 | |
d62a17ae | 2103 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2104 | * correctly as local route in the VNI always wins. |
d62a17ae | 2105 | */ |
2106 | evpn_route_select_install(bgp, vpn, rn); | |
2107 | ||
40381db7 | 2108 | attr_new = pi->attr; |
d62a17ae | 2109 | |
2110 | /* Update route in global routing table. */ | |
2111 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2112 | (struct prefix *)evp, &vpn->prd); | |
2113 | assert(rd_rn); | |
2114 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
40381db7 | 2115 | &global_pi, 0, |
f07e1c99 | 2116 | mac_mobility_seqnum(attr_new)); |
d62a17ae | 2117 | |
2118 | /* Schedule for processing and unlock node. */ | |
2119 | bgp_process(bgp, rd_rn, afi, safi); | |
2120 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2121 | |
f07e1c99 | 2122 | /* Unintern temporary. */ |
2123 | aspath_unintern(&attr.aspath); | |
2124 | ||
2125 | } | |
d62a17ae | 2126 | |
2127 | return 0; | |
128ea8ab | 2128 | } |
2129 | ||
2130 | /* | |
2131 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2132 | * global routing table. These are also scheduled for withdraw from peers. | |
2133 | */ | |
d62a17ae | 2134 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2135 | { |
d62a17ae | 2136 | afi_t afi; |
2137 | safi_t safi; | |
2138 | struct bgp_node *rdrn, *rn; | |
2139 | struct bgp_table *table; | |
40381db7 | 2140 | struct bgp_path_info *pi; |
128ea8ab | 2141 | |
d62a17ae | 2142 | afi = AFI_L2VPN; |
2143 | safi = SAFI_EVPN; | |
128ea8ab | 2144 | |
d62a17ae | 2145 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2146 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2147 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2148 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2149 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2150 | |
d62a17ae | 2151 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2152 | continue; | |
128ea8ab | 2153 | |
40381db7 DS |
2154 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2155 | if (pi) | |
d62a17ae | 2156 | bgp_process(bgp, rn, afi, safi); |
2157 | } | |
2158 | } | |
128ea8ab | 2159 | |
d62a17ae | 2160 | /* Unlock RD node. */ |
2161 | if (rdrn) | |
2162 | bgp_unlock_node(rdrn); | |
128ea8ab | 2163 | |
d62a17ae | 2164 | return 0; |
128ea8ab | 2165 | } |
2166 | ||
2167 | /* | |
2168 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2169 | * table as well as the per-VNI route table. | |
2170 | */ | |
d62a17ae | 2171 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2172 | { |
d62a17ae | 2173 | afi_t afi; |
2174 | safi_t safi; | |
2175 | struct bgp_node *rn; | |
40381db7 | 2176 | struct bgp_path_info *pi; |
128ea8ab | 2177 | |
d62a17ae | 2178 | afi = AFI_L2VPN; |
2179 | safi = SAFI_EVPN; | |
128ea8ab | 2180 | |
d62a17ae | 2181 | /* First, walk the global route table for this VNI's type-2 local |
2182 | * routes. | |
2183 | * EVPN routes are a 2-level table, first get the RD table. | |
2184 | */ | |
2185 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2186 | |
d62a17ae | 2187 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2188 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2189 | rn = bgp_route_next(rn)) { | |
2190 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2191 | |
d62a17ae | 2192 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2193 | continue; | |
128ea8ab | 2194 | |
40381db7 | 2195 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2196 | |
d62a17ae | 2197 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2198 | if (pi) |
2199 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2200 | } |
128ea8ab | 2201 | |
d62a17ae | 2202 | return 0; |
128ea8ab | 2203 | } |
2204 | ||
50f74cf1 | 2205 | /* |
2206 | * Delete all routes in per ES route-table | |
2207 | */ | |
2208 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2209 | { | |
2210 | struct bgp_node *rn; | |
40381db7 | 2211 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2212 | |
2213 | /* Walk this ES's route table and delete all routes. */ | |
2214 | for (rn = bgp_table_top(es->route_table); rn; | |
2215 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2216 | for (pi = bgp_node_get_bgp_path_info(rn); |
2217 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2218 | bgp_path_info_delete(rn, pi); |
2219 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2220 | } |
2221 | } | |
2222 | ||
2223 | return 0; | |
2224 | } | |
2225 | ||
128ea8ab | 2226 | /* |
2227 | * Delete all routes in the per-VNI route table. | |
2228 | */ | |
d62a17ae | 2229 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2230 | { |
d62a17ae | 2231 | struct bgp_node *rn; |
40381db7 | 2232 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2233 | |
d62a17ae | 2234 | /* Walk this VNI's route table and delete all routes. */ |
2235 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2236 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2237 | for (pi = bgp_node_get_bgp_path_info(rn); |
2238 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2239 | bgp_path_info_delete(rn, pi); |
2240 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2241 | } |
2242 | } | |
128ea8ab | 2243 | |
d62a17ae | 2244 | return 0; |
128ea8ab | 2245 | } |
2246 | ||
833b8a50 AK |
2247 | /* BUM traffic flood mode per-l2-vni */ |
2248 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2249 | struct bgpevpn *vpn) | |
2250 | { | |
2251 | /* if flooding has been globally disabled per-vni mode is | |
2252 | * not relevant | |
2253 | */ | |
2254 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2255 | return VXLAN_FLOOD_DISABLED; | |
2256 | ||
2257 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2258 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2259 | return VXLAN_FLOOD_PIM_SM; | |
2260 | ||
2261 | /* default is ingress replication */ | |
2262 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2263 | } | |
2264 | ||
128ea8ab | 2265 | /* |
2266 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2267 | * export RT getting modified or change to tunnel IP. Note that these | |
2268 | * situations need the route in the per-VNI table as well as the global | |
2269 | * table to be updated (as attributes change). | |
2270 | */ | |
d62a17ae | 2271 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2272 | { |
d62a17ae | 2273 | int ret; |
2274 | struct prefix_evpn p; | |
128ea8ab | 2275 | |
d62a17ae | 2276 | /* Update and advertise the type-3 route (only one) followed by the |
2277 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2278 | * |
2279 | * RT-3 only if doing head-end replication | |
d62a17ae | 2280 | */ |
833b8a50 AK |
2281 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2282 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
2283 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2284 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2285 | if (ret) | |
2286 | return ret; | |
2287 | } | |
128ea8ab | 2288 | |
d62a17ae | 2289 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2290 | } |
2291 | ||
50f74cf1 | 2292 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2293 | * Also remove all other routes from the per ES table. | |
2294 | * Invoked when ES is deleted. | |
2295 | */ | |
2296 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2297 | { | |
2298 | int ret; | |
2299 | char buf[ESI_STR_LEN]; | |
2300 | struct prefix_evpn p; | |
2301 | ||
2302 | /* Delete and withdraw locally learnt ES route */ | |
2303 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2304 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2305 | if (ret) { | |
e50f7cfd | 2306 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2307 | "%u failed to delete type-4 route for ESI %s", |
2308 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2309 | } |
2310 | ||
2311 | /* Delete all routes from per ES table */ | |
2312 | return delete_all_es_routes(bgp, es); | |
2313 | } | |
2314 | ||
128ea8ab | 2315 | /* |
2316 | * Delete (and withdraw) local routes for specified VNI from the global | |
2317 | * table and per-VNI table. After this, remove all other routes from | |
2318 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2319 | * (advertise-all-vni) being disabled. | |
2320 | */ | |
d62a17ae | 2321 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2322 | { |
d62a17ae | 2323 | int ret; |
2324 | struct prefix_evpn p; | |
128ea8ab | 2325 | |
d62a17ae | 2326 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2327 | * followed by type-3 routes (only one) - for this VNI. | |
2328 | */ | |
2329 | ret = delete_all_type2_routes(bgp, vpn); | |
2330 | if (ret) | |
2331 | return ret; | |
128ea8ab | 2332 | |
d62a17ae | 2333 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2334 | ret = delete_evpn_route(bgp, vpn, &p); | |
2335 | if (ret) | |
2336 | return ret; | |
128ea8ab | 2337 | |
d62a17ae | 2338 | /* Delete all routes from the per-VNI table. */ |
2339 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2340 | } |
2341 | ||
76d07c7a AK |
2342 | /* |
2343 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2344 | * remove the type-3 route if any. A new type-3 route will be generated | |
2345 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2346 | */ | |
2347 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2348 | struct in_addr mcast_grp) | |
2349 | { | |
2350 | struct prefix_evpn p; | |
2351 | ||
2352 | vpn->mcast_grp = mcast_grp; | |
2353 | ||
2354 | if (is_vni_live(vpn)) { | |
2355 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2356 | delete_evpn_route(bgp, vpn, &p); | |
2357 | } | |
2358 | ||
2359 | return 0; | |
2360 | } | |
2361 | ||
128ea8ab | 2362 | /* |
d1911c26 | 2363 | * There is a tunnel endpoint IP address change for this VNI, delete |
2364 | * prior type-3 route (if needed) and update. | |
2365 | * Note: Route re-advertisement happens elsewhere after other processing | |
2366 | * other changes. | |
128ea8ab | 2367 | */ |
d62a17ae | 2368 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2369 | struct in_addr originator_ip) | |
128ea8ab | 2370 | { |
d62a17ae | 2371 | struct prefix_evpn p; |
128ea8ab | 2372 | |
ddd16ed5 MK |
2373 | /* If VNI is not live, we only need to update the originator ip */ |
2374 | if (!is_vni_live(vpn)) { | |
2375 | vpn->originator_ip = originator_ip; | |
2376 | return 0; | |
2377 | } | |
2378 | ||
db0e1937 MK |
2379 | /* Update the tunnel-ip hash */ |
2380 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2381 | bgp_tip_add(bgp, &originator_ip); | |
2382 | ||
2383 | /* filter routes as martian nexthop db has changed */ | |
2384 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2385 | ||
d62a17ae | 2386 | /* Need to withdraw type-3 route as the originator IP is part |
2387 | * of the key. | |
2388 | */ | |
2389 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2390 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2391 | |
d62a17ae | 2392 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2393 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2394 | return 0; |
128ea8ab | 2395 | } |
2396 | ||
c011a88b DS |
2397 | static struct bgp_path_info * |
2398 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2399 | struct bgp_node *rn) | |
6b742349 DS |
2400 | { |
2401 | struct attr *attr_new; | |
2402 | struct bgp_path_info *pi; | |
2403 | ||
2404 | /* Add (or update) attribute to hash. */ | |
2405 | attr_new = bgp_attr_intern(parent_pi->attr); | |
2406 | ||
2407 | /* Create new route with its attribute. */ | |
2408 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2409 | attr_new, rn); | |
2410 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2411 | bgp_path_info_extra_get(pi); | |
2412 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2413 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2414 | if (parent_pi->extra) { | |
2415 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2416 | sizeof(pi->extra->label)); | |
2417 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
2418 | } | |
2419 | bgp_path_info_add(rn, pi); | |
c011a88b DS |
2420 | |
2421 | return pi; | |
6b742349 DS |
2422 | } |
2423 | ||
50f74cf1 | 2424 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2425 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2426 | struct prefix_evpn *p, |
40381db7 | 2427 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2428 | { |
2429 | int ret = 0; | |
2430 | struct bgp_node *rn = NULL; | |
40381db7 | 2431 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2432 | struct attr *attr_new = NULL; |
2433 | ||
2434 | /* Create (or fetch) route within the VNI. | |
2435 | * NOTE: There is no RD here. | |
2436 | */ | |
2437 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2438 | ||
2439 | /* Check if route entry is already present. */ | |
6f94b685 | 2440 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2441 | if (pi->extra |
2442 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2443 | break; |
2444 | ||
40381db7 | 2445 | if (!pi) { |
50f74cf1 | 2446 | /* Add (or update) attribute to hash. */ |
40381db7 | 2447 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2448 | |
2449 | /* Create new route with its attribute. */ | |
40381db7 DS |
2450 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2451 | parent_pi->peer, attr_new, rn); | |
2452 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2453 | bgp_path_info_extra_get(pi); | |
f4d7cb0e DS |
2454 | pi->extra->parent = bgp_path_info_lock(parent_pi); |
2455 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
40381db7 | 2456 | bgp_path_info_add(rn, pi); |
50f74cf1 | 2457 | } else { |
40381db7 DS |
2458 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2459 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2460 | bgp_unlock_node(rn); |
2461 | return 0; | |
2462 | } | |
2463 | /* The attribute has changed. */ | |
2464 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2465 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2466 | |
2467 | /* Restore route, if needed. */ | |
40381db7 DS |
2468 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2469 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2470 | |
2471 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2472 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2473 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2474 | |
2475 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2476 | bgp_attr_unintern(&pi->attr); |
2477 | pi->attr = attr_new; | |
2478 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2479 | } |
2480 | ||
2481 | /* Perform route selection and update zebra, if required. */ | |
2482 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2483 | return ret; | |
2484 | } | |
2485 | ||
d3135ba3 | 2486 | /* |
2487 | * Install route entry into the VRF routing table and invoke route selection. | |
2488 | */ | |
2489 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2490 | struct prefix_evpn *evp, | |
40381db7 | 2491 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2492 | { |
2493 | struct bgp_node *rn; | |
40381db7 | 2494 | struct bgp_path_info *pi; |
1ec31309 | 2495 | struct attr attr; |
d3135ba3 | 2496 | struct attr *attr_new; |
c4edf708 | 2497 | int ret = 0; |
d3135ba3 | 2498 | struct prefix p; |
2499 | struct prefix *pp = &p; | |
2500 | afi_t afi = 0; | |
2501 | safi_t safi = 0; | |
1eb88002 MK |
2502 | char buf[PREFIX_STRLEN]; |
2503 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2504 | |
2505 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2506 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2507 | |
1eb88002 | 2508 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2509 | zlog_debug( |
1ee069db | 2510 | "import evpn prefix %s as ip prefix %s in vrf %s", |
996c9314 LB |
2511 | prefix2str(evp, buf, sizeof(buf)), |
2512 | prefix2str(pp, buf1, sizeof(buf)), | |
2513 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2514 | } |
2515 | ||
d3135ba3 | 2516 | /* Create (or fetch) route within the VRF. */ |
2517 | /* NOTE: There is no RD here. */ | |
3714a385 | 2518 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2519 | afi = AFI_IP; |
2520 | safi = SAFI_UNICAST; | |
2521 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2522 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2523 | afi = AFI_IP6; |
2524 | safi = SAFI_UNICAST; | |
2525 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2526 | } else | |
2527 | return 0; | |
2528 | ||
1ec31309 | 2529 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2530 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2531 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2532 | * address for the rest of the code to flow through. In the case of IPv4, | |
2533 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2534 | */ |
40381db7 | 2535 | bgp_attr_dup(&attr, parent_pi->attr); |
1ec31309 | 2536 | if (afi == AFI_IP6) |
2537 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2538 | else |
2539 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2540 | |
d3135ba3 | 2541 | /* Check if route entry is already present. */ |
6f94b685 | 2542 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2543 | if (pi->extra |
2544 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2545 | break; |
2546 | ||
6b742349 | 2547 | if (!pi) |
c011a88b | 2548 | pi = bgp_create_evpn_bgp_path_info(parent_pi, rn); |
6b742349 | 2549 | else { |
40381db7 DS |
2550 | if (attrhash_cmp(pi->attr, &attr) |
2551 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2552 | bgp_unlock_node(rn); |
2553 | return 0; | |
2554 | } | |
2555 | /* The attribute has changed. */ | |
2556 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2557 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2558 | |
2559 | /* Restore route, if needed. */ | |
40381db7 DS |
2560 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2561 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2562 | |
2563 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2564 | if ((afi == AFI_IP |
2565 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2566 | || (afi == AFI_IP6 | |
2567 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2568 | &attr_new->mp_nexthop_global))) | |
2569 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2570 | |
a9f8ad9f | 2571 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2572 | /* Unintern existing, set to new. */ |
40381db7 DS |
2573 | bgp_attr_unintern(&pi->attr); |
2574 | pi->attr = attr_new; | |
2575 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2576 | } |
2577 | ||
40381db7 | 2578 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2579 | |
d3135ba3 | 2580 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2581 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2582 | |
7452e879 | 2583 | /* Process for route leaking. */ |
2584 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2585 | ||
3c11d70a CS |
2586 | bgp_unlock_node(rn); |
2587 | ||
d3135ba3 | 2588 | return ret; |
2589 | } | |
2590 | ||
128ea8ab | 2591 | /* |
2592 | * Install route entry into the VNI routing table and invoke route selection. | |
2593 | */ | |
d62a17ae | 2594 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2595 | struct prefix_evpn *p, | |
40381db7 | 2596 | struct bgp_path_info *parent_pi) |
d62a17ae | 2597 | { |
2598 | struct bgp_node *rn; | |
40381db7 | 2599 | struct bgp_path_info *pi; |
d62a17ae | 2600 | struct attr *attr_new; |
2601 | int ret; | |
2602 | ||
2603 | /* Create (or fetch) route within the VNI. */ | |
2604 | /* NOTE: There is no RD here. */ | |
2605 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2606 | ||
2607 | /* Check if route entry is already present. */ | |
6f94b685 | 2608 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2609 | if (pi->extra |
2610 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2611 | break; |
2612 | ||
bd0254af MS |
2613 | if (!pi) { |
2614 | /* Create an info */ | |
2615 | (void)bgp_create_evpn_bgp_path_info(parent_pi, rn); | |
2616 | } else { | |
40381db7 DS |
2617 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2618 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2619 | bgp_unlock_node(rn); |
2620 | return 0; | |
2621 | } | |
2622 | /* The attribute has changed. */ | |
2623 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2624 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2625 | |
50f74cf1 | 2626 | /* Restore route, if needed. */ |
40381db7 DS |
2627 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2628 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2629 | |
2630 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2631 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2632 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2633 | |
2634 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2635 | bgp_attr_unintern(&pi->attr); |
2636 | pi->attr = attr_new; | |
2637 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2638 | } |
2639 | ||
2640 | /* Perform route selection and update zebra, if required. */ | |
2641 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2642 | ||
a97a1e11 CS |
2643 | bgp_unlock_node(rn); |
2644 | ||
50f74cf1 | 2645 | return ret; |
2646 | } | |
2647 | ||
2648 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2649 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2650 | struct prefix_evpn *p, |
40381db7 | 2651 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2652 | { |
2653 | int ret; | |
2654 | struct bgp_node *rn; | |
40381db7 | 2655 | struct bgp_path_info *pi; |
50f74cf1 | 2656 | |
2657 | if (!es->route_table) | |
2658 | return 0; | |
2659 | ||
2660 | /* Locate route within the ESI. | |
2661 | * NOTE: There is no RD here. | |
2662 | */ | |
2663 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2664 | if (!rn) | |
2665 | return 0; | |
2666 | ||
2667 | /* Find matching route entry. */ | |
6f94b685 | 2668 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2669 | if (pi->extra |
2670 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2671 | break; |
d62a17ae | 2672 | |
40381db7 | 2673 | if (!pi) |
50f74cf1 | 2674 | return 0; |
d62a17ae | 2675 | |
50f74cf1 | 2676 | /* Mark entry for deletion */ |
40381db7 | 2677 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2678 | |
2679 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2680 | ret = evpn_es_route_select_install(bgp, es, rn); |
2681 | ||
2682 | /* Unlock route node. */ | |
2683 | bgp_unlock_node(rn); | |
d62a17ae | 2684 | |
2685 | return ret; | |
128ea8ab | 2686 | } |
2687 | ||
d3135ba3 | 2688 | /* |
2689 | * Uninstall route entry from the VRF routing table and send message | |
2690 | * to zebra, if appropriate. | |
2691 | */ | |
2692 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2693 | struct prefix_evpn *evp, | |
40381db7 | 2694 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2695 | { |
2696 | struct bgp_node *rn; | |
40381db7 | 2697 | struct bgp_path_info *pi; |
c4edf708 | 2698 | int ret = 0; |
d3135ba3 | 2699 | struct prefix p; |
2700 | struct prefix *pp = &p; | |
2701 | afi_t afi = 0; | |
2702 | safi_t safi = 0; | |
1eb88002 MK |
2703 | char buf[PREFIX_STRLEN]; |
2704 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2705 | |
2706 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2707 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2708 | |
1eb88002 | 2709 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2710 | zlog_debug( |
2711 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2712 | prefix2str(evp, buf, sizeof(buf)), | |
2713 | prefix2str(pp, buf1, sizeof(buf)), | |
2714 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2715 | } |
2716 | ||
d3135ba3 | 2717 | /* Locate route within the VRF. */ |
2718 | /* NOTE: There is no RD here. */ | |
3714a385 | 2719 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2720 | afi = AFI_IP; |
2721 | safi = SAFI_UNICAST; | |
2722 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2723 | } else { | |
2724 | afi = AFI_IP6; | |
2725 | safi = SAFI_UNICAST; | |
2726 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2727 | } | |
2728 | ||
2729 | if (!rn) | |
2730 | return 0; | |
2731 | ||
2732 | /* Find matching route entry. */ | |
6f94b685 | 2733 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2734 | if (pi->extra |
2735 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2736 | break; |
2737 | ||
40381db7 | 2738 | if (!pi) |
d3135ba3 | 2739 | return 0; |
2740 | ||
7452e879 | 2741 | /* Process for route leaking. */ |
2742 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2743 | ||
40381db7 | 2744 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2745 | |
d3135ba3 | 2746 | /* Mark entry for deletion */ |
40381db7 | 2747 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2748 | |
2749 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2750 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2751 | |
2752 | /* Unlock route node. */ | |
2753 | bgp_unlock_node(rn); | |
2754 | ||
2755 | return ret; | |
2756 | } | |
2757 | ||
128ea8ab | 2758 | /* |
2759 | * Uninstall route entry from the VNI routing table and send message | |
2760 | * to zebra, if appropriate. | |
2761 | */ | |
d62a17ae | 2762 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2763 | struct prefix_evpn *p, | |
40381db7 | 2764 | struct bgp_path_info *parent_pi) |
128ea8ab | 2765 | { |
d62a17ae | 2766 | struct bgp_node *rn; |
40381db7 | 2767 | struct bgp_path_info *pi; |
d62a17ae | 2768 | int ret; |
128ea8ab | 2769 | |
d62a17ae | 2770 | /* Locate route within the VNI. */ |
2771 | /* NOTE: There is no RD here. */ | |
2772 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2773 | if (!rn) | |
2774 | return 0; | |
128ea8ab | 2775 | |
d62a17ae | 2776 | /* Find matching route entry. */ |
6f94b685 | 2777 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2778 | if (pi->extra |
2779 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2780 | break; |
128ea8ab | 2781 | |
40381db7 | 2782 | if (!pi) |
d62a17ae | 2783 | return 0; |
128ea8ab | 2784 | |
d62a17ae | 2785 | /* Mark entry for deletion */ |
40381db7 | 2786 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2787 | |
d62a17ae | 2788 | /* Perform route selection and update zebra, if required. */ |
2789 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2790 | |
d62a17ae | 2791 | /* Unlock route node. */ |
2792 | bgp_unlock_node(rn); | |
128ea8ab | 2793 | |
d62a17ae | 2794 | return ret; |
128ea8ab | 2795 | } |
2796 | ||
50f74cf1 | 2797 | /* |
2798 | * Given a prefix, see if it belongs to ES. | |
2799 | */ | |
2800 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2801 | struct evpnes *es) | |
2802 | { | |
2803 | /* if not an ES route return false */ | |
2804 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2805 | return 0; | |
2806 | ||
2807 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2808 | return 1; | |
2809 | ||
2810 | return 0; | |
2811 | } | |
2812 | ||
5ba238b7 MK |
2813 | /* |
2814 | * Given a route entry and a VRF, see if this route entry should be | |
2815 | * imported into the VRF i.e., RTs match. | |
2816 | */ | |
4b7e6066 | 2817 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2818 | struct bgp_path_info *pi) |
5ba238b7 | 2819 | { |
40381db7 | 2820 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2821 | struct ecommunity *ecom; |
2822 | int i; | |
2823 | ||
2824 | assert(attr); | |
2825 | /* Route should have valid RT to be even considered. */ | |
2826 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2827 | return 0; | |
2828 | ||
2829 | ecom = attr->ecommunity; | |
2830 | if (!ecom || !ecom->size) | |
2831 | return 0; | |
2832 | ||
2833 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2834 | * matches, we're done. | |
2835 | */ | |
2836 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2837 | uint8_t *pnt; |
2838 | uint8_t type, sub_type; | |
5ba238b7 MK |
2839 | struct ecommunity_val *eval; |
2840 | struct ecommunity_val eval_tmp; | |
2841 | struct vrf_irt_node *irt; | |
2842 | ||
2843 | /* Only deal with RTs */ | |
2844 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2845 | eval = (struct ecommunity_val *)(ecom->val | |
2846 | + (i * ECOMMUNITY_SIZE)); | |
2847 | type = *pnt++; | |
2848 | sub_type = *pnt++; | |
2849 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2850 | continue; | |
2851 | ||
2852 | /* See if this RT matches specified VNIs import RTs */ | |
2853 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2854 | if (irt) |
5ba238b7 MK |
2855 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2856 | return 1; | |
2857 | ||
2858 | /* Also check for non-exact match. In this, we mask out the AS | |
2859 | * and | |
2860 | * only check on the local-admin sub-field. This is to | |
2861 | * facilitate using | |
2862 | * VNI as the RT for EBGP peering too. | |
2863 | */ | |
2864 | irt = NULL; | |
2865 | if (type == ECOMMUNITY_ENCODE_AS | |
2866 | || type == ECOMMUNITY_ENCODE_AS4 | |
2867 | || type == ECOMMUNITY_ENCODE_IP) { | |
2868 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2869 | mask_ecom_global_admin(&eval_tmp, eval); | |
2870 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2871 | } | |
5d9cbca2 | 2872 | if (irt) |
5ba238b7 MK |
2873 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2874 | return 1; | |
2875 | } | |
2876 | ||
2877 | return 0; | |
2878 | } | |
2879 | ||
128ea8ab | 2880 | /* |
2881 | * Given a route entry and a VNI, see if this route entry should be | |
2882 | * imported into the VNI i.e., RTs match. | |
2883 | */ | |
d62a17ae | 2884 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2885 | struct bgp_path_info *pi) |
d62a17ae | 2886 | { |
40381db7 | 2887 | struct attr *attr = pi->attr; |
d62a17ae | 2888 | struct ecommunity *ecom; |
2889 | int i; | |
2890 | ||
2891 | assert(attr); | |
2892 | /* Route should have valid RT to be even considered. */ | |
2893 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2894 | return 0; | |
2895 | ||
2896 | ecom = attr->ecommunity; | |
2897 | if (!ecom || !ecom->size) | |
2898 | return 0; | |
2899 | ||
2900 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2901 | * matches, we're done. | |
2902 | */ | |
2903 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2904 | uint8_t *pnt; |
2905 | uint8_t type, sub_type; | |
d62a17ae | 2906 | struct ecommunity_val *eval; |
2907 | struct ecommunity_val eval_tmp; | |
2908 | struct irt_node *irt; | |
2909 | ||
2910 | /* Only deal with RTs */ | |
2911 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2912 | eval = (struct ecommunity_val *)(ecom->val | |
2913 | + (i * ECOMMUNITY_SIZE)); | |
2914 | type = *pnt++; | |
2915 | sub_type = *pnt++; | |
2916 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2917 | continue; | |
2918 | ||
2919 | /* See if this RT matches specified VNIs import RTs */ | |
2920 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2921 | if (irt) |
d62a17ae | 2922 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2923 | return 1; | |
2924 | ||
2925 | /* Also check for non-exact match. In this, we mask out the AS | |
2926 | * and | |
2927 | * only check on the local-admin sub-field. This is to | |
2928 | * facilitate using | |
2929 | * VNI as the RT for EBGP peering too. | |
2930 | */ | |
2931 | irt = NULL; | |
2932 | if (type == ECOMMUNITY_ENCODE_AS | |
2933 | || type == ECOMMUNITY_ENCODE_AS4 | |
2934 | || type == ECOMMUNITY_ENCODE_IP) { | |
2935 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2936 | mask_ecom_global_admin(&eval_tmp, eval); | |
2937 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2938 | } | |
b1ab0dfe | 2939 | if (irt) |
d62a17ae | 2940 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2941 | return 1; | |
2942 | } | |
2943 | ||
2944 | return 0; | |
128ea8ab | 2945 | } |
2946 | ||
50f74cf1 | 2947 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2948 | struct evpnes *es, | |
2949 | int install) | |
2950 | { | |
2951 | int ret; | |
2952 | afi_t afi; | |
2953 | safi_t safi; | |
2954 | char buf[PREFIX_STRLEN]; | |
2955 | char buf1[ESI_STR_LEN]; | |
2956 | struct bgp_node *rd_rn, *rn; | |
2957 | struct bgp_table *table; | |
40381db7 | 2958 | struct bgp_path_info *pi; |
50f74cf1 | 2959 | |
2960 | afi = AFI_L2VPN; | |
2961 | safi = SAFI_EVPN; | |
2962 | ||
2bb9eff4 DS |
2963 | /* |
2964 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2965 | * imported into this VRF. Note that we need to loop through all global |
2966 | * routes to determine which route matches the import rt on vrf | |
2967 | */ | |
2968 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2969 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 2970 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 2971 | if (!table) |
2972 | continue; | |
2973 | ||
2974 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2975 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2976 | ||
6f94b685 DS |
2977 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
2978 | pi = pi->next) { | |
2bb9eff4 DS |
2979 | /* |
2980 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2981 | * this ES. |
2982 | */ | |
40381db7 DS |
2983 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2984 | && pi->type == ZEBRA_ROUTE_BGP | |
2985 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 2986 | continue; |
2987 | ||
2bb9eff4 DS |
2988 | if (!is_prefix_matching_for_es(evp, es)) |
2989 | continue; | |
50f74cf1 | 2990 | |
2bb9eff4 DS |
2991 | if (install) |
2992 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 2993 | bgp, es, evp, pi); |
2bb9eff4 DS |
2994 | else |
2995 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 2996 | bgp, es, evp, pi); |
2bb9eff4 DS |
2997 | |
2998 | if (ret) { | |
af4c2728 | 2999 | flog_err( |
e50f7cfd | 3000 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
3001 | "Failed to %s EVPN %s route in ESI %s", |
3002 | install ? "install" | |
3003 | : "uninstall", | |
3004 | prefix2str(evp, buf, | |
3005 | sizeof(buf)), | |
3006 | esi_to_str(&es->esi, buf1, | |
3007 | sizeof(buf1))); | |
3008 | return ret; | |
50f74cf1 | 3009 | } |
3010 | } | |
3011 | } | |
3012 | } | |
3013 | return 0; | |
3014 | } | |
3015 | ||
47bf0432 CS |
3016 | /* This API will scan evpn routes for checking attribute's rmac |
3017 | * macthes with bgp instance router mac. It avoid installing | |
3018 | * route into bgp vrf table and remote rmac in bridge table. | |
3019 | */ | |
3020 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
3021 | struct prefix_evpn *evp, | |
3022 | struct bgp_path_info *pi) | |
3023 | { | |
3024 | /* evpn route could have learnt prior to L3vni has come up, | |
3025 | * perform rmac check before installing route and | |
3026 | * remote router mac. | |
3027 | * The route will be removed from global bgp table once | |
3028 | * SVI comes up with MAC and stored in hash, triggers | |
3029 | * bgp_mac_rescan_all_evpn_tables. | |
3030 | */ | |
05864da7 | 3031 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
3032 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
3033 | char buf1[PREFIX_STRLEN]; | |
3034 | char attr_str[BUFSIZ] = {0}; | |
3035 | ||
3036 | bgp_dump_attr(pi->attr, attr_str, BUFSIZ); | |
3037 | ||
3038 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
3039 | __func__, bgp_vrf->vrf_id, | |
3040 | prefix2str(evp, buf1, sizeof(buf1)), | |
3041 | attr_str); | |
3042 | } | |
3043 | ||
3044 | return 1; | |
3045 | } | |
3046 | ||
3047 | return 0; | |
3048 | } | |
3049 | ||
5ba238b7 MK |
3050 | /* |
3051 | * Install or uninstall mac-ip routes are appropriate for this | |
3052 | * particular VRF. | |
3053 | */ | |
996c9314 | 3054 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3055 | { |
3056 | afi_t afi; | |
3057 | safi_t safi; | |
3058 | struct bgp_node *rd_rn, *rn; | |
3059 | struct bgp_table *table; | |
40381db7 | 3060 | struct bgp_path_info *pi; |
5ba238b7 MK |
3061 | int ret; |
3062 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 3063 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3064 | |
3065 | afi = AFI_L2VPN; | |
3066 | safi = SAFI_EVPN; | |
5e53dce3 T |
3067 | bgp_evpn = bgp_get_evpn(); |
3068 | if (!bgp_evpn) | |
5ba238b7 MK |
3069 | return -1; |
3070 | ||
3071 | /* Walk entire global routing table and evaluate routes which could be | |
3072 | * imported into this VRF. Note that we need to loop through all global | |
3073 | * routes to determine which route matches the import rt on vrf | |
3074 | */ | |
5e53dce3 | 3075 | for (rd_rn = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_rn; |
5ba238b7 | 3076 | rd_rn = bgp_route_next(rd_rn)) { |
67009e22 | 3077 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
3078 | if (!table) |
3079 | continue; | |
3080 | ||
3081 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3082 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3083 | ||
1eb88002 | 3084 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3085 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3086 | || evp->prefix.route_type | |
3087 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3088 | continue; |
3089 | ||
1eb88002 | 3090 | /* if not a mac+ip route skip this route */ |
3714a385 | 3091 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3092 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3093 | continue; |
3094 | ||
6f94b685 DS |
3095 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3096 | pi = pi->next) { | |
5ba238b7 | 3097 | /* Consider "valid" remote routes applicable for |
523cafc4 | 3098 | * this VRF. |
3099 | */ | |
40381db7 DS |
3100 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3101 | && pi->type == ZEBRA_ROUTE_BGP | |
3102 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3103 | continue; |
3104 | ||
40381db7 | 3105 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
3106 | if (bgp_evpn_route_rmac_self_check( |
3107 | bgp_vrf, evp, pi)) | |
3108 | continue; | |
3109 | ||
5ba238b7 | 3110 | if (install) |
996c9314 | 3111 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3112 | bgp_vrf, evp, pi); |
5ba238b7 | 3113 | else |
996c9314 | 3114 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3115 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3116 | |
3117 | if (ret) { | |
af4c2728 | 3118 | flog_err( |
e50f7cfd | 3119 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3120 | "Failed to %s EVPN %s route in VRF %s", |
3121 | install ? "install" | |
3122 | : "uninstall", | |
3123 | prefix2str(evp, buf, | |
3124 | sizeof(buf)), | |
996c9314 LB |
3125 | vrf_id_to_name( |
3126 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3127 | return ret; |
3128 | } | |
3129 | } | |
3130 | } | |
3131 | } | |
3132 | } | |
3133 | ||
3134 | return 0; | |
3135 | } | |
3136 | ||
128ea8ab | 3137 | /* |
3138 | * Install or uninstall routes of specified type that are appropriate for this | |
3139 | * particular VNI. | |
3140 | */ | |
d62a17ae | 3141 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3142 | struct bgpevpn *vpn, | |
3143 | bgp_evpn_route_type rtype, | |
3144 | int install) | |
3145 | { | |
0291c246 MK |
3146 | afi_t afi; |
3147 | safi_t safi; | |
3148 | struct bgp_node *rd_rn, *rn; | |
3149 | struct bgp_table *table; | |
40381db7 | 3150 | struct bgp_path_info *pi; |
0291c246 | 3151 | int ret; |
d62a17ae | 3152 | |
3153 | afi = AFI_L2VPN; | |
3154 | safi = SAFI_EVPN; | |
3155 | ||
3156 | /* Walk entire global routing table and evaluate routes which could be | |
3157 | * imported into this VPN. Note that we cannot just look at the routes | |
3158 | * for | |
3159 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3160 | * RD. | |
3161 | */ | |
3162 | /* EVPN routes are a 2-level table. */ | |
3163 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3164 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3165 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3166 | if (!table) |
3167 | continue; | |
3168 | ||
3169 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3170 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3171 | ||
3172 | if (evp->prefix.route_type != rtype) | |
3173 | continue; | |
3174 | ||
6f94b685 DS |
3175 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3176 | pi = pi->next) { | |
d62a17ae | 3177 | /* Consider "valid" remote routes applicable for |
3178 | * this VNI. */ | |
40381db7 DS |
3179 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3180 | && pi->type == ZEBRA_ROUTE_BGP | |
3181 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3182 | continue; |
3183 | ||
40381db7 | 3184 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3185 | if (install) |
3186 | ret = install_evpn_route_entry( | |
40381db7 | 3187 | bgp, vpn, evp, pi); |
d62a17ae | 3188 | else |
3189 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3190 | bgp, vpn, evp, pi); |
d62a17ae | 3191 | |
3192 | if (ret) { | |
af4c2728 | 3193 | flog_err( |
e50f7cfd | 3194 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3195 | "%u: Failed to %s EVPN %s route in VNI %u", |
3196 | bgp->vrf_id, | |
3197 | install ? "install" | |
3198 | : "uninstall", | |
3199 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3200 | ? "MACIP" | |
3201 | : "IMET", | |
3202 | vpn->vni); | |
3203 | return ret; | |
3204 | } | |
3205 | } | |
3206 | } | |
3207 | } | |
3208 | } | |
3209 | ||
3210 | return 0; | |
128ea8ab | 3211 | } |
3212 | ||
50f74cf1 | 3213 | /* Install any existing remote ES routes applicable for this ES into its routing |
3214 | * table. This is invoked when ES comes up. | |
3215 | */ | |
3216 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3217 | { | |
3218 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3219 | } | |
3220 | ||
3221 | ||
5ba238b7 | 3222 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3223 | * is invoked upon l3vni-add or l3vni import rt change |
3224 | */ | |
5ba238b7 MK |
3225 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3226 | { | |
3227 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3228 | return 0; | |
3229 | } | |
3230 | ||
128ea8ab | 3231 | /* |
3232 | * Install any existing remote routes applicable for this VNI into its | |
3233 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3234 | * RT is changed. | |
3235 | */ | |
d62a17ae | 3236 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3237 | { |
d62a17ae | 3238 | int ret; |
128ea8ab | 3239 | |
d62a17ae | 3240 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3241 | * for this VNI. | |
3242 | */ | |
3243 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3244 | 1); | |
3245 | if (ret) | |
3246 | return ret; | |
128ea8ab | 3247 | |
d62a17ae | 3248 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3249 | 1); | |
128ea8ab | 3250 | } |
3251 | ||
5ba238b7 MK |
3252 | /* uninstall routes from l3vni vrf. */ |
3253 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3254 | { | |
3255 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3256 | return 0; | |
3257 | } | |
3258 | ||
90e60aa7 | 3259 | /* |
3260 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3261 | * this is invoked is upon an import RT change. | |
3262 | */ | |
d62a17ae | 3263 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3264 | { |
d62a17ae | 3265 | int ret; |
90e60aa7 | 3266 | |
d62a17ae | 3267 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3268 | * applicable | |
3269 | * for this VNI. | |
3270 | */ | |
3271 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3272 | 0); | |
3273 | if (ret) | |
3274 | return ret; | |
90e60aa7 | 3275 | |
d62a17ae | 3276 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3277 | 0); | |
90e60aa7 | 3278 | } |
3279 | ||
50f74cf1 | 3280 | /* Install or unistall route in ES */ |
3281 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3282 | afi_t afi, safi_t safi, | |
3283 | struct prefix_evpn *evp, | |
40381db7 | 3284 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3285 | { |
3286 | int ret = 0; | |
3287 | char buf[ESI_STR_LEN]; | |
3288 | ||
3289 | if (install) | |
40381db7 | 3290 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3291 | else |
40381db7 | 3292 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3293 | |
3294 | if (ret) { | |
af4c2728 | 3295 | flog_err( |
e50f7cfd | 3296 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3297 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3298 | install ? "install" : "uninstall", "ES", | |
3299 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3300 | return ret; |
3301 | } | |
3302 | return 0; | |
3303 | } | |
3304 | ||
d3135ba3 | 3305 | /* |
3306 | * Install or uninstall route in matching VRFs (list). | |
3307 | */ | |
3308 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3309 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3310 | struct bgp_path_info *pi, |
d3135ba3 | 3311 | struct list *vrfs, int install) |
3312 | { | |
3313 | char buf[PREFIX2STR_BUFFER]; | |
3314 | struct bgp *bgp_vrf; | |
3315 | struct listnode *node, *nnode; | |
3316 | ||
90264d64 | 3317 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3318 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3319 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3320 | return 0; |
3321 | ||
90264d64 | 3322 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3323 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3324 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3325 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3326 | return 0; |
3327 | ||
d3135ba3 | 3328 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3329 | int ret; | |
3330 | ||
3331 | if (install) | |
40381db7 | 3332 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3333 | else |
996c9314 | 3334 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3335 | pi); |
d3135ba3 | 3336 | |
3337 | if (ret) { | |
e50f7cfd | 3338 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3339 | "%u: Failed to %s prefix %s in VRF %s", |
3340 | bgp_def->vrf_id, | |
3341 | install ? "install" : "uninstall", | |
3342 | prefix2str(evp, buf, sizeof(buf)), | |
3343 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3344 | return ret; |
3345 | } | |
3346 | } | |
3347 | ||
3348 | return 0; | |
3349 | } | |
3350 | ||
128ea8ab | 3351 | /* |
3352 | * Install or uninstall route in matching VNIs (list). | |
3353 | */ | |
d62a17ae | 3354 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3355 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3356 | struct bgp_path_info *pi, |
d62a17ae | 3357 | struct list *vnis, int install) |
128ea8ab | 3358 | { |
d62a17ae | 3359 | struct bgpevpn *vpn; |
3360 | struct listnode *node, *nnode; | |
128ea8ab | 3361 | |
d62a17ae | 3362 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3363 | int ret; | |
128ea8ab | 3364 | |
d62a17ae | 3365 | if (!is_vni_live(vpn)) |
3366 | continue; | |
128ea8ab | 3367 | |
d62a17ae | 3368 | if (install) |
40381db7 | 3369 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3370 | else |
40381db7 | 3371 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3372 | |
d62a17ae | 3373 | if (ret) { |
1c50c1c0 QY |
3374 | flog_err(EC_BGP_EVPN_FAIL, |
3375 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3376 | bgp->vrf_id, install ? "install" : "uninstall", | |
3377 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3378 | ? "MACIP" | |
3379 | : "IMET", | |
3380 | vpn->vni); | |
d62a17ae | 3381 | return ret; |
3382 | } | |
3383 | } | |
128ea8ab | 3384 | |
d62a17ae | 3385 | return 0; |
128ea8ab | 3386 | } |
3387 | ||
3388 | /* | |
50f74cf1 | 3389 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3390 | */ |
d62a17ae | 3391 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3392 | struct prefix *p, |
40381db7 | 3393 | struct bgp_path_info *pi, int import) |
d62a17ae | 3394 | { |
3395 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3396 | struct attr *attr = pi->attr; |
d62a17ae | 3397 | struct ecommunity *ecom; |
3398 | int i; | |
3399 | ||
3400 | assert(attr); | |
3401 | ||
50f74cf1 | 3402 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3403 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3404 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3405 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3406 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3407 | return 0; |
3408 | ||
3409 | /* If we don't have Route Target, nothing much to do. */ | |
3410 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3411 | return 0; | |
3412 | ||
3413 | ecom = attr->ecommunity; | |
3414 | if (!ecom || !ecom->size) | |
3415 | return -1; | |
3416 | ||
50f74cf1 | 3417 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3418 | * attached to the route */ | |
d62a17ae | 3419 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3420 | uint8_t *pnt; |
3421 | uint8_t type, sub_type; | |
d62a17ae | 3422 | struct ecommunity_val *eval; |
3423 | struct ecommunity_val eval_tmp; | |
996c9314 | 3424 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3425 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3426 | struct evpnes *es; |
d62a17ae | 3427 | |
3428 | /* Only deal with RTs */ | |
3429 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3430 | eval = (struct ecommunity_val *)(ecom->val | |
3431 | + (i * ECOMMUNITY_SIZE)); | |
3432 | type = *pnt++; | |
3433 | sub_type = *pnt++; | |
3434 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3435 | continue; | |
3436 | ||
50f74cf1 | 3437 | /* |
3438 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3439 | * IMET route is imported into VNI table. | |
3440 | * prefix routes are imported into VRF table. | |
523cafc4 | 3441 | */ |
50f74cf1 | 3442 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3443 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3444 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3445 | |
50f74cf1 | 3446 | irt = lookup_import_rt(bgp, eval); |
3447 | if (irt) | |
40381db7 DS |
3448 | install_uninstall_route_in_vnis( |
3449 | bgp, afi, safi, evp, pi, irt->vnis, | |
3450 | import); | |
50f74cf1 | 3451 | |
3452 | vrf_irt = lookup_vrf_import_rt(eval); | |
3453 | if (vrf_irt) | |
40381db7 DS |
3454 | install_uninstall_route_in_vrfs( |
3455 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3456 | import); | |
50f74cf1 | 3457 | |
3458 | /* Also check for non-exact match. | |
3459 | * In this, we mask out the AS and | |
3460 | * only check on the local-admin sub-field. | |
3461 | * This is to facilitate using | |
3462 | * VNI as the RT for EBGP peering too. | |
3463 | */ | |
3464 | irt = NULL; | |
3465 | vrf_irt = NULL; | |
3466 | if (type == ECOMMUNITY_ENCODE_AS | |
3467 | || type == ECOMMUNITY_ENCODE_AS4 | |
3468 | || type == ECOMMUNITY_ENCODE_IP) { | |
3469 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3470 | mask_ecom_global_admin(&eval_tmp, eval); | |
3471 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3472 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3473 | } | |
3474 | ||
3475 | if (irt) | |
40381db7 DS |
3476 | install_uninstall_route_in_vnis( |
3477 | bgp, afi, safi, evp, pi, irt->vnis, | |
3478 | import); | |
50f74cf1 | 3479 | if (vrf_irt) |
40381db7 DS |
3480 | install_uninstall_route_in_vrfs( |
3481 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3482 | import); | |
50f74cf1 | 3483 | } |
3484 | ||
3485 | /* es route is imported into the es table */ | |
3486 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3487 | ||
3488 | /* we will match based on the entire esi to avoid | |
3489 | * imoort of an es route for esi2 into esi1 | |
3490 | */ | |
3491 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3492 | if (es && is_es_local(es)) | |
40381db7 DS |
3493 | install_uninstall_route_in_es( |
3494 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3495 | } |
d62a17ae | 3496 | } |
3497 | ||
3498 | return 0; | |
128ea8ab | 3499 | } |
3500 | ||
2bb9eff4 DS |
3501 | /* |
3502 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3503 | * routes | |
3504 | */ | |
80b140af MK |
3505 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3506 | { | |
5fd9c12b KA |
3507 | /* Delete ipv4 default route and withdraw from peers */ |
3508 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3509 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3510 | SAFI_UNICAST, false); | |
3511 | ||
80b140af | 3512 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3513 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3514 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3515 | |
5fd9c12b KA |
3516 | /* Delete ipv6 default route and withdraw from peers */ |
3517 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3518 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3519 | SAFI_UNICAST, false); | |
3520 | ||
80b140af | 3521 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3522 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3523 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3524 | } |
3525 | ||
2bb9eff4 DS |
3526 | /* |
3527 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3528 | * routes | |
3529 | */ | |
80b140af MK |
3530 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3531 | { | |
3532 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3533 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3534 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3535 | |
5fd9c12b KA |
3536 | /* update ipv4 default route and withdraw from peers */ |
3537 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3538 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3539 | SAFI_UNICAST, true); | |
3540 | ||
80b140af | 3541 | /* update all ipv6 routes */ |
fdf19f06 MK |
3542 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3543 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3544 | |
3545 | /* update ipv6 default route and withdraw from peers */ | |
3546 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3547 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3548 | SAFI_UNICAST, true); | |
3549 | ||
80b140af MK |
3550 | } |
3551 | ||
676f83b9 | 3552 | /* |
3553 | * update and advertise local routes for a VRF as type-5 routes. | |
3554 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3555 | * done in the global route table using the routes which already exist in the | |
3556 | * VRF routing table | |
3557 | */ | |
80b140af | 3558 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3559 | { |
80b140af MK |
3560 | /* skip if the RD is configured */ |
3561 | if (is_vrf_rd_configured(bgp_vrf)) | |
3562 | return; | |
3563 | ||
3564 | /* derive the RD for the VRF based on new router-id */ | |
3565 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3566 | ||
3567 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3568 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3569 | } |
3570 | ||
3571 | /* | |
3572 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3573 | * This is invoked upon VRF RD change. The processing is done only from global | |
3574 | * table. | |
3575 | */ | |
80b140af | 3576 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3577 | { |
80b140af MK |
3578 | /* skip if the RD is configured */ |
3579 | if (is_vrf_rd_configured(bgp_vrf)) | |
3580 | return; | |
3581 | ||
3582 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3583 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3584 | } |
3585 | ||
90e60aa7 | 3586 | /* |
3587 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3588 | * change. Note that the processing is done only on the global route table | |
3589 | * using routes that already exist in the per-VNI table. | |
3590 | */ | |
d62a17ae | 3591 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3592 | { | |
3593 | struct prefix_evpn p; | |
3594 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3595 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3596 | struct attr *attr; |
3597 | afi_t afi = AFI_L2VPN; | |
3598 | safi_t safi = SAFI_EVPN; | |
3599 | ||
3600 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3601 | * attributes to create and advertise the type-3 route for this VNI | |
3602 | * in the global table. | |
fd069644 DS |
3603 | * |
3604 | * RT-3 only if doing head-end replication | |
d62a17ae | 3605 | */ |
833b8a50 AK |
3606 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3607 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
3608 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
3609 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3610 | if (!rn) /* unexpected */ | |
3611 | return 0; | |
6f94b685 | 3612 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3613 | if (pi->peer == bgp->peer_self && |
3614 | pi->type == ZEBRA_ROUTE_BGP | |
3615 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3616 | break; | |
3617 | if (!pi) /* unexpected */ | |
3618 | return 0; | |
3619 | attr = pi->attr; | |
d62a17ae | 3620 | |
fd069644 DS |
3621 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3622 | (struct prefix *)&p, &vpn->prd); | |
3623 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3624 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3625 | |
fd069644 DS |
3626 | /* Schedule for processing and unlock node. */ |
3627 | bgp_process(bgp, global_rn, afi, safi); | |
3628 | bgp_unlock_node(global_rn); | |
3629 | } | |
d62a17ae | 3630 | |
3631 | /* Now, walk this VNI's route table and use the route and its attribute | |
3632 | * to create and schedule route in global table. | |
3633 | */ | |
3634 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3635 | rn = bgp_route_next(rn)) { | |
3636 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3637 | ||
3638 | /* Identify MAC-IP local routes. */ | |
3639 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3640 | continue; | |
3641 | ||
6f94b685 | 3642 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3643 | if (pi->peer == bgp->peer_self |
3644 | && pi->type == ZEBRA_ROUTE_BGP | |
3645 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3646 | break; |
40381db7 | 3647 | if (!pi) |
d62a17ae | 3648 | continue; |
3649 | ||
3650 | /* Create route in global routing table using this route entry's | |
3651 | * attribute. | |
3652 | */ | |
40381db7 | 3653 | attr = pi->attr; |
d62a17ae | 3654 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3655 | (struct prefix *)evp, &vpn->prd); | |
3656 | assert(global_rn); | |
3657 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3658 | &global_pi, 0, |
f07e1c99 | 3659 | mac_mobility_seqnum(attr)); |
d62a17ae | 3660 | |
3661 | /* Schedule for processing and unlock node. */ | |
3662 | bgp_process(bgp, global_rn, afi, safi); | |
3663 | bgp_unlock_node(global_rn); | |
3664 | } | |
3665 | ||
3666 | return 0; | |
90e60aa7 | 3667 | } |
3668 | ||
3669 | /* | |
3670 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3671 | * table. Invoked upon router-id change. | |
3672 | */ | |
d62a17ae | 3673 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3674 | { |
d62a17ae | 3675 | int ret; |
3676 | struct prefix_evpn p; | |
3677 | struct bgp_node *global_rn; | |
40381db7 | 3678 | struct bgp_path_info *pi; |
d62a17ae | 3679 | afi_t afi = AFI_L2VPN; |
3680 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3681 | |
d62a17ae | 3682 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3683 | * for this VNI - from the global table. | |
3684 | */ | |
3685 | ret = delete_global_type2_routes(bgp, vpn); | |
3686 | if (ret) | |
3687 | return ret; | |
90e60aa7 | 3688 | |
d62a17ae | 3689 | /* Remove type-3 route for this VNI from global table. */ |
3690 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3691 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3692 | (struct prefix *)&p, &vpn->prd); | |
3693 | if (global_rn) { | |
3694 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3695 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3696 | |
d62a17ae | 3697 | /* Schedule for processing - withdraws to peers happen from |
3698 | * this table. | |
3699 | */ | |
40381db7 | 3700 | if (pi) |
d62a17ae | 3701 | bgp_process(bgp, global_rn, afi, safi); |
3702 | bgp_unlock_node(global_rn); | |
3703 | } | |
90e60aa7 | 3704 | |
d62a17ae | 3705 | return 0; |
90e60aa7 | 3706 | } |
3707 | ||
2d48ee25 | 3708 | /* |
3709 | * Handle router-id change. Update and advertise local routes corresponding | |
3710 | * to this VNI from peers. Note that this is invoked after updating the | |
3711 | * router-id. The routes in the per-VNI table are used to create routes in | |
3712 | * the global table and schedule them. | |
3713 | */ | |
e3b78da8 | 3714 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3715 | { |
e3b78da8 | 3716 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3717 | |
d62a17ae | 3718 | /* Skip VNIs with configured RD. */ |
3719 | if (is_rd_configured(vpn)) | |
3720 | return; | |
2d48ee25 | 3721 | |
d62a17ae | 3722 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3723 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3724 | } |
3725 | ||
3726 | /* | |
3727 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3728 | * to this VNI from peers. Note that this is invoked prior to updating | |
3729 | * the router-id and is done only on the global route table, the routes | |
3730 | * are needed in the per-VNI table to re-advertise with new router id. | |
3731 | */ | |
e3b78da8 | 3732 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3733 | { |
e3b78da8 | 3734 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3735 | |
d62a17ae | 3736 | /* Skip VNIs with configured RD. */ |
3737 | if (is_rd_configured(vpn)) | |
3738 | return; | |
2d48ee25 | 3739 | |
d62a17ae | 3740 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3741 | } |
3742 | ||
fd069644 DS |
3743 | /* |
3744 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3745 | * This is invoked upon flooding mode changing to head-end replication. | |
3746 | */ | |
e3b78da8 | 3747 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3748 | { |
e3b78da8 | 3749 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3750 | struct bgp *bgp = data; |
3751 | struct prefix_evpn p; | |
3752 | ||
833b8a50 AK |
3753 | if (!vpn || !is_vni_live(vpn) || |
3754 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3755 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3756 | return; |
3757 | ||
3758 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3759 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3760 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3761 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3762 | } | |
3763 | ||
3764 | /* | |
3765 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3766 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3767 | */ | |
e3b78da8 | 3768 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3769 | { |
e3b78da8 | 3770 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3771 | struct bgp *bgp = data; |
3772 | struct prefix_evpn p; | |
3773 | ||
3774 | if (!vpn || !is_vni_live(vpn)) | |
3775 | return; | |
3776 | ||
3777 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3778 | delete_evpn_route(bgp, vpn, &p); | |
3779 | } | |
3780 | ||
128ea8ab | 3781 | /* |
3782 | * Process received EVPN type-2 route (advertise or withdraw). | |
3783 | */ | |
d62a17ae | 3784 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3785 | struct attr *attr, uint8_t *pfx, int psize, |
3786 | uint32_t addpath_id) | |
d62a17ae | 3787 | { |
3788 | struct prefix_rd prd; | |
3789 | struct prefix_evpn p; | |
554cd77a | 3790 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3791 | uint8_t ipaddr_len; |
3792 | uint8_t macaddr_len; | |
b57ba6d2 | 3793 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3794 | uint32_t num_labels = 0; |
554cd77a | 3795 | uint32_t eth_tag; |
d62a17ae | 3796 | int ret; |
3797 | ||
3798 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3799 | * additional 3 bytes if there is a second label (VNI): | |
3800 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3801 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3802 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3803 | */ | |
3804 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3805 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3806 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3807 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3808 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3809 | return -1; |
3810 | } | |
3811 | ||
554cd77a VB |
3812 | memset(&evpn, 0, sizeof(evpn)); |
3813 | ||
d62a17ae | 3814 | /* Make prefix_rd */ |
3815 | prd.family = AF_UNSPEC; | |
3816 | prd.prefixlen = 64; | |
3817 | memcpy(&prd.val, pfx, 8); | |
3818 | pfx += 8; | |
3819 | ||
3820 | /* Make EVPN prefix. */ | |
3821 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3822 | p.family = AF_EVPN; |
50f74cf1 | 3823 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3824 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3825 | ||
554cd77a VB |
3826 | /* Copy Ethernet Seg Identifier */ |
3827 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3828 | pfx += ESI_LEN; | |
d62a17ae | 3829 | |
554cd77a VB |
3830 | /* Copy Ethernet Tag */ |
3831 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3832 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3833 | pfx += 4; |
3834 | ||
3835 | /* Get the MAC Addr len */ | |
3836 | macaddr_len = *pfx++; | |
3837 | ||
3838 | /* Get the MAC Addr */ | |
28328ea9 | 3839 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3840 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3841 | pfx += ETH_ALEN; |
d62a17ae | 3842 | } else { |
af4c2728 | 3843 | flog_err( |
e50f7cfd | 3844 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3845 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3846 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3847 | return -1; | |
3848 | } | |
3849 | ||
3850 | ||
3851 | /* Get the IP. */ | |
3852 | ipaddr_len = *pfx++; | |
3853 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3854 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3855 | flog_err( |
e50f7cfd | 3856 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3857 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3858 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3859 | return -1; | |
3860 | } | |
3861 | ||
3862 | if (ipaddr_len) { | |
3863 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3864 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3865 | ? IPADDR_V4 |
3866 | : IPADDR_V6; | |
3714a385 | 3867 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3868 | } |
3869 | pfx += ipaddr_len; | |
3870 | ||
b57ba6d2 MK |
3871 | /* Get the VNI(s). Stored as bytes here. */ |
3872 | num_labels++; | |
3873 | memset(label, 0, sizeof(label)); | |
3874 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3875 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3876 | psize -= (33 + ipaddr_len); |
3877 | /* Do we have a second VNI? */ | |
3878 | if (psize) { | |
3879 | num_labels++; | |
3880 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3881 | /* |
3882 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3883 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3884 | * the next field | |
6b11bd8d | 3885 | */ |
b57ba6d2 | 3886 | } |
d62a17ae | 3887 | |
3888 | /* Process the route. */ | |
3889 | if (attr) | |
3890 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3891 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3892 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3893 | else |
3894 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3895 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3896 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3897 | return ret; |
128ea8ab | 3898 | } |
3899 | ||
3900 | /* | |
3901 | * Process received EVPN type-3 route (advertise or withdraw). | |
3902 | */ | |
d62a17ae | 3903 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3904 | struct attr *attr, uint8_t *pfx, int psize, |
3905 | uint32_t addpath_id) | |
d62a17ae | 3906 | { |
3907 | struct prefix_rd prd; | |
3908 | struct prefix_evpn p; | |
d7c0a89a | 3909 | uint8_t ipaddr_len; |
554cd77a | 3910 | uint32_t eth_tag; |
d62a17ae | 3911 | int ret; |
3912 | ||
3913 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3914 | * IP len (1) and IP (4 or 16). | |
3915 | */ | |
3916 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3917 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3918 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3919 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3920 | return -1; |
3921 | } | |
3922 | ||
7fd077aa | 3923 | /* If PMSI is present, log if it is anything other than IR. |
3924 | * Note: We just simply ignore the values as it is not clear if | |
3925 | * doing anything else is better. | |
3926 | */ | |
3927 | if (attr && | |
3928 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
3929 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
3930 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3931 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
3932 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3933 | peer->bgp->vrf_id, peer->host, | |
3934 | attr->pmsi_tnl_type); | |
7fd077aa | 3935 | } |
3936 | } | |
3937 | ||
d62a17ae | 3938 | /* Make prefix_rd */ |
3939 | prd.family = AF_UNSPEC; | |
3940 | prd.prefixlen = 64; | |
3941 | memcpy(&prd.val, pfx, 8); | |
3942 | pfx += 8; | |
3943 | ||
3944 | /* Make EVPN prefix. */ | |
3945 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3946 | p.family = AF_EVPN; |
50f74cf1 | 3947 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3948 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3949 | ||
554cd77a VB |
3950 | /* Copy Ethernet Tag */ |
3951 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3952 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3953 | pfx += 4; |
3954 | ||
3955 | /* Get the IP. */ | |
3956 | ipaddr_len = *pfx++; | |
3957 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3958 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3959 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3960 | } else { |
af4c2728 | 3961 | flog_err( |
e50f7cfd | 3962 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3963 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3964 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3965 | return -1; | |
3966 | } | |
3967 | ||
3968 | /* Process the route. */ | |
3969 | if (attr) | |
3970 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3971 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3972 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3973 | else |
3974 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3975 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3976 | &prd, NULL, 0, NULL); |
d62a17ae | 3977 | return ret; |
128ea8ab | 3978 | } |
3979 | ||
50f74cf1 | 3980 | /* |
3981 | * Process received EVPN type-4 route (advertise or withdraw). | |
3982 | */ | |
3983 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3984 | struct attr *attr, uint8_t *pfx, int psize, | |
3985 | uint32_t addpath_id) | |
3986 | { | |
3987 | int ret; | |
3988 | esi_t esi; | |
3989 | uint8_t ipaddr_len; | |
3990 | struct in_addr vtep_ip; | |
3991 | struct prefix_rd prd; | |
3992 | struct prefix_evpn p; | |
3993 | ||
3994 | /* Type-4 route should be either 23 or 35 bytes | |
3995 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3996 | */ | |
3997 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 3998 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3999 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
4000 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 4001 | return -1; |
4002 | } | |
4003 | ||
4004 | /* Make prefix_rd */ | |
4005 | prd.family = AF_UNSPEC; | |
4006 | prd.prefixlen = 64; | |
4007 | memcpy(&prd.val, pfx, 8); | |
4008 | pfx += 8; | |
4009 | ||
4010 | /* get the ESI */ | |
4011 | memcpy(&esi, pfx, ESI_BYTES); | |
4012 | pfx += ESI_BYTES; | |
4013 | ||
4014 | ||
4015 | /* Get the IP. */ | |
4016 | ipaddr_len = *pfx++; | |
4017 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
4018 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
4019 | } else { | |
af4c2728 | 4020 | flog_err( |
e50f7cfd | 4021 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 4022 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
4023 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4024 | return -1; | |
4025 | } | |
4026 | ||
4027 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
4028 | /* Process the route. */ | |
4029 | if (attr) { | |
4030 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4031 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4032 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 4033 | } else { |
50f74cf1 | 4034 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4035 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4036 | &prd, NULL, 0, NULL); | |
4037 | } | |
4038 | return ret; | |
4039 | } | |
4040 | ||
4041 | ||
128ea8ab | 4042 | /* |
4043 | * Process received EVPN type-5 route (advertise or withdraw). | |
4044 | */ | |
d62a17ae | 4045 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4046 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4047 | uint32_t addpath_id) |
d62a17ae | 4048 | { |
4049 | struct prefix_rd prd; | |
4050 | struct prefix_evpn p; | |
4051 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4052 | uint8_t ippfx_len; |
4053 | uint32_t eth_tag; | |
b57ba6d2 | 4054 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4055 | int ret; |
4056 | ||
4057 | /* Type-5 route should be 34 or 58 bytes: | |
4058 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4059 | * GW (4 or 16) and VNI (3). | |
4060 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4061 | */ | |
4062 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4063 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4064 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4065 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4066 | return -1; |
4067 | } | |
4068 | ||
4069 | /* Make prefix_rd */ | |
4070 | prd.family = AF_UNSPEC; | |
4071 | prd.prefixlen = 64; | |
4072 | memcpy(&prd.val, pfx, 8); | |
4073 | pfx += 8; | |
4074 | ||
4075 | /* Make EVPN prefix. */ | |
4076 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4077 | p.family = AF_EVPN; |
50f74cf1 | 4078 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4079 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4080 | ||
4081 | /* Additional information outside of prefix - ESI and GW IP */ | |
4082 | memset(&evpn, 0, sizeof(evpn)); | |
4083 | ||
4084 | /* Fetch ESI */ | |
4085 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
4086 | pfx += 10; | |
4087 | ||
4088 | /* Fetch Ethernet Tag. */ | |
4089 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4090 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4091 | pfx += 4; |
4092 | ||
4093 | /* Fetch IP prefix length. */ | |
4094 | ippfx_len = *pfx++; | |
4095 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4096 | flog_err( |
e50f7cfd | 4097 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4098 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4099 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4100 | return -1; | |
4101 | } | |
3714a385 | 4102 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4103 | |
4104 | /* Determine IPv4 or IPv6 prefix */ | |
4105 | /* Since the address and GW are from the same family, this just becomes | |
4106 | * a simple check on the total size. | |
4107 | */ | |
4108 | if (psize == 34) { | |
3714a385 | 4109 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4110 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4111 | pfx += 4; |
4112 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4113 | pfx += 4; | |
d62a17ae | 4114 | } else { |
3714a385 | 4115 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4116 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4117 | pfx += 16; |
4118 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4119 | pfx += 16; | |
d62a17ae | 4120 | } |
4121 | ||
b57ba6d2 MK |
4122 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4123 | memset(&label, 0, sizeof(label)); | |
4124 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4125 | |
4126 | /* | |
4127 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4128 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4129 | * field | |
6b11bd8d | 4130 | */ |
d62a17ae | 4131 | |
4132 | /* Process the route. */ | |
f007bdce | 4133 | if (attr) |
d62a17ae | 4134 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4135 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4136 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4137 | else |
4138 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4139 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4140 | &prd, &label, 1, &evpn); |
d62a17ae | 4141 | |
4142 | return ret; | |
4143 | } | |
4144 | ||
4145 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 4146 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 4147 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 4148 | { |
4149 | int len; | |
4150 | char temp[16]; | |
4151 | struct evpn_addr *p_evpn_p; | |
4152 | ||
4153 | memset(&temp, 0, 16); | |
b03b8898 | 4154 | if (p->family != AF_EVPN) |
d62a17ae | 4155 | return; |
4156 | p_evpn_p = &(p->u.prefix_evpn); | |
4157 | ||
e9fc2840 | 4158 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4159 | IP and GW-IP have to be both ipv4 or ipv6 |
4160 | */ | |
3714a385 | 4161 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4162 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4163 | else |
e9fc2840 | 4164 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4165 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4166 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4167 | stream_put(s, prd->val, 8); | |
0af35d90 | 4168 | if (attr) |
d62a17ae | 4169 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4170 | else | |
4171 | stream_put(s, &temp, 10); | |
3714a385 | 4172 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4173 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4174 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4175 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4176 | else |
3714a385 | 4177 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4178 | if (attr) { |
3714a385 | 4179 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4180 | stream_put_ipv4(s, |
4181 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4182 | else | |
4183 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4184 | } else { | |
3714a385 | 4185 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4186 | stream_put_ipv4(s, 0); |
4187 | else | |
4188 | stream_put(s, &temp, 16); | |
4189 | } | |
4190 | ||
b57ba6d2 | 4191 | if (num_labels) |
d62a17ae | 4192 | stream_put(s, label, 3); |
4193 | else | |
4194 | stream_put3(s, 0); | |
128ea8ab | 4195 | } |
4196 | ||
4197 | /* | |
4198 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4199 | */ | |
e3b78da8 | 4200 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4201 | { |
e3b78da8 | 4202 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4203 | |
d62a17ae | 4204 | /* Remove EVPN routes and schedule for processing. */ |
4205 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4206 | |
d62a17ae | 4207 | /* Clear "live" flag and see if hash needs to be freed. */ |
4208 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4209 | if (!is_vni_configured(vpn)) | |
4210 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4211 | } |
4212 | ||
4213 | /* | |
4214 | * Free a VNI entry; iterator function called during cleanup. | |
4215 | */ | |
e3b78da8 | 4216 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4217 | { |
e3b78da8 | 4218 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4219 | |
d62a17ae | 4220 | delete_all_vni_routes(bgp, vpn); |
4221 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4222 | } |
4223 | ||
c581d8b0 MK |
4224 | /* |
4225 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4226 | */ | |
4227 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4228 | { | |
5e53dce3 | 4229 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4230 | |
c581d8b0 | 4231 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4232 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4233 | ||
4234 | /* Map RT to VRF */ | |
5e53dce3 T |
4235 | bgp_evpn = bgp_get_evpn(); |
4236 | if (!bgp_evpn) | |
10ebe1ab MK |
4237 | return; |
4238 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4239 | } |
4240 | ||
4241 | /* | |
4242 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4243 | */ | |
4244 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4245 | { | |
4246 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4247 | } | |
4248 | ||
4249 | /* | |
4250 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4251 | */ | |
4252 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4253 | { | |
4254 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4255 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4256 | } | |
4257 | ||
4258 | /* | |
4259 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4260 | */ | |
4261 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4262 | { | |
4263 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4264 | } | |
128ea8ab | 4265 | |
f1f8b53c MK |
4266 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4267 | { | |
5e53dce3 | 4268 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4269 | struct listnode *node = NULL; |
4270 | struct bgpevpn *vpn = NULL; | |
4271 | ||
5e53dce3 T |
4272 | bgp_evpn = bgp_get_evpn(); |
4273 | if (!bgp_evpn) | |
f1f8b53c MK |
4274 | return; |
4275 | ||
4992b4ae MK |
4276 | /* update all type-5 routes */ |
4277 | update_advertise_vrf_routes(bgp_vrf); | |
4278 | ||
4279 | /* update all type-2 routes */ | |
f1f8b53c | 4280 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4281 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4282 | } |
4283 | ||
bf1061d8 VB |
4284 | /* |
4285 | * Handle autort change for a given VNI. | |
4286 | */ | |
e3b78da8 | 4287 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4288 | { |
e3b78da8 | 4289 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4290 | |
bf1061d8 VB |
4291 | if (!is_import_rt_configured(vpn)) { |
4292 | if (is_vni_live(vpn)) | |
4293 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4294 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4295 | list_delete_all_node(vpn->import_rtl); |
4296 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4297 | if (is_vni_live(vpn)) | |
4298 | bgp_evpn_install_routes(bgp, vpn); | |
4299 | } | |
4300 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4301 | list_delete_all_node(vpn->export_rtl); |
4302 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4303 | if (is_vni_live(vpn)) | |
4304 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4305 | } | |
4306 | } | |
4307 | ||
128ea8ab | 4308 | /* |
4309 | * Public functions. | |
4310 | */ | |
4311 | ||
5424b7ba | 4312 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4313 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4314 | afi_t afi, safi_t safi) |
4315 | { | |
4316 | int ret = 0; | |
4317 | struct prefix_evpn evp; | |
4318 | char buf[PREFIX_STRLEN]; | |
4319 | ||
31310b25 | 4320 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4321 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4322 | if (ret) { | |
af4c2728 | 4323 | flog_err( |
e50f7cfd | 4324 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4325 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4326 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4327 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4328 | } |
4329 | } | |
4330 | ||
342dd0c6 | 4331 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4332 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4333 | { |
4334 | struct bgp_table *table = NULL; | |
4335 | struct bgp_node *rn = NULL; | |
40381db7 | 4336 | struct bgp_path_info *pi; |
342dd0c6 | 4337 | |
053905d2 | 4338 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4339 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
f106e3a7 | 4340 | /* Only care about "selected" routes. Also ensure that |
4341 | * these are routes that are injectable into EVPN. | |
4342 | */ | |
25f2ca53 | 4343 | /* TODO: Support for AddPath for EVPN. */ |
6f94b685 | 4344 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4345 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4346 | && is_route_injectable_into_evpn(pi)) { |
25f2ca53 | 4347 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4348 | afi, safi); | |
4349 | break; | |
4350 | } | |
4351 | } | |
4352 | } | |
5424b7ba | 4353 | } |
342dd0c6 | 4354 | |
5fd9c12b KA |
4355 | /* |
4356 | * evpn - enable advertisement of default g/w | |
4357 | */ | |
4358 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4359 | safi_t safi, bool add) | |
4360 | { | |
4361 | struct prefix ip_prefix; | |
4362 | ||
4363 | /* form the default prefix 0.0.0.0/0 */ | |
4364 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4365 | ip_prefix.family = afi2family(afi); | |
4366 | ||
4367 | if (add) { | |
4368 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4369 | NULL, afi, safi); | |
4370 | } else { | |
4371 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4372 | afi, safi); | |
4373 | } | |
4374 | } | |
4375 | ||
4376 | ||
2f69f6d3 | 4377 | /* |
4378 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4379 | * to this function correspond to those of the source IP prefix (best | |
4380 | * path in the case of the attr. In the case of a local prefix (when we | |
4381 | * are advertising local subnets), the src_attr will be NULL. | |
4382 | */ | |
31310b25 | 4383 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4384 | struct attr *src_attr, afi_t afi, |
4385 | safi_t safi) | |
5424b7ba MK |
4386 | { |
4387 | int ret = 0; | |
4388 | struct prefix_evpn evp; | |
4389 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4390 | |
31310b25 | 4391 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4392 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4393 | if (ret) | |
e50f7cfd | 4394 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4395 | "%u: Failed to create type-5 route for prefix %s", |
4396 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4397 | } |
4398 | ||
2f69f6d3 | 4399 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4400 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4401 | * advertisement is enabled. | |
4402 | */ | |
996c9314 LB |
4403 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4404 | safi_t safi) | |
342dd0c6 | 4405 | { |
4406 | struct bgp_table *table = NULL; | |
4407 | struct bgp_node *rn = NULL; | |
40381db7 | 4408 | struct bgp_path_info *pi; |
342dd0c6 | 4409 | |
053905d2 | 4410 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4411 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4412 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4413 | * attribute. Also, ensure that the route is injectable |
4414 | * into EVPN. | |
2f69f6d3 | 4415 | * TODO: Support for AddPath for EVPN. |
4416 | */ | |
6f94b685 | 4417 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4418 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4419 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4420 | |
4421 | /* apply the route-map */ | |
4422 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4423 | route_map_result_t ret; |
53c84f78 | 4424 | |
996c9314 LB |
4425 | ret = route_map_apply( |
4426 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4427 | .map, | |
40381db7 | 4428 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4429 | if (ret == RMAP_DENYMATCH) |
4430 | continue; | |
4431 | } | |
996c9314 | 4432 | bgp_evpn_advertise_type5_route( |
40381db7 | 4433 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4434 | break; |
4435 | } | |
4436 | } | |
31310b25 | 4437 | } |
342dd0c6 | 4438 | } |
4439 | ||
996c9314 | 4440 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4441 | { |
4442 | struct listnode *node, *nnode, *node_to_del; | |
4443 | struct ecommunity *ecom, *ecom_auto; | |
4444 | struct ecommunity_val eval; | |
4445 | ||
bf1061d8 VB |
4446 | if (bgp->advertise_autort_rfc8365) |
4447 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4448 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4449 | ||
4450 | ecom_auto = ecommunity_new(); | |
4451 | ecommunity_add_val(ecom_auto, &eval); | |
4452 | node_to_del = NULL; | |
4453 | ||
4454 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4455 | if (ecommunity_match(ecom, ecom_auto)) { | |
4456 | ecommunity_free(&ecom); | |
4457 | node_to_del = node; | |
4458 | } | |
4459 | } | |
4460 | ||
4461 | if (node_to_del) | |
4462 | list_delete_node(rtl, node_to_del); | |
4463 | ||
4464 | ecommunity_free(&ecom_auto); | |
4465 | } | |
4466 | ||
4467 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4468 | struct ecommunity *ecomadd) |
c581d8b0 | 4469 | { |
5ba238b7 | 4470 | /* uninstall routes from vrf */ |
3d0b43d7 | 4471 | if (is_l3vni_live(bgp_vrf)) |
4472 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4473 | |
4474 | /* Cleanup the RT to VRF mapping */ | |
4475 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4476 | ||
c581d8b0 MK |
4477 | /* Remove auto generated RT */ |
4478 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4479 | ||
4480 | /* Add the newly configured RT to RT list */ | |
4481 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4482 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4483 | ||
3d0b43d7 | 4484 | /* map VRF to its RTs and install routes matching the new RTs */ |
4485 | if (is_l3vni_live(bgp_vrf)) { | |
4486 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4487 | install_routes_for_vrf(bgp_vrf); | |
4488 | } | |
c581d8b0 MK |
4489 | } |
4490 | ||
4491 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4492 | struct ecommunity *ecomdel) | |
4493 | { | |
4494 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4495 | struct ecommunity *ecom = NULL; | |
4496 | ||
5ba238b7 | 4497 | /* uninstall routes from vrf */ |
3d0b43d7 | 4498 | if (is_l3vni_live(bgp_vrf)) |
4499 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4500 | |
4501 | /* Cleanup the RT to VRF mapping */ | |
4502 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4503 | ||
c581d8b0 MK |
4504 | /* remove the RT from the RT list */ |
4505 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4506 | if (ecommunity_match(ecom, ecomdel)) { | |
4507 | ecommunity_free(&ecom); | |
4508 | node_to_del = node; | |
4509 | break; | |
4510 | } | |
4511 | } | |
4512 | ||
4513 | if (node_to_del) | |
4514 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4515 | ||
b3a4db3d | 4516 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4517 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4518 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4519 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4520 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4521 | } | |
4522 | ||
3d0b43d7 | 4523 | /* map VRFs to its RTs and install routes matching this new RT */ |
4524 | if (is_l3vni_live(bgp_vrf)) { | |
4525 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4526 | install_routes_for_vrf(bgp_vrf); | |
4527 | } | |
c581d8b0 MK |
4528 | } |
4529 | ||
4530 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4531 | struct ecommunity *ecomadd) | |
4532 | { | |
4533 | /* remove auto-generated RT */ | |
4534 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4535 | ||
4536 | /* Add the new RT to the RT list */ | |
4537 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4538 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4539 | ||
f1f8b53c | 4540 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4541 | } |
4542 | ||
4543 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4544 | struct ecommunity *ecomdel) | |
4545 | { | |
4546 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4547 | struct ecommunity *ecom = NULL; | |
4548 | ||
4549 | /* Remove the RT from the RT list */ | |
4550 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4551 | if (ecommunity_match(ecom, ecomdel)) { | |
4552 | ecommunity_free(&ecom); | |
4553 | node_to_del = node; | |
4554 | break; | |
4555 | } | |
4556 | } | |
4557 | ||
4558 | if (node_to_del) | |
4559 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4560 | ||
1525e99f DS |
4561 | /* |
4562 | * Temporary assert to make SA happy. | |
4563 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4564 | * which means that SA is going to complain about | |
4565 | * the list_isempty call, which doesn't NULL check. | |
4566 | * So until we get this situation cleaned up, here | |
4567 | * we are. | |
4568 | */ | |
4569 | assert(bgp_vrf->vrf_export_rtl); | |
4570 | ||
c581d8b0 | 4571 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4572 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4573 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4574 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4575 | } | |
4576 | ||
f1f8b53c | 4577 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4578 | } |
4579 | ||
2d48ee25 | 4580 | /* |
4581 | * Handle change to BGP router id. This is invoked twice by the change | |
4582 | * handler, first before the router id has been changed and then after | |
4583 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4584 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4585 | * will result in the routes being re-advertised. |
4586 | */ | |
d62a17ae | 4587 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4588 | { |
676f83b9 | 4589 | if (withdraw) { |
4590 | ||
4591 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4592 | stored in the global table for this vrf |
4593 | */ | |
80b140af | 4594 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4595 | |
4596 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4597 | * L2-VNIs |
4598 | */ | |
d62a17ae | 4599 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4600 | (void (*)(struct hash_bucket *, |
d62a17ae | 4601 | void *))withdraw_router_id_vni, |
4602 | bgp); | |
676f83b9 | 4603 | } else { |
4604 | ||
4605 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4606 | * RD |
4607 | */ | |
80b140af | 4608 | update_router_id_vrf(bgp); |
676f83b9 | 4609 | |
4610 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4611 | * new RD |
4612 | */ | |
d62a17ae | 4613 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4614 | (void (*)(struct hash_bucket *, |
d62a17ae | 4615 | void *))update_router_id_vni, |
4616 | bgp); | |
676f83b9 | 4617 | } |
2d48ee25 | 4618 | } |
4619 | ||
bf1061d8 VB |
4620 | /* |
4621 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4622 | */ | |
4623 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4624 | { | |
4625 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4626 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4627 | void*))update_autort_vni, |
4628 | bgp); | |
4629 | } | |
4630 | ||
90e60aa7 | 4631 | /* |
4632 | * Handle change to export RT - update and advertise local routes. | |
4633 | */ | |
d62a17ae | 4634 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4635 | { |
d62a17ae | 4636 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4637 | } |
4638 | ||
996c9314 | 4639 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4640 | { |
4641 | if (withdraw) | |
4642 | delete_withdraw_vrf_routes(bgp_vrf); | |
4643 | else | |
4644 | update_advertise_vrf_routes(bgp_vrf); | |
4645 | } | |
4646 | ||
90e60aa7 | 4647 | /* |
4648 | * Handle change to RD. This is invoked twice by the change handler, | |
4649 | * first before the RD has been changed and then after the RD has | |
4650 | * been changed. The first invocation will result in local routes | |
4651 | * of this VNI being deleted and withdrawn and the next will result | |
4652 | * in the routes being re-advertised. | |
4653 | */ | |
d62a17ae | 4654 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4655 | int withdraw) | |
90e60aa7 | 4656 | { |
d62a17ae | 4657 | if (withdraw) |
4658 | delete_withdraw_vni_routes(bgp, vpn); | |
4659 | else | |
4660 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4661 | } |
4662 | ||
4663 | /* | |
4664 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4665 | */ | |
d62a17ae | 4666 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4667 | { |
d62a17ae | 4668 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4669 | } |
4670 | ||
4671 | /* | |
4672 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4673 | * to Import RT. | |
4674 | */ | |
d62a17ae | 4675 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4676 | { |
d62a17ae | 4677 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4678 | } |
4679 | ||
b16031a2 | 4680 | /* |
b57ba6d2 | 4681 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4682 | */ |
d7c0a89a | 4683 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4684 | int len) |
b16031a2 | 4685 | { |
b57ba6d2 | 4686 | vni_t vni1, vni2; |
b16031a2 | 4687 | |
b57ba6d2 MK |
4688 | vni1 = label2vni(label); |
4689 | if (num_labels == 2) { | |
996c9314 | 4690 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4691 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4692 | } else | |
4693 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4694 | return buf; |
b16031a2 | 4695 | } |
4696 | ||
9c92b5f7 MK |
4697 | /* |
4698 | * Function to convert evpn route to json format. | |
4699 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4700 | */ | |
57f7feb6 | 4701 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4702 | { |
b682f6de | 4703 | char buf1[ETHER_ADDR_STRLEN]; |
4704 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4705 | uint8_t family; |
4706 | uint8_t prefixlen; | |
9c92b5f7 | 4707 | |
b682f6de | 4708 | if (!json) |
4709 | return; | |
9c92b5f7 | 4710 | |
44c69747 LK |
4711 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4712 | ||
4713 | switch (p->prefix.route_type) { | |
4714 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4715 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4716 | p->prefix.macip_addr.eth_tag); |
4717 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4718 | json_object_string_add(json, "mac", | |
4719 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4720 | sizeof(buf1))); | |
4721 | ||
4722 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4723 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4724 | AF_INET6; | |
4725 | prefixlen = (family == AF_INET) ? | |
4726 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4727 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4728 | buf2, PREFIX2STR_BUFFER); | |
4729 | json_object_int_add(json, "ipLen", prefixlen); | |
4730 | json_object_string_add(json, "ip", buf2); | |
4731 | } | |
4732 | break; | |
dff8f48d | 4733 | |
44c69747 LK |
4734 | case BGP_EVPN_IMET_ROUTE: |
4735 | json_object_int_add(json, "ethTag", | |
4736 | p->prefix.imet_addr.eth_tag); | |
4737 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4738 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4739 | IPV6_MAX_BITLEN; | |
4740 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4741 | PREFIX2STR_BUFFER); | |
4742 | json_object_int_add(json, "ipLen", prefixlen); | |
4743 | json_object_string_add(json, "ip", buf2); | |
4744 | break; | |
dff8f48d | 4745 | |
44c69747 LK |
4746 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4747 | json_object_int_add(json, "ethTag", | |
4748 | p->prefix.prefix_addr.eth_tag); | |
4749 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4750 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4751 | buf2, sizeof(buf2)); | |
4752 | json_object_int_add(json, "ipLen", | |
4753 | p->prefix.prefix_addr.ip_prefix_length); | |
4754 | json_object_string_add(json, "ip", buf2); | |
4755 | break; | |
4756 | ||
4757 | default: | |
4758 | break; | |
dff8f48d | 4759 | } |
9c92b5f7 MK |
4760 | } |
4761 | ||
520d5d76 | 4762 | /* |
4763 | * Function to convert evpn route to string. | |
4764 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4765 | */ | |
d62a17ae | 4766 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4767 | { | |
4768 | char buf1[ETHER_ADDR_STRLEN]; | |
4769 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4770 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4771 | |
4772 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4773 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4774 | p->prefix.imet_addr.eth_tag, |
4775 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4776 | : IPV6_MAX_BITLEN, |
3714a385 | 4777 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4778 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4779 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4780 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4781 | p->prefix.route_type, | |
3714a385 | 4782 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4783 | 8 * ETH_ALEN, |
3714a385 | 4784 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4785 | sizeof(buf1))); |
4786 | else { | |
d7c0a89a | 4787 | uint8_t family; |
d62a17ae | 4788 | |
3714a385 | 4789 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4790 | : AF_INET6; |
554cd77a VB |
4791 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4792 | p->prefix.route_type, | |
3714a385 | 4793 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4794 | 8 * ETH_ALEN, |
3714a385 | 4795 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4796 | sizeof(buf1)), |
4797 | family == AF_INET ? IPV4_MAX_BITLEN | |
4798 | : IPV6_MAX_BITLEN, | |
3714a385 | 4799 | inet_ntop(family, |
4800 | &p->prefix.macip_addr.ip.ip.addr, | |
4801 | buf2, | |
d62a17ae | 4802 | PREFIX2STR_BUFFER)); |
4803 | } | |
342dd0c6 | 4804 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4805 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4806 | p->prefix.route_type, | |
3714a385 | 4807 | p->prefix.prefix_addr.eth_tag, |
4808 | p->prefix.prefix_addr.ip_prefix_length, | |
4809 | is_evpn_prefix_ipaddr_v4(p) | |
4810 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4811 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4812 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4813 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4814 | p->prefix.route_type, | |
4815 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4816 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4817 | : IPV6_MAX_BITLEN, | |
4818 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4819 | } else { |
b03b8898 | 4820 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4821 | snprintf(buf, len, "(unsupported route type %d)", |
4822 | p->prefix.route_type); | |
d62a17ae | 4823 | } |
4824 | ||
4825 | return (buf); | |
520d5d76 | 4826 | } |
4827 | ||
128ea8ab | 4828 | /* |
4829 | * Encode EVPN prefix in Update (MP_REACH) | |
4830 | */ | |
d62a17ae | 4831 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4832 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4833 | uint32_t num_labels, struct attr *attr, |
4834 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4835 | { |
4836 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4837 | int len, ipa_len = 0; |
d62a17ae | 4838 | |
4839 | if (addpath_encode) | |
4840 | stream_putl(s, addpath_tx_id); | |
4841 | ||
4842 | /* Route type */ | |
4843 | stream_putc(s, evp->prefix.route_type); | |
4844 | ||
4845 | switch (evp->prefix.route_type) { | |
4846 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4847 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4848 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4849 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4850 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4851 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4852 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4853 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4854 | len += 3; | |
4855 | stream_putc(s, len); | |
996c9314 | 4856 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4857 | if (attr) |
4858 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4859 | else | |
4860 | stream_put(s, 0, 10); | |
3714a385 | 4861 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4862 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4863 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4864 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4865 | if (ipa_len) /* IP */ | |
4866 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4867 | ipa_len); | |
b57ba6d2 MK |
4868 | /* 1st label is the L2 VNI */ |
4869 | stream_put(s, label, BGP_LABEL_BYTES); | |
4870 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4871 | if (ipa_len && num_labels > 1) | |
996c9314 | 4872 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4873 | break; |
4874 | ||
4875 | case BGP_EVPN_IMET_ROUTE: | |
4876 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4877 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4878 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4879 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4880 | /* Originating Router's IP Addr */ | |
3714a385 | 4881 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4882 | break; |
4883 | ||
50f74cf1 | 4884 | case BGP_EVPN_ES_ROUTE: |
4885 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4886 | stream_put(s, prd->val, 8); /* RD */ | |
4887 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4888 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4889 | /* VTEP IP */ |
4890 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4891 | break; |
4892 | ||
d62a17ae | 4893 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4894 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4895 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4896 | break; |
4897 | ||
4898 | default: | |
4899 | break; | |
4900 | } | |
4901 | } | |
4902 | ||
4903 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4904 | struct bgp_nlri *packet, int withdraw) | |
4905 | { | |
d7c0a89a QY |
4906 | uint8_t *pnt; |
4907 | uint8_t *lim; | |
d62a17ae | 4908 | afi_t afi; |
4909 | safi_t safi; | |
d7c0a89a | 4910 | uint32_t addpath_id; |
d62a17ae | 4911 | int addpath_encoded; |
4912 | int psize = 0; | |
d7c0a89a | 4913 | uint8_t rtype; |
d62a17ae | 4914 | struct prefix p; |
4915 | ||
d62a17ae | 4916 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4917 | pnt = packet->nlri; | |
4918 | lim = pnt + packet->length; | |
4919 | afi = packet->afi; | |
4920 | safi = packet->safi; | |
4921 | addpath_id = 0; | |
4922 | ||
4923 | addpath_encoded = | |
4924 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4925 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4926 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4927 | ||
4928 | for (; pnt < lim; pnt += psize) { | |
4929 | /* Clear prefix structure. */ | |
4930 | memset(&p, 0, sizeof(struct prefix)); | |
4931 | ||
4932 | /* Deal with path-id if AddPath is supported. */ | |
4933 | if (addpath_encoded) { | |
4934 | /* When packet overflow occurs return immediately. */ | |
4935 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4936 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4937 | |
4938 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4939 | pnt += BGP_ADDPATH_ID_LEN; | |
4940 | } | |
4941 | ||
4942 | /* All EVPN NLRI types start with type and length. */ | |
4943 | if (pnt + 2 > lim) | |
513386b5 | 4944 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4945 | |
4946 | rtype = *pnt++; | |
3f54c705 | 4947 | psize = *pnt++; |
d62a17ae | 4948 | |
4949 | /* When packet overflow occur return immediately. */ | |
4950 | if (pnt + psize > lim) | |
513386b5 | 4951 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4952 | |
4953 | switch (rtype) { | |
4954 | case BGP_EVPN_MAC_IP_ROUTE: | |
4955 | if (process_type2_route(peer, afi, safi, | |
4956 | withdraw ? NULL : attr, pnt, | |
4957 | psize, addpath_id)) { | |
af4c2728 | 4958 | flog_err( |
e50f7cfd | 4959 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4960 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4961 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4962 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4963 | } |
4964 | break; | |
4965 | ||
4966 | case BGP_EVPN_IMET_ROUTE: | |
4967 | if (process_type3_route(peer, afi, safi, | |
4968 | withdraw ? NULL : attr, pnt, | |
4969 | psize, addpath_id)) { | |
af4c2728 | 4970 | flog_err( |
e50f7cfd | 4971 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4972 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4973 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4974 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4975 | } |
4976 | break; | |
4977 | ||
50f74cf1 | 4978 | case BGP_EVPN_ES_ROUTE: |
4979 | if (process_type4_route(peer, afi, safi, | |
4980 | withdraw ? NULL : attr, pnt, | |
4981 | psize, addpath_id)) { | |
af4c2728 | 4982 | flog_err( |
e50f7cfd | 4983 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4984 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4985 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4986 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4987 | } |
4988 | break; | |
4989 | ||
d62a17ae | 4990 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4991 | if (process_type5_route(peer, afi, safi, |
4992 | withdraw ? NULL : attr, pnt, | |
4993 | psize, addpath_id)) { | |
af4c2728 | 4994 | flog_err( |
e50f7cfd | 4995 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4996 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4997 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4998 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4999 | } |
5000 | break; | |
5001 | ||
5002 | default: | |
5003 | break; | |
5004 | } | |
5005 | } | |
5006 | ||
5007 | /* Packet length consistency check. */ | |
5008 | if (pnt != lim) | |
513386b5 | 5009 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5010 | |
513386b5 | 5011 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5012 | } |
5013 | ||
10ebe1ab MK |
5014 | /* |
5015 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5016 | * The mapping will be used during route processing. | |
5017 | * bgp_def: default bgp instance | |
5018 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5019 | */ | |
5020 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5021 | { | |
5022 | int i = 0; | |
5023 | struct ecommunity_val *eval = NULL; | |
5024 | struct listnode *node = NULL, *nnode = NULL; | |
5025 | struct ecommunity *ecom = NULL; | |
5026 | ||
5027 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5028 | for (i = 0; i < ecom->size; i++) { | |
5029 | eval = (struct ecommunity_val *)(ecom->val | |
5030 | + (i | |
5031 | * ECOMMUNITY_SIZE)); | |
5032 | map_vrf_to_rt(bgp_vrf, eval); | |
5033 | } | |
5034 | } | |
5035 | } | |
5036 | ||
5037 | /* | |
5038 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5039 | */ | |
5040 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5041 | { | |
5042 | int i; | |
5043 | struct ecommunity_val *eval; | |
5044 | struct listnode *node, *nnode; | |
5045 | struct ecommunity *ecom; | |
5046 | ||
5047 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5048 | for (i = 0; i < ecom->size; i++) { | |
5049 | struct vrf_irt_node *irt; | |
5050 | struct ecommunity_val eval_tmp; | |
5051 | ||
5052 | eval = (struct ecommunity_val *)(ecom->val | |
5053 | + (i | |
5054 | * ECOMMUNITY_SIZE)); | |
5055 | /* If using "automatic" RT, we only care about the | |
5056 | * local-admin sub-field. | |
5057 | * This is to facilitate using VNI as the RT for EBGP | |
5058 | * peering too. | |
5059 | */ | |
5060 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5061 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5062 | BGP_VRF_IMPORT_RT_CFGD)) | |
5063 | mask_ecom_global_admin(&eval_tmp, eval); | |
5064 | ||
5065 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5066 | if (irt) | |
5067 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5068 | } | |
5069 | } | |
5070 | } | |
5071 | ||
5072 | ||
128ea8ab | 5073 | /* |
5074 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5075 | * The mapping will be used during route processing. | |
5076 | */ | |
d62a17ae | 5077 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5078 | { |
d62a17ae | 5079 | int i; |
5080 | struct ecommunity_val *eval; | |
5081 | struct listnode *node, *nnode; | |
5082 | struct ecommunity *ecom; | |
128ea8ab | 5083 | |
d62a17ae | 5084 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5085 | for (i = 0; i < ecom->size; i++) { | |
5086 | eval = (struct ecommunity_val *)(ecom->val | |
5087 | + (i | |
5088 | * ECOMMUNITY_SIZE)); | |
5089 | map_vni_to_rt(bgp, vpn, eval); | |
5090 | } | |
5091 | } | |
128ea8ab | 5092 | } |
5093 | ||
5094 | /* | |
5095 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5096 | */ | |
d62a17ae | 5097 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5098 | { |
d62a17ae | 5099 | int i; |
5100 | struct ecommunity_val *eval; | |
5101 | struct listnode *node, *nnode; | |
5102 | struct ecommunity *ecom; | |
128ea8ab | 5103 | |
d62a17ae | 5104 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5105 | for (i = 0; i < ecom->size; i++) { | |
5106 | struct irt_node *irt; | |
5107 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5108 | |
d62a17ae | 5109 | eval = (struct ecommunity_val *)(ecom->val |
5110 | + (i | |
5111 | * ECOMMUNITY_SIZE)); | |
5112 | /* If using "automatic" RT, we only care about the | |
5113 | * local-admin sub-field. | |
5114 | * This is to facilitate using VNI as the RT for EBGP | |
5115 | * peering too. | |
5116 | */ | |
5117 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5118 | if (!is_import_rt_configured(vpn)) | |
5119 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5120 | |
d62a17ae | 5121 | irt = lookup_import_rt(bgp, &eval_tmp); |
5122 | if (irt) | |
5123 | unmap_vni_from_rt(bgp, vpn, irt); | |
5124 | } | |
5125 | } | |
128ea8ab | 5126 | } |
5127 | ||
5128 | /* | |
5129 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5130 | * The mapping will be used during route processing. | |
5131 | */ | |
d62a17ae | 5132 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5133 | { |
c581d8b0 | 5134 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5135 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5136 | |
d62a17ae | 5137 | /* Map RT to VNI */ |
5138 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5139 | } |
5140 | ||
5141 | /* | |
5142 | * Derive Export RT automatically for VNI. | |
5143 | */ | |
d62a17ae | 5144 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5145 | { |
c581d8b0 | 5146 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5147 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5148 | } |
5149 | ||
676f83b9 | 5150 | /* |
5151 | * Derive RD automatically for VNI using passed information - it | |
5152 | * is of the form RouterId:unique-id-for-vni. | |
5153 | */ | |
5154 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5155 | { | |
9e97ff03 CS |
5156 | if (is_vrf_rd_configured(bgp)) |
5157 | return; | |
5158 | ||
92708db6 | 5159 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5160 | } |
5161 | ||
128ea8ab | 5162 | /* |
5163 | * Derive RD automatically for VNI using passed information - it | |
5164 | * is of the form RouterId:unique-id-for-vni. | |
5165 | */ | |
d62a17ae | 5166 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5167 | { |
d62a17ae | 5168 | char buf[100]; |
128ea8ab | 5169 | |
d62a17ae | 5170 | vpn->prd.family = AF_UNSPEC; |
5171 | vpn->prd.prefixlen = 64; | |
5172 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5173 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5174 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5175 | } |
5176 | ||
7df407ed CS |
5177 | /* |
5178 | * Lookup L3-VNI | |
5179 | */ | |
5180 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5181 | { | |
5182 | struct list *inst = bm->bgp; | |
5183 | struct listnode *node; | |
5184 | struct bgp *bgp_vrf; | |
5185 | ||
5186 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5187 | if (bgp_vrf->l3vni == vni) | |
5188 | return true; | |
5189 | } | |
5190 | ||
5191 | return false; | |
5192 | } | |
5193 | ||
128ea8ab | 5194 | /* |
5195 | * Lookup VNI. | |
5196 | */ | |
d62a17ae | 5197 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5198 | { |
d62a17ae | 5199 | struct bgpevpn *vpn; |
5200 | struct bgpevpn tmp; | |
128ea8ab | 5201 | |
d62a17ae | 5202 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5203 | tmp.vni = vni; | |
5204 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5205 | return vpn; | |
128ea8ab | 5206 | } |
5207 | ||
5208 | /* | |
5209 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5210 | */ | |
d62a17ae | 5211 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5212 | struct in_addr originator_ip, |
5213 | vrf_id_t tenant_vrf_id, | |
5214 | struct in_addr mcast_grp) | |
128ea8ab | 5215 | { |
d62a17ae | 5216 | struct bgpevpn *vpn; |
128ea8ab | 5217 | |
d62a17ae | 5218 | if (!bgp) |
5219 | return NULL; | |
128ea8ab | 5220 | |
d62a17ae | 5221 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5222 | |
d62a17ae | 5223 | /* Set values - RD and RT set to defaults. */ |
5224 | vpn->vni = vni; | |
5225 | vpn->originator_ip = originator_ip; | |
29c53922 | 5226 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5227 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5228 | |
d62a17ae | 5229 | /* Initialize route-target import and export lists */ |
5230 | vpn->import_rtl = list_new(); | |
5231 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5232 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5233 | vpn->export_rtl = list_new(); |
5234 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5235 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5236 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5237 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5238 | |
d62a17ae | 5239 | /* Initialize EVPN route table. */ |
960035b2 | 5240 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5241 | |
d62a17ae | 5242 | /* Add to hash */ |
5243 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5244 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5245 | return NULL; | |
5246 | } | |
6a8657d0 MK |
5247 | |
5248 | /* add to l2vni list on corresponding vrf */ | |
5249 | bgpevpn_link_to_l3vni(vpn); | |
5250 | ||
d62a17ae | 5251 | QOBJ_REG(vpn, bgpevpn); |
5252 | return vpn; | |
128ea8ab | 5253 | } |
5254 | ||
5255 | /* | |
5256 | * Free a given VPN - called in multiple scenarios such as zebra | |
5257 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5258 | * This just frees appropriate memory, caller should have taken other | |
5259 | * needed actions. | |
5260 | */ | |
d62a17ae | 5261 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5262 | { |
6a8657d0 | 5263 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5264 | bgp_table_unlock(vpn->route_table); |
5265 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5266 | list_delete(&vpn->import_rtl); |
5267 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5268 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5269 | hash_release(bgp->vnihash, vpn); |
5270 | QOBJ_UNREG(vpn); | |
5271 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5272 | } |
5273 | ||
5274 | /* | |
50f74cf1 | 5275 | * Lookup local ES. |
5276 | */ | |
5277 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5278 | { | |
5279 | struct evpnes *es; | |
5280 | struct evpnes tmp; | |
5281 | ||
5282 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5283 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5284 | es = hash_lookup(bgp->esihash, &tmp); | |
5285 | return es; | |
5286 | } | |
5287 | ||
5288 | /* | |
5289 | * Create a new local es - invoked upon zebra notification. | |
5290 | */ | |
5291 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5292 | esi_t *esi, | |
5293 | struct ipaddr *originator_ip) | |
5294 | { | |
5295 | char buf[100]; | |
5296 | struct evpnes *es; | |
5297 | ||
5298 | if (!bgp) | |
5299 | return NULL; | |
5300 | ||
5301 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5302 | |
5303 | /* set the ESI and originator_ip */ | |
5304 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5305 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5306 | ||
5307 | /* Initialise the VTEP list */ | |
5308 | es->vtep_list = list_new(); | |
ce167790 | 5309 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5310 | |
5311 | /* auto derive RD for this es */ | |
5312 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5313 | es->prd.family = AF_UNSPEC; | |
5314 | es->prd.prefixlen = 64; | |
5315 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5316 | (void)str2prefix_rd(buf, &es->prd); | |
5317 | ||
5318 | /* Initialize the ES route table */ | |
5319 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5320 | ||
5321 | /* Add to hash */ | |
5322 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5323 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5324 | return NULL; | |
5325 | } | |
5326 | ||
5327 | QOBJ_REG(es, evpnes); | |
5328 | return es; | |
5329 | } | |
5330 | ||
5331 | /* | |
5332 | * Free a given ES - | |
5333 | * This just frees appropriate memory, caller should have taken other | |
5334 | * needed actions. | |
5335 | */ | |
5336 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5337 | { | |
6a154c88 | 5338 | list_delete(&es->vtep_list); |
50f74cf1 | 5339 | bgp_table_unlock(es->route_table); |
5340 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5341 | hash_release(bgp->esihash, es); | |
5342 | QOBJ_UNREG(es); | |
5343 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5344 | } | |
5345 | ||
5346 | /* | |
5347 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5348 | */ |
d62a17ae | 5349 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5350 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5351 | { |
40381db7 | 5352 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5353 | } |
5354 | ||
5355 | /* | |
50f74cf1 | 5356 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5357 | */ |
d62a17ae | 5358 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5359 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5360 | { |
40381db7 | 5361 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5362 | } |
5363 | ||
db0e1937 MK |
5364 | /* filter routes which have martian next hops */ |
5365 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5366 | { | |
0291c246 MK |
5367 | afi_t afi; |
5368 | safi_t safi; | |
5369 | struct bgp_node *rd_rn, *rn; | |
5370 | struct bgp_table *table; | |
40381db7 | 5371 | struct bgp_path_info *pi; |
db0e1937 MK |
5372 | |
5373 | afi = AFI_L2VPN; | |
5374 | safi = SAFI_EVPN; | |
5375 | ||
5376 | /* Walk entire global routing table and evaluate routes which could be | |
5377 | * imported into this VPN. Note that we cannot just look at the routes | |
5378 | * for the VNI's RD - | |
5379 | * remote routes applicable for this VNI could have any RD. | |
5380 | */ | |
5381 | /* EVPN routes are a 2-level table. */ | |
5382 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5383 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5384 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5385 | if (!table) |
5386 | continue; | |
5387 | ||
5388 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5389 | ||
6f94b685 DS |
5390 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5391 | pi = pi->next) { | |
db0e1937 MK |
5392 | |
5393 | /* Consider "valid" remote routes applicable for | |
5394 | * this VNI. */ | |
40381db7 DS |
5395 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5396 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5397 | continue; |
949b0f24 | 5398 | if (bgp_nexthop_self(bgp, afi, |
5399 | pi->type, pi->sub_type, | |
5400 | pi->attr, rn)) { | |
db0e1937 | 5401 | |
8ba71050 | 5402 | char attr_str[BUFSIZ] = {0}; |
db0e1937 MK |
5403 | char pbuf[PREFIX_STRLEN]; |
5404 | ||
40381db7 | 5405 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5406 | BUFSIZ); |
5407 | ||
40381db7 | 5408 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5409 | NULL, 1)) |
5410 | zlog_debug( | |
b682f6de | 5411 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5412 | bgp->vrf_id, |
5413 | prefix2str( | |
60466a63 | 5414 | &rn->p, pbuf, |
db0e1937 MK |
5415 | sizeof(pbuf)), |
5416 | attr_str); | |
5417 | ||
5418 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5419 | &rn->p, pi); |
db0e1937 | 5420 | |
40381db7 | 5421 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5422 | safi); |
db0e1937 | 5423 | } |
db0e1937 MK |
5424 | } |
5425 | } | |
5426 | } | |
5427 | ||
5428 | return 0; | |
5429 | } | |
5430 | ||
128ea8ab | 5431 | /* |
5432 | * Handle del of a local MACIP. | |
5433 | */ | |
d62a17ae | 5434 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5435 | struct ipaddr *ip, int state) |
128ea8ab | 5436 | { |
d62a17ae | 5437 | struct bgpevpn *vpn; |
5438 | struct prefix_evpn p; | |
ec0ab544 | 5439 | struct bgp_node *rn; |
128ea8ab | 5440 | |
d62a17ae | 5441 | /* Lookup VNI hash - should exist. */ |
5442 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5443 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5444 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5445 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5446 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5447 | return -1; | |
5448 | } | |
128ea8ab | 5449 | |
d62a17ae | 5450 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5451 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5452 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5453 | delete_evpn_route(bgp, vpn, &p); | |
5454 | } else { | |
5455 | /* Re-instate the current remote best path if any */ | |
5456 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5457 | if (rn) | |
5458 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5459 | } | |
128ea8ab | 5460 | |
d62a17ae | 5461 | return 0; |
128ea8ab | 5462 | } |
5463 | ||
5464 | /* | |
5465 | * Handle add of a local MACIP. | |
5466 | */ | |
d62a17ae | 5467 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5468 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5469 | { |
d62a17ae | 5470 | struct bgpevpn *vpn; |
5471 | struct prefix_evpn p; | |
128ea8ab | 5472 | |
d62a17ae | 5473 | /* Lookup VNI hash - should exist. */ |
5474 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5475 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5476 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5477 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5478 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5479 | return -1; | |
5480 | } | |
128ea8ab | 5481 | |
d62a17ae | 5482 | /* Create EVPN type-2 route and schedule for processing. */ |
5483 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5484 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5485 | char buf[ETHER_ADDR_STRLEN]; |
5486 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5487 | |
af4c2728 | 5488 | flog_err( |
e50f7cfd | 5489 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5490 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5491 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5492 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5493 | ? "sticky gateway" | |
5494 | : "", | |
d62a17ae | 5495 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5496 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5497 | return -1; |
5498 | } | |
128ea8ab | 5499 | |
d62a17ae | 5500 | return 0; |
128ea8ab | 5501 | } |
5502 | ||
e3b78da8 | 5503 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5504 | struct bgp *bgp_vrf) |
5505 | { | |
e3b78da8 | 5506 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5507 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5508 | |
5e53dce3 T |
5509 | bgp_evpn = bgp_get_evpn(); |
5510 | assert(bgp_evpn); | |
6a8657d0 | 5511 | |
6a8657d0 MK |
5512 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5513 | bgpevpn_link_to_l3vni(vpn); | |
5514 | } | |
5515 | ||
996c9314 | 5516 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
0483af6e | 5517 | struct in_addr originator_ip, int filter, |
5518 | ifindex_t svi_ifindex) | |
fe1dc5a3 MK |
5519 | { |
5520 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5521 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5522 | struct listnode *node = NULL; |
5523 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5524 | as_t as = 0; |
5525 | ||
3621ebc5 | 5526 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5527 | * auto-creatio |
5528 | */ | |
5e53dce3 T |
5529 | bgp_evpn = bgp_get_evpn(); |
5530 | if (!bgp_evpn) { | |
af4c2728 | 5531 | flog_err( |
e50f7cfd | 5532 | EC_BGP_NO_DFLT, |
3621ebc5 | 5533 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5534 | l3vni); |
fe1dc5a3 MK |
5535 | return -1; |
5536 | } | |
5e53dce3 | 5537 | as = bgp_evpn->as; |
fe1dc5a3 | 5538 | |
0437e105 | 5539 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5540 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5541 | if (!bgp_vrf) { |
5542 | ||
5543 | int ret = 0; | |
5544 | ||
5545 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
3621ebc5 T |
5546 | vrf_id == VRF_DEFAULT ? BGP_INSTANCE_TYPE_DEFAULT |
5547 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5548 | switch (ret) { |
fe1dc5a3 | 5549 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5550 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5551 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5552 | return -1; |
5553 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5554 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5555 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5556 | return -1; |
5557 | } | |
5558 | ||
5559 | /* mark as auto created */ | |
5560 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5561 | } | |
5562 | ||
0483af6e | 5563 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5564 | bgp_vrf->l3vni = l3vni; |
fe1dc5a3 | 5565 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); |
b67a60d2 | 5566 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5567 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
b67a60d2 | 5568 | |
c48d9f5f MK |
5569 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5570 | if (filter) | |
5571 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5572 | ||
530e8a6e | 5573 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5574 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5575 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5576 | else |
5577 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5578 | ||
c581d8b0 MK |
5579 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5580 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5581 | |
5582 | /* auto derive RD */ | |
676f83b9 | 5583 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5584 | |
6a8657d0 | 5585 | /* link all corresponding l2vnis */ |
5e53dce3 | 5586 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5587 | (void (*)(struct hash_bucket *, |
996c9314 | 5588 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5589 | bgp_vrf); |
5590 | ||
c48d9f5f MK |
5591 | /* Only update all corresponding type-2 routes if we are advertising two |
5592 | * labels along with type-2 routes | |
5593 | */ | |
5594 | if (!filter) | |
5595 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5596 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5597 | |
06d2e8f3 MK |
5598 | /* advertise type-5 routes if needed */ |
5599 | update_advertise_vrf_routes(bgp_vrf); | |
5600 | ||
5ba238b7 MK |
5601 | /* install all remote routes belonging to this l3vni into correspondng |
5602 | * vrf */ | |
5603 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5604 | |
5605 | return 0; | |
5606 | } | |
5607 | ||
996c9314 | 5608 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5609 | { |
5610 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5611 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5612 | struct listnode *node = NULL; |
18abc1eb | 5613 | struct listnode *next = NULL; |
f1f8b53c | 5614 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5615 | |
5616 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5617 | if (!bgp_vrf) { | |
af4c2728 | 5618 | flog_err( |
e50f7cfd | 5619 | EC_BGP_NO_DFLT, |
996c9314 LB |
5620 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5621 | l3vni); | |
fe1dc5a3 MK |
5622 | return -1; |
5623 | } | |
5624 | ||
5e53dce3 T |
5625 | bgp_evpn = bgp_get_evpn(); |
5626 | if (!bgp_evpn) { | |
af4c2728 | 5627 | flog_err( |
e50f7cfd | 5628 | EC_BGP_NO_DFLT, |
3621ebc5 | 5629 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5630 | l3vni); |
f1f8b53c MK |
5631 | return -1; |
5632 | } | |
5633 | ||
d846168d | 5634 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5635 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5636 | * routes. This will uninstalling the routes from zebra and decremnt the |
5637 | * bgp info count. | |
523cafc4 | 5638 | */ |
d846168d | 5639 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5640 | |
06d2e8f3 MK |
5641 | /* delete/withdraw all type-5 routes */ |
5642 | delete_withdraw_vrf_routes(bgp_vrf); | |
5643 | ||
fe1dc5a3 MK |
5644 | /* remove the l3vni from vrf instance */ |
5645 | bgp_vrf->l3vni = 0; | |
5646 | ||
5647 | /* remove the Rmac from the BGP vrf */ | |
5648 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5649 | ||
530e8a6e | 5650 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5651 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5652 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5653 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5654 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5655 | } |
530e8a6e CS |
5656 | |
5657 | /* remove default export RT */ | |
5658 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5659 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5660 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5661 | } |
fe1dc5a3 | 5662 | |
f1f8b53c | 5663 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5664 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5665 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5666 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5667 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5668 | } |
5669 | } | |
fe1dc5a3 | 5670 | |
18abc1eb | 5671 | /* If any L2VNIs point to this instance, unlink them. */ |
5672 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5673 | bgpevpn_unlink_from_l3vni(vpn); | |
5674 | ||
ff9d54fb CS |
5675 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5676 | ||
fe1dc5a3 MK |
5677 | /* Delete the instance if it was autocreated */ |
5678 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5679 | bgp_delete(bgp_vrf); | |
5680 | ||
5681 | return 0; | |
5682 | } | |
5683 | ||
128ea8ab | 5684 | /* |
5685 | * Handle del of a local VNI. | |
5686 | */ | |
d62a17ae | 5687 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5688 | { |
d62a17ae | 5689 | struct bgpevpn *vpn; |
128ea8ab | 5690 | |
d62a17ae | 5691 | /* Locate VNI hash */ |
5692 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5693 | if (!vpn) { | |
1e00627b | 5694 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5695 | flog_warn( |
e50f7cfd | 5696 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5697 | "%u: VNI hash entry for VNI %u not found at DEL", |
5698 | bgp->vrf_id, vni); | |
d62a17ae | 5699 | return 0; |
5700 | } | |
128ea8ab | 5701 | |
d62a17ae | 5702 | /* Remove all local EVPN routes and schedule for processing (to |
5703 | * withdraw from peers). | |
5704 | */ | |
5705 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5706 | |
db0e1937 MK |
5707 | /* |
5708 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5709 | */ | |
5710 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5711 | ||
d62a17ae | 5712 | /* Clear "live" flag and see if hash needs to be freed. */ |
5713 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5714 | if (!is_vni_configured(vpn)) | |
5715 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5716 | |
d62a17ae | 5717 | return 0; |
128ea8ab | 5718 | } |
5719 | ||
5720 | /* | |
d1911c26 | 5721 | * Handle add (or update) of a local VNI. The VNI changes we care |
5722 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5723 | */ |
d62a17ae | 5724 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5725 | struct in_addr originator_ip, |
5726 | vrf_id_t tenant_vrf_id, | |
5727 | struct in_addr mcast_grp) | |
5728 | ||
d62a17ae | 5729 | { |
5730 | struct bgpevpn *vpn; | |
5731 | struct prefix_evpn p; | |
5732 | ||
d62a17ae | 5733 | /* Lookup VNI. If present and no change, exit. */ |
5734 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5735 | if (vpn) { |
29c53922 | 5736 | |
d1911c26 | 5737 | if (is_vni_live(vpn) |
5738 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5739 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5740 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5741 | /* Probably some other param has changed that we don't | |
5742 | * care about. */ | |
5743 | return 0; | |
5744 | ||
76d07c7a AK |
5745 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5746 | ||
d1911c26 | 5747 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5748 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5749 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5750 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5751 | bgpevpn_link_to_l3vni(vpn); |
5752 | } | |
29c53922 | 5753 | |
d1911c26 | 5754 | /* If tunnel endpoint IP has changed, update (and delete prior |
5755 | * type-3 route, if needed.) | |
5756 | */ | |
5757 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5758 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5759 | |
d1911c26 | 5760 | /* Update all routes with new endpoint IP and/or export RT |
5761 | * for VRFs | |
5762 | */ | |
5763 | if (is_vni_live(vpn)) | |
5764 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5765 | } |
5766 | ||
5767 | /* Create or update as appropriate. */ | |
5768 | if (!vpn) { | |
76d07c7a AK |
5769 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5770 | mcast_grp); | |
d62a17ae | 5771 | if (!vpn) { |
af4c2728 | 5772 | flog_err( |
e50f7cfd | 5773 | EC_BGP_VNI, |
d62a17ae | 5774 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5775 | bgp->vrf_id, vni); | |
5776 | return -1; | |
5777 | } | |
5778 | } | |
5779 | ||
db0e1937 | 5780 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5781 | if (is_vni_live(vpn)) |
5782 | return 0; | |
5783 | ||
d62a17ae | 5784 | /* Mark as "live" */ |
5785 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5786 | ||
db0e1937 MK |
5787 | /* tunnel is now active, add tunnel-ip to db */ |
5788 | bgp_tip_add(bgp, &originator_ip); | |
5789 | ||
5790 | /* filter routes as nexthop database has changed */ | |
5791 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5792 | ||
fd069644 DS |
5793 | /* |
5794 | * Create EVPN type-3 route and schedule for processing. | |
5795 | * | |
5796 | * RT-3 only if doing head-end replication | |
5797 | */ | |
833b8a50 AK |
5798 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5799 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
5800 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
5801 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
5802 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
5803 | "%u: Type3 route creation failure for VNI %u", | |
5804 | bgp->vrf_id, vni); | |
5805 | return -1; | |
5806 | } | |
d62a17ae | 5807 | } |
5808 | ||
5809 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5810 | * VNI, | |
5811 | * install them. | |
5812 | */ | |
5813 | install_routes_for_vni(bgp, vpn); | |
5814 | ||
d7d97010 MK |
5815 | /* If we are advertising gateway mac-ip |
5816 | It needs to be conveyed again to zebra */ | |
5817 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5818 | ||
df070e6f CS |
5819 | /* advertise svi mac-ip knob to zebra */ |
5820 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5821 | ||
d62a17ae | 5822 | return 0; |
b18825eb | 5823 | } |
14c1a7bf | 5824 | |
50f74cf1 | 5825 | /* |
5826 | * bgp_evpn_local_es_del | |
5827 | */ | |
5828 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5829 | esi_t *esi, | |
5830 | struct ipaddr *originator_ip) | |
5831 | { | |
5832 | char buf[ESI_STR_LEN]; | |
5833 | struct evpnes *es = NULL; | |
5834 | ||
5835 | if (!bgp->esihash) { | |
e50f7cfd | 5836 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5837 | bgp->vrf_id); |
50f74cf1 | 5838 | return -1; |
5839 | } | |
5840 | ||
5841 | /* Lookup ESI hash - should exist. */ | |
5842 | es = bgp_evpn_lookup_es(bgp, esi); | |
5843 | if (!es) { | |
e50f7cfd | 5844 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
5845 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
5846 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5847 | return -1; |
5848 | } | |
5849 | ||
5850 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5851 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5852 | */ |
5853 | delete_routes_for_es(bgp, es); | |
5854 | ||
5855 | /* free the hash entry */ | |
5856 | bgp_evpn_es_free(bgp, es); | |
5857 | ||
5858 | return 0; | |
5859 | } | |
5860 | ||
5861 | /* | |
5862 | * bgp_evpn_local_es_add | |
5863 | */ | |
5864 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5865 | esi_t *esi, | |
5866 | struct ipaddr *originator_ip) | |
5867 | { | |
5868 | char buf[ESI_STR_LEN]; | |
5869 | struct evpnes *es = NULL; | |
5870 | struct prefix_evpn p; | |
5871 | ||
5872 | if (!bgp->esihash) { | |
e50f7cfd | 5873 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 5874 | bgp->vrf_id); |
50f74cf1 | 5875 | return -1; |
5876 | } | |
5877 | ||
5878 | /* create the new es */ | |
2bb9eff4 | 5879 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5880 | if (!es) { |
5881 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5882 | if (!es) { | |
af4c2728 | 5883 | flog_err( |
e50f7cfd | 5884 | EC_BGP_ES_CREATE, |
50f74cf1 | 5885 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
5886 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5887 | return -1; | |
5888 | } | |
5889 | } | |
5890 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5891 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5892 | ||
5893 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5894 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 5895 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
5896 | "%u: Type4 route creation failure for ESI %s", |
5897 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 5898 | return -1; |
5899 | } | |
5900 | ||
5901 | /* import all remote ES routes in th ES table */ | |
5902 | install_routes_for_es(bgp, es); | |
5903 | ||
5904 | return 0; | |
5905 | } | |
5906 | ||
fd069644 DS |
5907 | /* |
5908 | * Handle change in setting for BUM handling. The supported values | |
5909 | * are head-end replication and dropping all BUM packets. Any change | |
5910 | * should be registered with zebra. Also, if doing head-end replication, | |
5911 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5912 | * to be dropped, the RT-3s must be withdrawn. | |
5913 | */ | |
5914 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5915 | { | |
5916 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5917 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5918 | "Flooding" : "Flooding Disabled"); | |
5919 | ||
5920 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5921 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5922 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5923 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5924 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5925 | } | |
5926 | ||
7724c0a1 | 5927 | /* |
5928 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5929 | * EVPN routes from peers. | |
5930 | */ | |
d62a17ae | 5931 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5932 | { |
e3b78da8 | 5933 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5934 | void *))cleanup_vni_on_disable, |
5935 | bgp); | |
7724c0a1 | 5936 | } |
5937 | ||
14c1a7bf | 5938 | /* |
5939 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5940 | * BGP instance (default) is being freed. | |
5941 | */ | |
d62a17ae | 5942 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5943 | { |
1525e99f | 5944 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5945 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5946 | bgp); |
5947 | ||
5948 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5949 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5950 | |
5951 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5952 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5953 | |
5954 | hash_free(bgp->vnihash); | |
d62a17ae | 5955 | bgp->vnihash = NULL; |
50f74cf1 | 5956 | if (bgp->esihash) |
5957 | hash_free(bgp->esihash); | |
5958 | bgp->esihash = NULL; | |
1525e99f | 5959 | |
6a154c88 DL |
5960 | list_delete(&bgp->vrf_import_rtl); |
5961 | list_delete(&bgp->vrf_export_rtl); | |
5962 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5963 | } |
5964 | ||
5965 | /* | |
5966 | * Initialization for EVPN | |
5967 | * Create | |
5968 | * VNI hash table | |
5969 | * hash for RT to VNI | |
14c1a7bf | 5970 | */ |
d62a17ae | 5971 | void bgp_evpn_init(struct bgp *bgp) |
5972 | { | |
5973 | bgp->vnihash = | |
5974 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5975 | bgp->esihash = |
5976 | hash_create(esi_hash_keymake, esi_cmp, | |
5977 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5978 | bgp->import_rt_hash = |
5979 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5980 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5981 | bgp->vrf_import_rt_hash = |
5982 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5983 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5984 | bgp->vrf_import_rtl = list_new(); |
5985 | bgp->vrf_import_rtl->cmp = | |
5986 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5987 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5988 | bgp->vrf_export_rtl = list_new(); |
5989 | bgp->vrf_export_rtl->cmp = | |
5990 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5991 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5992 | bgp->l2vnis = list_new(); |
64465785 | 5993 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5994 | /* By default Duplicate Address Dection is enabled. |
5995 | * Max-moves (N) 5, detection time (M) 180 | |
5996 | * default action is warning-only | |
5997 | * freeze action permanently freezes address, | |
5998 | * and freeze time (auto-recovery) is disabled. | |
5999 | */ | |
6000 | if (bgp->evpn_info) { | |
6001 | bgp->evpn_info->dup_addr_detect = true; | |
6002 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6003 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6004 | bgp->evpn_info->dad_freeze = false; | |
6005 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6006 | /* Initialize zebra vxlan */ |
6007 | bgp_zebra_dup_addr_detection(bgp); | |
85c8d83b | 6008 | } |
fd069644 DS |
6009 | |
6010 | /* Default BUM handling is to do head-end replication. */ | |
6011 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 6012 | } |
10ebe1ab MK |
6013 | |
6014 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6015 | { | |
6016 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
6017 | } | |
44c69747 LK |
6018 | |
6019 | /* | |
6020 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6021 | */ | |
6022 | int bgp_evpn_get_type5_prefixlen(struct prefix *pfx) | |
6023 | { | |
6024 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6025 | ||
6026 | if (!pfx || pfx->family != AF_EVPN) | |
6027 | return 0; | |
6028 | ||
6029 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6030 | return 0; | |
6031 | ||
6032 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6033 | } | |
7c312383 AD |
6034 | |
6035 | /* | |
6036 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6037 | */ | |
6038 | bool bgp_evpn_is_prefix_nht_supported(struct prefix *pfx) | |
6039 | { | |
6040 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6041 | ||
6042 | /* | |
6043 | * EVPN RT-5 should not be marked as valid and imported to vrfs if the | |
6044 | * BGP nexthop is not reachable. To check for the nexthop reachability, | |
6045 | * Add nexthop for EVPN RT-5 for nexthop tracking. | |
6046 | * | |
6047 | * Ideally, a BGP route should be marked as valid only if the | |
6048 | * nexthop is reachable. Thus, other EVPN route types also should be | |
6049 | * added here after testing is performed for them. | |
6050 | */ | |
6051 | if (pfx && pfx->family == AF_EVPN && | |
6052 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) | |
6053 | return true; | |
6054 | ||
6055 | return false; | |
6056 | } |