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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 | ||
0ca10580 CS |
497 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
498 | struct prefix_evpn *p, | |
499 | struct attr *attr, uint8_t flags) | |
500 | { | |
501 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
502 | ||
503 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
504 | if (!bgp_vrf) | |
505 | return; | |
506 | ||
b96cafa3 CS |
507 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
508 | return; | |
509 | ||
510 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
511 | * in case of route is self MAC-IP, | |
512 | * advertise-pip and advertise-svi-ip features | |
513 | * are enabled. | |
514 | * Otherwise, for all host MAC-IP route's | |
515 | * copy anycast RMAC | |
516 | */ | |
517 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
518 | && bgp_vrf->evpn_info->advertise_pip && | |
519 | bgp_vrf->evpn_info->is_anycast_mac) { | |
520 | /* copy sys rmac */ | |
521 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
522 | ETH_ALEN); | |
523 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
524 | attr->mp_nexthop_global_in = | |
525 | bgp_vrf->evpn_info->pip_ip; | |
526 | } else | |
527 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 528 | } |
b96cafa3 | 529 | |
128ea8ab | 530 | /* |
531 | * Create RT extended community automatically from passed information: | |
532 | * of the form AS:VNI. | |
533 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
534 | * the need is to get a RT value that will be unique across different | |
535 | * VNIs but the same across routers (in the same AS) for a particular | |
536 | * VNI. | |
537 | */ | |
c581d8b0 | 538 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 539 | { |
d62a17ae | 540 | struct ecommunity_val eval; |
b90d4580 CS |
541 | struct ecommunity *ecomadd, *ecom; |
542 | bool ecom_found = false; | |
543 | struct listnode *node; | |
128ea8ab | 544 | |
bf1061d8 VB |
545 | if (bgp->advertise_autort_rfc8365) |
546 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 547 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 548 | |
d62a17ae | 549 | ecomadd = ecommunity_new(); |
550 | ecommunity_add_val(ecomadd, &eval); | |
b90d4580 CS |
551 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
552 | if (ecommunity_cmp(ecomadd, ecom)) | |
553 | ecom_found = true; | |
554 | ||
555 | if (!ecom_found) | |
556 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 557 | } |
14c1a7bf | 558 | |
559 | /* | |
128ea8ab | 560 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
561 | * creation of a VNI. | |
562 | */ | |
d62a17ae | 563 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 564 | { |
d62a17ae | 565 | bgp_evpn_derive_auto_rd(bgp, vpn); |
566 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
567 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 568 | } |
569 | ||
1ec31309 | 570 | /* |
571 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
572 | */ | |
573 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
574 | { | |
575 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
576 | return; | |
577 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
578 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
579 | } | |
580 | ||
128ea8ab | 581 | /* |
582 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 583 | */ |
d62a17ae | 584 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
585 | struct prefix_evpn *p, | |
586 | struct in_addr remote_vtep_ip, int add, | |
f07e1c99 | 587 | uint8_t flags, uint32_t seq) |
d62a17ae | 588 | { |
589 | struct stream *s; | |
590 | int ipa_len; | |
591 | char buf1[ETHER_ADDR_STRLEN]; | |
592 | char buf2[INET6_ADDRSTRLEN]; | |
593 | char buf3[INET6_ADDRSTRLEN]; | |
594 | ||
595 | /* Check socket. */ | |
596 | if (!zclient || zclient->sock < 0) | |
597 | return 0; | |
598 | ||
599 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
600 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
601 | if (BGP_DEBUG(zebra, ZEBRA)) | |
602 | zlog_debug("%s: No zebra instance to talk to, not installing remote macip", | |
603 | __PRETTY_FUNCTION__); | |
d62a17ae | 604 | return 0; |
bb4ef1ae | 605 | } |
d62a17ae | 606 | s = zclient->obuf; |
607 | stream_reset(s); | |
608 | ||
996c9314 LB |
609 | zclient_create_header( |
610 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
611 | bgp->vrf_id); | |
d62a17ae | 612 | stream_putl(s, vpn->vni); |
3714a385 | 613 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 614 | /* IP address length and IP address, if any. */ |
3714a385 | 615 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 616 | stream_putl(s, 0); |
617 | else { | |
3714a385 | 618 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 619 | : IPV6_MAX_BYTELEN; |
620 | stream_putl(s, ipa_len); | |
3714a385 | 621 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 622 | } |
623 | stream_put_in_addr(s, &remote_vtep_ip); | |
624 | ||
ead40654 | 625 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 626 | /* Also TX the sequence number of the best route. */ |
627 | if (add) { | |
ead40654 | 628 | stream_putc(s, flags); |
f07e1c99 | 629 | stream_putl(s, seq); |
630 | } | |
d62a17ae | 631 | |
632 | stream_putw_at(s, 0, stream_get_endp(s)); | |
633 | ||
634 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 635 | zlog_debug( |
f07e1c99 | 636 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 637 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 638 | prefix_mac2str(&p->prefix.macip_addr.mac, |
639 | buf1, sizeof(buf1)), | |
640 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 641 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
642 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
643 | sizeof(buf2))); | |
d62a17ae | 644 | |
645 | return zclient_send_message(zclient); | |
7ef5a232 | 646 | } |
b18825eb | 647 | |
128ea8ab | 648 | /* |
649 | * Add (update) or delete remote VTEP from zebra. | |
650 | */ | |
d62a17ae | 651 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
b16dd019 AK |
652 | struct prefix_evpn *p, |
653 | int flood_control, int add) | |
128ea8ab | 654 | { |
d62a17ae | 655 | struct stream *s; |
128ea8ab | 656 | |
d62a17ae | 657 | /* Check socket. */ |
658 | if (!zclient || zclient->sock < 0) | |
659 | return 0; | |
128ea8ab | 660 | |
d62a17ae | 661 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
662 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
663 | if (BGP_DEBUG(zebra, ZEBRA)) | |
664 | zlog_debug("%s: No zebra instance to talk to, not installing remote vtep", | |
665 | __PRETTY_FUNCTION__); | |
d62a17ae | 666 | return 0; |
bb4ef1ae | 667 | } |
128ea8ab | 668 | |
d62a17ae | 669 | s = zclient->obuf; |
670 | stream_reset(s); | |
128ea8ab | 671 | |
996c9314 LB |
672 | zclient_create_header( |
673 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
674 | bgp->vrf_id); | |
d62a17ae | 675 | stream_putl(s, vpn->vni); |
3714a385 | 676 | if (is_evpn_prefix_ipaddr_v4(p)) |
677 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
678 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 679 | flog_err( |
e50f7cfd | 680 | EC_BGP_VTEP_INVALID, |
d62a17ae | 681 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
682 | add ? "ADD" : "DEL", vpn->vni); | |
683 | return -1; | |
684 | } | |
b16dd019 | 685 | stream_putl(s, flood_control); |
128ea8ab | 686 | |
d62a17ae | 687 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 688 | |
d62a17ae | 689 | if (bgp_debug_zebra(NULL)) |
690 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
691 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 692 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 693 | |
d62a17ae | 694 | return zclient_send_message(zclient); |
128ea8ab | 695 | } |
696 | ||
50f74cf1 | 697 | /* |
698 | * Build extended community for EVPN ES (type-4) route | |
699 | */ | |
700 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
701 | struct attr *attr) | |
702 | { | |
703 | struct ecommunity ecom_encap; | |
704 | struct ecommunity ecom_es_rt; | |
705 | struct ecommunity_val eval; | |
706 | struct ecommunity_val eval_es_rt; | |
707 | bgp_encap_types tnl_type; | |
708 | struct ethaddr mac; | |
709 | ||
710 | /* Encap */ | |
711 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
712 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
713 | encode_encap_extcomm(tnl_type, &eval); | |
714 | ecom_encap.size = 1; | |
715 | ecom_encap.val = (uint8_t *)eval.val; | |
716 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
717 | ||
718 | /* ES import RT */ | |
719 | memset(&mac, 0, sizeof(struct ethaddr)); | |
720 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
721 | es_get_system_mac(&es->esi, &mac); | |
722 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
723 | ecom_es_rt.size = 1; | |
724 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
725 | attr->ecommunity = | |
726 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
727 | ||
728 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
729 | } | |
730 | ||
342dd0c6 | 731 | /* |
732 | * Build extended communities for EVPN prefix route. | |
733 | */ | |
734 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
735 | struct attr *attr) | |
736 | { | |
737 | struct ecommunity ecom_encap; | |
738 | struct ecommunity ecom_rmac; | |
739 | struct ecommunity_val eval; | |
740 | struct ecommunity_val eval_rmac; | |
741 | bgp_encap_types tnl_type; | |
742 | struct listnode *node, *nnode; | |
743 | struct ecommunity *ecom; | |
744 | struct list *vrf_export_rtl = NULL; | |
745 | ||
746 | /* Encap */ | |
747 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
748 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
749 | encode_encap_extcomm(tnl_type, &eval); | |
750 | ecom_encap.size = 1; | |
d7c0a89a | 751 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 752 | |
753 | /* Add Encap */ | |
754 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
755 | ||
756 | /* Add the export RTs for L3VNI/VRF */ | |
757 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
758 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
759 | attr->ecommunity = | |
760 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 761 | |
762 | /* add the router mac extended community */ | |
763 | if (!is_zero_mac(&attr->rmac)) { | |
764 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
765 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
766 | ecom_rmac.size = 1; | |
767 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
768 | attr->ecommunity = |
769 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 770 | } |
771 | ||
772 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
773 | } | |
774 | ||
128ea8ab | 775 | /* |
1ec31309 | 776 | * Build extended communities for EVPN route. |
777 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
778 | * and ENCAP extended communities are applicable for all routes. | |
779 | * The default gateway extended community and MAC mobility (sticky) extended | |
780 | * community are added as needed based on passed settings - only for type-2 | |
781 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
782 | * added, if present, based on passed settings - only for non-link-local | |
783 | * type-2 routes. | |
128ea8ab | 784 | */ |
7ec156a9 | 785 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 786 | int add_l3_ecomm) |
128ea8ab | 787 | { |
d62a17ae | 788 | struct ecommunity ecom_encap; |
789 | struct ecommunity ecom_sticky; | |
ead40654 | 790 | struct ecommunity ecom_default_gw; |
bc59a672 | 791 | struct ecommunity ecom_rmac; |
68e33151 | 792 | struct ecommunity ecom_na; |
d62a17ae | 793 | struct ecommunity_val eval; |
794 | struct ecommunity_val eval_sticky; | |
ead40654 | 795 | struct ecommunity_val eval_default_gw; |
bc59a672 | 796 | struct ecommunity_val eval_rmac; |
68e33151 CS |
797 | struct ecommunity_val eval_na; |
798 | ||
d62a17ae | 799 | bgp_encap_types tnl_type; |
800 | struct listnode *node, *nnode; | |
801 | struct ecommunity *ecom; | |
d7c0a89a | 802 | uint32_t seqnum; |
7a3e76f1 | 803 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 804 | |
d62a17ae | 805 | /* Encap */ |
806 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
807 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
808 | encode_encap_extcomm(tnl_type, &eval); | |
809 | ecom_encap.size = 1; | |
d7c0a89a | 810 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 811 | |
d62a17ae | 812 | /* Add Encap */ |
813 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 814 | |
7a3e76f1 | 815 | /* Add the export RTs for L2VNI */ |
d62a17ae | 816 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
817 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 818 | |
1ec31309 | 819 | /* Add the export RTs for L3VNI if told to - caller determines |
820 | * when this should be done. | |
523cafc4 | 821 | */ |
1ec31309 | 822 | if (add_l3_ecomm) { |
7ec156a9 MK |
823 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
824 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
825 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
826 | ecom)) | |
996c9314 LB |
827 | attr->ecommunity = ecommunity_merge( |
828 | attr->ecommunity, ecom); | |
7ec156a9 | 829 | } |
f1f8b53c | 830 | } |
7a3e76f1 | 831 | |
1ec31309 | 832 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 833 | if (attr->sticky) { |
834 | seqnum = 0; | |
835 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
836 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
837 | ecom_sticky.size = 1; | |
d7c0a89a | 838 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 839 | attr->ecommunity = |
840 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
841 | } | |
c85c03c7 | 842 | |
1ec31309 | 843 | /* Add RMAC, if told to. */ |
844 | if (add_l3_ecomm) { | |
bc59a672 MK |
845 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
846 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
847 | ecom_rmac.size = 1; | |
848 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
849 | attr->ecommunity = |
850 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
851 | } |
852 | ||
1ec31309 | 853 | /* Add default gateway, if needed. */ |
ead40654 MK |
854 | if (attr->default_gw) { |
855 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
856 | encode_default_gw_extcomm(&eval_default_gw); | |
857 | ecom_default_gw.size = 1; | |
858 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
859 | attr->ecommunity = |
860 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
861 | } |
862 | ||
68e33151 CS |
863 | if (attr->router_flag) { |
864 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
865 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
866 | ecom_na.size = 1; | |
867 | ecom_na.val = (uint8_t *)eval_na.val; | |
868 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
869 | &ecom_na); | |
870 | } | |
871 | ||
d62a17ae | 872 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 873 | } |
874 | ||
875 | /* | |
876 | * Add MAC mobility extended community to attribute. | |
877 | */ | |
d7c0a89a | 878 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 879 | { |
880 | struct ecommunity ecom_tmp; | |
881 | struct ecommunity_val eval; | |
d7c0a89a | 882 | uint8_t *ecom_val_ptr; |
d62a17ae | 883 | int i; |
d7c0a89a | 884 | uint8_t *pnt; |
d62a17ae | 885 | int type = 0; |
886 | int sub_type = 0; | |
887 | ||
888 | /* Build MM */ | |
889 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
890 | ||
891 | /* Find current MM ecommunity */ | |
421bb26a | 892 | ecom_val_ptr = NULL; |
d62a17ae | 893 | |
894 | if (attr->ecommunity) { | |
895 | for (i = 0; i < attr->ecommunity->size; i++) { | |
896 | pnt = attr->ecommunity->val + (i * 8); | |
897 | type = *pnt++; | |
898 | sub_type = *pnt++; | |
899 | ||
900 | if (type == ECOMMUNITY_ENCODE_EVPN | |
901 | && sub_type | |
902 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
903 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
904 | + (i * 8)); | |
d62a17ae | 905 | break; |
906 | } | |
907 | } | |
908 | } | |
909 | ||
910 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
911 | if (ecom_val_ptr) { |
912 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 913 | } |
914 | /* Add MM to existing */ | |
915 | else { | |
916 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
917 | ecom_tmp.size = 1; | |
d7c0a89a | 918 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 919 | |
f9a78910 DS |
920 | if (attr->ecommunity) |
921 | attr->ecommunity = | |
922 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
923 | else | |
924 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 925 | } |
128ea8ab | 926 | } |
927 | ||
928 | /* Install EVPN route into zebra. */ | |
d62a17ae | 929 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
d594a14c | 930 | struct prefix_evpn *p, struct bgp_path_info *pi) |
128ea8ab | 931 | { |
d62a17ae | 932 | int ret; |
d594a14c | 933 | uint8_t flags; |
b16dd019 | 934 | int flood_control; |
128ea8ab | 935 | |
d594a14c AK |
936 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
937 | flags = 0; | |
938 | if (pi->attr->sticky) | |
939 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
940 | if (pi->attr->default_gw) | |
941 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
942 | if (is_evpn_prefix_ipaddr_v6(p) && | |
943 | pi->attr->router_flag) | |
944 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
945 | ret = bgp_zebra_send_remote_macip( | |
946 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
947 | mac_mobility_seqnum(pi->attr)); | |
948 | } else { | |
b16dd019 AK |
949 | switch (pi->attr->pmsi_tnl_type) { |
950 | case PMSI_TNLTYPE_INGR_REPL: | |
951 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
952 | break; | |
953 | ||
954 | case PMSI_TNLTYPE_PIM_SM: | |
955 | flood_control = VXLAN_FLOOD_PIM_SM; | |
956 | break; | |
957 | ||
958 | default: | |
959 | flood_control = VXLAN_FLOOD_DISABLED; | |
960 | break; | |
961 | } | |
962 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 963 | } |
128ea8ab | 964 | |
d62a17ae | 965 | return ret; |
128ea8ab | 966 | } |
967 | ||
968 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 969 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
970 | struct prefix_evpn *p, | |
971 | struct in_addr remote_vtep_ip) | |
128ea8ab | 972 | { |
d62a17ae | 973 | int ret; |
128ea8ab | 974 | |
d62a17ae | 975 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
976 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 977 | 0, 0, 0); |
d62a17ae | 978 | else |
b16dd019 AK |
979 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
980 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 981 | |
d62a17ae | 982 | return ret; |
128ea8ab | 983 | } |
984 | ||
985 | /* | |
986 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
987 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
988 | * from peers. | |
989 | */ | |
d62a17ae | 990 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
991 | struct bgp_node *rn, | |
4b7e6066 | 992 | struct bgp_path_info *old_local) |
128ea8ab | 993 | { |
d62a17ae | 994 | struct bgp_node *global_rn; |
40381db7 | 995 | struct bgp_path_info *pi; |
d62a17ae | 996 | afi_t afi = AFI_L2VPN; |
997 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 998 | |
d62a17ae | 999 | /* Locate route node in the global EVPN routing table. Note that |
1000 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1001 | * L3VPN routes. | |
1002 | */ | |
1003 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1004 | (struct prefix *)&rn->p, &vpn->prd); | |
1005 | if (global_rn) { | |
1006 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1007 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 1008 | |
d62a17ae | 1009 | /* Schedule for processing - withdraws to peers happen from |
1010 | * this table. | |
1011 | */ | |
40381db7 | 1012 | if (pi) |
d62a17ae | 1013 | bgp_process(bgp, global_rn, afi, safi); |
1014 | bgp_unlock_node(global_rn); | |
1015 | } | |
128ea8ab | 1016 | |
d62a17ae | 1017 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 1018 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 1019 | } |
1020 | ||
50f74cf1 | 1021 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
1022 | { | |
1023 | struct in_addr *ip; | |
1024 | ||
1025 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 1026 | |
1027 | ip->s_addr = vtep.s_addr; | |
1028 | return ip; | |
1029 | } | |
1030 | ||
1031 | static void es_vtep_free(struct in_addr *ip) | |
1032 | { | |
1033 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
1034 | } | |
1035 | ||
1036 | /* check if VTEP is already part of the list */ | |
1037 | static int is_vtep_present_in_list(struct list *list, | |
1038 | struct in_addr vtep) | |
1039 | { | |
1040 | struct listnode *node = NULL; | |
1041 | struct in_addr *tmp; | |
1042 | ||
1043 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
1044 | if (tmp->s_addr == vtep.s_addr) | |
1045 | return 1; | |
1046 | } | |
1047 | return 0; | |
1048 | } | |
1049 | ||
2bb9eff4 DS |
1050 | /* |
1051 | * Best path for ES route was changed, | |
1052 | * update the list of VTEPs for this ES | |
1053 | */ | |
50f74cf1 | 1054 | static int evpn_es_install_vtep(struct bgp *bgp, |
1055 | struct evpnes *es, | |
1056 | struct prefix_evpn *p, | |
1057 | struct in_addr rvtep) | |
1058 | { | |
1059 | struct in_addr *vtep_ip; | |
1060 | ||
1061 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1062 | return 0; | |
1063 | ||
1064 | ||
1065 | vtep_ip = es_vtep_new(rvtep); | |
1066 | if (vtep_ip) | |
1067 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1068 | return 0; | |
1069 | } | |
1070 | ||
2bb9eff4 DS |
1071 | /* |
1072 | * Best path for ES route was changed, | |
1073 | * update the list of VTEPs for this ES | |
1074 | */ | |
50f74cf1 | 1075 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1076 | struct evpnes *es, | |
1077 | struct prefix_evpn *p, | |
1078 | struct in_addr rvtep) | |
1079 | { | |
1080 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1081 | struct in_addr *tmp; | |
1082 | ||
1083 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1084 | if (tmp->s_addr == rvtep.s_addr) { | |
1085 | es_vtep_free(tmp); | |
1086 | node_to_del = node; | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | if (node_to_del) | |
1091 | list_delete_node(es->vtep_list, node_to_del); | |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | /* | |
1097 | * Calculate the best path for a ES(type-4) route. | |
1098 | */ | |
1099 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1100 | struct evpnes *es, | |
1101 | struct bgp_node *rn) | |
1102 | { | |
1103 | int ret = 0; | |
1104 | afi_t afi = AFI_L2VPN; | |
1105 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1106 | struct bgp_path_info *old_select; /* old best */ |
1107 | struct bgp_path_info *new_select; /* new best */ | |
1108 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1109 | |
1110 | /* Compute the best path. */ | |
1111 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1112 | &old_and_new, afi, safi); | |
1113 | old_select = old_and_new.old; | |
1114 | new_select = old_and_new.new; | |
1115 | ||
2bb9eff4 DS |
1116 | /* |
1117 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1118 | * updated |
1119 | */ | |
1120 | if (old_select && old_select == new_select | |
1121 | && old_select->type == ZEBRA_ROUTE_BGP | |
1122 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1123 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1124 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1125 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
50f74cf1 | 1126 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1127 | ret = evpn_es_install_vtep(bgp, es, | |
1128 | (struct prefix_evpn *)&rn->p, | |
1129 | old_select->attr->nexthop); | |
1130 | } | |
1defdda8 | 1131 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1132 | bgp_zebra_clear_route_change_flags(rn); |
1133 | return ret; | |
1134 | } | |
1135 | ||
1136 | /* If the user did a "clear" this flag will be set */ | |
1137 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1138 | ||
2bb9eff4 DS |
1139 | /* |
1140 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1141 | * into the zebra RIB. |
1142 | */ | |
1143 | if (old_select || new_select) | |
1144 | bgp_bump_version(rn); | |
1145 | ||
1146 | if (old_select) | |
18ee8310 | 1147 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1148 | if (new_select) { |
18ee8310 DS |
1149 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1150 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1151 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1152 | } |
1153 | ||
1154 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1155 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1156 | ret = evpn_es_install_vtep(bgp, es, | |
1157 | (struct prefix_evpn *)&rn->p, | |
1158 | new_select->attr->nexthop); | |
1159 | } else { | |
1160 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1161 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1162 | ret = evpn_es_uninstall_vtep( |
1163 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1164 | old_select->attr->nexthop); | |
50f74cf1 | 1165 | } |
1166 | ||
1167 | /* Clear any route change flags. */ | |
1168 | bgp_zebra_clear_route_change_flags(rn); | |
1169 | ||
18ee8310 | 1170 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1171 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1172 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1173 | |
1174 | return ret; | |
1175 | } | |
1176 | ||
128ea8ab | 1177 | /* |
1178 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1179 | * if appropriate. | |
1180 | */ | |
d62a17ae | 1181 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1182 | struct bgp_node *rn) | |
1183 | { | |
4b7e6066 DS |
1184 | struct bgp_path_info *old_select, *new_select; |
1185 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1186 | afi_t afi = AFI_L2VPN; |
1187 | safi_t safi = SAFI_EVPN; | |
1188 | int ret = 0; | |
1189 | ||
1190 | /* Compute the best path. */ | |
1191 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1192 | afi, safi); | |
1193 | old_select = old_and_new.old; | |
1194 | new_select = old_and_new.new; | |
1195 | ||
1196 | /* If the best path hasn't changed - see if there is still something to | |
1197 | * update | |
1198 | * to zebra RIB. | |
1199 | */ | |
1200 | if (old_select && old_select == new_select | |
1201 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1202 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1203 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1204 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1205 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
d594a14c | 1206 | if (bgp_zebra_has_route_changed(rn, old_select)) |
996c9314 LB |
1207 | ret = evpn_zebra_install( |
1208 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
d594a14c | 1209 | old_select); |
1defdda8 | 1210 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1211 | bgp_zebra_clear_route_change_flags(rn); |
1212 | return ret; | |
1213 | } | |
1214 | ||
1215 | /* If the user did a "clear" this flag will be set */ | |
1216 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1217 | ||
1218 | /* bestpath has changed; update relevant fields and install or uninstall | |
1219 | * into the zebra RIB. | |
1220 | */ | |
1221 | if (old_select || new_select) | |
1222 | bgp_bump_version(rn); | |
1223 | ||
1224 | if (old_select) | |
18ee8310 | 1225 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1226 | if (new_select) { |
18ee8310 DS |
1227 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1228 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1229 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1230 | } |
1231 | ||
1232 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1233 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
d62a17ae | 1234 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
d594a14c AK |
1235 | new_select); |
1236 | ||
d62a17ae | 1237 | /* If an old best existed and it was a "local" route, the only |
1238 | * reason | |
1239 | * it would be supplanted is due to MAC mobility procedures. So, | |
1240 | * we | |
1241 | * need to do an implicit delete and withdraw that route from | |
1242 | * peers. | |
1243 | */ | |
1244 | if (old_select && old_select->peer == bgp->peer_self | |
1245 | && old_select->type == ZEBRA_ROUTE_BGP | |
1246 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1247 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1248 | } else { | |
1249 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1250 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1251 | ret = evpn_zebra_uninstall(bgp, vpn, |
1252 | (struct prefix_evpn *)&rn->p, | |
1253 | old_select->attr->nexthop); | |
1254 | } | |
1255 | ||
1256 | /* Clear any route change flags. */ | |
1257 | bgp_zebra_clear_route_change_flags(rn); | |
1258 | ||
18ee8310 | 1259 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1260 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1261 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1262 | |
1263 | return ret; | |
128ea8ab | 1264 | } |
1265 | ||
ead40654 MK |
1266 | /* |
1267 | * Return true if the local ri for this rn is of type gateway mac | |
1268 | */ | |
1269 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1270 | { | |
40381db7 DS |
1271 | struct bgp_path_info *tmp_pi = NULL; |
1272 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1273 | |
40381db7 | 1274 | local_pi = NULL; |
6f94b685 DS |
1275 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1276 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1277 | if (tmp_pi->peer == bgp->peer_self |
1278 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1279 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1280 | local_pi = tmp_pi; | |
ead40654 MK |
1281 | } |
1282 | ||
40381db7 | 1283 | if (!local_pi) |
ead40654 MK |
1284 | return 0; |
1285 | ||
40381db7 | 1286 | return local_pi->attr->default_gw; |
ead40654 MK |
1287 | } |
1288 | ||
c85c03c7 | 1289 | |
1290 | /* | |
1291 | * Return true if the local ri for this rn has sticky set | |
1292 | */ | |
d62a17ae | 1293 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1294 | { |
40381db7 DS |
1295 | struct bgp_path_info *tmp_pi; |
1296 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1297 | |
40381db7 | 1298 | local_pi = NULL; |
6f94b685 DS |
1299 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1300 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1301 | if (tmp_pi->peer == bgp->peer_self |
1302 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1303 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1304 | local_pi = tmp_pi; | |
d62a17ae | 1305 | } |
c85c03c7 | 1306 | |
40381db7 | 1307 | if (!local_pi) |
d62a17ae | 1308 | return 0; |
c85c03c7 | 1309 | |
40381db7 | 1310 | return local_pi->attr->sticky; |
c85c03c7 | 1311 | } |
1312 | ||
50f74cf1 | 1313 | /* |
1314 | * create or update EVPN type4 route entry. | |
1315 | * This could be in the ES table or the global table. | |
1316 | * TODO: handle remote ES (type4) routes as well | |
1317 | */ | |
4b7e6066 | 1318 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1319 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1320 | struct bgp_node *rn, struct attr *attr, |
1321 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1322 | int *route_changed) |
1323 | { | |
1324 | char buf[ESI_STR_LEN]; | |
1325 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1326 | struct bgp_path_info *tmp_pi = NULL; |
1327 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1328 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1329 | struct attr *attr_new = NULL; |
1330 | struct prefix_evpn *evp = NULL; | |
1331 | ||
1332 | *ri = NULL; | |
1333 | *route_changed = 1; | |
1334 | evp = (struct prefix_evpn *)&rn->p; | |
1335 | ||
1336 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1337 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1338 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1339 | if (tmp_pi->peer == bgp->peer_self |
1340 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1341 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1342 | local_pi = tmp_pi; | |
1343 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1344 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1345 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1346 | remote_pi = tmp_pi; | |
50f74cf1 | 1347 | } |
1348 | ||
6f94b685 | 1349 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1350 | * An ES route has esi + vtep_ip as the key, |
1351 | * We shouldn't see the same route from any other vtep. | |
1352 | */ | |
40381db7 | 1353 | if (remote_pi) { |
af4c2728 | 1354 | flog_err( |
e50f7cfd | 1355 | EC_BGP_ES_INVALID, |
14454c9f DS |
1356 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1357 | bgp->vrf_id, | |
1358 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1359 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1360 | return -1; |
1361 | } | |
1362 | ||
40381db7 | 1363 | if (!local_pi && !add) |
50f74cf1 | 1364 | return 0; |
1365 | ||
1366 | /* create or update the entry */ | |
40381db7 | 1367 | if (!local_pi) { |
50f74cf1 | 1368 | |
1369 | /* Add or update attribute to hash */ | |
1370 | attr_new = bgp_attr_intern(attr); | |
1371 | ||
1372 | /* Create new route with its attribute. */ | |
40381db7 DS |
1373 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1374 | bgp->peer_self, attr_new, rn); | |
1375 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1376 | |
1377 | /* add the newly created path to the route-node */ | |
40381db7 | 1378 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1379 | } else { |
40381db7 DS |
1380 | tmp_pi = local_pi; |
1381 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1382 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1383 | *route_changed = 0; |
1384 | else { | |
1385 | /* The attribute has changed. | |
1386 | * Add (or update) attribute to hash. */ | |
1387 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1388 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1389 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1390 | |
1391 | /* Restore route, if needed. */ | |
40381db7 DS |
1392 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1393 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1394 | |
1395 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1396 | bgp_attr_unintern(&tmp_pi->attr); |
1397 | tmp_pi->attr = attr_new; | |
1398 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1399 | } |
1400 | } | |
1401 | ||
1402 | /* Return back the route entry. */ | |
40381db7 | 1403 | *ri = tmp_pi; |
50f74cf1 | 1404 | return 0; |
1405 | } | |
1406 | ||
1407 | /* update evpn es (type-4) route */ | |
1408 | static int update_evpn_type4_route(struct bgp *bgp, | |
1409 | struct evpnes *es, | |
1410 | struct prefix_evpn *p) | |
1411 | { | |
1412 | int ret = 0; | |
1413 | int route_changed = 0; | |
1414 | char buf[ESI_STR_LEN]; | |
1415 | char buf1[INET6_ADDRSTRLEN]; | |
1416 | afi_t afi = AFI_L2VPN; | |
1417 | safi_t safi = SAFI_EVPN; | |
1418 | struct attr attr; | |
1419 | struct attr *attr_new = NULL; | |
1420 | struct bgp_node *rn = NULL; | |
40381db7 | 1421 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1422 | |
1423 | memset(&attr, 0, sizeof(struct attr)); | |
1424 | ||
1425 | /* Build path-attribute for this route. */ | |
1426 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1427 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1428 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1429 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1430 | ||
1431 | /* Set up extended community. */ | |
1432 | build_evpn_type4_route_extcomm(es, &attr); | |
1433 | ||
1434 | /* First, create (or fetch) route node within the ESI. */ | |
1435 | /* NOTE: There is no RD here. */ | |
1436 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1437 | ||
1438 | /* Create or update route entry. */ | |
40381db7 DS |
1439 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1440 | &pi, &route_changed); | |
50f74cf1 | 1441 | if (ret != 0) { |
1c50c1c0 QY |
1442 | flog_err(EC_BGP_ES_INVALID, |
1443 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1444 | bgp->vrf_id, | |
1445 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1446 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1447 | } |
1448 | ||
40381db7 DS |
1449 | assert(pi); |
1450 | attr_new = pi->attr; | |
50f74cf1 | 1451 | |
1452 | /* Perform route selection; | |
1453 | * this is just to set the flags correctly | |
1454 | * as local route in the ES always wins. | |
1455 | */ | |
1456 | evpn_es_route_select_install(bgp, es, rn); | |
1457 | bgp_unlock_node(rn); | |
1458 | ||
1459 | /* If this is a new route or some attribute has changed, export the | |
1460 | * route to the global table. The route will be advertised to peers | |
1461 | * from there. Note that this table is a 2-level tree (RD-level + | |
1462 | * Prefix-level) similar to L3VPN routes. | |
1463 | */ | |
1464 | if (route_changed) { | |
40381db7 | 1465 | struct bgp_path_info *global_pi; |
50f74cf1 | 1466 | |
1467 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1468 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1469 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1470 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1471 | |
1472 | /* Schedule for processing and unlock node. */ | |
1473 | bgp_process(bgp, rn, afi, safi); | |
1474 | bgp_unlock_node(rn); | |
1475 | } | |
1476 | ||
1477 | /* Unintern temporary. */ | |
1478 | aspath_unintern(&attr.aspath); | |
1479 | return 0; | |
1480 | } | |
1481 | ||
5e53dce3 | 1482 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1483 | struct bgp *bgp_vrf, afi_t afi, |
1484 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1485 | struct attr *attr, int *route_changed) |
342dd0c6 | 1486 | { |
1487 | struct attr *attr_new = NULL; | |
40381db7 | 1488 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1489 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1490 | struct bgp_path_info *local_pi = NULL; |
1491 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1492 | |
5424b7ba | 1493 | *route_changed = 0; |
342dd0c6 | 1494 | /* locate the local route entry if any */ |
6f94b685 DS |
1495 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1496 | tmp_pi = tmp_pi->next) { | |
5e53dce3 | 1497 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1498 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1499 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1500 | local_pi = tmp_pi; | |
342dd0c6 | 1501 | } |
1502 | ||
2bb9eff4 | 1503 | /* |
0437e105 | 1504 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1505 | * Otherwise see if route attr has changed |
523cafc4 | 1506 | */ |
40381db7 | 1507 | if (!local_pi) { |
342dd0c6 | 1508 | |
5424b7ba MK |
1509 | /* route has changed as this is the first entry */ |
1510 | *route_changed = 1; | |
1511 | ||
342dd0c6 | 1512 | /* Add (or update) attribute to hash. */ |
1513 | attr_new = bgp_attr_intern(attr); | |
1514 | ||
1515 | /* create the route info from attribute */ | |
40381db7 | 1516 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
5e53dce3 | 1517 | bgp_evpn->peer_self, attr_new, rn); |
40381db7 | 1518 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1519 | |
b57ba6d2 | 1520 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1521 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1522 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1523 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1524 | pi->extra->num_labels = 1; | |
342dd0c6 | 1525 | |
1526 | /* add the route entry to route node*/ | |
40381db7 | 1527 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1528 | } else { |
1529 | ||
40381db7 DS |
1530 | tmp_pi = local_pi; |
1531 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1532 | |
1533 | /* attribute changed */ | |
1534 | *route_changed = 1; | |
1535 | ||
342dd0c6 | 1536 | /* The attribute has changed. */ |
1537 | /* Add (or update) attribute to hash. */ | |
1538 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1539 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1540 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1541 | |
1542 | /* Restore route, if needed. */ | |
40381db7 DS |
1543 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1544 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1545 | |
1546 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1547 | bgp_attr_unintern(&tmp_pi->attr); |
1548 | tmp_pi->attr = attr_new; | |
1549 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1550 | } |
1551 | } | |
1552 | return 0; | |
1553 | } | |
1554 | ||
1555 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1556 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1557 | struct attr *src_attr) | |
342dd0c6 | 1558 | { |
1559 | afi_t afi = AFI_L2VPN; | |
1560 | safi_t safi = SAFI_EVPN; | |
1561 | struct attr attr; | |
1562 | struct bgp_node *rn = NULL; | |
5e53dce3 | 1563 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1564 | int route_changed = 0; |
342dd0c6 | 1565 | |
5e53dce3 T |
1566 | bgp_evpn = bgp_get_evpn(); |
1567 | if (!bgp_evpn) | |
faafdfa8 | 1568 | return 0; |
342dd0c6 | 1569 | |
2f69f6d3 | 1570 | /* Build path attribute for this route - use the source attr, if |
1571 | * present, else treat as locally originated. | |
1572 | */ | |
1573 | if (src_attr) | |
1574 | bgp_attr_dup(&attr, src_attr); | |
1575 | else { | |
1576 | memset(&attr, 0, sizeof(struct attr)); | |
1577 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1578 | } | |
5394a276 CS |
1579 | |
1580 | /* copy sys rmac */ | |
1581 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
1582 | /* Advertise Primary IP (PIP) is enabled, send individual | |
1583 | * IP (default instance router-id) as nexthop. | |
1584 | * PIP is disabled or vrr interface is not present | |
1585 | * use anycast-IP as nexthop. | |
1586 | */ | |
1587 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1588 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1589 | attr.nexthop = bgp_vrf->originator_ip; | |
1590 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1591 | } else { | |
1592 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { | |
1593 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1594 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1595 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1596 | if (bgp_debug_zebra(NULL)) { | |
1597 | char buf1[PREFIX_STRLEN]; | |
1598 | ||
1599 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1600 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1601 | prefix2str(evp, buf1, sizeof(buf1))); | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | if (bgp_debug_zebra(NULL)) { | |
1606 | char buf[ETHER_ADDR_STRLEN]; | |
1607 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1608 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1609 | |
1610 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1611 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1612 | prefix2str(evp, buf1, sizeof(buf1)), | |
1613 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1614 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1615 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1616 | } |
1617 | ||
342dd0c6 | 1618 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1619 | |
1620 | /* Setup RT and encap extended community */ | |
1621 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1622 | ||
1623 | /* get the route node in global table */ | |
5e53dce3 | 1624 | rn = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
996c9314 | 1625 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1626 | assert(rn); |
1627 | ||
1628 | /* create or update the route entry within the route node */ | |
5e53dce3 | 1629 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, rn, &attr, |
996c9314 | 1630 | &route_changed); |
342dd0c6 | 1631 | |
1632 | /* schedule for processing and unlock node */ | |
5424b7ba | 1633 | if (route_changed) { |
5e53dce3 | 1634 | bgp_process(bgp_evpn, rn, afi, safi); |
5424b7ba MK |
1635 | bgp_unlock_node(rn); |
1636 | } | |
342dd0c6 | 1637 | |
1638 | /* uninten temporary */ | |
5ee65f6f | 1639 | if (!src_attr) |
1640 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1641 | return 0; |
1642 | } | |
1643 | ||
128ea8ab | 1644 | /* |
1645 | * Create or update EVPN route entry. This could be in the VNI route table | |
1646 | * or the global route table. | |
1647 | */ | |
d62a17ae | 1648 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1649 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1650 | struct attr *attr, int add, |
40381db7 | 1651 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1652 | uint32_t seq) |
d62a17ae | 1653 | { |
40381db7 DS |
1654 | struct bgp_path_info *tmp_pi; |
1655 | struct bgp_path_info *local_pi; | |
d62a17ae | 1656 | struct attr *attr_new; |
b57ba6d2 | 1657 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1658 | uint32_t num_labels = 1; |
d62a17ae | 1659 | int route_change = 1; |
d7c0a89a | 1660 | uint8_t sticky = 0; |
b57ba6d2 | 1661 | struct prefix_evpn *evp; |
d62a17ae | 1662 | |
40381db7 | 1663 | *pi = NULL; |
b57ba6d2 MK |
1664 | evp = (struct prefix_evpn *)&rn->p; |
1665 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1666 | |
f07e1c99 | 1667 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1668 | local_pi = NULL; |
6f94b685 DS |
1669 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1670 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1671 | if (tmp_pi->peer == bgp->peer_self |
1672 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1673 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1674 | local_pi = tmp_pi; | |
d62a17ae | 1675 | } |
1676 | ||
1677 | /* If route doesn't exist already, create a new one, if told to. | |
1678 | * Otherwise act based on whether the attributes of the route have | |
1679 | * changed or not. | |
1680 | */ | |
40381db7 | 1681 | if (!local_pi && !add) |
d62a17ae | 1682 | return 0; |
1683 | ||
f07e1c99 | 1684 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1685 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1686 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1687 | |
40381db7 | 1688 | if (!local_pi) { |
d62a17ae | 1689 | /* Add (or update) attribute to hash. */ |
1690 | attr_new = bgp_attr_intern(attr); | |
1691 | ||
1692 | /* Extract MAC mobility sequence number, if any. */ | |
1693 | attr_new->mm_seqnum = | |
1694 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1695 | attr_new->sticky = sticky; | |
1696 | ||
1697 | /* Create new route with its attribute. */ | |
40381db7 | 1698 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1699 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1700 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1701 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1702 | |
1703 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1704 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1705 | |
1706 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1707 | * Only attach second label if we are advertising two labels for | |
1708 | * type-2 routes. | |
1709 | */ | |
996c9314 LB |
1710 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1711 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1712 | vni_t l3vni; |
1713 | ||
1714 | l3vni = bgpevpn_get_l3vni(vpn); | |
1715 | if (l3vni) { | |
1716 | vni2label(l3vni, &label[1]); | |
1717 | num_labels++; | |
1718 | } | |
1719 | } | |
d62a17ae | 1720 | |
40381db7 DS |
1721 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1722 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1723 | /* Mark route as self type-2 route */ |
1724 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1725 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
40381db7 | 1726 | bgp_path_info_add(rn, tmp_pi); |
d62a17ae | 1727 | } else { |
40381db7 DS |
1728 | tmp_pi = local_pi; |
1729 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1730 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1731 | route_change = 0; |
1732 | else { | |
c48d9f5f MK |
1733 | /* |
1734 | * The attributes have changed, type-2 routes needs to | |
1735 | * be advertised with right labels. | |
1736 | */ | |
1737 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1738 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1739 | && CHECK_FLAG(vpn->flags, | |
1740 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1741 | vni_t l3vni; |
1742 | ||
1743 | l3vni = bgpevpn_get_l3vni(vpn); | |
1744 | if (l3vni) { | |
1745 | vni2label(l3vni, &label[1]); | |
1746 | num_labels++; | |
1747 | } | |
1748 | } | |
40381db7 DS |
1749 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1750 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1751 | |
d62a17ae | 1752 | /* The attribute has changed. */ |
1753 | /* Add (or update) attribute to hash. */ | |
1754 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1755 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1756 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1757 | |
f07e1c99 | 1758 | /* Extract MAC mobility sequence number, if any. */ |
1759 | attr_new->mm_seqnum = | |
1760 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1761 | attr_new->sticky = sticky; | |
1762 | ||
d62a17ae | 1763 | /* Restore route, if needed. */ |
40381db7 DS |
1764 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1765 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1766 | |
1767 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1768 | bgp_attr_unintern(&tmp_pi->attr); |
1769 | tmp_pi->attr = attr_new; | |
1770 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1771 | } |
1772 | } | |
1773 | ||
1774 | /* Return back the route entry. */ | |
40381db7 | 1775 | *pi = tmp_pi; |
d62a17ae | 1776 | return route_change; |
128ea8ab | 1777 | } |
1778 | ||
ec0ab544 AK |
1779 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1780 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1781 | { | |
1782 | struct bgp_path_info *tmp_ri; | |
1783 | struct bgp_path_info *curr_select = NULL; | |
1784 | ||
1785 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1786 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1787 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1788 | curr_select = tmp_ri; | |
1789 | break; | |
1790 | } | |
1791 | } | |
1792 | ||
1793 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1794 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1795 | evpn_zebra_install(bgp, vpn, | |
1796 | (struct prefix_evpn *)&rn->p, | |
1797 | curr_select); | |
1798 | } | |
1799 | ||
6d8c603a AK |
1800 | /* |
1801 | * If the local route was not selected evict it and tell zebra to re-add | |
1802 | * the best remote dest. | |
1803 | * | |
1804 | * Typically a local path added by zebra is expected to be selected as | |
1805 | * best. In which case when a remote path wins as best (later) | |
1806 | * evpn_route_select_install itself evicts the older-local-best path. | |
1807 | * | |
1808 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1809 | * is possible that the local path is no longer the "older" best path. | |
1810 | * It is a path that was never designated as best and hence requires | |
1811 | * additional handling to prevent bgp from injecting and holding on to a | |
1812 | * non-best local path. | |
1813 | */ | |
1814 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1815 | struct bgpevpn *vpn, | |
1816 | struct bgp_node *rn, | |
9a8897aa | 1817 | struct bgp_path_info *local_pi) |
6d8c603a | 1818 | { |
6d8c603a AK |
1819 | char buf[PREFIX_STRLEN]; |
1820 | ||
6d8c603a AK |
1821 | /* local path was not picked as the winner; kick it out */ |
1822 | if (bgp_debug_zebra(NULL)) { | |
1823 | zlog_debug("evicting local evpn prefix %s as remote won", | |
1824 | prefix2str(&rn->p, buf, sizeof(buf))); | |
1825 | } | |
6d8c603a AK |
1826 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1827 | bgp_path_info_reap(rn, local_pi); | |
1828 | ||
1829 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1830 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1831 | } |
1832 | ||
128ea8ab | 1833 | /* |
1834 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1835 | * and schedule for processing. | |
1836 | */ | |
d62a17ae | 1837 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1838 | struct prefix_evpn *p, uint8_t flags, |
1839 | uint32_t seq) | |
128ea8ab | 1840 | { |
d62a17ae | 1841 | struct bgp_node *rn; |
1842 | struct attr attr; | |
1843 | struct attr *attr_new; | |
1ec31309 | 1844 | int add_l3_ecomm = 0; |
40381db7 | 1845 | struct bgp_path_info *pi; |
d62a17ae | 1846 | afi_t afi = AFI_L2VPN; |
1847 | safi_t safi = SAFI_EVPN; | |
1848 | int route_change; | |
128ea8ab | 1849 | |
d62a17ae | 1850 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1851 | |
d62a17ae | 1852 | /* Build path-attribute for this route. */ |
1853 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1854 | attr.nexthop = vpn->originator_ip; | |
1855 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1856 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1857 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1858 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1859 | attr.router_flag = CHECK_FLAG(flags, |
1860 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1861 | |
1862 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1863 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1864 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1865 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1866 | } | |
be41eb68 | 1867 | |
1ec31309 | 1868 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1869 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1870 | uint8_t af_flags = 0; | |
1871 | ||
1872 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1873 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1874 | ||
1875 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
1876 | ||
1877 | if (bgp_debug_zebra(NULL)) { | |
1878 | char buf[ETHER_ADDR_STRLEN]; | |
1879 | char buf1[PREFIX_STRLEN]; | |
1880 | ||
1881 | zlog_debug("VRF %s vni %u type-2 route evp %s RMAC %s nexthop %s", | |
1882 | vpn->bgp_vrf ? | |
1883 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1884 | vpn->vni, | |
1885 | prefix2str(p, buf1, sizeof(buf1)), | |
1886 | prefix_mac2str(&attr.rmac, buf, | |
1887 | sizeof(buf)), | |
1888 | inet_ntoa(attr.mp_nexthop_global_in)); | |
1889 | } | |
1890 | } | |
1891 | ||
a21bd7a3 | 1892 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1893 | |
1ec31309 | 1894 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1895 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1896 | * these routes. | |
1897 | */ | |
1898 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1899 | (is_evpn_prefix_ipaddr_v4(p) || |
1900 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1901 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1902 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1903 | add_l3_ecomm = 1; |
1904 | ||
1905 | /* Set up extended community. */ | |
1906 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1907 | |
d62a17ae | 1908 | /* First, create (or fetch) route node within the VNI. */ |
1909 | /* NOTE: There is no RD here. */ | |
1910 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1911 | |
d62a17ae | 1912 | /* Create or update route entry. */ |
1913 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1914 | 1, &pi, flags, seq); |
1915 | assert(pi); | |
1916 | attr_new = pi->attr; | |
128ea8ab | 1917 | |
6d8c603a AK |
1918 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1919 | bgp_path_info_lock(pi); | |
d62a17ae | 1920 | /* Perform route selection; this is just to set the flags correctly |
1921 | * as local route in the VNI always wins. | |
1922 | */ | |
1923 | evpn_route_select_install(bgp, vpn, rn); | |
6d8c603a | 1924 | /* |
9a8897aa AK |
1925 | * If the new local route was not selected evict it and tell zebra |
1926 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1927 | * routes. | |
6d8c603a | 1928 | */ |
9a8897aa AK |
1929 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1930 | route_change = 0; | |
1931 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1932 | } | |
6d8c603a AK |
1933 | bgp_path_info_unlock(pi); |
1934 | ||
d62a17ae | 1935 | bgp_unlock_node(rn); |
128ea8ab | 1936 | |
d62a17ae | 1937 | /* If this is a new route or some attribute has changed, export the |
1938 | * route to the global table. The route will be advertised to peers | |
1939 | * from there. Note that this table is a 2-level tree (RD-level + | |
1940 | * Prefix-level) similar to L3VPN routes. | |
1941 | */ | |
1942 | if (route_change) { | |
40381db7 | 1943 | struct bgp_path_info *global_pi; |
128ea8ab | 1944 | |
d62a17ae | 1945 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1946 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1947 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1948 | &global_pi, flags, seq); |
128ea8ab | 1949 | |
d62a17ae | 1950 | /* Schedule for processing and unlock node. */ |
1951 | bgp_process(bgp, rn, afi, safi); | |
1952 | bgp_unlock_node(rn); | |
1953 | } | |
128ea8ab | 1954 | |
d62a17ae | 1955 | /* Unintern temporary. */ |
1956 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1957 | |
d62a17ae | 1958 | return 0; |
128ea8ab | 1959 | } |
1960 | ||
50f74cf1 | 1961 | /* |
1962 | * Delete EVPN route entry. | |
1963 | * The entry can be in ESI/VNI table or the global table. | |
1964 | */ | |
4b7e6066 | 1965 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1966 | struct bgp_node *rn, |
40381db7 | 1967 | struct bgp_path_info **pi) |
342dd0c6 | 1968 | { |
40381db7 | 1969 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1970 | |
40381db7 | 1971 | *pi = NULL; |
342dd0c6 | 1972 | |
50f74cf1 | 1973 | /* Now, find matching route. */ |
6f94b685 DS |
1974 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1975 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1976 | if (tmp_pi->peer == bgp->peer_self |
1977 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1978 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1979 | break; |
1980 | ||
40381db7 | 1981 | *pi = tmp_pi; |
342dd0c6 | 1982 | |
1983 | /* Mark route for delete. */ | |
40381db7 DS |
1984 | if (tmp_pi) |
1985 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1986 | } |
1987 | ||
50f74cf1 | 1988 | |
1989 | ||
1990 | /* Delete EVPN ES (type-4) route */ | |
1991 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1992 | struct evpnes *es, | |
1993 | struct prefix_evpn *p) | |
1994 | { | |
1995 | afi_t afi = AFI_L2VPN; | |
1996 | safi_t safi = SAFI_EVPN; | |
40381db7 | 1997 | struct bgp_path_info *pi; |
50f74cf1 | 1998 | struct bgp_node *rn = NULL; /* rn in esi table */ |
1999 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
2000 | ||
2001 | /* First, locate the route node within the ESI. | |
2002 | * If it doesn't exist, ther is nothing to do. | |
2003 | * Note: there is no RD here. | |
2004 | */ | |
2005 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 2006 | if (!rn) |
50f74cf1 | 2007 | return 0; |
2008 | ||
2009 | /* Next, locate route node in the global EVPN routing table. | |
2010 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
2011 | */ | |
2012 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2013 | (struct prefix *)p, &es->prd); | |
2014 | if (global_rn) { | |
2015 | ||
2016 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2017 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 2018 | |
2019 | /* Schedule for processing - withdraws to peers happen from | |
2020 | * this table. | |
2021 | */ | |
40381db7 | 2022 | if (pi) |
50f74cf1 | 2023 | bgp_process(bgp, global_rn, afi, safi); |
2024 | bgp_unlock_node(global_rn); | |
2025 | } | |
2026 | ||
2027 | /* | |
2028 | * Delete route entry in the ESI route table. | |
2029 | * This can just be removed. | |
2030 | */ | |
40381db7 DS |
2031 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2032 | if (pi) | |
2033 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2034 | bgp_unlock_node(rn); |
2035 | return 0; | |
2036 | } | |
2037 | ||
342dd0c6 | 2038 | /* Delete EVPN type5 route */ |
996c9314 | 2039 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2040 | { |
2041 | afi_t afi = AFI_L2VPN; | |
2042 | safi_t safi = SAFI_EVPN; | |
2043 | struct bgp_node *rn = NULL; | |
40381db7 | 2044 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2045 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2046 | |
5e53dce3 T |
2047 | bgp_evpn = bgp_get_evpn(); |
2048 | if (!bgp_evpn) | |
faafdfa8 | 2049 | return 0; |
342dd0c6 | 2050 | |
2051 | /* locate the global route entry for this type-5 prefix */ | |
5e53dce3 | 2052 | rn = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
342dd0c6 | 2053 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
2054 | if (!rn) | |
2055 | return 0; | |
2056 | ||
5e53dce3 | 2057 | delete_evpn_route_entry(bgp_evpn, afi, safi, rn, &pi); |
40381db7 | 2058 | if (pi) |
5e53dce3 | 2059 | bgp_process(bgp_evpn, rn, afi, safi); |
342dd0c6 | 2060 | bgp_unlock_node(rn); |
2061 | return 0; | |
2062 | } | |
2063 | ||
128ea8ab | 2064 | /* |
2065 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2066 | * schedule for processing. | |
2067 | */ | |
d62a17ae | 2068 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2069 | struct prefix_evpn *p) | |
2070 | { | |
2071 | struct bgp_node *rn, *global_rn; | |
40381db7 | 2072 | struct bgp_path_info *pi; |
d62a17ae | 2073 | afi_t afi = AFI_L2VPN; |
2074 | safi_t safi = SAFI_EVPN; | |
2075 | ||
2076 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2077 | * there | |
2078 | * is nothing further to do. | |
2079 | */ | |
2080 | /* NOTE: There is no RD here. */ | |
2081 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2082 | if (!rn) | |
2083 | return 0; | |
2084 | ||
2085 | /* Next, locate route node in the global EVPN routing table. Note that | |
2086 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2087 | * L3VPN routes. | |
2088 | */ | |
2089 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2090 | (struct prefix *)p, &vpn->prd); | |
2091 | if (global_rn) { | |
2092 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2093 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 2094 | |
2095 | /* Schedule for processing - withdraws to peers happen from | |
2096 | * this table. | |
2097 | */ | |
40381db7 | 2098 | if (pi) |
d62a17ae | 2099 | bgp_process(bgp, global_rn, afi, safi); |
2100 | bgp_unlock_node(global_rn); | |
2101 | } | |
2102 | ||
2103 | /* Delete route entry in the VNI route table. This can just be removed. | |
2104 | */ | |
40381db7 | 2105 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 2106 | if (pi) { |
40381db7 | 2107 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
2108 | evpn_route_select_install(bgp, vpn, rn); |
2109 | } | |
d62a17ae | 2110 | bgp_unlock_node(rn); |
2111 | ||
2112 | return 0; | |
128ea8ab | 2113 | } |
2114 | ||
2115 | /* | |
2116 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2117 | * be scheduled for advertise to peers. | |
2118 | */ | |
d62a17ae | 2119 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2120 | { | |
2121 | afi_t afi; | |
2122 | safi_t safi; | |
2123 | struct bgp_node *rn; | |
40381db7 | 2124 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2125 | struct attr attr; |
d62a17ae | 2126 | struct attr *attr_new; |
f07e1c99 | 2127 | uint32_t seq; |
1ec31309 | 2128 | int add_l3_ecomm = 0; |
d62a17ae | 2129 | |
2130 | afi = AFI_L2VPN; | |
2131 | safi = SAFI_EVPN; | |
d62a17ae | 2132 | |
2133 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2134 | * routes updated, update corresponding entry in the global table too. | |
2135 | */ | |
2136 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2137 | rn = bgp_route_next(rn)) { | |
2138 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2139 | struct bgp_node *rd_rn; | |
40381db7 | 2140 | struct bgp_path_info *global_pi; |
d62a17ae | 2141 | |
2142 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2143 | continue; | |
2144 | ||
f07e1c99 | 2145 | /* Identify local route. */ |
6f94b685 DS |
2146 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2147 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2148 | if (tmp_pi->peer == bgp->peer_self |
2149 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2150 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2151 | break; |
7ec156a9 | 2152 | } |
d62a17ae | 2153 | |
40381db7 | 2154 | if (!tmp_pi) |
d62a17ae | 2155 | continue; |
2156 | ||
f07e1c99 | 2157 | /* |
2158 | * Build attribute per local route as the MAC mobility and | |
2159 | * some other values could differ for different routes. The | |
2160 | * attributes will be shared in the hash table. | |
2161 | */ | |
2162 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2163 | attr.nexthop = vpn->originator_ip; | |
2164 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2165 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
0ca10580 CS |
2166 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, |
2167 | tmp_pi->extra->af_flags); | |
f07e1c99 | 2168 | |
2169 | if (evpn_route_is_sticky(bgp, rn)) | |
2170 | attr.sticky = 1; | |
2171 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2172 | attr.default_gw = 1; | |
2173 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2174 | attr.router_flag = 1; | |
2175 | } | |
2176 | ||
0ca10580 CS |
2177 | if (bgp_debug_zebra(NULL)) { |
2178 | char buf[ETHER_ADDR_STRLEN]; | |
2179 | char buf1[PREFIX_STRLEN]; | |
2180 | ||
2181 | zlog_debug("VRF %s vni %u evp %s RMAC %s nexthop %s", | |
2182 | vpn->bgp_vrf ? | |
2183 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
2184 | vpn->vni, | |
2185 | prefix2str(evp, buf1, sizeof(buf1)), | |
2186 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
2187 | inet_ntoa(attr.mp_nexthop_global_in)); | |
2188 | } | |
2189 | ||
f07e1c99 | 2190 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if |
2191 | * using L3 VNI for type-2 routes also. | |
2192 | */ | |
2193 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2194 | !IN6_IS_ADDR_LINKLOCAL( |
2195 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2196 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2197 | bgpevpn_get_l3vni(vpn)) | |
2198 | add_l3_ecomm = 1; | |
2199 | ||
2200 | /* Set up extended community. */ | |
2201 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2202 | ||
40381db7 | 2203 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2204 | |
2205 | /* Update the route entry. */ | |
40381db7 DS |
2206 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2207 | 0, seq); | |
f07e1c99 | 2208 | |
d62a17ae | 2209 | /* Perform route selection; this is just to set the flags |
f07e1c99 | 2210 | * correctly as local route in the VNI always wins. |
d62a17ae | 2211 | */ |
2212 | evpn_route_select_install(bgp, vpn, rn); | |
2213 | ||
40381db7 | 2214 | attr_new = pi->attr; |
d62a17ae | 2215 | |
2216 | /* Update route in global routing table. */ | |
2217 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2218 | (struct prefix *)evp, &vpn->prd); | |
2219 | assert(rd_rn); | |
2220 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
40381db7 | 2221 | &global_pi, 0, |
f07e1c99 | 2222 | mac_mobility_seqnum(attr_new)); |
d62a17ae | 2223 | |
2224 | /* Schedule for processing and unlock node. */ | |
2225 | bgp_process(bgp, rd_rn, afi, safi); | |
2226 | bgp_unlock_node(rd_rn); | |
d62a17ae | 2227 | |
f07e1c99 | 2228 | /* Unintern temporary. */ |
2229 | aspath_unintern(&attr.aspath); | |
2230 | ||
2231 | } | |
d62a17ae | 2232 | |
2233 | return 0; | |
128ea8ab | 2234 | } |
2235 | ||
2236 | /* | |
2237 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2238 | * global routing table. These are also scheduled for withdraw from peers. | |
2239 | */ | |
d62a17ae | 2240 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2241 | { |
d62a17ae | 2242 | afi_t afi; |
2243 | safi_t safi; | |
2244 | struct bgp_node *rdrn, *rn; | |
2245 | struct bgp_table *table; | |
40381db7 | 2246 | struct bgp_path_info *pi; |
128ea8ab | 2247 | |
d62a17ae | 2248 | afi = AFI_L2VPN; |
2249 | safi = SAFI_EVPN; | |
128ea8ab | 2250 | |
d62a17ae | 2251 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2252 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2253 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2254 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2255 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2256 | |
d62a17ae | 2257 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2258 | continue; | |
128ea8ab | 2259 | |
40381db7 DS |
2260 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2261 | if (pi) | |
d62a17ae | 2262 | bgp_process(bgp, rn, afi, safi); |
2263 | } | |
2264 | } | |
128ea8ab | 2265 | |
d62a17ae | 2266 | /* Unlock RD node. */ |
2267 | if (rdrn) | |
2268 | bgp_unlock_node(rdrn); | |
128ea8ab | 2269 | |
d62a17ae | 2270 | return 0; |
128ea8ab | 2271 | } |
2272 | ||
2273 | /* | |
2274 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2275 | * table as well as the per-VNI route table. | |
2276 | */ | |
d62a17ae | 2277 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2278 | { |
d62a17ae | 2279 | afi_t afi; |
2280 | safi_t safi; | |
2281 | struct bgp_node *rn; | |
40381db7 | 2282 | struct bgp_path_info *pi; |
128ea8ab | 2283 | |
d62a17ae | 2284 | afi = AFI_L2VPN; |
2285 | safi = SAFI_EVPN; | |
128ea8ab | 2286 | |
d62a17ae | 2287 | /* First, walk the global route table for this VNI's type-2 local |
2288 | * routes. | |
2289 | * EVPN routes are a 2-level table, first get the RD table. | |
2290 | */ | |
2291 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2292 | |
d62a17ae | 2293 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2294 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2295 | rn = bgp_route_next(rn)) { | |
2296 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2297 | |
d62a17ae | 2298 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2299 | continue; | |
128ea8ab | 2300 | |
40381db7 | 2301 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2302 | |
d62a17ae | 2303 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2304 | if (pi) |
2305 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2306 | } |
128ea8ab | 2307 | |
d62a17ae | 2308 | return 0; |
128ea8ab | 2309 | } |
2310 | ||
50f74cf1 | 2311 | /* |
2312 | * Delete all routes in per ES route-table | |
2313 | */ | |
2314 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2315 | { | |
2316 | struct bgp_node *rn; | |
40381db7 | 2317 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2318 | |
2319 | /* Walk this ES's route table and delete all routes. */ | |
2320 | for (rn = bgp_table_top(es->route_table); rn; | |
2321 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2322 | for (pi = bgp_node_get_bgp_path_info(rn); |
2323 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2324 | bgp_path_info_delete(rn, pi); |
2325 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2326 | } |
2327 | } | |
2328 | ||
2329 | return 0; | |
2330 | } | |
2331 | ||
128ea8ab | 2332 | /* |
2333 | * Delete all routes in the per-VNI route table. | |
2334 | */ | |
d62a17ae | 2335 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2336 | { |
d62a17ae | 2337 | struct bgp_node *rn; |
40381db7 | 2338 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2339 | |
d62a17ae | 2340 | /* Walk this VNI's route table and delete all routes. */ |
2341 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2342 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2343 | for (pi = bgp_node_get_bgp_path_info(rn); |
2344 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2345 | bgp_path_info_delete(rn, pi); |
2346 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2347 | } |
2348 | } | |
128ea8ab | 2349 | |
d62a17ae | 2350 | return 0; |
128ea8ab | 2351 | } |
2352 | ||
833b8a50 AK |
2353 | /* BUM traffic flood mode per-l2-vni */ |
2354 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2355 | struct bgpevpn *vpn) | |
2356 | { | |
2357 | /* if flooding has been globally disabled per-vni mode is | |
2358 | * not relevant | |
2359 | */ | |
2360 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2361 | return VXLAN_FLOOD_DISABLED; | |
2362 | ||
2363 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2364 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2365 | return VXLAN_FLOOD_PIM_SM; | |
2366 | ||
2367 | /* default is ingress replication */ | |
2368 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2369 | } | |
2370 | ||
128ea8ab | 2371 | /* |
2372 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2373 | * export RT getting modified or change to tunnel IP. Note that these | |
2374 | * situations need the route in the per-VNI table as well as the global | |
2375 | * table to be updated (as attributes change). | |
2376 | */ | |
0ca10580 | 2377 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2378 | { |
d62a17ae | 2379 | int ret; |
2380 | struct prefix_evpn p; | |
128ea8ab | 2381 | |
d62a17ae | 2382 | /* Update and advertise the type-3 route (only one) followed by the |
2383 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2384 | * |
2385 | * RT-3 only if doing head-end replication | |
d62a17ae | 2386 | */ |
833b8a50 AK |
2387 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2388 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
2389 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2390 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2391 | if (ret) | |
2392 | return ret; | |
2393 | } | |
128ea8ab | 2394 | |
d62a17ae | 2395 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2396 | } |
2397 | ||
50f74cf1 | 2398 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2399 | * Also remove all other routes from the per ES table. | |
2400 | * Invoked when ES is deleted. | |
2401 | */ | |
2402 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2403 | { | |
2404 | int ret; | |
2405 | char buf[ESI_STR_LEN]; | |
2406 | struct prefix_evpn p; | |
2407 | ||
2408 | /* Delete and withdraw locally learnt ES route */ | |
2409 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2410 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2411 | if (ret) { | |
e50f7cfd | 2412 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2413 | "%u failed to delete type-4 route for ESI %s", |
2414 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2415 | } |
2416 | ||
2417 | /* Delete all routes from per ES table */ | |
2418 | return delete_all_es_routes(bgp, es); | |
2419 | } | |
2420 | ||
128ea8ab | 2421 | /* |
2422 | * Delete (and withdraw) local routes for specified VNI from the global | |
2423 | * table and per-VNI table. After this, remove all other routes from | |
2424 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2425 | * (advertise-all-vni) being disabled. | |
2426 | */ | |
d62a17ae | 2427 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2428 | { |
d62a17ae | 2429 | int ret; |
2430 | struct prefix_evpn p; | |
128ea8ab | 2431 | |
d62a17ae | 2432 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2433 | * followed by type-3 routes (only one) - for this VNI. | |
2434 | */ | |
2435 | ret = delete_all_type2_routes(bgp, vpn); | |
2436 | if (ret) | |
2437 | return ret; | |
128ea8ab | 2438 | |
d62a17ae | 2439 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2440 | ret = delete_evpn_route(bgp, vpn, &p); | |
2441 | if (ret) | |
2442 | return ret; | |
128ea8ab | 2443 | |
d62a17ae | 2444 | /* Delete all routes from the per-VNI table. */ |
2445 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2446 | } |
2447 | ||
76d07c7a AK |
2448 | /* |
2449 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2450 | * remove the type-3 route if any. A new type-3 route will be generated | |
2451 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2452 | */ | |
2453 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2454 | struct in_addr mcast_grp) | |
2455 | { | |
2456 | struct prefix_evpn p; | |
2457 | ||
2458 | vpn->mcast_grp = mcast_grp; | |
2459 | ||
2460 | if (is_vni_live(vpn)) { | |
2461 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2462 | delete_evpn_route(bgp, vpn, &p); | |
2463 | } | |
2464 | ||
2465 | return 0; | |
2466 | } | |
2467 | ||
128ea8ab | 2468 | /* |
d1911c26 | 2469 | * There is a tunnel endpoint IP address change for this VNI, delete |
2470 | * prior type-3 route (if needed) and update. | |
2471 | * Note: Route re-advertisement happens elsewhere after other processing | |
2472 | * other changes. | |
128ea8ab | 2473 | */ |
d62a17ae | 2474 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2475 | struct in_addr originator_ip) | |
128ea8ab | 2476 | { |
d62a17ae | 2477 | struct prefix_evpn p; |
128ea8ab | 2478 | |
ddd16ed5 MK |
2479 | /* If VNI is not live, we only need to update the originator ip */ |
2480 | if (!is_vni_live(vpn)) { | |
2481 | vpn->originator_ip = originator_ip; | |
2482 | return 0; | |
2483 | } | |
2484 | ||
db0e1937 MK |
2485 | /* Update the tunnel-ip hash */ |
2486 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2487 | bgp_tip_add(bgp, &originator_ip); | |
2488 | ||
2489 | /* filter routes as martian nexthop db has changed */ | |
2490 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2491 | ||
d62a17ae | 2492 | /* Need to withdraw type-3 route as the originator IP is part |
2493 | * of the key. | |
2494 | */ | |
2495 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2496 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2497 | |
d62a17ae | 2498 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2499 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2500 | return 0; |
128ea8ab | 2501 | } |
2502 | ||
c011a88b DS |
2503 | static struct bgp_path_info * |
2504 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2505 | struct bgp_node *rn) | |
6b742349 DS |
2506 | { |
2507 | struct attr *attr_new; | |
2508 | struct bgp_path_info *pi; | |
2509 | ||
2510 | /* Add (or update) attribute to hash. */ | |
2511 | attr_new = bgp_attr_intern(parent_pi->attr); | |
2512 | ||
2513 | /* Create new route with its attribute. */ | |
2514 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2515 | attr_new, rn); | |
2516 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2517 | bgp_path_info_extra_get(pi); | |
2518 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2519 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2520 | if (parent_pi->extra) { | |
2521 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2522 | sizeof(pi->extra->label)); | |
2523 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
2524 | } | |
2525 | bgp_path_info_add(rn, pi); | |
c011a88b DS |
2526 | |
2527 | return pi; | |
6b742349 DS |
2528 | } |
2529 | ||
50f74cf1 | 2530 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2531 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2532 | struct prefix_evpn *p, |
40381db7 | 2533 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2534 | { |
2535 | int ret = 0; | |
2536 | struct bgp_node *rn = NULL; | |
40381db7 | 2537 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2538 | struct attr *attr_new = NULL; |
2539 | ||
2540 | /* Create (or fetch) route within the VNI. | |
2541 | * NOTE: There is no RD here. | |
2542 | */ | |
2543 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2544 | ||
2545 | /* Check if route entry is already present. */ | |
6f94b685 | 2546 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2547 | if (pi->extra |
2548 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2549 | break; |
2550 | ||
40381db7 | 2551 | if (!pi) { |
50f74cf1 | 2552 | /* Add (or update) attribute to hash. */ |
40381db7 | 2553 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2554 | |
2555 | /* Create new route with its attribute. */ | |
40381db7 DS |
2556 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2557 | parent_pi->peer, attr_new, rn); | |
2558 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2559 | bgp_path_info_extra_get(pi); | |
f4d7cb0e DS |
2560 | pi->extra->parent = bgp_path_info_lock(parent_pi); |
2561 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
40381db7 | 2562 | bgp_path_info_add(rn, pi); |
50f74cf1 | 2563 | } else { |
40381db7 DS |
2564 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2565 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2566 | bgp_unlock_node(rn); |
2567 | return 0; | |
2568 | } | |
2569 | /* The attribute has changed. */ | |
2570 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2571 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2572 | |
2573 | /* Restore route, if needed. */ | |
40381db7 DS |
2574 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2575 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2576 | |
2577 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2578 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2579 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2580 | |
2581 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2582 | bgp_attr_unintern(&pi->attr); |
2583 | pi->attr = attr_new; | |
2584 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2585 | } |
2586 | ||
2587 | /* Perform route selection and update zebra, if required. */ | |
2588 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2589 | return ret; | |
2590 | } | |
2591 | ||
d3135ba3 | 2592 | /* |
2593 | * Install route entry into the VRF routing table and invoke route selection. | |
2594 | */ | |
2595 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2596 | struct prefix_evpn *evp, | |
40381db7 | 2597 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2598 | { |
2599 | struct bgp_node *rn; | |
40381db7 | 2600 | struct bgp_path_info *pi; |
1ec31309 | 2601 | struct attr attr; |
d3135ba3 | 2602 | struct attr *attr_new; |
c4edf708 | 2603 | int ret = 0; |
d3135ba3 | 2604 | struct prefix p; |
2605 | struct prefix *pp = &p; | |
2606 | afi_t afi = 0; | |
2607 | safi_t safi = 0; | |
1eb88002 MK |
2608 | char buf[PREFIX_STRLEN]; |
2609 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2610 | |
2611 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2612 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2613 | |
1eb88002 | 2614 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2615 | zlog_debug( |
1ee069db | 2616 | "import evpn prefix %s as ip prefix %s in vrf %s", |
996c9314 LB |
2617 | prefix2str(evp, buf, sizeof(buf)), |
2618 | prefix2str(pp, buf1, sizeof(buf)), | |
2619 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2620 | } |
2621 | ||
d3135ba3 | 2622 | /* Create (or fetch) route within the VRF. */ |
2623 | /* NOTE: There is no RD here. */ | |
3714a385 | 2624 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2625 | afi = AFI_IP; |
2626 | safi = SAFI_UNICAST; | |
2627 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2628 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2629 | afi = AFI_IP6; |
2630 | safi = SAFI_UNICAST; | |
2631 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2632 | } else | |
2633 | return 0; | |
2634 | ||
1ec31309 | 2635 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2636 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2637 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2638 | * address for the rest of the code to flow through. In the case of IPv4, | |
2639 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2640 | */ |
40381db7 | 2641 | bgp_attr_dup(&attr, parent_pi->attr); |
1ec31309 | 2642 | if (afi == AFI_IP6) |
2643 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2644 | else |
2645 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2646 | |
d3135ba3 | 2647 | /* Check if route entry is already present. */ |
6f94b685 | 2648 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2649 | if (pi->extra |
2650 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2651 | break; |
2652 | ||
6b742349 | 2653 | if (!pi) |
c011a88b | 2654 | pi = bgp_create_evpn_bgp_path_info(parent_pi, rn); |
6b742349 | 2655 | else { |
40381db7 DS |
2656 | if (attrhash_cmp(pi->attr, &attr) |
2657 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2658 | bgp_unlock_node(rn); |
2659 | return 0; | |
2660 | } | |
2661 | /* The attribute has changed. */ | |
2662 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2663 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2664 | |
2665 | /* Restore route, if needed. */ | |
40381db7 DS |
2666 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2667 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2668 | |
2669 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2670 | if ((afi == AFI_IP |
2671 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2672 | || (afi == AFI_IP6 | |
2673 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2674 | &attr_new->mp_nexthop_global))) | |
2675 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2676 | |
a9f8ad9f | 2677 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2678 | /* Unintern existing, set to new. */ |
40381db7 DS |
2679 | bgp_attr_unintern(&pi->attr); |
2680 | pi->attr = attr_new; | |
2681 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2682 | } |
2683 | ||
40381db7 | 2684 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2685 | |
d3135ba3 | 2686 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2687 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2688 | |
7452e879 | 2689 | /* Process for route leaking. */ |
2690 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2691 | ||
3c11d70a CS |
2692 | bgp_unlock_node(rn); |
2693 | ||
d3135ba3 | 2694 | return ret; |
2695 | } | |
2696 | ||
128ea8ab | 2697 | /* |
2698 | * Install route entry into the VNI routing table and invoke route selection. | |
2699 | */ | |
d62a17ae | 2700 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2701 | struct prefix_evpn *p, | |
40381db7 | 2702 | struct bgp_path_info *parent_pi) |
d62a17ae | 2703 | { |
2704 | struct bgp_node *rn; | |
40381db7 | 2705 | struct bgp_path_info *pi; |
d62a17ae | 2706 | struct attr *attr_new; |
2707 | int ret; | |
2708 | ||
2709 | /* Create (or fetch) route within the VNI. */ | |
2710 | /* NOTE: There is no RD here. */ | |
2711 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2712 | ||
2713 | /* Check if route entry is already present. */ | |
6f94b685 | 2714 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2715 | if (pi->extra |
2716 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2717 | break; |
2718 | ||
bd0254af MS |
2719 | if (!pi) { |
2720 | /* Create an info */ | |
2721 | (void)bgp_create_evpn_bgp_path_info(parent_pi, rn); | |
2722 | } else { | |
40381db7 DS |
2723 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2724 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2725 | bgp_unlock_node(rn); |
2726 | return 0; | |
2727 | } | |
2728 | /* The attribute has changed. */ | |
2729 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2730 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2731 | |
50f74cf1 | 2732 | /* Restore route, if needed. */ |
40381db7 DS |
2733 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2734 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2735 | |
2736 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2737 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2738 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2739 | |
2740 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2741 | bgp_attr_unintern(&pi->attr); |
2742 | pi->attr = attr_new; | |
2743 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2744 | } |
2745 | ||
2746 | /* Perform route selection and update zebra, if required. */ | |
2747 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2748 | ||
a97a1e11 CS |
2749 | bgp_unlock_node(rn); |
2750 | ||
50f74cf1 | 2751 | return ret; |
2752 | } | |
2753 | ||
2754 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2755 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2756 | struct prefix_evpn *p, |
40381db7 | 2757 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2758 | { |
2759 | int ret; | |
2760 | struct bgp_node *rn; | |
40381db7 | 2761 | struct bgp_path_info *pi; |
50f74cf1 | 2762 | |
2763 | if (!es->route_table) | |
2764 | return 0; | |
2765 | ||
2766 | /* Locate route within the ESI. | |
2767 | * NOTE: There is no RD here. | |
2768 | */ | |
2769 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2770 | if (!rn) | |
2771 | return 0; | |
2772 | ||
2773 | /* Find matching route entry. */ | |
6f94b685 | 2774 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2775 | if (pi->extra |
2776 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2777 | break; |
d62a17ae | 2778 | |
40381db7 | 2779 | if (!pi) |
50f74cf1 | 2780 | return 0; |
d62a17ae | 2781 | |
50f74cf1 | 2782 | /* Mark entry for deletion */ |
40381db7 | 2783 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2784 | |
2785 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2786 | ret = evpn_es_route_select_install(bgp, es, rn); |
2787 | ||
2788 | /* Unlock route node. */ | |
2789 | bgp_unlock_node(rn); | |
d62a17ae | 2790 | |
2791 | return ret; | |
128ea8ab | 2792 | } |
2793 | ||
d3135ba3 | 2794 | /* |
2795 | * Uninstall route entry from the VRF routing table and send message | |
2796 | * to zebra, if appropriate. | |
2797 | */ | |
2798 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2799 | struct prefix_evpn *evp, | |
40381db7 | 2800 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2801 | { |
2802 | struct bgp_node *rn; | |
40381db7 | 2803 | struct bgp_path_info *pi; |
c4edf708 | 2804 | int ret = 0; |
d3135ba3 | 2805 | struct prefix p; |
2806 | struct prefix *pp = &p; | |
2807 | afi_t afi = 0; | |
2808 | safi_t safi = 0; | |
1eb88002 MK |
2809 | char buf[PREFIX_STRLEN]; |
2810 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2811 | |
2812 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2813 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2814 | |
1eb88002 | 2815 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2816 | zlog_debug( |
2817 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2818 | prefix2str(evp, buf, sizeof(buf)), | |
2819 | prefix2str(pp, buf1, sizeof(buf)), | |
2820 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2821 | } |
2822 | ||
d3135ba3 | 2823 | /* Locate route within the VRF. */ |
2824 | /* NOTE: There is no RD here. */ | |
3714a385 | 2825 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2826 | afi = AFI_IP; |
2827 | safi = SAFI_UNICAST; | |
2828 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2829 | } else { | |
2830 | afi = AFI_IP6; | |
2831 | safi = SAFI_UNICAST; | |
2832 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2833 | } | |
2834 | ||
2835 | if (!rn) | |
2836 | return 0; | |
2837 | ||
2838 | /* Find matching route entry. */ | |
6f94b685 | 2839 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2840 | if (pi->extra |
2841 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2842 | break; |
2843 | ||
40381db7 | 2844 | if (!pi) |
d3135ba3 | 2845 | return 0; |
2846 | ||
7452e879 | 2847 | /* Process for route leaking. */ |
2848 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2849 | ||
40381db7 | 2850 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2851 | |
d3135ba3 | 2852 | /* Mark entry for deletion */ |
40381db7 | 2853 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2854 | |
2855 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2856 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2857 | |
2858 | /* Unlock route node. */ | |
2859 | bgp_unlock_node(rn); | |
2860 | ||
2861 | return ret; | |
2862 | } | |
2863 | ||
128ea8ab | 2864 | /* |
2865 | * Uninstall route entry from the VNI routing table and send message | |
2866 | * to zebra, if appropriate. | |
2867 | */ | |
d62a17ae | 2868 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2869 | struct prefix_evpn *p, | |
40381db7 | 2870 | struct bgp_path_info *parent_pi) |
128ea8ab | 2871 | { |
d62a17ae | 2872 | struct bgp_node *rn; |
40381db7 | 2873 | struct bgp_path_info *pi; |
d62a17ae | 2874 | int ret; |
128ea8ab | 2875 | |
d62a17ae | 2876 | /* Locate route within the VNI. */ |
2877 | /* NOTE: There is no RD here. */ | |
2878 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2879 | if (!rn) | |
2880 | return 0; | |
128ea8ab | 2881 | |
d62a17ae | 2882 | /* Find matching route entry. */ |
6f94b685 | 2883 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2884 | if (pi->extra |
2885 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2886 | break; |
128ea8ab | 2887 | |
40381db7 | 2888 | if (!pi) |
d62a17ae | 2889 | return 0; |
128ea8ab | 2890 | |
d62a17ae | 2891 | /* Mark entry for deletion */ |
40381db7 | 2892 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2893 | |
d62a17ae | 2894 | /* Perform route selection and update zebra, if required. */ |
2895 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2896 | |
d62a17ae | 2897 | /* Unlock route node. */ |
2898 | bgp_unlock_node(rn); | |
128ea8ab | 2899 | |
d62a17ae | 2900 | return ret; |
128ea8ab | 2901 | } |
2902 | ||
50f74cf1 | 2903 | /* |
2904 | * Given a prefix, see if it belongs to ES. | |
2905 | */ | |
2906 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2907 | struct evpnes *es) | |
2908 | { | |
2909 | /* if not an ES route return false */ | |
2910 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2911 | return 0; | |
2912 | ||
2913 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2914 | return 1; | |
2915 | ||
2916 | return 0; | |
2917 | } | |
2918 | ||
5ba238b7 MK |
2919 | /* |
2920 | * Given a route entry and a VRF, see if this route entry should be | |
2921 | * imported into the VRF i.e., RTs match. | |
2922 | */ | |
4b7e6066 | 2923 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2924 | struct bgp_path_info *pi) |
5ba238b7 | 2925 | { |
40381db7 | 2926 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2927 | struct ecommunity *ecom; |
2928 | int i; | |
2929 | ||
2930 | assert(attr); | |
2931 | /* Route should have valid RT to be even considered. */ | |
2932 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2933 | return 0; | |
2934 | ||
2935 | ecom = attr->ecommunity; | |
2936 | if (!ecom || !ecom->size) | |
2937 | return 0; | |
2938 | ||
2939 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2940 | * matches, we're done. | |
2941 | */ | |
2942 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2943 | uint8_t *pnt; |
2944 | uint8_t type, sub_type; | |
5ba238b7 MK |
2945 | struct ecommunity_val *eval; |
2946 | struct ecommunity_val eval_tmp; | |
2947 | struct vrf_irt_node *irt; | |
2948 | ||
2949 | /* Only deal with RTs */ | |
2950 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2951 | eval = (struct ecommunity_val *)(ecom->val | |
2952 | + (i * ECOMMUNITY_SIZE)); | |
2953 | type = *pnt++; | |
2954 | sub_type = *pnt++; | |
2955 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2956 | continue; | |
2957 | ||
2958 | /* See if this RT matches specified VNIs import RTs */ | |
2959 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2960 | if (irt) |
5ba238b7 MK |
2961 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2962 | return 1; | |
2963 | ||
2964 | /* Also check for non-exact match. In this, we mask out the AS | |
2965 | * and | |
2966 | * only check on the local-admin sub-field. This is to | |
2967 | * facilitate using | |
2968 | * VNI as the RT for EBGP peering too. | |
2969 | */ | |
2970 | irt = NULL; | |
2971 | if (type == ECOMMUNITY_ENCODE_AS | |
2972 | || type == ECOMMUNITY_ENCODE_AS4 | |
2973 | || type == ECOMMUNITY_ENCODE_IP) { | |
2974 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2975 | mask_ecom_global_admin(&eval_tmp, eval); | |
2976 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2977 | } | |
5d9cbca2 | 2978 | if (irt) |
5ba238b7 MK |
2979 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2980 | return 1; | |
2981 | } | |
2982 | ||
2983 | return 0; | |
2984 | } | |
2985 | ||
128ea8ab | 2986 | /* |
2987 | * Given a route entry and a VNI, see if this route entry should be | |
2988 | * imported into the VNI i.e., RTs match. | |
2989 | */ | |
d62a17ae | 2990 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2991 | struct bgp_path_info *pi) |
d62a17ae | 2992 | { |
40381db7 | 2993 | struct attr *attr = pi->attr; |
d62a17ae | 2994 | struct ecommunity *ecom; |
2995 | int i; | |
2996 | ||
2997 | assert(attr); | |
2998 | /* Route should have valid RT to be even considered. */ | |
2999 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3000 | return 0; | |
3001 | ||
3002 | ecom = attr->ecommunity; | |
3003 | if (!ecom || !ecom->size) | |
3004 | return 0; | |
3005 | ||
3006 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3007 | * matches, we're done. | |
3008 | */ | |
3009 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3010 | uint8_t *pnt; |
3011 | uint8_t type, sub_type; | |
d62a17ae | 3012 | struct ecommunity_val *eval; |
3013 | struct ecommunity_val eval_tmp; | |
3014 | struct irt_node *irt; | |
3015 | ||
3016 | /* Only deal with RTs */ | |
3017 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3018 | eval = (struct ecommunity_val *)(ecom->val | |
3019 | + (i * ECOMMUNITY_SIZE)); | |
3020 | type = *pnt++; | |
3021 | sub_type = *pnt++; | |
3022 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3023 | continue; | |
3024 | ||
3025 | /* See if this RT matches specified VNIs import RTs */ | |
3026 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3027 | if (irt) |
d62a17ae | 3028 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3029 | return 1; | |
3030 | ||
3031 | /* Also check for non-exact match. In this, we mask out the AS | |
3032 | * and | |
3033 | * only check on the local-admin sub-field. This is to | |
3034 | * facilitate using | |
3035 | * VNI as the RT for EBGP peering too. | |
3036 | */ | |
3037 | irt = NULL; | |
3038 | if (type == ECOMMUNITY_ENCODE_AS | |
3039 | || type == ECOMMUNITY_ENCODE_AS4 | |
3040 | || type == ECOMMUNITY_ENCODE_IP) { | |
3041 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3042 | mask_ecom_global_admin(&eval_tmp, eval); | |
3043 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3044 | } | |
b1ab0dfe | 3045 | if (irt) |
d62a17ae | 3046 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3047 | return 1; | |
3048 | } | |
3049 | ||
3050 | return 0; | |
128ea8ab | 3051 | } |
3052 | ||
50f74cf1 | 3053 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
3054 | struct evpnes *es, | |
3055 | int install) | |
3056 | { | |
3057 | int ret; | |
3058 | afi_t afi; | |
3059 | safi_t safi; | |
3060 | char buf[PREFIX_STRLEN]; | |
3061 | char buf1[ESI_STR_LEN]; | |
3062 | struct bgp_node *rd_rn, *rn; | |
3063 | struct bgp_table *table; | |
40381db7 | 3064 | struct bgp_path_info *pi; |
50f74cf1 | 3065 | |
3066 | afi = AFI_L2VPN; | |
3067 | safi = SAFI_EVPN; | |
3068 | ||
2bb9eff4 DS |
3069 | /* |
3070 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 3071 | * imported into this VRF. Note that we need to loop through all global |
3072 | * routes to determine which route matches the import rt on vrf | |
3073 | */ | |
3074 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3075 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3076 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 3077 | if (!table) |
3078 | continue; | |
3079 | ||
3080 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3081 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3082 | ||
6f94b685 DS |
3083 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3084 | pi = pi->next) { | |
2bb9eff4 DS |
3085 | /* |
3086 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 3087 | * this ES. |
3088 | */ | |
40381db7 DS |
3089 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3090 | && pi->type == ZEBRA_ROUTE_BGP | |
3091 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 3092 | continue; |
3093 | ||
2bb9eff4 DS |
3094 | if (!is_prefix_matching_for_es(evp, es)) |
3095 | continue; | |
50f74cf1 | 3096 | |
2bb9eff4 DS |
3097 | if (install) |
3098 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 3099 | bgp, es, evp, pi); |
2bb9eff4 DS |
3100 | else |
3101 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 3102 | bgp, es, evp, pi); |
2bb9eff4 DS |
3103 | |
3104 | if (ret) { | |
af4c2728 | 3105 | flog_err( |
e50f7cfd | 3106 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
3107 | "Failed to %s EVPN %s route in ESI %s", |
3108 | install ? "install" | |
3109 | : "uninstall", | |
3110 | prefix2str(evp, buf, | |
3111 | sizeof(buf)), | |
3112 | esi_to_str(&es->esi, buf1, | |
3113 | sizeof(buf1))); | |
3114 | return ret; | |
50f74cf1 | 3115 | } |
3116 | } | |
3117 | } | |
3118 | } | |
3119 | return 0; | |
3120 | } | |
3121 | ||
47bf0432 CS |
3122 | /* This API will scan evpn routes for checking attribute's rmac |
3123 | * macthes with bgp instance router mac. It avoid installing | |
3124 | * route into bgp vrf table and remote rmac in bridge table. | |
3125 | */ | |
3126 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
3127 | struct prefix_evpn *evp, | |
3128 | struct bgp_path_info *pi) | |
3129 | { | |
3130 | /* evpn route could have learnt prior to L3vni has come up, | |
3131 | * perform rmac check before installing route and | |
3132 | * remote router mac. | |
3133 | * The route will be removed from global bgp table once | |
3134 | * SVI comes up with MAC and stored in hash, triggers | |
3135 | * bgp_mac_rescan_all_evpn_tables. | |
3136 | */ | |
05864da7 | 3137 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
3138 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
3139 | char buf1[PREFIX_STRLEN]; | |
3140 | char attr_str[BUFSIZ] = {0}; | |
3141 | ||
3142 | bgp_dump_attr(pi->attr, attr_str, BUFSIZ); | |
3143 | ||
3144 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
3145 | __func__, bgp_vrf->vrf_id, | |
3146 | prefix2str(evp, buf1, sizeof(buf1)), | |
3147 | attr_str); | |
3148 | } | |
3149 | ||
3150 | return 1; | |
3151 | } | |
3152 | ||
3153 | return 0; | |
3154 | } | |
3155 | ||
5ba238b7 MK |
3156 | /* |
3157 | * Install or uninstall mac-ip routes are appropriate for this | |
3158 | * particular VRF. | |
3159 | */ | |
996c9314 | 3160 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3161 | { |
3162 | afi_t afi; | |
3163 | safi_t safi; | |
3164 | struct bgp_node *rd_rn, *rn; | |
3165 | struct bgp_table *table; | |
40381db7 | 3166 | struct bgp_path_info *pi; |
5ba238b7 MK |
3167 | int ret; |
3168 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 3169 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3170 | |
3171 | afi = AFI_L2VPN; | |
3172 | safi = SAFI_EVPN; | |
5e53dce3 T |
3173 | bgp_evpn = bgp_get_evpn(); |
3174 | if (!bgp_evpn) | |
5ba238b7 MK |
3175 | return -1; |
3176 | ||
3177 | /* Walk entire global routing table and evaluate routes which could be | |
3178 | * imported into this VRF. Note that we need to loop through all global | |
3179 | * routes to determine which route matches the import rt on vrf | |
3180 | */ | |
5e53dce3 | 3181 | for (rd_rn = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_rn; |
5ba238b7 | 3182 | rd_rn = bgp_route_next(rd_rn)) { |
67009e22 | 3183 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
3184 | if (!table) |
3185 | continue; | |
3186 | ||
3187 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3188 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3189 | ||
1eb88002 | 3190 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3191 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3192 | || evp->prefix.route_type | |
3193 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3194 | continue; |
3195 | ||
1eb88002 | 3196 | /* if not a mac+ip route skip this route */ |
3714a385 | 3197 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3198 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3199 | continue; |
3200 | ||
6f94b685 DS |
3201 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3202 | pi = pi->next) { | |
5ba238b7 | 3203 | /* Consider "valid" remote routes applicable for |
523cafc4 | 3204 | * this VRF. |
3205 | */ | |
40381db7 DS |
3206 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3207 | && pi->type == ZEBRA_ROUTE_BGP | |
3208 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3209 | continue; |
3210 | ||
40381db7 | 3211 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
3212 | if (bgp_evpn_route_rmac_self_check( |
3213 | bgp_vrf, evp, pi)) | |
3214 | continue; | |
3215 | ||
5ba238b7 | 3216 | if (install) |
996c9314 | 3217 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3218 | bgp_vrf, evp, pi); |
5ba238b7 | 3219 | else |
996c9314 | 3220 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3221 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3222 | |
3223 | if (ret) { | |
af4c2728 | 3224 | flog_err( |
e50f7cfd | 3225 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3226 | "Failed to %s EVPN %s route in VRF %s", |
3227 | install ? "install" | |
3228 | : "uninstall", | |
3229 | prefix2str(evp, buf, | |
3230 | sizeof(buf)), | |
996c9314 LB |
3231 | vrf_id_to_name( |
3232 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3233 | return ret; |
3234 | } | |
3235 | } | |
3236 | } | |
3237 | } | |
3238 | } | |
3239 | ||
3240 | return 0; | |
3241 | } | |
3242 | ||
128ea8ab | 3243 | /* |
3244 | * Install or uninstall routes of specified type that are appropriate for this | |
3245 | * particular VNI. | |
3246 | */ | |
d62a17ae | 3247 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3248 | struct bgpevpn *vpn, | |
3249 | bgp_evpn_route_type rtype, | |
3250 | int install) | |
3251 | { | |
0291c246 MK |
3252 | afi_t afi; |
3253 | safi_t safi; | |
3254 | struct bgp_node *rd_rn, *rn; | |
3255 | struct bgp_table *table; | |
40381db7 | 3256 | struct bgp_path_info *pi; |
0291c246 | 3257 | int ret; |
d62a17ae | 3258 | |
3259 | afi = AFI_L2VPN; | |
3260 | safi = SAFI_EVPN; | |
3261 | ||
3262 | /* Walk entire global routing table and evaluate routes which could be | |
3263 | * imported into this VPN. Note that we cannot just look at the routes | |
3264 | * for | |
3265 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3266 | * RD. | |
3267 | */ | |
3268 | /* EVPN routes are a 2-level table. */ | |
3269 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3270 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3271 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3272 | if (!table) |
3273 | continue; | |
3274 | ||
3275 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3276 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3277 | ||
3278 | if (evp->prefix.route_type != rtype) | |
3279 | continue; | |
3280 | ||
6f94b685 DS |
3281 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3282 | pi = pi->next) { | |
d62a17ae | 3283 | /* Consider "valid" remote routes applicable for |
3284 | * this VNI. */ | |
40381db7 DS |
3285 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3286 | && pi->type == ZEBRA_ROUTE_BGP | |
3287 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3288 | continue; |
3289 | ||
40381db7 | 3290 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3291 | if (install) |
3292 | ret = install_evpn_route_entry( | |
40381db7 | 3293 | bgp, vpn, evp, pi); |
d62a17ae | 3294 | else |
3295 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3296 | bgp, vpn, evp, pi); |
d62a17ae | 3297 | |
3298 | if (ret) { | |
af4c2728 | 3299 | flog_err( |
e50f7cfd | 3300 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3301 | "%u: Failed to %s EVPN %s route in VNI %u", |
3302 | bgp->vrf_id, | |
3303 | install ? "install" | |
3304 | : "uninstall", | |
3305 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3306 | ? "MACIP" | |
3307 | : "IMET", | |
3308 | vpn->vni); | |
3309 | return ret; | |
3310 | } | |
3311 | } | |
3312 | } | |
3313 | } | |
3314 | } | |
3315 | ||
3316 | return 0; | |
128ea8ab | 3317 | } |
3318 | ||
50f74cf1 | 3319 | /* Install any existing remote ES routes applicable for this ES into its routing |
3320 | * table. This is invoked when ES comes up. | |
3321 | */ | |
3322 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3323 | { | |
3324 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3325 | } | |
3326 | ||
3327 | ||
5ba238b7 | 3328 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3329 | * is invoked upon l3vni-add or l3vni import rt change |
3330 | */ | |
5ba238b7 MK |
3331 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3332 | { | |
3333 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3334 | return 0; | |
3335 | } | |
3336 | ||
128ea8ab | 3337 | /* |
3338 | * Install any existing remote routes applicable for this VNI into its | |
3339 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3340 | * RT is changed. | |
3341 | */ | |
d62a17ae | 3342 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3343 | { |
d62a17ae | 3344 | int ret; |
128ea8ab | 3345 | |
d62a17ae | 3346 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3347 | * for this VNI. | |
3348 | */ | |
3349 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3350 | 1); | |
3351 | if (ret) | |
3352 | return ret; | |
128ea8ab | 3353 | |
d62a17ae | 3354 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3355 | 1); | |
128ea8ab | 3356 | } |
3357 | ||
5ba238b7 MK |
3358 | /* uninstall routes from l3vni vrf. */ |
3359 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3360 | { | |
3361 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3362 | return 0; | |
3363 | } | |
3364 | ||
90e60aa7 | 3365 | /* |
3366 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3367 | * this is invoked is upon an import RT change. | |
3368 | */ | |
d62a17ae | 3369 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3370 | { |
d62a17ae | 3371 | int ret; |
90e60aa7 | 3372 | |
d62a17ae | 3373 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3374 | * applicable | |
3375 | * for this VNI. | |
3376 | */ | |
3377 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3378 | 0); | |
3379 | if (ret) | |
3380 | return ret; | |
90e60aa7 | 3381 | |
d62a17ae | 3382 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3383 | 0); | |
90e60aa7 | 3384 | } |
3385 | ||
50f74cf1 | 3386 | /* Install or unistall route in ES */ |
3387 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3388 | afi_t afi, safi_t safi, | |
3389 | struct prefix_evpn *evp, | |
40381db7 | 3390 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3391 | { |
3392 | int ret = 0; | |
3393 | char buf[ESI_STR_LEN]; | |
3394 | ||
3395 | if (install) | |
40381db7 | 3396 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3397 | else |
40381db7 | 3398 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3399 | |
3400 | if (ret) { | |
af4c2728 | 3401 | flog_err( |
e50f7cfd | 3402 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3403 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3404 | install ? "install" : "uninstall", "ES", | |
3405 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3406 | return ret; |
3407 | } | |
3408 | return 0; | |
3409 | } | |
3410 | ||
d3135ba3 | 3411 | /* |
3412 | * Install or uninstall route in matching VRFs (list). | |
3413 | */ | |
3414 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3415 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3416 | struct bgp_path_info *pi, |
d3135ba3 | 3417 | struct list *vrfs, int install) |
3418 | { | |
3419 | char buf[PREFIX2STR_BUFFER]; | |
3420 | struct bgp *bgp_vrf; | |
3421 | struct listnode *node, *nnode; | |
3422 | ||
90264d64 | 3423 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3424 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3425 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3426 | return 0; |
3427 | ||
90264d64 | 3428 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3429 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3430 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3431 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3432 | return 0; |
3433 | ||
d3135ba3 | 3434 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3435 | int ret; | |
3436 | ||
3437 | if (install) | |
40381db7 | 3438 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3439 | else |
996c9314 | 3440 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3441 | pi); |
d3135ba3 | 3442 | |
3443 | if (ret) { | |
e50f7cfd | 3444 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3445 | "%u: Failed to %s prefix %s in VRF %s", |
3446 | bgp_def->vrf_id, | |
3447 | install ? "install" : "uninstall", | |
3448 | prefix2str(evp, buf, sizeof(buf)), | |
3449 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3450 | return ret; |
3451 | } | |
3452 | } | |
3453 | ||
3454 | return 0; | |
3455 | } | |
3456 | ||
128ea8ab | 3457 | /* |
3458 | * Install or uninstall route in matching VNIs (list). | |
3459 | */ | |
d62a17ae | 3460 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3461 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3462 | struct bgp_path_info *pi, |
d62a17ae | 3463 | struct list *vnis, int install) |
128ea8ab | 3464 | { |
d62a17ae | 3465 | struct bgpevpn *vpn; |
3466 | struct listnode *node, *nnode; | |
128ea8ab | 3467 | |
d62a17ae | 3468 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3469 | int ret; | |
128ea8ab | 3470 | |
d62a17ae | 3471 | if (!is_vni_live(vpn)) |
3472 | continue; | |
128ea8ab | 3473 | |
d62a17ae | 3474 | if (install) |
40381db7 | 3475 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3476 | else |
40381db7 | 3477 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3478 | |
d62a17ae | 3479 | if (ret) { |
1c50c1c0 QY |
3480 | flog_err(EC_BGP_EVPN_FAIL, |
3481 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3482 | bgp->vrf_id, install ? "install" : "uninstall", | |
3483 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3484 | ? "MACIP" | |
3485 | : "IMET", | |
3486 | vpn->vni); | |
d62a17ae | 3487 | return ret; |
3488 | } | |
3489 | } | |
128ea8ab | 3490 | |
d62a17ae | 3491 | return 0; |
128ea8ab | 3492 | } |
3493 | ||
3494 | /* | |
50f74cf1 | 3495 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3496 | */ |
d62a17ae | 3497 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3498 | struct prefix *p, |
40381db7 | 3499 | struct bgp_path_info *pi, int import) |
d62a17ae | 3500 | { |
3501 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3502 | struct attr *attr = pi->attr; |
d62a17ae | 3503 | struct ecommunity *ecom; |
3504 | int i; | |
3505 | ||
3506 | assert(attr); | |
3507 | ||
50f74cf1 | 3508 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3509 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3510 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3511 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3512 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3513 | return 0; |
3514 | ||
3515 | /* If we don't have Route Target, nothing much to do. */ | |
3516 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3517 | return 0; | |
3518 | ||
3519 | ecom = attr->ecommunity; | |
3520 | if (!ecom || !ecom->size) | |
3521 | return -1; | |
3522 | ||
50f74cf1 | 3523 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3524 | * attached to the route */ | |
d62a17ae | 3525 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3526 | uint8_t *pnt; |
3527 | uint8_t type, sub_type; | |
d62a17ae | 3528 | struct ecommunity_val *eval; |
3529 | struct ecommunity_val eval_tmp; | |
996c9314 | 3530 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3531 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3532 | struct evpnes *es; |
d62a17ae | 3533 | |
3534 | /* Only deal with RTs */ | |
3535 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3536 | eval = (struct ecommunity_val *)(ecom->val | |
3537 | + (i * ECOMMUNITY_SIZE)); | |
3538 | type = *pnt++; | |
3539 | sub_type = *pnt++; | |
3540 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3541 | continue; | |
3542 | ||
50f74cf1 | 3543 | /* |
3544 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3545 | * IMET route is imported into VNI table. | |
3546 | * prefix routes are imported into VRF table. | |
523cafc4 | 3547 | */ |
50f74cf1 | 3548 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3549 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3550 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3551 | |
50f74cf1 | 3552 | irt = lookup_import_rt(bgp, eval); |
3553 | if (irt) | |
40381db7 DS |
3554 | install_uninstall_route_in_vnis( |
3555 | bgp, afi, safi, evp, pi, irt->vnis, | |
3556 | import); | |
50f74cf1 | 3557 | |
3558 | vrf_irt = lookup_vrf_import_rt(eval); | |
3559 | if (vrf_irt) | |
40381db7 DS |
3560 | install_uninstall_route_in_vrfs( |
3561 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3562 | import); | |
50f74cf1 | 3563 | |
3564 | /* Also check for non-exact match. | |
3565 | * In this, we mask out the AS and | |
3566 | * only check on the local-admin sub-field. | |
3567 | * This is to facilitate using | |
3568 | * VNI as the RT for EBGP peering too. | |
3569 | */ | |
3570 | irt = NULL; | |
3571 | vrf_irt = NULL; | |
3572 | if (type == ECOMMUNITY_ENCODE_AS | |
3573 | || type == ECOMMUNITY_ENCODE_AS4 | |
3574 | || type == ECOMMUNITY_ENCODE_IP) { | |
3575 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3576 | mask_ecom_global_admin(&eval_tmp, eval); | |
3577 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3578 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3579 | } | |
3580 | ||
3581 | if (irt) | |
40381db7 DS |
3582 | install_uninstall_route_in_vnis( |
3583 | bgp, afi, safi, evp, pi, irt->vnis, | |
3584 | import); | |
50f74cf1 | 3585 | if (vrf_irt) |
40381db7 DS |
3586 | install_uninstall_route_in_vrfs( |
3587 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3588 | import); | |
50f74cf1 | 3589 | } |
3590 | ||
3591 | /* es route is imported into the es table */ | |
3592 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3593 | ||
3594 | /* we will match based on the entire esi to avoid | |
3595 | * imoort of an es route for esi2 into esi1 | |
3596 | */ | |
3597 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3598 | if (es && is_es_local(es)) | |
40381db7 DS |
3599 | install_uninstall_route_in_es( |
3600 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3601 | } |
d62a17ae | 3602 | } |
3603 | ||
3604 | return 0; | |
128ea8ab | 3605 | } |
3606 | ||
2bb9eff4 DS |
3607 | /* |
3608 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3609 | * routes | |
3610 | */ | |
80b140af MK |
3611 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3612 | { | |
5fd9c12b KA |
3613 | /* Delete ipv4 default route and withdraw from peers */ |
3614 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3615 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3616 | SAFI_UNICAST, false); | |
3617 | ||
80b140af | 3618 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3619 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3620 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3621 | |
5fd9c12b KA |
3622 | /* Delete ipv6 default route and withdraw from peers */ |
3623 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3624 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3625 | SAFI_UNICAST, false); | |
3626 | ||
80b140af | 3627 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3628 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3629 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3630 | } |
3631 | ||
2bb9eff4 DS |
3632 | /* |
3633 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3634 | * routes | |
3635 | */ | |
5394a276 | 3636 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3637 | { |
5394a276 CS |
3638 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3639 | ||
3640 | bgp_evpn = bgp_get_evpn(); | |
3641 | if (!bgp_evpn) | |
3642 | return; | |
3643 | ||
80b140af | 3644 | /* update all ipv4 routes */ |
fdf19f06 MK |
3645 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3646 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3647 | |
5fd9c12b KA |
3648 | /* update ipv4 default route and withdraw from peers */ |
3649 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3650 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3651 | SAFI_UNICAST, true); | |
3652 | ||
80b140af | 3653 | /* update all ipv6 routes */ |
fdf19f06 MK |
3654 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3655 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3656 | |
3657 | /* update ipv6 default route and withdraw from peers */ | |
3658 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3659 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3660 | SAFI_UNICAST, true); | |
3661 | ||
80b140af MK |
3662 | } |
3663 | ||
676f83b9 | 3664 | /* |
3665 | * update and advertise local routes for a VRF as type-5 routes. | |
3666 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3667 | * done in the global route table using the routes which already exist in the | |
3668 | * VRF routing table | |
3669 | */ | |
80b140af | 3670 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3671 | { |
80b140af MK |
3672 | /* skip if the RD is configured */ |
3673 | if (is_vrf_rd_configured(bgp_vrf)) | |
3674 | return; | |
3675 | ||
3676 | /* derive the RD for the VRF based on new router-id */ | |
3677 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3678 | ||
3679 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3680 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3681 | } |
3682 | ||
3683 | /* | |
3684 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3685 | * This is invoked upon VRF RD change. The processing is done only from global | |
3686 | * table. | |
3687 | */ | |
80b140af | 3688 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3689 | { |
80b140af MK |
3690 | /* skip if the RD is configured */ |
3691 | if (is_vrf_rd_configured(bgp_vrf)) | |
3692 | return; | |
3693 | ||
3694 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3695 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3696 | } |
3697 | ||
90e60aa7 | 3698 | /* |
3699 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3700 | * change. Note that the processing is done only on the global route table | |
3701 | * using routes that already exist in the per-VNI table. | |
3702 | */ | |
d62a17ae | 3703 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3704 | { | |
3705 | struct prefix_evpn p; | |
3706 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3707 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3708 | struct attr *attr; |
3709 | afi_t afi = AFI_L2VPN; | |
3710 | safi_t safi = SAFI_EVPN; | |
3711 | ||
3712 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3713 | * attributes to create and advertise the type-3 route for this VNI | |
3714 | * in the global table. | |
fd069644 DS |
3715 | * |
3716 | * RT-3 only if doing head-end replication | |
d62a17ae | 3717 | */ |
833b8a50 AK |
3718 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3719 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
3720 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
3721 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3722 | if (!rn) /* unexpected */ | |
3723 | return 0; | |
6f94b685 | 3724 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3725 | if (pi->peer == bgp->peer_self && |
3726 | pi->type == ZEBRA_ROUTE_BGP | |
3727 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3728 | break; | |
3729 | if (!pi) /* unexpected */ | |
3730 | return 0; | |
3731 | attr = pi->attr; | |
d62a17ae | 3732 | |
fd069644 DS |
3733 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3734 | (struct prefix *)&p, &vpn->prd); | |
3735 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3736 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3737 | |
fd069644 DS |
3738 | /* Schedule for processing and unlock node. */ |
3739 | bgp_process(bgp, global_rn, afi, safi); | |
3740 | bgp_unlock_node(global_rn); | |
3741 | } | |
d62a17ae | 3742 | |
3743 | /* Now, walk this VNI's route table and use the route and its attribute | |
3744 | * to create and schedule route in global table. | |
3745 | */ | |
3746 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3747 | rn = bgp_route_next(rn)) { | |
3748 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3749 | ||
3750 | /* Identify MAC-IP local routes. */ | |
3751 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3752 | continue; | |
3753 | ||
6f94b685 | 3754 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3755 | if (pi->peer == bgp->peer_self |
3756 | && pi->type == ZEBRA_ROUTE_BGP | |
3757 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3758 | break; |
40381db7 | 3759 | if (!pi) |
d62a17ae | 3760 | continue; |
3761 | ||
3762 | /* Create route in global routing table using this route entry's | |
3763 | * attribute. | |
3764 | */ | |
40381db7 | 3765 | attr = pi->attr; |
d62a17ae | 3766 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3767 | (struct prefix *)evp, &vpn->prd); | |
3768 | assert(global_rn); | |
3769 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3770 | &global_pi, 0, |
f07e1c99 | 3771 | mac_mobility_seqnum(attr)); |
d62a17ae | 3772 | |
3773 | /* Schedule for processing and unlock node. */ | |
3774 | bgp_process(bgp, global_rn, afi, safi); | |
3775 | bgp_unlock_node(global_rn); | |
3776 | } | |
3777 | ||
3778 | return 0; | |
90e60aa7 | 3779 | } |
3780 | ||
3781 | /* | |
3782 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3783 | * table. Invoked upon router-id change. | |
3784 | */ | |
d62a17ae | 3785 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3786 | { |
d62a17ae | 3787 | int ret; |
3788 | struct prefix_evpn p; | |
3789 | struct bgp_node *global_rn; | |
40381db7 | 3790 | struct bgp_path_info *pi; |
d62a17ae | 3791 | afi_t afi = AFI_L2VPN; |
3792 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3793 | |
d62a17ae | 3794 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3795 | * for this VNI - from the global table. | |
3796 | */ | |
3797 | ret = delete_global_type2_routes(bgp, vpn); | |
3798 | if (ret) | |
3799 | return ret; | |
90e60aa7 | 3800 | |
d62a17ae | 3801 | /* Remove type-3 route for this VNI from global table. */ |
3802 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3803 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3804 | (struct prefix *)&p, &vpn->prd); | |
3805 | if (global_rn) { | |
3806 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3807 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3808 | |
d62a17ae | 3809 | /* Schedule for processing - withdraws to peers happen from |
3810 | * this table. | |
3811 | */ | |
40381db7 | 3812 | if (pi) |
d62a17ae | 3813 | bgp_process(bgp, global_rn, afi, safi); |
3814 | bgp_unlock_node(global_rn); | |
3815 | } | |
90e60aa7 | 3816 | |
d62a17ae | 3817 | return 0; |
90e60aa7 | 3818 | } |
3819 | ||
2d48ee25 | 3820 | /* |
3821 | * Handle router-id change. Update and advertise local routes corresponding | |
3822 | * to this VNI from peers. Note that this is invoked after updating the | |
3823 | * router-id. The routes in the per-VNI table are used to create routes in | |
3824 | * the global table and schedule them. | |
3825 | */ | |
e3b78da8 | 3826 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3827 | { |
e3b78da8 | 3828 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3829 | |
d62a17ae | 3830 | /* Skip VNIs with configured RD. */ |
3831 | if (is_rd_configured(vpn)) | |
3832 | return; | |
2d48ee25 | 3833 | |
d62a17ae | 3834 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3835 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3836 | } |
3837 | ||
3838 | /* | |
3839 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3840 | * to this VNI from peers. Note that this is invoked prior to updating | |
3841 | * the router-id and is done only on the global route table, the routes | |
3842 | * are needed in the per-VNI table to re-advertise with new router id. | |
3843 | */ | |
e3b78da8 | 3844 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3845 | { |
e3b78da8 | 3846 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3847 | |
d62a17ae | 3848 | /* Skip VNIs with configured RD. */ |
3849 | if (is_rd_configured(vpn)) | |
3850 | return; | |
2d48ee25 | 3851 | |
d62a17ae | 3852 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3853 | } |
3854 | ||
fd069644 DS |
3855 | /* |
3856 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3857 | * This is invoked upon flooding mode changing to head-end replication. | |
3858 | */ | |
e3b78da8 | 3859 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3860 | { |
e3b78da8 | 3861 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3862 | struct bgp *bgp = data; |
3863 | struct prefix_evpn p; | |
3864 | ||
833b8a50 AK |
3865 | if (!vpn || !is_vni_live(vpn) || |
3866 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3867 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3868 | return; |
3869 | ||
3870 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3871 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3872 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3873 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3874 | } | |
3875 | ||
3876 | /* | |
3877 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3878 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3879 | */ | |
e3b78da8 | 3880 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3881 | { |
e3b78da8 | 3882 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3883 | struct bgp *bgp = data; |
3884 | struct prefix_evpn p; | |
3885 | ||
3886 | if (!vpn || !is_vni_live(vpn)) | |
3887 | return; | |
3888 | ||
3889 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3890 | delete_evpn_route(bgp, vpn, &p); | |
3891 | } | |
3892 | ||
128ea8ab | 3893 | /* |
3894 | * Process received EVPN type-2 route (advertise or withdraw). | |
3895 | */ | |
d62a17ae | 3896 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3897 | struct attr *attr, uint8_t *pfx, int psize, |
3898 | uint32_t addpath_id) | |
d62a17ae | 3899 | { |
3900 | struct prefix_rd prd; | |
3901 | struct prefix_evpn p; | |
554cd77a | 3902 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3903 | uint8_t ipaddr_len; |
3904 | uint8_t macaddr_len; | |
b57ba6d2 | 3905 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3906 | uint32_t num_labels = 0; |
554cd77a | 3907 | uint32_t eth_tag; |
d62a17ae | 3908 | int ret; |
3909 | ||
3910 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3911 | * additional 3 bytes if there is a second label (VNI): | |
3912 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3913 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3914 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3915 | */ | |
3916 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3917 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3918 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3919 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3920 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3921 | return -1; |
3922 | } | |
3923 | ||
554cd77a VB |
3924 | memset(&evpn, 0, sizeof(evpn)); |
3925 | ||
d62a17ae | 3926 | /* Make prefix_rd */ |
3927 | prd.family = AF_UNSPEC; | |
3928 | prd.prefixlen = 64; | |
3929 | memcpy(&prd.val, pfx, 8); | |
3930 | pfx += 8; | |
3931 | ||
3932 | /* Make EVPN prefix. */ | |
3933 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3934 | p.family = AF_EVPN; |
50f74cf1 | 3935 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3936 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3937 | ||
554cd77a VB |
3938 | /* Copy Ethernet Seg Identifier */ |
3939 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3940 | pfx += ESI_LEN; | |
d62a17ae | 3941 | |
554cd77a VB |
3942 | /* Copy Ethernet Tag */ |
3943 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3944 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3945 | pfx += 4; |
3946 | ||
3947 | /* Get the MAC Addr len */ | |
3948 | macaddr_len = *pfx++; | |
3949 | ||
3950 | /* Get the MAC Addr */ | |
28328ea9 | 3951 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3952 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3953 | pfx += ETH_ALEN; |
d62a17ae | 3954 | } else { |
af4c2728 | 3955 | flog_err( |
e50f7cfd | 3956 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3957 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3958 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3959 | return -1; | |
3960 | } | |
3961 | ||
3962 | ||
3963 | /* Get the IP. */ | |
3964 | ipaddr_len = *pfx++; | |
3965 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3966 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3967 | flog_err( |
e50f7cfd | 3968 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3969 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3970 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3971 | return -1; | |
3972 | } | |
3973 | ||
3974 | if (ipaddr_len) { | |
3975 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3976 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3977 | ? IPADDR_V4 |
3978 | : IPADDR_V6; | |
3714a385 | 3979 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3980 | } |
3981 | pfx += ipaddr_len; | |
3982 | ||
b57ba6d2 MK |
3983 | /* Get the VNI(s). Stored as bytes here. */ |
3984 | num_labels++; | |
3985 | memset(label, 0, sizeof(label)); | |
3986 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3987 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3988 | psize -= (33 + ipaddr_len); |
3989 | /* Do we have a second VNI? */ | |
3990 | if (psize) { | |
3991 | num_labels++; | |
3992 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3993 | /* |
3994 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3995 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3996 | * the next field | |
6b11bd8d | 3997 | */ |
b57ba6d2 | 3998 | } |
d62a17ae | 3999 | |
4000 | /* Process the route. */ | |
4001 | if (attr) | |
4002 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4003 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4004 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 4005 | else |
4006 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4007 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4008 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 4009 | return ret; |
128ea8ab | 4010 | } |
4011 | ||
4012 | /* | |
4013 | * Process received EVPN type-3 route (advertise or withdraw). | |
4014 | */ | |
d62a17ae | 4015 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4016 | struct attr *attr, uint8_t *pfx, int psize, |
4017 | uint32_t addpath_id) | |
d62a17ae | 4018 | { |
4019 | struct prefix_rd prd; | |
4020 | struct prefix_evpn p; | |
d7c0a89a | 4021 | uint8_t ipaddr_len; |
554cd77a | 4022 | uint32_t eth_tag; |
d62a17ae | 4023 | int ret; |
4024 | ||
4025 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4026 | * IP len (1) and IP (4 or 16). | |
4027 | */ | |
4028 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4029 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4030 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4031 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4032 | return -1; |
4033 | } | |
4034 | ||
7fd077aa | 4035 | /* If PMSI is present, log if it is anything other than IR. |
4036 | * Note: We just simply ignore the values as it is not clear if | |
4037 | * doing anything else is better. | |
4038 | */ | |
4039 | if (attr && | |
4040 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
4041 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
4042 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4043 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
4044 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4045 | peer->bgp->vrf_id, peer->host, | |
4046 | attr->pmsi_tnl_type); | |
7fd077aa | 4047 | } |
4048 | } | |
4049 | ||
d62a17ae | 4050 | /* Make prefix_rd */ |
4051 | prd.family = AF_UNSPEC; | |
4052 | prd.prefixlen = 64; | |
4053 | memcpy(&prd.val, pfx, 8); | |
4054 | pfx += 8; | |
4055 | ||
4056 | /* Make EVPN prefix. */ | |
4057 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4058 | p.family = AF_EVPN; |
50f74cf1 | 4059 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4060 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4061 | ||
554cd77a VB |
4062 | /* Copy Ethernet Tag */ |
4063 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4064 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4065 | pfx += 4; |
4066 | ||
4067 | /* Get the IP. */ | |
4068 | ipaddr_len = *pfx++; | |
4069 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4070 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4071 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4072 | } else { |
af4c2728 | 4073 | flog_err( |
e50f7cfd | 4074 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4075 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4076 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4077 | return -1; | |
4078 | } | |
4079 | ||
4080 | /* Process the route. */ | |
4081 | if (attr) | |
4082 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4083 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4084 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4085 | else |
4086 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4087 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4088 | &prd, NULL, 0, NULL); |
d62a17ae | 4089 | return ret; |
128ea8ab | 4090 | } |
4091 | ||
50f74cf1 | 4092 | /* |
4093 | * Process received EVPN type-4 route (advertise or withdraw). | |
4094 | */ | |
4095 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
4096 | struct attr *attr, uint8_t *pfx, int psize, | |
4097 | uint32_t addpath_id) | |
4098 | { | |
4099 | int ret; | |
4100 | esi_t esi; | |
4101 | uint8_t ipaddr_len; | |
4102 | struct in_addr vtep_ip; | |
4103 | struct prefix_rd prd; | |
4104 | struct prefix_evpn p; | |
4105 | ||
4106 | /* Type-4 route should be either 23 or 35 bytes | |
4107 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
4108 | */ | |
4109 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 4110 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4111 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
4112 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 4113 | return -1; |
4114 | } | |
4115 | ||
4116 | /* Make prefix_rd */ | |
4117 | prd.family = AF_UNSPEC; | |
4118 | prd.prefixlen = 64; | |
4119 | memcpy(&prd.val, pfx, 8); | |
4120 | pfx += 8; | |
4121 | ||
4122 | /* get the ESI */ | |
4123 | memcpy(&esi, pfx, ESI_BYTES); | |
4124 | pfx += ESI_BYTES; | |
4125 | ||
4126 | ||
4127 | /* Get the IP. */ | |
4128 | ipaddr_len = *pfx++; | |
4129 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
4130 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
4131 | } else { | |
af4c2728 | 4132 | flog_err( |
e50f7cfd | 4133 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 4134 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
4135 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4136 | return -1; | |
4137 | } | |
4138 | ||
4139 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
4140 | /* Process the route. */ | |
4141 | if (attr) { | |
4142 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4143 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4144 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 4145 | } else { |
50f74cf1 | 4146 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4147 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4148 | &prd, NULL, 0, NULL); | |
4149 | } | |
4150 | return ret; | |
4151 | } | |
4152 | ||
4153 | ||
128ea8ab | 4154 | /* |
4155 | * Process received EVPN type-5 route (advertise or withdraw). | |
4156 | */ | |
d62a17ae | 4157 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4158 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4159 | uint32_t addpath_id) |
d62a17ae | 4160 | { |
4161 | struct prefix_rd prd; | |
4162 | struct prefix_evpn p; | |
4163 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4164 | uint8_t ippfx_len; |
4165 | uint32_t eth_tag; | |
b57ba6d2 | 4166 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4167 | int ret; |
4168 | ||
4169 | /* Type-5 route should be 34 or 58 bytes: | |
4170 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4171 | * GW (4 or 16) and VNI (3). | |
4172 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4173 | */ | |
4174 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4175 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4176 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4177 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4178 | return -1; |
4179 | } | |
4180 | ||
4181 | /* Make prefix_rd */ | |
4182 | prd.family = AF_UNSPEC; | |
4183 | prd.prefixlen = 64; | |
4184 | memcpy(&prd.val, pfx, 8); | |
4185 | pfx += 8; | |
4186 | ||
4187 | /* Make EVPN prefix. */ | |
4188 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4189 | p.family = AF_EVPN; |
50f74cf1 | 4190 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4191 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4192 | ||
4193 | /* Additional information outside of prefix - ESI and GW IP */ | |
4194 | memset(&evpn, 0, sizeof(evpn)); | |
4195 | ||
4196 | /* Fetch ESI */ | |
4197 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
4198 | pfx += 10; | |
4199 | ||
4200 | /* Fetch Ethernet Tag. */ | |
4201 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4202 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4203 | pfx += 4; |
4204 | ||
4205 | /* Fetch IP prefix length. */ | |
4206 | ippfx_len = *pfx++; | |
4207 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4208 | flog_err( |
e50f7cfd | 4209 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4210 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4211 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4212 | return -1; | |
4213 | } | |
3714a385 | 4214 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4215 | |
4216 | /* Determine IPv4 or IPv6 prefix */ | |
4217 | /* Since the address and GW are from the same family, this just becomes | |
4218 | * a simple check on the total size. | |
4219 | */ | |
4220 | if (psize == 34) { | |
3714a385 | 4221 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4222 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4223 | pfx += 4; |
4224 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4225 | pfx += 4; | |
d62a17ae | 4226 | } else { |
3714a385 | 4227 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4228 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4229 | pfx += 16; |
4230 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4231 | pfx += 16; | |
d62a17ae | 4232 | } |
4233 | ||
b57ba6d2 MK |
4234 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4235 | memset(&label, 0, sizeof(label)); | |
4236 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4237 | |
4238 | /* | |
4239 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4240 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4241 | * field | |
6b11bd8d | 4242 | */ |
d62a17ae | 4243 | |
4244 | /* Process the route. */ | |
f007bdce | 4245 | if (attr) |
d62a17ae | 4246 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4247 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4248 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4249 | else |
4250 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4251 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4252 | &prd, &label, 1, &evpn); |
d62a17ae | 4253 | |
4254 | return ret; | |
4255 | } | |
4256 | ||
4257 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 4258 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 4259 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 4260 | { |
4261 | int len; | |
4262 | char temp[16]; | |
4263 | struct evpn_addr *p_evpn_p; | |
4264 | ||
4265 | memset(&temp, 0, 16); | |
b03b8898 | 4266 | if (p->family != AF_EVPN) |
d62a17ae | 4267 | return; |
4268 | p_evpn_p = &(p->u.prefix_evpn); | |
4269 | ||
e9fc2840 | 4270 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4271 | IP and GW-IP have to be both ipv4 or ipv6 |
4272 | */ | |
3714a385 | 4273 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4274 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4275 | else |
e9fc2840 | 4276 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4277 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4278 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4279 | stream_put(s, prd->val, 8); | |
0af35d90 | 4280 | if (attr) |
d62a17ae | 4281 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4282 | else | |
4283 | stream_put(s, &temp, 10); | |
3714a385 | 4284 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4285 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4286 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4287 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4288 | else |
3714a385 | 4289 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4290 | if (attr) { |
3714a385 | 4291 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4292 | stream_put_ipv4(s, |
4293 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4294 | else | |
4295 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4296 | } else { | |
3714a385 | 4297 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4298 | stream_put_ipv4(s, 0); |
4299 | else | |
4300 | stream_put(s, &temp, 16); | |
4301 | } | |
4302 | ||
b57ba6d2 | 4303 | if (num_labels) |
d62a17ae | 4304 | stream_put(s, label, 3); |
4305 | else | |
4306 | stream_put3(s, 0); | |
128ea8ab | 4307 | } |
4308 | ||
4309 | /* | |
4310 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4311 | */ | |
e3b78da8 | 4312 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4313 | { |
e3b78da8 | 4314 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4315 | |
d62a17ae | 4316 | /* Remove EVPN routes and schedule for processing. */ |
4317 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4318 | |
d62a17ae | 4319 | /* Clear "live" flag and see if hash needs to be freed. */ |
4320 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4321 | if (!is_vni_configured(vpn)) | |
4322 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4323 | } |
4324 | ||
4325 | /* | |
4326 | * Free a VNI entry; iterator function called during cleanup. | |
4327 | */ | |
e3b78da8 | 4328 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4329 | { |
e3b78da8 | 4330 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4331 | |
d62a17ae | 4332 | delete_all_vni_routes(bgp, vpn); |
4333 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4334 | } |
4335 | ||
c581d8b0 MK |
4336 | /* |
4337 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4338 | */ | |
4339 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4340 | { | |
5e53dce3 | 4341 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4342 | |
c581d8b0 | 4343 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4344 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4345 | ||
4346 | /* Map RT to VRF */ | |
5e53dce3 T |
4347 | bgp_evpn = bgp_get_evpn(); |
4348 | if (!bgp_evpn) | |
10ebe1ab MK |
4349 | return; |
4350 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4351 | } |
4352 | ||
4353 | /* | |
4354 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4355 | */ | |
4356 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4357 | { | |
4358 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4359 | } | |
4360 | ||
4361 | /* | |
4362 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4363 | */ | |
4364 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4365 | { | |
4366 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4367 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4368 | } | |
4369 | ||
4370 | /* | |
4371 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4372 | */ | |
4373 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4374 | { | |
4375 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4376 | } | |
128ea8ab | 4377 | |
f1f8b53c MK |
4378 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4379 | { | |
5e53dce3 | 4380 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4381 | struct listnode *node = NULL; |
4382 | struct bgpevpn *vpn = NULL; | |
4383 | ||
5e53dce3 T |
4384 | bgp_evpn = bgp_get_evpn(); |
4385 | if (!bgp_evpn) | |
f1f8b53c MK |
4386 | return; |
4387 | ||
4992b4ae MK |
4388 | /* update all type-5 routes */ |
4389 | update_advertise_vrf_routes(bgp_vrf); | |
4390 | ||
4391 | /* update all type-2 routes */ | |
f1f8b53c | 4392 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4393 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4394 | } |
4395 | ||
bf1061d8 VB |
4396 | /* |
4397 | * Handle autort change for a given VNI. | |
4398 | */ | |
e3b78da8 | 4399 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4400 | { |
e3b78da8 | 4401 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4402 | |
bf1061d8 VB |
4403 | if (!is_import_rt_configured(vpn)) { |
4404 | if (is_vni_live(vpn)) | |
4405 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4406 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4407 | list_delete_all_node(vpn->import_rtl); |
4408 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4409 | if (is_vni_live(vpn)) | |
4410 | bgp_evpn_install_routes(bgp, vpn); | |
4411 | } | |
4412 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4413 | list_delete_all_node(vpn->export_rtl); |
4414 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4415 | if (is_vni_live(vpn)) | |
4416 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4417 | } | |
4418 | } | |
4419 | ||
128ea8ab | 4420 | /* |
4421 | * Public functions. | |
4422 | */ | |
4423 | ||
5424b7ba | 4424 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4425 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4426 | afi_t afi, safi_t safi) |
4427 | { | |
4428 | int ret = 0; | |
4429 | struct prefix_evpn evp; | |
4430 | char buf[PREFIX_STRLEN]; | |
4431 | ||
31310b25 | 4432 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4433 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4434 | if (ret) { | |
af4c2728 | 4435 | flog_err( |
e50f7cfd | 4436 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4437 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4438 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4439 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4440 | } |
4441 | } | |
4442 | ||
342dd0c6 | 4443 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4444 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4445 | { |
4446 | struct bgp_table *table = NULL; | |
4447 | struct bgp_node *rn = NULL; | |
40381db7 | 4448 | struct bgp_path_info *pi; |
342dd0c6 | 4449 | |
053905d2 | 4450 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4451 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
f106e3a7 | 4452 | /* Only care about "selected" routes. Also ensure that |
4453 | * these are routes that are injectable into EVPN. | |
4454 | */ | |
25f2ca53 | 4455 | /* TODO: Support for AddPath for EVPN. */ |
6f94b685 | 4456 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4457 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4458 | && is_route_injectable_into_evpn(pi)) { |
25f2ca53 | 4459 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4460 | afi, safi); | |
4461 | break; | |
4462 | } | |
4463 | } | |
4464 | } | |
5424b7ba | 4465 | } |
342dd0c6 | 4466 | |
5fd9c12b KA |
4467 | /* |
4468 | * evpn - enable advertisement of default g/w | |
4469 | */ | |
4470 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4471 | safi_t safi, bool add) | |
4472 | { | |
4473 | struct prefix ip_prefix; | |
4474 | ||
4475 | /* form the default prefix 0.0.0.0/0 */ | |
4476 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4477 | ip_prefix.family = afi2family(afi); | |
4478 | ||
4479 | if (add) { | |
4480 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4481 | NULL, afi, safi); | |
4482 | } else { | |
4483 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4484 | afi, safi); | |
4485 | } | |
4486 | } | |
4487 | ||
4488 | ||
2f69f6d3 | 4489 | /* |
4490 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4491 | * to this function correspond to those of the source IP prefix (best | |
4492 | * path in the case of the attr. In the case of a local prefix (when we | |
4493 | * are advertising local subnets), the src_attr will be NULL. | |
4494 | */ | |
31310b25 | 4495 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4496 | struct attr *src_attr, afi_t afi, |
4497 | safi_t safi) | |
5424b7ba MK |
4498 | { |
4499 | int ret = 0; | |
4500 | struct prefix_evpn evp; | |
4501 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4502 | |
31310b25 | 4503 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4504 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4505 | if (ret) | |
e50f7cfd | 4506 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4507 | "%u: Failed to create type-5 route for prefix %s", |
4508 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4509 | } |
4510 | ||
2f69f6d3 | 4511 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4512 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4513 | * advertisement is enabled. | |
4514 | */ | |
996c9314 LB |
4515 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4516 | safi_t safi) | |
342dd0c6 | 4517 | { |
4518 | struct bgp_table *table = NULL; | |
4519 | struct bgp_node *rn = NULL; | |
40381db7 | 4520 | struct bgp_path_info *pi; |
342dd0c6 | 4521 | |
053905d2 | 4522 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4523 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4524 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4525 | * attribute. Also, ensure that the route is injectable |
4526 | * into EVPN. | |
2f69f6d3 | 4527 | * TODO: Support for AddPath for EVPN. |
4528 | */ | |
6f94b685 | 4529 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4530 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4531 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4532 | |
4533 | /* apply the route-map */ | |
4534 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4535 | route_map_result_t ret; |
53c84f78 | 4536 | |
996c9314 LB |
4537 | ret = route_map_apply( |
4538 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4539 | .map, | |
40381db7 | 4540 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4541 | if (ret == RMAP_DENYMATCH) |
4542 | continue; | |
4543 | } | |
996c9314 | 4544 | bgp_evpn_advertise_type5_route( |
40381db7 | 4545 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4546 | break; |
4547 | } | |
4548 | } | |
31310b25 | 4549 | } |
342dd0c6 | 4550 | } |
4551 | ||
996c9314 | 4552 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4553 | { |
4554 | struct listnode *node, *nnode, *node_to_del; | |
4555 | struct ecommunity *ecom, *ecom_auto; | |
4556 | struct ecommunity_val eval; | |
4557 | ||
bf1061d8 VB |
4558 | if (bgp->advertise_autort_rfc8365) |
4559 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4560 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4561 | ||
4562 | ecom_auto = ecommunity_new(); | |
4563 | ecommunity_add_val(ecom_auto, &eval); | |
4564 | node_to_del = NULL; | |
4565 | ||
4566 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4567 | if (ecommunity_match(ecom, ecom_auto)) { | |
4568 | ecommunity_free(&ecom); | |
4569 | node_to_del = node; | |
4570 | } | |
4571 | } | |
4572 | ||
4573 | if (node_to_del) | |
4574 | list_delete_node(rtl, node_to_del); | |
4575 | ||
4576 | ecommunity_free(&ecom_auto); | |
4577 | } | |
4578 | ||
4579 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4580 | struct ecommunity *ecomadd) |
c581d8b0 | 4581 | { |
5ba238b7 | 4582 | /* uninstall routes from vrf */ |
3d0b43d7 | 4583 | if (is_l3vni_live(bgp_vrf)) |
4584 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4585 | |
4586 | /* Cleanup the RT to VRF mapping */ | |
4587 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4588 | ||
c581d8b0 MK |
4589 | /* Remove auto generated RT */ |
4590 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4591 | ||
4592 | /* Add the newly configured RT to RT list */ | |
4593 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4594 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4595 | ||
3d0b43d7 | 4596 | /* map VRF to its RTs and install routes matching the new RTs */ |
4597 | if (is_l3vni_live(bgp_vrf)) { | |
4598 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4599 | install_routes_for_vrf(bgp_vrf); | |
4600 | } | |
c581d8b0 MK |
4601 | } |
4602 | ||
4603 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4604 | struct ecommunity *ecomdel) | |
4605 | { | |
4606 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4607 | struct ecommunity *ecom = NULL; | |
4608 | ||
5ba238b7 | 4609 | /* uninstall routes from vrf */ |
3d0b43d7 | 4610 | if (is_l3vni_live(bgp_vrf)) |
4611 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4612 | |
4613 | /* Cleanup the RT to VRF mapping */ | |
4614 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4615 | ||
c581d8b0 MK |
4616 | /* remove the RT from the RT list */ |
4617 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4618 | if (ecommunity_match(ecom, ecomdel)) { | |
4619 | ecommunity_free(&ecom); | |
4620 | node_to_del = node; | |
4621 | break; | |
4622 | } | |
4623 | } | |
4624 | ||
4625 | if (node_to_del) | |
4626 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4627 | ||
b3a4db3d | 4628 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4629 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4630 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4631 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4632 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4633 | } | |
4634 | ||
3d0b43d7 | 4635 | /* map VRFs to its RTs and install routes matching this new RT */ |
4636 | if (is_l3vni_live(bgp_vrf)) { | |
4637 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4638 | install_routes_for_vrf(bgp_vrf); | |
4639 | } | |
c581d8b0 MK |
4640 | } |
4641 | ||
4642 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4643 | struct ecommunity *ecomadd) | |
4644 | { | |
4645 | /* remove auto-generated RT */ | |
4646 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4647 | ||
4648 | /* Add the new RT to the RT list */ | |
4649 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4650 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4651 | ||
f1f8b53c | 4652 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4653 | } |
4654 | ||
4655 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4656 | struct ecommunity *ecomdel) | |
4657 | { | |
4658 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4659 | struct ecommunity *ecom = NULL; | |
4660 | ||
4661 | /* Remove the RT from the RT list */ | |
4662 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4663 | if (ecommunity_match(ecom, ecomdel)) { | |
4664 | ecommunity_free(&ecom); | |
4665 | node_to_del = node; | |
4666 | break; | |
4667 | } | |
4668 | } | |
4669 | ||
4670 | if (node_to_del) | |
4671 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4672 | ||
1525e99f DS |
4673 | /* |
4674 | * Temporary assert to make SA happy. | |
4675 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4676 | * which means that SA is going to complain about | |
4677 | * the list_isempty call, which doesn't NULL check. | |
4678 | * So until we get this situation cleaned up, here | |
4679 | * we are. | |
4680 | */ | |
4681 | assert(bgp_vrf->vrf_export_rtl); | |
4682 | ||
c581d8b0 | 4683 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4684 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4685 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4686 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4687 | } | |
4688 | ||
f1f8b53c | 4689 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4690 | } |
4691 | ||
2d48ee25 | 4692 | /* |
4693 | * Handle change to BGP router id. This is invoked twice by the change | |
4694 | * handler, first before the router id has been changed and then after | |
4695 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4696 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4697 | * will result in the routes being re-advertised. |
4698 | */ | |
d62a17ae | 4699 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4700 | { |
5394a276 CS |
4701 | struct listnode *node; |
4702 | struct bgp *bgp_vrf; | |
4703 | ||
676f83b9 | 4704 | if (withdraw) { |
4705 | ||
4706 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4707 | stored in the global table for this vrf |
4708 | */ | |
80b140af | 4709 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4710 | |
4711 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4712 | * L2-VNIs |
4713 | */ | |
d62a17ae | 4714 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4715 | (void (*)(struct hash_bucket *, |
d62a17ae | 4716 | void *))withdraw_router_id_vni, |
4717 | bgp); | |
5394a276 CS |
4718 | |
4719 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4720 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4721 | if (bgp_vrf->evpn_info->advertise_pip && | |
4722 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4723 | == INADDR_ANY)) | |
4724 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4725 | = INADDR_ANY; | |
4726 | } | |
4727 | } | |
676f83b9 | 4728 | } else { |
4729 | ||
5394a276 CS |
4730 | /* Assign new default instance router-id */ |
4731 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4732 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4733 | if (bgp_vrf->evpn_info->advertise_pip && | |
4734 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4735 | == INADDR_ANY)) { | |
4736 | bgp_vrf->evpn_info->pip_ip = | |
4737 | bgp->router_id; | |
4738 | /* advertise type-5 routes with | |
4739 | * new nexthop | |
4740 | */ | |
4741 | update_advertise_vrf_routes(bgp_vrf); | |
4742 | } | |
4743 | } | |
4744 | } | |
4745 | ||
676f83b9 | 4746 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4747 | * RD |
4748 | */ | |
80b140af | 4749 | update_router_id_vrf(bgp); |
676f83b9 | 4750 | |
4751 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4752 | * new RD |
4753 | */ | |
d62a17ae | 4754 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4755 | (void (*)(struct hash_bucket *, |
d62a17ae | 4756 | void *))update_router_id_vni, |
4757 | bgp); | |
676f83b9 | 4758 | } |
2d48ee25 | 4759 | } |
4760 | ||
bf1061d8 VB |
4761 | /* |
4762 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4763 | */ | |
4764 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4765 | { | |
4766 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4767 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4768 | void*))update_autort_vni, |
4769 | bgp); | |
4770 | } | |
4771 | ||
90e60aa7 | 4772 | /* |
4773 | * Handle change to export RT - update and advertise local routes. | |
4774 | */ | |
d62a17ae | 4775 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4776 | { |
d62a17ae | 4777 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4778 | } |
4779 | ||
996c9314 | 4780 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4781 | { |
4782 | if (withdraw) | |
4783 | delete_withdraw_vrf_routes(bgp_vrf); | |
4784 | else | |
4785 | update_advertise_vrf_routes(bgp_vrf); | |
4786 | } | |
4787 | ||
90e60aa7 | 4788 | /* |
4789 | * Handle change to RD. This is invoked twice by the change handler, | |
4790 | * first before the RD has been changed and then after the RD has | |
4791 | * been changed. The first invocation will result in local routes | |
4792 | * of this VNI being deleted and withdrawn and the next will result | |
4793 | * in the routes being re-advertised. | |
4794 | */ | |
d62a17ae | 4795 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4796 | int withdraw) | |
90e60aa7 | 4797 | { |
d62a17ae | 4798 | if (withdraw) |
4799 | delete_withdraw_vni_routes(bgp, vpn); | |
4800 | else | |
4801 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4802 | } |
4803 | ||
4804 | /* | |
4805 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4806 | */ | |
d62a17ae | 4807 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4808 | { |
d62a17ae | 4809 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4810 | } |
4811 | ||
4812 | /* | |
4813 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4814 | * to Import RT. | |
4815 | */ | |
d62a17ae | 4816 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4817 | { |
d62a17ae | 4818 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4819 | } |
4820 | ||
b16031a2 | 4821 | /* |
b57ba6d2 | 4822 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4823 | */ |
d7c0a89a | 4824 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4825 | int len) |
b16031a2 | 4826 | { |
b57ba6d2 | 4827 | vni_t vni1, vni2; |
b16031a2 | 4828 | |
b57ba6d2 MK |
4829 | vni1 = label2vni(label); |
4830 | if (num_labels == 2) { | |
996c9314 | 4831 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4832 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4833 | } else | |
4834 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4835 | return buf; |
b16031a2 | 4836 | } |
4837 | ||
9c92b5f7 MK |
4838 | /* |
4839 | * Function to convert evpn route to json format. | |
4840 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4841 | */ | |
57f7feb6 | 4842 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4843 | { |
b682f6de | 4844 | char buf1[ETHER_ADDR_STRLEN]; |
4845 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4846 | uint8_t family; |
4847 | uint8_t prefixlen; | |
9c92b5f7 | 4848 | |
b682f6de | 4849 | if (!json) |
4850 | return; | |
9c92b5f7 | 4851 | |
44c69747 LK |
4852 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4853 | ||
4854 | switch (p->prefix.route_type) { | |
4855 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4856 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4857 | p->prefix.macip_addr.eth_tag); |
4858 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4859 | json_object_string_add(json, "mac", | |
4860 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4861 | sizeof(buf1))); | |
4862 | ||
4863 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4864 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4865 | AF_INET6; | |
4866 | prefixlen = (family == AF_INET) ? | |
4867 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4868 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4869 | buf2, PREFIX2STR_BUFFER); | |
4870 | json_object_int_add(json, "ipLen", prefixlen); | |
4871 | json_object_string_add(json, "ip", buf2); | |
4872 | } | |
4873 | break; | |
dff8f48d | 4874 | |
44c69747 LK |
4875 | case BGP_EVPN_IMET_ROUTE: |
4876 | json_object_int_add(json, "ethTag", | |
4877 | p->prefix.imet_addr.eth_tag); | |
4878 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4879 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4880 | IPV6_MAX_BITLEN; | |
4881 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4882 | PREFIX2STR_BUFFER); | |
4883 | json_object_int_add(json, "ipLen", prefixlen); | |
4884 | json_object_string_add(json, "ip", buf2); | |
4885 | break; | |
dff8f48d | 4886 | |
44c69747 LK |
4887 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4888 | json_object_int_add(json, "ethTag", | |
4889 | p->prefix.prefix_addr.eth_tag); | |
4890 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4891 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4892 | buf2, sizeof(buf2)); | |
4893 | json_object_int_add(json, "ipLen", | |
4894 | p->prefix.prefix_addr.ip_prefix_length); | |
4895 | json_object_string_add(json, "ip", buf2); | |
4896 | break; | |
4897 | ||
4898 | default: | |
4899 | break; | |
dff8f48d | 4900 | } |
9c92b5f7 MK |
4901 | } |
4902 | ||
520d5d76 | 4903 | /* |
4904 | * Function to convert evpn route to string. | |
4905 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4906 | */ | |
d62a17ae | 4907 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4908 | { | |
4909 | char buf1[ETHER_ADDR_STRLEN]; | |
4910 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4911 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4912 | |
4913 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4914 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4915 | p->prefix.imet_addr.eth_tag, |
4916 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4917 | : IPV6_MAX_BITLEN, |
3714a385 | 4918 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4919 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4920 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4921 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4922 | p->prefix.route_type, | |
3714a385 | 4923 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4924 | 8 * ETH_ALEN, |
3714a385 | 4925 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4926 | sizeof(buf1))); |
4927 | else { | |
d7c0a89a | 4928 | uint8_t family; |
d62a17ae | 4929 | |
3714a385 | 4930 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4931 | : AF_INET6; |
554cd77a VB |
4932 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4933 | p->prefix.route_type, | |
3714a385 | 4934 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4935 | 8 * ETH_ALEN, |
3714a385 | 4936 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4937 | sizeof(buf1)), |
4938 | family == AF_INET ? IPV4_MAX_BITLEN | |
4939 | : IPV6_MAX_BITLEN, | |
3714a385 | 4940 | inet_ntop(family, |
4941 | &p->prefix.macip_addr.ip.ip.addr, | |
4942 | buf2, | |
d62a17ae | 4943 | PREFIX2STR_BUFFER)); |
4944 | } | |
342dd0c6 | 4945 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4946 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4947 | p->prefix.route_type, | |
3714a385 | 4948 | p->prefix.prefix_addr.eth_tag, |
4949 | p->prefix.prefix_addr.ip_prefix_length, | |
4950 | is_evpn_prefix_ipaddr_v4(p) | |
4951 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4952 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4953 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4954 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4955 | p->prefix.route_type, | |
4956 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4957 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4958 | : IPV6_MAX_BITLEN, | |
4959 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4960 | } else { |
b03b8898 | 4961 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4962 | snprintf(buf, len, "(unsupported route type %d)", |
4963 | p->prefix.route_type); | |
d62a17ae | 4964 | } |
4965 | ||
4966 | return (buf); | |
520d5d76 | 4967 | } |
4968 | ||
128ea8ab | 4969 | /* |
4970 | * Encode EVPN prefix in Update (MP_REACH) | |
4971 | */ | |
d62a17ae | 4972 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4973 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4974 | uint32_t num_labels, struct attr *attr, |
4975 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4976 | { |
4977 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4978 | int len, ipa_len = 0; |
d62a17ae | 4979 | |
4980 | if (addpath_encode) | |
4981 | stream_putl(s, addpath_tx_id); | |
4982 | ||
4983 | /* Route type */ | |
4984 | stream_putc(s, evp->prefix.route_type); | |
4985 | ||
4986 | switch (evp->prefix.route_type) { | |
4987 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4988 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4989 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4990 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4991 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4992 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4993 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4994 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4995 | len += 3; | |
4996 | stream_putc(s, len); | |
996c9314 | 4997 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4998 | if (attr) |
4999 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
5000 | else | |
5001 | stream_put(s, 0, 10); | |
3714a385 | 5002 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5003 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5004 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5005 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5006 | if (ipa_len) /* IP */ | |
5007 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5008 | ipa_len); | |
b57ba6d2 MK |
5009 | /* 1st label is the L2 VNI */ |
5010 | stream_put(s, label, BGP_LABEL_BYTES); | |
5011 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5012 | if (ipa_len && num_labels > 1) | |
996c9314 | 5013 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5014 | break; |
5015 | ||
5016 | case BGP_EVPN_IMET_ROUTE: | |
5017 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5018 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5019 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5020 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5021 | /* Originating Router's IP Addr */ | |
3714a385 | 5022 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5023 | break; |
5024 | ||
50f74cf1 | 5025 | case BGP_EVPN_ES_ROUTE: |
5026 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5027 | stream_put(s, prd->val, 8); /* RD */ | |
5028 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5029 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5030 | /* VTEP IP */ |
5031 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5032 | break; |
5033 | ||
d62a17ae | 5034 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5035 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5036 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5037 | break; |
5038 | ||
5039 | default: | |
5040 | break; | |
5041 | } | |
5042 | } | |
5043 | ||
5044 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5045 | struct bgp_nlri *packet, int withdraw) | |
5046 | { | |
d7c0a89a QY |
5047 | uint8_t *pnt; |
5048 | uint8_t *lim; | |
d62a17ae | 5049 | afi_t afi; |
5050 | safi_t safi; | |
d7c0a89a | 5051 | uint32_t addpath_id; |
d62a17ae | 5052 | int addpath_encoded; |
5053 | int psize = 0; | |
d7c0a89a | 5054 | uint8_t rtype; |
d62a17ae | 5055 | struct prefix p; |
5056 | ||
d62a17ae | 5057 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5058 | pnt = packet->nlri; | |
5059 | lim = pnt + packet->length; | |
5060 | afi = packet->afi; | |
5061 | safi = packet->safi; | |
5062 | addpath_id = 0; | |
5063 | ||
5064 | addpath_encoded = | |
5065 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
5066 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
5067 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
5068 | ||
5069 | for (; pnt < lim; pnt += psize) { | |
5070 | /* Clear prefix structure. */ | |
5071 | memset(&p, 0, sizeof(struct prefix)); | |
5072 | ||
5073 | /* Deal with path-id if AddPath is supported. */ | |
5074 | if (addpath_encoded) { | |
5075 | /* When packet overflow occurs return immediately. */ | |
5076 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5077 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5078 | |
5079 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
5080 | pnt += BGP_ADDPATH_ID_LEN; | |
5081 | } | |
5082 | ||
5083 | /* All EVPN NLRI types start with type and length. */ | |
5084 | if (pnt + 2 > lim) | |
513386b5 | 5085 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5086 | |
5087 | rtype = *pnt++; | |
3f54c705 | 5088 | psize = *pnt++; |
d62a17ae | 5089 | |
5090 | /* When packet overflow occur return immediately. */ | |
5091 | if (pnt + psize > lim) | |
513386b5 | 5092 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5093 | |
5094 | switch (rtype) { | |
5095 | case BGP_EVPN_MAC_IP_ROUTE: | |
5096 | if (process_type2_route(peer, afi, safi, | |
5097 | withdraw ? NULL : attr, pnt, | |
5098 | psize, addpath_id)) { | |
af4c2728 | 5099 | flog_err( |
e50f7cfd | 5100 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5101 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5102 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5103 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5104 | } |
5105 | break; | |
5106 | ||
5107 | case BGP_EVPN_IMET_ROUTE: | |
5108 | if (process_type3_route(peer, afi, safi, | |
5109 | withdraw ? NULL : attr, pnt, | |
5110 | psize, addpath_id)) { | |
af4c2728 | 5111 | flog_err( |
e50f7cfd | 5112 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5113 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5114 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5115 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5116 | } |
5117 | break; | |
5118 | ||
50f74cf1 | 5119 | case BGP_EVPN_ES_ROUTE: |
5120 | if (process_type4_route(peer, afi, safi, | |
5121 | withdraw ? NULL : attr, pnt, | |
5122 | psize, addpath_id)) { | |
af4c2728 | 5123 | flog_err( |
e50f7cfd | 5124 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5125 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5126 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5127 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5128 | } |
5129 | break; | |
5130 | ||
d62a17ae | 5131 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5132 | if (process_type5_route(peer, afi, safi, |
5133 | withdraw ? NULL : attr, pnt, | |
5134 | psize, addpath_id)) { | |
af4c2728 | 5135 | flog_err( |
e50f7cfd | 5136 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5137 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5138 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5139 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5140 | } |
5141 | break; | |
5142 | ||
5143 | default: | |
5144 | break; | |
5145 | } | |
5146 | } | |
5147 | ||
5148 | /* Packet length consistency check. */ | |
5149 | if (pnt != lim) | |
513386b5 | 5150 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5151 | |
513386b5 | 5152 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5153 | } |
5154 | ||
10ebe1ab MK |
5155 | /* |
5156 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5157 | * The mapping will be used during route processing. | |
5158 | * bgp_def: default bgp instance | |
5159 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5160 | */ | |
5161 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5162 | { | |
5163 | int i = 0; | |
5164 | struct ecommunity_val *eval = NULL; | |
5165 | struct listnode *node = NULL, *nnode = NULL; | |
5166 | struct ecommunity *ecom = NULL; | |
5167 | ||
5168 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5169 | for (i = 0; i < ecom->size; i++) { | |
5170 | eval = (struct ecommunity_val *)(ecom->val | |
5171 | + (i | |
5172 | * ECOMMUNITY_SIZE)); | |
5173 | map_vrf_to_rt(bgp_vrf, eval); | |
5174 | } | |
5175 | } | |
5176 | } | |
5177 | ||
5178 | /* | |
5179 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5180 | */ | |
5181 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5182 | { | |
5183 | int i; | |
5184 | struct ecommunity_val *eval; | |
5185 | struct listnode *node, *nnode; | |
5186 | struct ecommunity *ecom; | |
5187 | ||
5188 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5189 | for (i = 0; i < ecom->size; i++) { | |
5190 | struct vrf_irt_node *irt; | |
5191 | struct ecommunity_val eval_tmp; | |
5192 | ||
5193 | eval = (struct ecommunity_val *)(ecom->val | |
5194 | + (i | |
5195 | * ECOMMUNITY_SIZE)); | |
5196 | /* If using "automatic" RT, we only care about the | |
5197 | * local-admin sub-field. | |
5198 | * This is to facilitate using VNI as the RT for EBGP | |
5199 | * peering too. | |
5200 | */ | |
5201 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5202 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5203 | BGP_VRF_IMPORT_RT_CFGD)) | |
5204 | mask_ecom_global_admin(&eval_tmp, eval); | |
5205 | ||
5206 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5207 | if (irt) | |
5208 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5209 | } | |
5210 | } | |
5211 | } | |
5212 | ||
5213 | ||
128ea8ab | 5214 | /* |
5215 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5216 | * The mapping will be used during route processing. | |
5217 | */ | |
d62a17ae | 5218 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5219 | { |
d62a17ae | 5220 | int i; |
5221 | struct ecommunity_val *eval; | |
5222 | struct listnode *node, *nnode; | |
5223 | struct ecommunity *ecom; | |
128ea8ab | 5224 | |
d62a17ae | 5225 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5226 | for (i = 0; i < ecom->size; i++) { | |
5227 | eval = (struct ecommunity_val *)(ecom->val | |
5228 | + (i | |
5229 | * ECOMMUNITY_SIZE)); | |
5230 | map_vni_to_rt(bgp, vpn, eval); | |
5231 | } | |
5232 | } | |
128ea8ab | 5233 | } |
5234 | ||
5235 | /* | |
5236 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5237 | */ | |
d62a17ae | 5238 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5239 | { |
d62a17ae | 5240 | int i; |
5241 | struct ecommunity_val *eval; | |
5242 | struct listnode *node, *nnode; | |
5243 | struct ecommunity *ecom; | |
128ea8ab | 5244 | |
d62a17ae | 5245 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5246 | for (i = 0; i < ecom->size; i++) { | |
5247 | struct irt_node *irt; | |
5248 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5249 | |
d62a17ae | 5250 | eval = (struct ecommunity_val *)(ecom->val |
5251 | + (i | |
5252 | * ECOMMUNITY_SIZE)); | |
5253 | /* If using "automatic" RT, we only care about the | |
5254 | * local-admin sub-field. | |
5255 | * This is to facilitate using VNI as the RT for EBGP | |
5256 | * peering too. | |
5257 | */ | |
5258 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5259 | if (!is_import_rt_configured(vpn)) | |
5260 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5261 | |
d62a17ae | 5262 | irt = lookup_import_rt(bgp, &eval_tmp); |
5263 | if (irt) | |
5264 | unmap_vni_from_rt(bgp, vpn, irt); | |
5265 | } | |
5266 | } | |
128ea8ab | 5267 | } |
5268 | ||
5269 | /* | |
5270 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5271 | * The mapping will be used during route processing. | |
5272 | */ | |
d62a17ae | 5273 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5274 | { |
c581d8b0 | 5275 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5276 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5277 | |
d62a17ae | 5278 | /* Map RT to VNI */ |
5279 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5280 | } |
5281 | ||
5282 | /* | |
5283 | * Derive Export RT automatically for VNI. | |
5284 | */ | |
d62a17ae | 5285 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5286 | { |
c581d8b0 | 5287 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5288 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5289 | } |
5290 | ||
676f83b9 | 5291 | /* |
5292 | * Derive RD automatically for VNI using passed information - it | |
5293 | * is of the form RouterId:unique-id-for-vni. | |
5294 | */ | |
5295 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5296 | { | |
9e97ff03 CS |
5297 | if (is_vrf_rd_configured(bgp)) |
5298 | return; | |
5299 | ||
92708db6 | 5300 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5301 | } |
5302 | ||
128ea8ab | 5303 | /* |
5304 | * Derive RD automatically for VNI using passed information - it | |
5305 | * is of the form RouterId:unique-id-for-vni. | |
5306 | */ | |
d62a17ae | 5307 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5308 | { |
d62a17ae | 5309 | char buf[100]; |
128ea8ab | 5310 | |
d62a17ae | 5311 | vpn->prd.family = AF_UNSPEC; |
5312 | vpn->prd.prefixlen = 64; | |
5313 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5314 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5315 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5316 | } |
5317 | ||
7df407ed CS |
5318 | /* |
5319 | * Lookup L3-VNI | |
5320 | */ | |
5321 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5322 | { | |
5323 | struct list *inst = bm->bgp; | |
5324 | struct listnode *node; | |
5325 | struct bgp *bgp_vrf; | |
5326 | ||
5327 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5328 | if (bgp_vrf->l3vni == vni) | |
5329 | return true; | |
5330 | } | |
5331 | ||
5332 | return false; | |
5333 | } | |
5334 | ||
128ea8ab | 5335 | /* |
5336 | * Lookup VNI. | |
5337 | */ | |
d62a17ae | 5338 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5339 | { |
d62a17ae | 5340 | struct bgpevpn *vpn; |
5341 | struct bgpevpn tmp; | |
128ea8ab | 5342 | |
d62a17ae | 5343 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5344 | tmp.vni = vni; | |
5345 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5346 | return vpn; | |
128ea8ab | 5347 | } |
5348 | ||
5349 | /* | |
5350 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5351 | */ | |
d62a17ae | 5352 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5353 | struct in_addr originator_ip, |
5354 | vrf_id_t tenant_vrf_id, | |
5355 | struct in_addr mcast_grp) | |
128ea8ab | 5356 | { |
d62a17ae | 5357 | struct bgpevpn *vpn; |
128ea8ab | 5358 | |
d62a17ae | 5359 | if (!bgp) |
5360 | return NULL; | |
128ea8ab | 5361 | |
d62a17ae | 5362 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5363 | |
d62a17ae | 5364 | /* Set values - RD and RT set to defaults. */ |
5365 | vpn->vni = vni; | |
5366 | vpn->originator_ip = originator_ip; | |
29c53922 | 5367 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5368 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5369 | |
d62a17ae | 5370 | /* Initialize route-target import and export lists */ |
5371 | vpn->import_rtl = list_new(); | |
5372 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5373 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5374 | vpn->export_rtl = list_new(); |
5375 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5376 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5377 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5378 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5379 | |
d62a17ae | 5380 | /* Initialize EVPN route table. */ |
960035b2 | 5381 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5382 | |
d62a17ae | 5383 | /* Add to hash */ |
5384 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5385 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5386 | return NULL; | |
5387 | } | |
6a8657d0 MK |
5388 | |
5389 | /* add to l2vni list on corresponding vrf */ | |
5390 | bgpevpn_link_to_l3vni(vpn); | |
5391 | ||
d62a17ae | 5392 | QOBJ_REG(vpn, bgpevpn); |
5393 | return vpn; | |
128ea8ab | 5394 | } |
5395 | ||
5396 | /* | |
5397 | * Free a given VPN - called in multiple scenarios such as zebra | |
5398 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5399 | * This just frees appropriate memory, caller should have taken other | |
5400 | * needed actions. | |
5401 | */ | |
d62a17ae | 5402 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5403 | { |
6a8657d0 | 5404 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5405 | bgp_table_unlock(vpn->route_table); |
5406 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5407 | list_delete(&vpn->import_rtl); |
5408 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5409 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5410 | hash_release(bgp->vnihash, vpn); |
5411 | QOBJ_UNREG(vpn); | |
5412 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5413 | } |
5414 | ||
5415 | /* | |
50f74cf1 | 5416 | * Lookup local ES. |
5417 | */ | |
5418 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5419 | { | |
5420 | struct evpnes *es; | |
5421 | struct evpnes tmp; | |
5422 | ||
5423 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5424 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5425 | es = hash_lookup(bgp->esihash, &tmp); | |
5426 | return es; | |
5427 | } | |
5428 | ||
5429 | /* | |
5430 | * Create a new local es - invoked upon zebra notification. | |
5431 | */ | |
5432 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5433 | esi_t *esi, | |
5434 | struct ipaddr *originator_ip) | |
5435 | { | |
5436 | char buf[100]; | |
5437 | struct evpnes *es; | |
5438 | ||
5439 | if (!bgp) | |
5440 | return NULL; | |
5441 | ||
5442 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5443 | |
5444 | /* set the ESI and originator_ip */ | |
5445 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5446 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5447 | ||
5448 | /* Initialise the VTEP list */ | |
5449 | es->vtep_list = list_new(); | |
ce167790 | 5450 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5451 | |
5452 | /* auto derive RD for this es */ | |
5453 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5454 | es->prd.family = AF_UNSPEC; | |
5455 | es->prd.prefixlen = 64; | |
5456 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5457 | (void)str2prefix_rd(buf, &es->prd); | |
5458 | ||
5459 | /* Initialize the ES route table */ | |
5460 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5461 | ||
5462 | /* Add to hash */ | |
5463 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5464 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5465 | return NULL; | |
5466 | } | |
5467 | ||
5468 | QOBJ_REG(es, evpnes); | |
5469 | return es; | |
5470 | } | |
5471 | ||
5472 | /* | |
5473 | * Free a given ES - | |
5474 | * This just frees appropriate memory, caller should have taken other | |
5475 | * needed actions. | |
5476 | */ | |
5477 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5478 | { | |
6a154c88 | 5479 | list_delete(&es->vtep_list); |
50f74cf1 | 5480 | bgp_table_unlock(es->route_table); |
5481 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5482 | hash_release(bgp->esihash, es); | |
5483 | QOBJ_UNREG(es); | |
5484 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5485 | } | |
5486 | ||
5487 | /* | |
5488 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5489 | */ |
d62a17ae | 5490 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5491 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5492 | { |
40381db7 | 5493 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5494 | } |
5495 | ||
5496 | /* | |
50f74cf1 | 5497 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5498 | */ |
d62a17ae | 5499 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5500 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5501 | { |
40381db7 | 5502 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5503 | } |
5504 | ||
db0e1937 MK |
5505 | /* filter routes which have martian next hops */ |
5506 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5507 | { | |
0291c246 MK |
5508 | afi_t afi; |
5509 | safi_t safi; | |
5510 | struct bgp_node *rd_rn, *rn; | |
5511 | struct bgp_table *table; | |
40381db7 | 5512 | struct bgp_path_info *pi; |
db0e1937 MK |
5513 | |
5514 | afi = AFI_L2VPN; | |
5515 | safi = SAFI_EVPN; | |
5516 | ||
5517 | /* Walk entire global routing table and evaluate routes which could be | |
5518 | * imported into this VPN. Note that we cannot just look at the routes | |
5519 | * for the VNI's RD - | |
5520 | * remote routes applicable for this VNI could have any RD. | |
5521 | */ | |
5522 | /* EVPN routes are a 2-level table. */ | |
5523 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5524 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5525 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5526 | if (!table) |
5527 | continue; | |
5528 | ||
5529 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5530 | ||
6f94b685 DS |
5531 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5532 | pi = pi->next) { | |
db0e1937 MK |
5533 | |
5534 | /* Consider "valid" remote routes applicable for | |
5535 | * this VNI. */ | |
40381db7 DS |
5536 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5537 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5538 | continue; |
949b0f24 | 5539 | if (bgp_nexthop_self(bgp, afi, |
5540 | pi->type, pi->sub_type, | |
5541 | pi->attr, rn)) { | |
db0e1937 | 5542 | |
8ba71050 | 5543 | char attr_str[BUFSIZ] = {0}; |
db0e1937 MK |
5544 | char pbuf[PREFIX_STRLEN]; |
5545 | ||
40381db7 | 5546 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5547 | BUFSIZ); |
5548 | ||
40381db7 | 5549 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5550 | NULL, 1)) |
5551 | zlog_debug( | |
b682f6de | 5552 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5553 | bgp->vrf_id, |
5554 | prefix2str( | |
60466a63 | 5555 | &rn->p, pbuf, |
db0e1937 MK |
5556 | sizeof(pbuf)), |
5557 | attr_str); | |
5558 | ||
5559 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5560 | &rn->p, pi); |
db0e1937 | 5561 | |
40381db7 | 5562 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5563 | safi); |
db0e1937 | 5564 | } |
db0e1937 MK |
5565 | } |
5566 | } | |
5567 | } | |
5568 | ||
5569 | return 0; | |
5570 | } | |
5571 | ||
128ea8ab | 5572 | /* |
5573 | * Handle del of a local MACIP. | |
5574 | */ | |
d62a17ae | 5575 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5576 | struct ipaddr *ip, int state) |
128ea8ab | 5577 | { |
d62a17ae | 5578 | struct bgpevpn *vpn; |
5579 | struct prefix_evpn p; | |
ec0ab544 | 5580 | struct bgp_node *rn; |
128ea8ab | 5581 | |
d62a17ae | 5582 | /* Lookup VNI hash - should exist. */ |
5583 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5584 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5585 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5586 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5587 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5588 | return -1; | |
5589 | } | |
128ea8ab | 5590 | |
d62a17ae | 5591 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5592 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5593 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5594 | delete_evpn_route(bgp, vpn, &p); | |
5595 | } else { | |
5596 | /* Re-instate the current remote best path if any */ | |
5597 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5598 | if (rn) | |
5599 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5600 | } | |
128ea8ab | 5601 | |
d62a17ae | 5602 | return 0; |
128ea8ab | 5603 | } |
5604 | ||
5605 | /* | |
5606 | * Handle add of a local MACIP. | |
5607 | */ | |
d62a17ae | 5608 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5609 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5610 | { |
d62a17ae | 5611 | struct bgpevpn *vpn; |
5612 | struct prefix_evpn p; | |
128ea8ab | 5613 | |
d62a17ae | 5614 | /* Lookup VNI hash - should exist. */ |
5615 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5616 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5617 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5618 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5619 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5620 | return -1; | |
5621 | } | |
128ea8ab | 5622 | |
d62a17ae | 5623 | /* Create EVPN type-2 route and schedule for processing. */ |
5624 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5625 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5626 | char buf[ETHER_ADDR_STRLEN]; |
5627 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5628 | |
af4c2728 | 5629 | flog_err( |
e50f7cfd | 5630 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5631 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5632 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5633 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5634 | ? "sticky gateway" | |
5635 | : "", | |
d62a17ae | 5636 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5637 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5638 | return -1; |
5639 | } | |
128ea8ab | 5640 | |
d62a17ae | 5641 | return 0; |
128ea8ab | 5642 | } |
5643 | ||
e3b78da8 | 5644 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5645 | struct bgp *bgp_vrf) |
5646 | { | |
e3b78da8 | 5647 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5648 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5649 | |
5e53dce3 T |
5650 | bgp_evpn = bgp_get_evpn(); |
5651 | assert(bgp_evpn); | |
6a8657d0 | 5652 | |
6a8657d0 MK |
5653 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5654 | bgpevpn_link_to_l3vni(vpn); | |
5655 | } | |
5656 | ||
14e814ea CS |
5657 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5658 | struct ethaddr *svi_rmac, | |
5659 | struct ethaddr *vrr_rmac, | |
0483af6e | 5660 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5661 | ifindex_t svi_ifindex, |
5662 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5663 | { |
5664 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5665 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5666 | struct listnode *node = NULL; |
5667 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5668 | as_t as = 0; |
5669 | ||
3621ebc5 | 5670 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5671 | * auto-creatio |
5672 | */ | |
5e53dce3 T |
5673 | bgp_evpn = bgp_get_evpn(); |
5674 | if (!bgp_evpn) { | |
af4c2728 | 5675 | flog_err( |
e50f7cfd | 5676 | EC_BGP_NO_DFLT, |
3621ebc5 | 5677 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5678 | l3vni); |
fe1dc5a3 MK |
5679 | return -1; |
5680 | } | |
5e53dce3 | 5681 | as = bgp_evpn->as; |
fe1dc5a3 | 5682 | |
0437e105 | 5683 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5684 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5685 | if (!bgp_vrf) { |
5686 | ||
5687 | int ret = 0; | |
5688 | ||
5689 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
3621ebc5 T |
5690 | vrf_id == VRF_DEFAULT ? BGP_INSTANCE_TYPE_DEFAULT |
5691 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5692 | switch (ret) { |
fe1dc5a3 | 5693 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5694 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5695 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5696 | return -1; |
5697 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5698 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5699 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5700 | return -1; |
5701 | } | |
5702 | ||
5703 | /* mark as auto created */ | |
5704 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5705 | } | |
5706 | ||
0483af6e | 5707 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5708 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5709 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5710 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5711 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5712 | |
14e814ea CS |
5713 | /* copy anycast MAC from VRR MAC */ |
5714 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5715 | /* copy sys RMAC from SVI MAC */ | |
5716 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5717 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5718 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5719 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5720 | ||
5721 | if (bgp_debug_zebra(NULL)) { | |
5722 | char buf[ETHER_ADDR_STRLEN]; | |
5723 | char buf1[ETHER_ADDR_STRLEN]; | |
5724 | char buf2[ETHER_ADDR_STRLEN]; | |
5725 | ||
5726 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5727 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5728 | bgp_vrf->l3vni, | |
5729 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5730 | : "disable", | |
5731 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5732 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5733 | buf1, sizeof(buf1)), | |
5734 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5735 | buf2, sizeof(buf2)), | |
5736 | is_anycast_mac ? "Enable" : "Disable"); | |
5737 | } | |
c48d9f5f MK |
5738 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5739 | if (filter) | |
5740 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5741 | ||
530e8a6e | 5742 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5743 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5744 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5745 | else |
5746 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5747 | ||
c581d8b0 MK |
5748 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5749 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5750 | |
5751 | /* auto derive RD */ | |
676f83b9 | 5752 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5753 | |
6a8657d0 | 5754 | /* link all corresponding l2vnis */ |
5e53dce3 | 5755 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5756 | (void (*)(struct hash_bucket *, |
996c9314 | 5757 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5758 | bgp_vrf); |
5759 | ||
c48d9f5f MK |
5760 | /* Only update all corresponding type-2 routes if we are advertising two |
5761 | * labels along with type-2 routes | |
5762 | */ | |
5763 | if (!filter) | |
5764 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5765 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5766 | |
06d2e8f3 MK |
5767 | /* advertise type-5 routes if needed */ |
5768 | update_advertise_vrf_routes(bgp_vrf); | |
5769 | ||
5ba238b7 MK |
5770 | /* install all remote routes belonging to this l3vni into correspondng |
5771 | * vrf */ | |
5772 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5773 | |
5774 | return 0; | |
5775 | } | |
5776 | ||
996c9314 | 5777 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5778 | { |
5779 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5780 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5781 | struct listnode *node = NULL; |
18abc1eb | 5782 | struct listnode *next = NULL; |
f1f8b53c | 5783 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5784 | |
5785 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5786 | if (!bgp_vrf) { | |
af4c2728 | 5787 | flog_err( |
e50f7cfd | 5788 | EC_BGP_NO_DFLT, |
996c9314 LB |
5789 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5790 | l3vni); | |
fe1dc5a3 MK |
5791 | return -1; |
5792 | } | |
5793 | ||
5e53dce3 T |
5794 | bgp_evpn = bgp_get_evpn(); |
5795 | if (!bgp_evpn) { | |
af4c2728 | 5796 | flog_err( |
e50f7cfd | 5797 | EC_BGP_NO_DFLT, |
3621ebc5 | 5798 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5799 | l3vni); |
f1f8b53c MK |
5800 | return -1; |
5801 | } | |
5802 | ||
d846168d | 5803 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5804 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5805 | * routes. This will uninstalling the routes from zebra and decremnt the |
5806 | * bgp info count. | |
523cafc4 | 5807 | */ |
d846168d | 5808 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5809 | |
06d2e8f3 MK |
5810 | /* delete/withdraw all type-5 routes */ |
5811 | delete_withdraw_vrf_routes(bgp_vrf); | |
5812 | ||
fe1dc5a3 MK |
5813 | /* remove the l3vni from vrf instance */ |
5814 | bgp_vrf->l3vni = 0; | |
5815 | ||
5816 | /* remove the Rmac from the BGP vrf */ | |
5817 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5818 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5819 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5820 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5821 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5822 | |
530e8a6e | 5823 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5824 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5825 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5826 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5827 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5828 | } |
530e8a6e CS |
5829 | |
5830 | /* remove default export RT */ | |
5831 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5832 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5833 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5834 | } |
fe1dc5a3 | 5835 | |
f1f8b53c | 5836 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5837 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5838 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5839 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5840 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5841 | } |
5842 | } | |
fe1dc5a3 | 5843 | |
18abc1eb | 5844 | /* If any L2VNIs point to this instance, unlink them. */ |
5845 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5846 | bgpevpn_unlink_from_l3vni(vpn); | |
5847 | ||
ff9d54fb CS |
5848 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5849 | ||
fe1dc5a3 MK |
5850 | /* Delete the instance if it was autocreated */ |
5851 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5852 | bgp_delete(bgp_vrf); | |
5853 | ||
5854 | return 0; | |
5855 | } | |
5856 | ||
128ea8ab | 5857 | /* |
5858 | * Handle del of a local VNI. | |
5859 | */ | |
d62a17ae | 5860 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5861 | { |
d62a17ae | 5862 | struct bgpevpn *vpn; |
128ea8ab | 5863 | |
d62a17ae | 5864 | /* Locate VNI hash */ |
5865 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5866 | if (!vpn) { | |
1e00627b | 5867 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5868 | flog_warn( |
e50f7cfd | 5869 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5870 | "%u: VNI hash entry for VNI %u not found at DEL", |
5871 | bgp->vrf_id, vni); | |
d62a17ae | 5872 | return 0; |
5873 | } | |
128ea8ab | 5874 | |
d62a17ae | 5875 | /* Remove all local EVPN routes and schedule for processing (to |
5876 | * withdraw from peers). | |
5877 | */ | |
5878 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5879 | |
db0e1937 MK |
5880 | /* |
5881 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5882 | */ | |
5883 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5884 | ||
d62a17ae | 5885 | /* Clear "live" flag and see if hash needs to be freed. */ |
5886 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5887 | if (!is_vni_configured(vpn)) | |
5888 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5889 | |
d62a17ae | 5890 | return 0; |
128ea8ab | 5891 | } |
5892 | ||
5893 | /* | |
d1911c26 | 5894 | * Handle add (or update) of a local VNI. The VNI changes we care |
5895 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5896 | */ |
d62a17ae | 5897 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5898 | struct in_addr originator_ip, |
5899 | vrf_id_t tenant_vrf_id, | |
5900 | struct in_addr mcast_grp) | |
5901 | ||
d62a17ae | 5902 | { |
5903 | struct bgpevpn *vpn; | |
5904 | struct prefix_evpn p; | |
5905 | ||
d62a17ae | 5906 | /* Lookup VNI. If present and no change, exit. */ |
5907 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5908 | if (vpn) { |
29c53922 | 5909 | |
d1911c26 | 5910 | if (is_vni_live(vpn) |
5911 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5912 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5913 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5914 | /* Probably some other param has changed that we don't | |
5915 | * care about. */ | |
5916 | return 0; | |
5917 | ||
76d07c7a AK |
5918 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5919 | ||
d1911c26 | 5920 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5921 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5922 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5923 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5924 | bgpevpn_link_to_l3vni(vpn); |
5925 | } | |
29c53922 | 5926 | |
d1911c26 | 5927 | /* If tunnel endpoint IP has changed, update (and delete prior |
5928 | * type-3 route, if needed.) | |
5929 | */ | |
5930 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5931 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5932 | |
d1911c26 | 5933 | /* Update all routes with new endpoint IP and/or export RT |
5934 | * for VRFs | |
5935 | */ | |
5936 | if (is_vni_live(vpn)) | |
5937 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5938 | } |
5939 | ||
5940 | /* Create or update as appropriate. */ | |
5941 | if (!vpn) { | |
76d07c7a AK |
5942 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5943 | mcast_grp); | |
d62a17ae | 5944 | if (!vpn) { |
af4c2728 | 5945 | flog_err( |
e50f7cfd | 5946 | EC_BGP_VNI, |
d62a17ae | 5947 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5948 | bgp->vrf_id, vni); | |
5949 | return -1; | |
5950 | } | |
5951 | } | |
5952 | ||
db0e1937 | 5953 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5954 | if (is_vni_live(vpn)) |
5955 | return 0; | |
5956 | ||
d62a17ae | 5957 | /* Mark as "live" */ |
5958 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5959 | ||
db0e1937 MK |
5960 | /* tunnel is now active, add tunnel-ip to db */ |
5961 | bgp_tip_add(bgp, &originator_ip); | |
5962 | ||
5963 | /* filter routes as nexthop database has changed */ | |
5964 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5965 | ||
fd069644 DS |
5966 | /* |
5967 | * Create EVPN type-3 route and schedule for processing. | |
5968 | * | |
5969 | * RT-3 only if doing head-end replication | |
5970 | */ | |
833b8a50 AK |
5971 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5972 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
5973 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
5974 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
5975 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
5976 | "%u: Type3 route creation failure for VNI %u", | |
5977 | bgp->vrf_id, vni); | |
5978 | return -1; | |
5979 | } | |
d62a17ae | 5980 | } |
5981 | ||
5982 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5983 | * VNI, | |
5984 | * install them. | |
5985 | */ | |
5986 | install_routes_for_vni(bgp, vpn); | |
5987 | ||
d7d97010 MK |
5988 | /* If we are advertising gateway mac-ip |
5989 | It needs to be conveyed again to zebra */ | |
5990 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5991 | ||
df070e6f CS |
5992 | /* advertise svi mac-ip knob to zebra */ |
5993 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5994 | ||
d62a17ae | 5995 | return 0; |
b18825eb | 5996 | } |
14c1a7bf | 5997 | |
50f74cf1 | 5998 | /* |
5999 | * bgp_evpn_local_es_del | |
6000 | */ | |
6001 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
6002 | esi_t *esi, | |
6003 | struct ipaddr *originator_ip) | |
6004 | { | |
6005 | char buf[ESI_STR_LEN]; | |
6006 | struct evpnes *es = NULL; | |
6007 | ||
6008 | if (!bgp->esihash) { | |
e50f7cfd | 6009 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6010 | bgp->vrf_id); |
50f74cf1 | 6011 | return -1; |
6012 | } | |
6013 | ||
6014 | /* Lookup ESI hash - should exist. */ | |
6015 | es = bgp_evpn_lookup_es(bgp, esi); | |
6016 | if (!es) { | |
e50f7cfd | 6017 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
6018 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
6019 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6020 | return -1; |
6021 | } | |
6022 | ||
6023 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 6024 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 6025 | */ |
6026 | delete_routes_for_es(bgp, es); | |
6027 | ||
6028 | /* free the hash entry */ | |
6029 | bgp_evpn_es_free(bgp, es); | |
6030 | ||
6031 | return 0; | |
6032 | } | |
6033 | ||
6034 | /* | |
6035 | * bgp_evpn_local_es_add | |
6036 | */ | |
6037 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
6038 | esi_t *esi, | |
6039 | struct ipaddr *originator_ip) | |
6040 | { | |
6041 | char buf[ESI_STR_LEN]; | |
6042 | struct evpnes *es = NULL; | |
6043 | struct prefix_evpn p; | |
6044 | ||
6045 | if (!bgp->esihash) { | |
e50f7cfd | 6046 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6047 | bgp->vrf_id); |
50f74cf1 | 6048 | return -1; |
6049 | } | |
6050 | ||
6051 | /* create the new es */ | |
2bb9eff4 | 6052 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 6053 | if (!es) { |
6054 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
6055 | if (!es) { | |
af4c2728 | 6056 | flog_err( |
e50f7cfd | 6057 | EC_BGP_ES_CREATE, |
50f74cf1 | 6058 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
6059 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
6060 | return -1; | |
6061 | } | |
6062 | } | |
6063 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
6064 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
6065 | ||
6066 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
6067 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 6068 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
6069 | "%u: Type4 route creation failure for ESI %s", |
6070 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6071 | return -1; |
6072 | } | |
6073 | ||
6074 | /* import all remote ES routes in th ES table */ | |
6075 | install_routes_for_es(bgp, es); | |
6076 | ||
6077 | return 0; | |
6078 | } | |
6079 | ||
fd069644 DS |
6080 | /* |
6081 | * Handle change in setting for BUM handling. The supported values | |
6082 | * are head-end replication and dropping all BUM packets. Any change | |
6083 | * should be registered with zebra. Also, if doing head-end replication, | |
6084 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6085 | * to be dropped, the RT-3s must be withdrawn. | |
6086 | */ | |
6087 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6088 | { | |
6089 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6090 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6091 | "Flooding" : "Flooding Disabled"); | |
6092 | ||
6093 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6094 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6095 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6096 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6097 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6098 | } | |
6099 | ||
7724c0a1 | 6100 | /* |
6101 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6102 | * EVPN routes from peers. | |
6103 | */ | |
d62a17ae | 6104 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6105 | { |
e3b78da8 | 6106 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6107 | void *))cleanup_vni_on_disable, |
6108 | bgp); | |
7724c0a1 | 6109 | } |
6110 | ||
14c1a7bf | 6111 | /* |
6112 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6113 | * BGP instance (default) is being freed. | |
6114 | */ | |
d62a17ae | 6115 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6116 | { |
1525e99f | 6117 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6118 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6119 | bgp); |
6120 | ||
6121 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 6122 | bgp->import_rt_hash = NULL; |
1525e99f DS |
6123 | |
6124 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 6125 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
6126 | |
6127 | hash_free(bgp->vnihash); | |
d62a17ae | 6128 | bgp->vnihash = NULL; |
50f74cf1 | 6129 | if (bgp->esihash) |
6130 | hash_free(bgp->esihash); | |
6131 | bgp->esihash = NULL; | |
1525e99f | 6132 | |
6a154c88 DL |
6133 | list_delete(&bgp->vrf_import_rtl); |
6134 | list_delete(&bgp->vrf_export_rtl); | |
6135 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6136 | } |
6137 | ||
6138 | /* | |
6139 | * Initialization for EVPN | |
6140 | * Create | |
6141 | * VNI hash table | |
6142 | * hash for RT to VNI | |
14c1a7bf | 6143 | */ |
d62a17ae | 6144 | void bgp_evpn_init(struct bgp *bgp) |
6145 | { | |
6146 | bgp->vnihash = | |
6147 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 6148 | bgp->esihash = |
6149 | hash_create(esi_hash_keymake, esi_cmp, | |
6150 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 6151 | bgp->import_rt_hash = |
6152 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6153 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6154 | bgp->vrf_import_rt_hash = |
6155 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6156 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6157 | bgp->vrf_import_rtl = list_new(); |
6158 | bgp->vrf_import_rtl->cmp = | |
6159 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6160 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
6161 | bgp->vrf_export_rtl = list_new(); |
6162 | bgp->vrf_export_rtl->cmp = | |
6163 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6164 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 6165 | bgp->l2vnis = list_new(); |
64465785 | 6166 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6167 | /* By default Duplicate Address Dection is enabled. |
6168 | * Max-moves (N) 5, detection time (M) 180 | |
6169 | * default action is warning-only | |
6170 | * freeze action permanently freezes address, | |
6171 | * and freeze time (auto-recovery) is disabled. | |
6172 | */ | |
6173 | if (bgp->evpn_info) { | |
6174 | bgp->evpn_info->dup_addr_detect = true; | |
6175 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6176 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6177 | bgp->evpn_info->dad_freeze = false; | |
6178 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6179 | /* Initialize zebra vxlan */ |
6180 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6181 | /* Enable PIP feature by default for bgp vrf instance */ |
6182 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6183 | struct bgp *bgp_default; | |
6184 | ||
6185 | bgp->evpn_info->advertise_pip = true; | |
6186 | bgp_default = bgp_get_default(); | |
6187 | if (bgp_default) | |
6188 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6189 | } | |
85c8d83b | 6190 | } |
fd069644 DS |
6191 | |
6192 | /* Default BUM handling is to do head-end replication. */ | |
6193 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 6194 | } |
10ebe1ab MK |
6195 | |
6196 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6197 | { | |
6198 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
6199 | } | |
44c69747 LK |
6200 | |
6201 | /* | |
6202 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6203 | */ | |
6204 | int bgp_evpn_get_type5_prefixlen(struct prefix *pfx) | |
6205 | { | |
6206 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6207 | ||
6208 | if (!pfx || pfx->family != AF_EVPN) | |
6209 | return 0; | |
6210 | ||
6211 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6212 | return 0; | |
6213 | ||
6214 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6215 | } | |
7c312383 AD |
6216 | |
6217 | /* | |
6218 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6219 | */ | |
6220 | bool bgp_evpn_is_prefix_nht_supported(struct prefix *pfx) | |
6221 | { | |
6222 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6223 | ||
6224 | /* | |
6225 | * EVPN RT-5 should not be marked as valid and imported to vrfs if the | |
6226 | * BGP nexthop is not reachable. To check for the nexthop reachability, | |
6227 | * Add nexthop for EVPN RT-5 for nexthop tracking. | |
6228 | * | |
6229 | * Ideally, a BGP route should be marked as valid only if the | |
6230 | * nexthop is reachable. Thus, other EVPN route types also should be | |
6231 | * added here after testing is performed for them. | |
6232 | */ | |
6233 | if (pfx && pfx->family == AF_EVPN && | |
6234 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) | |
6235 | return true; | |
6236 | ||
6237 | return false; | |
6238 | } |