]>
Commit | Line | Data |
---|---|---|
7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
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" |
5d5393b9 | 52 | #include "bgpd/bgp_vty.h" |
128ea8ab | 53 | |
54 | /* | |
55 | * Definitions and external declarations. | |
56 | */ | |
57 | extern struct zclient *zclient; | |
58 | ||
59 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 60 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 61 | |
62 | ||
63 | /* | |
64 | * Static function declarations | |
65 | */ | |
4b7e6066 | 66 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 67 | struct bgp_dest *dest, |
40381db7 | 68 | struct bgp_path_info **pi); |
d62a17ae | 69 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
14c1a7bf | 70 | |
71 | /* | |
72 | * Private functions. | |
73 | */ | |
74 | ||
50f74cf1 | 75 | /* compare two IPV4 VTEP IPs */ |
ce167790 | 76 | static int evpn_vtep_ip_cmp(void *p1, void *p2) |
50f74cf1 | 77 | { |
78 | const struct in_addr *ip1 = p1; | |
79 | const struct in_addr *ip2 = p2; | |
80 | ||
ce167790 | 81 | return ip1->s_addr - ip2->s_addr; |
50f74cf1 | 82 | } |
83 | ||
84 | /* | |
85 | * Make hash key for ESI. | |
86 | */ | |
d8b87afe | 87 | static unsigned int esi_hash_keymake(const void *p) |
50f74cf1 | 88 | { |
d8b87afe | 89 | const struct evpnes *pes = p; |
50f74cf1 | 90 | const void *pnt = (void *)pes->esi.val; |
91 | ||
92 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
93 | } | |
94 | ||
95 | /* | |
96 | * Compare two ESIs. | |
97 | */ | |
74df8d6d | 98 | static bool esi_cmp(const void *p1, const void *p2) |
50f74cf1 | 99 | { |
100 | const struct evpnes *pes1 = p1; | |
101 | const struct evpnes *pes2 = p2; | |
102 | ||
103 | if (pes1 == NULL && pes2 == NULL) | |
74df8d6d | 104 | return true; |
50f74cf1 | 105 | |
106 | if (pes1 == NULL || pes2 == NULL) | |
74df8d6d | 107 | return false; |
50f74cf1 | 108 | |
109 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
110 | } | |
111 | ||
14c1a7bf | 112 | /* |
113 | * Make vni hash key. | |
114 | */ | |
d8b87afe | 115 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 116 | { |
d8b87afe | 117 | const struct bgpevpn *vpn = p; |
d62a17ae | 118 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 119 | } |
120 | ||
121 | /* | |
122 | * Comparison function for vni hash | |
123 | */ | |
74df8d6d | 124 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 125 | { |
d62a17ae | 126 | const struct bgpevpn *vpn1 = p1; |
127 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 128 | |
d62a17ae | 129 | if (!vpn1 && !vpn2) |
74df8d6d | 130 | return true; |
d62a17ae | 131 | if (!vpn1 || !vpn2) |
74df8d6d | 132 | return false; |
d62a17ae | 133 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 134 | } |
135 | ||
64465785 DS |
136 | static int vni_list_cmp(void *p1, void *p2) |
137 | { | |
138 | const struct bgpevpn *vpn1 = p1; | |
139 | const struct bgpevpn *vpn2 = p2; | |
140 | ||
141 | return vpn1->vni - vpn2->vni; | |
142 | } | |
143 | ||
10ebe1ab MK |
144 | /* |
145 | * Make vrf import route target hash key. | |
146 | */ | |
d8b87afe | 147 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 148 | { |
d8b87afe QY |
149 | const struct vrf_irt_node *irt = p; |
150 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
151 | |
152 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
153 | } |
154 | ||
155 | /* | |
156 | * Comparison function for vrf import rt hash | |
157 | */ | |
74df8d6d | 158 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
159 | { |
160 | const struct vrf_irt_node *irt1 = p1; | |
161 | const struct vrf_irt_node *irt2 = p2; | |
162 | ||
163 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 164 | return true; |
10ebe1ab MK |
165 | |
166 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 167 | return false; |
10ebe1ab MK |
168 | |
169 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
170 | } | |
171 | ||
172 | /* | |
f9b8094e | 173 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
174 | */ |
175 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
176 | { | |
5e53dce3 | 177 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
178 | struct vrf_irt_node *irt; |
179 | ||
5e53dce3 T |
180 | bgp_evpn = bgp_get_evpn(); |
181 | if (!bgp_evpn) { | |
e50f7cfd | 182 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 183 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
184 | return NULL; |
185 | } | |
186 | ||
187 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
188 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
189 | |
190 | irt->rt = *rt; | |
191 | irt->vrfs = list_new(); | |
192 | ||
193 | /* Add to hash */ | |
5e53dce3 | 194 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
195 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
196 | return NULL; | |
197 | } | |
198 | ||
199 | return irt; | |
200 | } | |
201 | ||
202 | /* | |
203 | * Free the vrf import rt node | |
204 | */ | |
205 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
206 | { | |
5e53dce3 | 207 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 208 | |
5e53dce3 T |
209 | bgp_evpn = bgp_get_evpn(); |
210 | if (!bgp_evpn) { | |
e50f7cfd | 211 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 212 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
213 | return; |
214 | } | |
215 | ||
5e53dce3 | 216 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 217 | list_delete(&irt->vrfs); |
10ebe1ab MK |
218 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
219 | } | |
220 | ||
221 | /* | |
222 | * Function to lookup Import RT node - used to map a RT to set of | |
223 | * VNIs importing routes with that RT. | |
224 | */ | |
225 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
226 | { | |
5e53dce3 | 227 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
228 | struct vrf_irt_node *irt; |
229 | struct vrf_irt_node tmp; | |
230 | ||
5e53dce3 T |
231 | bgp_evpn = bgp_get_evpn(); |
232 | if (!bgp_evpn) { | |
f9b8094e T |
233 | flog_err( |
234 | EC_BGP_NO_DFLT, | |
235 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
236 | return NULL; |
237 | } | |
238 | ||
239 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
240 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 241 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
242 | return irt; |
243 | } | |
244 | ||
245 | /* | |
246 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
247 | */ | |
996c9314 | 248 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
249 | { |
250 | struct listnode *node = NULL, *nnode = NULL; | |
251 | struct bgp *tmp_bgp_vrf = NULL; | |
252 | ||
253 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
254 | if (tmp_bgp_vrf == bgp_vrf) | |
255 | return 1; | |
256 | } | |
257 | return 0; | |
258 | } | |
259 | ||
14c1a7bf | 260 | /* |
261 | * Make import route target hash key. | |
262 | */ | |
d8b87afe | 263 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 264 | { |
d8b87afe QY |
265 | const struct irt_node *irt = p; |
266 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
267 | |
268 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 269 | } |
270 | ||
271 | /* | |
272 | * Comparison function for import rt hash | |
273 | */ | |
74df8d6d | 274 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 275 | { |
d62a17ae | 276 | const struct irt_node *irt1 = p1; |
277 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 278 | |
d62a17ae | 279 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 280 | return true; |
14c1a7bf | 281 | |
d62a17ae | 282 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 283 | return false; |
14c1a7bf | 284 | |
d62a17ae | 285 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 286 | } |
287 | ||
7724c0a1 | 288 | /* |
128ea8ab | 289 | * Create a new import_rt |
290 | */ | |
d62a17ae | 291 | static struct irt_node *import_rt_new(struct bgp *bgp, |
292 | struct ecommunity_val *rt) | |
128ea8ab | 293 | { |
d62a17ae | 294 | struct irt_node *irt; |
128ea8ab | 295 | |
d62a17ae | 296 | if (!bgp) |
297 | return NULL; | |
128ea8ab | 298 | |
d62a17ae | 299 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 300 | |
d62a17ae | 301 | irt->rt = *rt; |
302 | irt->vnis = list_new(); | |
128ea8ab | 303 | |
d62a17ae | 304 | /* Add to hash */ |
305 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
306 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
307 | return NULL; | |
308 | } | |
128ea8ab | 309 | |
d62a17ae | 310 | return irt; |
128ea8ab | 311 | } |
312 | ||
313 | /* | |
314 | * Free the import rt node | |
7724c0a1 | 315 | */ |
d62a17ae | 316 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 317 | { |
d62a17ae | 318 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 319 | list_delete(&irt->vnis); |
d62a17ae | 320 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 321 | } |
322 | ||
14c1a7bf | 323 | /* |
128ea8ab | 324 | * Function to lookup Import RT node - used to map a RT to set of |
325 | * VNIs importing routes with that RT. | |
326 | */ | |
d62a17ae | 327 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
328 | struct ecommunity_val *rt) | |
128ea8ab | 329 | { |
d62a17ae | 330 | struct irt_node *irt; |
331 | struct irt_node tmp; | |
128ea8ab | 332 | |
d62a17ae | 333 | memset(&tmp, 0, sizeof(struct irt_node)); |
334 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
335 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
336 | return irt; | |
128ea8ab | 337 | } |
338 | ||
339 | /* | |
340 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
341 | */ | |
d62a17ae | 342 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 343 | { |
d62a17ae | 344 | struct listnode *node, *nnode; |
345 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 346 | |
d62a17ae | 347 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
348 | if (tmp_vpn == vpn) | |
349 | return 1; | |
350 | } | |
128ea8ab | 351 | |
d62a17ae | 352 | return 0; |
128ea8ab | 353 | } |
354 | ||
355 | /* | |
356 | * Compare Route Targets. | |
357 | */ | |
d62a17ae | 358 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
359 | struct ecommunity *ecom2) | |
128ea8ab | 360 | { |
d62a17ae | 361 | if (ecom1 && !ecom2) |
362 | return -1; | |
128ea8ab | 363 | |
d62a17ae | 364 | if (!ecom1 && ecom2) |
365 | return 1; | |
128ea8ab | 366 | |
d62a17ae | 367 | if (!ecom1 && !ecom2) |
368 | return 0; | |
128ea8ab | 369 | |
d62a17ae | 370 | if (ecom1->str && !ecom2->str) |
371 | return -1; | |
128ea8ab | 372 | |
d62a17ae | 373 | if (!ecom1->str && ecom2->str) |
374 | return 1; | |
128ea8ab | 375 | |
d62a17ae | 376 | if (!ecom1->str && !ecom2->str) |
377 | return 0; | |
128ea8ab | 378 | |
d62a17ae | 379 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 380 | } |
381 | ||
987d8198 DS |
382 | static void evpn_xxport_delete_ecomm(void *val) |
383 | { | |
384 | struct ecommunity *ecomm = val; | |
385 | ecommunity_free(&ecomm); | |
386 | } | |
387 | ||
128ea8ab | 388 | /* |
389 | * Mask off global-admin field of specified extended community (RT), | |
390 | * just retain the local-admin field. | |
391 | */ | |
d62a17ae | 392 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
393 | struct ecommunity_val *src) | |
128ea8ab | 394 | { |
d7c0a89a | 395 | uint8_t type; |
128ea8ab | 396 | |
d62a17ae | 397 | type = src->val[0]; |
398 | dst->val[0] = 0; | |
399 | if (type == ECOMMUNITY_ENCODE_AS) { | |
400 | dst->val[2] = dst->val[3] = 0; | |
401 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
402 | || type == ECOMMUNITY_ENCODE_IP) { | |
403 | dst->val[2] = dst->val[3] = 0; | |
404 | dst->val[4] = dst->val[5] = 0; | |
405 | } | |
128ea8ab | 406 | } |
407 | ||
10ebe1ab MK |
408 | /* |
409 | * Map one RT to specified VRF. | |
410 | * bgp_vrf = BGP vrf instance | |
411 | */ | |
996c9314 | 412 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
413 | { |
414 | struct vrf_irt_node *irt = NULL; | |
415 | struct ecommunity_val eval_tmp; | |
416 | ||
417 | /* If using "automatic" RT, | |
418 | * we only care about the local-admin sub-field. | |
419 | * This is to facilitate using L3VNI(VRF-VNI) | |
420 | * as the RT for EBGP peering too. | |
421 | */ | |
422 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 423 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
424 | mask_ecom_global_admin(&eval_tmp, eval); |
425 | ||
426 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
427 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
428 | /* Already mapped. */ | |
429 | return; | |
10ebe1ab | 430 | |
e066d6d0 | 431 | if (!irt) |
10ebe1ab | 432 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
433 | |
434 | /* Add VRF to the list for this RT. */ | |
435 | listnode_add(irt->vrfs, bgp_vrf); | |
436 | } | |
437 | ||
438 | /* | |
439 | * Unmap specified VRF from specified RT. If there are no other | |
440 | * VRFs for this RT, then the RT hash is deleted. | |
441 | * bgp_vrf: BGP VRF specific instance | |
442 | */ | |
996c9314 | 443 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
444 | { |
445 | /* Delete VRF from list for this RT. */ | |
446 | listnode_delete(irt->vrfs, bgp_vrf); | |
447 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
448 | vrf_import_rt_free(irt); |
449 | } | |
450 | } | |
451 | ||
128ea8ab | 452 | /* |
453 | * Map one RT to specified VNI. | |
14c1a7bf | 454 | */ |
d62a17ae | 455 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
456 | struct ecommunity_val *eval) | |
128ea8ab | 457 | { |
d62a17ae | 458 | struct irt_node *irt; |
459 | struct ecommunity_val eval_tmp; | |
128ea8ab | 460 | |
d62a17ae | 461 | /* If using "automatic" RT, we only care about the local-admin |
462 | * sub-field. | |
463 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
464 | */ | |
465 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
466 | if (!is_import_rt_configured(vpn)) | |
467 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 468 | |
d62a17ae | 469 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 470 | if (irt) |
d62a17ae | 471 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
472 | /* Already mapped. */ | |
473 | return; | |
128ea8ab | 474 | |
d62a17ae | 475 | if (!irt) { |
476 | irt = import_rt_new(bgp, &eval_tmp); | |
477 | assert(irt); | |
478 | } | |
128ea8ab | 479 | |
d62a17ae | 480 | /* Add VNI to the hash list for this RT. */ |
481 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 482 | } |
483 | ||
484 | /* | |
485 | * Unmap specified VNI from specified RT. If there are no other | |
486 | * VNIs for this RT, then the RT hash is deleted. | |
487 | */ | |
d62a17ae | 488 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
489 | struct irt_node *irt) | |
14c1a7bf | 490 | { |
d62a17ae | 491 | /* Delete VNI from hash list for this RT. */ |
492 | listnode_delete(irt->vnis, vpn); | |
493 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 494 | import_rt_free(bgp, irt); |
495 | } | |
14c1a7bf | 496 | } |
497 | ||
0ca10580 | 498 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 499 | const struct prefix_evpn *p, |
0ca10580 CS |
500 | struct attr *attr, uint8_t flags) |
501 | { | |
502 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
503 | ||
504 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
505 | if (!bgp_vrf) | |
506 | return; | |
507 | ||
b96cafa3 CS |
508 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
509 | return; | |
510 | ||
511 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
512 | * in case of route is self MAC-IP, | |
513 | * advertise-pip and advertise-svi-ip features | |
514 | * are enabled. | |
515 | * Otherwise, for all host MAC-IP route's | |
27727001 | 516 | * copy anycast RMAC. |
b96cafa3 CS |
517 | */ |
518 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
519 | && bgp_vrf->evpn_info->advertise_pip && | |
520 | bgp_vrf->evpn_info->is_anycast_mac) { | |
521 | /* copy sys rmac */ | |
522 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
523 | ETH_ALEN); | |
524 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
525 | attr->mp_nexthop_global_in = | |
526 | bgp_vrf->evpn_info->pip_ip; | |
527 | } else | |
528 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 529 | } |
b96cafa3 | 530 | |
128ea8ab | 531 | /* |
532 | * Create RT extended community automatically from passed information: | |
533 | * of the form AS:VNI. | |
534 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
535 | * the need is to get a RT value that will be unique across different | |
536 | * VNIs but the same across routers (in the same AS) for a particular | |
537 | * VNI. | |
538 | */ | |
c581d8b0 | 539 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 540 | { |
d62a17ae | 541 | struct ecommunity_val eval; |
b90d4580 CS |
542 | struct ecommunity *ecomadd, *ecom; |
543 | bool ecom_found = false; | |
544 | struct listnode *node; | |
128ea8ab | 545 | |
bf1061d8 VB |
546 | if (bgp->advertise_autort_rfc8365) |
547 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 548 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 549 | |
d62a17ae | 550 | ecomadd = ecommunity_new(); |
1207a5bc | 551 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
552 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
553 | if (ecommunity_cmp(ecomadd, ecom)) | |
554 | ecom_found = true; | |
555 | ||
556 | if (!ecom_found) | |
557 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 558 | } |
14c1a7bf | 559 | |
560 | /* | |
128ea8ab | 561 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
562 | * creation of a VNI. | |
563 | */ | |
d62a17ae | 564 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 565 | { |
d62a17ae | 566 | bgp_evpn_derive_auto_rd(bgp, vpn); |
567 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
568 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 569 | } |
570 | ||
1ec31309 | 571 | /* |
572 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
573 | */ | |
574 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
575 | { | |
576 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
577 | return; | |
578 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
579 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
580 | } | |
581 | ||
128ea8ab | 582 | /* |
583 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 584 | */ |
d62a17ae | 585 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 586 | const struct prefix_evpn *p, |
d62a17ae | 587 | struct in_addr remote_vtep_ip, int add, |
f07e1c99 | 588 | uint8_t flags, uint32_t seq) |
d62a17ae | 589 | { |
590 | struct stream *s; | |
591 | int ipa_len; | |
592 | char buf1[ETHER_ADDR_STRLEN]; | |
593 | char buf2[INET6_ADDRSTRLEN]; | |
594 | char buf3[INET6_ADDRSTRLEN]; | |
595 | ||
596 | /* Check socket. */ | |
597 | if (!zclient || zclient->sock < 0) | |
598 | return 0; | |
599 | ||
600 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
601 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
602 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
603 | zlog_debug( |
604 | "%s: No zebra instance to talk to, not installing remote macip", | |
605 | __func__); | |
d62a17ae | 606 | return 0; |
bb4ef1ae | 607 | } |
d62a17ae | 608 | s = zclient->obuf; |
609 | stream_reset(s); | |
610 | ||
996c9314 LB |
611 | zclient_create_header( |
612 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
613 | bgp->vrf_id); | |
d62a17ae | 614 | stream_putl(s, vpn->vni); |
3714a385 | 615 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 616 | /* IP address length and IP address, if any. */ |
3714a385 | 617 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 618 | stream_putl(s, 0); |
619 | else { | |
3714a385 | 620 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 621 | : IPV6_MAX_BYTELEN; |
622 | stream_putl(s, ipa_len); | |
3714a385 | 623 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 624 | } |
625 | stream_put_in_addr(s, &remote_vtep_ip); | |
626 | ||
ead40654 | 627 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 628 | /* Also TX the sequence number of the best route. */ |
629 | if (add) { | |
ead40654 | 630 | stream_putc(s, flags); |
f07e1c99 | 631 | stream_putl(s, seq); |
632 | } | |
d62a17ae | 633 | |
634 | stream_putw_at(s, 0, stream_get_endp(s)); | |
635 | ||
636 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 637 | zlog_debug( |
f07e1c99 | 638 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 639 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 640 | prefix_mac2str(&p->prefix.macip_addr.mac, |
641 | buf1, sizeof(buf1)), | |
642 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 643 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
644 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
645 | sizeof(buf2))); | |
d62a17ae | 646 | |
647 | return zclient_send_message(zclient); | |
7ef5a232 | 648 | } |
b18825eb | 649 | |
128ea8ab | 650 | /* |
651 | * Add (update) or delete remote VTEP from zebra. | |
652 | */ | |
d62a17ae | 653 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
654 | const struct prefix_evpn *p, |
655 | int flood_control, int add) | |
128ea8ab | 656 | { |
d62a17ae | 657 | struct stream *s; |
128ea8ab | 658 | |
d62a17ae | 659 | /* Check socket. */ |
660 | if (!zclient || zclient->sock < 0) | |
661 | return 0; | |
128ea8ab | 662 | |
d62a17ae | 663 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
664 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
665 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
666 | zlog_debug( |
667 | "%s: No zebra instance to talk to, not installing remote vtep", | |
668 | __func__); | |
d62a17ae | 669 | return 0; |
bb4ef1ae | 670 | } |
128ea8ab | 671 | |
d62a17ae | 672 | s = zclient->obuf; |
673 | stream_reset(s); | |
128ea8ab | 674 | |
996c9314 LB |
675 | zclient_create_header( |
676 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
677 | bgp->vrf_id); | |
d62a17ae | 678 | stream_putl(s, vpn->vni); |
3714a385 | 679 | if (is_evpn_prefix_ipaddr_v4(p)) |
680 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
681 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 682 | flog_err( |
e50f7cfd | 683 | EC_BGP_VTEP_INVALID, |
d62a17ae | 684 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
685 | add ? "ADD" : "DEL", vpn->vni); | |
686 | return -1; | |
687 | } | |
b16dd019 | 688 | stream_putl(s, flood_control); |
128ea8ab | 689 | |
d62a17ae | 690 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 691 | |
d62a17ae | 692 | if (bgp_debug_zebra(NULL)) |
693 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
694 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 695 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 696 | |
d62a17ae | 697 | return zclient_send_message(zclient); |
128ea8ab | 698 | } |
699 | ||
50f74cf1 | 700 | /* |
701 | * Build extended community for EVPN ES (type-4) route | |
702 | */ | |
703 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
704 | struct attr *attr) | |
705 | { | |
706 | struct ecommunity ecom_encap; | |
707 | struct ecommunity ecom_es_rt; | |
708 | struct ecommunity_val eval; | |
709 | struct ecommunity_val eval_es_rt; | |
710 | bgp_encap_types tnl_type; | |
711 | struct ethaddr mac; | |
712 | ||
713 | /* Encap */ | |
714 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
715 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
716 | encode_encap_extcomm(tnl_type, &eval); | |
717 | ecom_encap.size = 1; | |
718 | ecom_encap.val = (uint8_t *)eval.val; | |
719 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
720 | ||
721 | /* ES import RT */ | |
722 | memset(&mac, 0, sizeof(struct ethaddr)); | |
723 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
724 | es_get_system_mac(&es->esi, &mac); | |
725 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
726 | ecom_es_rt.size = 1; | |
727 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
728 | attr->ecommunity = | |
729 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
730 | ||
731 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
732 | } | |
733 | ||
342dd0c6 | 734 | /* |
735 | * Build extended communities for EVPN prefix route. | |
736 | */ | |
737 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
738 | struct attr *attr) | |
739 | { | |
740 | struct ecommunity ecom_encap; | |
342dd0c6 | 741 | struct ecommunity_val eval; |
742 | struct ecommunity_val eval_rmac; | |
743 | bgp_encap_types tnl_type; | |
744 | struct listnode *node, *nnode; | |
745 | struct ecommunity *ecom; | |
fab92da7 | 746 | struct ecommunity *old_ecom; |
342dd0c6 | 747 | struct list *vrf_export_rtl = NULL; |
748 | ||
749 | /* Encap */ | |
750 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
751 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
752 | encode_encap_extcomm(tnl_type, &eval); | |
753 | ecom_encap.size = 1; | |
d7c0a89a | 754 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 755 | |
756 | /* Add Encap */ | |
fab92da7 | 757 | if (attr->ecommunity) { |
758 | old_ecom = attr->ecommunity; | |
759 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
760 | if (!old_ecom->refcnt) | |
761 | ecommunity_free(&old_ecom); | |
762 | } else | |
763 | ecom = ecommunity_dup(&ecom_encap); | |
764 | attr->ecommunity = ecom; | |
342dd0c6 | 765 | |
766 | /* Add the export RTs for L3VNI/VRF */ | |
767 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
768 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
769 | attr->ecommunity = | |
770 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 771 | |
772 | /* add the router mac extended community */ | |
773 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 774 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 775 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 776 | } |
777 | ||
778 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
779 | } | |
780 | ||
128ea8ab | 781 | /* |
1ec31309 | 782 | * Build extended communities for EVPN route. |
783 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
784 | * and ENCAP extended communities are applicable for all routes. | |
785 | * The default gateway extended community and MAC mobility (sticky) extended | |
786 | * community are added as needed based on passed settings - only for type-2 | |
787 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
788 | * added, if present, based on passed settings - only for non-link-local | |
789 | * type-2 routes. | |
128ea8ab | 790 | */ |
7ec156a9 | 791 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 792 | int add_l3_ecomm) |
128ea8ab | 793 | { |
d62a17ae | 794 | struct ecommunity ecom_encap; |
795 | struct ecommunity ecom_sticky; | |
ead40654 | 796 | struct ecommunity ecom_default_gw; |
68e33151 | 797 | struct ecommunity ecom_na; |
d62a17ae | 798 | struct ecommunity_val eval; |
799 | struct ecommunity_val eval_sticky; | |
ead40654 | 800 | struct ecommunity_val eval_default_gw; |
bc59a672 | 801 | struct ecommunity_val eval_rmac; |
68e33151 CS |
802 | struct ecommunity_val eval_na; |
803 | ||
d62a17ae | 804 | bgp_encap_types tnl_type; |
805 | struct listnode *node, *nnode; | |
806 | struct ecommunity *ecom; | |
d7c0a89a | 807 | uint32_t seqnum; |
7a3e76f1 | 808 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 809 | |
d62a17ae | 810 | /* Encap */ |
811 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
812 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
813 | encode_encap_extcomm(tnl_type, &eval); | |
814 | ecom_encap.size = 1; | |
d7c0a89a | 815 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 816 | |
d62a17ae | 817 | /* Add Encap */ |
818 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 819 | |
7a3e76f1 | 820 | /* Add the export RTs for L2VNI */ |
d62a17ae | 821 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
822 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 823 | |
1ec31309 | 824 | /* Add the export RTs for L3VNI if told to - caller determines |
825 | * when this should be done. | |
523cafc4 | 826 | */ |
1ec31309 | 827 | if (add_l3_ecomm) { |
7ec156a9 MK |
828 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
829 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
830 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
831 | ecom)) | |
996c9314 LB |
832 | attr->ecommunity = ecommunity_merge( |
833 | attr->ecommunity, ecom); | |
7ec156a9 | 834 | } |
f1f8b53c | 835 | } |
7a3e76f1 | 836 | |
1ec31309 | 837 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 838 | if (attr->sticky) { |
839 | seqnum = 0; | |
840 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
841 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
842 | ecom_sticky.size = 1; | |
d7c0a89a | 843 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 844 | attr->ecommunity = |
845 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
846 | } | |
c85c03c7 | 847 | |
1ec31309 | 848 | /* Add RMAC, if told to. */ |
849 | if (add_l3_ecomm) { | |
bc59a672 | 850 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 851 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
852 | } |
853 | ||
1ec31309 | 854 | /* Add default gateway, if needed. */ |
ead40654 MK |
855 | if (attr->default_gw) { |
856 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
857 | encode_default_gw_extcomm(&eval_default_gw); | |
858 | ecom_default_gw.size = 1; | |
859 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
860 | attr->ecommunity = |
861 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
862 | } |
863 | ||
68e33151 CS |
864 | if (attr->router_flag) { |
865 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
866 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
867 | ecom_na.size = 1; | |
868 | ecom_na.val = (uint8_t *)eval_na.val; | |
869 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
870 | &ecom_na); | |
871 | } | |
872 | ||
d62a17ae | 873 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 874 | } |
875 | ||
876 | /* | |
877 | * Add MAC mobility extended community to attribute. | |
878 | */ | |
d7c0a89a | 879 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 880 | { |
881 | struct ecommunity ecom_tmp; | |
882 | struct ecommunity_val eval; | |
d7c0a89a | 883 | uint8_t *ecom_val_ptr; |
d62a17ae | 884 | int i; |
d7c0a89a | 885 | uint8_t *pnt; |
d62a17ae | 886 | int type = 0; |
887 | int sub_type = 0; | |
888 | ||
889 | /* Build MM */ | |
890 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
891 | ||
892 | /* Find current MM ecommunity */ | |
421bb26a | 893 | ecom_val_ptr = NULL; |
d62a17ae | 894 | |
895 | if (attr->ecommunity) { | |
896 | for (i = 0; i < attr->ecommunity->size; i++) { | |
897 | pnt = attr->ecommunity->val + (i * 8); | |
898 | type = *pnt++; | |
899 | sub_type = *pnt++; | |
900 | ||
901 | if (type == ECOMMUNITY_ENCODE_EVPN | |
902 | && sub_type | |
903 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 DA |
904 | ecom_val_ptr = |
905 | (attr->ecommunity->val + (i * 8)); | |
d62a17ae | 906 | break; |
907 | } | |
908 | } | |
909 | } | |
910 | ||
911 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
912 | if (ecom_val_ptr) { |
913 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 914 | } |
915 | /* Add MM to existing */ | |
916 | else { | |
917 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
918 | ecom_tmp.size = 1; | |
d7c0a89a | 919 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 920 | |
f9a78910 DS |
921 | if (attr->ecommunity) |
922 | attr->ecommunity = | |
923 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
924 | else | |
925 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 926 | } |
128ea8ab | 927 | } |
928 | ||
929 | /* Install EVPN route into zebra. */ | |
d62a17ae | 930 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
931 | const struct prefix_evpn *p, |
932 | struct bgp_path_info *pi) | |
128ea8ab | 933 | { |
d62a17ae | 934 | int ret; |
d594a14c | 935 | uint8_t flags; |
b16dd019 | 936 | int flood_control; |
128ea8ab | 937 | |
d594a14c AK |
938 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
939 | flags = 0; | |
940 | if (pi->attr->sticky) | |
941 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
942 | if (pi->attr->default_gw) | |
943 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
944 | if (is_evpn_prefix_ipaddr_v6(p) && | |
945 | pi->attr->router_flag) | |
946 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
947 | ret = bgp_zebra_send_remote_macip( | |
948 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
949 | mac_mobility_seqnum(pi->attr)); | |
950 | } else { | |
b16dd019 AK |
951 | switch (pi->attr->pmsi_tnl_type) { |
952 | case PMSI_TNLTYPE_INGR_REPL: | |
953 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
954 | break; | |
955 | ||
956 | case PMSI_TNLTYPE_PIM_SM: | |
957 | flood_control = VXLAN_FLOOD_PIM_SM; | |
958 | break; | |
959 | ||
960 | default: | |
961 | flood_control = VXLAN_FLOOD_DISABLED; | |
962 | break; | |
963 | } | |
964 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 965 | } |
128ea8ab | 966 | |
d62a17ae | 967 | return ret; |
128ea8ab | 968 | } |
969 | ||
970 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 971 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 972 | const struct prefix_evpn *p, |
d62a17ae | 973 | struct in_addr remote_vtep_ip) |
128ea8ab | 974 | { |
d62a17ae | 975 | int ret; |
128ea8ab | 976 | |
d62a17ae | 977 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
978 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 979 | 0, 0, 0); |
d62a17ae | 980 | else |
b16dd019 AK |
981 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
982 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 983 | |
d62a17ae | 984 | return ret; |
128ea8ab | 985 | } |
986 | ||
987 | /* | |
988 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
989 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
990 | * from peers. | |
991 | */ | |
d62a17ae | 992 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 993 | struct bgp_dest *dest, |
4b7e6066 | 994 | struct bgp_path_info *old_local) |
128ea8ab | 995 | { |
9bcb3eef | 996 | struct bgp_dest *global_dest; |
40381db7 | 997 | struct bgp_path_info *pi; |
d62a17ae | 998 | afi_t afi = AFI_L2VPN; |
999 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1000 | |
d62a17ae | 1001 | /* Locate route node in the global EVPN routing table. Note that |
1002 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1003 | * L3VPN routes. | |
1004 | */ | |
9bcb3eef DS |
1005 | global_dest = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, |
1006 | bgp_dest_get_prefix(dest), &vpn->prd); | |
1007 | if (global_dest) { | |
d62a17ae | 1008 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1009 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1010 | |
d62a17ae | 1011 | /* Schedule for processing - withdraws to peers happen from |
1012 | * this table. | |
1013 | */ | |
40381db7 | 1014 | if (pi) |
9bcb3eef DS |
1015 | bgp_process(bgp, global_dest, afi, safi); |
1016 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1017 | } |
128ea8ab | 1018 | |
d62a17ae | 1019 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1020 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1021 | } |
1022 | ||
50f74cf1 | 1023 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
1024 | { | |
1025 | struct in_addr *ip; | |
1026 | ||
1027 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 1028 | |
1029 | ip->s_addr = vtep.s_addr; | |
1030 | return ip; | |
1031 | } | |
1032 | ||
1033 | static void es_vtep_free(struct in_addr *ip) | |
1034 | { | |
1035 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
1036 | } | |
1037 | ||
1038 | /* check if VTEP is already part of the list */ | |
1039 | static int is_vtep_present_in_list(struct list *list, | |
1040 | struct in_addr vtep) | |
1041 | { | |
1042 | struct listnode *node = NULL; | |
1043 | struct in_addr *tmp; | |
1044 | ||
1045 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
1046 | if (tmp->s_addr == vtep.s_addr) | |
1047 | return 1; | |
1048 | } | |
1049 | return 0; | |
1050 | } | |
1051 | ||
2bb9eff4 DS |
1052 | /* |
1053 | * Best path for ES route was changed, | |
1054 | * update the list of VTEPs for this ES | |
1055 | */ | |
bd494ec5 DS |
1056 | static int evpn_es_install_vtep(struct bgp *bgp, struct evpnes *es, |
1057 | const struct prefix_evpn *p, | |
50f74cf1 | 1058 | struct in_addr rvtep) |
1059 | { | |
1060 | struct in_addr *vtep_ip; | |
1061 | ||
1062 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1063 | return 0; | |
1064 | ||
1065 | ||
1066 | vtep_ip = es_vtep_new(rvtep); | |
1067 | if (vtep_ip) | |
1068 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
2bb9eff4 DS |
1072 | /* |
1073 | * Best path for ES route was changed, | |
1074 | * update the list of VTEPs for this ES | |
1075 | */ | |
50f74cf1 | 1076 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1077 | struct evpnes *es, | |
1078 | struct prefix_evpn *p, | |
1079 | struct in_addr rvtep) | |
1080 | { | |
1081 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1082 | struct in_addr *tmp; | |
1083 | ||
1084 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1085 | if (tmp->s_addr == rvtep.s_addr) { | |
1086 | es_vtep_free(tmp); | |
1087 | node_to_del = node; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | if (node_to_del) | |
1092 | list_delete_node(es->vtep_list, node_to_del); | |
1093 | ||
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * Calculate the best path for a ES(type-4) route. | |
1099 | */ | |
9bcb3eef DS |
1100 | static int evpn_es_route_select_install(struct bgp *bgp, struct evpnes *es, |
1101 | struct bgp_dest *dest) | |
50f74cf1 | 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. */ | |
9bcb3eef DS |
1111 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
1112 | afi, safi); | |
50f74cf1 | 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 | |
9bcb3eef | 1123 | && !CHECK_FLAG(dest->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)) { |
9bcb3eef DS |
1126 | if (bgp_zebra_has_route_changed(old_select)) { |
1127 | ret = evpn_es_install_vtep( | |
1128 | bgp, es, | |
1129 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1130 | dest), | |
1131 | old_select->attr->nexthop); | |
50f74cf1 | 1132 | } |
1defdda8 | 1133 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1134 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1135 | bgp_zebra_clear_route_change_flags(dest); |
50f74cf1 | 1136 | return ret; |
1137 | } | |
1138 | ||
1139 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1140 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
50f74cf1 | 1141 | |
2bb9eff4 DS |
1142 | /* |
1143 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1144 | * into the zebra RIB. |
1145 | */ | |
1146 | if (old_select || new_select) | |
9bcb3eef | 1147 | bgp_bump_version(dest); |
50f74cf1 | 1148 | |
1149 | if (old_select) | |
9bcb3eef | 1150 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1151 | if (new_select) { |
9bcb3eef DS |
1152 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1153 | bgp_path_info_unset_flag(dest, new_select, | |
1154 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1155 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1156 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
50f74cf1 | 1157 | } |
1158 | ||
1159 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1160 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
9bcb3eef DS |
1161 | ret = evpn_es_install_vtep( |
1162 | bgp, es, | |
1163 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1164 | new_select->attr->nexthop); | |
50f74cf1 | 1165 | } else { |
1166 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1167 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 | 1168 | ret = evpn_es_uninstall_vtep( |
9bcb3eef DS |
1169 | bgp, es, |
1170 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
2bb9eff4 | 1171 | old_select->attr->nexthop); |
50f74cf1 | 1172 | } |
1173 | ||
1174 | /* Clear any route change flags. */ | |
9bcb3eef | 1175 | bgp_zebra_clear_route_change_flags(dest); |
50f74cf1 | 1176 | |
18ee8310 | 1177 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1178 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1179 | bgp_path_info_reap(dest, old_select); |
50f74cf1 | 1180 | |
1181 | return ret; | |
1182 | } | |
1183 | ||
128ea8ab | 1184 | /* |
1185 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1186 | * if appropriate. | |
1187 | */ | |
d62a17ae | 1188 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1189 | struct bgp_dest *dest) |
d62a17ae | 1190 | { |
4b7e6066 DS |
1191 | struct bgp_path_info *old_select, *new_select; |
1192 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1193 | afi_t afi = AFI_L2VPN; |
1194 | safi_t safi = SAFI_EVPN; | |
1195 | int ret = 0; | |
1196 | ||
1197 | /* Compute the best path. */ | |
9bcb3eef | 1198 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1199 | afi, safi); |
1200 | old_select = old_and_new.old; | |
1201 | new_select = old_and_new.new; | |
1202 | ||
1203 | /* If the best path hasn't changed - see if there is still something to | |
1204 | * update | |
1205 | * to zebra RIB. | |
1206 | */ | |
1207 | if (old_select && old_select == new_select | |
1208 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1209 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
9bcb3eef | 1210 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1211 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1212 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1213 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1214 | ret = evpn_zebra_install( |
9bcb3eef DS |
1215 | bgp, vpn, |
1216 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1217 | dest), | |
d594a14c | 1218 | old_select); |
1defdda8 | 1219 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1220 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1221 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1222 | return ret; |
1223 | } | |
1224 | ||
1225 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1226 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1227 | |
1228 | /* bestpath has changed; update relevant fields and install or uninstall | |
1229 | * into the zebra RIB. | |
1230 | */ | |
1231 | if (old_select || new_select) | |
9bcb3eef | 1232 | bgp_bump_version(dest); |
d62a17ae | 1233 | |
1234 | if (old_select) | |
9bcb3eef | 1235 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1236 | if (new_select) { |
9bcb3eef DS |
1237 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1238 | bgp_path_info_unset_flag(dest, new_select, | |
1239 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1240 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1241 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1242 | } |
1243 | ||
1244 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1245 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
b54892e0 | 1246 | ret = evpn_zebra_install( |
9bcb3eef DS |
1247 | bgp, vpn, |
1248 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1249 | new_select); |
d594a14c | 1250 | |
d62a17ae | 1251 | /* If an old best existed and it was a "local" route, the only |
1252 | * reason | |
1253 | * it would be supplanted is due to MAC mobility procedures. So, | |
1254 | * we | |
1255 | * need to do an implicit delete and withdraw that route from | |
1256 | * peers. | |
1257 | */ | |
1258 | if (old_select && old_select->peer == bgp->peer_self | |
1259 | && old_select->type == ZEBRA_ROUTE_BGP | |
1260 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
9bcb3eef | 1261 | evpn_delete_old_local_route(bgp, vpn, dest, old_select); |
d62a17ae | 1262 | } else { |
1263 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1264 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1265 | ret = evpn_zebra_uninstall( |
1266 | bgp, vpn, | |
9bcb3eef DS |
1267 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1268 | dest), | |
b54892e0 | 1269 | old_select->attr->nexthop); |
d62a17ae | 1270 | } |
1271 | ||
1272 | /* Clear any route change flags. */ | |
9bcb3eef | 1273 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1274 | |
18ee8310 | 1275 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1276 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1277 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1278 | |
1279 | return ret; | |
128ea8ab | 1280 | } |
1281 | ||
ead40654 MK |
1282 | /* |
1283 | * Return true if the local ri for this rn is of type gateway mac | |
1284 | */ | |
9bcb3eef | 1285 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_dest *dest) |
ead40654 | 1286 | { |
40381db7 DS |
1287 | struct bgp_path_info *tmp_pi = NULL; |
1288 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1289 | |
40381db7 | 1290 | local_pi = NULL; |
9bcb3eef | 1291 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1292 | tmp_pi = tmp_pi->next) { |
40381db7 DS |
1293 | if (tmp_pi->peer == bgp->peer_self |
1294 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1295 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1296 | local_pi = tmp_pi; | |
ead40654 MK |
1297 | } |
1298 | ||
40381db7 | 1299 | if (!local_pi) |
ead40654 MK |
1300 | return 0; |
1301 | ||
40381db7 | 1302 | return local_pi->attr->default_gw; |
ead40654 MK |
1303 | } |
1304 | ||
c85c03c7 | 1305 | |
1306 | /* | |
1307 | * Return true if the local ri for this rn has sticky set | |
1308 | */ | |
9bcb3eef | 1309 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_dest *dest) |
c85c03c7 | 1310 | { |
40381db7 DS |
1311 | struct bgp_path_info *tmp_pi; |
1312 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1313 | |
40381db7 | 1314 | local_pi = NULL; |
9bcb3eef | 1315 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1316 | tmp_pi = tmp_pi->next) { |
40381db7 DS |
1317 | if (tmp_pi->peer == bgp->peer_self |
1318 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1319 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1320 | local_pi = tmp_pi; | |
d62a17ae | 1321 | } |
c85c03c7 | 1322 | |
40381db7 | 1323 | if (!local_pi) |
d62a17ae | 1324 | return 0; |
c85c03c7 | 1325 | |
40381db7 | 1326 | return local_pi->attr->sticky; |
c85c03c7 | 1327 | } |
1328 | ||
50f74cf1 | 1329 | /* |
1330 | * create or update EVPN type4 route entry. | |
1331 | * This could be in the ES table or the global table. | |
1332 | * TODO: handle remote ES (type4) routes as well | |
1333 | */ | |
4b7e6066 | 1334 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1335 | afi_t afi, safi_t safi, |
9bcb3eef DS |
1336 | struct bgp_dest *dest, |
1337 | struct attr *attr, int add, | |
1338 | struct bgp_path_info **ri, | |
50f74cf1 | 1339 | int *route_changed) |
1340 | { | |
1341 | char buf[ESI_STR_LEN]; | |
1342 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1343 | struct bgp_path_info *tmp_pi = NULL; |
1344 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1345 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1346 | struct attr *attr_new = NULL; |
b54892e0 | 1347 | const struct prefix_evpn *evp = NULL; |
50f74cf1 | 1348 | |
1349 | *ri = NULL; | |
1350 | *route_changed = 1; | |
9bcb3eef | 1351 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
50f74cf1 | 1352 | |
1353 | /* locate the local and remote entries if any */ | |
9bcb3eef | 1354 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1355 | tmp_pi = tmp_pi->next) { |
40381db7 DS |
1356 | if (tmp_pi->peer == bgp->peer_self |
1357 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1358 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1359 | local_pi = tmp_pi; | |
1360 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1361 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1362 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1363 | remote_pi = tmp_pi; | |
50f74cf1 | 1364 | } |
1365 | ||
6f94b685 | 1366 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1367 | * An ES route has esi + vtep_ip as the key, |
1368 | * We shouldn't see the same route from any other vtep. | |
1369 | */ | |
40381db7 | 1370 | if (remote_pi) { |
af4c2728 | 1371 | flog_err( |
e50f7cfd | 1372 | EC_BGP_ES_INVALID, |
14454c9f DS |
1373 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1374 | bgp->vrf_id, | |
1375 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1376 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1377 | return -1; |
1378 | } | |
1379 | ||
40381db7 | 1380 | if (!local_pi && !add) |
50f74cf1 | 1381 | return 0; |
1382 | ||
1383 | /* create or update the entry */ | |
40381db7 | 1384 | if (!local_pi) { |
50f74cf1 | 1385 | |
1386 | /* Add or update attribute to hash */ | |
1387 | attr_new = bgp_attr_intern(attr); | |
1388 | ||
1389 | /* Create new route with its attribute. */ | |
40381db7 | 1390 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1391 | bgp->peer_self, attr_new, dest); |
40381db7 | 1392 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
50f74cf1 | 1393 | |
1394 | /* add the newly created path to the route-node */ | |
9bcb3eef | 1395 | bgp_path_info_add(dest, tmp_pi); |
50f74cf1 | 1396 | } else { |
40381db7 DS |
1397 | tmp_pi = local_pi; |
1398 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1399 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1400 | *route_changed = 0; |
1401 | else { | |
1402 | /* The attribute has changed. | |
1403 | * Add (or update) attribute to hash. */ | |
1404 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1405 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1406 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1407 | |
1408 | /* Restore route, if needed. */ | |
40381db7 | 1409 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1410 | bgp_path_info_restore(dest, tmp_pi); |
50f74cf1 | 1411 | |
1412 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1413 | bgp_attr_unintern(&tmp_pi->attr); |
1414 | tmp_pi->attr = attr_new; | |
1415 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1416 | } |
1417 | } | |
1418 | ||
1419 | /* Return back the route entry. */ | |
40381db7 | 1420 | *ri = tmp_pi; |
50f74cf1 | 1421 | return 0; |
1422 | } | |
1423 | ||
1424 | /* update evpn es (type-4) route */ | |
1425 | static int update_evpn_type4_route(struct bgp *bgp, | |
1426 | struct evpnes *es, | |
1427 | struct prefix_evpn *p) | |
1428 | { | |
1429 | int ret = 0; | |
1430 | int route_changed = 0; | |
1431 | char buf[ESI_STR_LEN]; | |
1432 | char buf1[INET6_ADDRSTRLEN]; | |
1433 | afi_t afi = AFI_L2VPN; | |
1434 | safi_t safi = SAFI_EVPN; | |
1435 | struct attr attr; | |
1436 | struct attr *attr_new = NULL; | |
9bcb3eef | 1437 | struct bgp_dest *dest = NULL; |
40381db7 | 1438 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1439 | |
1440 | memset(&attr, 0, sizeof(struct attr)); | |
1441 | ||
1442 | /* Build path-attribute for this route. */ | |
1443 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1444 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1445 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1446 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1447 | ||
1448 | /* Set up extended community. */ | |
1449 | build_evpn_type4_route_extcomm(es, &attr); | |
1450 | ||
1451 | /* First, create (or fetch) route node within the ESI. */ | |
1452 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1453 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
50f74cf1 | 1454 | |
1455 | /* Create or update route entry. */ | |
9bcb3eef | 1456 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, dest, &attr, 1, |
40381db7 | 1457 | &pi, &route_changed); |
50f74cf1 | 1458 | if (ret != 0) { |
1c50c1c0 QY |
1459 | flog_err(EC_BGP_ES_INVALID, |
1460 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1461 | bgp->vrf_id, | |
1462 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1463 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1464 | } |
1465 | ||
40381db7 DS |
1466 | assert(pi); |
1467 | attr_new = pi->attr; | |
50f74cf1 | 1468 | |
1469 | /* Perform route selection; | |
1470 | * this is just to set the flags correctly | |
1471 | * as local route in the ES always wins. | |
1472 | */ | |
9bcb3eef DS |
1473 | evpn_es_route_select_install(bgp, es, dest); |
1474 | bgp_dest_unlock_node(dest); | |
50f74cf1 | 1475 | |
1476 | /* If this is a new route or some attribute has changed, export the | |
1477 | * route to the global table. The route will be advertised to peers | |
1478 | * from there. Note that this table is a 2-level tree (RD-level + | |
1479 | * Prefix-level) similar to L3VPN routes. | |
1480 | */ | |
1481 | if (route_changed) { | |
40381db7 | 1482 | struct bgp_path_info *global_pi; |
50f74cf1 | 1483 | |
9bcb3eef DS |
1484 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1485 | (struct prefix *)p, &es->prd); | |
1486 | update_evpn_type4_route_entry(bgp, es, afi, safi, dest, | |
1487 | attr_new, 1, &global_pi, | |
1488 | &route_changed); | |
50f74cf1 | 1489 | |
1490 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
1491 | bgp_process(bgp, dest, afi, safi); |
1492 | bgp_dest_unlock_node(dest); | |
50f74cf1 | 1493 | } |
1494 | ||
1495 | /* Unintern temporary. */ | |
1496 | aspath_unintern(&attr.aspath); | |
1497 | return 0; | |
1498 | } | |
1499 | ||
5e53dce3 | 1500 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1501 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1502 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1503 | struct attr *attr, int *route_changed) |
342dd0c6 | 1504 | { |
1505 | struct attr *attr_new = NULL; | |
40381db7 | 1506 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1507 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1508 | struct bgp_path_info *local_pi = NULL; |
1509 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1510 | |
5424b7ba | 1511 | *route_changed = 0; |
342dd0c6 | 1512 | /* locate the local route entry if any */ |
9bcb3eef | 1513 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1514 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1515 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1516 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1517 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1518 | local_pi = tmp_pi; | |
342dd0c6 | 1519 | } |
1520 | ||
2bb9eff4 | 1521 | /* |
0437e105 | 1522 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1523 | * Otherwise see if route attr has changed |
523cafc4 | 1524 | */ |
40381db7 | 1525 | if (!local_pi) { |
342dd0c6 | 1526 | |
5424b7ba MK |
1527 | /* route has changed as this is the first entry */ |
1528 | *route_changed = 1; | |
1529 | ||
342dd0c6 | 1530 | /* Add (or update) attribute to hash. */ |
1531 | attr_new = bgp_attr_intern(attr); | |
1532 | ||
1533 | /* create the route info from attribute */ | |
40381db7 | 1534 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1535 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1536 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1537 | |
b57ba6d2 | 1538 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1539 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1540 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1541 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1542 | pi->extra->num_labels = 1; | |
342dd0c6 | 1543 | |
1544 | /* add the route entry to route node*/ | |
9bcb3eef | 1545 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1546 | } else { |
1547 | ||
40381db7 DS |
1548 | tmp_pi = local_pi; |
1549 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1550 | |
1551 | /* attribute changed */ | |
1552 | *route_changed = 1; | |
1553 | ||
342dd0c6 | 1554 | /* The attribute has changed. */ |
1555 | /* Add (or update) attribute to hash. */ | |
1556 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1557 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1558 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1559 | |
1560 | /* Restore route, if needed. */ | |
40381db7 | 1561 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1562 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1563 | |
1564 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1565 | bgp_attr_unintern(&tmp_pi->attr); |
1566 | tmp_pi->attr = attr_new; | |
1567 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1568 | } |
1569 | } | |
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1574 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1575 | struct attr *src_attr) | |
342dd0c6 | 1576 | { |
1577 | afi_t afi = AFI_L2VPN; | |
1578 | safi_t safi = SAFI_EVPN; | |
1579 | struct attr attr; | |
9bcb3eef | 1580 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1581 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1582 | int route_changed = 0; |
342dd0c6 | 1583 | |
5e53dce3 T |
1584 | bgp_evpn = bgp_get_evpn(); |
1585 | if (!bgp_evpn) | |
faafdfa8 | 1586 | return 0; |
342dd0c6 | 1587 | |
2f69f6d3 | 1588 | /* Build path attribute for this route - use the source attr, if |
1589 | * present, else treat as locally originated. | |
1590 | */ | |
1591 | if (src_attr) | |
6f4f49b2 | 1592 | attr = *src_attr; |
2f69f6d3 | 1593 | else { |
1594 | memset(&attr, 0, sizeof(struct attr)); | |
1595 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1596 | } | |
5394a276 | 1597 | |
5394a276 CS |
1598 | /* Advertise Primary IP (PIP) is enabled, send individual |
1599 | * IP (default instance router-id) as nexthop. | |
1600 | * PIP is disabled or vrr interface is not present | |
27727001 | 1601 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1602 | */ |
1603 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1604 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1605 | attr.nexthop = bgp_vrf->originator_ip; | |
1606 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1607 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1608 | } else { |
27727001 CS |
1609 | /* copy sys rmac */ |
1610 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1611 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1612 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1613 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1614 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1615 | if (bgp_debug_zebra(NULL)) { | |
1616 | char buf1[PREFIX_STRLEN]; | |
1617 | ||
1618 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1619 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1620 | prefix2str(evp, buf1, sizeof(buf1))); | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | if (bgp_debug_zebra(NULL)) { | |
1625 | char buf[ETHER_ADDR_STRLEN]; | |
1626 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1627 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1628 | |
1629 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1630 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1631 | prefix2str(evp, buf1, sizeof(buf1)), | |
1632 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1633 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1634 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1635 | } |
1636 | ||
342dd0c6 | 1637 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1638 | |
1639 | /* Setup RT and encap extended community */ | |
1640 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1641 | ||
1642 | /* get the route node in global table */ | |
9bcb3eef DS |
1643 | dest = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1644 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1645 | assert(dest); | |
342dd0c6 | 1646 | |
1647 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1648 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1649 | &route_changed); |
342dd0c6 | 1650 | |
1651 | /* schedule for processing and unlock node */ | |
5424b7ba | 1652 | if (route_changed) { |
9bcb3eef DS |
1653 | bgp_process(bgp_evpn, dest, afi, safi); |
1654 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1655 | } |
342dd0c6 | 1656 | |
1657 | /* uninten temporary */ | |
5ee65f6f | 1658 | if (!src_attr) |
1659 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1660 | return 0; |
1661 | } | |
1662 | ||
128ea8ab | 1663 | /* |
1664 | * Create or update EVPN route entry. This could be in the VNI route table | |
1665 | * or the global route table. | |
1666 | */ | |
d62a17ae | 1667 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef DS |
1668 | afi_t afi, safi_t safi, |
1669 | struct bgp_dest *dest, struct attr *attr, | |
1670 | int add, struct bgp_path_info **pi, | |
1671 | uint8_t flags, uint32_t seq) | |
d62a17ae | 1672 | { |
40381db7 DS |
1673 | struct bgp_path_info *tmp_pi; |
1674 | struct bgp_path_info *local_pi; | |
d62a17ae | 1675 | struct attr *attr_new; |
b57ba6d2 | 1676 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1677 | uint32_t num_labels = 1; |
d62a17ae | 1678 | int route_change = 1; |
d7c0a89a | 1679 | uint8_t sticky = 0; |
b54892e0 | 1680 | const struct prefix_evpn *evp; |
d62a17ae | 1681 | |
40381db7 | 1682 | *pi = NULL; |
9bcb3eef | 1683 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1684 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1685 | |
f07e1c99 | 1686 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1687 | local_pi = NULL; |
9bcb3eef | 1688 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1689 | tmp_pi = tmp_pi->next) { |
40381db7 DS |
1690 | if (tmp_pi->peer == bgp->peer_self |
1691 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1692 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1693 | local_pi = tmp_pi; | |
d62a17ae | 1694 | } |
1695 | ||
1696 | /* If route doesn't exist already, create a new one, if told to. | |
1697 | * Otherwise act based on whether the attributes of the route have | |
1698 | * changed or not. | |
1699 | */ | |
40381db7 | 1700 | if (!local_pi && !add) |
d62a17ae | 1701 | return 0; |
1702 | ||
f07e1c99 | 1703 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1704 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1705 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1706 | |
40381db7 | 1707 | if (!local_pi) { |
d62a17ae | 1708 | /* Add (or update) attribute to hash. */ |
1709 | attr_new = bgp_attr_intern(attr); | |
1710 | ||
1711 | /* Extract MAC mobility sequence number, if any. */ | |
1712 | attr_new->mm_seqnum = | |
1713 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1714 | attr_new->sticky = sticky; | |
1715 | ||
1716 | /* Create new route with its attribute. */ | |
40381db7 | 1717 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1718 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1719 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1720 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1721 | |
1722 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1723 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1724 | |
1725 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1726 | * Only attach second label if we are advertising two labels for | |
1727 | * type-2 routes. | |
1728 | */ | |
996c9314 LB |
1729 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1730 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1731 | vni_t l3vni; |
1732 | ||
1733 | l3vni = bgpevpn_get_l3vni(vpn); | |
1734 | if (l3vni) { | |
1735 | vni2label(l3vni, &label[1]); | |
1736 | num_labels++; | |
1737 | } | |
1738 | } | |
d62a17ae | 1739 | |
40381db7 DS |
1740 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1741 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1742 | /* Mark route as self type-2 route */ |
1743 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1744 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1745 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1746 | } else { |
40381db7 DS |
1747 | tmp_pi = local_pi; |
1748 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1749 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1750 | route_change = 0; |
1751 | else { | |
c48d9f5f MK |
1752 | /* |
1753 | * The attributes have changed, type-2 routes needs to | |
1754 | * be advertised with right labels. | |
1755 | */ | |
1756 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1757 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1758 | && CHECK_FLAG(vpn->flags, | |
1759 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1760 | vni_t l3vni; |
1761 | ||
1762 | l3vni = bgpevpn_get_l3vni(vpn); | |
1763 | if (l3vni) { | |
1764 | vni2label(l3vni, &label[1]); | |
1765 | num_labels++; | |
1766 | } | |
1767 | } | |
40381db7 DS |
1768 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1769 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1770 | |
d62a17ae | 1771 | /* The attribute has changed. */ |
1772 | /* Add (or update) attribute to hash. */ | |
1773 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1774 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1775 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1776 | |
f07e1c99 | 1777 | /* Extract MAC mobility sequence number, if any. */ |
1778 | attr_new->mm_seqnum = | |
1779 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1780 | attr_new->sticky = sticky; | |
1781 | ||
d62a17ae | 1782 | /* Restore route, if needed. */ |
40381db7 | 1783 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1784 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1785 | |
1786 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1787 | bgp_attr_unintern(&tmp_pi->attr); |
1788 | tmp_pi->attr = attr_new; | |
1789 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1790 | } |
1791 | } | |
1792 | ||
1793 | /* Return back the route entry. */ | |
40381db7 | 1794 | *pi = tmp_pi; |
d62a17ae | 1795 | return route_change; |
128ea8ab | 1796 | } |
1797 | ||
ec0ab544 | 1798 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1799 | struct bgpevpn *vpn, |
1800 | struct bgp_dest *dest) | |
ec0ab544 AK |
1801 | { |
1802 | struct bgp_path_info *tmp_ri; | |
1803 | struct bgp_path_info *curr_select = NULL; | |
1804 | ||
9bcb3eef DS |
1805 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1806 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1807 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1808 | curr_select = tmp_ri; | |
1809 | break; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1814 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
9bcb3eef DS |
1815 | evpn_zebra_install( |
1816 | bgp, vpn, | |
1817 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1818 | curr_select); | |
ec0ab544 AK |
1819 | } |
1820 | ||
6d8c603a AK |
1821 | /* |
1822 | * If the local route was not selected evict it and tell zebra to re-add | |
1823 | * the best remote dest. | |
1824 | * | |
1825 | * Typically a local path added by zebra is expected to be selected as | |
1826 | * best. In which case when a remote path wins as best (later) | |
1827 | * evpn_route_select_install itself evicts the older-local-best path. | |
1828 | * | |
1829 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1830 | * is possible that the local path is no longer the "older" best path. | |
1831 | * It is a path that was never designated as best and hence requires | |
1832 | * additional handling to prevent bgp from injecting and holding on to a | |
1833 | * non-best local path. | |
1834 | */ | |
1835 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1836 | struct bgpevpn *vpn, | |
9bcb3eef | 1837 | struct bgp_dest *dest, |
9a8897aa | 1838 | struct bgp_path_info *local_pi) |
6d8c603a | 1839 | { |
6d8c603a | 1840 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1841 | if (bgp_debug_zebra(NULL)) |
9bcb3eef DS |
1842 | zlog_debug("evicting local evpn prefix %pRN as remote won", |
1843 | dest); | |
b54892e0 | 1844 | |
9bcb3eef DS |
1845 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi); |
1846 | bgp_path_info_reap(dest, local_pi); | |
6d8c603a AK |
1847 | |
1848 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1849 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1850 | } |
1851 | ||
128ea8ab | 1852 | /* |
1853 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1854 | * and schedule for processing. | |
1855 | */ | |
d62a17ae | 1856 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1857 | struct prefix_evpn *p, uint8_t flags, |
1858 | uint32_t seq) | |
128ea8ab | 1859 | { |
9bcb3eef | 1860 | struct bgp_dest *dest; |
d62a17ae | 1861 | struct attr attr; |
1862 | struct attr *attr_new; | |
1ec31309 | 1863 | int add_l3_ecomm = 0; |
40381db7 | 1864 | struct bgp_path_info *pi; |
d62a17ae | 1865 | afi_t afi = AFI_L2VPN; |
1866 | safi_t safi = SAFI_EVPN; | |
1867 | int route_change; | |
128ea8ab | 1868 | |
d62a17ae | 1869 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1870 | |
d62a17ae | 1871 | /* Build path-attribute for this route. */ |
1872 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1873 | attr.nexthop = vpn->originator_ip; | |
1874 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1875 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1876 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1877 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1878 | attr.router_flag = CHECK_FLAG(flags, |
1879 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1880 | |
1881 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1882 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1883 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1884 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1885 | } | |
be41eb68 | 1886 | |
1ec31309 | 1887 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1888 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1889 | uint8_t af_flags = 0; | |
1890 | ||
1891 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1892 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1893 | ||
1894 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
1895 | ||
1896 | if (bgp_debug_zebra(NULL)) { | |
1897 | char buf[ETHER_ADDR_STRLEN]; | |
1898 | char buf1[PREFIX_STRLEN]; | |
1899 | ||
1900 | zlog_debug("VRF %s vni %u type-2 route evp %s RMAC %s nexthop %s", | |
1901 | vpn->bgp_vrf ? | |
1902 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1903 | vpn->vni, | |
1904 | prefix2str(p, buf1, sizeof(buf1)), | |
1905 | prefix_mac2str(&attr.rmac, buf, | |
1906 | sizeof(buf)), | |
1907 | inet_ntoa(attr.mp_nexthop_global_in)); | |
1908 | } | |
1909 | } | |
1910 | ||
a21bd7a3 | 1911 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1912 | |
1ec31309 | 1913 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1914 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1915 | * these routes. | |
1916 | */ | |
1917 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1918 | (is_evpn_prefix_ipaddr_v4(p) || |
1919 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1920 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1921 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1922 | add_l3_ecomm = 1; |
1923 | ||
1924 | /* Set up extended community. */ | |
1925 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1926 | |
d62a17ae | 1927 | /* First, create (or fetch) route node within the VNI. */ |
1928 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1929 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1930 | |
d62a17ae | 1931 | /* Create or update route entry. */ |
9bcb3eef | 1932 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
40381db7 DS |
1933 | 1, &pi, flags, seq); |
1934 | assert(pi); | |
1935 | attr_new = pi->attr; | |
128ea8ab | 1936 | |
6d8c603a AK |
1937 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1938 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1939 | |
1940 | /* Perform route selection. Normally, the local route in the | |
1941 | * VNI is expected to win and be the best route. However, if | |
1942 | * there is a race condition where a host moved from local to | |
1943 | * remote and the remote route was received in BGP just prior | |
1944 | * to the local MACIP notification from zebra, the remote | |
1945 | * route would win, and we should evict the defunct local route | |
1946 | * and (re)install the remote route into zebra. | |
1947 | */ | |
9bcb3eef | 1948 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1949 | /* |
9a8897aa AK |
1950 | * If the new local route was not selected evict it and tell zebra |
1951 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1952 | * routes. | |
6d8c603a | 1953 | */ |
9a8897aa AK |
1954 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1955 | route_change = 0; | |
9bcb3eef | 1956 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9a8897aa | 1957 | } |
6d8c603a AK |
1958 | bgp_path_info_unlock(pi); |
1959 | ||
9bcb3eef | 1960 | bgp_dest_unlock_node(dest); |
128ea8ab | 1961 | |
d62a17ae | 1962 | /* If this is a new route or some attribute has changed, export the |
1963 | * route to the global table. The route will be advertised to peers | |
1964 | * from there. Note that this table is a 2-level tree (RD-level + | |
1965 | * Prefix-level) similar to L3VPN routes. | |
1966 | */ | |
1967 | if (route_change) { | |
40381db7 | 1968 | struct bgp_path_info *global_pi; |
128ea8ab | 1969 | |
9bcb3eef DS |
1970 | dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1971 | (struct prefix *)p, &vpn->prd); | |
1972 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, | |
40381db7 | 1973 | &global_pi, flags, seq); |
128ea8ab | 1974 | |
d62a17ae | 1975 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1976 | bgp_process(bgp, dest, afi, safi); |
1977 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1978 | } |
128ea8ab | 1979 | |
d62a17ae | 1980 | /* Unintern temporary. */ |
1981 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1982 | |
d62a17ae | 1983 | return 0; |
128ea8ab | 1984 | } |
1985 | ||
50f74cf1 | 1986 | /* |
1987 | * Delete EVPN route entry. | |
1988 | * The entry can be in ESI/VNI table or the global table. | |
1989 | */ | |
4b7e6066 | 1990 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1991 | struct bgp_dest *dest, |
40381db7 | 1992 | struct bgp_path_info **pi) |
342dd0c6 | 1993 | { |
40381db7 | 1994 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1995 | |
40381db7 | 1996 | *pi = NULL; |
342dd0c6 | 1997 | |
50f74cf1 | 1998 | /* Now, find matching route. */ |
9bcb3eef | 1999 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 2000 | tmp_pi = tmp_pi->next) |
40381db7 DS |
2001 | if (tmp_pi->peer == bgp->peer_self |
2002 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2003 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 2004 | break; |
2005 | ||
40381db7 | 2006 | *pi = tmp_pi; |
342dd0c6 | 2007 | |
2008 | /* Mark route for delete. */ | |
40381db7 | 2009 | if (tmp_pi) |
9bcb3eef | 2010 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 2011 | } |
2012 | ||
50f74cf1 | 2013 | |
2014 | ||
2015 | /* Delete EVPN ES (type-4) route */ | |
2016 | static int delete_evpn_type4_route(struct bgp *bgp, | |
2017 | struct evpnes *es, | |
2018 | struct prefix_evpn *p) | |
2019 | { | |
2020 | afi_t afi = AFI_L2VPN; | |
2021 | safi_t safi = SAFI_EVPN; | |
40381db7 | 2022 | struct bgp_path_info *pi; |
9bcb3eef DS |
2023 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
2024 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
50f74cf1 | 2025 | |
2026 | /* First, locate the route node within the ESI. | |
2027 | * If it doesn't exist, ther is nothing to do. | |
2028 | * Note: there is no RD here. | |
2029 | */ | |
9bcb3eef DS |
2030 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
2031 | if (!dest) | |
50f74cf1 | 2032 | return 0; |
2033 | ||
2034 | /* Next, locate route node in the global EVPN routing table. | |
2035 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
2036 | */ | |
9bcb3eef DS |
2037 | global_dest = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, |
2038 | (struct prefix *)p, &es->prd); | |
2039 | if (global_dest) { | |
50f74cf1 | 2040 | |
2041 | /* Delete route entry in the global EVPN table. */ | |
9bcb3eef | 2042 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
50f74cf1 | 2043 | |
2044 | /* Schedule for processing - withdraws to peers happen from | |
2045 | * this table. | |
2046 | */ | |
40381db7 | 2047 | if (pi) |
9bcb3eef DS |
2048 | bgp_process(bgp, global_dest, afi, safi); |
2049 | bgp_dest_unlock_node(global_dest); | |
50f74cf1 | 2050 | } |
2051 | ||
2052 | /* | |
2053 | * Delete route entry in the ESI route table. | |
2054 | * This can just be removed. | |
2055 | */ | |
9bcb3eef | 2056 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2057 | if (pi) |
9bcb3eef DS |
2058 | bgp_path_info_reap(dest, pi); |
2059 | bgp_dest_unlock_node(dest); | |
50f74cf1 | 2060 | return 0; |
2061 | } | |
2062 | ||
342dd0c6 | 2063 | /* Delete EVPN type5 route */ |
996c9314 | 2064 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2065 | { |
2066 | afi_t afi = AFI_L2VPN; | |
2067 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 2068 | struct bgp_dest *dest = NULL; |
40381db7 | 2069 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2070 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2071 | |
5e53dce3 T |
2072 | bgp_evpn = bgp_get_evpn(); |
2073 | if (!bgp_evpn) | |
faafdfa8 | 2074 | return 0; |
342dd0c6 | 2075 | |
2076 | /* locate the global route entry for this type-5 prefix */ | |
9bcb3eef DS |
2077 | dest = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
2078 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
2079 | if (!dest) | |
342dd0c6 | 2080 | return 0; |
2081 | ||
9bcb3eef | 2082 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 2083 | if (pi) |
9bcb3eef DS |
2084 | bgp_process(bgp_evpn, dest, afi, safi); |
2085 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 2086 | return 0; |
2087 | } | |
2088 | ||
128ea8ab | 2089 | /* |
2090 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2091 | * schedule for processing. | |
2092 | */ | |
d62a17ae | 2093 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2094 | struct prefix_evpn *p) | |
2095 | { | |
9bcb3eef | 2096 | struct bgp_dest *dest, *global_dest; |
40381db7 | 2097 | struct bgp_path_info *pi; |
d62a17ae | 2098 | afi_t afi = AFI_L2VPN; |
2099 | safi_t safi = SAFI_EVPN; | |
2100 | ||
2101 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2102 | * there | |
2103 | * is nothing further to do. | |
2104 | */ | |
2105 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2106 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2107 | if (!dest) | |
d62a17ae | 2108 | return 0; |
2109 | ||
2110 | /* Next, locate route node in the global EVPN routing table. Note that | |
2111 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2112 | * L3VPN routes. | |
2113 | */ | |
9bcb3eef DS |
2114 | global_dest = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, |
2115 | (struct prefix *)p, &vpn->prd); | |
2116 | if (global_dest) { | |
d62a17ae | 2117 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 2118 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 2119 | |
2120 | /* Schedule for processing - withdraws to peers happen from | |
2121 | * this table. | |
2122 | */ | |
40381db7 | 2123 | if (pi) |
9bcb3eef DS |
2124 | bgp_process(bgp, global_dest, afi, safi); |
2125 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 2126 | } |
2127 | ||
2128 | /* Delete route entry in the VNI route table. This can just be removed. | |
2129 | */ | |
9bcb3eef | 2130 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 2131 | if (pi) { |
9bcb3eef DS |
2132 | bgp_path_info_reap(dest, pi); |
2133 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 2134 | } |
9bcb3eef | 2135 | bgp_dest_unlock_node(dest); |
d62a17ae | 2136 | |
2137 | return 0; | |
128ea8ab | 2138 | } |
2139 | ||
2140 | /* | |
2141 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2142 | * be scheduled for advertise to peers. | |
2143 | */ | |
d62a17ae | 2144 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2145 | { | |
2146 | afi_t afi; | |
2147 | safi_t safi; | |
9bcb3eef | 2148 | struct bgp_dest *dest; |
40381db7 | 2149 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2150 | struct attr attr; |
d62a17ae | 2151 | struct attr *attr_new; |
f07e1c99 | 2152 | uint32_t seq; |
1ec31309 | 2153 | int add_l3_ecomm = 0; |
d62a17ae | 2154 | |
2155 | afi = AFI_L2VPN; | |
2156 | safi = SAFI_EVPN; | |
d62a17ae | 2157 | |
2158 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2159 | * routes updated, update corresponding entry in the global table too. | |
2160 | */ | |
9bcb3eef DS |
2161 | for (dest = bgp_table_top(vpn->route_table); dest; |
2162 | dest = bgp_route_next(dest)) { | |
2163 | const struct prefix_evpn *evp = | |
2164 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2165 | struct bgp_dest *rd_dest; | |
40381db7 | 2166 | struct bgp_path_info *global_pi; |
d62a17ae | 2167 | |
2168 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2169 | continue; | |
2170 | ||
f07e1c99 | 2171 | /* Identify local route. */ |
9bcb3eef | 2172 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 2173 | tmp_pi = tmp_pi->next) { |
40381db7 DS |
2174 | if (tmp_pi->peer == bgp->peer_self |
2175 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2176 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2177 | break; |
7ec156a9 | 2178 | } |
d62a17ae | 2179 | |
40381db7 | 2180 | if (!tmp_pi) |
d62a17ae | 2181 | continue; |
2182 | ||
f07e1c99 | 2183 | /* |
2184 | * Build attribute per local route as the MAC mobility and | |
2185 | * some other values could differ for different routes. The | |
2186 | * attributes will be shared in the hash table. | |
2187 | */ | |
2188 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2189 | attr.nexthop = vpn->originator_ip; | |
2190 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2191 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
0ca10580 CS |
2192 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, |
2193 | tmp_pi->extra->af_flags); | |
f07e1c99 | 2194 | |
9bcb3eef | 2195 | if (evpn_route_is_sticky(bgp, dest)) |
f07e1c99 | 2196 | attr.sticky = 1; |
9bcb3eef | 2197 | else if (evpn_route_is_def_gw(bgp, dest)) { |
f07e1c99 | 2198 | attr.default_gw = 1; |
2199 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2200 | attr.router_flag = 1; | |
2201 | } | |
2202 | ||
0ca10580 CS |
2203 | if (bgp_debug_zebra(NULL)) { |
2204 | char buf[ETHER_ADDR_STRLEN]; | |
2205 | char buf1[PREFIX_STRLEN]; | |
2206 | ||
2207 | zlog_debug("VRF %s vni %u evp %s RMAC %s nexthop %s", | |
2208 | vpn->bgp_vrf ? | |
2209 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
2210 | vpn->vni, | |
2211 | prefix2str(evp, buf1, sizeof(buf1)), | |
2212 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
2213 | inet_ntoa(attr.mp_nexthop_global_in)); | |
2214 | } | |
2215 | ||
f07e1c99 | 2216 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if |
2217 | * using L3 VNI for type-2 routes also. | |
2218 | */ | |
2219 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2220 | !IN6_IS_ADDR_LINKLOCAL( |
2221 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2222 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2223 | bgpevpn_get_l3vni(vpn)) | |
2224 | add_l3_ecomm = 1; | |
2225 | ||
2226 | /* Set up extended community. */ | |
2227 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2228 | ||
40381db7 | 2229 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2230 | |
2231 | /* Update the route entry. */ | |
9bcb3eef DS |
2232 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, 0, |
2233 | &pi, 0, seq); | |
f07e1c99 | 2234 | |
7ab604ab CS |
2235 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2236 | bgp_path_info_lock(pi); | |
2237 | ||
2238 | /* Perform route selection. Normally, the local route in the | |
2239 | * VNI is expected to win and be the best route. However, | |
2240 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2241 | * that causes best selection to be based on next hop), a | |
2242 | * remote route could win. If the local route is the best, | |
2243 | * ensure it is updated in the global EVPN route table and | |
2244 | * advertised to peers; otherwise, ensure it is evicted and | |
2245 | * (re)install the remote route into zebra. | |
d62a17ae | 2246 | */ |
9bcb3eef | 2247 | evpn_route_select_install(bgp, vpn, dest); |
7ab604ab | 2248 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
9bcb3eef | 2249 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
7ab604ab CS |
2250 | /* unlock pi */ |
2251 | bgp_path_info_unlock(pi); | |
2252 | } else { | |
2253 | attr_new = pi->attr; | |
2254 | /* unlock pi */ | |
2255 | bgp_path_info_unlock(pi); | |
2256 | ||
2257 | /* Update route in global routing table. */ | |
9bcb3eef DS |
2258 | rd_dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, |
2259 | safi, (struct prefix *)evp, | |
2260 | &vpn->prd); | |
2261 | assert(rd_dest); | |
2262 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_dest, | |
7ab604ab CS |
2263 | attr_new, 0, &global_pi, 0, |
2264 | mac_mobility_seqnum(attr_new)); | |
2265 | ||
2266 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
2267 | bgp_process(bgp, rd_dest, afi, safi); |
2268 | bgp_dest_unlock_node(rd_dest); | |
7ab604ab | 2269 | } |
d62a17ae | 2270 | |
f07e1c99 | 2271 | /* Unintern temporary. */ |
2272 | aspath_unintern(&attr.aspath); | |
f07e1c99 | 2273 | } |
d62a17ae | 2274 | |
2275 | return 0; | |
128ea8ab | 2276 | } |
2277 | ||
2278 | /* | |
2279 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2280 | * global routing table. These are also scheduled for withdraw from peers. | |
2281 | */ | |
d62a17ae | 2282 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2283 | { |
d62a17ae | 2284 | afi_t afi; |
2285 | safi_t safi; | |
9bcb3eef | 2286 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2287 | struct bgp_table *table; |
40381db7 | 2288 | struct bgp_path_info *pi; |
128ea8ab | 2289 | |
d62a17ae | 2290 | afi = AFI_L2VPN; |
2291 | safi = SAFI_EVPN; | |
128ea8ab | 2292 | |
9bcb3eef DS |
2293 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2294 | (struct prefix *)&vpn->prd); | |
2295 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2296 | table = bgp_dest_get_bgp_table_info(rddest); | |
2297 | for (dest = bgp_table_top(table); dest; | |
2298 | dest = bgp_route_next(dest)) { | |
2299 | const struct prefix_evpn *evp = | |
2300 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2301 | dest); | |
128ea8ab | 2302 | |
d62a17ae | 2303 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2304 | continue; | |
128ea8ab | 2305 | |
9bcb3eef | 2306 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2307 | if (pi) |
9bcb3eef | 2308 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2309 | } |
2310 | } | |
128ea8ab | 2311 | |
d62a17ae | 2312 | /* Unlock RD node. */ |
9bcb3eef DS |
2313 | if (rddest) |
2314 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2315 | |
d62a17ae | 2316 | return 0; |
128ea8ab | 2317 | } |
2318 | ||
2319 | /* | |
2320 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2321 | * table as well as the per-VNI route table. | |
2322 | */ | |
d62a17ae | 2323 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2324 | { |
d62a17ae | 2325 | afi_t afi; |
2326 | safi_t safi; | |
9bcb3eef | 2327 | struct bgp_dest *dest; |
40381db7 | 2328 | struct bgp_path_info *pi; |
128ea8ab | 2329 | |
d62a17ae | 2330 | afi = AFI_L2VPN; |
2331 | safi = SAFI_EVPN; | |
128ea8ab | 2332 | |
d62a17ae | 2333 | /* First, walk the global route table for this VNI's type-2 local |
2334 | * routes. | |
2335 | * EVPN routes are a 2-level table, first get the RD table. | |
2336 | */ | |
2337 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2338 | |
d62a17ae | 2339 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2340 | for (dest = bgp_table_top(vpn->route_table); dest; |
2341 | dest = bgp_route_next(dest)) { | |
2342 | const struct prefix_evpn *evp = | |
2343 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2344 | |
d62a17ae | 2345 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2346 | continue; | |
128ea8ab | 2347 | |
9bcb3eef | 2348 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2349 | |
d62a17ae | 2350 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2351 | if (pi) |
9bcb3eef | 2352 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2353 | } |
128ea8ab | 2354 | |
d62a17ae | 2355 | return 0; |
128ea8ab | 2356 | } |
2357 | ||
50f74cf1 | 2358 | /* |
2359 | * Delete all routes in per ES route-table | |
2360 | */ | |
2361 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2362 | { | |
9bcb3eef | 2363 | struct bgp_dest *dest; |
40381db7 | 2364 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2365 | |
2366 | /* Walk this ES's route table and delete all routes. */ | |
9bcb3eef DS |
2367 | for (dest = bgp_table_top(es->route_table); dest; |
2368 | dest = bgp_route_next(dest)) { | |
2369 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2370 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2371 | bgp_path_info_delete(dest, pi); |
2372 | bgp_path_info_reap(dest, pi); | |
50f74cf1 | 2373 | } |
2374 | } | |
2375 | ||
2376 | return 0; | |
2377 | } | |
2378 | ||
128ea8ab | 2379 | /* |
2380 | * Delete all routes in the per-VNI route table. | |
2381 | */ | |
d62a17ae | 2382 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2383 | { |
9bcb3eef | 2384 | struct bgp_dest *dest; |
40381db7 | 2385 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2386 | |
d62a17ae | 2387 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2388 | for (dest = bgp_table_top(vpn->route_table); dest; |
2389 | dest = bgp_route_next(dest)) { | |
2390 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2391 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2392 | bgp_path_info_delete(dest, pi); |
2393 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2394 | } |
2395 | } | |
128ea8ab | 2396 | |
d62a17ae | 2397 | return 0; |
128ea8ab | 2398 | } |
2399 | ||
833b8a50 AK |
2400 | /* BUM traffic flood mode per-l2-vni */ |
2401 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2402 | struct bgpevpn *vpn) | |
2403 | { | |
2404 | /* if flooding has been globally disabled per-vni mode is | |
2405 | * not relevant | |
2406 | */ | |
2407 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2408 | return VXLAN_FLOOD_DISABLED; | |
2409 | ||
2410 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2411 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2412 | return VXLAN_FLOOD_PIM_SM; | |
2413 | ||
2414 | /* default is ingress replication */ | |
2415 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2416 | } | |
2417 | ||
128ea8ab | 2418 | /* |
2419 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2420 | * export RT getting modified or change to tunnel IP. Note that these | |
2421 | * situations need the route in the per-VNI table as well as the global | |
2422 | * table to be updated (as attributes change). | |
2423 | */ | |
0ca10580 | 2424 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2425 | { |
d62a17ae | 2426 | int ret; |
2427 | struct prefix_evpn p; | |
128ea8ab | 2428 | |
d62a17ae | 2429 | /* Update and advertise the type-3 route (only one) followed by the |
2430 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2431 | * |
2432 | * RT-3 only if doing head-end replication | |
d62a17ae | 2433 | */ |
833b8a50 AK |
2434 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2435 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
2436 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2437 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2438 | if (ret) | |
2439 | return ret; | |
2440 | } | |
128ea8ab | 2441 | |
d62a17ae | 2442 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2443 | } |
2444 | ||
50f74cf1 | 2445 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2446 | * Also remove all other routes from the per ES table. | |
2447 | * Invoked when ES is deleted. | |
2448 | */ | |
2449 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2450 | { | |
2451 | int ret; | |
2452 | char buf[ESI_STR_LEN]; | |
2453 | struct prefix_evpn p; | |
2454 | ||
2455 | /* Delete and withdraw locally learnt ES route */ | |
2456 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2457 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2458 | if (ret) { | |
e50f7cfd | 2459 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2460 | "%u failed to delete type-4 route for ESI %s", |
2461 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2462 | } |
2463 | ||
2464 | /* Delete all routes from per ES table */ | |
2465 | return delete_all_es_routes(bgp, es); | |
2466 | } | |
2467 | ||
128ea8ab | 2468 | /* |
2469 | * Delete (and withdraw) local routes for specified VNI from the global | |
2470 | * table and per-VNI table. After this, remove all other routes from | |
2471 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2472 | * (advertise-all-vni) being disabled. | |
2473 | */ | |
d62a17ae | 2474 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2475 | { |
d62a17ae | 2476 | int ret; |
2477 | struct prefix_evpn p; | |
128ea8ab | 2478 | |
d62a17ae | 2479 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2480 | * followed by type-3 routes (only one) - for this VNI. | |
2481 | */ | |
2482 | ret = delete_all_type2_routes(bgp, vpn); | |
2483 | if (ret) | |
2484 | return ret; | |
128ea8ab | 2485 | |
d62a17ae | 2486 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2487 | ret = delete_evpn_route(bgp, vpn, &p); | |
2488 | if (ret) | |
2489 | return ret; | |
128ea8ab | 2490 | |
d62a17ae | 2491 | /* Delete all routes from the per-VNI table. */ |
2492 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2493 | } |
2494 | ||
76d07c7a AK |
2495 | /* |
2496 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2497 | * remove the type-3 route if any. A new type-3 route will be generated | |
2498 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2499 | */ | |
2500 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2501 | struct in_addr mcast_grp) | |
2502 | { | |
2503 | struct prefix_evpn p; | |
2504 | ||
2505 | vpn->mcast_grp = mcast_grp; | |
2506 | ||
2507 | if (is_vni_live(vpn)) { | |
2508 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2509 | delete_evpn_route(bgp, vpn, &p); | |
2510 | } | |
2511 | ||
2512 | return 0; | |
2513 | } | |
2514 | ||
128ea8ab | 2515 | /* |
d1911c26 | 2516 | * There is a tunnel endpoint IP address change for this VNI, delete |
2517 | * prior type-3 route (if needed) and update. | |
2518 | * Note: Route re-advertisement happens elsewhere after other processing | |
2519 | * other changes. | |
128ea8ab | 2520 | */ |
d62a17ae | 2521 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2522 | struct in_addr originator_ip) | |
128ea8ab | 2523 | { |
d62a17ae | 2524 | struct prefix_evpn p; |
128ea8ab | 2525 | |
ddd16ed5 MK |
2526 | /* If VNI is not live, we only need to update the originator ip */ |
2527 | if (!is_vni_live(vpn)) { | |
2528 | vpn->originator_ip = originator_ip; | |
2529 | return 0; | |
2530 | } | |
2531 | ||
db0e1937 MK |
2532 | /* Update the tunnel-ip hash */ |
2533 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2534 | bgp_tip_add(bgp, &originator_ip); | |
2535 | ||
2536 | /* filter routes as martian nexthop db has changed */ | |
2537 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2538 | ||
d62a17ae | 2539 | /* Need to withdraw type-3 route as the originator IP is part |
2540 | * of the key. | |
2541 | */ | |
2542 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2543 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2544 | |
d62a17ae | 2545 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2546 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2547 | return 0; |
128ea8ab | 2548 | } |
2549 | ||
c011a88b DS |
2550 | static struct bgp_path_info * |
2551 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
9bcb3eef | 2552 | struct bgp_dest *dest, struct attr *attr) |
6b742349 DS |
2553 | { |
2554 | struct attr *attr_new; | |
2555 | struct bgp_path_info *pi; | |
2556 | ||
2557 | /* Add (or update) attribute to hash. */ | |
4e72ff72 | 2558 | attr_new = bgp_attr_intern(attr); |
6b742349 DS |
2559 | |
2560 | /* Create new route with its attribute. */ | |
2561 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
9bcb3eef | 2562 | attr_new, dest); |
6b742349 DS |
2563 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
2564 | bgp_path_info_extra_get(pi); | |
2565 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
9bcb3eef | 2566 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
6b742349 DS |
2567 | if (parent_pi->extra) { |
2568 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2569 | sizeof(pi->extra->label)); | |
2570 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
2571 | } | |
9bcb3eef | 2572 | bgp_path_info_add(dest, pi); |
c011a88b DS |
2573 | |
2574 | return pi; | |
6b742349 DS |
2575 | } |
2576 | ||
50f74cf1 | 2577 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2578 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
bd494ec5 | 2579 | const struct prefix_evpn *p, |
40381db7 | 2580 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2581 | { |
2582 | int ret = 0; | |
9bcb3eef | 2583 | struct bgp_dest *dest = NULL; |
40381db7 | 2584 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2585 | struct attr *attr_new = NULL; |
2586 | ||
2587 | /* Create (or fetch) route within the VNI. | |
2588 | * NOTE: There is no RD here. | |
2589 | */ | |
9bcb3eef | 2590 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
50f74cf1 | 2591 | |
2592 | /* Check if route entry is already present. */ | |
9bcb3eef | 2593 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2594 | if (pi->extra |
2595 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2596 | break; |
2597 | ||
40381db7 | 2598 | if (!pi) { |
50f74cf1 | 2599 | /* Add (or update) attribute to hash. */ |
40381db7 | 2600 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2601 | |
2602 | /* Create new route with its attribute. */ | |
40381db7 | 2603 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
9bcb3eef | 2604 | parent_pi->peer, attr_new, dest); |
40381db7 DS |
2605 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
2606 | bgp_path_info_extra_get(pi); | |
f4d7cb0e | 2607 | pi->extra->parent = bgp_path_info_lock(parent_pi); |
9bcb3eef DS |
2608 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
2609 | bgp_path_info_add(dest, pi); | |
50f74cf1 | 2610 | } else { |
40381db7 DS |
2611 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2612 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2613 | bgp_dest_unlock_node(dest); |
50f74cf1 | 2614 | return 0; |
2615 | } | |
2616 | /* The attribute has changed. */ | |
2617 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2618 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2619 | |
2620 | /* Restore route, if needed. */ | |
40381db7 | 2621 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2622 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2623 | |
2624 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2625 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2626 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2627 | |
2628 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2629 | bgp_attr_unintern(&pi->attr); |
2630 | pi->attr = attr_new; | |
2631 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2632 | } |
2633 | ||
2634 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2635 | ret = evpn_es_route_select_install(bgp, es, dest); |
50f74cf1 | 2636 | return ret; |
2637 | } | |
2638 | ||
d3135ba3 | 2639 | /* |
2640 | * Install route entry into the VRF routing table and invoke route selection. | |
2641 | */ | |
2642 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2643 | const struct prefix_evpn *evp, |
40381db7 | 2644 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2645 | { |
9bcb3eef | 2646 | struct bgp_dest *dest; |
40381db7 | 2647 | struct bgp_path_info *pi; |
1ec31309 | 2648 | struct attr attr; |
d3135ba3 | 2649 | struct attr *attr_new; |
c4edf708 | 2650 | int ret = 0; |
d3135ba3 | 2651 | struct prefix p; |
2652 | struct prefix *pp = &p; | |
2653 | afi_t afi = 0; | |
2654 | safi_t safi = 0; | |
1eb88002 | 2655 | char buf[PREFIX_STRLEN]; |
5f0c5ec8 | 2656 | bool new_pi = false; |
d3135ba3 | 2657 | |
2658 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2659 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2660 | |
1eb88002 | 2661 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2662 | zlog_debug( |
5f0c5ec8 | 2663 | "vrf %s: import evpn prefix %s parent %p flags 0x%x", |
2664 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2665 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2666 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2667 | } |
2668 | ||
d3135ba3 | 2669 | /* Create (or fetch) route within the VRF. */ |
2670 | /* NOTE: There is no RD here. */ | |
3714a385 | 2671 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2672 | afi = AFI_IP; |
2673 | safi = SAFI_UNICAST; | |
9bcb3eef | 2674 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2675 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2676 | afi = AFI_IP6; |
2677 | safi = SAFI_UNICAST; | |
9bcb3eef | 2678 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2679 | } else |
2680 | return 0; | |
2681 | ||
1ec31309 | 2682 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2683 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2684 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2685 | * address for the rest of the code to flow through. In the case of IPv4, | |
2686 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2687 | */ |
6f4f49b2 | 2688 | attr = *parent_pi->attr; |
1ec31309 | 2689 | if (afi == AFI_IP6) |
2690 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2691 | else |
2692 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2693 | |
d3135ba3 | 2694 | /* Check if route entry is already present. */ |
9bcb3eef | 2695 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2696 | if (pi->extra |
2697 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2698 | break; |
2699 | ||
5f0c5ec8 | 2700 | if (!pi) { |
9bcb3eef | 2701 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2702 | new_pi = true; |
2703 | } else { | |
40381db7 DS |
2704 | if (attrhash_cmp(pi->attr, &attr) |
2705 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2706 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2707 | return 0; |
2708 | } | |
2709 | /* The attribute has changed. */ | |
2710 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2711 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2712 | |
2713 | /* Restore route, if needed. */ | |
40381db7 | 2714 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2715 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2716 | |
2717 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2718 | if ((afi == AFI_IP |
2719 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2720 | || (afi == AFI_IP6 | |
2721 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2722 | &attr_new->mp_nexthop_global))) | |
2723 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2724 | |
9bcb3eef | 2725 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2726 | /* Unintern existing, set to new. */ |
40381db7 DS |
2727 | bgp_attr_unintern(&pi->attr); |
2728 | pi->attr = attr_new; | |
2729 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2730 | } |
d846e917 | 2731 | /* as it is an importation, change nexthop */ |
9bcb3eef | 2732 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); |
d3135ba3 | 2733 | |
9bcb3eef | 2734 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2735 | safi); |
b49cdf4c | 2736 | |
d3135ba3 | 2737 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2738 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2739 | |
7452e879 | 2740 | /* Process for route leaking. */ |
2741 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2742 | ||
9bcb3eef | 2743 | bgp_dest_unlock_node(dest); |
3c11d70a | 2744 | |
5f0c5ec8 | 2745 | if (bgp_debug_zebra(NULL)) |
2746 | zlog_debug( | |
9bcb3eef | 2747 | "... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
5f0c5ec8 | 2748 | new_pi ? "new" : "update", |
9bcb3eef DS |
2749 | dest, bgp_dest_to_rnode(dest)->lock, |
2750 | pi, pi->lock, pi->flags); | |
5f0c5ec8 | 2751 | |
d3135ba3 | 2752 | return ret; |
2753 | } | |
2754 | ||
128ea8ab | 2755 | /* |
2756 | * Install route entry into the VNI routing table and invoke route selection. | |
2757 | */ | |
d62a17ae | 2758 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2759 | const struct prefix_evpn *p, |
40381db7 | 2760 | struct bgp_path_info *parent_pi) |
d62a17ae | 2761 | { |
9bcb3eef | 2762 | struct bgp_dest *dest; |
40381db7 | 2763 | struct bgp_path_info *pi; |
d62a17ae | 2764 | struct attr *attr_new; |
2765 | int ret; | |
2766 | ||
2767 | /* Create (or fetch) route within the VNI. */ | |
2768 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2769 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2770 | |
2771 | /* Check if route entry is already present. */ | |
9bcb3eef | 2772 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2773 | if (pi->extra |
2774 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2775 | break; |
2776 | ||
bd0254af MS |
2777 | if (!pi) { |
2778 | /* Create an info */ | |
9bcb3eef | 2779 | (void)bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2780 | parent_pi->attr); |
bd0254af | 2781 | } else { |
40381db7 DS |
2782 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2783 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2784 | bgp_dest_unlock_node(dest); |
d62a17ae | 2785 | return 0; |
2786 | } | |
2787 | /* The attribute has changed. */ | |
2788 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2789 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2790 | |
50f74cf1 | 2791 | /* Restore route, if needed. */ |
40381db7 | 2792 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2793 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2794 | |
2795 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2796 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2797 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2798 | |
2799 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2800 | bgp_attr_unintern(&pi->attr); |
2801 | pi->attr = attr_new; | |
2802 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2803 | } |
2804 | ||
2805 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2806 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2807 | |
9bcb3eef | 2808 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2809 | |
50f74cf1 | 2810 | return ret; |
2811 | } | |
2812 | ||
2813 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2814 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
bd494ec5 | 2815 | const struct prefix_evpn *p, |
40381db7 | 2816 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2817 | { |
2818 | int ret; | |
9bcb3eef | 2819 | struct bgp_dest *dest; |
40381db7 | 2820 | struct bgp_path_info *pi; |
50f74cf1 | 2821 | |
2822 | if (!es->route_table) | |
2823 | return 0; | |
2824 | ||
2825 | /* Locate route within the ESI. | |
2826 | * NOTE: There is no RD here. | |
2827 | */ | |
9bcb3eef DS |
2828 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
2829 | if (!dest) | |
50f74cf1 | 2830 | return 0; |
2831 | ||
2832 | /* Find matching route entry. */ | |
9bcb3eef | 2833 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2834 | if (pi->extra |
2835 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2836 | break; |
d62a17ae | 2837 | |
40381db7 | 2838 | if (!pi) |
50f74cf1 | 2839 | return 0; |
d62a17ae | 2840 | |
50f74cf1 | 2841 | /* Mark entry for deletion */ |
9bcb3eef | 2842 | bgp_path_info_delete(dest, pi); |
d62a17ae | 2843 | |
2844 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2845 | ret = evpn_es_route_select_install(bgp, es, dest); |
50f74cf1 | 2846 | |
2847 | /* Unlock route node. */ | |
9bcb3eef | 2848 | bgp_dest_unlock_node(dest); |
d62a17ae | 2849 | |
2850 | return ret; | |
128ea8ab | 2851 | } |
2852 | ||
d3135ba3 | 2853 | /* |
2854 | * Uninstall route entry from the VRF routing table and send message | |
2855 | * to zebra, if appropriate. | |
2856 | */ | |
2857 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2858 | const struct prefix_evpn *evp, |
40381db7 | 2859 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2860 | { |
9bcb3eef | 2861 | struct bgp_dest *dest; |
40381db7 | 2862 | struct bgp_path_info *pi; |
c4edf708 | 2863 | int ret = 0; |
d3135ba3 | 2864 | struct prefix p; |
2865 | struct prefix *pp = &p; | |
2866 | afi_t afi = 0; | |
2867 | safi_t safi = 0; | |
1eb88002 | 2868 | char buf[PREFIX_STRLEN]; |
d3135ba3 | 2869 | |
2870 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2871 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2872 | |
1eb88002 | 2873 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2874 | zlog_debug( |
5f0c5ec8 | 2875 | "vrf %s: unimport evpn prefix %s parent %p flags 0x%x", |
2876 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2877 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2878 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2879 | } |
2880 | ||
d3135ba3 | 2881 | /* Locate route within the VRF. */ |
2882 | /* NOTE: There is no RD here. */ | |
3714a385 | 2883 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2884 | afi = AFI_IP; |
2885 | safi = SAFI_UNICAST; | |
9bcb3eef | 2886 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2887 | } else { |
2888 | afi = AFI_IP6; | |
2889 | safi = SAFI_UNICAST; | |
9bcb3eef | 2890 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2891 | } |
2892 | ||
9bcb3eef | 2893 | if (!dest) |
d3135ba3 | 2894 | return 0; |
2895 | ||
2896 | /* Find matching route entry. */ | |
9bcb3eef | 2897 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2898 | if (pi->extra |
2899 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2900 | break; |
2901 | ||
40381db7 | 2902 | if (!pi) |
d3135ba3 | 2903 | return 0; |
2904 | ||
5f0c5ec8 | 2905 | if (bgp_debug_zebra(NULL)) |
2906 | zlog_debug( | |
9bcb3eef DS |
2907 | "... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2908 | dest, bgp_dest_to_rnode(dest)->lock, | |
2909 | pi, pi->lock, pi->flags); | |
5f0c5ec8 | 2910 | |
7452e879 | 2911 | /* Process for route leaking. */ |
2912 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2913 | ||
9bcb3eef | 2914 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2915 | safi); |
4c7a11d5 | 2916 | |
d3135ba3 | 2917 | /* Mark entry for deletion */ |
9bcb3eef | 2918 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2919 | |
2920 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2921 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2922 | |
2923 | /* Unlock route node. */ | |
9bcb3eef | 2924 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2925 | |
2926 | return ret; | |
2927 | } | |
2928 | ||
128ea8ab | 2929 | /* |
2930 | * Uninstall route entry from the VNI routing table and send message | |
2931 | * to zebra, if appropriate. | |
2932 | */ | |
d62a17ae | 2933 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2934 | const struct prefix_evpn *p, |
40381db7 | 2935 | struct bgp_path_info *parent_pi) |
128ea8ab | 2936 | { |
9bcb3eef | 2937 | struct bgp_dest *dest; |
40381db7 | 2938 | struct bgp_path_info *pi; |
d62a17ae | 2939 | int ret; |
128ea8ab | 2940 | |
d62a17ae | 2941 | /* Locate route within the VNI. */ |
2942 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2943 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2944 | if (!dest) | |
d62a17ae | 2945 | return 0; |
128ea8ab | 2946 | |
d62a17ae | 2947 | /* Find matching route entry. */ |
9bcb3eef | 2948 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2949 | if (pi->extra |
2950 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2951 | break; |
128ea8ab | 2952 | |
40381db7 | 2953 | if (!pi) |
d62a17ae | 2954 | return 0; |
128ea8ab | 2955 | |
d62a17ae | 2956 | /* Mark entry for deletion */ |
9bcb3eef | 2957 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2958 | |
d62a17ae | 2959 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2960 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2961 | |
d62a17ae | 2962 | /* Unlock route node. */ |
9bcb3eef | 2963 | bgp_dest_unlock_node(dest); |
128ea8ab | 2964 | |
d62a17ae | 2965 | return ret; |
128ea8ab | 2966 | } |
2967 | ||
50f74cf1 | 2968 | /* |
2969 | * Given a prefix, see if it belongs to ES. | |
2970 | */ | |
bd494ec5 | 2971 | static int is_prefix_matching_for_es(const struct prefix_evpn *p, |
50f74cf1 | 2972 | struct evpnes *es) |
2973 | { | |
2974 | /* if not an ES route return false */ | |
2975 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2976 | return 0; | |
2977 | ||
2978 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2979 | return 1; | |
2980 | ||
2981 | return 0; | |
2982 | } | |
2983 | ||
5ba238b7 MK |
2984 | /* |
2985 | * Given a route entry and a VRF, see if this route entry should be | |
2986 | * imported into the VRF i.e., RTs match. | |
2987 | */ | |
4b7e6066 | 2988 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2989 | struct bgp_path_info *pi) |
5ba238b7 | 2990 | { |
40381db7 | 2991 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2992 | struct ecommunity *ecom; |
2993 | int i; | |
2994 | ||
2995 | assert(attr); | |
2996 | /* Route should have valid RT to be even considered. */ | |
2997 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2998 | return 0; | |
2999 | ||
3000 | ecom = attr->ecommunity; | |
3001 | if (!ecom || !ecom->size) | |
3002 | return 0; | |
3003 | ||
3004 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3005 | * matches, we're done. | |
3006 | */ | |
3007 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3008 | uint8_t *pnt; |
3009 | uint8_t type, sub_type; | |
5ba238b7 MK |
3010 | struct ecommunity_val *eval; |
3011 | struct ecommunity_val eval_tmp; | |
3012 | struct vrf_irt_node *irt; | |
3013 | ||
3014 | /* Only deal with RTs */ | |
3015 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3016 | eval = (struct ecommunity_val *)(ecom->val | |
3017 | + (i * ECOMMUNITY_SIZE)); | |
3018 | type = *pnt++; | |
3019 | sub_type = *pnt++; | |
3020 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3021 | continue; | |
3022 | ||
3023 | /* See if this RT matches specified VNIs import RTs */ | |
3024 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 3025 | if (irt) |
5ba238b7 MK |
3026 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3027 | return 1; | |
3028 | ||
3029 | /* Also check for non-exact match. In this, we mask out the AS | |
3030 | * and | |
3031 | * only check on the local-admin sub-field. This is to | |
3032 | * facilitate using | |
3033 | * VNI as the RT for EBGP peering too. | |
3034 | */ | |
3035 | irt = NULL; | |
3036 | if (type == ECOMMUNITY_ENCODE_AS | |
3037 | || type == ECOMMUNITY_ENCODE_AS4 | |
3038 | || type == ECOMMUNITY_ENCODE_IP) { | |
3039 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3040 | mask_ecom_global_admin(&eval_tmp, eval); | |
3041 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3042 | } | |
5d9cbca2 | 3043 | if (irt) |
5ba238b7 MK |
3044 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3045 | return 1; | |
3046 | } | |
3047 | ||
3048 | return 0; | |
3049 | } | |
3050 | ||
128ea8ab | 3051 | /* |
3052 | * Given a route entry and a VNI, see if this route entry should be | |
3053 | * imported into the VNI i.e., RTs match. | |
3054 | */ | |
d62a17ae | 3055 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3056 | struct bgp_path_info *pi) |
d62a17ae | 3057 | { |
40381db7 | 3058 | struct attr *attr = pi->attr; |
d62a17ae | 3059 | struct ecommunity *ecom; |
3060 | int i; | |
3061 | ||
3062 | assert(attr); | |
3063 | /* Route should have valid RT to be even considered. */ | |
3064 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3065 | return 0; | |
3066 | ||
3067 | ecom = attr->ecommunity; | |
3068 | if (!ecom || !ecom->size) | |
3069 | return 0; | |
3070 | ||
3071 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3072 | * matches, we're done. | |
3073 | */ | |
3074 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3075 | uint8_t *pnt; |
3076 | uint8_t type, sub_type; | |
d62a17ae | 3077 | struct ecommunity_val *eval; |
3078 | struct ecommunity_val eval_tmp; | |
3079 | struct irt_node *irt; | |
3080 | ||
3081 | /* Only deal with RTs */ | |
3082 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3083 | eval = (struct ecommunity_val *)(ecom->val | |
3084 | + (i * ECOMMUNITY_SIZE)); | |
3085 | type = *pnt++; | |
3086 | sub_type = *pnt++; | |
3087 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3088 | continue; | |
3089 | ||
3090 | /* See if this RT matches specified VNIs import RTs */ | |
3091 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3092 | if (irt) |
d62a17ae | 3093 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3094 | return 1; | |
3095 | ||
3096 | /* Also check for non-exact match. In this, we mask out the AS | |
3097 | * and | |
3098 | * only check on the local-admin sub-field. This is to | |
3099 | * facilitate using | |
3100 | * VNI as the RT for EBGP peering too. | |
3101 | */ | |
3102 | irt = NULL; | |
3103 | if (type == ECOMMUNITY_ENCODE_AS | |
3104 | || type == ECOMMUNITY_ENCODE_AS4 | |
3105 | || type == ECOMMUNITY_ENCODE_IP) { | |
3106 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3107 | mask_ecom_global_admin(&eval_tmp, eval); | |
3108 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3109 | } | |
b1ab0dfe | 3110 | if (irt) |
d62a17ae | 3111 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3112 | return 1; | |
3113 | } | |
3114 | ||
3115 | return 0; | |
128ea8ab | 3116 | } |
3117 | ||
50f74cf1 | 3118 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
3119 | struct evpnes *es, | |
3120 | int install) | |
3121 | { | |
3122 | int ret; | |
3123 | afi_t afi; | |
3124 | safi_t safi; | |
3125 | char buf[PREFIX_STRLEN]; | |
3126 | char buf1[ESI_STR_LEN]; | |
9bcb3eef | 3127 | struct bgp_dest *rd_dest, *dest; |
50f74cf1 | 3128 | struct bgp_table *table; |
40381db7 | 3129 | struct bgp_path_info *pi; |
50f74cf1 | 3130 | |
3131 | afi = AFI_L2VPN; | |
3132 | safi = SAFI_EVPN; | |
3133 | ||
2bb9eff4 DS |
3134 | /* |
3135 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 3136 | * imported into this VRF. Note that we need to loop through all global |
3137 | * routes to determine which route matches the import rt on vrf | |
3138 | */ | |
9bcb3eef DS |
3139 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3140 | rd_dest = bgp_route_next(rd_dest)) { | |
3141 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
50f74cf1 | 3142 | if (!table) |
3143 | continue; | |
3144 | ||
9bcb3eef DS |
3145 | for (dest = bgp_table_top(table); dest; |
3146 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3147 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3148 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3149 | dest); | |
50f74cf1 | 3150 | |
9bcb3eef | 3151 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3152 | pi = pi->next) { |
2bb9eff4 DS |
3153 | /* |
3154 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 3155 | * this ES. |
3156 | */ | |
40381db7 DS |
3157 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3158 | && pi->type == ZEBRA_ROUTE_BGP | |
3159 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 3160 | continue; |
3161 | ||
2bb9eff4 DS |
3162 | if (!is_prefix_matching_for_es(evp, es)) |
3163 | continue; | |
50f74cf1 | 3164 | |
2bb9eff4 DS |
3165 | if (install) |
3166 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 3167 | bgp, es, evp, pi); |
2bb9eff4 DS |
3168 | else |
3169 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 3170 | bgp, es, evp, pi); |
2bb9eff4 DS |
3171 | |
3172 | if (ret) { | |
af4c2728 | 3173 | flog_err( |
e50f7cfd | 3174 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
3175 | "Failed to %s EVPN %s route in ESI %s", |
3176 | install ? "install" | |
3177 | : "uninstall", | |
3178 | prefix2str(evp, buf, | |
3179 | sizeof(buf)), | |
3180 | esi_to_str(&es->esi, buf1, | |
3181 | sizeof(buf1))); | |
3182 | return ret; | |
50f74cf1 | 3183 | } |
3184 | } | |
3185 | } | |
3186 | } | |
3187 | return 0; | |
3188 | } | |
3189 | ||
47bf0432 CS |
3190 | /* This API will scan evpn routes for checking attribute's rmac |
3191 | * macthes with bgp instance router mac. It avoid installing | |
3192 | * route into bgp vrf table and remote rmac in bridge table. | |
3193 | */ | |
3194 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3195 | const struct prefix_evpn *evp, |
47bf0432 CS |
3196 | struct bgp_path_info *pi) |
3197 | { | |
3198 | /* evpn route could have learnt prior to L3vni has come up, | |
3199 | * perform rmac check before installing route and | |
3200 | * remote router mac. | |
3201 | * The route will be removed from global bgp table once | |
3202 | * SVI comes up with MAC and stored in hash, triggers | |
3203 | * bgp_mac_rescan_all_evpn_tables. | |
3204 | */ | |
05864da7 | 3205 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
3206 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
3207 | char buf1[PREFIX_STRLEN]; | |
3208 | char attr_str[BUFSIZ] = {0}; | |
3209 | ||
3210 | bgp_dump_attr(pi->attr, attr_str, BUFSIZ); | |
3211 | ||
3212 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
3213 | __func__, bgp_vrf->vrf_id, | |
3214 | prefix2str(evp, buf1, sizeof(buf1)), | |
3215 | attr_str); | |
3216 | } | |
3217 | ||
3218 | return 1; | |
3219 | } | |
3220 | ||
3221 | return 0; | |
3222 | } | |
3223 | ||
5ba238b7 MK |
3224 | /* |
3225 | * Install or uninstall mac-ip routes are appropriate for this | |
3226 | * particular VRF. | |
3227 | */ | |
996c9314 | 3228 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3229 | { |
3230 | afi_t afi; | |
3231 | safi_t safi; | |
9bcb3eef | 3232 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3233 | struct bgp_table *table; |
40381db7 | 3234 | struct bgp_path_info *pi; |
5ba238b7 MK |
3235 | int ret; |
3236 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 3237 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3238 | |
3239 | afi = AFI_L2VPN; | |
3240 | safi = SAFI_EVPN; | |
5e53dce3 T |
3241 | bgp_evpn = bgp_get_evpn(); |
3242 | if (!bgp_evpn) | |
5ba238b7 MK |
3243 | return -1; |
3244 | ||
3245 | /* Walk entire global routing table and evaluate routes which could be | |
3246 | * imported into this VRF. Note that we need to loop through all global | |
3247 | * routes to determine which route matches the import rt on vrf | |
3248 | */ | |
9bcb3eef DS |
3249 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3250 | rd_dest = bgp_route_next(rd_dest)) { | |
3251 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3252 | if (!table) |
3253 | continue; | |
3254 | ||
9bcb3eef DS |
3255 | for (dest = bgp_table_top(table); dest; |
3256 | dest = bgp_route_next(dest)) { | |
3257 | const struct prefix_evpn *evp = | |
3258 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3259 | dest); | |
5ba238b7 | 3260 | |
1eb88002 | 3261 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3262 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3263 | || evp->prefix.route_type | |
3264 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3265 | continue; |
3266 | ||
1eb88002 | 3267 | /* if not a mac+ip route skip this route */ |
3714a385 | 3268 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3269 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3270 | continue; |
3271 | ||
9bcb3eef | 3272 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3273 | pi = pi->next) { |
5ba238b7 | 3274 | /* Consider "valid" remote routes applicable for |
523cafc4 | 3275 | * this VRF. |
3276 | */ | |
40381db7 DS |
3277 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3278 | && pi->type == ZEBRA_ROUTE_BGP | |
3279 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3280 | continue; |
3281 | ||
40381db7 | 3282 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
3283 | if (bgp_evpn_route_rmac_self_check( |
3284 | bgp_vrf, evp, pi)) | |
3285 | continue; | |
3286 | ||
5ba238b7 | 3287 | if (install) |
996c9314 | 3288 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3289 | bgp_vrf, evp, pi); |
5ba238b7 | 3290 | else |
996c9314 | 3291 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3292 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3293 | |
3294 | if (ret) { | |
af4c2728 | 3295 | flog_err( |
e50f7cfd | 3296 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3297 | "Failed to %s EVPN %s route in VRF %s", |
3298 | install ? "install" | |
3299 | : "uninstall", | |
3300 | prefix2str(evp, buf, | |
3301 | sizeof(buf)), | |
996c9314 LB |
3302 | vrf_id_to_name( |
3303 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3304 | return ret; |
3305 | } | |
3306 | } | |
3307 | } | |
3308 | } | |
3309 | } | |
3310 | ||
3311 | return 0; | |
3312 | } | |
3313 | ||
128ea8ab | 3314 | /* |
3315 | * Install or uninstall routes of specified type that are appropriate for this | |
3316 | * particular VNI. | |
3317 | */ | |
d62a17ae | 3318 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3319 | struct bgpevpn *vpn, | |
3320 | bgp_evpn_route_type rtype, | |
3321 | int install) | |
3322 | { | |
0291c246 MK |
3323 | afi_t afi; |
3324 | safi_t safi; | |
9bcb3eef | 3325 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3326 | struct bgp_table *table; |
40381db7 | 3327 | struct bgp_path_info *pi; |
0291c246 | 3328 | int ret; |
d62a17ae | 3329 | |
3330 | afi = AFI_L2VPN; | |
3331 | safi = SAFI_EVPN; | |
3332 | ||
3333 | /* Walk entire global routing table and evaluate routes which could be | |
3334 | * imported into this VPN. Note that we cannot just look at the routes | |
3335 | * for | |
3336 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3337 | * RD. | |
3338 | */ | |
3339 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3340 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3341 | rd_dest = bgp_route_next(rd_dest)) { | |
3342 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3343 | if (!table) |
3344 | continue; | |
3345 | ||
9bcb3eef DS |
3346 | for (dest = bgp_table_top(table); dest; |
3347 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3348 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3349 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3350 | dest); | |
d62a17ae | 3351 | |
3352 | if (evp->prefix.route_type != rtype) | |
3353 | continue; | |
3354 | ||
9bcb3eef | 3355 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3356 | pi = pi->next) { |
d62a17ae | 3357 | /* Consider "valid" remote routes applicable for |
3358 | * this VNI. */ | |
40381db7 DS |
3359 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3360 | && pi->type == ZEBRA_ROUTE_BGP | |
3361 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3362 | continue; |
3363 | ||
40381db7 | 3364 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3365 | if (install) |
3366 | ret = install_evpn_route_entry( | |
40381db7 | 3367 | bgp, vpn, evp, pi); |
d62a17ae | 3368 | else |
3369 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3370 | bgp, vpn, evp, pi); |
d62a17ae | 3371 | |
3372 | if (ret) { | |
af4c2728 | 3373 | flog_err( |
e50f7cfd | 3374 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3375 | "%u: Failed to %s EVPN %s route in VNI %u", |
3376 | bgp->vrf_id, | |
3377 | install ? "install" | |
3378 | : "uninstall", | |
3379 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3380 | ? "MACIP" | |
3381 | : "IMET", | |
3382 | vpn->vni); | |
3383 | return ret; | |
3384 | } | |
3385 | } | |
3386 | } | |
3387 | } | |
3388 | } | |
3389 | ||
3390 | return 0; | |
128ea8ab | 3391 | } |
3392 | ||
50f74cf1 | 3393 | /* Install any existing remote ES routes applicable for this ES into its routing |
3394 | * table. This is invoked when ES comes up. | |
3395 | */ | |
3396 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3397 | { | |
3398 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3399 | } | |
3400 | ||
3401 | ||
5ba238b7 | 3402 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3403 | * is invoked upon l3vni-add or l3vni import rt change |
3404 | */ | |
5ba238b7 MK |
3405 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3406 | { | |
3407 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3408 | return 0; | |
3409 | } | |
3410 | ||
128ea8ab | 3411 | /* |
3412 | * Install any existing remote routes applicable for this VNI into its | |
3413 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3414 | * RT is changed. | |
3415 | */ | |
d62a17ae | 3416 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3417 | { |
d62a17ae | 3418 | int ret; |
128ea8ab | 3419 | |
d62a17ae | 3420 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3421 | * for this VNI. | |
3422 | */ | |
3423 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3424 | 1); | |
3425 | if (ret) | |
3426 | return ret; | |
128ea8ab | 3427 | |
d62a17ae | 3428 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3429 | 1); | |
128ea8ab | 3430 | } |
3431 | ||
5ba238b7 MK |
3432 | /* uninstall routes from l3vni vrf. */ |
3433 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3434 | { | |
3435 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3436 | return 0; | |
3437 | } | |
3438 | ||
90e60aa7 | 3439 | /* |
3440 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3441 | * this is invoked is upon an import RT change. | |
3442 | */ | |
d62a17ae | 3443 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3444 | { |
d62a17ae | 3445 | int ret; |
90e60aa7 | 3446 | |
d62a17ae | 3447 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3448 | * applicable | |
3449 | * for this VNI. | |
3450 | */ | |
3451 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3452 | 0); | |
3453 | if (ret) | |
3454 | return ret; | |
90e60aa7 | 3455 | |
d62a17ae | 3456 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3457 | 0); | |
90e60aa7 | 3458 | } |
3459 | ||
50f74cf1 | 3460 | /* Install or unistall route in ES */ |
3461 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3462 | afi_t afi, safi_t safi, | |
3463 | struct prefix_evpn *evp, | |
40381db7 | 3464 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3465 | { |
3466 | int ret = 0; | |
3467 | char buf[ESI_STR_LEN]; | |
3468 | ||
3469 | if (install) | |
40381db7 | 3470 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3471 | else |
40381db7 | 3472 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3473 | |
3474 | if (ret) { | |
af4c2728 | 3475 | flog_err( |
e50f7cfd | 3476 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3477 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3478 | install ? "install" : "uninstall", "ES", | |
3479 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3480 | return ret; |
3481 | } | |
3482 | return 0; | |
3483 | } | |
3484 | ||
d3135ba3 | 3485 | /* |
3486 | * Install or uninstall route in matching VRFs (list). | |
3487 | */ | |
3488 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3489 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3490 | struct bgp_path_info *pi, |
d3135ba3 | 3491 | struct list *vrfs, int install) |
3492 | { | |
3493 | char buf[PREFIX2STR_BUFFER]; | |
3494 | struct bgp *bgp_vrf; | |
3495 | struct listnode *node, *nnode; | |
3496 | ||
90264d64 | 3497 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3498 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3499 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3500 | return 0; |
3501 | ||
90264d64 | 3502 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3503 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3504 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3505 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3506 | return 0; |
3507 | ||
d3135ba3 | 3508 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3509 | int ret; | |
3510 | ||
3511 | if (install) | |
40381db7 | 3512 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3513 | else |
996c9314 | 3514 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3515 | pi); |
d3135ba3 | 3516 | |
3517 | if (ret) { | |
e50f7cfd | 3518 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3519 | "%u: Failed to %s prefix %s in VRF %s", |
3520 | bgp_def->vrf_id, | |
3521 | install ? "install" : "uninstall", | |
3522 | prefix2str(evp, buf, sizeof(buf)), | |
3523 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3524 | return ret; |
3525 | } | |
3526 | } | |
3527 | ||
3528 | return 0; | |
3529 | } | |
3530 | ||
128ea8ab | 3531 | /* |
3532 | * Install or uninstall route in matching VNIs (list). | |
3533 | */ | |
d62a17ae | 3534 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3535 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3536 | struct bgp_path_info *pi, |
d62a17ae | 3537 | struct list *vnis, int install) |
128ea8ab | 3538 | { |
d62a17ae | 3539 | struct bgpevpn *vpn; |
3540 | struct listnode *node, *nnode; | |
128ea8ab | 3541 | |
d62a17ae | 3542 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3543 | int ret; | |
128ea8ab | 3544 | |
d62a17ae | 3545 | if (!is_vni_live(vpn)) |
3546 | continue; | |
128ea8ab | 3547 | |
d62a17ae | 3548 | if (install) |
40381db7 | 3549 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3550 | else |
40381db7 | 3551 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3552 | |
d62a17ae | 3553 | if (ret) { |
1c50c1c0 QY |
3554 | flog_err(EC_BGP_EVPN_FAIL, |
3555 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3556 | bgp->vrf_id, install ? "install" : "uninstall", | |
3557 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3558 | ? "MACIP" | |
3559 | : "IMET", | |
3560 | vpn->vni); | |
d62a17ae | 3561 | return ret; |
3562 | } | |
3563 | } | |
128ea8ab | 3564 | |
d62a17ae | 3565 | return 0; |
128ea8ab | 3566 | } |
3567 | ||
3568 | /* | |
50f74cf1 | 3569 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3570 | */ |
d62a17ae | 3571 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 3572 | const struct prefix *p, |
40381db7 | 3573 | struct bgp_path_info *pi, int import) |
d62a17ae | 3574 | { |
3575 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3576 | struct attr *attr = pi->attr; |
d62a17ae | 3577 | struct ecommunity *ecom; |
3578 | int i; | |
3579 | ||
3580 | assert(attr); | |
3581 | ||
50f74cf1 | 3582 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3583 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3584 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3585 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3586 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3587 | return 0; |
3588 | ||
3589 | /* If we don't have Route Target, nothing much to do. */ | |
3590 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3591 | return 0; | |
3592 | ||
3593 | ecom = attr->ecommunity; | |
3594 | if (!ecom || !ecom->size) | |
3595 | return -1; | |
3596 | ||
50f74cf1 | 3597 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3598 | * attached to the route */ | |
d62a17ae | 3599 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3600 | uint8_t *pnt; |
3601 | uint8_t type, sub_type; | |
d62a17ae | 3602 | struct ecommunity_val *eval; |
3603 | struct ecommunity_val eval_tmp; | |
996c9314 | 3604 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3605 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3606 | struct evpnes *es; |
d62a17ae | 3607 | |
3608 | /* Only deal with RTs */ | |
3609 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3610 | eval = (struct ecommunity_val *)(ecom->val | |
3611 | + (i * ECOMMUNITY_SIZE)); | |
3612 | type = *pnt++; | |
3613 | sub_type = *pnt++; | |
3614 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3615 | continue; | |
3616 | ||
50f74cf1 | 3617 | /* |
3618 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3619 | * IMET route is imported into VNI table. | |
3620 | * prefix routes are imported into VRF table. | |
523cafc4 | 3621 | */ |
50f74cf1 | 3622 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3623 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3624 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3625 | |
50f74cf1 | 3626 | irt = lookup_import_rt(bgp, eval); |
3627 | if (irt) | |
40381db7 DS |
3628 | install_uninstall_route_in_vnis( |
3629 | bgp, afi, safi, evp, pi, irt->vnis, | |
3630 | import); | |
50f74cf1 | 3631 | |
3632 | vrf_irt = lookup_vrf_import_rt(eval); | |
3633 | if (vrf_irt) | |
40381db7 DS |
3634 | install_uninstall_route_in_vrfs( |
3635 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3636 | import); | |
50f74cf1 | 3637 | |
3638 | /* Also check for non-exact match. | |
3639 | * In this, we mask out the AS and | |
3640 | * only check on the local-admin sub-field. | |
3641 | * This is to facilitate using | |
3642 | * VNI as the RT for EBGP peering too. | |
3643 | */ | |
3644 | irt = NULL; | |
3645 | vrf_irt = NULL; | |
3646 | if (type == ECOMMUNITY_ENCODE_AS | |
3647 | || type == ECOMMUNITY_ENCODE_AS4 | |
3648 | || type == ECOMMUNITY_ENCODE_IP) { | |
3649 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3650 | mask_ecom_global_admin(&eval_tmp, eval); | |
3651 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3652 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3653 | } | |
3654 | ||
3655 | if (irt) | |
40381db7 DS |
3656 | install_uninstall_route_in_vnis( |
3657 | bgp, afi, safi, evp, pi, irt->vnis, | |
3658 | import); | |
50f74cf1 | 3659 | if (vrf_irt) |
40381db7 DS |
3660 | install_uninstall_route_in_vrfs( |
3661 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3662 | import); | |
50f74cf1 | 3663 | } |
3664 | ||
3665 | /* es route is imported into the es table */ | |
3666 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3667 | ||
3668 | /* we will match based on the entire esi to avoid | |
3669 | * imoort of an es route for esi2 into esi1 | |
3670 | */ | |
3671 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3672 | if (es && is_es_local(es)) | |
40381db7 DS |
3673 | install_uninstall_route_in_es( |
3674 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3675 | } |
d62a17ae | 3676 | } |
3677 | ||
3678 | return 0; | |
128ea8ab | 3679 | } |
3680 | ||
2bb9eff4 DS |
3681 | /* |
3682 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3683 | * routes | |
3684 | */ | |
80b140af MK |
3685 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3686 | { | |
5fd9c12b KA |
3687 | /* Delete ipv4 default route and withdraw from peers */ |
3688 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3689 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3690 | SAFI_UNICAST, false); | |
3691 | ||
80b140af | 3692 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3693 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3694 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3695 | |
5fd9c12b KA |
3696 | /* Delete ipv6 default route and withdraw from peers */ |
3697 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3698 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3699 | SAFI_UNICAST, false); | |
3700 | ||
80b140af | 3701 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3702 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3703 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3704 | } |
3705 | ||
2bb9eff4 DS |
3706 | /* |
3707 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3708 | * routes | |
3709 | */ | |
5394a276 | 3710 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3711 | { |
5394a276 CS |
3712 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3713 | ||
3714 | bgp_evpn = bgp_get_evpn(); | |
3715 | if (!bgp_evpn) | |
3716 | return; | |
3717 | ||
80b140af | 3718 | /* update all ipv4 routes */ |
fdf19f06 MK |
3719 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3720 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3721 | |
5fd9c12b KA |
3722 | /* update ipv4 default route and withdraw from peers */ |
3723 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3724 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3725 | SAFI_UNICAST, true); | |
3726 | ||
80b140af | 3727 | /* update all ipv6 routes */ |
fdf19f06 MK |
3728 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3729 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3730 | |
3731 | /* update ipv6 default route and withdraw from peers */ | |
3732 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3733 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3734 | SAFI_UNICAST, true); | |
3735 | ||
80b140af MK |
3736 | } |
3737 | ||
676f83b9 | 3738 | /* |
3739 | * update and advertise local routes for a VRF as type-5 routes. | |
3740 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3741 | * done in the global route table using the routes which already exist in the | |
3742 | * VRF routing table | |
3743 | */ | |
80b140af | 3744 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3745 | { |
80b140af MK |
3746 | /* skip if the RD is configured */ |
3747 | if (is_vrf_rd_configured(bgp_vrf)) | |
3748 | return; | |
3749 | ||
3750 | /* derive the RD for the VRF based on new router-id */ | |
3751 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3752 | ||
3753 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3754 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3755 | } |
3756 | ||
3757 | /* | |
3758 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3759 | * This is invoked upon VRF RD change. The processing is done only from global | |
3760 | * table. | |
3761 | */ | |
80b140af | 3762 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3763 | { |
80b140af MK |
3764 | /* skip if the RD is configured */ |
3765 | if (is_vrf_rd_configured(bgp_vrf)) | |
3766 | return; | |
3767 | ||
3768 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3769 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3770 | } |
3771 | ||
90e60aa7 | 3772 | /* |
3773 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3774 | * change. Note that the processing is done only on the global route table | |
3775 | * using routes that already exist in the per-VNI table. | |
3776 | */ | |
d62a17ae | 3777 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3778 | { | |
3779 | struct prefix_evpn p; | |
9bcb3eef | 3780 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3781 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3782 | struct attr *attr; |
3783 | afi_t afi = AFI_L2VPN; | |
3784 | safi_t safi = SAFI_EVPN; | |
3785 | ||
3786 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3787 | * attributes to create and advertise the type-3 route for this VNI | |
3788 | * in the global table. | |
fd069644 DS |
3789 | * |
3790 | * RT-3 only if doing head-end replication | |
d62a17ae | 3791 | */ |
833b8a50 AK |
3792 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3793 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3794 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3795 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3796 | if (!dest) /* unexpected */ | |
fd069644 | 3797 | return 0; |
9bcb3eef | 3798 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3799 | if (pi->peer == bgp->peer_self && |
3800 | pi->type == ZEBRA_ROUTE_BGP | |
3801 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3802 | break; | |
3803 | if (!pi) /* unexpected */ | |
3804 | return 0; | |
3805 | attr = pi->attr; | |
d62a17ae | 3806 | |
9bcb3eef DS |
3807 | global_dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3808 | (struct prefix *)&p, &vpn->prd); | |
3809 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, | |
fd069644 | 3810 | 1, &pi, 0, mac_mobility_seqnum(attr)); |
d62a17ae | 3811 | |
fd069644 | 3812 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3813 | bgp_process(bgp, global_dest, afi, safi); |
3814 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3815 | } |
d62a17ae | 3816 | |
3817 | /* Now, walk this VNI's route table and use the route and its attribute | |
3818 | * to create and schedule route in global table. | |
3819 | */ | |
9bcb3eef DS |
3820 | for (dest = bgp_table_top(vpn->route_table); dest; |
3821 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3822 | const struct prefix_evpn *evp = |
9bcb3eef | 3823 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3824 | |
3825 | /* Identify MAC-IP local routes. */ | |
3826 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3827 | continue; | |
3828 | ||
9bcb3eef | 3829 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3830 | if (pi->peer == bgp->peer_self |
3831 | && pi->type == ZEBRA_ROUTE_BGP | |
3832 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3833 | break; |
40381db7 | 3834 | if (!pi) |
d62a17ae | 3835 | continue; |
3836 | ||
3837 | /* Create route in global routing table using this route entry's | |
3838 | * attribute. | |
3839 | */ | |
40381db7 | 3840 | attr = pi->attr; |
9bcb3eef DS |
3841 | global_dest = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3842 | (struct prefix *)evp, &vpn->prd); | |
3843 | assert(global_dest); | |
3844 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, | |
3845 | 1, &global_pi, 0, | |
f07e1c99 | 3846 | mac_mobility_seqnum(attr)); |
d62a17ae | 3847 | |
3848 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3849 | bgp_process(bgp, global_dest, afi, safi); |
3850 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3851 | } |
3852 | ||
3853 | return 0; | |
90e60aa7 | 3854 | } |
3855 | ||
3856 | /* | |
3857 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3858 | * table. Invoked upon router-id change. | |
3859 | */ | |
d62a17ae | 3860 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3861 | { |
d62a17ae | 3862 | int ret; |
3863 | struct prefix_evpn p; | |
9bcb3eef | 3864 | struct bgp_dest *global_dest; |
40381db7 | 3865 | struct bgp_path_info *pi; |
d62a17ae | 3866 | afi_t afi = AFI_L2VPN; |
3867 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3868 | |
d62a17ae | 3869 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3870 | * for this VNI - from the global table. | |
3871 | */ | |
3872 | ret = delete_global_type2_routes(bgp, vpn); | |
3873 | if (ret) | |
3874 | return ret; | |
90e60aa7 | 3875 | |
d62a17ae | 3876 | /* Remove type-3 route for this VNI from global table. */ |
3877 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
9bcb3eef DS |
3878 | global_dest = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, |
3879 | (struct prefix *)&p, &vpn->prd); | |
3880 | if (global_dest) { | |
d62a17ae | 3881 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3882 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3883 | |
d62a17ae | 3884 | /* Schedule for processing - withdraws to peers happen from |
3885 | * this table. | |
3886 | */ | |
40381db7 | 3887 | if (pi) |
9bcb3eef DS |
3888 | bgp_process(bgp, global_dest, afi, safi); |
3889 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3890 | } |
90e60aa7 | 3891 | |
d62a17ae | 3892 | return 0; |
90e60aa7 | 3893 | } |
3894 | ||
2d48ee25 | 3895 | /* |
3896 | * Handle router-id change. Update and advertise local routes corresponding | |
3897 | * to this VNI from peers. Note that this is invoked after updating the | |
3898 | * router-id. The routes in the per-VNI table are used to create routes in | |
3899 | * the global table and schedule them. | |
3900 | */ | |
e3b78da8 | 3901 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3902 | { |
e3b78da8 | 3903 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3904 | |
d62a17ae | 3905 | /* Skip VNIs with configured RD. */ |
3906 | if (is_rd_configured(vpn)) | |
3907 | return; | |
2d48ee25 | 3908 | |
d62a17ae | 3909 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3910 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3911 | } |
3912 | ||
3913 | /* | |
3914 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3915 | * to this VNI from peers. Note that this is invoked prior to updating | |
3916 | * the router-id and is done only on the global route table, the routes | |
3917 | * are needed in the per-VNI table to re-advertise with new router id. | |
3918 | */ | |
e3b78da8 | 3919 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3920 | { |
e3b78da8 | 3921 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3922 | |
d62a17ae | 3923 | /* Skip VNIs with configured RD. */ |
3924 | if (is_rd_configured(vpn)) | |
3925 | return; | |
2d48ee25 | 3926 | |
d62a17ae | 3927 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3928 | } |
3929 | ||
fd069644 DS |
3930 | /* |
3931 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3932 | * This is invoked upon flooding mode changing to head-end replication. | |
3933 | */ | |
e3b78da8 | 3934 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3935 | { |
e3b78da8 | 3936 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3937 | struct bgp *bgp = data; |
3938 | struct prefix_evpn p; | |
3939 | ||
833b8a50 AK |
3940 | if (!vpn || !is_vni_live(vpn) || |
3941 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3942 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3943 | return; |
3944 | ||
3945 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3946 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3947 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3948 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3949 | } | |
3950 | ||
3951 | /* | |
3952 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3953 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3954 | */ | |
e3b78da8 | 3955 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3956 | { |
e3b78da8 | 3957 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3958 | struct bgp *bgp = data; |
3959 | struct prefix_evpn p; | |
3960 | ||
3961 | if (!vpn || !is_vni_live(vpn)) | |
3962 | return; | |
3963 | ||
3964 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3965 | delete_evpn_route(bgp, vpn, &p); | |
3966 | } | |
3967 | ||
128ea8ab | 3968 | /* |
3969 | * Process received EVPN type-2 route (advertise or withdraw). | |
3970 | */ | |
d62a17ae | 3971 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3972 | struct attr *attr, uint8_t *pfx, int psize, |
3973 | uint32_t addpath_id) | |
d62a17ae | 3974 | { |
3975 | struct prefix_rd prd; | |
3976 | struct prefix_evpn p; | |
554cd77a | 3977 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3978 | uint8_t ipaddr_len; |
3979 | uint8_t macaddr_len; | |
b57ba6d2 | 3980 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3981 | uint32_t num_labels = 0; |
554cd77a | 3982 | uint32_t eth_tag; |
d62a17ae | 3983 | int ret; |
3984 | ||
3985 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3986 | * additional 3 bytes if there is a second label (VNI): | |
3987 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3988 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3989 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3990 | */ | |
3991 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3992 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3993 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3994 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3995 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3996 | return -1; |
3997 | } | |
3998 | ||
554cd77a VB |
3999 | memset(&evpn, 0, sizeof(evpn)); |
4000 | ||
d62a17ae | 4001 | /* Make prefix_rd */ |
4002 | prd.family = AF_UNSPEC; | |
4003 | prd.prefixlen = 64; | |
4004 | memcpy(&prd.val, pfx, 8); | |
4005 | pfx += 8; | |
4006 | ||
4007 | /* Make EVPN prefix. */ | |
4008 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4009 | p.family = AF_EVPN; |
50f74cf1 | 4010 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4011 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
4012 | ||
554cd77a VB |
4013 | /* Copy Ethernet Seg Identifier */ |
4014 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
4015 | pfx += ESI_LEN; | |
d62a17ae | 4016 | |
554cd77a VB |
4017 | /* Copy Ethernet Tag */ |
4018 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4019 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4020 | pfx += 4; |
4021 | ||
4022 | /* Get the MAC Addr len */ | |
4023 | macaddr_len = *pfx++; | |
4024 | ||
4025 | /* Get the MAC Addr */ | |
28328ea9 | 4026 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 4027 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 4028 | pfx += ETH_ALEN; |
d62a17ae | 4029 | } else { |
af4c2728 | 4030 | flog_err( |
e50f7cfd | 4031 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4032 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
4033 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
4034 | return -1; | |
4035 | } | |
4036 | ||
4037 | ||
4038 | /* Get the IP. */ | |
4039 | ipaddr_len = *pfx++; | |
4040 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
4041 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 4042 | flog_err( |
e50f7cfd | 4043 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4044 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
4045 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4046 | return -1; | |
4047 | } | |
4048 | ||
4049 | if (ipaddr_len) { | |
4050 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4051 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4052 | ? IPADDR_V4 |
4053 | : IPADDR_V6; | |
3714a385 | 4054 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 4055 | } |
4056 | pfx += ipaddr_len; | |
4057 | ||
b57ba6d2 MK |
4058 | /* Get the VNI(s). Stored as bytes here. */ |
4059 | num_labels++; | |
4060 | memset(label, 0, sizeof(label)); | |
4061 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 4062 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
4063 | psize -= (33 + ipaddr_len); |
4064 | /* Do we have a second VNI? */ | |
4065 | if (psize) { | |
4066 | num_labels++; | |
4067 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4068 | /* |
4069 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4070 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
4071 | * the next field | |
6b11bd8d | 4072 | */ |
b57ba6d2 | 4073 | } |
d62a17ae | 4074 | |
4075 | /* Process the route. */ | |
4076 | if (attr) | |
4077 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4078 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4079 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 4080 | else |
4081 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4082 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4083 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 4084 | return ret; |
128ea8ab | 4085 | } |
4086 | ||
4087 | /* | |
4088 | * Process received EVPN type-3 route (advertise or withdraw). | |
4089 | */ | |
d62a17ae | 4090 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4091 | struct attr *attr, uint8_t *pfx, int psize, |
4092 | uint32_t addpath_id) | |
d62a17ae | 4093 | { |
4094 | struct prefix_rd prd; | |
4095 | struct prefix_evpn p; | |
d7c0a89a | 4096 | uint8_t ipaddr_len; |
554cd77a | 4097 | uint32_t eth_tag; |
d62a17ae | 4098 | int ret; |
4099 | ||
4100 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4101 | * IP len (1) and IP (4 or 16). | |
4102 | */ | |
4103 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4104 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4105 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4106 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4107 | return -1; |
4108 | } | |
4109 | ||
7fd077aa | 4110 | /* If PMSI is present, log if it is anything other than IR. |
4111 | * Note: We just simply ignore the values as it is not clear if | |
4112 | * doing anything else is better. | |
4113 | */ | |
4114 | if (attr && | |
4115 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
4116 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
4117 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4118 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
4119 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4120 | peer->bgp->vrf_id, peer->host, | |
4121 | attr->pmsi_tnl_type); | |
7fd077aa | 4122 | } |
4123 | } | |
4124 | ||
d62a17ae | 4125 | /* Make prefix_rd */ |
4126 | prd.family = AF_UNSPEC; | |
4127 | prd.prefixlen = 64; | |
4128 | memcpy(&prd.val, pfx, 8); | |
4129 | pfx += 8; | |
4130 | ||
4131 | /* Make EVPN prefix. */ | |
4132 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4133 | p.family = AF_EVPN; |
50f74cf1 | 4134 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4135 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4136 | ||
554cd77a VB |
4137 | /* Copy Ethernet Tag */ |
4138 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4139 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4140 | pfx += 4; |
4141 | ||
4142 | /* Get the IP. */ | |
4143 | ipaddr_len = *pfx++; | |
4144 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4145 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4146 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4147 | } else { |
af4c2728 | 4148 | flog_err( |
e50f7cfd | 4149 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4150 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4151 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4152 | return -1; | |
4153 | } | |
4154 | ||
4155 | /* Process the route. */ | |
4156 | if (attr) | |
4157 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4158 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4159 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4160 | else |
4161 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4162 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4163 | &prd, NULL, 0, NULL); |
d62a17ae | 4164 | return ret; |
128ea8ab | 4165 | } |
4166 | ||
50f74cf1 | 4167 | /* |
4168 | * Process received EVPN type-4 route (advertise or withdraw). | |
4169 | */ | |
4170 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
4171 | struct attr *attr, uint8_t *pfx, int psize, | |
4172 | uint32_t addpath_id) | |
4173 | { | |
4174 | int ret; | |
4175 | esi_t esi; | |
4176 | uint8_t ipaddr_len; | |
4177 | struct in_addr vtep_ip; | |
4178 | struct prefix_rd prd; | |
4179 | struct prefix_evpn p; | |
4180 | ||
4181 | /* Type-4 route should be either 23 or 35 bytes | |
4182 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
4183 | */ | |
4184 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 4185 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4186 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
4187 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 4188 | return -1; |
4189 | } | |
4190 | ||
4191 | /* Make prefix_rd */ | |
4192 | prd.family = AF_UNSPEC; | |
4193 | prd.prefixlen = 64; | |
4194 | memcpy(&prd.val, pfx, 8); | |
4195 | pfx += 8; | |
4196 | ||
4197 | /* get the ESI */ | |
4198 | memcpy(&esi, pfx, ESI_BYTES); | |
4199 | pfx += ESI_BYTES; | |
4200 | ||
4201 | ||
4202 | /* Get the IP. */ | |
4203 | ipaddr_len = *pfx++; | |
4204 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
4205 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
4206 | } else { | |
af4c2728 | 4207 | flog_err( |
e50f7cfd | 4208 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 4209 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
4210 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4211 | return -1; | |
4212 | } | |
4213 | ||
4214 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
4215 | /* Process the route. */ | |
4216 | if (attr) { | |
4217 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4218 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4219 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 4220 | } else { |
50f74cf1 | 4221 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4222 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4223 | &prd, NULL, 0, NULL); | |
4224 | } | |
4225 | return ret; | |
4226 | } | |
4227 | ||
4228 | ||
128ea8ab | 4229 | /* |
4230 | * Process received EVPN type-5 route (advertise or withdraw). | |
4231 | */ | |
d62a17ae | 4232 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4233 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4234 | uint32_t addpath_id) |
d62a17ae | 4235 | { |
4236 | struct prefix_rd prd; | |
4237 | struct prefix_evpn p; | |
4238 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4239 | uint8_t ippfx_len; |
4240 | uint32_t eth_tag; | |
b57ba6d2 | 4241 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4242 | int ret; |
c6ec0c74 KA |
4243 | afi_t gw_afi; |
4244 | bool is_valid_update = false; | |
d62a17ae | 4245 | |
4246 | /* Type-5 route should be 34 or 58 bytes: | |
4247 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4248 | * GW (4 or 16) and VNI (3). | |
4249 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4250 | */ | |
4251 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4252 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4253 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4254 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4255 | return -1; |
4256 | } | |
4257 | ||
4258 | /* Make prefix_rd */ | |
4259 | prd.family = AF_UNSPEC; | |
4260 | prd.prefixlen = 64; | |
4261 | memcpy(&prd.val, pfx, 8); | |
4262 | pfx += 8; | |
4263 | ||
4264 | /* Make EVPN prefix. */ | |
4265 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4266 | p.family = AF_EVPN; |
50f74cf1 | 4267 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4268 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4269 | ||
4270 | /* Additional information outside of prefix - ESI and GW IP */ | |
4271 | memset(&evpn, 0, sizeof(evpn)); | |
4272 | ||
4273 | /* Fetch ESI */ | |
4274 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
4275 | pfx += 10; | |
4276 | ||
4277 | /* Fetch Ethernet Tag. */ | |
4278 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4279 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4280 | pfx += 4; |
4281 | ||
4282 | /* Fetch IP prefix length. */ | |
4283 | ippfx_len = *pfx++; | |
4284 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4285 | flog_err( |
e50f7cfd | 4286 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4287 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4288 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4289 | return -1; | |
4290 | } | |
3714a385 | 4291 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4292 | |
4293 | /* Determine IPv4 or IPv6 prefix */ | |
4294 | /* Since the address and GW are from the same family, this just becomes | |
4295 | * a simple check on the total size. | |
4296 | */ | |
4297 | if (psize == 34) { | |
3714a385 | 4298 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4299 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4300 | pfx += 4; |
4301 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4302 | pfx += 4; | |
c6ec0c74 | 4303 | gw_afi = AF_INET; |
d62a17ae | 4304 | } else { |
3714a385 | 4305 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4306 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4307 | pfx += 16; |
4308 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4309 | pfx += 16; | |
c6ec0c74 | 4310 | gw_afi = AF_INET6; |
d62a17ae | 4311 | } |
4312 | ||
b57ba6d2 MK |
4313 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4314 | memset(&label, 0, sizeof(label)); | |
4315 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4316 | |
4317 | /* | |
4318 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4319 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4320 | * field | |
6b11bd8d | 4321 | */ |
d62a17ae | 4322 | |
c6ec0c74 KA |
4323 | if (attr) { |
4324 | is_valid_update = true; | |
4325 | if (is_zero_mac(&attr->rmac) && is_zero_esi(&evpn.eth_s_id) && | |
4326 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) | |
4327 | is_valid_update = false; | |
4328 | ||
4329 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4330 | is_valid_update = false; | |
4331 | } | |
4332 | ||
d62a17ae | 4333 | /* Process the route. */ |
c6ec0c74 | 4334 | if (is_valid_update) |
d62a17ae | 4335 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4336 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4337 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4338 | else |
4339 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4340 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4341 | &prd, &label, 1, &evpn); |
d62a17ae | 4342 | |
4343 | return ret; | |
4344 | } | |
4345 | ||
5f040085 DS |
4346 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4347 | const struct prefix_rd *prd, | |
4348 | mpls_label_t *label, uint32_t num_labels, | |
4349 | struct attr *attr) | |
d62a17ae | 4350 | { |
4351 | int len; | |
4352 | char temp[16]; | |
5f040085 | 4353 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4354 | |
4355 | memset(&temp, 0, 16); | |
b03b8898 | 4356 | if (p->family != AF_EVPN) |
d62a17ae | 4357 | return; |
4358 | p_evpn_p = &(p->u.prefix_evpn); | |
4359 | ||
e9fc2840 | 4360 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4361 | IP and GW-IP have to be both ipv4 or ipv6 |
4362 | */ | |
3714a385 | 4363 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4364 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4365 | else |
e9fc2840 | 4366 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4367 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4368 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4369 | stream_put(s, prd->val, 8); | |
0af35d90 | 4370 | if (attr) |
d62a17ae | 4371 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4372 | else | |
4373 | stream_put(s, &temp, 10); | |
3714a385 | 4374 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4375 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4376 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4377 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4378 | else |
3714a385 | 4379 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4380 | if (attr) { |
3714a385 | 4381 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4382 | stream_put_ipv4(s, |
4383 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4384 | else | |
4385 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4386 | } else { | |
3714a385 | 4387 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4388 | stream_put_ipv4(s, 0); |
4389 | else | |
4390 | stream_put(s, &temp, 16); | |
4391 | } | |
4392 | ||
b57ba6d2 | 4393 | if (num_labels) |
d62a17ae | 4394 | stream_put(s, label, 3); |
4395 | else | |
4396 | stream_put3(s, 0); | |
128ea8ab | 4397 | } |
4398 | ||
4399 | /* | |
4400 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4401 | */ | |
e3b78da8 | 4402 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4403 | { |
e3b78da8 | 4404 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4405 | |
d62a17ae | 4406 | /* Remove EVPN routes and schedule for processing. */ |
4407 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4408 | |
d62a17ae | 4409 | /* Clear "live" flag and see if hash needs to be freed. */ |
4410 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4411 | if (!is_vni_configured(vpn)) | |
4412 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4413 | } |
4414 | ||
4415 | /* | |
4416 | * Free a VNI entry; iterator function called during cleanup. | |
4417 | */ | |
e3b78da8 | 4418 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4419 | { |
e3b78da8 | 4420 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4421 | |
d62a17ae | 4422 | delete_all_vni_routes(bgp, vpn); |
4423 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4424 | } |
4425 | ||
c581d8b0 MK |
4426 | /* |
4427 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4428 | */ | |
4429 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4430 | { | |
5e53dce3 | 4431 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4432 | |
c581d8b0 | 4433 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4434 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4435 | ||
4436 | /* Map RT to VRF */ | |
5e53dce3 T |
4437 | bgp_evpn = bgp_get_evpn(); |
4438 | if (!bgp_evpn) | |
10ebe1ab MK |
4439 | return; |
4440 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4441 | } |
4442 | ||
4443 | /* | |
4444 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4445 | */ | |
4446 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4447 | { | |
4448 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4449 | } | |
4450 | ||
4451 | /* | |
4452 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4453 | */ | |
4454 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4455 | { | |
4456 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4457 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4458 | } | |
4459 | ||
4460 | /* | |
4461 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4462 | */ | |
4463 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4464 | { | |
4465 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4466 | } | |
128ea8ab | 4467 | |
f1f8b53c MK |
4468 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4469 | { | |
5e53dce3 | 4470 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4471 | struct listnode *node = NULL; |
4472 | struct bgpevpn *vpn = NULL; | |
4473 | ||
5e53dce3 T |
4474 | bgp_evpn = bgp_get_evpn(); |
4475 | if (!bgp_evpn) | |
f1f8b53c MK |
4476 | return; |
4477 | ||
4992b4ae MK |
4478 | /* update all type-5 routes */ |
4479 | update_advertise_vrf_routes(bgp_vrf); | |
4480 | ||
4481 | /* update all type-2 routes */ | |
f1f8b53c | 4482 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4483 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4484 | } |
4485 | ||
bf1061d8 VB |
4486 | /* |
4487 | * Handle autort change for a given VNI. | |
4488 | */ | |
e3b78da8 | 4489 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4490 | { |
e3b78da8 | 4491 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4492 | |
bf1061d8 VB |
4493 | if (!is_import_rt_configured(vpn)) { |
4494 | if (is_vni_live(vpn)) | |
4495 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4496 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4497 | list_delete_all_node(vpn->import_rtl); |
4498 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4499 | if (is_vni_live(vpn)) | |
4500 | bgp_evpn_install_routes(bgp, vpn); | |
4501 | } | |
4502 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4503 | list_delete_all_node(vpn->export_rtl); |
4504 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4505 | if (is_vni_live(vpn)) | |
4506 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4507 | } | |
4508 | } | |
4509 | ||
128ea8ab | 4510 | /* |
4511 | * Public functions. | |
4512 | */ | |
4513 | ||
5424b7ba | 4514 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4515 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4516 | afi_t afi, safi_t safi) |
4517 | { | |
4518 | int ret = 0; | |
4519 | struct prefix_evpn evp; | |
4520 | char buf[PREFIX_STRLEN]; | |
4521 | ||
31310b25 | 4522 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4523 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4524 | if (ret) { | |
af4c2728 | 4525 | flog_err( |
e50f7cfd | 4526 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4527 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4528 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4529 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4530 | } |
4531 | } | |
4532 | ||
342dd0c6 | 4533 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4534 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4535 | { |
4536 | struct bgp_table *table = NULL; | |
9bcb3eef | 4537 | struct bgp_dest *dest = NULL; |
40381db7 | 4538 | struct bgp_path_info *pi; |
342dd0c6 | 4539 | |
053905d2 | 4540 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4541 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4542 | /* Only care about "selected" routes. Also ensure that |
4543 | * these are routes that are injectable into EVPN. | |
4544 | */ | |
25f2ca53 | 4545 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4546 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4547 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4548 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4549 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4550 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4551 | safi); |
25f2ca53 | 4552 | break; |
4553 | } | |
4554 | } | |
4555 | } | |
5424b7ba | 4556 | } |
342dd0c6 | 4557 | |
5fd9c12b KA |
4558 | /* |
4559 | * evpn - enable advertisement of default g/w | |
4560 | */ | |
4561 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4562 | safi_t safi, bool add) | |
4563 | { | |
4564 | struct prefix ip_prefix; | |
4565 | ||
4566 | /* form the default prefix 0.0.0.0/0 */ | |
4567 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4568 | ip_prefix.family = afi2family(afi); | |
4569 | ||
4570 | if (add) { | |
4571 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4572 | NULL, afi, safi); | |
4573 | } else { | |
4574 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4575 | afi, safi); | |
4576 | } | |
4577 | } | |
4578 | ||
4579 | ||
2f69f6d3 | 4580 | /* |
4581 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4582 | * to this function correspond to those of the source IP prefix (best | |
4583 | * path in the case of the attr. In the case of a local prefix (when we | |
4584 | * are advertising local subnets), the src_attr will be NULL. | |
4585 | */ | |
bd494ec5 | 4586 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4587 | struct attr *src_attr, afi_t afi, |
4588 | safi_t safi) | |
5424b7ba MK |
4589 | { |
4590 | int ret = 0; | |
4591 | struct prefix_evpn evp; | |
4592 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4593 | |
31310b25 | 4594 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4595 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4596 | if (ret) | |
e50f7cfd | 4597 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4598 | "%u: Failed to create type-5 route for prefix %s", |
4599 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4600 | } |
4601 | ||
2f69f6d3 | 4602 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4603 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4604 | * advertisement is enabled. | |
4605 | */ | |
996c9314 LB |
4606 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4607 | safi_t safi) | |
342dd0c6 | 4608 | { |
4609 | struct bgp_table *table = NULL; | |
9bcb3eef | 4610 | struct bgp_dest *dest = NULL; |
40381db7 | 4611 | struct bgp_path_info *pi; |
342dd0c6 | 4612 | |
053905d2 | 4613 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4614 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4615 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4616 | * attribute. Also, ensure that the route is injectable |
4617 | * into EVPN. | |
2f69f6d3 | 4618 | * TODO: Support for AddPath for EVPN. |
4619 | */ | |
9bcb3eef | 4620 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4621 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4622 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4623 | |
4624 | /* apply the route-map */ | |
4625 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4626 | route_map_result_t ret; |
e34291b8 | 4627 | struct bgp_path_info tmp_pi; |
4628 | struct bgp_path_info_extra tmp_pie; | |
4629 | struct attr tmp_attr; | |
4630 | ||
4631 | tmp_attr = *pi->attr; | |
4632 | ||
4633 | /* Fill temp path_info */ | |
9bcb3eef DS |
4634 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4635 | dest, pi, pi->peer, | |
4636 | &tmp_attr); | |
e34291b8 | 4637 | |
4638 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4639 | |
996c9314 LB |
4640 | ret = route_map_apply( |
4641 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4642 | .map, | |
9bcb3eef | 4643 | bgp_dest_get_prefix(dest), |
b54892e0 | 4644 | RMAP_BGP, &tmp_pi); |
e34291b8 | 4645 | if (ret == RMAP_DENYMATCH) { |
4646 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4647 | continue; |
e34291b8 | 4648 | } |
4649 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4650 | bgp_vrf, |
9bcb3eef | 4651 | bgp_dest_get_prefix(dest), |
b54892e0 | 4652 | &tmp_attr, afi, safi); |
e34291b8 | 4653 | } else |
4654 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4655 | bgp_vrf, |
9bcb3eef | 4656 | bgp_dest_get_prefix(dest), |
b54892e0 | 4657 | pi->attr, afi, safi); |
2f69f6d3 | 4658 | break; |
4659 | } | |
4660 | } | |
31310b25 | 4661 | } |
342dd0c6 | 4662 | } |
4663 | ||
996c9314 | 4664 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4665 | { |
4666 | struct listnode *node, *nnode, *node_to_del; | |
4667 | struct ecommunity *ecom, *ecom_auto; | |
4668 | struct ecommunity_val eval; | |
4669 | ||
bf1061d8 VB |
4670 | if (bgp->advertise_autort_rfc8365) |
4671 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4672 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4673 | ||
4674 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4675 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4676 | node_to_del = NULL; |
4677 | ||
4678 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4679 | if (ecommunity_match(ecom, ecom_auto)) { | |
4680 | ecommunity_free(&ecom); | |
4681 | node_to_del = node; | |
4682 | } | |
4683 | } | |
4684 | ||
4685 | if (node_to_del) | |
4686 | list_delete_node(rtl, node_to_del); | |
4687 | ||
4688 | ecommunity_free(&ecom_auto); | |
4689 | } | |
4690 | ||
4691 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4692 | struct ecommunity *ecomadd) |
c581d8b0 | 4693 | { |
5ba238b7 | 4694 | /* uninstall routes from vrf */ |
3d0b43d7 | 4695 | if (is_l3vni_live(bgp_vrf)) |
4696 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4697 | |
4698 | /* Cleanup the RT to VRF mapping */ | |
4699 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4700 | ||
c581d8b0 MK |
4701 | /* Remove auto generated RT */ |
4702 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4703 | ||
4704 | /* Add the newly configured RT to RT list */ | |
4705 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4706 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4707 | ||
3d0b43d7 | 4708 | /* map VRF to its RTs and install routes matching the new RTs */ |
4709 | if (is_l3vni_live(bgp_vrf)) { | |
4710 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4711 | install_routes_for_vrf(bgp_vrf); | |
4712 | } | |
c581d8b0 MK |
4713 | } |
4714 | ||
4715 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4716 | struct ecommunity *ecomdel) | |
4717 | { | |
4718 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4719 | struct ecommunity *ecom = NULL; | |
4720 | ||
5ba238b7 | 4721 | /* uninstall routes from vrf */ |
3d0b43d7 | 4722 | if (is_l3vni_live(bgp_vrf)) |
4723 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4724 | |
4725 | /* Cleanup the RT to VRF mapping */ | |
4726 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4727 | ||
c581d8b0 MK |
4728 | /* remove the RT from the RT list */ |
4729 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4730 | if (ecommunity_match(ecom, ecomdel)) { | |
4731 | ecommunity_free(&ecom); | |
4732 | node_to_del = node; | |
4733 | break; | |
4734 | } | |
4735 | } | |
4736 | ||
4737 | if (node_to_del) | |
4738 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4739 | ||
b3a4db3d | 4740 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4741 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4742 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4743 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4744 | if (is_l3vni_live(bgp_vrf)) |
4745 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4746 | } |
4747 | ||
3d0b43d7 | 4748 | /* map VRFs to its RTs and install routes matching this new RT */ |
4749 | if (is_l3vni_live(bgp_vrf)) { | |
4750 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4751 | install_routes_for_vrf(bgp_vrf); | |
4752 | } | |
c581d8b0 MK |
4753 | } |
4754 | ||
4755 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4756 | struct ecommunity *ecomadd) | |
4757 | { | |
4758 | /* remove auto-generated RT */ | |
4759 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4760 | ||
4761 | /* Add the new RT to the RT list */ | |
4762 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4763 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4764 | ||
ebdc9e64 AD |
4765 | if (is_l3vni_live(bgp_vrf)) |
4766 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4767 | } |
4768 | ||
4769 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4770 | struct ecommunity *ecomdel) | |
4771 | { | |
4772 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4773 | struct ecommunity *ecom = NULL; | |
4774 | ||
4775 | /* Remove the RT from the RT list */ | |
4776 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4777 | if (ecommunity_match(ecom, ecomdel)) { | |
4778 | ecommunity_free(&ecom); | |
4779 | node_to_del = node; | |
4780 | break; | |
4781 | } | |
4782 | } | |
4783 | ||
4784 | if (node_to_del) | |
4785 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4786 | ||
1525e99f DS |
4787 | /* |
4788 | * Temporary assert to make SA happy. | |
4789 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4790 | * which means that SA is going to complain about | |
4791 | * the list_isempty call, which doesn't NULL check. | |
4792 | * So until we get this situation cleaned up, here | |
4793 | * we are. | |
4794 | */ | |
4795 | assert(bgp_vrf->vrf_export_rtl); | |
4796 | ||
c581d8b0 | 4797 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4798 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4799 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4800 | if (is_l3vni_live(bgp_vrf)) |
4801 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4802 | } |
4803 | ||
ebdc9e64 AD |
4804 | if (is_l3vni_live(bgp_vrf)) |
4805 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4806 | } |
4807 | ||
2d48ee25 | 4808 | /* |
4809 | * Handle change to BGP router id. This is invoked twice by the change | |
4810 | * handler, first before the router id has been changed and then after | |
4811 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4812 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4813 | * will result in the routes being re-advertised. |
4814 | */ | |
d62a17ae | 4815 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4816 | { |
5394a276 CS |
4817 | struct listnode *node; |
4818 | struct bgp *bgp_vrf; | |
4819 | ||
676f83b9 | 4820 | if (withdraw) { |
4821 | ||
4822 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4823 | stored in the global table for this vrf |
4824 | */ | |
80b140af | 4825 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4826 | |
4827 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4828 | * L2-VNIs |
4829 | */ | |
d62a17ae | 4830 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4831 | (void (*)(struct hash_bucket *, |
d62a17ae | 4832 | void *))withdraw_router_id_vni, |
4833 | bgp); | |
5394a276 CS |
4834 | |
4835 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4836 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4837 | if (bgp_vrf->evpn_info->advertise_pip && | |
4838 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4839 | == INADDR_ANY)) | |
4840 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4841 | = INADDR_ANY; | |
4842 | } | |
4843 | } | |
676f83b9 | 4844 | } else { |
4845 | ||
5394a276 CS |
4846 | /* Assign new default instance router-id */ |
4847 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4848 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4849 | if (bgp_vrf->evpn_info->advertise_pip && | |
4850 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4851 | == INADDR_ANY)) { | |
4852 | bgp_vrf->evpn_info->pip_ip = | |
4853 | bgp->router_id; | |
4854 | /* advertise type-5 routes with | |
4855 | * new nexthop | |
4856 | */ | |
4857 | update_advertise_vrf_routes(bgp_vrf); | |
4858 | } | |
4859 | } | |
4860 | } | |
4861 | ||
676f83b9 | 4862 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4863 | * RD |
4864 | */ | |
80b140af | 4865 | update_router_id_vrf(bgp); |
676f83b9 | 4866 | |
4867 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4868 | * new RD |
4869 | */ | |
d62a17ae | 4870 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4871 | (void (*)(struct hash_bucket *, |
d62a17ae | 4872 | void *))update_router_id_vni, |
4873 | bgp); | |
676f83b9 | 4874 | } |
2d48ee25 | 4875 | } |
4876 | ||
bf1061d8 VB |
4877 | /* |
4878 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4879 | */ | |
4880 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4881 | { | |
4882 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4883 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4884 | void*))update_autort_vni, |
4885 | bgp); | |
4886 | } | |
4887 | ||
90e60aa7 | 4888 | /* |
4889 | * Handle change to export RT - update and advertise local routes. | |
4890 | */ | |
d62a17ae | 4891 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4892 | { |
d62a17ae | 4893 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4894 | } |
4895 | ||
996c9314 | 4896 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4897 | { |
4898 | if (withdraw) | |
4899 | delete_withdraw_vrf_routes(bgp_vrf); | |
4900 | else | |
4901 | update_advertise_vrf_routes(bgp_vrf); | |
4902 | } | |
4903 | ||
90e60aa7 | 4904 | /* |
4905 | * Handle change to RD. This is invoked twice by the change handler, | |
4906 | * first before the RD has been changed and then after the RD has | |
4907 | * been changed. The first invocation will result in local routes | |
4908 | * of this VNI being deleted and withdrawn and the next will result | |
4909 | * in the routes being re-advertised. | |
4910 | */ | |
d62a17ae | 4911 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4912 | int withdraw) | |
90e60aa7 | 4913 | { |
d62a17ae | 4914 | if (withdraw) |
4915 | delete_withdraw_vni_routes(bgp, vpn); | |
4916 | else | |
4917 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4918 | } |
4919 | ||
4920 | /* | |
4921 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4922 | */ | |
d62a17ae | 4923 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4924 | { |
d62a17ae | 4925 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4926 | } |
4927 | ||
4928 | /* | |
4929 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4930 | * to Import RT. | |
4931 | */ | |
d62a17ae | 4932 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4933 | { |
d62a17ae | 4934 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4935 | } |
4936 | ||
b16031a2 | 4937 | /* |
b57ba6d2 | 4938 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4939 | */ |
d7c0a89a | 4940 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4941 | int len) |
b16031a2 | 4942 | { |
b57ba6d2 | 4943 | vni_t vni1, vni2; |
b16031a2 | 4944 | |
b57ba6d2 MK |
4945 | vni1 = label2vni(label); |
4946 | if (num_labels == 2) { | |
996c9314 | 4947 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4948 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4949 | } else | |
4950 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4951 | return buf; |
b16031a2 | 4952 | } |
4953 | ||
9c92b5f7 MK |
4954 | /* |
4955 | * Function to convert evpn route to json format. | |
4956 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4957 | */ | |
bd494ec5 | 4958 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4959 | { |
b682f6de | 4960 | char buf1[ETHER_ADDR_STRLEN]; |
4961 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4962 | uint8_t family; |
4963 | uint8_t prefixlen; | |
9c92b5f7 | 4964 | |
b682f6de | 4965 | if (!json) |
4966 | return; | |
9c92b5f7 | 4967 | |
44c69747 LK |
4968 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4969 | ||
4970 | switch (p->prefix.route_type) { | |
4971 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4972 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4973 | p->prefix.macip_addr.eth_tag); |
4974 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4975 | json_object_string_add(json, "mac", | |
4976 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4977 | sizeof(buf1))); | |
4978 | ||
4979 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4980 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4981 | AF_INET6; | |
4982 | prefixlen = (family == AF_INET) ? | |
4983 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4984 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4985 | buf2, PREFIX2STR_BUFFER); | |
4986 | json_object_int_add(json, "ipLen", prefixlen); | |
4987 | json_object_string_add(json, "ip", buf2); | |
4988 | } | |
4989 | break; | |
dff8f48d | 4990 | |
44c69747 LK |
4991 | case BGP_EVPN_IMET_ROUTE: |
4992 | json_object_int_add(json, "ethTag", | |
4993 | p->prefix.imet_addr.eth_tag); | |
4994 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4995 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4996 | IPV6_MAX_BITLEN; | |
4997 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4998 | PREFIX2STR_BUFFER); | |
4999 | json_object_int_add(json, "ipLen", prefixlen); | |
5000 | json_object_string_add(json, "ip", buf2); | |
5001 | break; | |
dff8f48d | 5002 | |
44c69747 LK |
5003 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5004 | json_object_int_add(json, "ethTag", | |
5005 | p->prefix.prefix_addr.eth_tag); | |
5006 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5007 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
5008 | buf2, sizeof(buf2)); | |
5009 | json_object_int_add(json, "ipLen", | |
5010 | p->prefix.prefix_addr.ip_prefix_length); | |
5011 | json_object_string_add(json, "ip", buf2); | |
5012 | break; | |
5013 | ||
5014 | default: | |
5015 | break; | |
dff8f48d | 5016 | } |
9c92b5f7 MK |
5017 | } |
5018 | ||
520d5d76 | 5019 | /* |
5020 | * Function to convert evpn route to string. | |
5021 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
5022 | */ | |
bd494ec5 | 5023 | char *bgp_evpn_route2str(const struct prefix_evpn *p, char *buf, int len) |
d62a17ae | 5024 | { |
5025 | char buf1[ETHER_ADDR_STRLEN]; | |
5026 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 5027 | char buf3[ESI_STR_LEN]; |
d62a17ae | 5028 | |
5029 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 5030 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 5031 | p->prefix.imet_addr.eth_tag, |
5032 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 5033 | : IPV6_MAX_BITLEN, |
3714a385 | 5034 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 5035 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 5036 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
5037 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
5038 | p->prefix.route_type, | |
3714a385 | 5039 | p->prefix.macip_addr.eth_tag, |
554cd77a | 5040 | 8 * ETH_ALEN, |
3714a385 | 5041 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 5042 | sizeof(buf1))); |
5043 | else { | |
d7c0a89a | 5044 | uint8_t family; |
d62a17ae | 5045 | |
3714a385 | 5046 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 5047 | : AF_INET6; |
554cd77a VB |
5048 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
5049 | p->prefix.route_type, | |
3714a385 | 5050 | p->prefix.macip_addr.eth_tag, |
554cd77a | 5051 | 8 * ETH_ALEN, |
3714a385 | 5052 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 5053 | sizeof(buf1)), |
5054 | family == AF_INET ? IPV4_MAX_BITLEN | |
5055 | : IPV6_MAX_BITLEN, | |
3714a385 | 5056 | inet_ntop(family, |
5057 | &p->prefix.macip_addr.ip.ip.addr, | |
5058 | buf2, | |
d62a17ae | 5059 | PREFIX2STR_BUFFER)); |
5060 | } | |
342dd0c6 | 5061 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
5062 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
5063 | p->prefix.route_type, | |
3714a385 | 5064 | p->prefix.prefix_addr.eth_tag, |
5065 | p->prefix.prefix_addr.ip_prefix_length, | |
5066 | is_evpn_prefix_ipaddr_v4(p) | |
5067 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
5068 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 5069 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
5070 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
5071 | p->prefix.route_type, | |
5072 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
5073 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
5074 | : IPV6_MAX_BITLEN, | |
5075 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 5076 | } else { |
b03b8898 | 5077 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
5078 | snprintf(buf, len, "(unsupported route type %d)", |
5079 | p->prefix.route_type); | |
d62a17ae | 5080 | } |
5081 | ||
5082 | return (buf); | |
520d5d76 | 5083 | } |
5084 | ||
128ea8ab | 5085 | /* |
5086 | * Encode EVPN prefix in Update (MP_REACH) | |
5087 | */ | |
5f040085 DS |
5088 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5089 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
5090 | uint32_t num_labels, struct attr *attr, |
5091 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 5092 | { |
5093 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5094 | int len, ipa_len = 0; |
d62a17ae | 5095 | |
5096 | if (addpath_encode) | |
5097 | stream_putl(s, addpath_tx_id); | |
5098 | ||
5099 | /* Route type */ | |
5100 | stream_putc(s, evp->prefix.route_type); | |
5101 | ||
5102 | switch (evp->prefix.route_type) { | |
5103 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5104 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5105 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5106 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5107 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5108 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5109 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5110 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5111 | len += 3; | |
5112 | stream_putc(s, len); | |
996c9314 | 5113 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
5114 | if (attr) |
5115 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
5116 | else | |
5117 | stream_put(s, 0, 10); | |
3714a385 | 5118 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5119 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5120 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5121 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5122 | if (ipa_len) /* IP */ | |
5123 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5124 | ipa_len); | |
b57ba6d2 MK |
5125 | /* 1st label is the L2 VNI */ |
5126 | stream_put(s, label, BGP_LABEL_BYTES); | |
5127 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5128 | if (ipa_len && num_labels > 1) | |
996c9314 | 5129 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5130 | break; |
5131 | ||
5132 | case BGP_EVPN_IMET_ROUTE: | |
5133 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5134 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5135 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5136 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5137 | /* Originating Router's IP Addr */ | |
3714a385 | 5138 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5139 | break; |
5140 | ||
50f74cf1 | 5141 | case BGP_EVPN_ES_ROUTE: |
5142 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5143 | stream_put(s, prd->val, 8); /* RD */ | |
5144 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5145 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5146 | /* VTEP IP */ |
5147 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5148 | break; |
5149 | ||
d62a17ae | 5150 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5151 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5152 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5153 | break; |
5154 | ||
5155 | default: | |
5156 | break; | |
5157 | } | |
5158 | } | |
5159 | ||
5160 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5161 | struct bgp_nlri *packet, int withdraw) | |
5162 | { | |
d7c0a89a QY |
5163 | uint8_t *pnt; |
5164 | uint8_t *lim; | |
d62a17ae | 5165 | afi_t afi; |
5166 | safi_t safi; | |
d7c0a89a | 5167 | uint32_t addpath_id; |
d62a17ae | 5168 | int addpath_encoded; |
5169 | int psize = 0; | |
d7c0a89a | 5170 | uint8_t rtype; |
d62a17ae | 5171 | struct prefix p; |
5172 | ||
d62a17ae | 5173 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5174 | pnt = packet->nlri; | |
5175 | lim = pnt + packet->length; | |
5176 | afi = packet->afi; | |
5177 | safi = packet->safi; | |
5178 | addpath_id = 0; | |
5179 | ||
5180 | addpath_encoded = | |
5181 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
5182 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
5183 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
5184 | ||
5185 | for (; pnt < lim; pnt += psize) { | |
5186 | /* Clear prefix structure. */ | |
5187 | memset(&p, 0, sizeof(struct prefix)); | |
5188 | ||
5189 | /* Deal with path-id if AddPath is supported. */ | |
5190 | if (addpath_encoded) { | |
5191 | /* When packet overflow occurs return immediately. */ | |
5192 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5193 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5194 | |
a3a850a1 S |
5195 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5196 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5197 | pnt += BGP_ADDPATH_ID_LEN; |
5198 | } | |
5199 | ||
5200 | /* All EVPN NLRI types start with type and length. */ | |
5201 | if (pnt + 2 > lim) | |
513386b5 | 5202 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5203 | |
5204 | rtype = *pnt++; | |
3f54c705 | 5205 | psize = *pnt++; |
d62a17ae | 5206 | |
5207 | /* When packet overflow occur return immediately. */ | |
5208 | if (pnt + psize > lim) | |
513386b5 | 5209 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5210 | |
5211 | switch (rtype) { | |
5212 | case BGP_EVPN_MAC_IP_ROUTE: | |
5213 | if (process_type2_route(peer, afi, safi, | |
5214 | withdraw ? NULL : attr, pnt, | |
5215 | psize, addpath_id)) { | |
af4c2728 | 5216 | flog_err( |
e50f7cfd | 5217 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5218 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5219 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5220 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5221 | } |
5222 | break; | |
5223 | ||
5224 | case BGP_EVPN_IMET_ROUTE: | |
5225 | if (process_type3_route(peer, afi, safi, | |
5226 | withdraw ? NULL : attr, pnt, | |
5227 | psize, addpath_id)) { | |
af4c2728 | 5228 | flog_err( |
e50f7cfd | 5229 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5230 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5231 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5232 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5233 | } |
5234 | break; | |
5235 | ||
50f74cf1 | 5236 | case BGP_EVPN_ES_ROUTE: |
5237 | if (process_type4_route(peer, afi, safi, | |
5238 | withdraw ? NULL : attr, pnt, | |
5239 | psize, addpath_id)) { | |
af4c2728 | 5240 | flog_err( |
e50f7cfd | 5241 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5242 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5243 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5244 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5245 | } |
5246 | break; | |
5247 | ||
d62a17ae | 5248 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5249 | if (process_type5_route(peer, afi, safi, |
5250 | withdraw ? NULL : attr, pnt, | |
5251 | psize, addpath_id)) { | |
af4c2728 | 5252 | flog_err( |
e50f7cfd | 5253 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5254 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5255 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5256 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5257 | } |
5258 | break; | |
5259 | ||
5260 | default: | |
5261 | break; | |
5262 | } | |
5263 | } | |
5264 | ||
5265 | /* Packet length consistency check. */ | |
5266 | if (pnt != lim) | |
513386b5 | 5267 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5268 | |
513386b5 | 5269 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5270 | } |
5271 | ||
10ebe1ab MK |
5272 | /* |
5273 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5274 | * The mapping will be used during route processing. | |
5275 | * bgp_def: default bgp instance | |
5276 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5277 | */ | |
5278 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5279 | { | |
5280 | int i = 0; | |
5281 | struct ecommunity_val *eval = NULL; | |
5282 | struct listnode *node = NULL, *nnode = NULL; | |
5283 | struct ecommunity *ecom = NULL; | |
5284 | ||
5285 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5286 | for (i = 0; i < ecom->size; i++) { | |
5287 | eval = (struct ecommunity_val *)(ecom->val | |
5288 | + (i | |
5289 | * ECOMMUNITY_SIZE)); | |
5290 | map_vrf_to_rt(bgp_vrf, eval); | |
5291 | } | |
5292 | } | |
5293 | } | |
5294 | ||
5295 | /* | |
5296 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5297 | */ | |
5298 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5299 | { | |
5300 | int i; | |
5301 | struct ecommunity_val *eval; | |
5302 | struct listnode *node, *nnode; | |
5303 | struct ecommunity *ecom; | |
5304 | ||
5305 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5306 | for (i = 0; i < ecom->size; i++) { | |
5307 | struct vrf_irt_node *irt; | |
5308 | struct ecommunity_val eval_tmp; | |
5309 | ||
5310 | eval = (struct ecommunity_val *)(ecom->val | |
5311 | + (i | |
5312 | * ECOMMUNITY_SIZE)); | |
5313 | /* If using "automatic" RT, we only care about the | |
5314 | * local-admin sub-field. | |
5315 | * This is to facilitate using VNI as the RT for EBGP | |
5316 | * peering too. | |
5317 | */ | |
5318 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5319 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5320 | BGP_VRF_IMPORT_RT_CFGD)) | |
5321 | mask_ecom_global_admin(&eval_tmp, eval); | |
5322 | ||
5323 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5324 | if (irt) | |
5325 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5326 | } | |
5327 | } | |
5328 | } | |
5329 | ||
5330 | ||
128ea8ab | 5331 | /* |
5332 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5333 | * The mapping will be used during route processing. | |
5334 | */ | |
d62a17ae | 5335 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5336 | { |
d62a17ae | 5337 | int i; |
5338 | struct ecommunity_val *eval; | |
5339 | struct listnode *node, *nnode; | |
5340 | struct ecommunity *ecom; | |
128ea8ab | 5341 | |
d62a17ae | 5342 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5343 | for (i = 0; i < ecom->size; i++) { | |
5344 | eval = (struct ecommunity_val *)(ecom->val | |
5345 | + (i | |
5346 | * ECOMMUNITY_SIZE)); | |
5347 | map_vni_to_rt(bgp, vpn, eval); | |
5348 | } | |
5349 | } | |
128ea8ab | 5350 | } |
5351 | ||
5352 | /* | |
5353 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5354 | */ | |
d62a17ae | 5355 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5356 | { |
d62a17ae | 5357 | int i; |
5358 | struct ecommunity_val *eval; | |
5359 | struct listnode *node, *nnode; | |
5360 | struct ecommunity *ecom; | |
128ea8ab | 5361 | |
d62a17ae | 5362 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5363 | for (i = 0; i < ecom->size; i++) { | |
5364 | struct irt_node *irt; | |
5365 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5366 | |
d62a17ae | 5367 | eval = (struct ecommunity_val *)(ecom->val |
5368 | + (i | |
5369 | * ECOMMUNITY_SIZE)); | |
5370 | /* If using "automatic" RT, we only care about the | |
5371 | * local-admin sub-field. | |
5372 | * This is to facilitate using VNI as the RT for EBGP | |
5373 | * peering too. | |
5374 | */ | |
5375 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5376 | if (!is_import_rt_configured(vpn)) | |
5377 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5378 | |
d62a17ae | 5379 | irt = lookup_import_rt(bgp, &eval_tmp); |
5380 | if (irt) | |
5381 | unmap_vni_from_rt(bgp, vpn, irt); | |
5382 | } | |
5383 | } | |
128ea8ab | 5384 | } |
5385 | ||
5386 | /* | |
5387 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5388 | * The mapping will be used during route processing. | |
5389 | */ | |
d62a17ae | 5390 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5391 | { |
c581d8b0 | 5392 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5393 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5394 | |
d62a17ae | 5395 | /* Map RT to VNI */ |
5396 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5397 | } |
5398 | ||
5399 | /* | |
5400 | * Derive Export RT automatically for VNI. | |
5401 | */ | |
d62a17ae | 5402 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5403 | { |
c581d8b0 | 5404 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5405 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5406 | } |
5407 | ||
676f83b9 | 5408 | /* |
5409 | * Derive RD automatically for VNI using passed information - it | |
5410 | * is of the form RouterId:unique-id-for-vni. | |
5411 | */ | |
5412 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5413 | { | |
9e97ff03 CS |
5414 | if (is_vrf_rd_configured(bgp)) |
5415 | return; | |
5416 | ||
92708db6 | 5417 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5418 | } |
5419 | ||
128ea8ab | 5420 | /* |
5421 | * Derive RD automatically for VNI using passed information - it | |
5422 | * is of the form RouterId:unique-id-for-vni. | |
5423 | */ | |
d62a17ae | 5424 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5425 | { |
d62a17ae | 5426 | char buf[100]; |
128ea8ab | 5427 | |
d62a17ae | 5428 | vpn->prd.family = AF_UNSPEC; |
5429 | vpn->prd.prefixlen = 64; | |
772270f3 QY |
5430 | snprintf(buf, sizeof(buf), "%s:%hu", inet_ntoa(bgp->router_id), |
5431 | vpn->rd_id); | |
cbb65f5e | 5432 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5433 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5434 | } |
5435 | ||
7df407ed CS |
5436 | /* |
5437 | * Lookup L3-VNI | |
5438 | */ | |
5439 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5440 | { | |
5441 | struct list *inst = bm->bgp; | |
5442 | struct listnode *node; | |
5443 | struct bgp *bgp_vrf; | |
5444 | ||
5445 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5446 | if (bgp_vrf->l3vni == vni) | |
5447 | return true; | |
5448 | } | |
5449 | ||
5450 | return false; | |
5451 | } | |
5452 | ||
128ea8ab | 5453 | /* |
5454 | * Lookup VNI. | |
5455 | */ | |
d62a17ae | 5456 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5457 | { |
d62a17ae | 5458 | struct bgpevpn *vpn; |
5459 | struct bgpevpn tmp; | |
128ea8ab | 5460 | |
d62a17ae | 5461 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5462 | tmp.vni = vni; | |
5463 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5464 | return vpn; | |
128ea8ab | 5465 | } |
5466 | ||
5467 | /* | |
5468 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5469 | */ | |
d62a17ae | 5470 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5471 | struct in_addr originator_ip, |
5472 | vrf_id_t tenant_vrf_id, | |
5473 | struct in_addr mcast_grp) | |
128ea8ab | 5474 | { |
d62a17ae | 5475 | struct bgpevpn *vpn; |
128ea8ab | 5476 | |
d62a17ae | 5477 | if (!bgp) |
5478 | return NULL; | |
128ea8ab | 5479 | |
d62a17ae | 5480 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5481 | |
d62a17ae | 5482 | /* Set values - RD and RT set to defaults. */ |
5483 | vpn->vni = vni; | |
5484 | vpn->originator_ip = originator_ip; | |
29c53922 | 5485 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5486 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5487 | |
d62a17ae | 5488 | /* Initialize route-target import and export lists */ |
5489 | vpn->import_rtl = list_new(); | |
5490 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5491 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5492 | vpn->export_rtl = list_new(); |
5493 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5494 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5495 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5496 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5497 | |
d62a17ae | 5498 | /* Initialize EVPN route table. */ |
960035b2 | 5499 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5500 | |
d62a17ae | 5501 | /* Add to hash */ |
5502 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5503 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5504 | return NULL; | |
5505 | } | |
6a8657d0 MK |
5506 | |
5507 | /* add to l2vni list on corresponding vrf */ | |
5508 | bgpevpn_link_to_l3vni(vpn); | |
5509 | ||
d62a17ae | 5510 | QOBJ_REG(vpn, bgpevpn); |
5511 | return vpn; | |
128ea8ab | 5512 | } |
5513 | ||
5514 | /* | |
5515 | * Free a given VPN - called in multiple scenarios such as zebra | |
5516 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5517 | * This just frees appropriate memory, caller should have taken other | |
5518 | * needed actions. | |
5519 | */ | |
d62a17ae | 5520 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5521 | { |
6a8657d0 | 5522 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5523 | bgp_table_unlock(vpn->route_table); |
5524 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5525 | list_delete(&vpn->import_rtl); |
5526 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5527 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5528 | hash_release(bgp->vnihash, vpn); |
5529 | QOBJ_UNREG(vpn); | |
5530 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5531 | } |
5532 | ||
5533 | /* | |
50f74cf1 | 5534 | * Lookup local ES. |
5535 | */ | |
5536 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5537 | { | |
5538 | struct evpnes *es; | |
5539 | struct evpnes tmp; | |
5540 | ||
5541 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5542 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5543 | es = hash_lookup(bgp->esihash, &tmp); | |
5544 | return es; | |
5545 | } | |
5546 | ||
5547 | /* | |
5548 | * Create a new local es - invoked upon zebra notification. | |
5549 | */ | |
5550 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5551 | esi_t *esi, | |
5552 | struct ipaddr *originator_ip) | |
5553 | { | |
5554 | char buf[100]; | |
5555 | struct evpnes *es; | |
5556 | ||
5557 | if (!bgp) | |
5558 | return NULL; | |
5559 | ||
5560 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5561 | |
5562 | /* set the ESI and originator_ip */ | |
5563 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5564 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5565 | ||
5566 | /* Initialise the VTEP list */ | |
5567 | es->vtep_list = list_new(); | |
ce167790 | 5568 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5569 | |
5570 | /* auto derive RD for this es */ | |
5571 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5572 | es->prd.family = AF_UNSPEC; | |
5573 | es->prd.prefixlen = 64; | |
772270f3 QY |
5574 | snprintf(buf, sizeof(buf), "%s:%hu", inet_ntoa(bgp->router_id), |
5575 | es->rd_id); | |
50f74cf1 | 5576 | (void)str2prefix_rd(buf, &es->prd); |
5577 | ||
5578 | /* Initialize the ES route table */ | |
5579 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5580 | ||
5581 | /* Add to hash */ | |
5582 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5583 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5584 | return NULL; | |
5585 | } | |
5586 | ||
5587 | QOBJ_REG(es, evpnes); | |
5588 | return es; | |
5589 | } | |
5590 | ||
5591 | /* | |
5592 | * Free a given ES - | |
5593 | * This just frees appropriate memory, caller should have taken other | |
5594 | * needed actions. | |
5595 | */ | |
5596 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5597 | { | |
6a154c88 | 5598 | list_delete(&es->vtep_list); |
50f74cf1 | 5599 | bgp_table_unlock(es->route_table); |
5600 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5601 | hash_release(bgp->esihash, es); | |
5602 | QOBJ_UNREG(es); | |
5603 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5604 | } | |
5605 | ||
5606 | /* | |
5607 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5608 | */ |
d62a17ae | 5609 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5610 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5611 | { |
40381db7 | 5612 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5613 | } |
5614 | ||
5615 | /* | |
50f74cf1 | 5616 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5617 | */ |
d62a17ae | 5618 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5619 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5620 | { |
40381db7 | 5621 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5622 | } |
5623 | ||
db0e1937 MK |
5624 | /* filter routes which have martian next hops */ |
5625 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5626 | { | |
0291c246 MK |
5627 | afi_t afi; |
5628 | safi_t safi; | |
9bcb3eef | 5629 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5630 | struct bgp_table *table; |
40381db7 | 5631 | struct bgp_path_info *pi; |
db0e1937 MK |
5632 | |
5633 | afi = AFI_L2VPN; | |
5634 | safi = SAFI_EVPN; | |
5635 | ||
5636 | /* Walk entire global routing table and evaluate routes which could be | |
5637 | * imported into this VPN. Note that we cannot just look at the routes | |
5638 | * for the VNI's RD - | |
5639 | * remote routes applicable for this VNI could have any RD. | |
5640 | */ | |
5641 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5642 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5643 | rd_dest = bgp_route_next(rd_dest)) { | |
5644 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5645 | if (!table) |
5646 | continue; | |
5647 | ||
9bcb3eef DS |
5648 | for (dest = bgp_table_top(table); dest; |
5649 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5650 | |
9bcb3eef | 5651 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5652 | pi = pi->next) { |
db0e1937 MK |
5653 | |
5654 | /* Consider "valid" remote routes applicable for | |
5655 | * this VNI. */ | |
40381db7 DS |
5656 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5657 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5658 | continue; |
9bcb3eef DS |
5659 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5660 | pi->sub_type, pi->attr, | |
5661 | dest)) { | |
b54892e0 | 5662 | const struct prefix *p = |
9bcb3eef | 5663 | bgp_dest_get_prefix(dest); |
db0e1937 | 5664 | |
b54892e0 DS |
5665 | if (bgp_debug_update(pi->peer, p, NULL, |
5666 | 1)) { | |
5667 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5668 | |
b54892e0 DS |
5669 | bgp_dump_attr(pi->attr, |
5670 | attr_str, BUFSIZ); | |
db0e1937 | 5671 | |
db0e1937 | 5672 | zlog_debug( |
b54892e0 | 5673 | "%u: prefix %pRN with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5674 | bgp->vrf_id, dest, |
db0e1937 | 5675 | attr_str); |
b54892e0 | 5676 | } |
db0e1937 | 5677 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5678 | p, pi); |
db0e1937 | 5679 | |
9bcb3eef | 5680 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5681 | safi); |
db0e1937 | 5682 | } |
db0e1937 MK |
5683 | } |
5684 | } | |
5685 | } | |
5686 | ||
5687 | return 0; | |
5688 | } | |
5689 | ||
128ea8ab | 5690 | /* |
5691 | * Handle del of a local MACIP. | |
5692 | */ | |
d62a17ae | 5693 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5694 | struct ipaddr *ip, int state) |
128ea8ab | 5695 | { |
d62a17ae | 5696 | struct bgpevpn *vpn; |
5697 | struct prefix_evpn p; | |
9bcb3eef | 5698 | struct bgp_dest *dest; |
128ea8ab | 5699 | |
d62a17ae | 5700 | /* Lookup VNI hash - should exist. */ |
5701 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5702 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5703 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5704 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5705 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5706 | return -1; | |
5707 | } | |
128ea8ab | 5708 | |
d62a17ae | 5709 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5710 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5711 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5712 | delete_evpn_route(bgp, vpn, &p); | |
5713 | } else { | |
5714 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5715 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5716 | if (dest) | |
5717 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5718 | } |
128ea8ab | 5719 | |
d62a17ae | 5720 | return 0; |
128ea8ab | 5721 | } |
5722 | ||
5723 | /* | |
5724 | * Handle add of a local MACIP. | |
5725 | */ | |
d62a17ae | 5726 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5727 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5728 | { |
d62a17ae | 5729 | struct bgpevpn *vpn; |
5730 | struct prefix_evpn p; | |
128ea8ab | 5731 | |
d62a17ae | 5732 | /* Lookup VNI hash - should exist. */ |
5733 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5734 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5735 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5736 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5737 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5738 | return -1; | |
5739 | } | |
128ea8ab | 5740 | |
d62a17ae | 5741 | /* Create EVPN type-2 route and schedule for processing. */ |
5742 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5743 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5744 | char buf[ETHER_ADDR_STRLEN]; |
5745 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5746 | |
af4c2728 | 5747 | flog_err( |
e50f7cfd | 5748 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5749 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5750 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5751 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5752 | ? "sticky gateway" | |
5753 | : "", | |
d62a17ae | 5754 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5755 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5756 | return -1; |
5757 | } | |
128ea8ab | 5758 | |
d62a17ae | 5759 | return 0; |
128ea8ab | 5760 | } |
5761 | ||
e3b78da8 | 5762 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5763 | struct bgp *bgp_vrf) |
5764 | { | |
e3b78da8 | 5765 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5766 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5767 | |
5e53dce3 T |
5768 | bgp_evpn = bgp_get_evpn(); |
5769 | assert(bgp_evpn); | |
6a8657d0 | 5770 | |
6a8657d0 MK |
5771 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5772 | bgpevpn_link_to_l3vni(vpn); | |
5773 | } | |
5774 | ||
14e814ea CS |
5775 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5776 | struct ethaddr *svi_rmac, | |
5777 | struct ethaddr *vrr_rmac, | |
0483af6e | 5778 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5779 | ifindex_t svi_ifindex, |
5780 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5781 | { |
5782 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5783 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5784 | struct listnode *node = NULL; |
5785 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5786 | as_t as = 0; |
5787 | ||
3621ebc5 | 5788 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5789 | * auto-creatio |
5790 | */ | |
5e53dce3 T |
5791 | bgp_evpn = bgp_get_evpn(); |
5792 | if (!bgp_evpn) { | |
af4c2728 | 5793 | flog_err( |
e50f7cfd | 5794 | EC_BGP_NO_DFLT, |
3621ebc5 | 5795 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5796 | l3vni); |
fe1dc5a3 MK |
5797 | return -1; |
5798 | } | |
5e53dce3 | 5799 | as = bgp_evpn->as; |
fe1dc5a3 | 5800 | |
0437e105 | 5801 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5802 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5803 | if (!bgp_vrf) { |
5804 | ||
5805 | int ret = 0; | |
5806 | ||
5d5393b9 DL |
5807 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5808 | vrf_id == VRF_DEFAULT | |
5809 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5810 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5811 | switch (ret) { |
fe1dc5a3 | 5812 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5813 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5814 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5815 | return -1; |
5816 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5817 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5818 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5819 | return -1; |
5820 | } | |
5821 | ||
5822 | /* mark as auto created */ | |
5823 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5824 | } | |
5825 | ||
0483af6e | 5826 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5827 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5828 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5829 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5830 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5831 | |
14e814ea CS |
5832 | /* copy anycast MAC from VRR MAC */ |
5833 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5834 | /* copy sys RMAC from SVI MAC */ | |
5835 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5836 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5837 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5838 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5839 | ||
5840 | if (bgp_debug_zebra(NULL)) { | |
5841 | char buf[ETHER_ADDR_STRLEN]; | |
5842 | char buf1[ETHER_ADDR_STRLEN]; | |
5843 | char buf2[ETHER_ADDR_STRLEN]; | |
5844 | ||
5845 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5846 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5847 | bgp_vrf->l3vni, | |
5848 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5849 | : "disable", | |
5850 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5851 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5852 | buf1, sizeof(buf1)), | |
5853 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5854 | buf2, sizeof(buf2)), | |
5855 | is_anycast_mac ? "Enable" : "Disable"); | |
5856 | } | |
c48d9f5f | 5857 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5858 | if (filter) { |
c48d9f5f MK |
5859 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5860 | ||
10f70510 AD |
5861 | /* |
5862 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5863 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5864 | * that explicitly. | |
5865 | */ | |
5866 | } else { | |
5867 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5868 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5869 | ||
5870 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5871 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5872 | ||
5873 | /* | |
5874 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5875 | * flag, update all MACIP routes in this VNI | |
5876 | */ | |
5877 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5878 | update_all_type2_routes(bgp_evpn, vpn); | |
5879 | } | |
5880 | } | |
5881 | } | |
5882 | ||
530e8a6e | 5883 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5884 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5885 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5886 | else |
5887 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5888 | ||
c581d8b0 MK |
5889 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5890 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5891 | |
5892 | /* auto derive RD */ | |
676f83b9 | 5893 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5894 | |
6a8657d0 | 5895 | /* link all corresponding l2vnis */ |
5e53dce3 | 5896 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5897 | (void (*)(struct hash_bucket *, |
996c9314 | 5898 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5899 | bgp_vrf); |
5900 | ||
c48d9f5f MK |
5901 | /* Only update all corresponding type-2 routes if we are advertising two |
5902 | * labels along with type-2 routes | |
5903 | */ | |
5904 | if (!filter) | |
5905 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5906 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5907 | |
06d2e8f3 MK |
5908 | /* advertise type-5 routes if needed */ |
5909 | update_advertise_vrf_routes(bgp_vrf); | |
5910 | ||
5ba238b7 MK |
5911 | /* install all remote routes belonging to this l3vni into correspondng |
5912 | * vrf */ | |
5913 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5914 | |
5915 | return 0; | |
5916 | } | |
5917 | ||
996c9314 | 5918 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5919 | { |
5920 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5921 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5922 | struct listnode *node = NULL; |
18abc1eb | 5923 | struct listnode *next = NULL; |
f1f8b53c | 5924 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5925 | |
5926 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5927 | if (!bgp_vrf) { | |
af4c2728 | 5928 | flog_err( |
e50f7cfd | 5929 | EC_BGP_NO_DFLT, |
996c9314 LB |
5930 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5931 | l3vni); | |
fe1dc5a3 MK |
5932 | return -1; |
5933 | } | |
5934 | ||
5e53dce3 T |
5935 | bgp_evpn = bgp_get_evpn(); |
5936 | if (!bgp_evpn) { | |
af4c2728 | 5937 | flog_err( |
e50f7cfd | 5938 | EC_BGP_NO_DFLT, |
3621ebc5 | 5939 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5940 | l3vni); |
f1f8b53c MK |
5941 | return -1; |
5942 | } | |
5943 | ||
d846168d | 5944 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5945 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5946 | * routes. This will uninstalling the routes from zebra and decremnt the |
5947 | * bgp info count. | |
523cafc4 | 5948 | */ |
d846168d | 5949 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5950 | |
06d2e8f3 MK |
5951 | /* delete/withdraw all type-5 routes */ |
5952 | delete_withdraw_vrf_routes(bgp_vrf); | |
5953 | ||
fe1dc5a3 MK |
5954 | /* remove the l3vni from vrf instance */ |
5955 | bgp_vrf->l3vni = 0; | |
5956 | ||
5957 | /* remove the Rmac from the BGP vrf */ | |
5958 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5959 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5960 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5961 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5962 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5963 | |
530e8a6e | 5964 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5965 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5966 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5967 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5968 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5969 | } |
530e8a6e CS |
5970 | |
5971 | /* remove default export RT */ | |
5972 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5973 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5974 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5975 | } |
fe1dc5a3 | 5976 | |
f1f8b53c | 5977 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5978 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5979 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5980 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5981 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5982 | } |
5983 | } | |
fe1dc5a3 | 5984 | |
18abc1eb | 5985 | /* If any L2VNIs point to this instance, unlink them. */ |
5986 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5987 | bgpevpn_unlink_from_l3vni(vpn); | |
5988 | ||
ff9d54fb CS |
5989 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5990 | ||
fe1dc5a3 MK |
5991 | /* Delete the instance if it was autocreated */ |
5992 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5993 | bgp_delete(bgp_vrf); | |
5994 | ||
5995 | return 0; | |
5996 | } | |
5997 | ||
128ea8ab | 5998 | /* |
5999 | * Handle del of a local VNI. | |
6000 | */ | |
d62a17ae | 6001 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 6002 | { |
d62a17ae | 6003 | struct bgpevpn *vpn; |
128ea8ab | 6004 | |
d62a17ae | 6005 | /* Locate VNI hash */ |
6006 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6007 | if (!vpn) { | |
1e00627b | 6008 | if (bgp_debug_zebra(NULL)) |
ade6974d | 6009 | flog_warn( |
e50f7cfd | 6010 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
6011 | "%u: VNI hash entry for VNI %u not found at DEL", |
6012 | bgp->vrf_id, vni); | |
d62a17ae | 6013 | return 0; |
6014 | } | |
128ea8ab | 6015 | |
d62a17ae | 6016 | /* Remove all local EVPN routes and schedule for processing (to |
6017 | * withdraw from peers). | |
6018 | */ | |
6019 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 6020 | |
db0e1937 MK |
6021 | /* |
6022 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
6023 | */ | |
6024 | bgp_tip_del(bgp, &vpn->originator_ip); | |
6025 | ||
d62a17ae | 6026 | /* Clear "live" flag and see if hash needs to be freed. */ |
6027 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6028 | if (!is_vni_configured(vpn)) | |
6029 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 6030 | |
d62a17ae | 6031 | return 0; |
128ea8ab | 6032 | } |
6033 | ||
6034 | /* | |
d1911c26 | 6035 | * Handle add (or update) of a local VNI. The VNI changes we care |
6036 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 6037 | */ |
d62a17ae | 6038 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
6039 | struct in_addr originator_ip, |
6040 | vrf_id_t tenant_vrf_id, | |
6041 | struct in_addr mcast_grp) | |
6042 | ||
d62a17ae | 6043 | { |
6044 | struct bgpevpn *vpn; | |
6045 | struct prefix_evpn p; | |
6046 | ||
d62a17ae | 6047 | /* Lookup VNI. If present and no change, exit. */ |
6048 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 6049 | if (vpn) { |
29c53922 | 6050 | |
d1911c26 | 6051 | if (is_vni_live(vpn) |
6052 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 6053 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 6054 | && vpn->tenant_vrf_id == tenant_vrf_id) |
6055 | /* Probably some other param has changed that we don't | |
6056 | * care about. */ | |
6057 | return 0; | |
6058 | ||
76d07c7a AK |
6059 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
6060 | ||
d1911c26 | 6061 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
6062 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
6063 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 6064 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
6065 | bgpevpn_link_to_l3vni(vpn); |
6066 | } | |
29c53922 | 6067 | |
d1911c26 | 6068 | /* If tunnel endpoint IP has changed, update (and delete prior |
6069 | * type-3 route, if needed.) | |
6070 | */ | |
6071 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
6072 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 6073 | |
d1911c26 | 6074 | /* Update all routes with new endpoint IP and/or export RT |
6075 | * for VRFs | |
6076 | */ | |
6077 | if (is_vni_live(vpn)) | |
6078 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 6079 | } |
6080 | ||
6081 | /* Create or update as appropriate. */ | |
6082 | if (!vpn) { | |
76d07c7a AK |
6083 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
6084 | mcast_grp); | |
d62a17ae | 6085 | if (!vpn) { |
af4c2728 | 6086 | flog_err( |
e50f7cfd | 6087 | EC_BGP_VNI, |
d62a17ae | 6088 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
6089 | bgp->vrf_id, vni); | |
6090 | return -1; | |
6091 | } | |
6092 | } | |
6093 | ||
db0e1937 | 6094 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6095 | if (is_vni_live(vpn)) |
6096 | return 0; | |
6097 | ||
d62a17ae | 6098 | /* Mark as "live" */ |
6099 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6100 | ||
db0e1937 MK |
6101 | /* tunnel is now active, add tunnel-ip to db */ |
6102 | bgp_tip_add(bgp, &originator_ip); | |
6103 | ||
6104 | /* filter routes as nexthop database has changed */ | |
6105 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
6106 | ||
fd069644 DS |
6107 | /* |
6108 | * Create EVPN type-3 route and schedule for processing. | |
6109 | * | |
6110 | * RT-3 only if doing head-end replication | |
6111 | */ | |
833b8a50 AK |
6112 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6113 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
6114 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
6115 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
6116 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
6117 | "%u: Type3 route creation failure for VNI %u", | |
6118 | bgp->vrf_id, vni); | |
6119 | return -1; | |
6120 | } | |
d62a17ae | 6121 | } |
6122 | ||
6123 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6124 | * VNI, | |
6125 | * install them. | |
6126 | */ | |
6127 | install_routes_for_vni(bgp, vpn); | |
6128 | ||
d7d97010 MK |
6129 | /* If we are advertising gateway mac-ip |
6130 | It needs to be conveyed again to zebra */ | |
6131 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6132 | ||
df070e6f CS |
6133 | /* advertise svi mac-ip knob to zebra */ |
6134 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6135 | ||
d62a17ae | 6136 | return 0; |
b18825eb | 6137 | } |
14c1a7bf | 6138 | |
50f74cf1 | 6139 | /* |
6140 | * bgp_evpn_local_es_del | |
6141 | */ | |
6142 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
6143 | esi_t *esi, | |
6144 | struct ipaddr *originator_ip) | |
6145 | { | |
6146 | char buf[ESI_STR_LEN]; | |
6147 | struct evpnes *es = NULL; | |
6148 | ||
6149 | if (!bgp->esihash) { | |
e50f7cfd | 6150 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6151 | bgp->vrf_id); |
50f74cf1 | 6152 | return -1; |
6153 | } | |
6154 | ||
6155 | /* Lookup ESI hash - should exist. */ | |
6156 | es = bgp_evpn_lookup_es(bgp, esi); | |
6157 | if (!es) { | |
e50f7cfd | 6158 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
6159 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
6160 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6161 | return -1; |
6162 | } | |
6163 | ||
6164 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 6165 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 6166 | */ |
6167 | delete_routes_for_es(bgp, es); | |
6168 | ||
6169 | /* free the hash entry */ | |
6170 | bgp_evpn_es_free(bgp, es); | |
6171 | ||
6172 | return 0; | |
6173 | } | |
6174 | ||
6175 | /* | |
6176 | * bgp_evpn_local_es_add | |
6177 | */ | |
6178 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
6179 | esi_t *esi, | |
6180 | struct ipaddr *originator_ip) | |
6181 | { | |
6182 | char buf[ESI_STR_LEN]; | |
6183 | struct evpnes *es = NULL; | |
6184 | struct prefix_evpn p; | |
6185 | ||
6186 | if (!bgp->esihash) { | |
e50f7cfd | 6187 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6188 | bgp->vrf_id); |
50f74cf1 | 6189 | return -1; |
6190 | } | |
6191 | ||
6192 | /* create the new es */ | |
2bb9eff4 | 6193 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 6194 | if (!es) { |
6195 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
6196 | if (!es) { | |
af4c2728 | 6197 | flog_err( |
e50f7cfd | 6198 | EC_BGP_ES_CREATE, |
50f74cf1 | 6199 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
6200 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
6201 | return -1; | |
6202 | } | |
6203 | } | |
6204 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
6205 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
6206 | ||
6207 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
6208 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 6209 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
6210 | "%u: Type4 route creation failure for ESI %s", |
6211 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6212 | return -1; |
6213 | } | |
6214 | ||
6215 | /* import all remote ES routes in th ES table */ | |
6216 | install_routes_for_es(bgp, es); | |
6217 | ||
6218 | return 0; | |
6219 | } | |
6220 | ||
fd069644 DS |
6221 | /* |
6222 | * Handle change in setting for BUM handling. The supported values | |
6223 | * are head-end replication and dropping all BUM packets. Any change | |
6224 | * should be registered with zebra. Also, if doing head-end replication, | |
6225 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6226 | * to be dropped, the RT-3s must be withdrawn. | |
6227 | */ | |
6228 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6229 | { | |
6230 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6231 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6232 | "Flooding" : "Flooding Disabled"); | |
6233 | ||
6234 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6235 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6236 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6237 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6238 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6239 | } | |
6240 | ||
7724c0a1 | 6241 | /* |
6242 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6243 | * EVPN routes from peers. | |
6244 | */ | |
d62a17ae | 6245 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6246 | { |
e3b78da8 | 6247 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6248 | void *))cleanup_vni_on_disable, |
6249 | bgp); | |
7724c0a1 | 6250 | } |
6251 | ||
14c1a7bf | 6252 | /* |
6253 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6254 | * BGP instance (default) is being freed. | |
6255 | */ | |
d62a17ae | 6256 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6257 | { |
1525e99f | 6258 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6259 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6260 | bgp); |
6261 | ||
6262 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 6263 | bgp->import_rt_hash = NULL; |
1525e99f DS |
6264 | |
6265 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 6266 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
6267 | |
6268 | hash_free(bgp->vnihash); | |
d62a17ae | 6269 | bgp->vnihash = NULL; |
50f74cf1 | 6270 | if (bgp->esihash) |
6271 | hash_free(bgp->esihash); | |
6272 | bgp->esihash = NULL; | |
1525e99f | 6273 | |
6a154c88 DL |
6274 | list_delete(&bgp->vrf_import_rtl); |
6275 | list_delete(&bgp->vrf_export_rtl); | |
6276 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6277 | } |
6278 | ||
6279 | /* | |
6280 | * Initialization for EVPN | |
6281 | * Create | |
6282 | * VNI hash table | |
6283 | * hash for RT to VNI | |
14c1a7bf | 6284 | */ |
d62a17ae | 6285 | void bgp_evpn_init(struct bgp *bgp) |
6286 | { | |
6287 | bgp->vnihash = | |
6288 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 6289 | bgp->esihash = |
6290 | hash_create(esi_hash_keymake, esi_cmp, | |
6291 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 6292 | bgp->import_rt_hash = |
6293 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6294 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6295 | bgp->vrf_import_rt_hash = |
6296 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6297 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6298 | bgp->vrf_import_rtl = list_new(); |
6299 | bgp->vrf_import_rtl->cmp = | |
6300 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6301 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
6302 | bgp->vrf_export_rtl = list_new(); |
6303 | bgp->vrf_export_rtl->cmp = | |
6304 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6305 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 6306 | bgp->l2vnis = list_new(); |
64465785 | 6307 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6308 | /* By default Duplicate Address Dection is enabled. |
6309 | * Max-moves (N) 5, detection time (M) 180 | |
6310 | * default action is warning-only | |
6311 | * freeze action permanently freezes address, | |
6312 | * and freeze time (auto-recovery) is disabled. | |
6313 | */ | |
6314 | if (bgp->evpn_info) { | |
6315 | bgp->evpn_info->dup_addr_detect = true; | |
6316 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6317 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6318 | bgp->evpn_info->dad_freeze = false; | |
6319 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6320 | /* Initialize zebra vxlan */ |
6321 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6322 | /* Enable PIP feature by default for bgp vrf instance */ |
6323 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6324 | struct bgp *bgp_default; | |
6325 | ||
6326 | bgp->evpn_info->advertise_pip = true; | |
6327 | bgp_default = bgp_get_default(); | |
6328 | if (bgp_default) | |
6329 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6330 | } | |
85c8d83b | 6331 | } |
fd069644 DS |
6332 | |
6333 | /* Default BUM handling is to do head-end replication. */ | |
6334 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 6335 | } |
10ebe1ab MK |
6336 | |
6337 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6338 | { | |
6339 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
6340 | } | |
44c69747 LK |
6341 | |
6342 | /* | |
6343 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6344 | */ | |
5f040085 | 6345 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6346 | { |
6347 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6348 | ||
6349 | if (!pfx || pfx->family != AF_EVPN) | |
6350 | return 0; | |
6351 | ||
6352 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6353 | return 0; | |
6354 | ||
6355 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6356 | } | |
7c312383 AD |
6357 | |
6358 | /* | |
6359 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6360 | */ | |
5a1ae2c2 | 6361 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6362 | { |
6363 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6364 | ||
6365 | /* | |
e11329ca | 6366 | * EVPN routes should be marked as valid only if the nexthop is |
6367 | * reachable. Only if this happens, the route should be imported | |
6368 | * (into VNI or VRF routing tables) and/or advertised. | |
6369 | * Note: This is currently applied for EVPN type-2, type-3 and | |
6370 | * type-5 routes. It may be tweaked later on for other routes, or | |
6371 | * even removed completely when all routes are handled. | |
7c312383 AD |
6372 | */ |
6373 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 6374 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
6375 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
6376 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6377 | return true; |
6378 | ||
6379 | return false; | |
6380 | } |