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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
43 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 44 | #include "bgpd/bgp_encap_types.h" |
45 | #include "bgpd/bgp_debug.h" | |
14454c9f | 46 | #include "bgpd/bgp_errors.h" |
128ea8ab | 47 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 48 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 49 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 50 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 51 | #include "bgpd/bgp_mac.h" |
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, |
50f74cf1 | 67 | struct bgp_node *rn, |
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 CS |
498 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
499 | struct prefix_evpn *p, | |
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(); |
551 | ecommunity_add_val(ecomadd, &eval); | |
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, |
586 | struct prefix_evpn *p, | |
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)) | |
603 | zlog_debug("%s: No zebra instance to talk to, not installing remote macip", | |
604 | __PRETTY_FUNCTION__); | |
d62a17ae | 605 | return 0; |
bb4ef1ae | 606 | } |
d62a17ae | 607 | s = zclient->obuf; |
608 | stream_reset(s); | |
609 | ||
996c9314 LB |
610 | zclient_create_header( |
611 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
612 | bgp->vrf_id); | |
d62a17ae | 613 | stream_putl(s, vpn->vni); |
3714a385 | 614 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 615 | /* IP address length and IP address, if any. */ |
3714a385 | 616 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 617 | stream_putl(s, 0); |
618 | else { | |
3714a385 | 619 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 620 | : IPV6_MAX_BYTELEN; |
621 | stream_putl(s, ipa_len); | |
3714a385 | 622 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 623 | } |
624 | stream_put_in_addr(s, &remote_vtep_ip); | |
625 | ||
ead40654 | 626 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 627 | /* Also TX the sequence number of the best route. */ |
628 | if (add) { | |
ead40654 | 629 | stream_putc(s, flags); |
f07e1c99 | 630 | stream_putl(s, seq); |
631 | } | |
d62a17ae | 632 | |
633 | stream_putw_at(s, 0, stream_get_endp(s)); | |
634 | ||
635 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 636 | zlog_debug( |
f07e1c99 | 637 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 638 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 639 | prefix_mac2str(&p->prefix.macip_addr.mac, |
640 | buf1, sizeof(buf1)), | |
641 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 642 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
643 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
644 | sizeof(buf2))); | |
d62a17ae | 645 | |
646 | return zclient_send_message(zclient); | |
7ef5a232 | 647 | } |
b18825eb | 648 | |
128ea8ab | 649 | /* |
650 | * Add (update) or delete remote VTEP from zebra. | |
651 | */ | |
d62a17ae | 652 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
b16dd019 AK |
653 | struct prefix_evpn *p, |
654 | int flood_control, int add) | |
128ea8ab | 655 | { |
d62a17ae | 656 | struct stream *s; |
128ea8ab | 657 | |
d62a17ae | 658 | /* Check socket. */ |
659 | if (!zclient || zclient->sock < 0) | |
660 | return 0; | |
128ea8ab | 661 | |
d62a17ae | 662 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
663 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
664 | if (BGP_DEBUG(zebra, ZEBRA)) | |
665 | zlog_debug("%s: No zebra instance to talk to, not installing remote vtep", | |
666 | __PRETTY_FUNCTION__); | |
d62a17ae | 667 | return 0; |
bb4ef1ae | 668 | } |
128ea8ab | 669 | |
d62a17ae | 670 | s = zclient->obuf; |
671 | stream_reset(s); | |
128ea8ab | 672 | |
996c9314 LB |
673 | zclient_create_header( |
674 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
675 | bgp->vrf_id); | |
d62a17ae | 676 | stream_putl(s, vpn->vni); |
3714a385 | 677 | if (is_evpn_prefix_ipaddr_v4(p)) |
678 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
679 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 680 | flog_err( |
e50f7cfd | 681 | EC_BGP_VTEP_INVALID, |
d62a17ae | 682 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
683 | add ? "ADD" : "DEL", vpn->vni); | |
684 | return -1; | |
685 | } | |
b16dd019 | 686 | stream_putl(s, flood_control); |
128ea8ab | 687 | |
d62a17ae | 688 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 689 | |
d62a17ae | 690 | if (bgp_debug_zebra(NULL)) |
691 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
692 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 693 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 694 | |
d62a17ae | 695 | return zclient_send_message(zclient); |
128ea8ab | 696 | } |
697 | ||
50f74cf1 | 698 | /* |
699 | * Build extended community for EVPN ES (type-4) route | |
700 | */ | |
701 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
702 | struct attr *attr) | |
703 | { | |
704 | struct ecommunity ecom_encap; | |
705 | struct ecommunity ecom_es_rt; | |
706 | struct ecommunity_val eval; | |
707 | struct ecommunity_val eval_es_rt; | |
708 | bgp_encap_types tnl_type; | |
709 | struct ethaddr mac; | |
710 | ||
711 | /* Encap */ | |
712 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
713 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
714 | encode_encap_extcomm(tnl_type, &eval); | |
715 | ecom_encap.size = 1; | |
716 | ecom_encap.val = (uint8_t *)eval.val; | |
717 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
718 | ||
719 | /* ES import RT */ | |
720 | memset(&mac, 0, sizeof(struct ethaddr)); | |
721 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
722 | es_get_system_mac(&es->esi, &mac); | |
723 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
724 | ecom_es_rt.size = 1; | |
725 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
726 | attr->ecommunity = | |
727 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
728 | ||
729 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
730 | } | |
731 | ||
342dd0c6 | 732 | /* |
733 | * Build extended communities for EVPN prefix route. | |
734 | */ | |
735 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
736 | struct attr *attr) | |
737 | { | |
738 | struct ecommunity ecom_encap; | |
739 | struct ecommunity ecom_rmac; | |
740 | struct ecommunity_val eval; | |
741 | struct ecommunity_val eval_rmac; | |
742 | bgp_encap_types tnl_type; | |
743 | struct listnode *node, *nnode; | |
744 | struct ecommunity *ecom; | |
745 | struct list *vrf_export_rtl = NULL; | |
746 | ||
747 | /* Encap */ | |
748 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
749 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
750 | encode_encap_extcomm(tnl_type, &eval); | |
751 | ecom_encap.size = 1; | |
d7c0a89a | 752 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 753 | |
754 | /* Add Encap */ | |
755 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
756 | ||
757 | /* Add the export RTs for L3VNI/VRF */ | |
758 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
759 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
760 | attr->ecommunity = | |
761 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 762 | |
763 | /* add the router mac extended community */ | |
764 | if (!is_zero_mac(&attr->rmac)) { | |
765 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
766 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
767 | ecom_rmac.size = 1; | |
768 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
769 | attr->ecommunity = |
770 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 771 | } |
772 | ||
773 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
774 | } | |
775 | ||
128ea8ab | 776 | /* |
1ec31309 | 777 | * Build extended communities for EVPN route. |
778 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
779 | * and ENCAP extended communities are applicable for all routes. | |
780 | * The default gateway extended community and MAC mobility (sticky) extended | |
781 | * community are added as needed based on passed settings - only for type-2 | |
782 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
783 | * added, if present, based on passed settings - only for non-link-local | |
784 | * type-2 routes. | |
128ea8ab | 785 | */ |
7ec156a9 | 786 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 787 | int add_l3_ecomm) |
128ea8ab | 788 | { |
d62a17ae | 789 | struct ecommunity ecom_encap; |
790 | struct ecommunity ecom_sticky; | |
ead40654 | 791 | struct ecommunity ecom_default_gw; |
bc59a672 | 792 | struct ecommunity ecom_rmac; |
68e33151 | 793 | struct ecommunity ecom_na; |
d62a17ae | 794 | struct ecommunity_val eval; |
795 | struct ecommunity_val eval_sticky; | |
ead40654 | 796 | struct ecommunity_val eval_default_gw; |
bc59a672 | 797 | struct ecommunity_val eval_rmac; |
68e33151 CS |
798 | struct ecommunity_val eval_na; |
799 | ||
d62a17ae | 800 | bgp_encap_types tnl_type; |
801 | struct listnode *node, *nnode; | |
802 | struct ecommunity *ecom; | |
d7c0a89a | 803 | uint32_t seqnum; |
7a3e76f1 | 804 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 805 | |
d62a17ae | 806 | /* Encap */ |
807 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
808 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
809 | encode_encap_extcomm(tnl_type, &eval); | |
810 | ecom_encap.size = 1; | |
d7c0a89a | 811 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 812 | |
d62a17ae | 813 | /* Add Encap */ |
814 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 815 | |
7a3e76f1 | 816 | /* Add the export RTs for L2VNI */ |
d62a17ae | 817 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
818 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 819 | |
1ec31309 | 820 | /* Add the export RTs for L3VNI if told to - caller determines |
821 | * when this should be done. | |
523cafc4 | 822 | */ |
1ec31309 | 823 | if (add_l3_ecomm) { |
7ec156a9 MK |
824 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
825 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
826 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
827 | ecom)) | |
996c9314 LB |
828 | attr->ecommunity = ecommunity_merge( |
829 | attr->ecommunity, ecom); | |
7ec156a9 | 830 | } |
f1f8b53c | 831 | } |
7a3e76f1 | 832 | |
1ec31309 | 833 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 834 | if (attr->sticky) { |
835 | seqnum = 0; | |
836 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
837 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
838 | ecom_sticky.size = 1; | |
d7c0a89a | 839 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 840 | attr->ecommunity = |
841 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
842 | } | |
c85c03c7 | 843 | |
1ec31309 | 844 | /* Add RMAC, if told to. */ |
845 | if (add_l3_ecomm) { | |
bc59a672 MK |
846 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
847 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
848 | ecom_rmac.size = 1; | |
849 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
850 | attr->ecommunity = |
851 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
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) { | |
d7c0a89a QY |
904 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
905 | + (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, |
d594a14c | 931 | struct prefix_evpn *p, struct bgp_path_info *pi) |
128ea8ab | 932 | { |
d62a17ae | 933 | int ret; |
d594a14c | 934 | uint8_t flags; |
b16dd019 | 935 | int flood_control; |
128ea8ab | 936 | |
d594a14c AK |
937 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
938 | flags = 0; | |
939 | if (pi->attr->sticky) | |
940 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
941 | if (pi->attr->default_gw) | |
942 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
943 | if (is_evpn_prefix_ipaddr_v6(p) && | |
944 | pi->attr->router_flag) | |
945 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
946 | ret = bgp_zebra_send_remote_macip( | |
947 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
948 | mac_mobility_seqnum(pi->attr)); | |
949 | } else { | |
b16dd019 AK |
950 | switch (pi->attr->pmsi_tnl_type) { |
951 | case PMSI_TNLTYPE_INGR_REPL: | |
952 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
953 | break; | |
954 | ||
955 | case PMSI_TNLTYPE_PIM_SM: | |
956 | flood_control = VXLAN_FLOOD_PIM_SM; | |
957 | break; | |
958 | ||
959 | default: | |
960 | flood_control = VXLAN_FLOOD_DISABLED; | |
961 | break; | |
962 | } | |
963 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 964 | } |
128ea8ab | 965 | |
d62a17ae | 966 | return ret; |
128ea8ab | 967 | } |
968 | ||
969 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 970 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
971 | struct prefix_evpn *p, | |
972 | struct in_addr remote_vtep_ip) | |
128ea8ab | 973 | { |
d62a17ae | 974 | int ret; |
128ea8ab | 975 | |
d62a17ae | 976 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
977 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 978 | 0, 0, 0); |
d62a17ae | 979 | else |
b16dd019 AK |
980 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
981 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 982 | |
d62a17ae | 983 | return ret; |
128ea8ab | 984 | } |
985 | ||
986 | /* | |
987 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
988 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
989 | * from peers. | |
990 | */ | |
d62a17ae | 991 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
992 | struct bgp_node *rn, | |
4b7e6066 | 993 | struct bgp_path_info *old_local) |
128ea8ab | 994 | { |
d62a17ae | 995 | struct bgp_node *global_rn; |
40381db7 | 996 | struct bgp_path_info *pi; |
d62a17ae | 997 | afi_t afi = AFI_L2VPN; |
998 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 999 | |
d62a17ae | 1000 | /* Locate route node in the global EVPN routing table. Note that |
1001 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1002 | * L3VPN routes. | |
1003 | */ | |
1004 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1005 | (struct prefix *)&rn->p, &vpn->prd); | |
1006 | if (global_rn) { | |
1007 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1008 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 1009 | |
d62a17ae | 1010 | /* Schedule for processing - withdraws to peers happen from |
1011 | * this table. | |
1012 | */ | |
40381db7 | 1013 | if (pi) |
d62a17ae | 1014 | bgp_process(bgp, global_rn, afi, safi); |
1015 | bgp_unlock_node(global_rn); | |
1016 | } | |
128ea8ab | 1017 | |
d62a17ae | 1018 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 1019 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 1020 | } |
1021 | ||
50f74cf1 | 1022 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
1023 | { | |
1024 | struct in_addr *ip; | |
1025 | ||
1026 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 1027 | |
1028 | ip->s_addr = vtep.s_addr; | |
1029 | return ip; | |
1030 | } | |
1031 | ||
1032 | static void es_vtep_free(struct in_addr *ip) | |
1033 | { | |
1034 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
1035 | } | |
1036 | ||
1037 | /* check if VTEP is already part of the list */ | |
1038 | static int is_vtep_present_in_list(struct list *list, | |
1039 | struct in_addr vtep) | |
1040 | { | |
1041 | struct listnode *node = NULL; | |
1042 | struct in_addr *tmp; | |
1043 | ||
1044 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
1045 | if (tmp->s_addr == vtep.s_addr) | |
1046 | return 1; | |
1047 | } | |
1048 | return 0; | |
1049 | } | |
1050 | ||
2bb9eff4 DS |
1051 | /* |
1052 | * Best path for ES route was changed, | |
1053 | * update the list of VTEPs for this ES | |
1054 | */ | |
50f74cf1 | 1055 | static int evpn_es_install_vtep(struct bgp *bgp, |
1056 | struct evpnes *es, | |
1057 | struct prefix_evpn *p, | |
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 | */ | |
1100 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1101 | struct evpnes *es, | |
1102 | struct bgp_node *rn) | |
1103 | { | |
1104 | int ret = 0; | |
1105 | afi_t afi = AFI_L2VPN; | |
1106 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1107 | struct bgp_path_info *old_select; /* old best */ |
1108 | struct bgp_path_info *new_select; /* new best */ | |
1109 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1110 | |
1111 | /* Compute the best path. */ | |
1112 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1113 | &old_and_new, afi, safi); | |
1114 | old_select = old_and_new.old; | |
1115 | new_select = old_and_new.new; | |
1116 | ||
2bb9eff4 DS |
1117 | /* |
1118 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1119 | * updated |
1120 | */ | |
1121 | if (old_select && old_select == new_select | |
1122 | && old_select->type == ZEBRA_ROUTE_BGP | |
1123 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1124 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1125 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1126 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
50f74cf1 | 1127 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1128 | ret = evpn_es_install_vtep(bgp, es, | |
1129 | (struct prefix_evpn *)&rn->p, | |
1130 | old_select->attr->nexthop); | |
1131 | } | |
1defdda8 | 1132 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1133 | bgp_zebra_clear_route_change_flags(rn); |
1134 | return ret; | |
1135 | } | |
1136 | ||
1137 | /* If the user did a "clear" this flag will be set */ | |
1138 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1139 | ||
2bb9eff4 DS |
1140 | /* |
1141 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1142 | * into the zebra RIB. |
1143 | */ | |
1144 | if (old_select || new_select) | |
1145 | bgp_bump_version(rn); | |
1146 | ||
1147 | if (old_select) | |
18ee8310 | 1148 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1149 | if (new_select) { |
18ee8310 DS |
1150 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1151 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1152 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1153 | } |
1154 | ||
1155 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1156 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1157 | ret = evpn_es_install_vtep(bgp, es, | |
1158 | (struct prefix_evpn *)&rn->p, | |
1159 | new_select->attr->nexthop); | |
1160 | } else { | |
1161 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1162 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1163 | ret = evpn_es_uninstall_vtep( |
1164 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1165 | old_select->attr->nexthop); | |
50f74cf1 | 1166 | } |
1167 | ||
1168 | /* Clear any route change flags. */ | |
1169 | bgp_zebra_clear_route_change_flags(rn); | |
1170 | ||
18ee8310 | 1171 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1172 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1173 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1174 | |
1175 | return ret; | |
1176 | } | |
1177 | ||
128ea8ab | 1178 | /* |
1179 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1180 | * if appropriate. | |
1181 | */ | |
d62a17ae | 1182 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1183 | struct bgp_node *rn) | |
1184 | { | |
4b7e6066 DS |
1185 | struct bgp_path_info *old_select, *new_select; |
1186 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1187 | afi_t afi = AFI_L2VPN; |
1188 | safi_t safi = SAFI_EVPN; | |
1189 | int ret = 0; | |
1190 | ||
1191 | /* Compute the best path. */ | |
1192 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1193 | afi, safi); | |
1194 | old_select = old_and_new.old; | |
1195 | new_select = old_and_new.new; | |
1196 | ||
1197 | /* If the best path hasn't changed - see if there is still something to | |
1198 | * update | |
1199 | * to zebra RIB. | |
1200 | */ | |
1201 | if (old_select && old_select == new_select | |
1202 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1203 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1204 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1205 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1206 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
d594a14c | 1207 | if (bgp_zebra_has_route_changed(rn, old_select)) |
996c9314 LB |
1208 | ret = evpn_zebra_install( |
1209 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
d594a14c | 1210 | old_select); |
1defdda8 | 1211 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1212 | bgp_zebra_clear_route_change_flags(rn); |
1213 | return ret; | |
1214 | } | |
1215 | ||
1216 | /* If the user did a "clear" this flag will be set */ | |
1217 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1218 | ||
1219 | /* bestpath has changed; update relevant fields and install or uninstall | |
1220 | * into the zebra RIB. | |
1221 | */ | |
1222 | if (old_select || new_select) | |
1223 | bgp_bump_version(rn); | |
1224 | ||
1225 | if (old_select) | |
18ee8310 | 1226 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1227 | if (new_select) { |
18ee8310 DS |
1228 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1229 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1230 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1231 | } |
1232 | ||
1233 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1234 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
d62a17ae | 1235 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
d594a14c AK |
1236 | new_select); |
1237 | ||
d62a17ae | 1238 | /* If an old best existed and it was a "local" route, the only |
1239 | * reason | |
1240 | * it would be supplanted is due to MAC mobility procedures. So, | |
1241 | * we | |
1242 | * need to do an implicit delete and withdraw that route from | |
1243 | * peers. | |
1244 | */ | |
1245 | if (old_select && old_select->peer == bgp->peer_self | |
1246 | && old_select->type == ZEBRA_ROUTE_BGP | |
1247 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1248 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1249 | } else { | |
1250 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1251 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1252 | ret = evpn_zebra_uninstall(bgp, vpn, |
1253 | (struct prefix_evpn *)&rn->p, | |
1254 | old_select->attr->nexthop); | |
1255 | } | |
1256 | ||
1257 | /* Clear any route change flags. */ | |
1258 | bgp_zebra_clear_route_change_flags(rn); | |
1259 | ||
18ee8310 | 1260 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1261 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1262 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1263 | |
1264 | return ret; | |
128ea8ab | 1265 | } |
1266 | ||
ead40654 MK |
1267 | /* |
1268 | * Return true if the local ri for this rn is of type gateway mac | |
1269 | */ | |
1270 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1271 | { | |
40381db7 DS |
1272 | struct bgp_path_info *tmp_pi = NULL; |
1273 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1274 | |
40381db7 | 1275 | local_pi = NULL; |
6f94b685 DS |
1276 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1277 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1278 | if (tmp_pi->peer == bgp->peer_self |
1279 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1280 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1281 | local_pi = tmp_pi; | |
ead40654 MK |
1282 | } |
1283 | ||
40381db7 | 1284 | if (!local_pi) |
ead40654 MK |
1285 | return 0; |
1286 | ||
40381db7 | 1287 | return local_pi->attr->default_gw; |
ead40654 MK |
1288 | } |
1289 | ||
c85c03c7 | 1290 | |
1291 | /* | |
1292 | * Return true if the local ri for this rn has sticky set | |
1293 | */ | |
d62a17ae | 1294 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1295 | { |
40381db7 DS |
1296 | struct bgp_path_info *tmp_pi; |
1297 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1298 | |
40381db7 | 1299 | local_pi = NULL; |
6f94b685 DS |
1300 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1301 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1302 | if (tmp_pi->peer == bgp->peer_self |
1303 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1304 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1305 | local_pi = tmp_pi; | |
d62a17ae | 1306 | } |
c85c03c7 | 1307 | |
40381db7 | 1308 | if (!local_pi) |
d62a17ae | 1309 | return 0; |
c85c03c7 | 1310 | |
40381db7 | 1311 | return local_pi->attr->sticky; |
c85c03c7 | 1312 | } |
1313 | ||
50f74cf1 | 1314 | /* |
1315 | * create or update EVPN type4 route entry. | |
1316 | * This could be in the ES table or the global table. | |
1317 | * TODO: handle remote ES (type4) routes as well | |
1318 | */ | |
4b7e6066 | 1319 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1320 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1321 | struct bgp_node *rn, struct attr *attr, |
1322 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1323 | int *route_changed) |
1324 | { | |
1325 | char buf[ESI_STR_LEN]; | |
1326 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1327 | struct bgp_path_info *tmp_pi = NULL; |
1328 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1329 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1330 | struct attr *attr_new = NULL; |
1331 | struct prefix_evpn *evp = NULL; | |
1332 | ||
1333 | *ri = NULL; | |
1334 | *route_changed = 1; | |
1335 | evp = (struct prefix_evpn *)&rn->p; | |
1336 | ||
1337 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1338 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1339 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1340 | if (tmp_pi->peer == bgp->peer_self |
1341 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1342 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1343 | local_pi = tmp_pi; | |
1344 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1345 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1346 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1347 | remote_pi = tmp_pi; | |
50f74cf1 | 1348 | } |
1349 | ||
6f94b685 | 1350 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1351 | * An ES route has esi + vtep_ip as the key, |
1352 | * We shouldn't see the same route from any other vtep. | |
1353 | */ | |
40381db7 | 1354 | if (remote_pi) { |
af4c2728 | 1355 | flog_err( |
e50f7cfd | 1356 | EC_BGP_ES_INVALID, |
14454c9f DS |
1357 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1358 | bgp->vrf_id, | |
1359 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1360 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1361 | return -1; |
1362 | } | |
1363 | ||
40381db7 | 1364 | if (!local_pi && !add) |
50f74cf1 | 1365 | return 0; |
1366 | ||
1367 | /* create or update the entry */ | |
40381db7 | 1368 | if (!local_pi) { |
50f74cf1 | 1369 | |
1370 | /* Add or update attribute to hash */ | |
1371 | attr_new = bgp_attr_intern(attr); | |
1372 | ||
1373 | /* Create new route with its attribute. */ | |
40381db7 DS |
1374 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1375 | bgp->peer_self, attr_new, rn); | |
1376 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1377 | |
1378 | /* add the newly created path to the route-node */ | |
40381db7 | 1379 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1380 | } else { |
40381db7 DS |
1381 | tmp_pi = local_pi; |
1382 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1383 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1384 | *route_changed = 0; |
1385 | else { | |
1386 | /* The attribute has changed. | |
1387 | * Add (or update) attribute to hash. */ | |
1388 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1389 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1390 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1391 | |
1392 | /* Restore route, if needed. */ | |
40381db7 DS |
1393 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1394 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1395 | |
1396 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1397 | bgp_attr_unintern(&tmp_pi->attr); |
1398 | tmp_pi->attr = attr_new; | |
1399 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1400 | } |
1401 | } | |
1402 | ||
1403 | /* Return back the route entry. */ | |
40381db7 | 1404 | *ri = tmp_pi; |
50f74cf1 | 1405 | return 0; |
1406 | } | |
1407 | ||
1408 | /* update evpn es (type-4) route */ | |
1409 | static int update_evpn_type4_route(struct bgp *bgp, | |
1410 | struct evpnes *es, | |
1411 | struct prefix_evpn *p) | |
1412 | { | |
1413 | int ret = 0; | |
1414 | int route_changed = 0; | |
1415 | char buf[ESI_STR_LEN]; | |
1416 | char buf1[INET6_ADDRSTRLEN]; | |
1417 | afi_t afi = AFI_L2VPN; | |
1418 | safi_t safi = SAFI_EVPN; | |
1419 | struct attr attr; | |
1420 | struct attr *attr_new = NULL; | |
1421 | struct bgp_node *rn = NULL; | |
40381db7 | 1422 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1423 | |
1424 | memset(&attr, 0, sizeof(struct attr)); | |
1425 | ||
1426 | /* Build path-attribute for this route. */ | |
1427 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1428 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1429 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1430 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1431 | ||
1432 | /* Set up extended community. */ | |
1433 | build_evpn_type4_route_extcomm(es, &attr); | |
1434 | ||
1435 | /* First, create (or fetch) route node within the ESI. */ | |
1436 | /* NOTE: There is no RD here. */ | |
1437 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1438 | ||
1439 | /* Create or update route entry. */ | |
40381db7 DS |
1440 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1441 | &pi, &route_changed); | |
50f74cf1 | 1442 | if (ret != 0) { |
1c50c1c0 QY |
1443 | flog_err(EC_BGP_ES_INVALID, |
1444 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1445 | bgp->vrf_id, | |
1446 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1447 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1448 | } |
1449 | ||
40381db7 DS |
1450 | assert(pi); |
1451 | attr_new = pi->attr; | |
50f74cf1 | 1452 | |
1453 | /* Perform route selection; | |
1454 | * this is just to set the flags correctly | |
1455 | * as local route in the ES always wins. | |
1456 | */ | |
1457 | evpn_es_route_select_install(bgp, es, rn); | |
1458 | bgp_unlock_node(rn); | |
1459 | ||
1460 | /* If this is a new route or some attribute has changed, export the | |
1461 | * route to the global table. The route will be advertised to peers | |
1462 | * from there. Note that this table is a 2-level tree (RD-level + | |
1463 | * Prefix-level) similar to L3VPN routes. | |
1464 | */ | |
1465 | if (route_changed) { | |
40381db7 | 1466 | struct bgp_path_info *global_pi; |
50f74cf1 | 1467 | |
1468 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1469 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1470 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1471 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1472 | |
1473 | /* Schedule for processing and unlock node. */ | |
1474 | bgp_process(bgp, rn, afi, safi); | |
1475 | bgp_unlock_node(rn); | |
1476 | } | |
1477 | ||
1478 | /* Unintern temporary. */ | |
1479 | aspath_unintern(&attr.aspath); | |
1480 | return 0; | |
1481 | } | |
1482 | ||
5e53dce3 | 1483 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1484 | struct bgp *bgp_vrf, afi_t afi, |
1485 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1486 | struct attr *attr, int *route_changed) |
342dd0c6 | 1487 | { |
1488 | struct attr *attr_new = NULL; | |
40381db7 | 1489 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1490 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1491 | struct bgp_path_info *local_pi = NULL; |
1492 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1493 | |
5424b7ba | 1494 | *route_changed = 0; |
342dd0c6 | 1495 | /* locate the local route entry if any */ |
6f94b685 DS |
1496 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1497 | tmp_pi = tmp_pi->next) { | |
5e53dce3 | 1498 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1499 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1500 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1501 | local_pi = tmp_pi; | |
342dd0c6 | 1502 | } |
1503 | ||
2bb9eff4 | 1504 | /* |
0437e105 | 1505 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1506 | * Otherwise see if route attr has changed |
523cafc4 | 1507 | */ |
40381db7 | 1508 | if (!local_pi) { |
342dd0c6 | 1509 | |
5424b7ba MK |
1510 | /* route has changed as this is the first entry */ |
1511 | *route_changed = 1; | |
1512 | ||
342dd0c6 | 1513 | /* Add (or update) attribute to hash. */ |
1514 | attr_new = bgp_attr_intern(attr); | |
1515 | ||
1516 | /* create the route info from attribute */ | |
40381db7 | 1517 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
5e53dce3 | 1518 | bgp_evpn->peer_self, attr_new, rn); |
40381db7 | 1519 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1520 | |
b57ba6d2 | 1521 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1522 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1523 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1524 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1525 | pi->extra->num_labels = 1; | |
342dd0c6 | 1526 | |
1527 | /* add the route entry to route node*/ | |
40381db7 | 1528 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1529 | } else { |
1530 | ||
40381db7 DS |
1531 | tmp_pi = local_pi; |
1532 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1533 | |
1534 | /* attribute changed */ | |
1535 | *route_changed = 1; | |
1536 | ||
342dd0c6 | 1537 | /* The attribute has changed. */ |
1538 | /* Add (or update) attribute to hash. */ | |
1539 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1540 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1541 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1542 | |
1543 | /* Restore route, if needed. */ | |
40381db7 DS |
1544 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1545 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1546 | |
1547 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1548 | bgp_attr_unintern(&tmp_pi->attr); |
1549 | tmp_pi->attr = attr_new; | |
1550 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1551 | } |
1552 | } | |
1553 | return 0; | |
1554 | } | |
1555 | ||
1556 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1557 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1558 | struct attr *src_attr) | |
342dd0c6 | 1559 | { |
1560 | afi_t afi = AFI_L2VPN; | |
1561 | safi_t safi = SAFI_EVPN; | |
1562 | struct attr attr; | |
1563 | struct bgp_node *rn = NULL; | |
5e53dce3 | 1564 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1565 | int route_changed = 0; |
342dd0c6 | 1566 | |
5e53dce3 T |
1567 | bgp_evpn = bgp_get_evpn(); |
1568 | if (!bgp_evpn) | |
faafdfa8 | 1569 | return 0; |
342dd0c6 | 1570 | |
2f69f6d3 | 1571 | /* Build path attribute for this route - use the source attr, if |
1572 | * present, else treat as locally originated. | |
1573 | */ | |
1574 | if (src_attr) | |
6f4f49b2 | 1575 | attr = *src_attr; |
2f69f6d3 | 1576 | else { |
1577 | memset(&attr, 0, sizeof(struct attr)); | |
1578 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1579 | } | |
5394a276 | 1580 | |
5394a276 CS |
1581 | /* Advertise Primary IP (PIP) is enabled, send individual |
1582 | * IP (default instance router-id) as nexthop. | |
1583 | * PIP is disabled or vrr interface is not present | |
27727001 | 1584 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1585 | */ |
1586 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1587 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1588 | attr.nexthop = bgp_vrf->originator_ip; | |
1589 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1590 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1591 | } else { |
27727001 CS |
1592 | /* copy sys rmac */ |
1593 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1594 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1595 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1596 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1597 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1598 | if (bgp_debug_zebra(NULL)) { | |
1599 | char buf1[PREFIX_STRLEN]; | |
1600 | ||
1601 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1602 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1603 | prefix2str(evp, buf1, sizeof(buf1))); | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | if (bgp_debug_zebra(NULL)) { | |
1608 | char buf[ETHER_ADDR_STRLEN]; | |
1609 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1610 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1611 | |
1612 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1613 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1614 | prefix2str(evp, buf1, sizeof(buf1)), | |
1615 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1616 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1617 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1618 | } |
1619 | ||
342dd0c6 | 1620 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1621 | |
1622 | /* Setup RT and encap extended community */ | |
1623 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1624 | ||
1625 | /* get the route node in global table */ | |
5e53dce3 | 1626 | rn = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
996c9314 | 1627 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1628 | assert(rn); |
1629 | ||
1630 | /* create or update the route entry within the route node */ | |
5e53dce3 | 1631 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, rn, &attr, |
996c9314 | 1632 | &route_changed); |
342dd0c6 | 1633 | |
1634 | /* schedule for processing and unlock node */ | |
5424b7ba | 1635 | if (route_changed) { |
5e53dce3 | 1636 | bgp_process(bgp_evpn, rn, afi, safi); |
5424b7ba MK |
1637 | bgp_unlock_node(rn); |
1638 | } | |
342dd0c6 | 1639 | |
1640 | /* uninten temporary */ | |
5ee65f6f | 1641 | if (!src_attr) |
1642 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1643 | return 0; |
1644 | } | |
1645 | ||
128ea8ab | 1646 | /* |
1647 | * Create or update EVPN route entry. This could be in the VNI route table | |
1648 | * or the global route table. | |
1649 | */ | |
d62a17ae | 1650 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1651 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1652 | struct attr *attr, int add, |
40381db7 | 1653 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1654 | uint32_t seq) |
d62a17ae | 1655 | { |
40381db7 DS |
1656 | struct bgp_path_info *tmp_pi; |
1657 | struct bgp_path_info *local_pi; | |
d62a17ae | 1658 | struct attr *attr_new; |
b57ba6d2 | 1659 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1660 | uint32_t num_labels = 1; |
d62a17ae | 1661 | int route_change = 1; |
d7c0a89a | 1662 | uint8_t sticky = 0; |
b57ba6d2 | 1663 | struct prefix_evpn *evp; |
d62a17ae | 1664 | |
40381db7 | 1665 | *pi = NULL; |
b57ba6d2 MK |
1666 | evp = (struct prefix_evpn *)&rn->p; |
1667 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1668 | |
f07e1c99 | 1669 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1670 | local_pi = NULL; |
6f94b685 DS |
1671 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1672 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1673 | if (tmp_pi->peer == bgp->peer_self |
1674 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1675 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1676 | local_pi = tmp_pi; | |
d62a17ae | 1677 | } |
1678 | ||
1679 | /* If route doesn't exist already, create a new one, if told to. | |
1680 | * Otherwise act based on whether the attributes of the route have | |
1681 | * changed or not. | |
1682 | */ | |
40381db7 | 1683 | if (!local_pi && !add) |
d62a17ae | 1684 | return 0; |
1685 | ||
f07e1c99 | 1686 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1687 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1688 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1689 | |
40381db7 | 1690 | if (!local_pi) { |
d62a17ae | 1691 | /* Add (or update) attribute to hash. */ |
1692 | attr_new = bgp_attr_intern(attr); | |
1693 | ||
1694 | /* Extract MAC mobility sequence number, if any. */ | |
1695 | attr_new->mm_seqnum = | |
1696 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1697 | attr_new->sticky = sticky; | |
1698 | ||
1699 | /* Create new route with its attribute. */ | |
40381db7 | 1700 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1701 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1702 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1703 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1704 | |
1705 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1706 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1707 | |
1708 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1709 | * Only attach second label if we are advertising two labels for | |
1710 | * type-2 routes. | |
1711 | */ | |
996c9314 LB |
1712 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1713 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1714 | vni_t l3vni; |
1715 | ||
1716 | l3vni = bgpevpn_get_l3vni(vpn); | |
1717 | if (l3vni) { | |
1718 | vni2label(l3vni, &label[1]); | |
1719 | num_labels++; | |
1720 | } | |
1721 | } | |
d62a17ae | 1722 | |
40381db7 DS |
1723 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1724 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1725 | /* Mark route as self type-2 route */ |
1726 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1727 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
40381db7 | 1728 | bgp_path_info_add(rn, tmp_pi); |
d62a17ae | 1729 | } else { |
40381db7 DS |
1730 | tmp_pi = local_pi; |
1731 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1732 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1733 | route_change = 0; |
1734 | else { | |
c48d9f5f MK |
1735 | /* |
1736 | * The attributes have changed, type-2 routes needs to | |
1737 | * be advertised with right labels. | |
1738 | */ | |
1739 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1740 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1741 | && CHECK_FLAG(vpn->flags, | |
1742 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1743 | vni_t l3vni; |
1744 | ||
1745 | l3vni = bgpevpn_get_l3vni(vpn); | |
1746 | if (l3vni) { | |
1747 | vni2label(l3vni, &label[1]); | |
1748 | num_labels++; | |
1749 | } | |
1750 | } | |
40381db7 DS |
1751 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1752 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1753 | |
d62a17ae | 1754 | /* The attribute has changed. */ |
1755 | /* Add (or update) attribute to hash. */ | |
1756 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1757 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1758 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1759 | |
f07e1c99 | 1760 | /* Extract MAC mobility sequence number, if any. */ |
1761 | attr_new->mm_seqnum = | |
1762 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1763 | attr_new->sticky = sticky; | |
1764 | ||
d62a17ae | 1765 | /* Restore route, if needed. */ |
40381db7 DS |
1766 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1767 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1768 | |
1769 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1770 | bgp_attr_unintern(&tmp_pi->attr); |
1771 | tmp_pi->attr = attr_new; | |
1772 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1773 | } |
1774 | } | |
1775 | ||
1776 | /* Return back the route entry. */ | |
40381db7 | 1777 | *pi = tmp_pi; |
d62a17ae | 1778 | return route_change; |
128ea8ab | 1779 | } |
1780 | ||
ec0ab544 AK |
1781 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1782 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1783 | { | |
1784 | struct bgp_path_info *tmp_ri; | |
1785 | struct bgp_path_info *curr_select = NULL; | |
1786 | ||
1787 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1788 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1789 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1790 | curr_select = tmp_ri; | |
1791 | break; | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1796 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1797 | evpn_zebra_install(bgp, vpn, | |
1798 | (struct prefix_evpn *)&rn->p, | |
1799 | curr_select); | |
1800 | } | |
1801 | ||
6d8c603a AK |
1802 | /* |
1803 | * If the local route was not selected evict it and tell zebra to re-add | |
1804 | * the best remote dest. | |
1805 | * | |
1806 | * Typically a local path added by zebra is expected to be selected as | |
1807 | * best. In which case when a remote path wins as best (later) | |
1808 | * evpn_route_select_install itself evicts the older-local-best path. | |
1809 | * | |
1810 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1811 | * is possible that the local path is no longer the "older" best path. | |
1812 | * It is a path that was never designated as best and hence requires | |
1813 | * additional handling to prevent bgp from injecting and holding on to a | |
1814 | * non-best local path. | |
1815 | */ | |
1816 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1817 | struct bgpevpn *vpn, | |
1818 | struct bgp_node *rn, | |
9a8897aa | 1819 | struct bgp_path_info *local_pi) |
6d8c603a | 1820 | { |
6d8c603a AK |
1821 | char buf[PREFIX_STRLEN]; |
1822 | ||
6d8c603a AK |
1823 | /* local path was not picked as the winner; kick it out */ |
1824 | if (bgp_debug_zebra(NULL)) { | |
1825 | zlog_debug("evicting local evpn prefix %s as remote won", | |
1826 | prefix2str(&rn->p, buf, sizeof(buf))); | |
1827 | } | |
6d8c603a AK |
1828 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1829 | bgp_path_info_reap(rn, local_pi); | |
1830 | ||
1831 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1832 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1833 | } |
1834 | ||
128ea8ab | 1835 | /* |
1836 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1837 | * and schedule for processing. | |
1838 | */ | |
d62a17ae | 1839 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1840 | struct prefix_evpn *p, uint8_t flags, |
1841 | uint32_t seq) | |
128ea8ab | 1842 | { |
d62a17ae | 1843 | struct bgp_node *rn; |
1844 | struct attr attr; | |
1845 | struct attr *attr_new; | |
1ec31309 | 1846 | int add_l3_ecomm = 0; |
40381db7 | 1847 | struct bgp_path_info *pi; |
d62a17ae | 1848 | afi_t afi = AFI_L2VPN; |
1849 | safi_t safi = SAFI_EVPN; | |
1850 | int route_change; | |
128ea8ab | 1851 | |
d62a17ae | 1852 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1853 | |
d62a17ae | 1854 | /* Build path-attribute for this route. */ |
1855 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1856 | attr.nexthop = vpn->originator_ip; | |
1857 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1858 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1859 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1860 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1861 | attr.router_flag = CHECK_FLAG(flags, |
1862 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1863 | |
1864 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1865 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1866 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1867 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1868 | } | |
be41eb68 | 1869 | |
1ec31309 | 1870 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1871 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1872 | uint8_t af_flags = 0; | |
1873 | ||
1874 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1875 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1876 | ||
1877 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
1878 | ||
1879 | if (bgp_debug_zebra(NULL)) { | |
1880 | char buf[ETHER_ADDR_STRLEN]; | |
1881 | char buf1[PREFIX_STRLEN]; | |
1882 | ||
1883 | zlog_debug("VRF %s vni %u type-2 route evp %s RMAC %s nexthop %s", | |
1884 | vpn->bgp_vrf ? | |
1885 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1886 | vpn->vni, | |
1887 | prefix2str(p, buf1, sizeof(buf1)), | |
1888 | prefix_mac2str(&attr.rmac, buf, | |
1889 | sizeof(buf)), | |
1890 | inet_ntoa(attr.mp_nexthop_global_in)); | |
1891 | } | |
1892 | } | |
1893 | ||
a21bd7a3 | 1894 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1895 | |
1ec31309 | 1896 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1897 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1898 | * these routes. | |
1899 | */ | |
1900 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1901 | (is_evpn_prefix_ipaddr_v4(p) || |
1902 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1903 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1904 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1905 | add_l3_ecomm = 1; |
1906 | ||
1907 | /* Set up extended community. */ | |
1908 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1909 | |
d62a17ae | 1910 | /* First, create (or fetch) route node within the VNI. */ |
1911 | /* NOTE: There is no RD here. */ | |
1912 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1913 | |
d62a17ae | 1914 | /* Create or update route entry. */ |
1915 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1916 | 1, &pi, flags, seq); |
1917 | assert(pi); | |
1918 | attr_new = pi->attr; | |
128ea8ab | 1919 | |
6d8c603a AK |
1920 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1921 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1922 | |
1923 | /* Perform route selection. Normally, the local route in the | |
1924 | * VNI is expected to win and be the best route. However, if | |
1925 | * there is a race condition where a host moved from local to | |
1926 | * remote and the remote route was received in BGP just prior | |
1927 | * to the local MACIP notification from zebra, the remote | |
1928 | * route would win, and we should evict the defunct local route | |
1929 | * and (re)install the remote route into zebra. | |
1930 | */ | |
d62a17ae | 1931 | evpn_route_select_install(bgp, vpn, rn); |
6d8c603a | 1932 | /* |
9a8897aa AK |
1933 | * If the new local route was not selected evict it and tell zebra |
1934 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1935 | * routes. | |
6d8c603a | 1936 | */ |
9a8897aa AK |
1937 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1938 | route_change = 0; | |
1939 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1940 | } | |
6d8c603a AK |
1941 | bgp_path_info_unlock(pi); |
1942 | ||
d62a17ae | 1943 | bgp_unlock_node(rn); |
128ea8ab | 1944 | |
d62a17ae | 1945 | /* If this is a new route or some attribute has changed, export the |
1946 | * route to the global table. The route will be advertised to peers | |
1947 | * from there. Note that this table is a 2-level tree (RD-level + | |
1948 | * Prefix-level) similar to L3VPN routes. | |
1949 | */ | |
1950 | if (route_change) { | |
40381db7 | 1951 | struct bgp_path_info *global_pi; |
128ea8ab | 1952 | |
d62a17ae | 1953 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1954 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1955 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1956 | &global_pi, flags, seq); |
128ea8ab | 1957 | |
d62a17ae | 1958 | /* Schedule for processing and unlock node. */ |
1959 | bgp_process(bgp, rn, afi, safi); | |
1960 | bgp_unlock_node(rn); | |
1961 | } | |
128ea8ab | 1962 | |
d62a17ae | 1963 | /* Unintern temporary. */ |
1964 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1965 | |
d62a17ae | 1966 | return 0; |
128ea8ab | 1967 | } |
1968 | ||
50f74cf1 | 1969 | /* |
1970 | * Delete EVPN route entry. | |
1971 | * The entry can be in ESI/VNI table or the global table. | |
1972 | */ | |
4b7e6066 | 1973 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1974 | struct bgp_node *rn, |
40381db7 | 1975 | struct bgp_path_info **pi) |
342dd0c6 | 1976 | { |
40381db7 | 1977 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1978 | |
40381db7 | 1979 | *pi = NULL; |
342dd0c6 | 1980 | |
50f74cf1 | 1981 | /* Now, find matching route. */ |
6f94b685 DS |
1982 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1983 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1984 | if (tmp_pi->peer == bgp->peer_self |
1985 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1986 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1987 | break; |
1988 | ||
40381db7 | 1989 | *pi = tmp_pi; |
342dd0c6 | 1990 | |
1991 | /* Mark route for delete. */ | |
40381db7 DS |
1992 | if (tmp_pi) |
1993 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1994 | } |
1995 | ||
50f74cf1 | 1996 | |
1997 | ||
1998 | /* Delete EVPN ES (type-4) route */ | |
1999 | static int delete_evpn_type4_route(struct bgp *bgp, | |
2000 | struct evpnes *es, | |
2001 | struct prefix_evpn *p) | |
2002 | { | |
2003 | afi_t afi = AFI_L2VPN; | |
2004 | safi_t safi = SAFI_EVPN; | |
40381db7 | 2005 | struct bgp_path_info *pi; |
50f74cf1 | 2006 | struct bgp_node *rn = NULL; /* rn in esi table */ |
2007 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
2008 | ||
2009 | /* First, locate the route node within the ESI. | |
2010 | * If it doesn't exist, ther is nothing to do. | |
2011 | * Note: there is no RD here. | |
2012 | */ | |
2013 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 2014 | if (!rn) |
50f74cf1 | 2015 | return 0; |
2016 | ||
2017 | /* Next, locate route node in the global EVPN routing table. | |
2018 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
2019 | */ | |
2020 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2021 | (struct prefix *)p, &es->prd); | |
2022 | if (global_rn) { | |
2023 | ||
2024 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2025 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 2026 | |
2027 | /* Schedule for processing - withdraws to peers happen from | |
2028 | * this table. | |
2029 | */ | |
40381db7 | 2030 | if (pi) |
50f74cf1 | 2031 | bgp_process(bgp, global_rn, afi, safi); |
2032 | bgp_unlock_node(global_rn); | |
2033 | } | |
2034 | ||
2035 | /* | |
2036 | * Delete route entry in the ESI route table. | |
2037 | * This can just be removed. | |
2038 | */ | |
40381db7 DS |
2039 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2040 | if (pi) | |
2041 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2042 | bgp_unlock_node(rn); |
2043 | return 0; | |
2044 | } | |
2045 | ||
342dd0c6 | 2046 | /* Delete EVPN type5 route */ |
996c9314 | 2047 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2048 | { |
2049 | afi_t afi = AFI_L2VPN; | |
2050 | safi_t safi = SAFI_EVPN; | |
2051 | struct bgp_node *rn = NULL; | |
40381db7 | 2052 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2053 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2054 | |
5e53dce3 T |
2055 | bgp_evpn = bgp_get_evpn(); |
2056 | if (!bgp_evpn) | |
faafdfa8 | 2057 | return 0; |
342dd0c6 | 2058 | |
2059 | /* locate the global route entry for this type-5 prefix */ | |
5e53dce3 | 2060 | rn = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
342dd0c6 | 2061 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
2062 | if (!rn) | |
2063 | return 0; | |
2064 | ||
5e53dce3 | 2065 | delete_evpn_route_entry(bgp_evpn, afi, safi, rn, &pi); |
40381db7 | 2066 | if (pi) |
5e53dce3 | 2067 | bgp_process(bgp_evpn, rn, afi, safi); |
342dd0c6 | 2068 | bgp_unlock_node(rn); |
2069 | return 0; | |
2070 | } | |
2071 | ||
128ea8ab | 2072 | /* |
2073 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2074 | * schedule for processing. | |
2075 | */ | |
d62a17ae | 2076 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2077 | struct prefix_evpn *p) | |
2078 | { | |
2079 | struct bgp_node *rn, *global_rn; | |
40381db7 | 2080 | struct bgp_path_info *pi; |
d62a17ae | 2081 | afi_t afi = AFI_L2VPN; |
2082 | safi_t safi = SAFI_EVPN; | |
2083 | ||
2084 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2085 | * there | |
2086 | * is nothing further to do. | |
2087 | */ | |
2088 | /* NOTE: There is no RD here. */ | |
2089 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2090 | if (!rn) | |
2091 | return 0; | |
2092 | ||
2093 | /* Next, locate route node in the global EVPN routing table. Note that | |
2094 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2095 | * L3VPN routes. | |
2096 | */ | |
2097 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2098 | (struct prefix *)p, &vpn->prd); | |
2099 | if (global_rn) { | |
2100 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2101 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 2102 | |
2103 | /* Schedule for processing - withdraws to peers happen from | |
2104 | * this table. | |
2105 | */ | |
40381db7 | 2106 | if (pi) |
d62a17ae | 2107 | bgp_process(bgp, global_rn, afi, safi); |
2108 | bgp_unlock_node(global_rn); | |
2109 | } | |
2110 | ||
2111 | /* Delete route entry in the VNI route table. This can just be removed. | |
2112 | */ | |
40381db7 | 2113 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 2114 | if (pi) { |
40381db7 | 2115 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
2116 | evpn_route_select_install(bgp, vpn, rn); |
2117 | } | |
d62a17ae | 2118 | bgp_unlock_node(rn); |
2119 | ||
2120 | return 0; | |
128ea8ab | 2121 | } |
2122 | ||
2123 | /* | |
2124 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2125 | * be scheduled for advertise to peers. | |
2126 | */ | |
d62a17ae | 2127 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2128 | { | |
2129 | afi_t afi; | |
2130 | safi_t safi; | |
2131 | struct bgp_node *rn; | |
40381db7 | 2132 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2133 | struct attr attr; |
d62a17ae | 2134 | struct attr *attr_new; |
f07e1c99 | 2135 | uint32_t seq; |
1ec31309 | 2136 | int add_l3_ecomm = 0; |
d62a17ae | 2137 | |
2138 | afi = AFI_L2VPN; | |
2139 | safi = SAFI_EVPN; | |
d62a17ae | 2140 | |
2141 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2142 | * routes updated, update corresponding entry in the global table too. | |
2143 | */ | |
2144 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2145 | rn = bgp_route_next(rn)) { | |
2146 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2147 | struct bgp_node *rd_rn; | |
40381db7 | 2148 | struct bgp_path_info *global_pi; |
d62a17ae | 2149 | |
2150 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2151 | continue; | |
2152 | ||
f07e1c99 | 2153 | /* Identify local route. */ |
6f94b685 DS |
2154 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2155 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2156 | if (tmp_pi->peer == bgp->peer_self |
2157 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2158 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2159 | break; |
7ec156a9 | 2160 | } |
d62a17ae | 2161 | |
40381db7 | 2162 | if (!tmp_pi) |
d62a17ae | 2163 | continue; |
2164 | ||
f07e1c99 | 2165 | /* |
2166 | * Build attribute per local route as the MAC mobility and | |
2167 | * some other values could differ for different routes. The | |
2168 | * attributes will be shared in the hash table. | |
2169 | */ | |
2170 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2171 | attr.nexthop = vpn->originator_ip; | |
2172 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2173 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
0ca10580 CS |
2174 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, |
2175 | tmp_pi->extra->af_flags); | |
f07e1c99 | 2176 | |
2177 | if (evpn_route_is_sticky(bgp, rn)) | |
2178 | attr.sticky = 1; | |
2179 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2180 | attr.default_gw = 1; | |
2181 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2182 | attr.router_flag = 1; | |
2183 | } | |
2184 | ||
0ca10580 CS |
2185 | if (bgp_debug_zebra(NULL)) { |
2186 | char buf[ETHER_ADDR_STRLEN]; | |
2187 | char buf1[PREFIX_STRLEN]; | |
2188 | ||
2189 | zlog_debug("VRF %s vni %u evp %s RMAC %s nexthop %s", | |
2190 | vpn->bgp_vrf ? | |
2191 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
2192 | vpn->vni, | |
2193 | prefix2str(evp, buf1, sizeof(buf1)), | |
2194 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
2195 | inet_ntoa(attr.mp_nexthop_global_in)); | |
2196 | } | |
2197 | ||
f07e1c99 | 2198 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if |
2199 | * using L3 VNI for type-2 routes also. | |
2200 | */ | |
2201 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2202 | !IN6_IS_ADDR_LINKLOCAL( |
2203 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2204 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2205 | bgpevpn_get_l3vni(vpn)) | |
2206 | add_l3_ecomm = 1; | |
2207 | ||
2208 | /* Set up extended community. */ | |
2209 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2210 | ||
40381db7 | 2211 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2212 | |
2213 | /* Update the route entry. */ | |
40381db7 DS |
2214 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2215 | 0, seq); | |
f07e1c99 | 2216 | |
7ab604ab CS |
2217 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2218 | bgp_path_info_lock(pi); | |
2219 | ||
2220 | /* Perform route selection. Normally, the local route in the | |
2221 | * VNI is expected to win and be the best route. However, | |
2222 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2223 | * that causes best selection to be based on next hop), a | |
2224 | * remote route could win. If the local route is the best, | |
2225 | * ensure it is updated in the global EVPN route table and | |
2226 | * advertised to peers; otherwise, ensure it is evicted and | |
2227 | * (re)install the remote route into zebra. | |
d62a17ae | 2228 | */ |
2229 | evpn_route_select_install(bgp, vpn, rn); | |
7ab604ab CS |
2230 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
2231 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
2232 | /* unlock pi */ | |
2233 | bgp_path_info_unlock(pi); | |
2234 | } else { | |
2235 | attr_new = pi->attr; | |
2236 | /* unlock pi */ | |
2237 | bgp_path_info_unlock(pi); | |
2238 | ||
2239 | /* Update route in global routing table. */ | |
2240 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2241 | (struct prefix *)evp, &vpn->prd); | |
2242 | assert(rd_rn); | |
2243 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, | |
2244 | attr_new, 0, &global_pi, 0, | |
2245 | mac_mobility_seqnum(attr_new)); | |
2246 | ||
2247 | /* Schedule for processing and unlock node. */ | |
2248 | bgp_process(bgp, rd_rn, afi, safi); | |
2249 | bgp_unlock_node(rd_rn); | |
2250 | } | |
d62a17ae | 2251 | |
f07e1c99 | 2252 | /* Unintern temporary. */ |
2253 | aspath_unintern(&attr.aspath); | |
2254 | ||
2255 | } | |
d62a17ae | 2256 | |
2257 | return 0; | |
128ea8ab | 2258 | } |
2259 | ||
2260 | /* | |
2261 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2262 | * global routing table. These are also scheduled for withdraw from peers. | |
2263 | */ | |
d62a17ae | 2264 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2265 | { |
d62a17ae | 2266 | afi_t afi; |
2267 | safi_t safi; | |
2268 | struct bgp_node *rdrn, *rn; | |
2269 | struct bgp_table *table; | |
40381db7 | 2270 | struct bgp_path_info *pi; |
128ea8ab | 2271 | |
d62a17ae | 2272 | afi = AFI_L2VPN; |
2273 | safi = SAFI_EVPN; | |
128ea8ab | 2274 | |
d62a17ae | 2275 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2276 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2277 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2278 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2279 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2280 | |
d62a17ae | 2281 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2282 | continue; | |
128ea8ab | 2283 | |
40381db7 DS |
2284 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2285 | if (pi) | |
d62a17ae | 2286 | bgp_process(bgp, rn, afi, safi); |
2287 | } | |
2288 | } | |
128ea8ab | 2289 | |
d62a17ae | 2290 | /* Unlock RD node. */ |
2291 | if (rdrn) | |
2292 | bgp_unlock_node(rdrn); | |
128ea8ab | 2293 | |
d62a17ae | 2294 | return 0; |
128ea8ab | 2295 | } |
2296 | ||
2297 | /* | |
2298 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2299 | * table as well as the per-VNI route table. | |
2300 | */ | |
d62a17ae | 2301 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2302 | { |
d62a17ae | 2303 | afi_t afi; |
2304 | safi_t safi; | |
2305 | struct bgp_node *rn; | |
40381db7 | 2306 | struct bgp_path_info *pi; |
128ea8ab | 2307 | |
d62a17ae | 2308 | afi = AFI_L2VPN; |
2309 | safi = SAFI_EVPN; | |
128ea8ab | 2310 | |
d62a17ae | 2311 | /* First, walk the global route table for this VNI's type-2 local |
2312 | * routes. | |
2313 | * EVPN routes are a 2-level table, first get the RD table. | |
2314 | */ | |
2315 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2316 | |
d62a17ae | 2317 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2318 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2319 | rn = bgp_route_next(rn)) { | |
2320 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2321 | |
d62a17ae | 2322 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2323 | continue; | |
128ea8ab | 2324 | |
40381db7 | 2325 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2326 | |
d62a17ae | 2327 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2328 | if (pi) |
2329 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2330 | } |
128ea8ab | 2331 | |
d62a17ae | 2332 | return 0; |
128ea8ab | 2333 | } |
2334 | ||
50f74cf1 | 2335 | /* |
2336 | * Delete all routes in per ES route-table | |
2337 | */ | |
2338 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2339 | { | |
2340 | struct bgp_node *rn; | |
40381db7 | 2341 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2342 | |
2343 | /* Walk this ES's route table and delete all routes. */ | |
2344 | for (rn = bgp_table_top(es->route_table); rn; | |
2345 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2346 | for (pi = bgp_node_get_bgp_path_info(rn); |
2347 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2348 | bgp_path_info_delete(rn, pi); |
2349 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2350 | } |
2351 | } | |
2352 | ||
2353 | return 0; | |
2354 | } | |
2355 | ||
128ea8ab | 2356 | /* |
2357 | * Delete all routes in the per-VNI route table. | |
2358 | */ | |
d62a17ae | 2359 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2360 | { |
d62a17ae | 2361 | struct bgp_node *rn; |
40381db7 | 2362 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2363 | |
d62a17ae | 2364 | /* Walk this VNI's route table and delete all routes. */ |
2365 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2366 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2367 | for (pi = bgp_node_get_bgp_path_info(rn); |
2368 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2369 | bgp_path_info_delete(rn, pi); |
2370 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2371 | } |
2372 | } | |
128ea8ab | 2373 | |
d62a17ae | 2374 | return 0; |
128ea8ab | 2375 | } |
2376 | ||
833b8a50 AK |
2377 | /* BUM traffic flood mode per-l2-vni */ |
2378 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2379 | struct bgpevpn *vpn) | |
2380 | { | |
2381 | /* if flooding has been globally disabled per-vni mode is | |
2382 | * not relevant | |
2383 | */ | |
2384 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2385 | return VXLAN_FLOOD_DISABLED; | |
2386 | ||
2387 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2388 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2389 | return VXLAN_FLOOD_PIM_SM; | |
2390 | ||
2391 | /* default is ingress replication */ | |
2392 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2393 | } | |
2394 | ||
128ea8ab | 2395 | /* |
2396 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2397 | * export RT getting modified or change to tunnel IP. Note that these | |
2398 | * situations need the route in the per-VNI table as well as the global | |
2399 | * table to be updated (as attributes change). | |
2400 | */ | |
0ca10580 | 2401 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2402 | { |
d62a17ae | 2403 | int ret; |
2404 | struct prefix_evpn p; | |
128ea8ab | 2405 | |
d62a17ae | 2406 | /* Update and advertise the type-3 route (only one) followed by the |
2407 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2408 | * |
2409 | * RT-3 only if doing head-end replication | |
d62a17ae | 2410 | */ |
833b8a50 AK |
2411 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2412 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
2413 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2414 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2415 | if (ret) | |
2416 | return ret; | |
2417 | } | |
128ea8ab | 2418 | |
d62a17ae | 2419 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2420 | } |
2421 | ||
50f74cf1 | 2422 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2423 | * Also remove all other routes from the per ES table. | |
2424 | * Invoked when ES is deleted. | |
2425 | */ | |
2426 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2427 | { | |
2428 | int ret; | |
2429 | char buf[ESI_STR_LEN]; | |
2430 | struct prefix_evpn p; | |
2431 | ||
2432 | /* Delete and withdraw locally learnt ES route */ | |
2433 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2434 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2435 | if (ret) { | |
e50f7cfd | 2436 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2437 | "%u failed to delete type-4 route for ESI %s", |
2438 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2439 | } |
2440 | ||
2441 | /* Delete all routes from per ES table */ | |
2442 | return delete_all_es_routes(bgp, es); | |
2443 | } | |
2444 | ||
128ea8ab | 2445 | /* |
2446 | * Delete (and withdraw) local routes for specified VNI from the global | |
2447 | * table and per-VNI table. After this, remove all other routes from | |
2448 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2449 | * (advertise-all-vni) being disabled. | |
2450 | */ | |
d62a17ae | 2451 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2452 | { |
d62a17ae | 2453 | int ret; |
2454 | struct prefix_evpn p; | |
128ea8ab | 2455 | |
d62a17ae | 2456 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2457 | * followed by type-3 routes (only one) - for this VNI. | |
2458 | */ | |
2459 | ret = delete_all_type2_routes(bgp, vpn); | |
2460 | if (ret) | |
2461 | return ret; | |
128ea8ab | 2462 | |
d62a17ae | 2463 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2464 | ret = delete_evpn_route(bgp, vpn, &p); | |
2465 | if (ret) | |
2466 | return ret; | |
128ea8ab | 2467 | |
d62a17ae | 2468 | /* Delete all routes from the per-VNI table. */ |
2469 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2470 | } |
2471 | ||
76d07c7a AK |
2472 | /* |
2473 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2474 | * remove the type-3 route if any. A new type-3 route will be generated | |
2475 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2476 | */ | |
2477 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2478 | struct in_addr mcast_grp) | |
2479 | { | |
2480 | struct prefix_evpn p; | |
2481 | ||
2482 | vpn->mcast_grp = mcast_grp; | |
2483 | ||
2484 | if (is_vni_live(vpn)) { | |
2485 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2486 | delete_evpn_route(bgp, vpn, &p); | |
2487 | } | |
2488 | ||
2489 | return 0; | |
2490 | } | |
2491 | ||
128ea8ab | 2492 | /* |
d1911c26 | 2493 | * There is a tunnel endpoint IP address change for this VNI, delete |
2494 | * prior type-3 route (if needed) and update. | |
2495 | * Note: Route re-advertisement happens elsewhere after other processing | |
2496 | * other changes. | |
128ea8ab | 2497 | */ |
d62a17ae | 2498 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2499 | struct in_addr originator_ip) | |
128ea8ab | 2500 | { |
d62a17ae | 2501 | struct prefix_evpn p; |
128ea8ab | 2502 | |
ddd16ed5 MK |
2503 | /* If VNI is not live, we only need to update the originator ip */ |
2504 | if (!is_vni_live(vpn)) { | |
2505 | vpn->originator_ip = originator_ip; | |
2506 | return 0; | |
2507 | } | |
2508 | ||
db0e1937 MK |
2509 | /* Update the tunnel-ip hash */ |
2510 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2511 | bgp_tip_add(bgp, &originator_ip); | |
2512 | ||
2513 | /* filter routes as martian nexthop db has changed */ | |
2514 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2515 | ||
d62a17ae | 2516 | /* Need to withdraw type-3 route as the originator IP is part |
2517 | * of the key. | |
2518 | */ | |
2519 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2520 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2521 | |
d62a17ae | 2522 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2523 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2524 | return 0; |
128ea8ab | 2525 | } |
2526 | ||
c011a88b DS |
2527 | static struct bgp_path_info * |
2528 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2529 | struct bgp_node *rn) | |
6b742349 DS |
2530 | { |
2531 | struct attr *attr_new; | |
2532 | struct bgp_path_info *pi; | |
2533 | ||
2534 | /* Add (or update) attribute to hash. */ | |
2535 | attr_new = bgp_attr_intern(parent_pi->attr); | |
2536 | ||
2537 | /* Create new route with its attribute. */ | |
2538 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2539 | attr_new, rn); | |
2540 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2541 | bgp_path_info_extra_get(pi); | |
2542 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2543 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2544 | if (parent_pi->extra) { | |
2545 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2546 | sizeof(pi->extra->label)); | |
2547 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
2548 | } | |
2549 | bgp_path_info_add(rn, pi); | |
c011a88b DS |
2550 | |
2551 | return pi; | |
6b742349 DS |
2552 | } |
2553 | ||
50f74cf1 | 2554 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2555 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2556 | struct prefix_evpn *p, |
40381db7 | 2557 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2558 | { |
2559 | int ret = 0; | |
2560 | struct bgp_node *rn = NULL; | |
40381db7 | 2561 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2562 | struct attr *attr_new = NULL; |
2563 | ||
2564 | /* Create (or fetch) route within the VNI. | |
2565 | * NOTE: There is no RD here. | |
2566 | */ | |
2567 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2568 | ||
2569 | /* Check if route entry is already present. */ | |
6f94b685 | 2570 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2571 | if (pi->extra |
2572 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2573 | break; |
2574 | ||
40381db7 | 2575 | if (!pi) { |
50f74cf1 | 2576 | /* Add (or update) attribute to hash. */ |
40381db7 | 2577 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2578 | |
2579 | /* Create new route with its attribute. */ | |
40381db7 DS |
2580 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2581 | parent_pi->peer, attr_new, rn); | |
2582 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2583 | bgp_path_info_extra_get(pi); | |
f4d7cb0e DS |
2584 | pi->extra->parent = bgp_path_info_lock(parent_pi); |
2585 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
40381db7 | 2586 | bgp_path_info_add(rn, pi); |
50f74cf1 | 2587 | } else { |
40381db7 DS |
2588 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2589 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2590 | bgp_unlock_node(rn); |
2591 | return 0; | |
2592 | } | |
2593 | /* The attribute has changed. */ | |
2594 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2595 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2596 | |
2597 | /* Restore route, if needed. */ | |
40381db7 DS |
2598 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2599 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2600 | |
2601 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2602 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2603 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2604 | |
2605 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2606 | bgp_attr_unintern(&pi->attr); |
2607 | pi->attr = attr_new; | |
2608 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2609 | } |
2610 | ||
2611 | /* Perform route selection and update zebra, if required. */ | |
2612 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2613 | return ret; | |
2614 | } | |
2615 | ||
d3135ba3 | 2616 | /* |
2617 | * Install route entry into the VRF routing table and invoke route selection. | |
2618 | */ | |
2619 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2620 | struct prefix_evpn *evp, | |
40381db7 | 2621 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2622 | { |
2623 | struct bgp_node *rn; | |
40381db7 | 2624 | struct bgp_path_info *pi; |
1ec31309 | 2625 | struct attr attr; |
d3135ba3 | 2626 | struct attr *attr_new; |
c4edf708 | 2627 | int ret = 0; |
d3135ba3 | 2628 | struct prefix p; |
2629 | struct prefix *pp = &p; | |
2630 | afi_t afi = 0; | |
2631 | safi_t safi = 0; | |
1eb88002 MK |
2632 | char buf[PREFIX_STRLEN]; |
2633 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2634 | |
2635 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2636 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2637 | |
1eb88002 | 2638 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2639 | zlog_debug( |
1ee069db | 2640 | "import evpn prefix %s as ip prefix %s in vrf %s", |
996c9314 LB |
2641 | prefix2str(evp, buf, sizeof(buf)), |
2642 | prefix2str(pp, buf1, sizeof(buf)), | |
2643 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2644 | } |
2645 | ||
d3135ba3 | 2646 | /* Create (or fetch) route within the VRF. */ |
2647 | /* NOTE: There is no RD here. */ | |
3714a385 | 2648 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2649 | afi = AFI_IP; |
2650 | safi = SAFI_UNICAST; | |
2651 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2652 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2653 | afi = AFI_IP6; |
2654 | safi = SAFI_UNICAST; | |
2655 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2656 | } else | |
2657 | return 0; | |
2658 | ||
1ec31309 | 2659 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2660 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2661 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2662 | * address for the rest of the code to flow through. In the case of IPv4, | |
2663 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2664 | */ |
6f4f49b2 | 2665 | attr = *parent_pi->attr; |
1ec31309 | 2666 | if (afi == AFI_IP6) |
2667 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2668 | else |
2669 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2670 | |
d3135ba3 | 2671 | /* Check if route entry is already present. */ |
6f94b685 | 2672 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2673 | if (pi->extra |
2674 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2675 | break; |
2676 | ||
6b742349 | 2677 | if (!pi) |
c011a88b | 2678 | pi = bgp_create_evpn_bgp_path_info(parent_pi, rn); |
6b742349 | 2679 | else { |
40381db7 DS |
2680 | if (attrhash_cmp(pi->attr, &attr) |
2681 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2682 | bgp_unlock_node(rn); |
2683 | return 0; | |
2684 | } | |
2685 | /* The attribute has changed. */ | |
2686 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2687 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2688 | |
2689 | /* Restore route, if needed. */ | |
40381db7 DS |
2690 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2691 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2692 | |
2693 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2694 | if ((afi == AFI_IP |
2695 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2696 | || (afi == AFI_IP6 | |
2697 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2698 | &attr_new->mp_nexthop_global))) | |
2699 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2700 | |
a9f8ad9f | 2701 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2702 | /* Unintern existing, set to new. */ |
40381db7 DS |
2703 | bgp_attr_unintern(&pi->attr); |
2704 | pi->attr = attr_new; | |
2705 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2706 | } |
d846e917 PG |
2707 | /* as it is an importation, change nexthop */ |
2708 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ANNC_NH_SELF); | |
d3135ba3 | 2709 | |
40381db7 | 2710 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2711 | |
d3135ba3 | 2712 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2713 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2714 | |
7452e879 | 2715 | /* Process for route leaking. */ |
2716 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2717 | ||
3c11d70a CS |
2718 | bgp_unlock_node(rn); |
2719 | ||
d3135ba3 | 2720 | return ret; |
2721 | } | |
2722 | ||
128ea8ab | 2723 | /* |
2724 | * Install route entry into the VNI routing table and invoke route selection. | |
2725 | */ | |
d62a17ae | 2726 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2727 | struct prefix_evpn *p, | |
40381db7 | 2728 | struct bgp_path_info *parent_pi) |
d62a17ae | 2729 | { |
2730 | struct bgp_node *rn; | |
40381db7 | 2731 | struct bgp_path_info *pi; |
d62a17ae | 2732 | struct attr *attr_new; |
2733 | int ret; | |
2734 | ||
2735 | /* Create (or fetch) route within the VNI. */ | |
2736 | /* NOTE: There is no RD here. */ | |
2737 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2738 | ||
2739 | /* Check if route entry is already present. */ | |
6f94b685 | 2740 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2741 | if (pi->extra |
2742 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2743 | break; |
2744 | ||
bd0254af MS |
2745 | if (!pi) { |
2746 | /* Create an info */ | |
2747 | (void)bgp_create_evpn_bgp_path_info(parent_pi, rn); | |
2748 | } else { | |
40381db7 DS |
2749 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2750 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2751 | bgp_unlock_node(rn); |
2752 | return 0; | |
2753 | } | |
2754 | /* The attribute has changed. */ | |
2755 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2756 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2757 | |
50f74cf1 | 2758 | /* Restore route, if needed. */ |
40381db7 DS |
2759 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2760 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2761 | |
2762 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2763 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2764 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2765 | |
2766 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2767 | bgp_attr_unintern(&pi->attr); |
2768 | pi->attr = attr_new; | |
2769 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2770 | } |
2771 | ||
2772 | /* Perform route selection and update zebra, if required. */ | |
2773 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2774 | ||
a97a1e11 CS |
2775 | bgp_unlock_node(rn); |
2776 | ||
50f74cf1 | 2777 | return ret; |
2778 | } | |
2779 | ||
2780 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2781 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 2782 | struct prefix_evpn *p, |
40381db7 | 2783 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2784 | { |
2785 | int ret; | |
2786 | struct bgp_node *rn; | |
40381db7 | 2787 | struct bgp_path_info *pi; |
50f74cf1 | 2788 | |
2789 | if (!es->route_table) | |
2790 | return 0; | |
2791 | ||
2792 | /* Locate route within the ESI. | |
2793 | * NOTE: There is no RD here. | |
2794 | */ | |
2795 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2796 | if (!rn) | |
2797 | return 0; | |
2798 | ||
2799 | /* Find matching route entry. */ | |
6f94b685 | 2800 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2801 | if (pi->extra |
2802 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2803 | break; |
d62a17ae | 2804 | |
40381db7 | 2805 | if (!pi) |
50f74cf1 | 2806 | return 0; |
d62a17ae | 2807 | |
50f74cf1 | 2808 | /* Mark entry for deletion */ |
40381db7 | 2809 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2810 | |
2811 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2812 | ret = evpn_es_route_select_install(bgp, es, rn); |
2813 | ||
2814 | /* Unlock route node. */ | |
2815 | bgp_unlock_node(rn); | |
d62a17ae | 2816 | |
2817 | return ret; | |
128ea8ab | 2818 | } |
2819 | ||
d3135ba3 | 2820 | /* |
2821 | * Uninstall route entry from the VRF routing table and send message | |
2822 | * to zebra, if appropriate. | |
2823 | */ | |
2824 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2825 | struct prefix_evpn *evp, | |
40381db7 | 2826 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2827 | { |
2828 | struct bgp_node *rn; | |
40381db7 | 2829 | struct bgp_path_info *pi; |
c4edf708 | 2830 | int ret = 0; |
d3135ba3 | 2831 | struct prefix p; |
2832 | struct prefix *pp = &p; | |
2833 | afi_t afi = 0; | |
2834 | safi_t safi = 0; | |
1eb88002 MK |
2835 | char buf[PREFIX_STRLEN]; |
2836 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2837 | |
2838 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2839 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2840 | |
1eb88002 | 2841 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2842 | zlog_debug( |
2843 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2844 | prefix2str(evp, buf, sizeof(buf)), | |
2845 | prefix2str(pp, buf1, sizeof(buf)), | |
2846 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2847 | } |
2848 | ||
d3135ba3 | 2849 | /* Locate route within the VRF. */ |
2850 | /* NOTE: There is no RD here. */ | |
3714a385 | 2851 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2852 | afi = AFI_IP; |
2853 | safi = SAFI_UNICAST; | |
2854 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2855 | } else { | |
2856 | afi = AFI_IP6; | |
2857 | safi = SAFI_UNICAST; | |
2858 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2859 | } | |
2860 | ||
2861 | if (!rn) | |
2862 | return 0; | |
2863 | ||
2864 | /* Find matching route entry. */ | |
6f94b685 | 2865 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2866 | if (pi->extra |
2867 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2868 | break; |
2869 | ||
40381db7 | 2870 | if (!pi) |
d3135ba3 | 2871 | return 0; |
2872 | ||
7452e879 | 2873 | /* Process for route leaking. */ |
2874 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2875 | ||
40381db7 | 2876 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2877 | |
d3135ba3 | 2878 | /* Mark entry for deletion */ |
40381db7 | 2879 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2880 | |
2881 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2882 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2883 | |
2884 | /* Unlock route node. */ | |
2885 | bgp_unlock_node(rn); | |
2886 | ||
2887 | return ret; | |
2888 | } | |
2889 | ||
128ea8ab | 2890 | /* |
2891 | * Uninstall route entry from the VNI routing table and send message | |
2892 | * to zebra, if appropriate. | |
2893 | */ | |
d62a17ae | 2894 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2895 | struct prefix_evpn *p, | |
40381db7 | 2896 | struct bgp_path_info *parent_pi) |
128ea8ab | 2897 | { |
d62a17ae | 2898 | struct bgp_node *rn; |
40381db7 | 2899 | struct bgp_path_info *pi; |
d62a17ae | 2900 | int ret; |
128ea8ab | 2901 | |
d62a17ae | 2902 | /* Locate route within the VNI. */ |
2903 | /* NOTE: There is no RD here. */ | |
2904 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2905 | if (!rn) | |
2906 | return 0; | |
128ea8ab | 2907 | |
d62a17ae | 2908 | /* Find matching route entry. */ |
6f94b685 | 2909 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2910 | if (pi->extra |
2911 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2912 | break; |
128ea8ab | 2913 | |
40381db7 | 2914 | if (!pi) |
d62a17ae | 2915 | return 0; |
128ea8ab | 2916 | |
d62a17ae | 2917 | /* Mark entry for deletion */ |
40381db7 | 2918 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2919 | |
d62a17ae | 2920 | /* Perform route selection and update zebra, if required. */ |
2921 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2922 | |
d62a17ae | 2923 | /* Unlock route node. */ |
2924 | bgp_unlock_node(rn); | |
128ea8ab | 2925 | |
d62a17ae | 2926 | return ret; |
128ea8ab | 2927 | } |
2928 | ||
50f74cf1 | 2929 | /* |
2930 | * Given a prefix, see if it belongs to ES. | |
2931 | */ | |
2932 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2933 | struct evpnes *es) | |
2934 | { | |
2935 | /* if not an ES route return false */ | |
2936 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2937 | return 0; | |
2938 | ||
2939 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2940 | return 1; | |
2941 | ||
2942 | return 0; | |
2943 | } | |
2944 | ||
5ba238b7 MK |
2945 | /* |
2946 | * Given a route entry and a VRF, see if this route entry should be | |
2947 | * imported into the VRF i.e., RTs match. | |
2948 | */ | |
4b7e6066 | 2949 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2950 | struct bgp_path_info *pi) |
5ba238b7 | 2951 | { |
40381db7 | 2952 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2953 | struct ecommunity *ecom; |
2954 | int i; | |
2955 | ||
2956 | assert(attr); | |
2957 | /* Route should have valid RT to be even considered. */ | |
2958 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2959 | return 0; | |
2960 | ||
2961 | ecom = attr->ecommunity; | |
2962 | if (!ecom || !ecom->size) | |
2963 | return 0; | |
2964 | ||
2965 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2966 | * matches, we're done. | |
2967 | */ | |
2968 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2969 | uint8_t *pnt; |
2970 | uint8_t type, sub_type; | |
5ba238b7 MK |
2971 | struct ecommunity_val *eval; |
2972 | struct ecommunity_val eval_tmp; | |
2973 | struct vrf_irt_node *irt; | |
2974 | ||
2975 | /* Only deal with RTs */ | |
2976 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2977 | eval = (struct ecommunity_val *)(ecom->val | |
2978 | + (i * ECOMMUNITY_SIZE)); | |
2979 | type = *pnt++; | |
2980 | sub_type = *pnt++; | |
2981 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2982 | continue; | |
2983 | ||
2984 | /* See if this RT matches specified VNIs import RTs */ | |
2985 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2986 | if (irt) |
5ba238b7 MK |
2987 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2988 | return 1; | |
2989 | ||
2990 | /* Also check for non-exact match. In this, we mask out the AS | |
2991 | * and | |
2992 | * only check on the local-admin sub-field. This is to | |
2993 | * facilitate using | |
2994 | * VNI as the RT for EBGP peering too. | |
2995 | */ | |
2996 | irt = NULL; | |
2997 | if (type == ECOMMUNITY_ENCODE_AS | |
2998 | || type == ECOMMUNITY_ENCODE_AS4 | |
2999 | || type == ECOMMUNITY_ENCODE_IP) { | |
3000 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3001 | mask_ecom_global_admin(&eval_tmp, eval); | |
3002 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3003 | } | |
5d9cbca2 | 3004 | if (irt) |
5ba238b7 MK |
3005 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3006 | return 1; | |
3007 | } | |
3008 | ||
3009 | return 0; | |
3010 | } | |
3011 | ||
128ea8ab | 3012 | /* |
3013 | * Given a route entry and a VNI, see if this route entry should be | |
3014 | * imported into the VNI i.e., RTs match. | |
3015 | */ | |
d62a17ae | 3016 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3017 | struct bgp_path_info *pi) |
d62a17ae | 3018 | { |
40381db7 | 3019 | struct attr *attr = pi->attr; |
d62a17ae | 3020 | struct ecommunity *ecom; |
3021 | int i; | |
3022 | ||
3023 | assert(attr); | |
3024 | /* Route should have valid RT to be even considered. */ | |
3025 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3026 | return 0; | |
3027 | ||
3028 | ecom = attr->ecommunity; | |
3029 | if (!ecom || !ecom->size) | |
3030 | return 0; | |
3031 | ||
3032 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3033 | * matches, we're done. | |
3034 | */ | |
3035 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3036 | uint8_t *pnt; |
3037 | uint8_t type, sub_type; | |
d62a17ae | 3038 | struct ecommunity_val *eval; |
3039 | struct ecommunity_val eval_tmp; | |
3040 | struct irt_node *irt; | |
3041 | ||
3042 | /* Only deal with RTs */ | |
3043 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3044 | eval = (struct ecommunity_val *)(ecom->val | |
3045 | + (i * ECOMMUNITY_SIZE)); | |
3046 | type = *pnt++; | |
3047 | sub_type = *pnt++; | |
3048 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3049 | continue; | |
3050 | ||
3051 | /* See if this RT matches specified VNIs import RTs */ | |
3052 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3053 | if (irt) |
d62a17ae | 3054 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3055 | return 1; | |
3056 | ||
3057 | /* Also check for non-exact match. In this, we mask out the AS | |
3058 | * and | |
3059 | * only check on the local-admin sub-field. This is to | |
3060 | * facilitate using | |
3061 | * VNI as the RT for EBGP peering too. | |
3062 | */ | |
3063 | irt = NULL; | |
3064 | if (type == ECOMMUNITY_ENCODE_AS | |
3065 | || type == ECOMMUNITY_ENCODE_AS4 | |
3066 | || type == ECOMMUNITY_ENCODE_IP) { | |
3067 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3068 | mask_ecom_global_admin(&eval_tmp, eval); | |
3069 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3070 | } | |
b1ab0dfe | 3071 | if (irt) |
d62a17ae | 3072 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3073 | return 1; | |
3074 | } | |
3075 | ||
3076 | return 0; | |
128ea8ab | 3077 | } |
3078 | ||
50f74cf1 | 3079 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
3080 | struct evpnes *es, | |
3081 | int install) | |
3082 | { | |
3083 | int ret; | |
3084 | afi_t afi; | |
3085 | safi_t safi; | |
3086 | char buf[PREFIX_STRLEN]; | |
3087 | char buf1[ESI_STR_LEN]; | |
3088 | struct bgp_node *rd_rn, *rn; | |
3089 | struct bgp_table *table; | |
40381db7 | 3090 | struct bgp_path_info *pi; |
50f74cf1 | 3091 | |
3092 | afi = AFI_L2VPN; | |
3093 | safi = SAFI_EVPN; | |
3094 | ||
2bb9eff4 DS |
3095 | /* |
3096 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 3097 | * imported into this VRF. Note that we need to loop through all global |
3098 | * routes to determine which route matches the import rt on vrf | |
3099 | */ | |
3100 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3101 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3102 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 3103 | if (!table) |
3104 | continue; | |
3105 | ||
3106 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3107 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3108 | ||
6f94b685 DS |
3109 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3110 | pi = pi->next) { | |
2bb9eff4 DS |
3111 | /* |
3112 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 3113 | * this ES. |
3114 | */ | |
40381db7 DS |
3115 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3116 | && pi->type == ZEBRA_ROUTE_BGP | |
3117 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 3118 | continue; |
3119 | ||
2bb9eff4 DS |
3120 | if (!is_prefix_matching_for_es(evp, es)) |
3121 | continue; | |
50f74cf1 | 3122 | |
2bb9eff4 DS |
3123 | if (install) |
3124 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 3125 | bgp, es, evp, pi); |
2bb9eff4 DS |
3126 | else |
3127 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 3128 | bgp, es, evp, pi); |
2bb9eff4 DS |
3129 | |
3130 | if (ret) { | |
af4c2728 | 3131 | flog_err( |
e50f7cfd | 3132 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
3133 | "Failed to %s EVPN %s route in ESI %s", |
3134 | install ? "install" | |
3135 | : "uninstall", | |
3136 | prefix2str(evp, buf, | |
3137 | sizeof(buf)), | |
3138 | esi_to_str(&es->esi, buf1, | |
3139 | sizeof(buf1))); | |
3140 | return ret; | |
50f74cf1 | 3141 | } |
3142 | } | |
3143 | } | |
3144 | } | |
3145 | return 0; | |
3146 | } | |
3147 | ||
47bf0432 CS |
3148 | /* This API will scan evpn routes for checking attribute's rmac |
3149 | * macthes with bgp instance router mac. It avoid installing | |
3150 | * route into bgp vrf table and remote rmac in bridge table. | |
3151 | */ | |
3152 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
3153 | struct prefix_evpn *evp, | |
3154 | struct bgp_path_info *pi) | |
3155 | { | |
3156 | /* evpn route could have learnt prior to L3vni has come up, | |
3157 | * perform rmac check before installing route and | |
3158 | * remote router mac. | |
3159 | * The route will be removed from global bgp table once | |
3160 | * SVI comes up with MAC and stored in hash, triggers | |
3161 | * bgp_mac_rescan_all_evpn_tables. | |
3162 | */ | |
05864da7 | 3163 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
3164 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
3165 | char buf1[PREFIX_STRLEN]; | |
3166 | char attr_str[BUFSIZ] = {0}; | |
3167 | ||
3168 | bgp_dump_attr(pi->attr, attr_str, BUFSIZ); | |
3169 | ||
3170 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
3171 | __func__, bgp_vrf->vrf_id, | |
3172 | prefix2str(evp, buf1, sizeof(buf1)), | |
3173 | attr_str); | |
3174 | } | |
3175 | ||
3176 | return 1; | |
3177 | } | |
3178 | ||
3179 | return 0; | |
3180 | } | |
3181 | ||
5ba238b7 MK |
3182 | /* |
3183 | * Install or uninstall mac-ip routes are appropriate for this | |
3184 | * particular VRF. | |
3185 | */ | |
996c9314 | 3186 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3187 | { |
3188 | afi_t afi; | |
3189 | safi_t safi; | |
3190 | struct bgp_node *rd_rn, *rn; | |
3191 | struct bgp_table *table; | |
40381db7 | 3192 | struct bgp_path_info *pi; |
5ba238b7 MK |
3193 | int ret; |
3194 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 3195 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3196 | |
3197 | afi = AFI_L2VPN; | |
3198 | safi = SAFI_EVPN; | |
5e53dce3 T |
3199 | bgp_evpn = bgp_get_evpn(); |
3200 | if (!bgp_evpn) | |
5ba238b7 MK |
3201 | return -1; |
3202 | ||
3203 | /* Walk entire global routing table and evaluate routes which could be | |
3204 | * imported into this VRF. Note that we need to loop through all global | |
3205 | * routes to determine which route matches the import rt on vrf | |
3206 | */ | |
5e53dce3 | 3207 | for (rd_rn = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_rn; |
5ba238b7 | 3208 | rd_rn = bgp_route_next(rd_rn)) { |
67009e22 | 3209 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
3210 | if (!table) |
3211 | continue; | |
3212 | ||
3213 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3214 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3215 | ||
1eb88002 | 3216 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3217 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3218 | || evp->prefix.route_type | |
3219 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3220 | continue; |
3221 | ||
1eb88002 | 3222 | /* if not a mac+ip route skip this route */ |
3714a385 | 3223 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3224 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3225 | continue; |
3226 | ||
6f94b685 DS |
3227 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3228 | pi = pi->next) { | |
5ba238b7 | 3229 | /* Consider "valid" remote routes applicable for |
523cafc4 | 3230 | * this VRF. |
3231 | */ | |
40381db7 DS |
3232 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3233 | && pi->type == ZEBRA_ROUTE_BGP | |
3234 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3235 | continue; |
3236 | ||
40381db7 | 3237 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
3238 | if (bgp_evpn_route_rmac_self_check( |
3239 | bgp_vrf, evp, pi)) | |
3240 | continue; | |
3241 | ||
5ba238b7 | 3242 | if (install) |
996c9314 | 3243 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3244 | bgp_vrf, evp, pi); |
5ba238b7 | 3245 | else |
996c9314 | 3246 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3247 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3248 | |
3249 | if (ret) { | |
af4c2728 | 3250 | flog_err( |
e50f7cfd | 3251 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3252 | "Failed to %s EVPN %s route in VRF %s", |
3253 | install ? "install" | |
3254 | : "uninstall", | |
3255 | prefix2str(evp, buf, | |
3256 | sizeof(buf)), | |
996c9314 LB |
3257 | vrf_id_to_name( |
3258 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3259 | return ret; |
3260 | } | |
3261 | } | |
3262 | } | |
3263 | } | |
3264 | } | |
3265 | ||
3266 | return 0; | |
3267 | } | |
3268 | ||
128ea8ab | 3269 | /* |
3270 | * Install or uninstall routes of specified type that are appropriate for this | |
3271 | * particular VNI. | |
3272 | */ | |
d62a17ae | 3273 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3274 | struct bgpevpn *vpn, | |
3275 | bgp_evpn_route_type rtype, | |
3276 | int install) | |
3277 | { | |
0291c246 MK |
3278 | afi_t afi; |
3279 | safi_t safi; | |
3280 | struct bgp_node *rd_rn, *rn; | |
3281 | struct bgp_table *table; | |
40381db7 | 3282 | struct bgp_path_info *pi; |
0291c246 | 3283 | int ret; |
d62a17ae | 3284 | |
3285 | afi = AFI_L2VPN; | |
3286 | safi = SAFI_EVPN; | |
3287 | ||
3288 | /* Walk entire global routing table and evaluate routes which could be | |
3289 | * imported into this VPN. Note that we cannot just look at the routes | |
3290 | * for | |
3291 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3292 | * RD. | |
3293 | */ | |
3294 | /* EVPN routes are a 2-level table. */ | |
3295 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3296 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3297 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3298 | if (!table) |
3299 | continue; | |
3300 | ||
3301 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3302 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3303 | ||
3304 | if (evp->prefix.route_type != rtype) | |
3305 | continue; | |
3306 | ||
6f94b685 DS |
3307 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3308 | pi = pi->next) { | |
d62a17ae | 3309 | /* Consider "valid" remote routes applicable for |
3310 | * this VNI. */ | |
40381db7 DS |
3311 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3312 | && pi->type == ZEBRA_ROUTE_BGP | |
3313 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3314 | continue; |
3315 | ||
40381db7 | 3316 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3317 | if (install) |
3318 | ret = install_evpn_route_entry( | |
40381db7 | 3319 | bgp, vpn, evp, pi); |
d62a17ae | 3320 | else |
3321 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3322 | bgp, vpn, evp, pi); |
d62a17ae | 3323 | |
3324 | if (ret) { | |
af4c2728 | 3325 | flog_err( |
e50f7cfd | 3326 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3327 | "%u: Failed to %s EVPN %s route in VNI %u", |
3328 | bgp->vrf_id, | |
3329 | install ? "install" | |
3330 | : "uninstall", | |
3331 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3332 | ? "MACIP" | |
3333 | : "IMET", | |
3334 | vpn->vni); | |
3335 | return ret; | |
3336 | } | |
3337 | } | |
3338 | } | |
3339 | } | |
3340 | } | |
3341 | ||
3342 | return 0; | |
128ea8ab | 3343 | } |
3344 | ||
50f74cf1 | 3345 | /* Install any existing remote ES routes applicable for this ES into its routing |
3346 | * table. This is invoked when ES comes up. | |
3347 | */ | |
3348 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3349 | { | |
3350 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3351 | } | |
3352 | ||
3353 | ||
5ba238b7 | 3354 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3355 | * is invoked upon l3vni-add or l3vni import rt change |
3356 | */ | |
5ba238b7 MK |
3357 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3358 | { | |
3359 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3360 | return 0; | |
3361 | } | |
3362 | ||
128ea8ab | 3363 | /* |
3364 | * Install any existing remote routes applicable for this VNI into its | |
3365 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3366 | * RT is changed. | |
3367 | */ | |
d62a17ae | 3368 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3369 | { |
d62a17ae | 3370 | int ret; |
128ea8ab | 3371 | |
d62a17ae | 3372 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3373 | * for this VNI. | |
3374 | */ | |
3375 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3376 | 1); | |
3377 | if (ret) | |
3378 | return ret; | |
128ea8ab | 3379 | |
d62a17ae | 3380 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3381 | 1); | |
128ea8ab | 3382 | } |
3383 | ||
5ba238b7 MK |
3384 | /* uninstall routes from l3vni vrf. */ |
3385 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3386 | { | |
3387 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3388 | return 0; | |
3389 | } | |
3390 | ||
90e60aa7 | 3391 | /* |
3392 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3393 | * this is invoked is upon an import RT change. | |
3394 | */ | |
d62a17ae | 3395 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3396 | { |
d62a17ae | 3397 | int ret; |
90e60aa7 | 3398 | |
d62a17ae | 3399 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3400 | * applicable | |
3401 | * for this VNI. | |
3402 | */ | |
3403 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3404 | 0); | |
3405 | if (ret) | |
3406 | return ret; | |
90e60aa7 | 3407 | |
d62a17ae | 3408 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3409 | 0); | |
90e60aa7 | 3410 | } |
3411 | ||
50f74cf1 | 3412 | /* Install or unistall route in ES */ |
3413 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3414 | afi_t afi, safi_t safi, | |
3415 | struct prefix_evpn *evp, | |
40381db7 | 3416 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3417 | { |
3418 | int ret = 0; | |
3419 | char buf[ESI_STR_LEN]; | |
3420 | ||
3421 | if (install) | |
40381db7 | 3422 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3423 | else |
40381db7 | 3424 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3425 | |
3426 | if (ret) { | |
af4c2728 | 3427 | flog_err( |
e50f7cfd | 3428 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3429 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3430 | install ? "install" : "uninstall", "ES", | |
3431 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3432 | return ret; |
3433 | } | |
3434 | return 0; | |
3435 | } | |
3436 | ||
d3135ba3 | 3437 | /* |
3438 | * Install or uninstall route in matching VRFs (list). | |
3439 | */ | |
3440 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3441 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3442 | struct bgp_path_info *pi, |
d3135ba3 | 3443 | struct list *vrfs, int install) |
3444 | { | |
3445 | char buf[PREFIX2STR_BUFFER]; | |
3446 | struct bgp *bgp_vrf; | |
3447 | struct listnode *node, *nnode; | |
3448 | ||
90264d64 | 3449 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3450 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3451 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3452 | return 0; |
3453 | ||
90264d64 | 3454 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3455 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3456 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3457 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3458 | return 0; |
3459 | ||
d3135ba3 | 3460 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3461 | int ret; | |
3462 | ||
3463 | if (install) | |
40381db7 | 3464 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3465 | else |
996c9314 | 3466 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3467 | pi); |
d3135ba3 | 3468 | |
3469 | if (ret) { | |
e50f7cfd | 3470 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3471 | "%u: Failed to %s prefix %s in VRF %s", |
3472 | bgp_def->vrf_id, | |
3473 | install ? "install" : "uninstall", | |
3474 | prefix2str(evp, buf, sizeof(buf)), | |
3475 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3476 | return ret; |
3477 | } | |
3478 | } | |
3479 | ||
3480 | return 0; | |
3481 | } | |
3482 | ||
128ea8ab | 3483 | /* |
3484 | * Install or uninstall route in matching VNIs (list). | |
3485 | */ | |
d62a17ae | 3486 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3487 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3488 | struct bgp_path_info *pi, |
d62a17ae | 3489 | struct list *vnis, int install) |
128ea8ab | 3490 | { |
d62a17ae | 3491 | struct bgpevpn *vpn; |
3492 | struct listnode *node, *nnode; | |
128ea8ab | 3493 | |
d62a17ae | 3494 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3495 | int ret; | |
128ea8ab | 3496 | |
d62a17ae | 3497 | if (!is_vni_live(vpn)) |
3498 | continue; | |
128ea8ab | 3499 | |
d62a17ae | 3500 | if (install) |
40381db7 | 3501 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3502 | else |
40381db7 | 3503 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3504 | |
d62a17ae | 3505 | if (ret) { |
1c50c1c0 QY |
3506 | flog_err(EC_BGP_EVPN_FAIL, |
3507 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3508 | bgp->vrf_id, install ? "install" : "uninstall", | |
3509 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3510 | ? "MACIP" | |
3511 | : "IMET", | |
3512 | vpn->vni); | |
d62a17ae | 3513 | return ret; |
3514 | } | |
3515 | } | |
128ea8ab | 3516 | |
d62a17ae | 3517 | return 0; |
128ea8ab | 3518 | } |
3519 | ||
3520 | /* | |
50f74cf1 | 3521 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3522 | */ |
d62a17ae | 3523 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
4b7e6066 | 3524 | struct prefix *p, |
40381db7 | 3525 | struct bgp_path_info *pi, int import) |
d62a17ae | 3526 | { |
3527 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3528 | struct attr *attr = pi->attr; |
d62a17ae | 3529 | struct ecommunity *ecom; |
3530 | int i; | |
3531 | ||
3532 | assert(attr); | |
3533 | ||
50f74cf1 | 3534 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3535 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3536 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3537 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3538 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3539 | return 0; |
3540 | ||
3541 | /* If we don't have Route Target, nothing much to do. */ | |
3542 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3543 | return 0; | |
3544 | ||
3545 | ecom = attr->ecommunity; | |
3546 | if (!ecom || !ecom->size) | |
3547 | return -1; | |
3548 | ||
50f74cf1 | 3549 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3550 | * attached to the route */ | |
d62a17ae | 3551 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3552 | uint8_t *pnt; |
3553 | uint8_t type, sub_type; | |
d62a17ae | 3554 | struct ecommunity_val *eval; |
3555 | struct ecommunity_val eval_tmp; | |
996c9314 | 3556 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3557 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3558 | struct evpnes *es; |
d62a17ae | 3559 | |
3560 | /* Only deal with RTs */ | |
3561 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3562 | eval = (struct ecommunity_val *)(ecom->val | |
3563 | + (i * ECOMMUNITY_SIZE)); | |
3564 | type = *pnt++; | |
3565 | sub_type = *pnt++; | |
3566 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3567 | continue; | |
3568 | ||
50f74cf1 | 3569 | /* |
3570 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3571 | * IMET route is imported into VNI table. | |
3572 | * prefix routes are imported into VRF table. | |
523cafc4 | 3573 | */ |
50f74cf1 | 3574 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3575 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3576 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3577 | |
50f74cf1 | 3578 | irt = lookup_import_rt(bgp, eval); |
3579 | if (irt) | |
40381db7 DS |
3580 | install_uninstall_route_in_vnis( |
3581 | bgp, afi, safi, evp, pi, irt->vnis, | |
3582 | import); | |
50f74cf1 | 3583 | |
3584 | vrf_irt = lookup_vrf_import_rt(eval); | |
3585 | if (vrf_irt) | |
40381db7 DS |
3586 | install_uninstall_route_in_vrfs( |
3587 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3588 | import); | |
50f74cf1 | 3589 | |
3590 | /* Also check for non-exact match. | |
3591 | * In this, we mask out the AS and | |
3592 | * only check on the local-admin sub-field. | |
3593 | * This is to facilitate using | |
3594 | * VNI as the RT for EBGP peering too. | |
3595 | */ | |
3596 | irt = NULL; | |
3597 | vrf_irt = NULL; | |
3598 | if (type == ECOMMUNITY_ENCODE_AS | |
3599 | || type == ECOMMUNITY_ENCODE_AS4 | |
3600 | || type == ECOMMUNITY_ENCODE_IP) { | |
3601 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3602 | mask_ecom_global_admin(&eval_tmp, eval); | |
3603 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3604 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3605 | } | |
3606 | ||
3607 | if (irt) | |
40381db7 DS |
3608 | install_uninstall_route_in_vnis( |
3609 | bgp, afi, safi, evp, pi, irt->vnis, | |
3610 | import); | |
50f74cf1 | 3611 | if (vrf_irt) |
40381db7 DS |
3612 | install_uninstall_route_in_vrfs( |
3613 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3614 | import); | |
50f74cf1 | 3615 | } |
3616 | ||
3617 | /* es route is imported into the es table */ | |
3618 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3619 | ||
3620 | /* we will match based on the entire esi to avoid | |
3621 | * imoort of an es route for esi2 into esi1 | |
3622 | */ | |
3623 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3624 | if (es && is_es_local(es)) | |
40381db7 DS |
3625 | install_uninstall_route_in_es( |
3626 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3627 | } |
d62a17ae | 3628 | } |
3629 | ||
3630 | return 0; | |
128ea8ab | 3631 | } |
3632 | ||
2bb9eff4 DS |
3633 | /* |
3634 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3635 | * routes | |
3636 | */ | |
80b140af MK |
3637 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3638 | { | |
5fd9c12b KA |
3639 | /* Delete ipv4 default route and withdraw from peers */ |
3640 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3641 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3642 | SAFI_UNICAST, false); | |
3643 | ||
80b140af | 3644 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3645 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3646 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3647 | |
5fd9c12b KA |
3648 | /* Delete ipv6 default route and withdraw from peers */ |
3649 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3650 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3651 | SAFI_UNICAST, false); | |
3652 | ||
80b140af | 3653 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3654 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3655 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3656 | } |
3657 | ||
2bb9eff4 DS |
3658 | /* |
3659 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3660 | * routes | |
3661 | */ | |
5394a276 | 3662 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3663 | { |
5394a276 CS |
3664 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3665 | ||
3666 | bgp_evpn = bgp_get_evpn(); | |
3667 | if (!bgp_evpn) | |
3668 | return; | |
3669 | ||
80b140af | 3670 | /* update all ipv4 routes */ |
fdf19f06 MK |
3671 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3672 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3673 | |
5fd9c12b KA |
3674 | /* update ipv4 default route and withdraw from peers */ |
3675 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3676 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3677 | SAFI_UNICAST, true); | |
3678 | ||
80b140af | 3679 | /* update all ipv6 routes */ |
fdf19f06 MK |
3680 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3681 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3682 | |
3683 | /* update ipv6 default route and withdraw from peers */ | |
3684 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3685 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3686 | SAFI_UNICAST, true); | |
3687 | ||
80b140af MK |
3688 | } |
3689 | ||
676f83b9 | 3690 | /* |
3691 | * update and advertise local routes for a VRF as type-5 routes. | |
3692 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3693 | * done in the global route table using the routes which already exist in the | |
3694 | * VRF routing table | |
3695 | */ | |
80b140af | 3696 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3697 | { |
80b140af MK |
3698 | /* skip if the RD is configured */ |
3699 | if (is_vrf_rd_configured(bgp_vrf)) | |
3700 | return; | |
3701 | ||
3702 | /* derive the RD for the VRF based on new router-id */ | |
3703 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3704 | ||
3705 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3706 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3707 | } |
3708 | ||
3709 | /* | |
3710 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3711 | * This is invoked upon VRF RD change. The processing is done only from global | |
3712 | * table. | |
3713 | */ | |
80b140af | 3714 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3715 | { |
80b140af MK |
3716 | /* skip if the RD is configured */ |
3717 | if (is_vrf_rd_configured(bgp_vrf)) | |
3718 | return; | |
3719 | ||
3720 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3721 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3722 | } |
3723 | ||
90e60aa7 | 3724 | /* |
3725 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3726 | * change. Note that the processing is done only on the global route table | |
3727 | * using routes that already exist in the per-VNI table. | |
3728 | */ | |
d62a17ae | 3729 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3730 | { | |
3731 | struct prefix_evpn p; | |
3732 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3733 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3734 | struct attr *attr; |
3735 | afi_t afi = AFI_L2VPN; | |
3736 | safi_t safi = SAFI_EVPN; | |
3737 | ||
3738 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3739 | * attributes to create and advertise the type-3 route for this VNI | |
3740 | * in the global table. | |
fd069644 DS |
3741 | * |
3742 | * RT-3 only if doing head-end replication | |
d62a17ae | 3743 | */ |
833b8a50 AK |
3744 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3745 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
3746 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
3747 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3748 | if (!rn) /* unexpected */ | |
3749 | return 0; | |
6f94b685 | 3750 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3751 | if (pi->peer == bgp->peer_self && |
3752 | pi->type == ZEBRA_ROUTE_BGP | |
3753 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3754 | break; | |
3755 | if (!pi) /* unexpected */ | |
3756 | return 0; | |
3757 | attr = pi->attr; | |
d62a17ae | 3758 | |
fd069644 DS |
3759 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3760 | (struct prefix *)&p, &vpn->prd); | |
3761 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3762 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3763 | |
fd069644 DS |
3764 | /* Schedule for processing and unlock node. */ |
3765 | bgp_process(bgp, global_rn, afi, safi); | |
3766 | bgp_unlock_node(global_rn); | |
3767 | } | |
d62a17ae | 3768 | |
3769 | /* Now, walk this VNI's route table and use the route and its attribute | |
3770 | * to create and schedule route in global table. | |
3771 | */ | |
3772 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3773 | rn = bgp_route_next(rn)) { | |
3774 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3775 | ||
3776 | /* Identify MAC-IP local routes. */ | |
3777 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3778 | continue; | |
3779 | ||
6f94b685 | 3780 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3781 | if (pi->peer == bgp->peer_self |
3782 | && pi->type == ZEBRA_ROUTE_BGP | |
3783 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3784 | break; |
40381db7 | 3785 | if (!pi) |
d62a17ae | 3786 | continue; |
3787 | ||
3788 | /* Create route in global routing table using this route entry's | |
3789 | * attribute. | |
3790 | */ | |
40381db7 | 3791 | attr = pi->attr; |
d62a17ae | 3792 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3793 | (struct prefix *)evp, &vpn->prd); | |
3794 | assert(global_rn); | |
3795 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3796 | &global_pi, 0, |
f07e1c99 | 3797 | mac_mobility_seqnum(attr)); |
d62a17ae | 3798 | |
3799 | /* Schedule for processing and unlock node. */ | |
3800 | bgp_process(bgp, global_rn, afi, safi); | |
3801 | bgp_unlock_node(global_rn); | |
3802 | } | |
3803 | ||
3804 | return 0; | |
90e60aa7 | 3805 | } |
3806 | ||
3807 | /* | |
3808 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3809 | * table. Invoked upon router-id change. | |
3810 | */ | |
d62a17ae | 3811 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3812 | { |
d62a17ae | 3813 | int ret; |
3814 | struct prefix_evpn p; | |
3815 | struct bgp_node *global_rn; | |
40381db7 | 3816 | struct bgp_path_info *pi; |
d62a17ae | 3817 | afi_t afi = AFI_L2VPN; |
3818 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3819 | |
d62a17ae | 3820 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3821 | * for this VNI - from the global table. | |
3822 | */ | |
3823 | ret = delete_global_type2_routes(bgp, vpn); | |
3824 | if (ret) | |
3825 | return ret; | |
90e60aa7 | 3826 | |
d62a17ae | 3827 | /* Remove type-3 route for this VNI from global table. */ |
3828 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3829 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3830 | (struct prefix *)&p, &vpn->prd); | |
3831 | if (global_rn) { | |
3832 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3833 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3834 | |
d62a17ae | 3835 | /* Schedule for processing - withdraws to peers happen from |
3836 | * this table. | |
3837 | */ | |
40381db7 | 3838 | if (pi) |
d62a17ae | 3839 | bgp_process(bgp, global_rn, afi, safi); |
3840 | bgp_unlock_node(global_rn); | |
3841 | } | |
90e60aa7 | 3842 | |
d62a17ae | 3843 | return 0; |
90e60aa7 | 3844 | } |
3845 | ||
2d48ee25 | 3846 | /* |
3847 | * Handle router-id change. Update and advertise local routes corresponding | |
3848 | * to this VNI from peers. Note that this is invoked after updating the | |
3849 | * router-id. The routes in the per-VNI table are used to create routes in | |
3850 | * the global table and schedule them. | |
3851 | */ | |
e3b78da8 | 3852 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3853 | { |
e3b78da8 | 3854 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3855 | |
d62a17ae | 3856 | /* Skip VNIs with configured RD. */ |
3857 | if (is_rd_configured(vpn)) | |
3858 | return; | |
2d48ee25 | 3859 | |
d62a17ae | 3860 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3861 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3862 | } |
3863 | ||
3864 | /* | |
3865 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3866 | * to this VNI from peers. Note that this is invoked prior to updating | |
3867 | * the router-id and is done only on the global route table, the routes | |
3868 | * are needed in the per-VNI table to re-advertise with new router id. | |
3869 | */ | |
e3b78da8 | 3870 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3871 | { |
e3b78da8 | 3872 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3873 | |
d62a17ae | 3874 | /* Skip VNIs with configured RD. */ |
3875 | if (is_rd_configured(vpn)) | |
3876 | return; | |
2d48ee25 | 3877 | |
d62a17ae | 3878 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3879 | } |
3880 | ||
fd069644 DS |
3881 | /* |
3882 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3883 | * This is invoked upon flooding mode changing to head-end replication. | |
3884 | */ | |
e3b78da8 | 3885 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3886 | { |
e3b78da8 | 3887 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3888 | struct bgp *bgp = data; |
3889 | struct prefix_evpn p; | |
3890 | ||
833b8a50 AK |
3891 | if (!vpn || !is_vni_live(vpn) || |
3892 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3893 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3894 | return; |
3895 | ||
3896 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3897 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3898 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3899 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3900 | } | |
3901 | ||
3902 | /* | |
3903 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3904 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3905 | */ | |
e3b78da8 | 3906 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3907 | { |
e3b78da8 | 3908 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3909 | struct bgp *bgp = data; |
3910 | struct prefix_evpn p; | |
3911 | ||
3912 | if (!vpn || !is_vni_live(vpn)) | |
3913 | return; | |
3914 | ||
3915 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3916 | delete_evpn_route(bgp, vpn, &p); | |
3917 | } | |
3918 | ||
128ea8ab | 3919 | /* |
3920 | * Process received EVPN type-2 route (advertise or withdraw). | |
3921 | */ | |
d62a17ae | 3922 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3923 | struct attr *attr, uint8_t *pfx, int psize, |
3924 | uint32_t addpath_id) | |
d62a17ae | 3925 | { |
3926 | struct prefix_rd prd; | |
3927 | struct prefix_evpn p; | |
554cd77a | 3928 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3929 | uint8_t ipaddr_len; |
3930 | uint8_t macaddr_len; | |
b57ba6d2 | 3931 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3932 | uint32_t num_labels = 0; |
554cd77a | 3933 | uint32_t eth_tag; |
d62a17ae | 3934 | int ret; |
3935 | ||
3936 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3937 | * additional 3 bytes if there is a second label (VNI): | |
3938 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3939 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3940 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3941 | */ | |
3942 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3943 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3944 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3945 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3946 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3947 | return -1; |
3948 | } | |
3949 | ||
554cd77a VB |
3950 | memset(&evpn, 0, sizeof(evpn)); |
3951 | ||
d62a17ae | 3952 | /* Make prefix_rd */ |
3953 | prd.family = AF_UNSPEC; | |
3954 | prd.prefixlen = 64; | |
3955 | memcpy(&prd.val, pfx, 8); | |
3956 | pfx += 8; | |
3957 | ||
3958 | /* Make EVPN prefix. */ | |
3959 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3960 | p.family = AF_EVPN; |
50f74cf1 | 3961 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3962 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3963 | ||
554cd77a VB |
3964 | /* Copy Ethernet Seg Identifier */ |
3965 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3966 | pfx += ESI_LEN; | |
d62a17ae | 3967 | |
554cd77a VB |
3968 | /* Copy Ethernet Tag */ |
3969 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3970 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3971 | pfx += 4; |
3972 | ||
3973 | /* Get the MAC Addr len */ | |
3974 | macaddr_len = *pfx++; | |
3975 | ||
3976 | /* Get the MAC Addr */ | |
28328ea9 | 3977 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3978 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3979 | pfx += ETH_ALEN; |
d62a17ae | 3980 | } else { |
af4c2728 | 3981 | flog_err( |
e50f7cfd | 3982 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3983 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3984 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3985 | return -1; | |
3986 | } | |
3987 | ||
3988 | ||
3989 | /* Get the IP. */ | |
3990 | ipaddr_len = *pfx++; | |
3991 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3992 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3993 | flog_err( |
e50f7cfd | 3994 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3995 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3996 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3997 | return -1; | |
3998 | } | |
3999 | ||
4000 | if (ipaddr_len) { | |
4001 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4002 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4003 | ? IPADDR_V4 |
4004 | : IPADDR_V6; | |
3714a385 | 4005 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 4006 | } |
4007 | pfx += ipaddr_len; | |
4008 | ||
b57ba6d2 MK |
4009 | /* Get the VNI(s). Stored as bytes here. */ |
4010 | num_labels++; | |
4011 | memset(label, 0, sizeof(label)); | |
4012 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 4013 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
4014 | psize -= (33 + ipaddr_len); |
4015 | /* Do we have a second VNI? */ | |
4016 | if (psize) { | |
4017 | num_labels++; | |
4018 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4019 | /* |
4020 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4021 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
4022 | * the next field | |
6b11bd8d | 4023 | */ |
b57ba6d2 | 4024 | } |
d62a17ae | 4025 | |
4026 | /* Process the route. */ | |
4027 | if (attr) | |
4028 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4029 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4030 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 4031 | else |
4032 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4033 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4034 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 4035 | return ret; |
128ea8ab | 4036 | } |
4037 | ||
4038 | /* | |
4039 | * Process received EVPN type-3 route (advertise or withdraw). | |
4040 | */ | |
d62a17ae | 4041 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4042 | struct attr *attr, uint8_t *pfx, int psize, |
4043 | uint32_t addpath_id) | |
d62a17ae | 4044 | { |
4045 | struct prefix_rd prd; | |
4046 | struct prefix_evpn p; | |
d7c0a89a | 4047 | uint8_t ipaddr_len; |
554cd77a | 4048 | uint32_t eth_tag; |
d62a17ae | 4049 | int ret; |
4050 | ||
4051 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4052 | * IP len (1) and IP (4 or 16). | |
4053 | */ | |
4054 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4055 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4056 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4057 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4058 | return -1; |
4059 | } | |
4060 | ||
7fd077aa | 4061 | /* If PMSI is present, log if it is anything other than IR. |
4062 | * Note: We just simply ignore the values as it is not clear if | |
4063 | * doing anything else is better. | |
4064 | */ | |
4065 | if (attr && | |
4066 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
4067 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
4068 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4069 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
4070 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4071 | peer->bgp->vrf_id, peer->host, | |
4072 | attr->pmsi_tnl_type); | |
7fd077aa | 4073 | } |
4074 | } | |
4075 | ||
d62a17ae | 4076 | /* Make prefix_rd */ |
4077 | prd.family = AF_UNSPEC; | |
4078 | prd.prefixlen = 64; | |
4079 | memcpy(&prd.val, pfx, 8); | |
4080 | pfx += 8; | |
4081 | ||
4082 | /* Make EVPN prefix. */ | |
4083 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4084 | p.family = AF_EVPN; |
50f74cf1 | 4085 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4086 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4087 | ||
554cd77a VB |
4088 | /* Copy Ethernet Tag */ |
4089 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4090 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4091 | pfx += 4; |
4092 | ||
4093 | /* Get the IP. */ | |
4094 | ipaddr_len = *pfx++; | |
4095 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4096 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4097 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4098 | } else { |
af4c2728 | 4099 | flog_err( |
e50f7cfd | 4100 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4101 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4102 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4103 | return -1; | |
4104 | } | |
4105 | ||
4106 | /* Process the route. */ | |
4107 | if (attr) | |
4108 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4109 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4110 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4111 | else |
4112 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4113 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4114 | &prd, NULL, 0, NULL); |
d62a17ae | 4115 | return ret; |
128ea8ab | 4116 | } |
4117 | ||
50f74cf1 | 4118 | /* |
4119 | * Process received EVPN type-4 route (advertise or withdraw). | |
4120 | */ | |
4121 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
4122 | struct attr *attr, uint8_t *pfx, int psize, | |
4123 | uint32_t addpath_id) | |
4124 | { | |
4125 | int ret; | |
4126 | esi_t esi; | |
4127 | uint8_t ipaddr_len; | |
4128 | struct in_addr vtep_ip; | |
4129 | struct prefix_rd prd; | |
4130 | struct prefix_evpn p; | |
4131 | ||
4132 | /* Type-4 route should be either 23 or 35 bytes | |
4133 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
4134 | */ | |
4135 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 4136 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4137 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
4138 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 4139 | return -1; |
4140 | } | |
4141 | ||
4142 | /* Make prefix_rd */ | |
4143 | prd.family = AF_UNSPEC; | |
4144 | prd.prefixlen = 64; | |
4145 | memcpy(&prd.val, pfx, 8); | |
4146 | pfx += 8; | |
4147 | ||
4148 | /* get the ESI */ | |
4149 | memcpy(&esi, pfx, ESI_BYTES); | |
4150 | pfx += ESI_BYTES; | |
4151 | ||
4152 | ||
4153 | /* Get the IP. */ | |
4154 | ipaddr_len = *pfx++; | |
4155 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
4156 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
4157 | } else { | |
af4c2728 | 4158 | flog_err( |
e50f7cfd | 4159 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 4160 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
4161 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4162 | return -1; | |
4163 | } | |
4164 | ||
4165 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
4166 | /* Process the route. */ | |
4167 | if (attr) { | |
4168 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4169 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4170 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 4171 | } else { |
50f74cf1 | 4172 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4173 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4174 | &prd, NULL, 0, NULL); | |
4175 | } | |
4176 | return ret; | |
4177 | } | |
4178 | ||
4179 | ||
128ea8ab | 4180 | /* |
4181 | * Process received EVPN type-5 route (advertise or withdraw). | |
4182 | */ | |
d62a17ae | 4183 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4184 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4185 | uint32_t addpath_id) |
d62a17ae | 4186 | { |
4187 | struct prefix_rd prd; | |
4188 | struct prefix_evpn p; | |
4189 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4190 | uint8_t ippfx_len; |
4191 | uint32_t eth_tag; | |
b57ba6d2 | 4192 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4193 | int ret; |
4194 | ||
4195 | /* Type-5 route should be 34 or 58 bytes: | |
4196 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4197 | * GW (4 or 16) and VNI (3). | |
4198 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4199 | */ | |
4200 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4201 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4202 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4203 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4204 | return -1; |
4205 | } | |
4206 | ||
4207 | /* Make prefix_rd */ | |
4208 | prd.family = AF_UNSPEC; | |
4209 | prd.prefixlen = 64; | |
4210 | memcpy(&prd.val, pfx, 8); | |
4211 | pfx += 8; | |
4212 | ||
4213 | /* Make EVPN prefix. */ | |
4214 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4215 | p.family = AF_EVPN; |
50f74cf1 | 4216 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4217 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4218 | ||
4219 | /* Additional information outside of prefix - ESI and GW IP */ | |
4220 | memset(&evpn, 0, sizeof(evpn)); | |
4221 | ||
4222 | /* Fetch ESI */ | |
4223 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
4224 | pfx += 10; | |
4225 | ||
4226 | /* Fetch Ethernet Tag. */ | |
4227 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4228 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4229 | pfx += 4; |
4230 | ||
4231 | /* Fetch IP prefix length. */ | |
4232 | ippfx_len = *pfx++; | |
4233 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4234 | flog_err( |
e50f7cfd | 4235 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4236 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4237 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4238 | return -1; | |
4239 | } | |
3714a385 | 4240 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4241 | |
4242 | /* Determine IPv4 or IPv6 prefix */ | |
4243 | /* Since the address and GW are from the same family, this just becomes | |
4244 | * a simple check on the total size. | |
4245 | */ | |
4246 | if (psize == 34) { | |
3714a385 | 4247 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4248 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4249 | pfx += 4; |
4250 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4251 | pfx += 4; | |
d62a17ae | 4252 | } else { |
3714a385 | 4253 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4254 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4255 | pfx += 16; |
4256 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4257 | pfx += 16; | |
d62a17ae | 4258 | } |
4259 | ||
b57ba6d2 MK |
4260 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4261 | memset(&label, 0, sizeof(label)); | |
4262 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4263 | |
4264 | /* | |
4265 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4266 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4267 | * field | |
6b11bd8d | 4268 | */ |
d62a17ae | 4269 | |
4270 | /* Process the route. */ | |
f007bdce | 4271 | if (attr) |
d62a17ae | 4272 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4273 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4274 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4275 | else |
4276 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4277 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4278 | &prd, &label, 1, &evpn); |
d62a17ae | 4279 | |
4280 | return ret; | |
4281 | } | |
4282 | ||
4283 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 4284 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 4285 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 4286 | { |
4287 | int len; | |
4288 | char temp[16]; | |
4289 | struct evpn_addr *p_evpn_p; | |
4290 | ||
4291 | memset(&temp, 0, 16); | |
b03b8898 | 4292 | if (p->family != AF_EVPN) |
d62a17ae | 4293 | return; |
4294 | p_evpn_p = &(p->u.prefix_evpn); | |
4295 | ||
e9fc2840 | 4296 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4297 | IP and GW-IP have to be both ipv4 or ipv6 |
4298 | */ | |
3714a385 | 4299 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4300 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4301 | else |
e9fc2840 | 4302 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4303 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4304 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4305 | stream_put(s, prd->val, 8); | |
0af35d90 | 4306 | if (attr) |
d62a17ae | 4307 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4308 | else | |
4309 | stream_put(s, &temp, 10); | |
3714a385 | 4310 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4311 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4312 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4313 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4314 | else |
3714a385 | 4315 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4316 | if (attr) { |
3714a385 | 4317 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4318 | stream_put_ipv4(s, |
4319 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4320 | else | |
4321 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4322 | } else { | |
3714a385 | 4323 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4324 | stream_put_ipv4(s, 0); |
4325 | else | |
4326 | stream_put(s, &temp, 16); | |
4327 | } | |
4328 | ||
b57ba6d2 | 4329 | if (num_labels) |
d62a17ae | 4330 | stream_put(s, label, 3); |
4331 | else | |
4332 | stream_put3(s, 0); | |
128ea8ab | 4333 | } |
4334 | ||
4335 | /* | |
4336 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4337 | */ | |
e3b78da8 | 4338 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4339 | { |
e3b78da8 | 4340 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4341 | |
d62a17ae | 4342 | /* Remove EVPN routes and schedule for processing. */ |
4343 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4344 | |
d62a17ae | 4345 | /* Clear "live" flag and see if hash needs to be freed. */ |
4346 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4347 | if (!is_vni_configured(vpn)) | |
4348 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4349 | } |
4350 | ||
4351 | /* | |
4352 | * Free a VNI entry; iterator function called during cleanup. | |
4353 | */ | |
e3b78da8 | 4354 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4355 | { |
e3b78da8 | 4356 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4357 | |
d62a17ae | 4358 | delete_all_vni_routes(bgp, vpn); |
4359 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4360 | } |
4361 | ||
c581d8b0 MK |
4362 | /* |
4363 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4364 | */ | |
4365 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4366 | { | |
5e53dce3 | 4367 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4368 | |
c581d8b0 | 4369 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4370 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4371 | ||
4372 | /* Map RT to VRF */ | |
5e53dce3 T |
4373 | bgp_evpn = bgp_get_evpn(); |
4374 | if (!bgp_evpn) | |
10ebe1ab MK |
4375 | return; |
4376 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4377 | } |
4378 | ||
4379 | /* | |
4380 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4381 | */ | |
4382 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4383 | { | |
4384 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4385 | } | |
4386 | ||
4387 | /* | |
4388 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4389 | */ | |
4390 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4391 | { | |
4392 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4393 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4394 | } | |
4395 | ||
4396 | /* | |
4397 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4398 | */ | |
4399 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4400 | { | |
4401 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4402 | } | |
128ea8ab | 4403 | |
f1f8b53c MK |
4404 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4405 | { | |
5e53dce3 | 4406 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4407 | struct listnode *node = NULL; |
4408 | struct bgpevpn *vpn = NULL; | |
4409 | ||
5e53dce3 T |
4410 | bgp_evpn = bgp_get_evpn(); |
4411 | if (!bgp_evpn) | |
f1f8b53c MK |
4412 | return; |
4413 | ||
4992b4ae MK |
4414 | /* update all type-5 routes */ |
4415 | update_advertise_vrf_routes(bgp_vrf); | |
4416 | ||
4417 | /* update all type-2 routes */ | |
f1f8b53c | 4418 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4419 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4420 | } |
4421 | ||
bf1061d8 VB |
4422 | /* |
4423 | * Handle autort change for a given VNI. | |
4424 | */ | |
e3b78da8 | 4425 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4426 | { |
e3b78da8 | 4427 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4428 | |
bf1061d8 VB |
4429 | if (!is_import_rt_configured(vpn)) { |
4430 | if (is_vni_live(vpn)) | |
4431 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4432 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4433 | list_delete_all_node(vpn->import_rtl); |
4434 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4435 | if (is_vni_live(vpn)) | |
4436 | bgp_evpn_install_routes(bgp, vpn); | |
4437 | } | |
4438 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4439 | list_delete_all_node(vpn->export_rtl); |
4440 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4441 | if (is_vni_live(vpn)) | |
4442 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4443 | } | |
4444 | } | |
4445 | ||
128ea8ab | 4446 | /* |
4447 | * Public functions. | |
4448 | */ | |
4449 | ||
5424b7ba | 4450 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4451 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4452 | afi_t afi, safi_t safi) |
4453 | { | |
4454 | int ret = 0; | |
4455 | struct prefix_evpn evp; | |
4456 | char buf[PREFIX_STRLEN]; | |
4457 | ||
31310b25 | 4458 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4459 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4460 | if (ret) { | |
af4c2728 | 4461 | flog_err( |
e50f7cfd | 4462 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4463 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4464 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4465 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4466 | } |
4467 | } | |
4468 | ||
342dd0c6 | 4469 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4470 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4471 | { |
4472 | struct bgp_table *table = NULL; | |
4473 | struct bgp_node *rn = NULL; | |
40381db7 | 4474 | struct bgp_path_info *pi; |
342dd0c6 | 4475 | |
053905d2 | 4476 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4477 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
f106e3a7 | 4478 | /* Only care about "selected" routes. Also ensure that |
4479 | * these are routes that are injectable into EVPN. | |
4480 | */ | |
25f2ca53 | 4481 | /* TODO: Support for AddPath for EVPN. */ |
6f94b685 | 4482 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4483 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4484 | && is_route_injectable_into_evpn(pi)) { |
25f2ca53 | 4485 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4486 | afi, safi); | |
4487 | break; | |
4488 | } | |
4489 | } | |
4490 | } | |
5424b7ba | 4491 | } |
342dd0c6 | 4492 | |
5fd9c12b KA |
4493 | /* |
4494 | * evpn - enable advertisement of default g/w | |
4495 | */ | |
4496 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4497 | safi_t safi, bool add) | |
4498 | { | |
4499 | struct prefix ip_prefix; | |
4500 | ||
4501 | /* form the default prefix 0.0.0.0/0 */ | |
4502 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4503 | ip_prefix.family = afi2family(afi); | |
4504 | ||
4505 | if (add) { | |
4506 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4507 | NULL, afi, safi); | |
4508 | } else { | |
4509 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4510 | afi, safi); | |
4511 | } | |
4512 | } | |
4513 | ||
4514 | ||
2f69f6d3 | 4515 | /* |
4516 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4517 | * to this function correspond to those of the source IP prefix (best | |
4518 | * path in the case of the attr. In the case of a local prefix (when we | |
4519 | * are advertising local subnets), the src_attr will be NULL. | |
4520 | */ | |
31310b25 | 4521 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4522 | struct attr *src_attr, afi_t afi, |
4523 | safi_t safi) | |
5424b7ba MK |
4524 | { |
4525 | int ret = 0; | |
4526 | struct prefix_evpn evp; | |
4527 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4528 | |
31310b25 | 4529 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4530 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4531 | if (ret) | |
e50f7cfd | 4532 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4533 | "%u: Failed to create type-5 route for prefix %s", |
4534 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4535 | } |
4536 | ||
2f69f6d3 | 4537 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4538 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4539 | * advertisement is enabled. | |
4540 | */ | |
996c9314 LB |
4541 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4542 | safi_t safi) | |
342dd0c6 | 4543 | { |
4544 | struct bgp_table *table = NULL; | |
4545 | struct bgp_node *rn = NULL; | |
40381db7 | 4546 | struct bgp_path_info *pi; |
342dd0c6 | 4547 | |
053905d2 | 4548 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4549 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4550 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4551 | * attribute. Also, ensure that the route is injectable |
4552 | * into EVPN. | |
2f69f6d3 | 4553 | * TODO: Support for AddPath for EVPN. |
4554 | */ | |
6f94b685 | 4555 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4556 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4557 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4558 | |
4559 | /* apply the route-map */ | |
4560 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4561 | route_map_result_t ret; |
53c84f78 | 4562 | |
996c9314 LB |
4563 | ret = route_map_apply( |
4564 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4565 | .map, | |
40381db7 | 4566 | &rn->p, RMAP_BGP, pi); |
53c84f78 MK |
4567 | if (ret == RMAP_DENYMATCH) |
4568 | continue; | |
4569 | } | |
996c9314 | 4570 | bgp_evpn_advertise_type5_route( |
40381db7 | 4571 | bgp_vrf, &rn->p, pi->attr, afi, safi); |
2f69f6d3 | 4572 | break; |
4573 | } | |
4574 | } | |
31310b25 | 4575 | } |
342dd0c6 | 4576 | } |
4577 | ||
996c9314 | 4578 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4579 | { |
4580 | struct listnode *node, *nnode, *node_to_del; | |
4581 | struct ecommunity *ecom, *ecom_auto; | |
4582 | struct ecommunity_val eval; | |
4583 | ||
bf1061d8 VB |
4584 | if (bgp->advertise_autort_rfc8365) |
4585 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4586 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4587 | ||
4588 | ecom_auto = ecommunity_new(); | |
4589 | ecommunity_add_val(ecom_auto, &eval); | |
4590 | node_to_del = NULL; | |
4591 | ||
4592 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4593 | if (ecommunity_match(ecom, ecom_auto)) { | |
4594 | ecommunity_free(&ecom); | |
4595 | node_to_del = node; | |
4596 | } | |
4597 | } | |
4598 | ||
4599 | if (node_to_del) | |
4600 | list_delete_node(rtl, node_to_del); | |
4601 | ||
4602 | ecommunity_free(&ecom_auto); | |
4603 | } | |
4604 | ||
4605 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4606 | struct ecommunity *ecomadd) |
c581d8b0 | 4607 | { |
5ba238b7 | 4608 | /* uninstall routes from vrf */ |
3d0b43d7 | 4609 | if (is_l3vni_live(bgp_vrf)) |
4610 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4611 | |
4612 | /* Cleanup the RT to VRF mapping */ | |
4613 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4614 | ||
c581d8b0 MK |
4615 | /* Remove auto generated RT */ |
4616 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4617 | ||
4618 | /* Add the newly configured RT to RT list */ | |
4619 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4620 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4621 | ||
3d0b43d7 | 4622 | /* map VRF to its RTs and install routes matching the new RTs */ |
4623 | if (is_l3vni_live(bgp_vrf)) { | |
4624 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4625 | install_routes_for_vrf(bgp_vrf); | |
4626 | } | |
c581d8b0 MK |
4627 | } |
4628 | ||
4629 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4630 | struct ecommunity *ecomdel) | |
4631 | { | |
4632 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4633 | struct ecommunity *ecom = NULL; | |
4634 | ||
5ba238b7 | 4635 | /* uninstall routes from vrf */ |
3d0b43d7 | 4636 | if (is_l3vni_live(bgp_vrf)) |
4637 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4638 | |
4639 | /* Cleanup the RT to VRF mapping */ | |
4640 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4641 | ||
c581d8b0 MK |
4642 | /* remove the RT from the RT list */ |
4643 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4644 | if (ecommunity_match(ecom, ecomdel)) { | |
4645 | ecommunity_free(&ecom); | |
4646 | node_to_del = node; | |
4647 | break; | |
4648 | } | |
4649 | } | |
4650 | ||
4651 | if (node_to_del) | |
4652 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4653 | ||
b3a4db3d | 4654 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4655 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4656 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4657 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4658 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4659 | } | |
4660 | ||
3d0b43d7 | 4661 | /* map VRFs to its RTs and install routes matching this new RT */ |
4662 | if (is_l3vni_live(bgp_vrf)) { | |
4663 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4664 | install_routes_for_vrf(bgp_vrf); | |
4665 | } | |
c581d8b0 MK |
4666 | } |
4667 | ||
4668 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4669 | struct ecommunity *ecomadd) | |
4670 | { | |
4671 | /* remove auto-generated RT */ | |
4672 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4673 | ||
4674 | /* Add the new RT to the RT list */ | |
4675 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4676 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4677 | ||
f1f8b53c | 4678 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4679 | } |
4680 | ||
4681 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4682 | struct ecommunity *ecomdel) | |
4683 | { | |
4684 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4685 | struct ecommunity *ecom = NULL; | |
4686 | ||
4687 | /* Remove the RT from the RT list */ | |
4688 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4689 | if (ecommunity_match(ecom, ecomdel)) { | |
4690 | ecommunity_free(&ecom); | |
4691 | node_to_del = node; | |
4692 | break; | |
4693 | } | |
4694 | } | |
4695 | ||
4696 | if (node_to_del) | |
4697 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4698 | ||
1525e99f DS |
4699 | /* |
4700 | * Temporary assert to make SA happy. | |
4701 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4702 | * which means that SA is going to complain about | |
4703 | * the list_isempty call, which doesn't NULL check. | |
4704 | * So until we get this situation cleaned up, here | |
4705 | * we are. | |
4706 | */ | |
4707 | assert(bgp_vrf->vrf_export_rtl); | |
4708 | ||
c581d8b0 | 4709 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4710 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4711 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4712 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4713 | } | |
4714 | ||
f1f8b53c | 4715 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4716 | } |
4717 | ||
2d48ee25 | 4718 | /* |
4719 | * Handle change to BGP router id. This is invoked twice by the change | |
4720 | * handler, first before the router id has been changed and then after | |
4721 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4722 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4723 | * will result in the routes being re-advertised. |
4724 | */ | |
d62a17ae | 4725 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4726 | { |
5394a276 CS |
4727 | struct listnode *node; |
4728 | struct bgp *bgp_vrf; | |
4729 | ||
676f83b9 | 4730 | if (withdraw) { |
4731 | ||
4732 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4733 | stored in the global table for this vrf |
4734 | */ | |
80b140af | 4735 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4736 | |
4737 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4738 | * L2-VNIs |
4739 | */ | |
d62a17ae | 4740 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4741 | (void (*)(struct hash_bucket *, |
d62a17ae | 4742 | void *))withdraw_router_id_vni, |
4743 | bgp); | |
5394a276 CS |
4744 | |
4745 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4746 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4747 | if (bgp_vrf->evpn_info->advertise_pip && | |
4748 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4749 | == INADDR_ANY)) | |
4750 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4751 | = INADDR_ANY; | |
4752 | } | |
4753 | } | |
676f83b9 | 4754 | } else { |
4755 | ||
5394a276 CS |
4756 | /* Assign new default instance router-id */ |
4757 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4758 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4759 | if (bgp_vrf->evpn_info->advertise_pip && | |
4760 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4761 | == INADDR_ANY)) { | |
4762 | bgp_vrf->evpn_info->pip_ip = | |
4763 | bgp->router_id; | |
4764 | /* advertise type-5 routes with | |
4765 | * new nexthop | |
4766 | */ | |
4767 | update_advertise_vrf_routes(bgp_vrf); | |
4768 | } | |
4769 | } | |
4770 | } | |
4771 | ||
676f83b9 | 4772 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4773 | * RD |
4774 | */ | |
80b140af | 4775 | update_router_id_vrf(bgp); |
676f83b9 | 4776 | |
4777 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4778 | * new RD |
4779 | */ | |
d62a17ae | 4780 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4781 | (void (*)(struct hash_bucket *, |
d62a17ae | 4782 | void *))update_router_id_vni, |
4783 | bgp); | |
676f83b9 | 4784 | } |
2d48ee25 | 4785 | } |
4786 | ||
bf1061d8 VB |
4787 | /* |
4788 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4789 | */ | |
4790 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4791 | { | |
4792 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4793 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4794 | void*))update_autort_vni, |
4795 | bgp); | |
4796 | } | |
4797 | ||
90e60aa7 | 4798 | /* |
4799 | * Handle change to export RT - update and advertise local routes. | |
4800 | */ | |
d62a17ae | 4801 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4802 | { |
d62a17ae | 4803 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4804 | } |
4805 | ||
996c9314 | 4806 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4807 | { |
4808 | if (withdraw) | |
4809 | delete_withdraw_vrf_routes(bgp_vrf); | |
4810 | else | |
4811 | update_advertise_vrf_routes(bgp_vrf); | |
4812 | } | |
4813 | ||
90e60aa7 | 4814 | /* |
4815 | * Handle change to RD. This is invoked twice by the change handler, | |
4816 | * first before the RD has been changed and then after the RD has | |
4817 | * been changed. The first invocation will result in local routes | |
4818 | * of this VNI being deleted and withdrawn and the next will result | |
4819 | * in the routes being re-advertised. | |
4820 | */ | |
d62a17ae | 4821 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4822 | int withdraw) | |
90e60aa7 | 4823 | { |
d62a17ae | 4824 | if (withdraw) |
4825 | delete_withdraw_vni_routes(bgp, vpn); | |
4826 | else | |
4827 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4828 | } |
4829 | ||
4830 | /* | |
4831 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4832 | */ | |
d62a17ae | 4833 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4834 | { |
d62a17ae | 4835 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4836 | } |
4837 | ||
4838 | /* | |
4839 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4840 | * to Import RT. | |
4841 | */ | |
d62a17ae | 4842 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4843 | { |
d62a17ae | 4844 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4845 | } |
4846 | ||
b16031a2 | 4847 | /* |
b57ba6d2 | 4848 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4849 | */ |
d7c0a89a | 4850 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4851 | int len) |
b16031a2 | 4852 | { |
b57ba6d2 | 4853 | vni_t vni1, vni2; |
b16031a2 | 4854 | |
b57ba6d2 MK |
4855 | vni1 = label2vni(label); |
4856 | if (num_labels == 2) { | |
996c9314 | 4857 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4858 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4859 | } else | |
4860 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4861 | return buf; |
b16031a2 | 4862 | } |
4863 | ||
9c92b5f7 MK |
4864 | /* |
4865 | * Function to convert evpn route to json format. | |
4866 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4867 | */ | |
57f7feb6 | 4868 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4869 | { |
b682f6de | 4870 | char buf1[ETHER_ADDR_STRLEN]; |
4871 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4872 | uint8_t family; |
4873 | uint8_t prefixlen; | |
9c92b5f7 | 4874 | |
b682f6de | 4875 | if (!json) |
4876 | return; | |
9c92b5f7 | 4877 | |
44c69747 LK |
4878 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4879 | ||
4880 | switch (p->prefix.route_type) { | |
4881 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4882 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4883 | p->prefix.macip_addr.eth_tag); |
4884 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4885 | json_object_string_add(json, "mac", | |
4886 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4887 | sizeof(buf1))); | |
4888 | ||
4889 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4890 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4891 | AF_INET6; | |
4892 | prefixlen = (family == AF_INET) ? | |
4893 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4894 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4895 | buf2, PREFIX2STR_BUFFER); | |
4896 | json_object_int_add(json, "ipLen", prefixlen); | |
4897 | json_object_string_add(json, "ip", buf2); | |
4898 | } | |
4899 | break; | |
dff8f48d | 4900 | |
44c69747 LK |
4901 | case BGP_EVPN_IMET_ROUTE: |
4902 | json_object_int_add(json, "ethTag", | |
4903 | p->prefix.imet_addr.eth_tag); | |
4904 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4905 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4906 | IPV6_MAX_BITLEN; | |
4907 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4908 | PREFIX2STR_BUFFER); | |
4909 | json_object_int_add(json, "ipLen", prefixlen); | |
4910 | json_object_string_add(json, "ip", buf2); | |
4911 | break; | |
dff8f48d | 4912 | |
44c69747 LK |
4913 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4914 | json_object_int_add(json, "ethTag", | |
4915 | p->prefix.prefix_addr.eth_tag); | |
4916 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4917 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4918 | buf2, sizeof(buf2)); | |
4919 | json_object_int_add(json, "ipLen", | |
4920 | p->prefix.prefix_addr.ip_prefix_length); | |
4921 | json_object_string_add(json, "ip", buf2); | |
4922 | break; | |
4923 | ||
4924 | default: | |
4925 | break; | |
dff8f48d | 4926 | } |
9c92b5f7 MK |
4927 | } |
4928 | ||
520d5d76 | 4929 | /* |
4930 | * Function to convert evpn route to string. | |
4931 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4932 | */ | |
d62a17ae | 4933 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4934 | { | |
4935 | char buf1[ETHER_ADDR_STRLEN]; | |
4936 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4937 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4938 | |
4939 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4940 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4941 | p->prefix.imet_addr.eth_tag, |
4942 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4943 | : IPV6_MAX_BITLEN, |
3714a385 | 4944 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4945 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4946 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4947 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4948 | p->prefix.route_type, | |
3714a385 | 4949 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4950 | 8 * ETH_ALEN, |
3714a385 | 4951 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4952 | sizeof(buf1))); |
4953 | else { | |
d7c0a89a | 4954 | uint8_t family; |
d62a17ae | 4955 | |
3714a385 | 4956 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4957 | : AF_INET6; |
554cd77a VB |
4958 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4959 | p->prefix.route_type, | |
3714a385 | 4960 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4961 | 8 * ETH_ALEN, |
3714a385 | 4962 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4963 | sizeof(buf1)), |
4964 | family == AF_INET ? IPV4_MAX_BITLEN | |
4965 | : IPV6_MAX_BITLEN, | |
3714a385 | 4966 | inet_ntop(family, |
4967 | &p->prefix.macip_addr.ip.ip.addr, | |
4968 | buf2, | |
d62a17ae | 4969 | PREFIX2STR_BUFFER)); |
4970 | } | |
342dd0c6 | 4971 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4972 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4973 | p->prefix.route_type, | |
3714a385 | 4974 | p->prefix.prefix_addr.eth_tag, |
4975 | p->prefix.prefix_addr.ip_prefix_length, | |
4976 | is_evpn_prefix_ipaddr_v4(p) | |
4977 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4978 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4979 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4980 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4981 | p->prefix.route_type, | |
4982 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4983 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4984 | : IPV6_MAX_BITLEN, | |
4985 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4986 | } else { |
b03b8898 | 4987 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4988 | snprintf(buf, len, "(unsupported route type %d)", |
4989 | p->prefix.route_type); | |
d62a17ae | 4990 | } |
4991 | ||
4992 | return (buf); | |
520d5d76 | 4993 | } |
4994 | ||
128ea8ab | 4995 | /* |
4996 | * Encode EVPN prefix in Update (MP_REACH) | |
4997 | */ | |
d62a17ae | 4998 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4999 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
5000 | uint32_t num_labels, struct attr *attr, |
5001 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 5002 | { |
5003 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5004 | int len, ipa_len = 0; |
d62a17ae | 5005 | |
5006 | if (addpath_encode) | |
5007 | stream_putl(s, addpath_tx_id); | |
5008 | ||
5009 | /* Route type */ | |
5010 | stream_putc(s, evp->prefix.route_type); | |
5011 | ||
5012 | switch (evp->prefix.route_type) { | |
5013 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5014 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5015 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5016 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5017 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5018 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5019 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5020 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5021 | len += 3; | |
5022 | stream_putc(s, len); | |
996c9314 | 5023 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
5024 | if (attr) |
5025 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
5026 | else | |
5027 | stream_put(s, 0, 10); | |
3714a385 | 5028 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5029 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5030 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5031 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5032 | if (ipa_len) /* IP */ | |
5033 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5034 | ipa_len); | |
b57ba6d2 MK |
5035 | /* 1st label is the L2 VNI */ |
5036 | stream_put(s, label, BGP_LABEL_BYTES); | |
5037 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5038 | if (ipa_len && num_labels > 1) | |
996c9314 | 5039 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5040 | break; |
5041 | ||
5042 | case BGP_EVPN_IMET_ROUTE: | |
5043 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5044 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5045 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5046 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5047 | /* Originating Router's IP Addr */ | |
3714a385 | 5048 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5049 | break; |
5050 | ||
50f74cf1 | 5051 | case BGP_EVPN_ES_ROUTE: |
5052 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5053 | stream_put(s, prd->val, 8); /* RD */ | |
5054 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5055 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5056 | /* VTEP IP */ |
5057 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5058 | break; |
5059 | ||
d62a17ae | 5060 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5061 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5062 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5063 | break; |
5064 | ||
5065 | default: | |
5066 | break; | |
5067 | } | |
5068 | } | |
5069 | ||
5070 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5071 | struct bgp_nlri *packet, int withdraw) | |
5072 | { | |
d7c0a89a QY |
5073 | uint8_t *pnt; |
5074 | uint8_t *lim; | |
d62a17ae | 5075 | afi_t afi; |
5076 | safi_t safi; | |
d7c0a89a | 5077 | uint32_t addpath_id; |
d62a17ae | 5078 | int addpath_encoded; |
5079 | int psize = 0; | |
d7c0a89a | 5080 | uint8_t rtype; |
d62a17ae | 5081 | struct prefix p; |
5082 | ||
d62a17ae | 5083 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5084 | pnt = packet->nlri; | |
5085 | lim = pnt + packet->length; | |
5086 | afi = packet->afi; | |
5087 | safi = packet->safi; | |
5088 | addpath_id = 0; | |
5089 | ||
5090 | addpath_encoded = | |
5091 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
5092 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
5093 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
5094 | ||
5095 | for (; pnt < lim; pnt += psize) { | |
5096 | /* Clear prefix structure. */ | |
5097 | memset(&p, 0, sizeof(struct prefix)); | |
5098 | ||
5099 | /* Deal with path-id if AddPath is supported. */ | |
5100 | if (addpath_encoded) { | |
5101 | /* When packet overflow occurs return immediately. */ | |
5102 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5103 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5104 | |
a3a850a1 S |
5105 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5106 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5107 | pnt += BGP_ADDPATH_ID_LEN; |
5108 | } | |
5109 | ||
5110 | /* All EVPN NLRI types start with type and length. */ | |
5111 | if (pnt + 2 > lim) | |
513386b5 | 5112 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5113 | |
5114 | rtype = *pnt++; | |
3f54c705 | 5115 | psize = *pnt++; |
d62a17ae | 5116 | |
5117 | /* When packet overflow occur return immediately. */ | |
5118 | if (pnt + psize > lim) | |
513386b5 | 5119 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5120 | |
5121 | switch (rtype) { | |
5122 | case BGP_EVPN_MAC_IP_ROUTE: | |
5123 | if (process_type2_route(peer, afi, safi, | |
5124 | withdraw ? NULL : attr, pnt, | |
5125 | psize, addpath_id)) { | |
af4c2728 | 5126 | flog_err( |
e50f7cfd | 5127 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5128 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5129 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5130 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5131 | } |
5132 | break; | |
5133 | ||
5134 | case BGP_EVPN_IMET_ROUTE: | |
5135 | if (process_type3_route(peer, afi, safi, | |
5136 | withdraw ? NULL : attr, pnt, | |
5137 | psize, addpath_id)) { | |
af4c2728 | 5138 | flog_err( |
e50f7cfd | 5139 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5140 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5141 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5142 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5143 | } |
5144 | break; | |
5145 | ||
50f74cf1 | 5146 | case BGP_EVPN_ES_ROUTE: |
5147 | if (process_type4_route(peer, afi, safi, | |
5148 | withdraw ? NULL : attr, pnt, | |
5149 | psize, addpath_id)) { | |
af4c2728 | 5150 | flog_err( |
e50f7cfd | 5151 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5152 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5153 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5154 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5155 | } |
5156 | break; | |
5157 | ||
d62a17ae | 5158 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5159 | if (process_type5_route(peer, afi, safi, |
5160 | withdraw ? NULL : attr, pnt, | |
5161 | psize, addpath_id)) { | |
af4c2728 | 5162 | flog_err( |
e50f7cfd | 5163 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5164 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5165 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5166 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5167 | } |
5168 | break; | |
5169 | ||
5170 | default: | |
5171 | break; | |
5172 | } | |
5173 | } | |
5174 | ||
5175 | /* Packet length consistency check. */ | |
5176 | if (pnt != lim) | |
513386b5 | 5177 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5178 | |
513386b5 | 5179 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5180 | } |
5181 | ||
10ebe1ab MK |
5182 | /* |
5183 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5184 | * The mapping will be used during route processing. | |
5185 | * bgp_def: default bgp instance | |
5186 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5187 | */ | |
5188 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5189 | { | |
5190 | int i = 0; | |
5191 | struct ecommunity_val *eval = NULL; | |
5192 | struct listnode *node = NULL, *nnode = NULL; | |
5193 | struct ecommunity *ecom = NULL; | |
5194 | ||
5195 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5196 | for (i = 0; i < ecom->size; i++) { | |
5197 | eval = (struct ecommunity_val *)(ecom->val | |
5198 | + (i | |
5199 | * ECOMMUNITY_SIZE)); | |
5200 | map_vrf_to_rt(bgp_vrf, eval); | |
5201 | } | |
5202 | } | |
5203 | } | |
5204 | ||
5205 | /* | |
5206 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5207 | */ | |
5208 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5209 | { | |
5210 | int i; | |
5211 | struct ecommunity_val *eval; | |
5212 | struct listnode *node, *nnode; | |
5213 | struct ecommunity *ecom; | |
5214 | ||
5215 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5216 | for (i = 0; i < ecom->size; i++) { | |
5217 | struct vrf_irt_node *irt; | |
5218 | struct ecommunity_val eval_tmp; | |
5219 | ||
5220 | eval = (struct ecommunity_val *)(ecom->val | |
5221 | + (i | |
5222 | * ECOMMUNITY_SIZE)); | |
5223 | /* If using "automatic" RT, we only care about the | |
5224 | * local-admin sub-field. | |
5225 | * This is to facilitate using VNI as the RT for EBGP | |
5226 | * peering too. | |
5227 | */ | |
5228 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5229 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5230 | BGP_VRF_IMPORT_RT_CFGD)) | |
5231 | mask_ecom_global_admin(&eval_tmp, eval); | |
5232 | ||
5233 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5234 | if (irt) | |
5235 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5236 | } | |
5237 | } | |
5238 | } | |
5239 | ||
5240 | ||
128ea8ab | 5241 | /* |
5242 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5243 | * The mapping will be used during route processing. | |
5244 | */ | |
d62a17ae | 5245 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5246 | { |
d62a17ae | 5247 | int i; |
5248 | struct ecommunity_val *eval; | |
5249 | struct listnode *node, *nnode; | |
5250 | struct ecommunity *ecom; | |
128ea8ab | 5251 | |
d62a17ae | 5252 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5253 | for (i = 0; i < ecom->size; i++) { | |
5254 | eval = (struct ecommunity_val *)(ecom->val | |
5255 | + (i | |
5256 | * ECOMMUNITY_SIZE)); | |
5257 | map_vni_to_rt(bgp, vpn, eval); | |
5258 | } | |
5259 | } | |
128ea8ab | 5260 | } |
5261 | ||
5262 | /* | |
5263 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5264 | */ | |
d62a17ae | 5265 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5266 | { |
d62a17ae | 5267 | int i; |
5268 | struct ecommunity_val *eval; | |
5269 | struct listnode *node, *nnode; | |
5270 | struct ecommunity *ecom; | |
128ea8ab | 5271 | |
d62a17ae | 5272 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5273 | for (i = 0; i < ecom->size; i++) { | |
5274 | struct irt_node *irt; | |
5275 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5276 | |
d62a17ae | 5277 | eval = (struct ecommunity_val *)(ecom->val |
5278 | + (i | |
5279 | * ECOMMUNITY_SIZE)); | |
5280 | /* If using "automatic" RT, we only care about the | |
5281 | * local-admin sub-field. | |
5282 | * This is to facilitate using VNI as the RT for EBGP | |
5283 | * peering too. | |
5284 | */ | |
5285 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5286 | if (!is_import_rt_configured(vpn)) | |
5287 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5288 | |
d62a17ae | 5289 | irt = lookup_import_rt(bgp, &eval_tmp); |
5290 | if (irt) | |
5291 | unmap_vni_from_rt(bgp, vpn, irt); | |
5292 | } | |
5293 | } | |
128ea8ab | 5294 | } |
5295 | ||
5296 | /* | |
5297 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5298 | * The mapping will be used during route processing. | |
5299 | */ | |
d62a17ae | 5300 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5301 | { |
c581d8b0 | 5302 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5303 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5304 | |
d62a17ae | 5305 | /* Map RT to VNI */ |
5306 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5307 | } |
5308 | ||
5309 | /* | |
5310 | * Derive Export RT automatically for VNI. | |
5311 | */ | |
d62a17ae | 5312 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5313 | { |
c581d8b0 | 5314 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5315 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5316 | } |
5317 | ||
676f83b9 | 5318 | /* |
5319 | * Derive RD automatically for VNI using passed information - it | |
5320 | * is of the form RouterId:unique-id-for-vni. | |
5321 | */ | |
5322 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5323 | { | |
9e97ff03 CS |
5324 | if (is_vrf_rd_configured(bgp)) |
5325 | return; | |
5326 | ||
92708db6 | 5327 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5328 | } |
5329 | ||
128ea8ab | 5330 | /* |
5331 | * Derive RD automatically for VNI using passed information - it | |
5332 | * is of the form RouterId:unique-id-for-vni. | |
5333 | */ | |
d62a17ae | 5334 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5335 | { |
d62a17ae | 5336 | char buf[100]; |
128ea8ab | 5337 | |
d62a17ae | 5338 | vpn->prd.family = AF_UNSPEC; |
5339 | vpn->prd.prefixlen = 64; | |
5340 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5341 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5342 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5343 | } |
5344 | ||
7df407ed CS |
5345 | /* |
5346 | * Lookup L3-VNI | |
5347 | */ | |
5348 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5349 | { | |
5350 | struct list *inst = bm->bgp; | |
5351 | struct listnode *node; | |
5352 | struct bgp *bgp_vrf; | |
5353 | ||
5354 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5355 | if (bgp_vrf->l3vni == vni) | |
5356 | return true; | |
5357 | } | |
5358 | ||
5359 | return false; | |
5360 | } | |
5361 | ||
128ea8ab | 5362 | /* |
5363 | * Lookup VNI. | |
5364 | */ | |
d62a17ae | 5365 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5366 | { |
d62a17ae | 5367 | struct bgpevpn *vpn; |
5368 | struct bgpevpn tmp; | |
128ea8ab | 5369 | |
d62a17ae | 5370 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5371 | tmp.vni = vni; | |
5372 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5373 | return vpn; | |
128ea8ab | 5374 | } |
5375 | ||
5376 | /* | |
5377 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5378 | */ | |
d62a17ae | 5379 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5380 | struct in_addr originator_ip, |
5381 | vrf_id_t tenant_vrf_id, | |
5382 | struct in_addr mcast_grp) | |
128ea8ab | 5383 | { |
d62a17ae | 5384 | struct bgpevpn *vpn; |
128ea8ab | 5385 | |
d62a17ae | 5386 | if (!bgp) |
5387 | return NULL; | |
128ea8ab | 5388 | |
d62a17ae | 5389 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5390 | |
d62a17ae | 5391 | /* Set values - RD and RT set to defaults. */ |
5392 | vpn->vni = vni; | |
5393 | vpn->originator_ip = originator_ip; | |
29c53922 | 5394 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5395 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5396 | |
d62a17ae | 5397 | /* Initialize route-target import and export lists */ |
5398 | vpn->import_rtl = list_new(); | |
5399 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5400 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5401 | vpn->export_rtl = list_new(); |
5402 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5403 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5404 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5405 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5406 | |
d62a17ae | 5407 | /* Initialize EVPN route table. */ |
960035b2 | 5408 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5409 | |
d62a17ae | 5410 | /* Add to hash */ |
5411 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5412 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5413 | return NULL; | |
5414 | } | |
6a8657d0 MK |
5415 | |
5416 | /* add to l2vni list on corresponding vrf */ | |
5417 | bgpevpn_link_to_l3vni(vpn); | |
5418 | ||
d62a17ae | 5419 | QOBJ_REG(vpn, bgpevpn); |
5420 | return vpn; | |
128ea8ab | 5421 | } |
5422 | ||
5423 | /* | |
5424 | * Free a given VPN - called in multiple scenarios such as zebra | |
5425 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5426 | * This just frees appropriate memory, caller should have taken other | |
5427 | * needed actions. | |
5428 | */ | |
d62a17ae | 5429 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5430 | { |
6a8657d0 | 5431 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5432 | bgp_table_unlock(vpn->route_table); |
5433 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5434 | list_delete(&vpn->import_rtl); |
5435 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5436 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5437 | hash_release(bgp->vnihash, vpn); |
5438 | QOBJ_UNREG(vpn); | |
5439 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5440 | } |
5441 | ||
5442 | /* | |
50f74cf1 | 5443 | * Lookup local ES. |
5444 | */ | |
5445 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5446 | { | |
5447 | struct evpnes *es; | |
5448 | struct evpnes tmp; | |
5449 | ||
5450 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5451 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5452 | es = hash_lookup(bgp->esihash, &tmp); | |
5453 | return es; | |
5454 | } | |
5455 | ||
5456 | /* | |
5457 | * Create a new local es - invoked upon zebra notification. | |
5458 | */ | |
5459 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5460 | esi_t *esi, | |
5461 | struct ipaddr *originator_ip) | |
5462 | { | |
5463 | char buf[100]; | |
5464 | struct evpnes *es; | |
5465 | ||
5466 | if (!bgp) | |
5467 | return NULL; | |
5468 | ||
5469 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5470 | |
5471 | /* set the ESI and originator_ip */ | |
5472 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5473 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5474 | ||
5475 | /* Initialise the VTEP list */ | |
5476 | es->vtep_list = list_new(); | |
ce167790 | 5477 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5478 | |
5479 | /* auto derive RD for this es */ | |
5480 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5481 | es->prd.family = AF_UNSPEC; | |
5482 | es->prd.prefixlen = 64; | |
5483 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5484 | (void)str2prefix_rd(buf, &es->prd); | |
5485 | ||
5486 | /* Initialize the ES route table */ | |
5487 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5488 | ||
5489 | /* Add to hash */ | |
5490 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5491 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5492 | return NULL; | |
5493 | } | |
5494 | ||
5495 | QOBJ_REG(es, evpnes); | |
5496 | return es; | |
5497 | } | |
5498 | ||
5499 | /* | |
5500 | * Free a given ES - | |
5501 | * This just frees appropriate memory, caller should have taken other | |
5502 | * needed actions. | |
5503 | */ | |
5504 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5505 | { | |
6a154c88 | 5506 | list_delete(&es->vtep_list); |
50f74cf1 | 5507 | bgp_table_unlock(es->route_table); |
5508 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5509 | hash_release(bgp->esihash, es); | |
5510 | QOBJ_UNREG(es); | |
5511 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5512 | } | |
5513 | ||
5514 | /* | |
5515 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5516 | */ |
d62a17ae | 5517 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5518 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5519 | { |
40381db7 | 5520 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5521 | } |
5522 | ||
5523 | /* | |
50f74cf1 | 5524 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5525 | */ |
d62a17ae | 5526 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
40381db7 | 5527 | struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5528 | { |
40381db7 | 5529 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5530 | } |
5531 | ||
db0e1937 MK |
5532 | /* filter routes which have martian next hops */ |
5533 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5534 | { | |
0291c246 MK |
5535 | afi_t afi; |
5536 | safi_t safi; | |
5537 | struct bgp_node *rd_rn, *rn; | |
5538 | struct bgp_table *table; | |
40381db7 | 5539 | struct bgp_path_info *pi; |
db0e1937 MK |
5540 | |
5541 | afi = AFI_L2VPN; | |
5542 | safi = SAFI_EVPN; | |
5543 | ||
5544 | /* Walk entire global routing table and evaluate routes which could be | |
5545 | * imported into this VPN. Note that we cannot just look at the routes | |
5546 | * for the VNI's RD - | |
5547 | * remote routes applicable for this VNI could have any RD. | |
5548 | */ | |
5549 | /* EVPN routes are a 2-level table. */ | |
5550 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5551 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5552 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5553 | if (!table) |
5554 | continue; | |
5555 | ||
5556 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5557 | ||
6f94b685 DS |
5558 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5559 | pi = pi->next) { | |
db0e1937 MK |
5560 | |
5561 | /* Consider "valid" remote routes applicable for | |
5562 | * this VNI. */ | |
40381db7 DS |
5563 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5564 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5565 | continue; |
949b0f24 | 5566 | if (bgp_nexthop_self(bgp, afi, |
5567 | pi->type, pi->sub_type, | |
5568 | pi->attr, rn)) { | |
db0e1937 | 5569 | |
8ba71050 | 5570 | char attr_str[BUFSIZ] = {0}; |
db0e1937 MK |
5571 | char pbuf[PREFIX_STRLEN]; |
5572 | ||
40381db7 | 5573 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5574 | BUFSIZ); |
5575 | ||
40381db7 | 5576 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5577 | NULL, 1)) |
5578 | zlog_debug( | |
b682f6de | 5579 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5580 | bgp->vrf_id, |
5581 | prefix2str( | |
60466a63 | 5582 | &rn->p, pbuf, |
db0e1937 MK |
5583 | sizeof(pbuf)), |
5584 | attr_str); | |
5585 | ||
5586 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5587 | &rn->p, pi); |
db0e1937 | 5588 | |
40381db7 | 5589 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5590 | safi); |
db0e1937 | 5591 | } |
db0e1937 MK |
5592 | } |
5593 | } | |
5594 | } | |
5595 | ||
5596 | return 0; | |
5597 | } | |
5598 | ||
128ea8ab | 5599 | /* |
5600 | * Handle del of a local MACIP. | |
5601 | */ | |
d62a17ae | 5602 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5603 | struct ipaddr *ip, int state) |
128ea8ab | 5604 | { |
d62a17ae | 5605 | struct bgpevpn *vpn; |
5606 | struct prefix_evpn p; | |
ec0ab544 | 5607 | struct bgp_node *rn; |
128ea8ab | 5608 | |
d62a17ae | 5609 | /* Lookup VNI hash - should exist. */ |
5610 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5611 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5612 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5613 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5614 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5615 | return -1; | |
5616 | } | |
128ea8ab | 5617 | |
d62a17ae | 5618 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5619 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5620 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5621 | delete_evpn_route(bgp, vpn, &p); | |
5622 | } else { | |
5623 | /* Re-instate the current remote best path if any */ | |
5624 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5625 | if (rn) | |
5626 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5627 | } | |
128ea8ab | 5628 | |
d62a17ae | 5629 | return 0; |
128ea8ab | 5630 | } |
5631 | ||
5632 | /* | |
5633 | * Handle add of a local MACIP. | |
5634 | */ | |
d62a17ae | 5635 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5636 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5637 | { |
d62a17ae | 5638 | struct bgpevpn *vpn; |
5639 | struct prefix_evpn p; | |
128ea8ab | 5640 | |
d62a17ae | 5641 | /* Lookup VNI hash - should exist. */ |
5642 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5643 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5644 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5645 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5646 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5647 | return -1; | |
5648 | } | |
128ea8ab | 5649 | |
d62a17ae | 5650 | /* Create EVPN type-2 route and schedule for processing. */ |
5651 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5652 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5653 | char buf[ETHER_ADDR_STRLEN]; |
5654 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5655 | |
af4c2728 | 5656 | flog_err( |
e50f7cfd | 5657 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5658 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5659 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5660 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5661 | ? "sticky gateway" | |
5662 | : "", | |
d62a17ae | 5663 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5664 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5665 | return -1; |
5666 | } | |
128ea8ab | 5667 | |
d62a17ae | 5668 | return 0; |
128ea8ab | 5669 | } |
5670 | ||
e3b78da8 | 5671 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5672 | struct bgp *bgp_vrf) |
5673 | { | |
e3b78da8 | 5674 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5675 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5676 | |
5e53dce3 T |
5677 | bgp_evpn = bgp_get_evpn(); |
5678 | assert(bgp_evpn); | |
6a8657d0 | 5679 | |
6a8657d0 MK |
5680 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5681 | bgpevpn_link_to_l3vni(vpn); | |
5682 | } | |
5683 | ||
14e814ea CS |
5684 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5685 | struct ethaddr *svi_rmac, | |
5686 | struct ethaddr *vrr_rmac, | |
0483af6e | 5687 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5688 | ifindex_t svi_ifindex, |
5689 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5690 | { |
5691 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5692 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5693 | struct listnode *node = NULL; |
5694 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5695 | as_t as = 0; |
5696 | ||
3621ebc5 | 5697 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5698 | * auto-creatio |
5699 | */ | |
5e53dce3 T |
5700 | bgp_evpn = bgp_get_evpn(); |
5701 | if (!bgp_evpn) { | |
af4c2728 | 5702 | flog_err( |
e50f7cfd | 5703 | EC_BGP_NO_DFLT, |
3621ebc5 | 5704 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5705 | l3vni); |
fe1dc5a3 MK |
5706 | return -1; |
5707 | } | |
5e53dce3 | 5708 | as = bgp_evpn->as; |
fe1dc5a3 | 5709 | |
0437e105 | 5710 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5711 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5712 | if (!bgp_vrf) { |
5713 | ||
5714 | int ret = 0; | |
5715 | ||
5d5393b9 DL |
5716 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5717 | vrf_id == VRF_DEFAULT | |
5718 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5719 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5720 | switch (ret) { |
fe1dc5a3 | 5721 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5722 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5723 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5724 | return -1; |
5725 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5726 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5727 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5728 | return -1; |
5729 | } | |
5730 | ||
5731 | /* mark as auto created */ | |
5732 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5733 | } | |
5734 | ||
0483af6e | 5735 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5736 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5737 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5738 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5739 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5740 | |
14e814ea CS |
5741 | /* copy anycast MAC from VRR MAC */ |
5742 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5743 | /* copy sys RMAC from SVI MAC */ | |
5744 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5745 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5746 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5747 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5748 | ||
5749 | if (bgp_debug_zebra(NULL)) { | |
5750 | char buf[ETHER_ADDR_STRLEN]; | |
5751 | char buf1[ETHER_ADDR_STRLEN]; | |
5752 | char buf2[ETHER_ADDR_STRLEN]; | |
5753 | ||
5754 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5755 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5756 | bgp_vrf->l3vni, | |
5757 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5758 | : "disable", | |
5759 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5760 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5761 | buf1, sizeof(buf1)), | |
5762 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5763 | buf2, sizeof(buf2)), | |
5764 | is_anycast_mac ? "Enable" : "Disable"); | |
5765 | } | |
c48d9f5f MK |
5766 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5767 | if (filter) | |
5768 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5769 | ||
530e8a6e | 5770 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5771 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5772 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5773 | else |
5774 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5775 | ||
c581d8b0 MK |
5776 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5777 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5778 | |
5779 | /* auto derive RD */ | |
676f83b9 | 5780 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5781 | |
6a8657d0 | 5782 | /* link all corresponding l2vnis */ |
5e53dce3 | 5783 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5784 | (void (*)(struct hash_bucket *, |
996c9314 | 5785 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5786 | bgp_vrf); |
5787 | ||
c48d9f5f MK |
5788 | /* Only update all corresponding type-2 routes if we are advertising two |
5789 | * labels along with type-2 routes | |
5790 | */ | |
5791 | if (!filter) | |
5792 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5793 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5794 | |
06d2e8f3 MK |
5795 | /* advertise type-5 routes if needed */ |
5796 | update_advertise_vrf_routes(bgp_vrf); | |
5797 | ||
5ba238b7 MK |
5798 | /* install all remote routes belonging to this l3vni into correspondng |
5799 | * vrf */ | |
5800 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5801 | |
5802 | return 0; | |
5803 | } | |
5804 | ||
996c9314 | 5805 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5806 | { |
5807 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5808 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5809 | struct listnode *node = NULL; |
18abc1eb | 5810 | struct listnode *next = NULL; |
f1f8b53c | 5811 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5812 | |
5813 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5814 | if (!bgp_vrf) { | |
af4c2728 | 5815 | flog_err( |
e50f7cfd | 5816 | EC_BGP_NO_DFLT, |
996c9314 LB |
5817 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5818 | l3vni); | |
fe1dc5a3 MK |
5819 | return -1; |
5820 | } | |
5821 | ||
5e53dce3 T |
5822 | bgp_evpn = bgp_get_evpn(); |
5823 | if (!bgp_evpn) { | |
af4c2728 | 5824 | flog_err( |
e50f7cfd | 5825 | EC_BGP_NO_DFLT, |
3621ebc5 | 5826 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5827 | l3vni); |
f1f8b53c MK |
5828 | return -1; |
5829 | } | |
5830 | ||
d846168d | 5831 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5832 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5833 | * routes. This will uninstalling the routes from zebra and decremnt the |
5834 | * bgp info count. | |
523cafc4 | 5835 | */ |
d846168d | 5836 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5837 | |
06d2e8f3 MK |
5838 | /* delete/withdraw all type-5 routes */ |
5839 | delete_withdraw_vrf_routes(bgp_vrf); | |
5840 | ||
fe1dc5a3 MK |
5841 | /* remove the l3vni from vrf instance */ |
5842 | bgp_vrf->l3vni = 0; | |
5843 | ||
5844 | /* remove the Rmac from the BGP vrf */ | |
5845 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5846 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5847 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5848 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5849 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5850 | |
530e8a6e | 5851 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5852 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5853 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5854 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5855 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5856 | } |
530e8a6e CS |
5857 | |
5858 | /* remove default export RT */ | |
5859 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5860 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5861 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5862 | } |
fe1dc5a3 | 5863 | |
f1f8b53c | 5864 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5865 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5866 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5867 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5868 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5869 | } |
5870 | } | |
fe1dc5a3 | 5871 | |
18abc1eb | 5872 | /* If any L2VNIs point to this instance, unlink them. */ |
5873 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5874 | bgpevpn_unlink_from_l3vni(vpn); | |
5875 | ||
ff9d54fb CS |
5876 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5877 | ||
fe1dc5a3 MK |
5878 | /* Delete the instance if it was autocreated */ |
5879 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5880 | bgp_delete(bgp_vrf); | |
5881 | ||
5882 | return 0; | |
5883 | } | |
5884 | ||
128ea8ab | 5885 | /* |
5886 | * Handle del of a local VNI. | |
5887 | */ | |
d62a17ae | 5888 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5889 | { |
d62a17ae | 5890 | struct bgpevpn *vpn; |
128ea8ab | 5891 | |
d62a17ae | 5892 | /* Locate VNI hash */ |
5893 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5894 | if (!vpn) { | |
1e00627b | 5895 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5896 | flog_warn( |
e50f7cfd | 5897 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5898 | "%u: VNI hash entry for VNI %u not found at DEL", |
5899 | bgp->vrf_id, vni); | |
d62a17ae | 5900 | return 0; |
5901 | } | |
128ea8ab | 5902 | |
d62a17ae | 5903 | /* Remove all local EVPN routes and schedule for processing (to |
5904 | * withdraw from peers). | |
5905 | */ | |
5906 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5907 | |
db0e1937 MK |
5908 | /* |
5909 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5910 | */ | |
5911 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5912 | ||
d62a17ae | 5913 | /* Clear "live" flag and see if hash needs to be freed. */ |
5914 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5915 | if (!is_vni_configured(vpn)) | |
5916 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5917 | |
d62a17ae | 5918 | return 0; |
128ea8ab | 5919 | } |
5920 | ||
5921 | /* | |
d1911c26 | 5922 | * Handle add (or update) of a local VNI. The VNI changes we care |
5923 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5924 | */ |
d62a17ae | 5925 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5926 | struct in_addr originator_ip, |
5927 | vrf_id_t tenant_vrf_id, | |
5928 | struct in_addr mcast_grp) | |
5929 | ||
d62a17ae | 5930 | { |
5931 | struct bgpevpn *vpn; | |
5932 | struct prefix_evpn p; | |
5933 | ||
d62a17ae | 5934 | /* Lookup VNI. If present and no change, exit. */ |
5935 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5936 | if (vpn) { |
29c53922 | 5937 | |
d1911c26 | 5938 | if (is_vni_live(vpn) |
5939 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5940 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5941 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5942 | /* Probably some other param has changed that we don't | |
5943 | * care about. */ | |
5944 | return 0; | |
5945 | ||
76d07c7a AK |
5946 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5947 | ||
d1911c26 | 5948 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5949 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5950 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5951 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5952 | bgpevpn_link_to_l3vni(vpn); |
5953 | } | |
29c53922 | 5954 | |
d1911c26 | 5955 | /* If tunnel endpoint IP has changed, update (and delete prior |
5956 | * type-3 route, if needed.) | |
5957 | */ | |
5958 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5959 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5960 | |
d1911c26 | 5961 | /* Update all routes with new endpoint IP and/or export RT |
5962 | * for VRFs | |
5963 | */ | |
5964 | if (is_vni_live(vpn)) | |
5965 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5966 | } |
5967 | ||
5968 | /* Create or update as appropriate. */ | |
5969 | if (!vpn) { | |
76d07c7a AK |
5970 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5971 | mcast_grp); | |
d62a17ae | 5972 | if (!vpn) { |
af4c2728 | 5973 | flog_err( |
e50f7cfd | 5974 | EC_BGP_VNI, |
d62a17ae | 5975 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5976 | bgp->vrf_id, vni); | |
5977 | return -1; | |
5978 | } | |
5979 | } | |
5980 | ||
db0e1937 | 5981 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5982 | if (is_vni_live(vpn)) |
5983 | return 0; | |
5984 | ||
d62a17ae | 5985 | /* Mark as "live" */ |
5986 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5987 | ||
db0e1937 MK |
5988 | /* tunnel is now active, add tunnel-ip to db */ |
5989 | bgp_tip_add(bgp, &originator_ip); | |
5990 | ||
5991 | /* filter routes as nexthop database has changed */ | |
5992 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5993 | ||
fd069644 DS |
5994 | /* |
5995 | * Create EVPN type-3 route and schedule for processing. | |
5996 | * | |
5997 | * RT-3 only if doing head-end replication | |
5998 | */ | |
833b8a50 AK |
5999 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6000 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
6001 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
6002 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
6003 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
6004 | "%u: Type3 route creation failure for VNI %u", | |
6005 | bgp->vrf_id, vni); | |
6006 | return -1; | |
6007 | } | |
d62a17ae | 6008 | } |
6009 | ||
6010 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6011 | * VNI, | |
6012 | * install them. | |
6013 | */ | |
6014 | install_routes_for_vni(bgp, vpn); | |
6015 | ||
d7d97010 MK |
6016 | /* If we are advertising gateway mac-ip |
6017 | It needs to be conveyed again to zebra */ | |
6018 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6019 | ||
df070e6f CS |
6020 | /* advertise svi mac-ip knob to zebra */ |
6021 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6022 | ||
d62a17ae | 6023 | return 0; |
b18825eb | 6024 | } |
14c1a7bf | 6025 | |
50f74cf1 | 6026 | /* |
6027 | * bgp_evpn_local_es_del | |
6028 | */ | |
6029 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
6030 | esi_t *esi, | |
6031 | struct ipaddr *originator_ip) | |
6032 | { | |
6033 | char buf[ESI_STR_LEN]; | |
6034 | struct evpnes *es = NULL; | |
6035 | ||
6036 | if (!bgp->esihash) { | |
e50f7cfd | 6037 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6038 | bgp->vrf_id); |
50f74cf1 | 6039 | return -1; |
6040 | } | |
6041 | ||
6042 | /* Lookup ESI hash - should exist. */ | |
6043 | es = bgp_evpn_lookup_es(bgp, esi); | |
6044 | if (!es) { | |
e50f7cfd | 6045 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
6046 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
6047 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6048 | return -1; |
6049 | } | |
6050 | ||
6051 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 6052 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 6053 | */ |
6054 | delete_routes_for_es(bgp, es); | |
6055 | ||
6056 | /* free the hash entry */ | |
6057 | bgp_evpn_es_free(bgp, es); | |
6058 | ||
6059 | return 0; | |
6060 | } | |
6061 | ||
6062 | /* | |
6063 | * bgp_evpn_local_es_add | |
6064 | */ | |
6065 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
6066 | esi_t *esi, | |
6067 | struct ipaddr *originator_ip) | |
6068 | { | |
6069 | char buf[ESI_STR_LEN]; | |
6070 | struct evpnes *es = NULL; | |
6071 | struct prefix_evpn p; | |
6072 | ||
6073 | if (!bgp->esihash) { | |
e50f7cfd | 6074 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6075 | bgp->vrf_id); |
50f74cf1 | 6076 | return -1; |
6077 | } | |
6078 | ||
6079 | /* create the new es */ | |
2bb9eff4 | 6080 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 6081 | if (!es) { |
6082 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
6083 | if (!es) { | |
af4c2728 | 6084 | flog_err( |
e50f7cfd | 6085 | EC_BGP_ES_CREATE, |
50f74cf1 | 6086 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
6087 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
6088 | return -1; | |
6089 | } | |
6090 | } | |
6091 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
6092 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
6093 | ||
6094 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
6095 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 6096 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
6097 | "%u: Type4 route creation failure for ESI %s", |
6098 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6099 | return -1; |
6100 | } | |
6101 | ||
6102 | /* import all remote ES routes in th ES table */ | |
6103 | install_routes_for_es(bgp, es); | |
6104 | ||
6105 | return 0; | |
6106 | } | |
6107 | ||
fd069644 DS |
6108 | /* |
6109 | * Handle change in setting for BUM handling. The supported values | |
6110 | * are head-end replication and dropping all BUM packets. Any change | |
6111 | * should be registered with zebra. Also, if doing head-end replication, | |
6112 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6113 | * to be dropped, the RT-3s must be withdrawn. | |
6114 | */ | |
6115 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6116 | { | |
6117 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6118 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6119 | "Flooding" : "Flooding Disabled"); | |
6120 | ||
6121 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6122 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6123 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6124 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6125 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6126 | } | |
6127 | ||
7724c0a1 | 6128 | /* |
6129 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6130 | * EVPN routes from peers. | |
6131 | */ | |
d62a17ae | 6132 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6133 | { |
e3b78da8 | 6134 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6135 | void *))cleanup_vni_on_disable, |
6136 | bgp); | |
7724c0a1 | 6137 | } |
6138 | ||
14c1a7bf | 6139 | /* |
6140 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6141 | * BGP instance (default) is being freed. | |
6142 | */ | |
d62a17ae | 6143 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6144 | { |
1525e99f | 6145 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6146 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6147 | bgp); |
6148 | ||
6149 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 6150 | bgp->import_rt_hash = NULL; |
1525e99f DS |
6151 | |
6152 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 6153 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
6154 | |
6155 | hash_free(bgp->vnihash); | |
d62a17ae | 6156 | bgp->vnihash = NULL; |
50f74cf1 | 6157 | if (bgp->esihash) |
6158 | hash_free(bgp->esihash); | |
6159 | bgp->esihash = NULL; | |
1525e99f | 6160 | |
6a154c88 DL |
6161 | list_delete(&bgp->vrf_import_rtl); |
6162 | list_delete(&bgp->vrf_export_rtl); | |
6163 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6164 | } |
6165 | ||
6166 | /* | |
6167 | * Initialization for EVPN | |
6168 | * Create | |
6169 | * VNI hash table | |
6170 | * hash for RT to VNI | |
14c1a7bf | 6171 | */ |
d62a17ae | 6172 | void bgp_evpn_init(struct bgp *bgp) |
6173 | { | |
6174 | bgp->vnihash = | |
6175 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 6176 | bgp->esihash = |
6177 | hash_create(esi_hash_keymake, esi_cmp, | |
6178 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 6179 | bgp->import_rt_hash = |
6180 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6181 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6182 | bgp->vrf_import_rt_hash = |
6183 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6184 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6185 | bgp->vrf_import_rtl = list_new(); |
6186 | bgp->vrf_import_rtl->cmp = | |
6187 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6188 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
6189 | bgp->vrf_export_rtl = list_new(); |
6190 | bgp->vrf_export_rtl->cmp = | |
6191 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6192 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 6193 | bgp->l2vnis = list_new(); |
64465785 | 6194 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6195 | /* By default Duplicate Address Dection is enabled. |
6196 | * Max-moves (N) 5, detection time (M) 180 | |
6197 | * default action is warning-only | |
6198 | * freeze action permanently freezes address, | |
6199 | * and freeze time (auto-recovery) is disabled. | |
6200 | */ | |
6201 | if (bgp->evpn_info) { | |
6202 | bgp->evpn_info->dup_addr_detect = true; | |
6203 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6204 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6205 | bgp->evpn_info->dad_freeze = false; | |
6206 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6207 | /* Initialize zebra vxlan */ |
6208 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6209 | /* Enable PIP feature by default for bgp vrf instance */ |
6210 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6211 | struct bgp *bgp_default; | |
6212 | ||
6213 | bgp->evpn_info->advertise_pip = true; | |
6214 | bgp_default = bgp_get_default(); | |
6215 | if (bgp_default) | |
6216 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6217 | } | |
85c8d83b | 6218 | } |
fd069644 DS |
6219 | |
6220 | /* Default BUM handling is to do head-end replication. */ | |
6221 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 6222 | } |
10ebe1ab MK |
6223 | |
6224 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6225 | { | |
6226 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
6227 | } | |
44c69747 LK |
6228 | |
6229 | /* | |
6230 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6231 | */ | |
6232 | int bgp_evpn_get_type5_prefixlen(struct prefix *pfx) | |
6233 | { | |
6234 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6235 | ||
6236 | if (!pfx || pfx->family != AF_EVPN) | |
6237 | return 0; | |
6238 | ||
6239 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6240 | return 0; | |
6241 | ||
6242 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6243 | } | |
7c312383 AD |
6244 | |
6245 | /* | |
6246 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6247 | */ | |
6248 | bool bgp_evpn_is_prefix_nht_supported(struct prefix *pfx) | |
6249 | { | |
6250 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6251 | ||
6252 | /* | |
6253 | * EVPN RT-5 should not be marked as valid and imported to vrfs if the | |
6254 | * BGP nexthop is not reachable. To check for the nexthop reachability, | |
6255 | * Add nexthop for EVPN RT-5 for nexthop tracking. | |
6256 | * | |
6257 | * Ideally, a BGP route should be marked as valid only if the | |
6258 | * nexthop is reachable. Thus, other EVPN route types also should be | |
6259 | * added here after testing is performed for them. | |
6260 | */ | |
6261 | if (pfx && pfx->family == AF_EVPN && | |
6262 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) | |
6263 | return true; | |
6264 | ||
6265 | return false; | |
6266 | } |