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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 | 498 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 499 | const struct prefix_evpn *p, |
0ca10580 CS |
500 | struct attr *attr, uint8_t flags) |
501 | { | |
502 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
503 | ||
504 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
505 | if (!bgp_vrf) | |
506 | return; | |
507 | ||
b96cafa3 CS |
508 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
509 | return; | |
510 | ||
511 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
512 | * in case of route is self MAC-IP, | |
513 | * advertise-pip and advertise-svi-ip features | |
514 | * are enabled. | |
515 | * Otherwise, for all host MAC-IP route's | |
27727001 | 516 | * copy anycast RMAC. |
b96cafa3 CS |
517 | */ |
518 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
519 | && bgp_vrf->evpn_info->advertise_pip && | |
520 | bgp_vrf->evpn_info->is_anycast_mac) { | |
521 | /* copy sys rmac */ | |
522 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
523 | ETH_ALEN); | |
524 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
525 | attr->mp_nexthop_global_in = | |
526 | bgp_vrf->evpn_info->pip_ip; | |
527 | } else | |
528 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 529 | } |
b96cafa3 | 530 | |
128ea8ab | 531 | /* |
532 | * Create RT extended community automatically from passed information: | |
533 | * of the form AS:VNI. | |
534 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
535 | * the need is to get a RT value that will be unique across different | |
536 | * VNIs but the same across routers (in the same AS) for a particular | |
537 | * VNI. | |
538 | */ | |
c581d8b0 | 539 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 540 | { |
d62a17ae | 541 | struct ecommunity_val eval; |
b90d4580 CS |
542 | struct ecommunity *ecomadd, *ecom; |
543 | bool ecom_found = false; | |
544 | struct listnode *node; | |
128ea8ab | 545 | |
bf1061d8 VB |
546 | if (bgp->advertise_autort_rfc8365) |
547 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 548 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 549 | |
d62a17ae | 550 | ecomadd = ecommunity_new(); |
1207a5bc | 551 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
552 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
553 | if (ecommunity_cmp(ecomadd, ecom)) | |
554 | ecom_found = true; | |
555 | ||
556 | if (!ecom_found) | |
557 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 558 | } |
14c1a7bf | 559 | |
560 | /* | |
128ea8ab | 561 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
562 | * creation of a VNI. | |
563 | */ | |
d62a17ae | 564 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 565 | { |
d62a17ae | 566 | bgp_evpn_derive_auto_rd(bgp, vpn); |
567 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
568 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 569 | } |
570 | ||
1ec31309 | 571 | /* |
572 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
573 | */ | |
574 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
575 | { | |
576 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
577 | return; | |
578 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
579 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
580 | } | |
581 | ||
128ea8ab | 582 | /* |
583 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 584 | */ |
d62a17ae | 585 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 586 | const struct prefix_evpn *p, |
d62a17ae | 587 | struct in_addr remote_vtep_ip, int add, |
f07e1c99 | 588 | uint8_t flags, uint32_t seq) |
d62a17ae | 589 | { |
590 | struct stream *s; | |
591 | int ipa_len; | |
592 | char buf1[ETHER_ADDR_STRLEN]; | |
593 | char buf2[INET6_ADDRSTRLEN]; | |
594 | char buf3[INET6_ADDRSTRLEN]; | |
595 | ||
596 | /* Check socket. */ | |
597 | if (!zclient || zclient->sock < 0) | |
598 | return 0; | |
599 | ||
600 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
601 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
602 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
603 | zlog_debug( |
604 | "%s: No zebra instance to talk to, not installing remote macip", | |
605 | __func__); | |
d62a17ae | 606 | return 0; |
bb4ef1ae | 607 | } |
d62a17ae | 608 | s = zclient->obuf; |
609 | stream_reset(s); | |
610 | ||
996c9314 LB |
611 | zclient_create_header( |
612 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
613 | bgp->vrf_id); | |
d62a17ae | 614 | stream_putl(s, vpn->vni); |
3714a385 | 615 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 616 | /* IP address length and IP address, if any. */ |
3714a385 | 617 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 618 | stream_putl(s, 0); |
619 | else { | |
3714a385 | 620 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 621 | : IPV6_MAX_BYTELEN; |
622 | stream_putl(s, ipa_len); | |
3714a385 | 623 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 624 | } |
625 | stream_put_in_addr(s, &remote_vtep_ip); | |
626 | ||
ead40654 | 627 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 628 | /* Also TX the sequence number of the best route. */ |
629 | if (add) { | |
ead40654 | 630 | stream_putc(s, flags); |
f07e1c99 | 631 | stream_putl(s, seq); |
632 | } | |
d62a17ae | 633 | |
634 | stream_putw_at(s, 0, stream_get_endp(s)); | |
635 | ||
636 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 637 | zlog_debug( |
f07e1c99 | 638 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 639 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 640 | prefix_mac2str(&p->prefix.macip_addr.mac, |
641 | buf1, sizeof(buf1)), | |
642 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 643 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
644 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
645 | sizeof(buf2))); | |
d62a17ae | 646 | |
647 | return zclient_send_message(zclient); | |
7ef5a232 | 648 | } |
b18825eb | 649 | |
128ea8ab | 650 | /* |
651 | * Add (update) or delete remote VTEP from zebra. | |
652 | */ | |
d62a17ae | 653 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
654 | const struct prefix_evpn *p, |
655 | int flood_control, int add) | |
128ea8ab | 656 | { |
d62a17ae | 657 | struct stream *s; |
128ea8ab | 658 | |
d62a17ae | 659 | /* Check socket. */ |
660 | if (!zclient || zclient->sock < 0) | |
661 | return 0; | |
128ea8ab | 662 | |
d62a17ae | 663 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
664 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
665 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
666 | zlog_debug( |
667 | "%s: No zebra instance to talk to, not installing remote vtep", | |
668 | __func__); | |
d62a17ae | 669 | return 0; |
bb4ef1ae | 670 | } |
128ea8ab | 671 | |
d62a17ae | 672 | s = zclient->obuf; |
673 | stream_reset(s); | |
128ea8ab | 674 | |
996c9314 LB |
675 | zclient_create_header( |
676 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
677 | bgp->vrf_id); | |
d62a17ae | 678 | stream_putl(s, vpn->vni); |
3714a385 | 679 | if (is_evpn_prefix_ipaddr_v4(p)) |
680 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
681 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 682 | flog_err( |
e50f7cfd | 683 | EC_BGP_VTEP_INVALID, |
d62a17ae | 684 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
685 | add ? "ADD" : "DEL", vpn->vni); | |
686 | return -1; | |
687 | } | |
b16dd019 | 688 | stream_putl(s, flood_control); |
128ea8ab | 689 | |
d62a17ae | 690 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 691 | |
d62a17ae | 692 | if (bgp_debug_zebra(NULL)) |
693 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
694 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 695 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 696 | |
d62a17ae | 697 | return zclient_send_message(zclient); |
128ea8ab | 698 | } |
699 | ||
50f74cf1 | 700 | /* |
701 | * Build extended community for EVPN ES (type-4) route | |
702 | */ | |
703 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
704 | struct attr *attr) | |
705 | { | |
706 | struct ecommunity ecom_encap; | |
707 | struct ecommunity ecom_es_rt; | |
708 | struct ecommunity_val eval; | |
709 | struct ecommunity_val eval_es_rt; | |
710 | bgp_encap_types tnl_type; | |
711 | struct ethaddr mac; | |
712 | ||
713 | /* Encap */ | |
714 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
715 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
716 | encode_encap_extcomm(tnl_type, &eval); | |
717 | ecom_encap.size = 1; | |
718 | ecom_encap.val = (uint8_t *)eval.val; | |
719 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
720 | ||
721 | /* ES import RT */ | |
722 | memset(&mac, 0, sizeof(struct ethaddr)); | |
723 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
724 | es_get_system_mac(&es->esi, &mac); | |
725 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
726 | ecom_es_rt.size = 1; | |
727 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
728 | attr->ecommunity = | |
729 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
730 | ||
731 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
732 | } | |
733 | ||
342dd0c6 | 734 | /* |
735 | * Build extended communities for EVPN prefix route. | |
736 | */ | |
737 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
738 | struct attr *attr) | |
739 | { | |
740 | struct ecommunity ecom_encap; | |
342dd0c6 | 741 | struct ecommunity_val eval; |
742 | struct ecommunity_val eval_rmac; | |
743 | bgp_encap_types tnl_type; | |
744 | struct listnode *node, *nnode; | |
745 | struct ecommunity *ecom; | |
fab92da7 | 746 | struct ecommunity *old_ecom; |
342dd0c6 | 747 | struct list *vrf_export_rtl = NULL; |
748 | ||
749 | /* Encap */ | |
750 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
751 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
752 | encode_encap_extcomm(tnl_type, &eval); | |
753 | ecom_encap.size = 1; | |
d7c0a89a | 754 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 755 | |
756 | /* Add Encap */ | |
fab92da7 | 757 | if (attr->ecommunity) { |
758 | old_ecom = attr->ecommunity; | |
759 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
760 | if (!old_ecom->refcnt) | |
761 | ecommunity_free(&old_ecom); | |
762 | } else | |
763 | ecom = ecommunity_dup(&ecom_encap); | |
764 | attr->ecommunity = ecom; | |
342dd0c6 | 765 | |
766 | /* Add the export RTs for L3VNI/VRF */ | |
767 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
768 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
769 | attr->ecommunity = | |
770 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 771 | |
772 | /* add the router mac extended community */ | |
773 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 774 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 775 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 776 | } |
777 | ||
778 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
779 | } | |
780 | ||
128ea8ab | 781 | /* |
1ec31309 | 782 | * Build extended communities for EVPN route. |
783 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
784 | * and ENCAP extended communities are applicable for all routes. | |
785 | * The default gateway extended community and MAC mobility (sticky) extended | |
786 | * community are added as needed based on passed settings - only for type-2 | |
787 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
788 | * added, if present, based on passed settings - only for non-link-local | |
789 | * type-2 routes. | |
128ea8ab | 790 | */ |
7ec156a9 | 791 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 792 | int add_l3_ecomm) |
128ea8ab | 793 | { |
d62a17ae | 794 | struct ecommunity ecom_encap; |
795 | struct ecommunity ecom_sticky; | |
ead40654 | 796 | struct ecommunity ecom_default_gw; |
68e33151 | 797 | struct ecommunity ecom_na; |
d62a17ae | 798 | struct ecommunity_val eval; |
799 | struct ecommunity_val eval_sticky; | |
ead40654 | 800 | struct ecommunity_val eval_default_gw; |
bc59a672 | 801 | struct ecommunity_val eval_rmac; |
68e33151 CS |
802 | struct ecommunity_val eval_na; |
803 | ||
d62a17ae | 804 | bgp_encap_types tnl_type; |
805 | struct listnode *node, *nnode; | |
806 | struct ecommunity *ecom; | |
d7c0a89a | 807 | uint32_t seqnum; |
7a3e76f1 | 808 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 809 | |
d62a17ae | 810 | /* Encap */ |
811 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
812 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
813 | encode_encap_extcomm(tnl_type, &eval); | |
814 | ecom_encap.size = 1; | |
d7c0a89a | 815 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 816 | |
d62a17ae | 817 | /* Add Encap */ |
818 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 819 | |
7a3e76f1 | 820 | /* Add the export RTs for L2VNI */ |
d62a17ae | 821 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
822 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 823 | |
1ec31309 | 824 | /* Add the export RTs for L3VNI if told to - caller determines |
825 | * when this should be done. | |
523cafc4 | 826 | */ |
1ec31309 | 827 | if (add_l3_ecomm) { |
7ec156a9 MK |
828 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
829 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
830 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
831 | ecom)) | |
996c9314 LB |
832 | attr->ecommunity = ecommunity_merge( |
833 | attr->ecommunity, ecom); | |
7ec156a9 | 834 | } |
f1f8b53c | 835 | } |
7a3e76f1 | 836 | |
1ec31309 | 837 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 838 | if (attr->sticky) { |
839 | seqnum = 0; | |
840 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
841 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
842 | ecom_sticky.size = 1; | |
d7c0a89a | 843 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 844 | attr->ecommunity = |
845 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
846 | } | |
c85c03c7 | 847 | |
1ec31309 | 848 | /* Add RMAC, if told to. */ |
849 | if (add_l3_ecomm) { | |
bc59a672 | 850 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 851 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
852 | } |
853 | ||
1ec31309 | 854 | /* Add default gateway, if needed. */ |
ead40654 MK |
855 | if (attr->default_gw) { |
856 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
857 | encode_default_gw_extcomm(&eval_default_gw); | |
858 | ecom_default_gw.size = 1; | |
859 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
860 | attr->ecommunity = |
861 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
862 | } |
863 | ||
68e33151 CS |
864 | if (attr->router_flag) { |
865 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
866 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
867 | ecom_na.size = 1; | |
868 | ecom_na.val = (uint8_t *)eval_na.val; | |
869 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
870 | &ecom_na); | |
871 | } | |
872 | ||
d62a17ae | 873 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 874 | } |
875 | ||
876 | /* | |
877 | * Add MAC mobility extended community to attribute. | |
878 | */ | |
d7c0a89a | 879 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 880 | { |
881 | struct ecommunity ecom_tmp; | |
882 | struct ecommunity_val eval; | |
d7c0a89a | 883 | uint8_t *ecom_val_ptr; |
d62a17ae | 884 | int i; |
d7c0a89a | 885 | uint8_t *pnt; |
d62a17ae | 886 | int type = 0; |
887 | int sub_type = 0; | |
888 | ||
889 | /* Build MM */ | |
890 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
891 | ||
892 | /* Find current MM ecommunity */ | |
421bb26a | 893 | ecom_val_ptr = NULL; |
d62a17ae | 894 | |
895 | if (attr->ecommunity) { | |
896 | for (i = 0; i < attr->ecommunity->size; i++) { | |
897 | pnt = attr->ecommunity->val + (i * 8); | |
898 | type = *pnt++; | |
899 | sub_type = *pnt++; | |
900 | ||
901 | if (type == ECOMMUNITY_ENCODE_EVPN | |
902 | && sub_type | |
903 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 DA |
904 | ecom_val_ptr = |
905 | (attr->ecommunity->val + (i * 8)); | |
d62a17ae | 906 | break; |
907 | } | |
908 | } | |
909 | } | |
910 | ||
911 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
912 | if (ecom_val_ptr) { |
913 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 914 | } |
915 | /* Add MM to existing */ | |
916 | else { | |
917 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
918 | ecom_tmp.size = 1; | |
d7c0a89a | 919 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 920 | |
f9a78910 DS |
921 | if (attr->ecommunity) |
922 | attr->ecommunity = | |
923 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
924 | else | |
925 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 926 | } |
128ea8ab | 927 | } |
928 | ||
929 | /* Install EVPN route into zebra. */ | |
d62a17ae | 930 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
931 | const struct prefix_evpn *p, |
932 | struct bgp_path_info *pi) | |
128ea8ab | 933 | { |
d62a17ae | 934 | int ret; |
d594a14c | 935 | uint8_t flags; |
b16dd019 | 936 | int flood_control; |
128ea8ab | 937 | |
d594a14c AK |
938 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
939 | flags = 0; | |
940 | if (pi->attr->sticky) | |
941 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
942 | if (pi->attr->default_gw) | |
943 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
944 | if (is_evpn_prefix_ipaddr_v6(p) && | |
945 | pi->attr->router_flag) | |
946 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
947 | ret = bgp_zebra_send_remote_macip( | |
948 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
949 | mac_mobility_seqnum(pi->attr)); | |
950 | } else { | |
b16dd019 AK |
951 | switch (pi->attr->pmsi_tnl_type) { |
952 | case PMSI_TNLTYPE_INGR_REPL: | |
953 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
954 | break; | |
955 | ||
956 | case PMSI_TNLTYPE_PIM_SM: | |
957 | flood_control = VXLAN_FLOOD_PIM_SM; | |
958 | break; | |
959 | ||
960 | default: | |
961 | flood_control = VXLAN_FLOOD_DISABLED; | |
962 | break; | |
963 | } | |
964 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 965 | } |
128ea8ab | 966 | |
d62a17ae | 967 | return ret; |
128ea8ab | 968 | } |
969 | ||
970 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 971 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 972 | const struct prefix_evpn *p, |
d62a17ae | 973 | struct in_addr remote_vtep_ip) |
128ea8ab | 974 | { |
d62a17ae | 975 | int ret; |
128ea8ab | 976 | |
d62a17ae | 977 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
978 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 979 | 0, 0, 0); |
d62a17ae | 980 | else |
b16dd019 AK |
981 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
982 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 983 | |
d62a17ae | 984 | return ret; |
128ea8ab | 985 | } |
986 | ||
987 | /* | |
988 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
989 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
990 | * from peers. | |
991 | */ | |
d62a17ae | 992 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
993 | struct bgp_node *rn, | |
4b7e6066 | 994 | struct bgp_path_info *old_local) |
128ea8ab | 995 | { |
d62a17ae | 996 | struct bgp_node *global_rn; |
40381db7 | 997 | struct bgp_path_info *pi; |
d62a17ae | 998 | afi_t afi = AFI_L2VPN; |
999 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1000 | |
d62a17ae | 1001 | /* Locate route node in the global EVPN routing table. Note that |
1002 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1003 | * L3VPN routes. | |
1004 | */ | |
1005 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
b54892e0 | 1006 | bgp_node_get_prefix(rn), &vpn->prd); |
d62a17ae | 1007 | if (global_rn) { |
1008 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1009 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 1010 | |
d62a17ae | 1011 | /* Schedule for processing - withdraws to peers happen from |
1012 | * this table. | |
1013 | */ | |
40381db7 | 1014 | if (pi) |
d62a17ae | 1015 | bgp_process(bgp, global_rn, afi, safi); |
1016 | bgp_unlock_node(global_rn); | |
1017 | } | |
128ea8ab | 1018 | |
d62a17ae | 1019 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 1020 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 1021 | } |
1022 | ||
50f74cf1 | 1023 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
1024 | { | |
1025 | struct in_addr *ip; | |
1026 | ||
1027 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 1028 | |
1029 | ip->s_addr = vtep.s_addr; | |
1030 | return ip; | |
1031 | } | |
1032 | ||
1033 | static void es_vtep_free(struct in_addr *ip) | |
1034 | { | |
1035 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
1036 | } | |
1037 | ||
1038 | /* check if VTEP is already part of the list */ | |
1039 | static int is_vtep_present_in_list(struct list *list, | |
1040 | struct in_addr vtep) | |
1041 | { | |
1042 | struct listnode *node = NULL; | |
1043 | struct in_addr *tmp; | |
1044 | ||
1045 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
1046 | if (tmp->s_addr == vtep.s_addr) | |
1047 | return 1; | |
1048 | } | |
1049 | return 0; | |
1050 | } | |
1051 | ||
2bb9eff4 DS |
1052 | /* |
1053 | * Best path for ES route was changed, | |
1054 | * update the list of VTEPs for this ES | |
1055 | */ | |
bd494ec5 DS |
1056 | static int evpn_es_install_vtep(struct bgp *bgp, struct evpnes *es, |
1057 | const struct prefix_evpn *p, | |
50f74cf1 | 1058 | struct in_addr rvtep) |
1059 | { | |
1060 | struct in_addr *vtep_ip; | |
1061 | ||
1062 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1063 | return 0; | |
1064 | ||
1065 | ||
1066 | vtep_ip = es_vtep_new(rvtep); | |
1067 | if (vtep_ip) | |
1068 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
2bb9eff4 DS |
1072 | /* |
1073 | * Best path for ES route was changed, | |
1074 | * update the list of VTEPs for this ES | |
1075 | */ | |
50f74cf1 | 1076 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1077 | struct evpnes *es, | |
1078 | struct prefix_evpn *p, | |
1079 | struct in_addr rvtep) | |
1080 | { | |
1081 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1082 | struct in_addr *tmp; | |
1083 | ||
1084 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1085 | if (tmp->s_addr == rvtep.s_addr) { | |
1086 | es_vtep_free(tmp); | |
1087 | node_to_del = node; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | if (node_to_del) | |
1092 | list_delete_node(es->vtep_list, node_to_del); | |
1093 | ||
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * Calculate the best path for a ES(type-4) route. | |
1099 | */ | |
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, | |
b54892e0 | 1129 | (const struct prefix_evpn *)bgp_node_get_prefix(rn), |
50f74cf1 | 1130 | old_select->attr->nexthop); |
1131 | } | |
1defdda8 | 1132 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1133 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
50f74cf1 | 1134 | bgp_zebra_clear_route_change_flags(rn); |
1135 | return ret; | |
1136 | } | |
1137 | ||
1138 | /* If the user did a "clear" this flag will be set */ | |
1139 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1140 | ||
2bb9eff4 DS |
1141 | /* |
1142 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1143 | * into the zebra RIB. |
1144 | */ | |
1145 | if (old_select || new_select) | |
1146 | bgp_bump_version(rn); | |
1147 | ||
1148 | if (old_select) | |
18ee8310 | 1149 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1150 | if (new_select) { |
18ee8310 DS |
1151 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1152 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1153 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1154 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
50f74cf1 | 1155 | } |
1156 | ||
1157 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1158 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1159 | ret = evpn_es_install_vtep(bgp, es, | |
b54892e0 | 1160 | (const struct prefix_evpn *)bgp_node_get_prefix(rn), |
50f74cf1 | 1161 | new_select->attr->nexthop); |
1162 | } else { | |
1163 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1164 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 | 1165 | ret = evpn_es_uninstall_vtep( |
b54892e0 | 1166 | bgp, es, (struct prefix_evpn *)bgp_node_get_prefix(rn), |
2bb9eff4 | 1167 | old_select->attr->nexthop); |
50f74cf1 | 1168 | } |
1169 | ||
1170 | /* Clear any route change flags. */ | |
1171 | bgp_zebra_clear_route_change_flags(rn); | |
1172 | ||
18ee8310 | 1173 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1174 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1175 | bgp_path_info_reap(rn, old_select); |
50f74cf1 | 1176 | |
1177 | return ret; | |
1178 | } | |
1179 | ||
128ea8ab | 1180 | /* |
1181 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1182 | * if appropriate. | |
1183 | */ | |
d62a17ae | 1184 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1185 | struct bgp_node *rn) | |
1186 | { | |
4b7e6066 DS |
1187 | struct bgp_path_info *old_select, *new_select; |
1188 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1189 | afi_t afi = AFI_L2VPN; |
1190 | safi_t safi = SAFI_EVPN; | |
1191 | int ret = 0; | |
1192 | ||
1193 | /* Compute the best path. */ | |
1194 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1195 | afi, safi); | |
1196 | old_select = old_and_new.old; | |
1197 | new_select = old_and_new.new; | |
1198 | ||
1199 | /* If the best path hasn't changed - see if there is still something to | |
1200 | * update | |
1201 | * to zebra RIB. | |
1202 | */ | |
1203 | if (old_select && old_select == new_select | |
1204 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1205 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1206 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1207 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1208 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
d594a14c | 1209 | if (bgp_zebra_has_route_changed(rn, old_select)) |
996c9314 | 1210 | ret = evpn_zebra_install( |
b54892e0 | 1211 | bgp, vpn, (const struct prefix_evpn *)bgp_node_get_prefix(rn), |
d594a14c | 1212 | old_select); |
1defdda8 | 1213 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1214 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1215 | bgp_zebra_clear_route_change_flags(rn); |
1216 | return ret; | |
1217 | } | |
1218 | ||
1219 | /* If the user did a "clear" this flag will be set */ | |
1220 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1221 | ||
1222 | /* bestpath has changed; update relevant fields and install or uninstall | |
1223 | * into the zebra RIB. | |
1224 | */ | |
1225 | if (old_select || new_select) | |
1226 | bgp_bump_version(rn); | |
1227 | ||
1228 | if (old_select) | |
18ee8310 | 1229 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1230 | if (new_select) { |
18ee8310 DS |
1231 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1232 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1233 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1234 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1235 | } |
1236 | ||
1237 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1238 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
b54892e0 DS |
1239 | ret = evpn_zebra_install( |
1240 | bgp, vpn, (struct prefix_evpn *)bgp_node_get_prefix(rn), | |
1241 | new_select); | |
d594a14c | 1242 | |
d62a17ae | 1243 | /* If an old best existed and it was a "local" route, the only |
1244 | * reason | |
1245 | * it would be supplanted is due to MAC mobility procedures. So, | |
1246 | * we | |
1247 | * need to do an implicit delete and withdraw that route from | |
1248 | * peers. | |
1249 | */ | |
1250 | if (old_select && old_select->peer == bgp->peer_self | |
1251 | && old_select->type == ZEBRA_ROUTE_BGP | |
1252 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1253 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1254 | } else { | |
1255 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1256 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1257 | ret = evpn_zebra_uninstall( |
1258 | bgp, vpn, | |
1259 | (const struct prefix_evpn *)bgp_node_get_prefix( | |
1260 | rn), | |
1261 | old_select->attr->nexthop); | |
d62a17ae | 1262 | } |
1263 | ||
1264 | /* Clear any route change flags. */ | |
1265 | bgp_zebra_clear_route_change_flags(rn); | |
1266 | ||
18ee8310 | 1267 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1268 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1269 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1270 | |
1271 | return ret; | |
128ea8ab | 1272 | } |
1273 | ||
ead40654 MK |
1274 | /* |
1275 | * Return true if the local ri for this rn is of type gateway mac | |
1276 | */ | |
1277 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1278 | { | |
40381db7 DS |
1279 | struct bgp_path_info *tmp_pi = NULL; |
1280 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1281 | |
40381db7 | 1282 | local_pi = NULL; |
6f94b685 DS |
1283 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1284 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1285 | if (tmp_pi->peer == bgp->peer_self |
1286 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1287 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1288 | local_pi = tmp_pi; | |
ead40654 MK |
1289 | } |
1290 | ||
40381db7 | 1291 | if (!local_pi) |
ead40654 MK |
1292 | return 0; |
1293 | ||
40381db7 | 1294 | return local_pi->attr->default_gw; |
ead40654 MK |
1295 | } |
1296 | ||
c85c03c7 | 1297 | |
1298 | /* | |
1299 | * Return true if the local ri for this rn has sticky set | |
1300 | */ | |
d62a17ae | 1301 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1302 | { |
40381db7 DS |
1303 | struct bgp_path_info *tmp_pi; |
1304 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1305 | |
40381db7 | 1306 | local_pi = NULL; |
6f94b685 DS |
1307 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1308 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1309 | if (tmp_pi->peer == bgp->peer_self |
1310 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1311 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1312 | local_pi = tmp_pi; | |
d62a17ae | 1313 | } |
c85c03c7 | 1314 | |
40381db7 | 1315 | if (!local_pi) |
d62a17ae | 1316 | return 0; |
c85c03c7 | 1317 | |
40381db7 | 1318 | return local_pi->attr->sticky; |
c85c03c7 | 1319 | } |
1320 | ||
50f74cf1 | 1321 | /* |
1322 | * create or update EVPN type4 route entry. | |
1323 | * This could be in the ES table or the global table. | |
1324 | * TODO: handle remote ES (type4) routes as well | |
1325 | */ | |
4b7e6066 | 1326 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1327 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1328 | struct bgp_node *rn, struct attr *attr, |
1329 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1330 | int *route_changed) |
1331 | { | |
1332 | char buf[ESI_STR_LEN]; | |
1333 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1334 | struct bgp_path_info *tmp_pi = NULL; |
1335 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1336 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1337 | struct attr *attr_new = NULL; |
b54892e0 | 1338 | const struct prefix_evpn *evp = NULL; |
50f74cf1 | 1339 | |
1340 | *ri = NULL; | |
1341 | *route_changed = 1; | |
b54892e0 | 1342 | evp = (const struct prefix_evpn *)bgp_node_get_prefix(rn); |
50f74cf1 | 1343 | |
1344 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1345 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1346 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1347 | if (tmp_pi->peer == bgp->peer_self |
1348 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1349 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1350 | local_pi = tmp_pi; | |
1351 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1352 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1353 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1354 | remote_pi = tmp_pi; | |
50f74cf1 | 1355 | } |
1356 | ||
6f94b685 | 1357 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1358 | * An ES route has esi + vtep_ip as the key, |
1359 | * We shouldn't see the same route from any other vtep. | |
1360 | */ | |
40381db7 | 1361 | if (remote_pi) { |
af4c2728 | 1362 | flog_err( |
e50f7cfd | 1363 | EC_BGP_ES_INVALID, |
14454c9f DS |
1364 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1365 | bgp->vrf_id, | |
1366 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1367 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1368 | return -1; |
1369 | } | |
1370 | ||
40381db7 | 1371 | if (!local_pi && !add) |
50f74cf1 | 1372 | return 0; |
1373 | ||
1374 | /* create or update the entry */ | |
40381db7 | 1375 | if (!local_pi) { |
50f74cf1 | 1376 | |
1377 | /* Add or update attribute to hash */ | |
1378 | attr_new = bgp_attr_intern(attr); | |
1379 | ||
1380 | /* Create new route with its attribute. */ | |
40381db7 DS |
1381 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1382 | bgp->peer_self, attr_new, rn); | |
1383 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1384 | |
1385 | /* add the newly created path to the route-node */ | |
40381db7 | 1386 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1387 | } else { |
40381db7 DS |
1388 | tmp_pi = local_pi; |
1389 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1390 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1391 | *route_changed = 0; |
1392 | else { | |
1393 | /* The attribute has changed. | |
1394 | * Add (or update) attribute to hash. */ | |
1395 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1396 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1397 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1398 | |
1399 | /* Restore route, if needed. */ | |
40381db7 DS |
1400 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1401 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1402 | |
1403 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1404 | bgp_attr_unintern(&tmp_pi->attr); |
1405 | tmp_pi->attr = attr_new; | |
1406 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1407 | } |
1408 | } | |
1409 | ||
1410 | /* Return back the route entry. */ | |
40381db7 | 1411 | *ri = tmp_pi; |
50f74cf1 | 1412 | return 0; |
1413 | } | |
1414 | ||
1415 | /* update evpn es (type-4) route */ | |
1416 | static int update_evpn_type4_route(struct bgp *bgp, | |
1417 | struct evpnes *es, | |
1418 | struct prefix_evpn *p) | |
1419 | { | |
1420 | int ret = 0; | |
1421 | int route_changed = 0; | |
1422 | char buf[ESI_STR_LEN]; | |
1423 | char buf1[INET6_ADDRSTRLEN]; | |
1424 | afi_t afi = AFI_L2VPN; | |
1425 | safi_t safi = SAFI_EVPN; | |
1426 | struct attr attr; | |
1427 | struct attr *attr_new = NULL; | |
1428 | struct bgp_node *rn = NULL; | |
40381db7 | 1429 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1430 | |
1431 | memset(&attr, 0, sizeof(struct attr)); | |
1432 | ||
1433 | /* Build path-attribute for this route. */ | |
1434 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1435 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1436 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1437 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1438 | ||
1439 | /* Set up extended community. */ | |
1440 | build_evpn_type4_route_extcomm(es, &attr); | |
1441 | ||
1442 | /* First, create (or fetch) route node within the ESI. */ | |
1443 | /* NOTE: There is no RD here. */ | |
1444 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1445 | ||
1446 | /* Create or update route entry. */ | |
40381db7 DS |
1447 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1448 | &pi, &route_changed); | |
50f74cf1 | 1449 | if (ret != 0) { |
1c50c1c0 QY |
1450 | flog_err(EC_BGP_ES_INVALID, |
1451 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1452 | bgp->vrf_id, | |
1453 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1454 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1455 | } |
1456 | ||
40381db7 DS |
1457 | assert(pi); |
1458 | attr_new = pi->attr; | |
50f74cf1 | 1459 | |
1460 | /* Perform route selection; | |
1461 | * this is just to set the flags correctly | |
1462 | * as local route in the ES always wins. | |
1463 | */ | |
1464 | evpn_es_route_select_install(bgp, es, rn); | |
1465 | bgp_unlock_node(rn); | |
1466 | ||
1467 | /* If this is a new route or some attribute has changed, export the | |
1468 | * route to the global table. The route will be advertised to peers | |
1469 | * from there. Note that this table is a 2-level tree (RD-level + | |
1470 | * Prefix-level) similar to L3VPN routes. | |
1471 | */ | |
1472 | if (route_changed) { | |
40381db7 | 1473 | struct bgp_path_info *global_pi; |
50f74cf1 | 1474 | |
1475 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1476 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1477 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1478 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1479 | |
1480 | /* Schedule for processing and unlock node. */ | |
1481 | bgp_process(bgp, rn, afi, safi); | |
1482 | bgp_unlock_node(rn); | |
1483 | } | |
1484 | ||
1485 | /* Unintern temporary. */ | |
1486 | aspath_unintern(&attr.aspath); | |
1487 | return 0; | |
1488 | } | |
1489 | ||
5e53dce3 | 1490 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1491 | struct bgp *bgp_vrf, afi_t afi, |
1492 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1493 | struct attr *attr, int *route_changed) |
342dd0c6 | 1494 | { |
1495 | struct attr *attr_new = NULL; | |
40381db7 | 1496 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1497 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1498 | struct bgp_path_info *local_pi = NULL; |
1499 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1500 | |
5424b7ba | 1501 | *route_changed = 0; |
342dd0c6 | 1502 | /* locate the local route entry if any */ |
6f94b685 DS |
1503 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1504 | tmp_pi = tmp_pi->next) { | |
5e53dce3 | 1505 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1506 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1507 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1508 | local_pi = tmp_pi; | |
342dd0c6 | 1509 | } |
1510 | ||
2bb9eff4 | 1511 | /* |
0437e105 | 1512 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1513 | * Otherwise see if route attr has changed |
523cafc4 | 1514 | */ |
40381db7 | 1515 | if (!local_pi) { |
342dd0c6 | 1516 | |
5424b7ba MK |
1517 | /* route has changed as this is the first entry */ |
1518 | *route_changed = 1; | |
1519 | ||
342dd0c6 | 1520 | /* Add (or update) attribute to hash. */ |
1521 | attr_new = bgp_attr_intern(attr); | |
1522 | ||
1523 | /* create the route info from attribute */ | |
40381db7 | 1524 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
5e53dce3 | 1525 | bgp_evpn->peer_self, attr_new, rn); |
40381db7 | 1526 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1527 | |
b57ba6d2 | 1528 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1529 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1530 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1531 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1532 | pi->extra->num_labels = 1; | |
342dd0c6 | 1533 | |
1534 | /* add the route entry to route node*/ | |
40381db7 | 1535 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1536 | } else { |
1537 | ||
40381db7 DS |
1538 | tmp_pi = local_pi; |
1539 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1540 | |
1541 | /* attribute changed */ | |
1542 | *route_changed = 1; | |
1543 | ||
342dd0c6 | 1544 | /* The attribute has changed. */ |
1545 | /* Add (or update) attribute to hash. */ | |
1546 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1547 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1548 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1549 | |
1550 | /* Restore route, if needed. */ | |
40381db7 DS |
1551 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1552 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1553 | |
1554 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1555 | bgp_attr_unintern(&tmp_pi->attr); |
1556 | tmp_pi->attr = attr_new; | |
1557 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1558 | } |
1559 | } | |
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1564 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1565 | struct attr *src_attr) | |
342dd0c6 | 1566 | { |
1567 | afi_t afi = AFI_L2VPN; | |
1568 | safi_t safi = SAFI_EVPN; | |
1569 | struct attr attr; | |
1570 | struct bgp_node *rn = NULL; | |
5e53dce3 | 1571 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1572 | int route_changed = 0; |
342dd0c6 | 1573 | |
5e53dce3 T |
1574 | bgp_evpn = bgp_get_evpn(); |
1575 | if (!bgp_evpn) | |
faafdfa8 | 1576 | return 0; |
342dd0c6 | 1577 | |
2f69f6d3 | 1578 | /* Build path attribute for this route - use the source attr, if |
1579 | * present, else treat as locally originated. | |
1580 | */ | |
1581 | if (src_attr) | |
6f4f49b2 | 1582 | attr = *src_attr; |
2f69f6d3 | 1583 | else { |
1584 | memset(&attr, 0, sizeof(struct attr)); | |
1585 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1586 | } | |
5394a276 | 1587 | |
5394a276 CS |
1588 | /* Advertise Primary IP (PIP) is enabled, send individual |
1589 | * IP (default instance router-id) as nexthop. | |
1590 | * PIP is disabled or vrr interface is not present | |
27727001 | 1591 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1592 | */ |
1593 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1594 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1595 | attr.nexthop = bgp_vrf->originator_ip; | |
1596 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1597 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1598 | } else { |
27727001 CS |
1599 | /* copy sys rmac */ |
1600 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1601 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1602 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1603 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1604 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1605 | if (bgp_debug_zebra(NULL)) { | |
1606 | char buf1[PREFIX_STRLEN]; | |
1607 | ||
1608 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1609 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1610 | prefix2str(evp, buf1, sizeof(buf1))); | |
1611 | } | |
1612 | } | |
1613 | ||
1614 | if (bgp_debug_zebra(NULL)) { | |
1615 | char buf[ETHER_ADDR_STRLEN]; | |
1616 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1617 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1618 | |
1619 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1620 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1621 | prefix2str(evp, buf1, sizeof(buf1)), | |
1622 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1623 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1624 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1625 | } |
1626 | ||
342dd0c6 | 1627 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1628 | |
1629 | /* Setup RT and encap extended community */ | |
1630 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1631 | ||
1632 | /* get the route node in global table */ | |
5e53dce3 | 1633 | rn = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
996c9314 | 1634 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1635 | assert(rn); |
1636 | ||
1637 | /* create or update the route entry within the route node */ | |
5e53dce3 | 1638 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, rn, &attr, |
996c9314 | 1639 | &route_changed); |
342dd0c6 | 1640 | |
1641 | /* schedule for processing and unlock node */ | |
5424b7ba | 1642 | if (route_changed) { |
5e53dce3 | 1643 | bgp_process(bgp_evpn, rn, afi, safi); |
5424b7ba MK |
1644 | bgp_unlock_node(rn); |
1645 | } | |
342dd0c6 | 1646 | |
1647 | /* uninten temporary */ | |
5ee65f6f | 1648 | if (!src_attr) |
1649 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1650 | return 0; |
1651 | } | |
1652 | ||
128ea8ab | 1653 | /* |
1654 | * Create or update EVPN route entry. This could be in the VNI route table | |
1655 | * or the global route table. | |
1656 | */ | |
d62a17ae | 1657 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1658 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1659 | struct attr *attr, int add, |
40381db7 | 1660 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1661 | uint32_t seq) |
d62a17ae | 1662 | { |
40381db7 DS |
1663 | struct bgp_path_info *tmp_pi; |
1664 | struct bgp_path_info *local_pi; | |
d62a17ae | 1665 | struct attr *attr_new; |
b57ba6d2 | 1666 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1667 | uint32_t num_labels = 1; |
d62a17ae | 1668 | int route_change = 1; |
d7c0a89a | 1669 | uint8_t sticky = 0; |
b54892e0 | 1670 | const struct prefix_evpn *evp; |
d62a17ae | 1671 | |
40381db7 | 1672 | *pi = NULL; |
b54892e0 | 1673 | evp = (const struct prefix_evpn *)bgp_node_get_prefix(rn); |
b57ba6d2 | 1674 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1675 | |
f07e1c99 | 1676 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1677 | local_pi = NULL; |
6f94b685 DS |
1678 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1679 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1680 | if (tmp_pi->peer == bgp->peer_self |
1681 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1682 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1683 | local_pi = tmp_pi; | |
d62a17ae | 1684 | } |
1685 | ||
1686 | /* If route doesn't exist already, create a new one, if told to. | |
1687 | * Otherwise act based on whether the attributes of the route have | |
1688 | * changed or not. | |
1689 | */ | |
40381db7 | 1690 | if (!local_pi && !add) |
d62a17ae | 1691 | return 0; |
1692 | ||
f07e1c99 | 1693 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1694 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1695 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1696 | |
40381db7 | 1697 | if (!local_pi) { |
d62a17ae | 1698 | /* Add (or update) attribute to hash. */ |
1699 | attr_new = bgp_attr_intern(attr); | |
1700 | ||
1701 | /* Extract MAC mobility sequence number, if any. */ | |
1702 | attr_new->mm_seqnum = | |
1703 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1704 | attr_new->sticky = sticky; | |
1705 | ||
1706 | /* Create new route with its attribute. */ | |
40381db7 | 1707 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1708 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1709 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1710 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1711 | |
1712 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1713 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1714 | |
1715 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1716 | * Only attach second label if we are advertising two labels for | |
1717 | * type-2 routes. | |
1718 | */ | |
996c9314 LB |
1719 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1720 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1721 | vni_t l3vni; |
1722 | ||
1723 | l3vni = bgpevpn_get_l3vni(vpn); | |
1724 | if (l3vni) { | |
1725 | vni2label(l3vni, &label[1]); | |
1726 | num_labels++; | |
1727 | } | |
1728 | } | |
d62a17ae | 1729 | |
40381db7 DS |
1730 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1731 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1732 | /* Mark route as self type-2 route */ |
1733 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1734 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
40381db7 | 1735 | bgp_path_info_add(rn, tmp_pi); |
d62a17ae | 1736 | } else { |
40381db7 DS |
1737 | tmp_pi = local_pi; |
1738 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1739 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1740 | route_change = 0; |
1741 | else { | |
c48d9f5f MK |
1742 | /* |
1743 | * The attributes have changed, type-2 routes needs to | |
1744 | * be advertised with right labels. | |
1745 | */ | |
1746 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1747 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1748 | && CHECK_FLAG(vpn->flags, | |
1749 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1750 | vni_t l3vni; |
1751 | ||
1752 | l3vni = bgpevpn_get_l3vni(vpn); | |
1753 | if (l3vni) { | |
1754 | vni2label(l3vni, &label[1]); | |
1755 | num_labels++; | |
1756 | } | |
1757 | } | |
40381db7 DS |
1758 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1759 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1760 | |
d62a17ae | 1761 | /* The attribute has changed. */ |
1762 | /* Add (or update) attribute to hash. */ | |
1763 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1764 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1765 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1766 | |
f07e1c99 | 1767 | /* Extract MAC mobility sequence number, if any. */ |
1768 | attr_new->mm_seqnum = | |
1769 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1770 | attr_new->sticky = sticky; | |
1771 | ||
d62a17ae | 1772 | /* Restore route, if needed. */ |
40381db7 DS |
1773 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1774 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1775 | |
1776 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1777 | bgp_attr_unintern(&tmp_pi->attr); |
1778 | tmp_pi->attr = attr_new; | |
1779 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1780 | } |
1781 | } | |
1782 | ||
1783 | /* Return back the route entry. */ | |
40381db7 | 1784 | *pi = tmp_pi; |
d62a17ae | 1785 | return route_change; |
128ea8ab | 1786 | } |
1787 | ||
ec0ab544 AK |
1788 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1789 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1790 | { | |
1791 | struct bgp_path_info *tmp_ri; | |
1792 | struct bgp_path_info *curr_select = NULL; | |
1793 | ||
1794 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1795 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1796 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1797 | curr_select = tmp_ri; | |
1798 | break; | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1803 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1804 | evpn_zebra_install(bgp, vpn, | |
b54892e0 DS |
1805 | (const struct prefix_evpn *)bgp_node_get_prefix(rn), |
1806 | curr_select); | |
ec0ab544 AK |
1807 | } |
1808 | ||
6d8c603a AK |
1809 | /* |
1810 | * If the local route was not selected evict it and tell zebra to re-add | |
1811 | * the best remote dest. | |
1812 | * | |
1813 | * Typically a local path added by zebra is expected to be selected as | |
1814 | * best. In which case when a remote path wins as best (later) | |
1815 | * evpn_route_select_install itself evicts the older-local-best path. | |
1816 | * | |
1817 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1818 | * is possible that the local path is no longer the "older" best path. | |
1819 | * It is a path that was never designated as best and hence requires | |
1820 | * additional handling to prevent bgp from injecting and holding on to a | |
1821 | * non-best local path. | |
1822 | */ | |
1823 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1824 | struct bgpevpn *vpn, | |
1825 | struct bgp_node *rn, | |
9a8897aa | 1826 | struct bgp_path_info *local_pi) |
6d8c603a | 1827 | { |
6d8c603a | 1828 | /* local path was not picked as the winner; kick it out */ |
b54892e0 DS |
1829 | if (bgp_debug_zebra(NULL)) |
1830 | zlog_debug("evicting local evpn prefix %pRN as remote won", rn); | |
1831 | ||
6d8c603a AK |
1832 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1833 | bgp_path_info_reap(rn, local_pi); | |
1834 | ||
1835 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1836 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1837 | } |
1838 | ||
128ea8ab | 1839 | /* |
1840 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1841 | * and schedule for processing. | |
1842 | */ | |
d62a17ae | 1843 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1844 | struct prefix_evpn *p, uint8_t flags, |
1845 | uint32_t seq) | |
128ea8ab | 1846 | { |
d62a17ae | 1847 | struct bgp_node *rn; |
1848 | struct attr attr; | |
1849 | struct attr *attr_new; | |
1ec31309 | 1850 | int add_l3_ecomm = 0; |
40381db7 | 1851 | struct bgp_path_info *pi; |
d62a17ae | 1852 | afi_t afi = AFI_L2VPN; |
1853 | safi_t safi = SAFI_EVPN; | |
1854 | int route_change; | |
128ea8ab | 1855 | |
d62a17ae | 1856 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1857 | |
d62a17ae | 1858 | /* Build path-attribute for this route. */ |
1859 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1860 | attr.nexthop = vpn->originator_ip; | |
1861 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1862 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1863 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1864 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1865 | attr.router_flag = CHECK_FLAG(flags, |
1866 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1867 | |
1868 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1869 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1870 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1871 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1872 | } | |
be41eb68 | 1873 | |
1ec31309 | 1874 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1875 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1876 | uint8_t af_flags = 0; | |
1877 | ||
1878 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1879 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1880 | ||
1881 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
1882 | ||
1883 | if (bgp_debug_zebra(NULL)) { | |
1884 | char buf[ETHER_ADDR_STRLEN]; | |
1885 | char buf1[PREFIX_STRLEN]; | |
1886 | ||
1887 | zlog_debug("VRF %s vni %u type-2 route evp %s RMAC %s nexthop %s", | |
1888 | vpn->bgp_vrf ? | |
1889 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1890 | vpn->vni, | |
1891 | prefix2str(p, buf1, sizeof(buf1)), | |
1892 | prefix_mac2str(&attr.rmac, buf, | |
1893 | sizeof(buf)), | |
1894 | inet_ntoa(attr.mp_nexthop_global_in)); | |
1895 | } | |
1896 | } | |
1897 | ||
a21bd7a3 | 1898 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1899 | |
1ec31309 | 1900 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1901 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1902 | * these routes. | |
1903 | */ | |
1904 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1905 | (is_evpn_prefix_ipaddr_v4(p) || |
1906 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1907 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1908 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1909 | add_l3_ecomm = 1; |
1910 | ||
1911 | /* Set up extended community. */ | |
1912 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1913 | |
d62a17ae | 1914 | /* First, create (or fetch) route node within the VNI. */ |
1915 | /* NOTE: There is no RD here. */ | |
1916 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1917 | |
d62a17ae | 1918 | /* Create or update route entry. */ |
1919 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1920 | 1, &pi, flags, seq); |
1921 | assert(pi); | |
1922 | attr_new = pi->attr; | |
128ea8ab | 1923 | |
6d8c603a AK |
1924 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1925 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1926 | |
1927 | /* Perform route selection. Normally, the local route in the | |
1928 | * VNI is expected to win and be the best route. However, if | |
1929 | * there is a race condition where a host moved from local to | |
1930 | * remote and the remote route was received in BGP just prior | |
1931 | * to the local MACIP notification from zebra, the remote | |
1932 | * route would win, and we should evict the defunct local route | |
1933 | * and (re)install the remote route into zebra. | |
1934 | */ | |
d62a17ae | 1935 | evpn_route_select_install(bgp, vpn, rn); |
6d8c603a | 1936 | /* |
9a8897aa AK |
1937 | * If the new local route was not selected evict it and tell zebra |
1938 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1939 | * routes. | |
6d8c603a | 1940 | */ |
9a8897aa AK |
1941 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1942 | route_change = 0; | |
1943 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1944 | } | |
6d8c603a AK |
1945 | bgp_path_info_unlock(pi); |
1946 | ||
d62a17ae | 1947 | bgp_unlock_node(rn); |
128ea8ab | 1948 | |
d62a17ae | 1949 | /* If this is a new route or some attribute has changed, export the |
1950 | * route to the global table. The route will be advertised to peers | |
1951 | * from there. Note that this table is a 2-level tree (RD-level + | |
1952 | * Prefix-level) similar to L3VPN routes. | |
1953 | */ | |
1954 | if (route_change) { | |
40381db7 | 1955 | struct bgp_path_info *global_pi; |
128ea8ab | 1956 | |
d62a17ae | 1957 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1958 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1959 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1960 | &global_pi, flags, seq); |
128ea8ab | 1961 | |
d62a17ae | 1962 | /* Schedule for processing and unlock node. */ |
1963 | bgp_process(bgp, rn, afi, safi); | |
1964 | bgp_unlock_node(rn); | |
1965 | } | |
128ea8ab | 1966 | |
d62a17ae | 1967 | /* Unintern temporary. */ |
1968 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1969 | |
d62a17ae | 1970 | return 0; |
128ea8ab | 1971 | } |
1972 | ||
50f74cf1 | 1973 | /* |
1974 | * Delete EVPN route entry. | |
1975 | * The entry can be in ESI/VNI table or the global table. | |
1976 | */ | |
4b7e6066 | 1977 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1978 | struct bgp_node *rn, |
40381db7 | 1979 | struct bgp_path_info **pi) |
342dd0c6 | 1980 | { |
40381db7 | 1981 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1982 | |
40381db7 | 1983 | *pi = NULL; |
342dd0c6 | 1984 | |
50f74cf1 | 1985 | /* Now, find matching route. */ |
6f94b685 DS |
1986 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1987 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1988 | if (tmp_pi->peer == bgp->peer_self |
1989 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1990 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1991 | break; |
1992 | ||
40381db7 | 1993 | *pi = tmp_pi; |
342dd0c6 | 1994 | |
1995 | /* Mark route for delete. */ | |
40381db7 DS |
1996 | if (tmp_pi) |
1997 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1998 | } |
1999 | ||
50f74cf1 | 2000 | |
2001 | ||
2002 | /* Delete EVPN ES (type-4) route */ | |
2003 | static int delete_evpn_type4_route(struct bgp *bgp, | |
2004 | struct evpnes *es, | |
2005 | struct prefix_evpn *p) | |
2006 | { | |
2007 | afi_t afi = AFI_L2VPN; | |
2008 | safi_t safi = SAFI_EVPN; | |
40381db7 | 2009 | struct bgp_path_info *pi; |
50f74cf1 | 2010 | struct bgp_node *rn = NULL; /* rn in esi table */ |
2011 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
2012 | ||
2013 | /* First, locate the route node within the ESI. | |
2014 | * If it doesn't exist, ther is nothing to do. | |
2015 | * Note: there is no RD here. | |
2016 | */ | |
2017 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 2018 | if (!rn) |
50f74cf1 | 2019 | return 0; |
2020 | ||
2021 | /* Next, locate route node in the global EVPN routing table. | |
2022 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
2023 | */ | |
2024 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2025 | (struct prefix *)p, &es->prd); | |
2026 | if (global_rn) { | |
2027 | ||
2028 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2029 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 2030 | |
2031 | /* Schedule for processing - withdraws to peers happen from | |
2032 | * this table. | |
2033 | */ | |
40381db7 | 2034 | if (pi) |
50f74cf1 | 2035 | bgp_process(bgp, global_rn, afi, safi); |
2036 | bgp_unlock_node(global_rn); | |
2037 | } | |
2038 | ||
2039 | /* | |
2040 | * Delete route entry in the ESI route table. | |
2041 | * This can just be removed. | |
2042 | */ | |
40381db7 DS |
2043 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2044 | if (pi) | |
2045 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2046 | bgp_unlock_node(rn); |
2047 | return 0; | |
2048 | } | |
2049 | ||
342dd0c6 | 2050 | /* Delete EVPN type5 route */ |
996c9314 | 2051 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2052 | { |
2053 | afi_t afi = AFI_L2VPN; | |
2054 | safi_t safi = SAFI_EVPN; | |
2055 | struct bgp_node *rn = NULL; | |
40381db7 | 2056 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2057 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2058 | |
5e53dce3 T |
2059 | bgp_evpn = bgp_get_evpn(); |
2060 | if (!bgp_evpn) | |
faafdfa8 | 2061 | return 0; |
342dd0c6 | 2062 | |
2063 | /* locate the global route entry for this type-5 prefix */ | |
5e53dce3 | 2064 | rn = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
342dd0c6 | 2065 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
2066 | if (!rn) | |
2067 | return 0; | |
2068 | ||
5e53dce3 | 2069 | delete_evpn_route_entry(bgp_evpn, afi, safi, rn, &pi); |
40381db7 | 2070 | if (pi) |
5e53dce3 | 2071 | bgp_process(bgp_evpn, rn, afi, safi); |
342dd0c6 | 2072 | bgp_unlock_node(rn); |
2073 | return 0; | |
2074 | } | |
2075 | ||
128ea8ab | 2076 | /* |
2077 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2078 | * schedule for processing. | |
2079 | */ | |
d62a17ae | 2080 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2081 | struct prefix_evpn *p) | |
2082 | { | |
2083 | struct bgp_node *rn, *global_rn; | |
40381db7 | 2084 | struct bgp_path_info *pi; |
d62a17ae | 2085 | afi_t afi = AFI_L2VPN; |
2086 | safi_t safi = SAFI_EVPN; | |
2087 | ||
2088 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2089 | * there | |
2090 | * is nothing further to do. | |
2091 | */ | |
2092 | /* NOTE: There is no RD here. */ | |
2093 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2094 | if (!rn) | |
2095 | return 0; | |
2096 | ||
2097 | /* Next, locate route node in the global EVPN routing table. Note that | |
2098 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2099 | * L3VPN routes. | |
2100 | */ | |
2101 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2102 | (struct prefix *)p, &vpn->prd); | |
2103 | if (global_rn) { | |
2104 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2105 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 2106 | |
2107 | /* Schedule for processing - withdraws to peers happen from | |
2108 | * this table. | |
2109 | */ | |
40381db7 | 2110 | if (pi) |
d62a17ae | 2111 | bgp_process(bgp, global_rn, afi, safi); |
2112 | bgp_unlock_node(global_rn); | |
2113 | } | |
2114 | ||
2115 | /* Delete route entry in the VNI route table. This can just be removed. | |
2116 | */ | |
40381db7 | 2117 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 2118 | if (pi) { |
40381db7 | 2119 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
2120 | evpn_route_select_install(bgp, vpn, rn); |
2121 | } | |
d62a17ae | 2122 | bgp_unlock_node(rn); |
2123 | ||
2124 | return 0; | |
128ea8ab | 2125 | } |
2126 | ||
2127 | /* | |
2128 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2129 | * be scheduled for advertise to peers. | |
2130 | */ | |
d62a17ae | 2131 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2132 | { | |
2133 | afi_t afi; | |
2134 | safi_t safi; | |
2135 | struct bgp_node *rn; | |
40381db7 | 2136 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2137 | struct attr attr; |
d62a17ae | 2138 | struct attr *attr_new; |
f07e1c99 | 2139 | uint32_t seq; |
1ec31309 | 2140 | int add_l3_ecomm = 0; |
d62a17ae | 2141 | |
2142 | afi = AFI_L2VPN; | |
2143 | safi = SAFI_EVPN; | |
d62a17ae | 2144 | |
2145 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2146 | * routes updated, update corresponding entry in the global table too. | |
2147 | */ | |
2148 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2149 | rn = bgp_route_next(rn)) { | |
b54892e0 | 2150 | const struct prefix_evpn *evp = (const struct prefix_evpn *)bgp_node_get_prefix(rn); |
d62a17ae | 2151 | struct bgp_node *rd_rn; |
40381db7 | 2152 | struct bgp_path_info *global_pi; |
d62a17ae | 2153 | |
2154 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2155 | continue; | |
2156 | ||
f07e1c99 | 2157 | /* Identify local route. */ |
6f94b685 DS |
2158 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2159 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2160 | if (tmp_pi->peer == bgp->peer_self |
2161 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2162 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2163 | break; |
7ec156a9 | 2164 | } |
d62a17ae | 2165 | |
40381db7 | 2166 | if (!tmp_pi) |
d62a17ae | 2167 | continue; |
2168 | ||
f07e1c99 | 2169 | /* |
2170 | * Build attribute per local route as the MAC mobility and | |
2171 | * some other values could differ for different routes. The | |
2172 | * attributes will be shared in the hash table. | |
2173 | */ | |
2174 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2175 | attr.nexthop = vpn->originator_ip; | |
2176 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2177 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
0ca10580 CS |
2178 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, |
2179 | tmp_pi->extra->af_flags); | |
f07e1c99 | 2180 | |
2181 | if (evpn_route_is_sticky(bgp, rn)) | |
2182 | attr.sticky = 1; | |
2183 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2184 | attr.default_gw = 1; | |
2185 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2186 | attr.router_flag = 1; | |
2187 | } | |
2188 | ||
0ca10580 CS |
2189 | if (bgp_debug_zebra(NULL)) { |
2190 | char buf[ETHER_ADDR_STRLEN]; | |
2191 | char buf1[PREFIX_STRLEN]; | |
2192 | ||
2193 | zlog_debug("VRF %s vni %u evp %s RMAC %s nexthop %s", | |
2194 | vpn->bgp_vrf ? | |
2195 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
2196 | vpn->vni, | |
2197 | prefix2str(evp, buf1, sizeof(buf1)), | |
2198 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
2199 | inet_ntoa(attr.mp_nexthop_global_in)); | |
2200 | } | |
2201 | ||
f07e1c99 | 2202 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if |
2203 | * using L3 VNI for type-2 routes also. | |
2204 | */ | |
2205 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2206 | !IN6_IS_ADDR_LINKLOCAL( |
2207 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2208 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2209 | bgpevpn_get_l3vni(vpn)) | |
2210 | add_l3_ecomm = 1; | |
2211 | ||
2212 | /* Set up extended community. */ | |
2213 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2214 | ||
40381db7 | 2215 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2216 | |
2217 | /* Update the route entry. */ | |
40381db7 DS |
2218 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2219 | 0, seq); | |
f07e1c99 | 2220 | |
7ab604ab CS |
2221 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2222 | bgp_path_info_lock(pi); | |
2223 | ||
2224 | /* Perform route selection. Normally, the local route in the | |
2225 | * VNI is expected to win and be the best route. However, | |
2226 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2227 | * that causes best selection to be based on next hop), a | |
2228 | * remote route could win. If the local route is the best, | |
2229 | * ensure it is updated in the global EVPN route table and | |
2230 | * advertised to peers; otherwise, ensure it is evicted and | |
2231 | * (re)install the remote route into zebra. | |
d62a17ae | 2232 | */ |
2233 | evpn_route_select_install(bgp, vpn, rn); | |
7ab604ab CS |
2234 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
2235 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
2236 | /* unlock pi */ | |
2237 | bgp_path_info_unlock(pi); | |
2238 | } else { | |
2239 | attr_new = pi->attr; | |
2240 | /* unlock pi */ | |
2241 | bgp_path_info_unlock(pi); | |
2242 | ||
2243 | /* Update route in global routing table. */ | |
2244 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2245 | (struct prefix *)evp, &vpn->prd); | |
2246 | assert(rd_rn); | |
2247 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, | |
2248 | attr_new, 0, &global_pi, 0, | |
2249 | mac_mobility_seqnum(attr_new)); | |
2250 | ||
2251 | /* Schedule for processing and unlock node. */ | |
2252 | bgp_process(bgp, rd_rn, afi, safi); | |
2253 | bgp_unlock_node(rd_rn); | |
2254 | } | |
d62a17ae | 2255 | |
f07e1c99 | 2256 | /* Unintern temporary. */ |
2257 | aspath_unintern(&attr.aspath); | |
2258 | ||
2259 | } | |
d62a17ae | 2260 | |
2261 | return 0; | |
128ea8ab | 2262 | } |
2263 | ||
2264 | /* | |
2265 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2266 | * global routing table. These are also scheduled for withdraw from peers. | |
2267 | */ | |
d62a17ae | 2268 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2269 | { |
d62a17ae | 2270 | afi_t afi; |
2271 | safi_t safi; | |
2272 | struct bgp_node *rdrn, *rn; | |
2273 | struct bgp_table *table; | |
40381db7 | 2274 | struct bgp_path_info *pi; |
128ea8ab | 2275 | |
d62a17ae | 2276 | afi = AFI_L2VPN; |
2277 | safi = SAFI_EVPN; | |
128ea8ab | 2278 | |
d62a17ae | 2279 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2280 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2281 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2282 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
b54892e0 | 2283 | const struct prefix_evpn *evp = (const struct prefix_evpn *)bgp_node_get_prefix(rn); |
128ea8ab | 2284 | |
d62a17ae | 2285 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2286 | continue; | |
128ea8ab | 2287 | |
40381db7 DS |
2288 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2289 | if (pi) | |
d62a17ae | 2290 | bgp_process(bgp, rn, afi, safi); |
2291 | } | |
2292 | } | |
128ea8ab | 2293 | |
d62a17ae | 2294 | /* Unlock RD node. */ |
2295 | if (rdrn) | |
2296 | bgp_unlock_node(rdrn); | |
128ea8ab | 2297 | |
d62a17ae | 2298 | return 0; |
128ea8ab | 2299 | } |
2300 | ||
2301 | /* | |
2302 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2303 | * table as well as the per-VNI route table. | |
2304 | */ | |
d62a17ae | 2305 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2306 | { |
d62a17ae | 2307 | afi_t afi; |
2308 | safi_t safi; | |
2309 | struct bgp_node *rn; | |
40381db7 | 2310 | struct bgp_path_info *pi; |
128ea8ab | 2311 | |
d62a17ae | 2312 | afi = AFI_L2VPN; |
2313 | safi = SAFI_EVPN; | |
128ea8ab | 2314 | |
d62a17ae | 2315 | /* First, walk the global route table for this VNI's type-2 local |
2316 | * routes. | |
2317 | * EVPN routes are a 2-level table, first get the RD table. | |
2318 | */ | |
2319 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2320 | |
d62a17ae | 2321 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2322 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2323 | rn = bgp_route_next(rn)) { | |
b54892e0 | 2324 | const struct prefix_evpn *evp = (const struct prefix_evpn *)bgp_node_get_prefix(rn); |
128ea8ab | 2325 | |
d62a17ae | 2326 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2327 | continue; | |
128ea8ab | 2328 | |
40381db7 | 2329 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2330 | |
d62a17ae | 2331 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2332 | if (pi) |
2333 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2334 | } |
128ea8ab | 2335 | |
d62a17ae | 2336 | return 0; |
128ea8ab | 2337 | } |
2338 | ||
50f74cf1 | 2339 | /* |
2340 | * Delete all routes in per ES route-table | |
2341 | */ | |
2342 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2343 | { | |
2344 | struct bgp_node *rn; | |
40381db7 | 2345 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2346 | |
2347 | /* Walk this ES's route table and delete all routes. */ | |
2348 | for (rn = bgp_table_top(es->route_table); rn; | |
2349 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2350 | for (pi = bgp_node_get_bgp_path_info(rn); |
2351 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2352 | bgp_path_info_delete(rn, pi); |
2353 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2354 | } |
2355 | } | |
2356 | ||
2357 | return 0; | |
2358 | } | |
2359 | ||
128ea8ab | 2360 | /* |
2361 | * Delete all routes in the per-VNI route table. | |
2362 | */ | |
d62a17ae | 2363 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2364 | { |
d62a17ae | 2365 | struct bgp_node *rn; |
40381db7 | 2366 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2367 | |
d62a17ae | 2368 | /* Walk this VNI's route table and delete all routes. */ |
2369 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2370 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2371 | for (pi = bgp_node_get_bgp_path_info(rn); |
2372 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2373 | bgp_path_info_delete(rn, pi); |
2374 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2375 | } |
2376 | } | |
128ea8ab | 2377 | |
d62a17ae | 2378 | return 0; |
128ea8ab | 2379 | } |
2380 | ||
833b8a50 AK |
2381 | /* BUM traffic flood mode per-l2-vni */ |
2382 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2383 | struct bgpevpn *vpn) | |
2384 | { | |
2385 | /* if flooding has been globally disabled per-vni mode is | |
2386 | * not relevant | |
2387 | */ | |
2388 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2389 | return VXLAN_FLOOD_DISABLED; | |
2390 | ||
2391 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2392 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2393 | return VXLAN_FLOOD_PIM_SM; | |
2394 | ||
2395 | /* default is ingress replication */ | |
2396 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2397 | } | |
2398 | ||
128ea8ab | 2399 | /* |
2400 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2401 | * export RT getting modified or change to tunnel IP. Note that these | |
2402 | * situations need the route in the per-VNI table as well as the global | |
2403 | * table to be updated (as attributes change). | |
2404 | */ | |
0ca10580 | 2405 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2406 | { |
d62a17ae | 2407 | int ret; |
2408 | struct prefix_evpn p; | |
128ea8ab | 2409 | |
d62a17ae | 2410 | /* Update and advertise the type-3 route (only one) followed by the |
2411 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2412 | * |
2413 | * RT-3 only if doing head-end replication | |
d62a17ae | 2414 | */ |
833b8a50 AK |
2415 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2416 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
2417 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2418 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2419 | if (ret) | |
2420 | return ret; | |
2421 | } | |
128ea8ab | 2422 | |
d62a17ae | 2423 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2424 | } |
2425 | ||
50f74cf1 | 2426 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2427 | * Also remove all other routes from the per ES table. | |
2428 | * Invoked when ES is deleted. | |
2429 | */ | |
2430 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2431 | { | |
2432 | int ret; | |
2433 | char buf[ESI_STR_LEN]; | |
2434 | struct prefix_evpn p; | |
2435 | ||
2436 | /* Delete and withdraw locally learnt ES route */ | |
2437 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2438 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2439 | if (ret) { | |
e50f7cfd | 2440 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2441 | "%u failed to delete type-4 route for ESI %s", |
2442 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2443 | } |
2444 | ||
2445 | /* Delete all routes from per ES table */ | |
2446 | return delete_all_es_routes(bgp, es); | |
2447 | } | |
2448 | ||
128ea8ab | 2449 | /* |
2450 | * Delete (and withdraw) local routes for specified VNI from the global | |
2451 | * table and per-VNI table. After this, remove all other routes from | |
2452 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2453 | * (advertise-all-vni) being disabled. | |
2454 | */ | |
d62a17ae | 2455 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2456 | { |
d62a17ae | 2457 | int ret; |
2458 | struct prefix_evpn p; | |
128ea8ab | 2459 | |
d62a17ae | 2460 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2461 | * followed by type-3 routes (only one) - for this VNI. | |
2462 | */ | |
2463 | ret = delete_all_type2_routes(bgp, vpn); | |
2464 | if (ret) | |
2465 | return ret; | |
128ea8ab | 2466 | |
d62a17ae | 2467 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2468 | ret = delete_evpn_route(bgp, vpn, &p); | |
2469 | if (ret) | |
2470 | return ret; | |
128ea8ab | 2471 | |
d62a17ae | 2472 | /* Delete all routes from the per-VNI table. */ |
2473 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2474 | } |
2475 | ||
76d07c7a AK |
2476 | /* |
2477 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2478 | * remove the type-3 route if any. A new type-3 route will be generated | |
2479 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2480 | */ | |
2481 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2482 | struct in_addr mcast_grp) | |
2483 | { | |
2484 | struct prefix_evpn p; | |
2485 | ||
2486 | vpn->mcast_grp = mcast_grp; | |
2487 | ||
2488 | if (is_vni_live(vpn)) { | |
2489 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2490 | delete_evpn_route(bgp, vpn, &p); | |
2491 | } | |
2492 | ||
2493 | return 0; | |
2494 | } | |
2495 | ||
128ea8ab | 2496 | /* |
d1911c26 | 2497 | * There is a tunnel endpoint IP address change for this VNI, delete |
2498 | * prior type-3 route (if needed) and update. | |
2499 | * Note: Route re-advertisement happens elsewhere after other processing | |
2500 | * other changes. | |
128ea8ab | 2501 | */ |
d62a17ae | 2502 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2503 | struct in_addr originator_ip) | |
128ea8ab | 2504 | { |
d62a17ae | 2505 | struct prefix_evpn p; |
128ea8ab | 2506 | |
ddd16ed5 MK |
2507 | /* If VNI is not live, we only need to update the originator ip */ |
2508 | if (!is_vni_live(vpn)) { | |
2509 | vpn->originator_ip = originator_ip; | |
2510 | return 0; | |
2511 | } | |
2512 | ||
db0e1937 MK |
2513 | /* Update the tunnel-ip hash */ |
2514 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2515 | bgp_tip_add(bgp, &originator_ip); | |
2516 | ||
2517 | /* filter routes as martian nexthop db has changed */ | |
2518 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2519 | ||
d62a17ae | 2520 | /* Need to withdraw type-3 route as the originator IP is part |
2521 | * of the key. | |
2522 | */ | |
2523 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2524 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2525 | |
d62a17ae | 2526 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2527 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2528 | return 0; |
128ea8ab | 2529 | } |
2530 | ||
c011a88b DS |
2531 | static struct bgp_path_info * |
2532 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
4e72ff72 | 2533 | struct bgp_node *rn, struct attr *attr) |
6b742349 DS |
2534 | { |
2535 | struct attr *attr_new; | |
2536 | struct bgp_path_info *pi; | |
2537 | ||
2538 | /* Add (or update) attribute to hash. */ | |
4e72ff72 | 2539 | attr_new = bgp_attr_intern(attr); |
6b742349 DS |
2540 | |
2541 | /* Create new route with its attribute. */ | |
2542 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2543 | attr_new, rn); | |
2544 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2545 | bgp_path_info_extra_get(pi); | |
2546 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2547 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2548 | if (parent_pi->extra) { | |
2549 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2550 | sizeof(pi->extra->label)); | |
2551 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
2552 | } | |
2553 | bgp_path_info_add(rn, pi); | |
c011a88b DS |
2554 | |
2555 | return pi; | |
6b742349 DS |
2556 | } |
2557 | ||
50f74cf1 | 2558 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2559 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
bd494ec5 | 2560 | const struct prefix_evpn *p, |
40381db7 | 2561 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2562 | { |
2563 | int ret = 0; | |
2564 | struct bgp_node *rn = NULL; | |
40381db7 | 2565 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2566 | struct attr *attr_new = NULL; |
2567 | ||
2568 | /* Create (or fetch) route within the VNI. | |
2569 | * NOTE: There is no RD here. | |
2570 | */ | |
2571 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2572 | ||
2573 | /* Check if route entry is already present. */ | |
6f94b685 | 2574 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2575 | if (pi->extra |
2576 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2577 | break; |
2578 | ||
40381db7 | 2579 | if (!pi) { |
50f74cf1 | 2580 | /* Add (or update) attribute to hash. */ |
40381db7 | 2581 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2582 | |
2583 | /* Create new route with its attribute. */ | |
40381db7 DS |
2584 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2585 | parent_pi->peer, attr_new, rn); | |
2586 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2587 | bgp_path_info_extra_get(pi); | |
f4d7cb0e DS |
2588 | pi->extra->parent = bgp_path_info_lock(parent_pi); |
2589 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
40381db7 | 2590 | bgp_path_info_add(rn, pi); |
50f74cf1 | 2591 | } else { |
40381db7 DS |
2592 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2593 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2594 | bgp_unlock_node(rn); |
2595 | return 0; | |
2596 | } | |
2597 | /* The attribute has changed. */ | |
2598 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2599 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2600 | |
2601 | /* Restore route, if needed. */ | |
40381db7 DS |
2602 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2603 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2604 | |
2605 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2606 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2607 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2608 | |
2609 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2610 | bgp_attr_unintern(&pi->attr); |
2611 | pi->attr = attr_new; | |
2612 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2613 | } |
2614 | ||
2615 | /* Perform route selection and update zebra, if required. */ | |
2616 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2617 | return ret; | |
2618 | } | |
2619 | ||
d3135ba3 | 2620 | /* |
2621 | * Install route entry into the VRF routing table and invoke route selection. | |
2622 | */ | |
2623 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2624 | const struct prefix_evpn *evp, |
40381db7 | 2625 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2626 | { |
2627 | struct bgp_node *rn; | |
40381db7 | 2628 | struct bgp_path_info *pi; |
1ec31309 | 2629 | struct attr attr; |
d3135ba3 | 2630 | struct attr *attr_new; |
c4edf708 | 2631 | int ret = 0; |
d3135ba3 | 2632 | struct prefix p; |
2633 | struct prefix *pp = &p; | |
2634 | afi_t afi = 0; | |
2635 | safi_t safi = 0; | |
1eb88002 MK |
2636 | char buf[PREFIX_STRLEN]; |
2637 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2638 | |
2639 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2640 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2641 | |
1eb88002 | 2642 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2643 | zlog_debug( |
1ee069db | 2644 | "import evpn prefix %s as ip prefix %s in vrf %s", |
996c9314 LB |
2645 | prefix2str(evp, buf, sizeof(buf)), |
2646 | prefix2str(pp, buf1, sizeof(buf)), | |
2647 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2648 | } |
2649 | ||
d3135ba3 | 2650 | /* Create (or fetch) route within the VRF. */ |
2651 | /* NOTE: There is no RD here. */ | |
3714a385 | 2652 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2653 | afi = AFI_IP; |
2654 | safi = SAFI_UNICAST; | |
2655 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2656 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2657 | afi = AFI_IP6; |
2658 | safi = SAFI_UNICAST; | |
2659 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2660 | } else | |
2661 | return 0; | |
2662 | ||
1ec31309 | 2663 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2664 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2665 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2666 | * address for the rest of the code to flow through. In the case of IPv4, | |
2667 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2668 | */ |
6f4f49b2 | 2669 | attr = *parent_pi->attr; |
1ec31309 | 2670 | if (afi == AFI_IP6) |
2671 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2672 | else |
2673 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2674 | |
d3135ba3 | 2675 | /* Check if route entry is already present. */ |
6f94b685 | 2676 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2677 | if (pi->extra |
2678 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2679 | break; |
2680 | ||
6b742349 | 2681 | if (!pi) |
4e72ff72 | 2682 | pi = bgp_create_evpn_bgp_path_info(parent_pi, rn, &attr); |
6b742349 | 2683 | else { |
40381db7 DS |
2684 | if (attrhash_cmp(pi->attr, &attr) |
2685 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2686 | bgp_unlock_node(rn); |
2687 | return 0; | |
2688 | } | |
2689 | /* The attribute has changed. */ | |
2690 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2691 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2692 | |
2693 | /* Restore route, if needed. */ | |
40381db7 DS |
2694 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2695 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2696 | |
2697 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2698 | if ((afi == AFI_IP |
2699 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2700 | || (afi == AFI_IP6 | |
2701 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2702 | &attr_new->mp_nexthop_global))) | |
2703 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2704 | |
a9f8ad9f | 2705 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2706 | /* Unintern existing, set to new. */ |
40381db7 DS |
2707 | bgp_attr_unintern(&pi->attr); |
2708 | pi->attr = attr_new; | |
2709 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2710 | } |
d846e917 PG |
2711 | /* as it is an importation, change nexthop */ |
2712 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ANNC_NH_SELF); | |
d3135ba3 | 2713 | |
b54892e0 DS |
2714 | bgp_aggregate_increment(bgp_vrf, bgp_node_get_prefix(rn), pi, afi, |
2715 | safi); | |
b49cdf4c | 2716 | |
d3135ba3 | 2717 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2718 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2719 | |
7452e879 | 2720 | /* Process for route leaking. */ |
2721 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2722 | ||
3c11d70a CS |
2723 | bgp_unlock_node(rn); |
2724 | ||
d3135ba3 | 2725 | return ret; |
2726 | } | |
2727 | ||
128ea8ab | 2728 | /* |
2729 | * Install route entry into the VNI routing table and invoke route selection. | |
2730 | */ | |
d62a17ae | 2731 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2732 | const struct prefix_evpn *p, |
40381db7 | 2733 | struct bgp_path_info *parent_pi) |
d62a17ae | 2734 | { |
2735 | struct bgp_node *rn; | |
40381db7 | 2736 | struct bgp_path_info *pi; |
d62a17ae | 2737 | struct attr *attr_new; |
2738 | int ret; | |
2739 | ||
2740 | /* Create (or fetch) route within the VNI. */ | |
2741 | /* NOTE: There is no RD here. */ | |
2742 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2743 | ||
2744 | /* Check if route entry is already present. */ | |
6f94b685 | 2745 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2746 | if (pi->extra |
2747 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2748 | break; |
2749 | ||
bd0254af MS |
2750 | if (!pi) { |
2751 | /* Create an info */ | |
4e72ff72 AD |
2752 | (void)bgp_create_evpn_bgp_path_info(parent_pi, rn, |
2753 | parent_pi->attr); | |
bd0254af | 2754 | } else { |
40381db7 DS |
2755 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2756 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2757 | bgp_unlock_node(rn); |
2758 | return 0; | |
2759 | } | |
2760 | /* The attribute has changed. */ | |
2761 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2762 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2763 | |
50f74cf1 | 2764 | /* Restore route, if needed. */ |
40381db7 DS |
2765 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2766 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2767 | |
2768 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2769 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2770 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2771 | |
2772 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2773 | bgp_attr_unintern(&pi->attr); |
2774 | pi->attr = attr_new; | |
2775 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2776 | } |
2777 | ||
2778 | /* Perform route selection and update zebra, if required. */ | |
2779 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2780 | ||
a97a1e11 CS |
2781 | bgp_unlock_node(rn); |
2782 | ||
50f74cf1 | 2783 | return ret; |
2784 | } | |
2785 | ||
2786 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2787 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
bd494ec5 | 2788 | const struct prefix_evpn *p, |
40381db7 | 2789 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2790 | { |
2791 | int ret; | |
2792 | struct bgp_node *rn; | |
40381db7 | 2793 | struct bgp_path_info *pi; |
50f74cf1 | 2794 | |
2795 | if (!es->route_table) | |
2796 | return 0; | |
2797 | ||
2798 | /* Locate route within the ESI. | |
2799 | * NOTE: There is no RD here. | |
2800 | */ | |
2801 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2802 | if (!rn) | |
2803 | return 0; | |
2804 | ||
2805 | /* Find matching route entry. */ | |
6f94b685 | 2806 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2807 | if (pi->extra |
2808 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2809 | break; |
d62a17ae | 2810 | |
40381db7 | 2811 | if (!pi) |
50f74cf1 | 2812 | return 0; |
d62a17ae | 2813 | |
50f74cf1 | 2814 | /* Mark entry for deletion */ |
40381db7 | 2815 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2816 | |
2817 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2818 | ret = evpn_es_route_select_install(bgp, es, rn); |
2819 | ||
2820 | /* Unlock route node. */ | |
2821 | bgp_unlock_node(rn); | |
d62a17ae | 2822 | |
2823 | return ret; | |
128ea8ab | 2824 | } |
2825 | ||
d3135ba3 | 2826 | /* |
2827 | * Uninstall route entry from the VRF routing table and send message | |
2828 | * to zebra, if appropriate. | |
2829 | */ | |
2830 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2831 | const struct prefix_evpn *evp, |
40381db7 | 2832 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2833 | { |
2834 | struct bgp_node *rn; | |
40381db7 | 2835 | struct bgp_path_info *pi; |
c4edf708 | 2836 | int ret = 0; |
d3135ba3 | 2837 | struct prefix p; |
2838 | struct prefix *pp = &p; | |
2839 | afi_t afi = 0; | |
2840 | safi_t safi = 0; | |
1eb88002 MK |
2841 | char buf[PREFIX_STRLEN]; |
2842 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2843 | |
2844 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2845 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2846 | |
1eb88002 | 2847 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2848 | zlog_debug( |
2849 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2850 | prefix2str(evp, buf, sizeof(buf)), | |
2851 | prefix2str(pp, buf1, sizeof(buf)), | |
2852 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2853 | } |
2854 | ||
d3135ba3 | 2855 | /* Locate route within the VRF. */ |
2856 | /* NOTE: There is no RD here. */ | |
3714a385 | 2857 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2858 | afi = AFI_IP; |
2859 | safi = SAFI_UNICAST; | |
2860 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2861 | } else { | |
2862 | afi = AFI_IP6; | |
2863 | safi = SAFI_UNICAST; | |
2864 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2865 | } | |
2866 | ||
2867 | if (!rn) | |
2868 | return 0; | |
2869 | ||
2870 | /* Find matching route entry. */ | |
6f94b685 | 2871 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2872 | if (pi->extra |
2873 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2874 | break; |
2875 | ||
40381db7 | 2876 | if (!pi) |
d3135ba3 | 2877 | return 0; |
2878 | ||
7452e879 | 2879 | /* Process for route leaking. */ |
2880 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2881 | ||
b54892e0 DS |
2882 | bgp_aggregate_decrement(bgp_vrf, bgp_node_get_prefix(rn), pi, afi, |
2883 | safi); | |
4c7a11d5 | 2884 | |
d3135ba3 | 2885 | /* Mark entry for deletion */ |
40381db7 | 2886 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2887 | |
2888 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2889 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2890 | |
2891 | /* Unlock route node. */ | |
2892 | bgp_unlock_node(rn); | |
2893 | ||
2894 | return ret; | |
2895 | } | |
2896 | ||
128ea8ab | 2897 | /* |
2898 | * Uninstall route entry from the VNI routing table and send message | |
2899 | * to zebra, if appropriate. | |
2900 | */ | |
d62a17ae | 2901 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2902 | const struct prefix_evpn *p, |
40381db7 | 2903 | struct bgp_path_info *parent_pi) |
128ea8ab | 2904 | { |
d62a17ae | 2905 | struct bgp_node *rn; |
40381db7 | 2906 | struct bgp_path_info *pi; |
d62a17ae | 2907 | int ret; |
128ea8ab | 2908 | |
d62a17ae | 2909 | /* Locate route within the VNI. */ |
2910 | /* NOTE: There is no RD here. */ | |
2911 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2912 | if (!rn) | |
2913 | return 0; | |
128ea8ab | 2914 | |
d62a17ae | 2915 | /* Find matching route entry. */ |
6f94b685 | 2916 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2917 | if (pi->extra |
2918 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2919 | break; |
128ea8ab | 2920 | |
40381db7 | 2921 | if (!pi) |
d62a17ae | 2922 | return 0; |
128ea8ab | 2923 | |
d62a17ae | 2924 | /* Mark entry for deletion */ |
40381db7 | 2925 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2926 | |
d62a17ae | 2927 | /* Perform route selection and update zebra, if required. */ |
2928 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2929 | |
d62a17ae | 2930 | /* Unlock route node. */ |
2931 | bgp_unlock_node(rn); | |
128ea8ab | 2932 | |
d62a17ae | 2933 | return ret; |
128ea8ab | 2934 | } |
2935 | ||
50f74cf1 | 2936 | /* |
2937 | * Given a prefix, see if it belongs to ES. | |
2938 | */ | |
bd494ec5 | 2939 | static int is_prefix_matching_for_es(const struct prefix_evpn *p, |
50f74cf1 | 2940 | struct evpnes *es) |
2941 | { | |
2942 | /* if not an ES route return false */ | |
2943 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2944 | return 0; | |
2945 | ||
2946 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2947 | return 1; | |
2948 | ||
2949 | return 0; | |
2950 | } | |
2951 | ||
5ba238b7 MK |
2952 | /* |
2953 | * Given a route entry and a VRF, see if this route entry should be | |
2954 | * imported into the VRF i.e., RTs match. | |
2955 | */ | |
4b7e6066 | 2956 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2957 | struct bgp_path_info *pi) |
5ba238b7 | 2958 | { |
40381db7 | 2959 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2960 | struct ecommunity *ecom; |
2961 | int i; | |
2962 | ||
2963 | assert(attr); | |
2964 | /* Route should have valid RT to be even considered. */ | |
2965 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2966 | return 0; | |
2967 | ||
2968 | ecom = attr->ecommunity; | |
2969 | if (!ecom || !ecom->size) | |
2970 | return 0; | |
2971 | ||
2972 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2973 | * matches, we're done. | |
2974 | */ | |
2975 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2976 | uint8_t *pnt; |
2977 | uint8_t type, sub_type; | |
5ba238b7 MK |
2978 | struct ecommunity_val *eval; |
2979 | struct ecommunity_val eval_tmp; | |
2980 | struct vrf_irt_node *irt; | |
2981 | ||
2982 | /* Only deal with RTs */ | |
2983 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2984 | eval = (struct ecommunity_val *)(ecom->val | |
2985 | + (i * ECOMMUNITY_SIZE)); | |
2986 | type = *pnt++; | |
2987 | sub_type = *pnt++; | |
2988 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2989 | continue; | |
2990 | ||
2991 | /* See if this RT matches specified VNIs import RTs */ | |
2992 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2993 | if (irt) |
5ba238b7 MK |
2994 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2995 | return 1; | |
2996 | ||
2997 | /* Also check for non-exact match. In this, we mask out the AS | |
2998 | * and | |
2999 | * only check on the local-admin sub-field. This is to | |
3000 | * facilitate using | |
3001 | * VNI as the RT for EBGP peering too. | |
3002 | */ | |
3003 | irt = NULL; | |
3004 | if (type == ECOMMUNITY_ENCODE_AS | |
3005 | || type == ECOMMUNITY_ENCODE_AS4 | |
3006 | || type == ECOMMUNITY_ENCODE_IP) { | |
3007 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3008 | mask_ecom_global_admin(&eval_tmp, eval); | |
3009 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3010 | } | |
5d9cbca2 | 3011 | if (irt) |
5ba238b7 MK |
3012 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3013 | return 1; | |
3014 | } | |
3015 | ||
3016 | return 0; | |
3017 | } | |
3018 | ||
128ea8ab | 3019 | /* |
3020 | * Given a route entry and a VNI, see if this route entry should be | |
3021 | * imported into the VNI i.e., RTs match. | |
3022 | */ | |
d62a17ae | 3023 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3024 | struct bgp_path_info *pi) |
d62a17ae | 3025 | { |
40381db7 | 3026 | struct attr *attr = pi->attr; |
d62a17ae | 3027 | struct ecommunity *ecom; |
3028 | int i; | |
3029 | ||
3030 | assert(attr); | |
3031 | /* Route should have valid RT to be even considered. */ | |
3032 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3033 | return 0; | |
3034 | ||
3035 | ecom = attr->ecommunity; | |
3036 | if (!ecom || !ecom->size) | |
3037 | return 0; | |
3038 | ||
3039 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3040 | * matches, we're done. | |
3041 | */ | |
3042 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3043 | uint8_t *pnt; |
3044 | uint8_t type, sub_type; | |
d62a17ae | 3045 | struct ecommunity_val *eval; |
3046 | struct ecommunity_val eval_tmp; | |
3047 | struct irt_node *irt; | |
3048 | ||
3049 | /* Only deal with RTs */ | |
3050 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3051 | eval = (struct ecommunity_val *)(ecom->val | |
3052 | + (i * ECOMMUNITY_SIZE)); | |
3053 | type = *pnt++; | |
3054 | sub_type = *pnt++; | |
3055 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3056 | continue; | |
3057 | ||
3058 | /* See if this RT matches specified VNIs import RTs */ | |
3059 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3060 | if (irt) |
d62a17ae | 3061 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3062 | return 1; | |
3063 | ||
3064 | /* Also check for non-exact match. In this, we mask out the AS | |
3065 | * and | |
3066 | * only check on the local-admin sub-field. This is to | |
3067 | * facilitate using | |
3068 | * VNI as the RT for EBGP peering too. | |
3069 | */ | |
3070 | irt = NULL; | |
3071 | if (type == ECOMMUNITY_ENCODE_AS | |
3072 | || type == ECOMMUNITY_ENCODE_AS4 | |
3073 | || type == ECOMMUNITY_ENCODE_IP) { | |
3074 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3075 | mask_ecom_global_admin(&eval_tmp, eval); | |
3076 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3077 | } | |
b1ab0dfe | 3078 | if (irt) |
d62a17ae | 3079 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3080 | return 1; | |
3081 | } | |
3082 | ||
3083 | return 0; | |
128ea8ab | 3084 | } |
3085 | ||
50f74cf1 | 3086 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
3087 | struct evpnes *es, | |
3088 | int install) | |
3089 | { | |
3090 | int ret; | |
3091 | afi_t afi; | |
3092 | safi_t safi; | |
3093 | char buf[PREFIX_STRLEN]; | |
3094 | char buf1[ESI_STR_LEN]; | |
3095 | struct bgp_node *rd_rn, *rn; | |
3096 | struct bgp_table *table; | |
40381db7 | 3097 | struct bgp_path_info *pi; |
50f74cf1 | 3098 | |
3099 | afi = AFI_L2VPN; | |
3100 | safi = SAFI_EVPN; | |
3101 | ||
2bb9eff4 DS |
3102 | /* |
3103 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 3104 | * imported into this VRF. Note that we need to loop through all global |
3105 | * routes to determine which route matches the import rt on vrf | |
3106 | */ | |
3107 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3108 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3109 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 3110 | if (!table) |
3111 | continue; | |
3112 | ||
3113 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
b54892e0 DS |
3114 | const struct prefix_evpn *evp = |
3115 | (const struct prefix_evpn *)bgp_node_get_prefix( | |
3116 | rn); | |
50f74cf1 | 3117 | |
6f94b685 DS |
3118 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3119 | pi = pi->next) { | |
2bb9eff4 DS |
3120 | /* |
3121 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 3122 | * this ES. |
3123 | */ | |
40381db7 DS |
3124 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3125 | && pi->type == ZEBRA_ROUTE_BGP | |
3126 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 3127 | continue; |
3128 | ||
2bb9eff4 DS |
3129 | if (!is_prefix_matching_for_es(evp, es)) |
3130 | continue; | |
50f74cf1 | 3131 | |
2bb9eff4 DS |
3132 | if (install) |
3133 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 3134 | bgp, es, evp, pi); |
2bb9eff4 DS |
3135 | else |
3136 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 3137 | bgp, es, evp, pi); |
2bb9eff4 DS |
3138 | |
3139 | if (ret) { | |
af4c2728 | 3140 | flog_err( |
e50f7cfd | 3141 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
3142 | "Failed to %s EVPN %s route in ESI %s", |
3143 | install ? "install" | |
3144 | : "uninstall", | |
3145 | prefix2str(evp, buf, | |
3146 | sizeof(buf)), | |
3147 | esi_to_str(&es->esi, buf1, | |
3148 | sizeof(buf1))); | |
3149 | return ret; | |
50f74cf1 | 3150 | } |
3151 | } | |
3152 | } | |
3153 | } | |
3154 | return 0; | |
3155 | } | |
3156 | ||
47bf0432 CS |
3157 | /* This API will scan evpn routes for checking attribute's rmac |
3158 | * macthes with bgp instance router mac. It avoid installing | |
3159 | * route into bgp vrf table and remote rmac in bridge table. | |
3160 | */ | |
3161 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3162 | const struct prefix_evpn *evp, |
47bf0432 CS |
3163 | struct bgp_path_info *pi) |
3164 | { | |
3165 | /* evpn route could have learnt prior to L3vni has come up, | |
3166 | * perform rmac check before installing route and | |
3167 | * remote router mac. | |
3168 | * The route will be removed from global bgp table once | |
3169 | * SVI comes up with MAC and stored in hash, triggers | |
3170 | * bgp_mac_rescan_all_evpn_tables. | |
3171 | */ | |
05864da7 | 3172 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
3173 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
3174 | char buf1[PREFIX_STRLEN]; | |
3175 | char attr_str[BUFSIZ] = {0}; | |
3176 | ||
3177 | bgp_dump_attr(pi->attr, attr_str, BUFSIZ); | |
3178 | ||
3179 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
3180 | __func__, bgp_vrf->vrf_id, | |
3181 | prefix2str(evp, buf1, sizeof(buf1)), | |
3182 | attr_str); | |
3183 | } | |
3184 | ||
3185 | return 1; | |
3186 | } | |
3187 | ||
3188 | return 0; | |
3189 | } | |
3190 | ||
5ba238b7 MK |
3191 | /* |
3192 | * Install or uninstall mac-ip routes are appropriate for this | |
3193 | * particular VRF. | |
3194 | */ | |
996c9314 | 3195 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3196 | { |
3197 | afi_t afi; | |
3198 | safi_t safi; | |
3199 | struct bgp_node *rd_rn, *rn; | |
3200 | struct bgp_table *table; | |
40381db7 | 3201 | struct bgp_path_info *pi; |
5ba238b7 MK |
3202 | int ret; |
3203 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 3204 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3205 | |
3206 | afi = AFI_L2VPN; | |
3207 | safi = SAFI_EVPN; | |
5e53dce3 T |
3208 | bgp_evpn = bgp_get_evpn(); |
3209 | if (!bgp_evpn) | |
5ba238b7 MK |
3210 | return -1; |
3211 | ||
3212 | /* Walk entire global routing table and evaluate routes which could be | |
3213 | * imported into this VRF. Note that we need to loop through all global | |
3214 | * routes to determine which route matches the import rt on vrf | |
3215 | */ | |
5e53dce3 | 3216 | for (rd_rn = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_rn; |
5ba238b7 | 3217 | rd_rn = bgp_route_next(rd_rn)) { |
67009e22 | 3218 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
3219 | if (!table) |
3220 | continue; | |
3221 | ||
3222 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
b54892e0 | 3223 | const struct prefix_evpn *evp = (const struct prefix_evpn *)bgp_node_get_prefix(rn); |
5ba238b7 | 3224 | |
1eb88002 | 3225 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3226 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3227 | || evp->prefix.route_type | |
3228 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3229 | continue; |
3230 | ||
1eb88002 | 3231 | /* if not a mac+ip route skip this route */ |
3714a385 | 3232 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3233 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3234 | continue; |
3235 | ||
6f94b685 DS |
3236 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3237 | pi = pi->next) { | |
5ba238b7 | 3238 | /* Consider "valid" remote routes applicable for |
523cafc4 | 3239 | * this VRF. |
3240 | */ | |
40381db7 DS |
3241 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3242 | && pi->type == ZEBRA_ROUTE_BGP | |
3243 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3244 | continue; |
3245 | ||
40381db7 | 3246 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
3247 | if (bgp_evpn_route_rmac_self_check( |
3248 | bgp_vrf, evp, pi)) | |
3249 | continue; | |
3250 | ||
5ba238b7 | 3251 | if (install) |
996c9314 | 3252 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3253 | bgp_vrf, evp, pi); |
5ba238b7 | 3254 | else |
996c9314 | 3255 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3256 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3257 | |
3258 | if (ret) { | |
af4c2728 | 3259 | flog_err( |
e50f7cfd | 3260 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3261 | "Failed to %s EVPN %s route in VRF %s", |
3262 | install ? "install" | |
3263 | : "uninstall", | |
3264 | prefix2str(evp, buf, | |
3265 | sizeof(buf)), | |
996c9314 LB |
3266 | vrf_id_to_name( |
3267 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3268 | return ret; |
3269 | } | |
3270 | } | |
3271 | } | |
3272 | } | |
3273 | } | |
3274 | ||
3275 | return 0; | |
3276 | } | |
3277 | ||
128ea8ab | 3278 | /* |
3279 | * Install or uninstall routes of specified type that are appropriate for this | |
3280 | * particular VNI. | |
3281 | */ | |
d62a17ae | 3282 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3283 | struct bgpevpn *vpn, | |
3284 | bgp_evpn_route_type rtype, | |
3285 | int install) | |
3286 | { | |
0291c246 MK |
3287 | afi_t afi; |
3288 | safi_t safi; | |
3289 | struct bgp_node *rd_rn, *rn; | |
3290 | struct bgp_table *table; | |
40381db7 | 3291 | struct bgp_path_info *pi; |
0291c246 | 3292 | int ret; |
d62a17ae | 3293 | |
3294 | afi = AFI_L2VPN; | |
3295 | safi = SAFI_EVPN; | |
3296 | ||
3297 | /* Walk entire global routing table and evaluate routes which could be | |
3298 | * imported into this VPN. Note that we cannot just look at the routes | |
3299 | * for | |
3300 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3301 | * RD. | |
3302 | */ | |
3303 | /* EVPN routes are a 2-level table. */ | |
3304 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3305 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3306 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3307 | if (!table) |
3308 | continue; | |
3309 | ||
3310 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
b54892e0 DS |
3311 | const struct prefix_evpn *evp = |
3312 | (const struct prefix_evpn *)bgp_node_get_prefix( | |
3313 | rn); | |
d62a17ae | 3314 | |
3315 | if (evp->prefix.route_type != rtype) | |
3316 | continue; | |
3317 | ||
6f94b685 DS |
3318 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3319 | pi = pi->next) { | |
d62a17ae | 3320 | /* Consider "valid" remote routes applicable for |
3321 | * this VNI. */ | |
40381db7 DS |
3322 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3323 | && pi->type == ZEBRA_ROUTE_BGP | |
3324 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3325 | continue; |
3326 | ||
40381db7 | 3327 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3328 | if (install) |
3329 | ret = install_evpn_route_entry( | |
40381db7 | 3330 | bgp, vpn, evp, pi); |
d62a17ae | 3331 | else |
3332 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3333 | bgp, vpn, evp, pi); |
d62a17ae | 3334 | |
3335 | if (ret) { | |
af4c2728 | 3336 | flog_err( |
e50f7cfd | 3337 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3338 | "%u: Failed to %s EVPN %s route in VNI %u", |
3339 | bgp->vrf_id, | |
3340 | install ? "install" | |
3341 | : "uninstall", | |
3342 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3343 | ? "MACIP" | |
3344 | : "IMET", | |
3345 | vpn->vni); | |
3346 | return ret; | |
3347 | } | |
3348 | } | |
3349 | } | |
3350 | } | |
3351 | } | |
3352 | ||
3353 | return 0; | |
128ea8ab | 3354 | } |
3355 | ||
50f74cf1 | 3356 | /* Install any existing remote ES routes applicable for this ES into its routing |
3357 | * table. This is invoked when ES comes up. | |
3358 | */ | |
3359 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3360 | { | |
3361 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3362 | } | |
3363 | ||
3364 | ||
5ba238b7 | 3365 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3366 | * is invoked upon l3vni-add or l3vni import rt change |
3367 | */ | |
5ba238b7 MK |
3368 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3369 | { | |
3370 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3371 | return 0; | |
3372 | } | |
3373 | ||
128ea8ab | 3374 | /* |
3375 | * Install any existing remote routes applicable for this VNI into its | |
3376 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3377 | * RT is changed. | |
3378 | */ | |
d62a17ae | 3379 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3380 | { |
d62a17ae | 3381 | int ret; |
128ea8ab | 3382 | |
d62a17ae | 3383 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3384 | * for this VNI. | |
3385 | */ | |
3386 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3387 | 1); | |
3388 | if (ret) | |
3389 | return ret; | |
128ea8ab | 3390 | |
d62a17ae | 3391 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3392 | 1); | |
128ea8ab | 3393 | } |
3394 | ||
5ba238b7 MK |
3395 | /* uninstall routes from l3vni vrf. */ |
3396 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3397 | { | |
3398 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3399 | return 0; | |
3400 | } | |
3401 | ||
90e60aa7 | 3402 | /* |
3403 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3404 | * this is invoked is upon an import RT change. | |
3405 | */ | |
d62a17ae | 3406 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3407 | { |
d62a17ae | 3408 | int ret; |
90e60aa7 | 3409 | |
d62a17ae | 3410 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3411 | * applicable | |
3412 | * for this VNI. | |
3413 | */ | |
3414 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3415 | 0); | |
3416 | if (ret) | |
3417 | return ret; | |
90e60aa7 | 3418 | |
d62a17ae | 3419 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3420 | 0); | |
90e60aa7 | 3421 | } |
3422 | ||
50f74cf1 | 3423 | /* Install or unistall route in ES */ |
3424 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3425 | afi_t afi, safi_t safi, | |
3426 | struct prefix_evpn *evp, | |
40381db7 | 3427 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3428 | { |
3429 | int ret = 0; | |
3430 | char buf[ESI_STR_LEN]; | |
3431 | ||
3432 | if (install) | |
40381db7 | 3433 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3434 | else |
40381db7 | 3435 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3436 | |
3437 | if (ret) { | |
af4c2728 | 3438 | flog_err( |
e50f7cfd | 3439 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3440 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3441 | install ? "install" : "uninstall", "ES", | |
3442 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3443 | return ret; |
3444 | } | |
3445 | return 0; | |
3446 | } | |
3447 | ||
d3135ba3 | 3448 | /* |
3449 | * Install or uninstall route in matching VRFs (list). | |
3450 | */ | |
3451 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3452 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3453 | struct bgp_path_info *pi, |
d3135ba3 | 3454 | struct list *vrfs, int install) |
3455 | { | |
3456 | char buf[PREFIX2STR_BUFFER]; | |
3457 | struct bgp *bgp_vrf; | |
3458 | struct listnode *node, *nnode; | |
3459 | ||
90264d64 | 3460 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3461 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3462 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3463 | return 0; |
3464 | ||
90264d64 | 3465 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3466 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3467 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3468 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3469 | return 0; |
3470 | ||
d3135ba3 | 3471 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3472 | int ret; | |
3473 | ||
3474 | if (install) | |
40381db7 | 3475 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3476 | else |
996c9314 | 3477 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3478 | pi); |
d3135ba3 | 3479 | |
3480 | if (ret) { | |
e50f7cfd | 3481 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3482 | "%u: Failed to %s prefix %s in VRF %s", |
3483 | bgp_def->vrf_id, | |
3484 | install ? "install" : "uninstall", | |
3485 | prefix2str(evp, buf, sizeof(buf)), | |
3486 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3487 | return ret; |
3488 | } | |
3489 | } | |
3490 | ||
3491 | return 0; | |
3492 | } | |
3493 | ||
128ea8ab | 3494 | /* |
3495 | * Install or uninstall route in matching VNIs (list). | |
3496 | */ | |
d62a17ae | 3497 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3498 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3499 | struct bgp_path_info *pi, |
d62a17ae | 3500 | struct list *vnis, int install) |
128ea8ab | 3501 | { |
d62a17ae | 3502 | struct bgpevpn *vpn; |
3503 | struct listnode *node, *nnode; | |
128ea8ab | 3504 | |
d62a17ae | 3505 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3506 | int ret; | |
128ea8ab | 3507 | |
d62a17ae | 3508 | if (!is_vni_live(vpn)) |
3509 | continue; | |
128ea8ab | 3510 | |
d62a17ae | 3511 | if (install) |
40381db7 | 3512 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3513 | else |
40381db7 | 3514 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3515 | |
d62a17ae | 3516 | if (ret) { |
1c50c1c0 QY |
3517 | flog_err(EC_BGP_EVPN_FAIL, |
3518 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3519 | bgp->vrf_id, install ? "install" : "uninstall", | |
3520 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3521 | ? "MACIP" | |
3522 | : "IMET", | |
3523 | vpn->vni); | |
d62a17ae | 3524 | return ret; |
3525 | } | |
3526 | } | |
128ea8ab | 3527 | |
d62a17ae | 3528 | return 0; |
128ea8ab | 3529 | } |
3530 | ||
3531 | /* | |
50f74cf1 | 3532 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3533 | */ |
d62a17ae | 3534 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 3535 | const struct prefix *p, |
40381db7 | 3536 | struct bgp_path_info *pi, int import) |
d62a17ae | 3537 | { |
3538 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3539 | struct attr *attr = pi->attr; |
d62a17ae | 3540 | struct ecommunity *ecom; |
3541 | int i; | |
3542 | ||
3543 | assert(attr); | |
3544 | ||
50f74cf1 | 3545 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3546 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3547 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3548 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3549 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3550 | return 0; |
3551 | ||
3552 | /* If we don't have Route Target, nothing much to do. */ | |
3553 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3554 | return 0; | |
3555 | ||
3556 | ecom = attr->ecommunity; | |
3557 | if (!ecom || !ecom->size) | |
3558 | return -1; | |
3559 | ||
50f74cf1 | 3560 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3561 | * attached to the route */ | |
d62a17ae | 3562 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3563 | uint8_t *pnt; |
3564 | uint8_t type, sub_type; | |
d62a17ae | 3565 | struct ecommunity_val *eval; |
3566 | struct ecommunity_val eval_tmp; | |
996c9314 | 3567 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3568 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3569 | struct evpnes *es; |
d62a17ae | 3570 | |
3571 | /* Only deal with RTs */ | |
3572 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3573 | eval = (struct ecommunity_val *)(ecom->val | |
3574 | + (i * ECOMMUNITY_SIZE)); | |
3575 | type = *pnt++; | |
3576 | sub_type = *pnt++; | |
3577 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3578 | continue; | |
3579 | ||
50f74cf1 | 3580 | /* |
3581 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3582 | * IMET route is imported into VNI table. | |
3583 | * prefix routes are imported into VRF table. | |
523cafc4 | 3584 | */ |
50f74cf1 | 3585 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3586 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3587 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3588 | |
50f74cf1 | 3589 | irt = lookup_import_rt(bgp, eval); |
3590 | if (irt) | |
40381db7 DS |
3591 | install_uninstall_route_in_vnis( |
3592 | bgp, afi, safi, evp, pi, irt->vnis, | |
3593 | import); | |
50f74cf1 | 3594 | |
3595 | vrf_irt = lookup_vrf_import_rt(eval); | |
3596 | if (vrf_irt) | |
40381db7 DS |
3597 | install_uninstall_route_in_vrfs( |
3598 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3599 | import); | |
50f74cf1 | 3600 | |
3601 | /* Also check for non-exact match. | |
3602 | * In this, we mask out the AS and | |
3603 | * only check on the local-admin sub-field. | |
3604 | * This is to facilitate using | |
3605 | * VNI as the RT for EBGP peering too. | |
3606 | */ | |
3607 | irt = NULL; | |
3608 | vrf_irt = NULL; | |
3609 | if (type == ECOMMUNITY_ENCODE_AS | |
3610 | || type == ECOMMUNITY_ENCODE_AS4 | |
3611 | || type == ECOMMUNITY_ENCODE_IP) { | |
3612 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3613 | mask_ecom_global_admin(&eval_tmp, eval); | |
3614 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3615 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3616 | } | |
3617 | ||
3618 | if (irt) | |
40381db7 DS |
3619 | install_uninstall_route_in_vnis( |
3620 | bgp, afi, safi, evp, pi, irt->vnis, | |
3621 | import); | |
50f74cf1 | 3622 | if (vrf_irt) |
40381db7 DS |
3623 | install_uninstall_route_in_vrfs( |
3624 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3625 | import); | |
50f74cf1 | 3626 | } |
3627 | ||
3628 | /* es route is imported into the es table */ | |
3629 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3630 | ||
3631 | /* we will match based on the entire esi to avoid | |
3632 | * imoort of an es route for esi2 into esi1 | |
3633 | */ | |
3634 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3635 | if (es && is_es_local(es)) | |
40381db7 DS |
3636 | install_uninstall_route_in_es( |
3637 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3638 | } |
d62a17ae | 3639 | } |
3640 | ||
3641 | return 0; | |
128ea8ab | 3642 | } |
3643 | ||
2bb9eff4 DS |
3644 | /* |
3645 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3646 | * routes | |
3647 | */ | |
80b140af MK |
3648 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3649 | { | |
5fd9c12b KA |
3650 | /* Delete ipv4 default route and withdraw from peers */ |
3651 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3652 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3653 | SAFI_UNICAST, false); | |
3654 | ||
80b140af | 3655 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3656 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3657 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3658 | |
5fd9c12b KA |
3659 | /* Delete ipv6 default route and withdraw from peers */ |
3660 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3661 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3662 | SAFI_UNICAST, false); | |
3663 | ||
80b140af | 3664 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3665 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3666 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3667 | } |
3668 | ||
2bb9eff4 DS |
3669 | /* |
3670 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3671 | * routes | |
3672 | */ | |
5394a276 | 3673 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3674 | { |
5394a276 CS |
3675 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3676 | ||
3677 | bgp_evpn = bgp_get_evpn(); | |
3678 | if (!bgp_evpn) | |
3679 | return; | |
3680 | ||
80b140af | 3681 | /* update all ipv4 routes */ |
fdf19f06 MK |
3682 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3683 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3684 | |
5fd9c12b KA |
3685 | /* update ipv4 default route and withdraw from peers */ |
3686 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3687 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3688 | SAFI_UNICAST, true); | |
3689 | ||
80b140af | 3690 | /* update all ipv6 routes */ |
fdf19f06 MK |
3691 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3692 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3693 | |
3694 | /* update ipv6 default route and withdraw from peers */ | |
3695 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3696 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3697 | SAFI_UNICAST, true); | |
3698 | ||
80b140af MK |
3699 | } |
3700 | ||
676f83b9 | 3701 | /* |
3702 | * update and advertise local routes for a VRF as type-5 routes. | |
3703 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3704 | * done in the global route table using the routes which already exist in the | |
3705 | * VRF routing table | |
3706 | */ | |
80b140af | 3707 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3708 | { |
80b140af MK |
3709 | /* skip if the RD is configured */ |
3710 | if (is_vrf_rd_configured(bgp_vrf)) | |
3711 | return; | |
3712 | ||
3713 | /* derive the RD for the VRF based on new router-id */ | |
3714 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3715 | ||
3716 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3717 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3718 | } |
3719 | ||
3720 | /* | |
3721 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3722 | * This is invoked upon VRF RD change. The processing is done only from global | |
3723 | * table. | |
3724 | */ | |
80b140af | 3725 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3726 | { |
80b140af MK |
3727 | /* skip if the RD is configured */ |
3728 | if (is_vrf_rd_configured(bgp_vrf)) | |
3729 | return; | |
3730 | ||
3731 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3732 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3733 | } |
3734 | ||
90e60aa7 | 3735 | /* |
3736 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3737 | * change. Note that the processing is done only on the global route table | |
3738 | * using routes that already exist in the per-VNI table. | |
3739 | */ | |
d62a17ae | 3740 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3741 | { | |
3742 | struct prefix_evpn p; | |
3743 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3744 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3745 | struct attr *attr; |
3746 | afi_t afi = AFI_L2VPN; | |
3747 | safi_t safi = SAFI_EVPN; | |
3748 | ||
3749 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3750 | * attributes to create and advertise the type-3 route for this VNI | |
3751 | * in the global table. | |
fd069644 DS |
3752 | * |
3753 | * RT-3 only if doing head-end replication | |
d62a17ae | 3754 | */ |
833b8a50 AK |
3755 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3756 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
3757 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
3758 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3759 | if (!rn) /* unexpected */ | |
3760 | return 0; | |
6f94b685 | 3761 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3762 | if (pi->peer == bgp->peer_self && |
3763 | pi->type == ZEBRA_ROUTE_BGP | |
3764 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3765 | break; | |
3766 | if (!pi) /* unexpected */ | |
3767 | return 0; | |
3768 | attr = pi->attr; | |
d62a17ae | 3769 | |
fd069644 DS |
3770 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3771 | (struct prefix *)&p, &vpn->prd); | |
3772 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3773 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3774 | |
fd069644 DS |
3775 | /* Schedule for processing and unlock node. */ |
3776 | bgp_process(bgp, global_rn, afi, safi); | |
3777 | bgp_unlock_node(global_rn); | |
3778 | } | |
d62a17ae | 3779 | |
3780 | /* Now, walk this VNI's route table and use the route and its attribute | |
3781 | * to create and schedule route in global table. | |
3782 | */ | |
3783 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3784 | rn = bgp_route_next(rn)) { | |
b54892e0 DS |
3785 | const struct prefix_evpn *evp = |
3786 | (const struct prefix_evpn *)bgp_node_get_prefix(rn); | |
d62a17ae | 3787 | |
3788 | /* Identify MAC-IP local routes. */ | |
3789 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3790 | continue; | |
3791 | ||
6f94b685 | 3792 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3793 | if (pi->peer == bgp->peer_self |
3794 | && pi->type == ZEBRA_ROUTE_BGP | |
3795 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3796 | break; |
40381db7 | 3797 | if (!pi) |
d62a17ae | 3798 | continue; |
3799 | ||
3800 | /* Create route in global routing table using this route entry's | |
3801 | * attribute. | |
3802 | */ | |
40381db7 | 3803 | attr = pi->attr; |
d62a17ae | 3804 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3805 | (struct prefix *)evp, &vpn->prd); | |
3806 | assert(global_rn); | |
3807 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3808 | &global_pi, 0, |
f07e1c99 | 3809 | mac_mobility_seqnum(attr)); |
d62a17ae | 3810 | |
3811 | /* Schedule for processing and unlock node. */ | |
3812 | bgp_process(bgp, global_rn, afi, safi); | |
3813 | bgp_unlock_node(global_rn); | |
3814 | } | |
3815 | ||
3816 | return 0; | |
90e60aa7 | 3817 | } |
3818 | ||
3819 | /* | |
3820 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3821 | * table. Invoked upon router-id change. | |
3822 | */ | |
d62a17ae | 3823 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3824 | { |
d62a17ae | 3825 | int ret; |
3826 | struct prefix_evpn p; | |
3827 | struct bgp_node *global_rn; | |
40381db7 | 3828 | struct bgp_path_info *pi; |
d62a17ae | 3829 | afi_t afi = AFI_L2VPN; |
3830 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3831 | |
d62a17ae | 3832 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3833 | * for this VNI - from the global table. | |
3834 | */ | |
3835 | ret = delete_global_type2_routes(bgp, vpn); | |
3836 | if (ret) | |
3837 | return ret; | |
90e60aa7 | 3838 | |
d62a17ae | 3839 | /* Remove type-3 route for this VNI from global table. */ |
3840 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3841 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3842 | (struct prefix *)&p, &vpn->prd); | |
3843 | if (global_rn) { | |
3844 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3845 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3846 | |
d62a17ae | 3847 | /* Schedule for processing - withdraws to peers happen from |
3848 | * this table. | |
3849 | */ | |
40381db7 | 3850 | if (pi) |
d62a17ae | 3851 | bgp_process(bgp, global_rn, afi, safi); |
3852 | bgp_unlock_node(global_rn); | |
3853 | } | |
90e60aa7 | 3854 | |
d62a17ae | 3855 | return 0; |
90e60aa7 | 3856 | } |
3857 | ||
2d48ee25 | 3858 | /* |
3859 | * Handle router-id change. Update and advertise local routes corresponding | |
3860 | * to this VNI from peers. Note that this is invoked after updating the | |
3861 | * router-id. The routes in the per-VNI table are used to create routes in | |
3862 | * the global table and schedule them. | |
3863 | */ | |
e3b78da8 | 3864 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3865 | { |
e3b78da8 | 3866 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3867 | |
d62a17ae | 3868 | /* Skip VNIs with configured RD. */ |
3869 | if (is_rd_configured(vpn)) | |
3870 | return; | |
2d48ee25 | 3871 | |
d62a17ae | 3872 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3873 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3874 | } |
3875 | ||
3876 | /* | |
3877 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3878 | * to this VNI from peers. Note that this is invoked prior to updating | |
3879 | * the router-id and is done only on the global route table, the routes | |
3880 | * are needed in the per-VNI table to re-advertise with new router id. | |
3881 | */ | |
e3b78da8 | 3882 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3883 | { |
e3b78da8 | 3884 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3885 | |
d62a17ae | 3886 | /* Skip VNIs with configured RD. */ |
3887 | if (is_rd_configured(vpn)) | |
3888 | return; | |
2d48ee25 | 3889 | |
d62a17ae | 3890 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3891 | } |
3892 | ||
fd069644 DS |
3893 | /* |
3894 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3895 | * This is invoked upon flooding mode changing to head-end replication. | |
3896 | */ | |
e3b78da8 | 3897 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3898 | { |
e3b78da8 | 3899 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3900 | struct bgp *bgp = data; |
3901 | struct prefix_evpn p; | |
3902 | ||
833b8a50 AK |
3903 | if (!vpn || !is_vni_live(vpn) || |
3904 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3905 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3906 | return; |
3907 | ||
3908 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3909 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3910 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3911 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3912 | } | |
3913 | ||
3914 | /* | |
3915 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3916 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3917 | */ | |
e3b78da8 | 3918 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3919 | { |
e3b78da8 | 3920 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3921 | struct bgp *bgp = data; |
3922 | struct prefix_evpn p; | |
3923 | ||
3924 | if (!vpn || !is_vni_live(vpn)) | |
3925 | return; | |
3926 | ||
3927 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3928 | delete_evpn_route(bgp, vpn, &p); | |
3929 | } | |
3930 | ||
128ea8ab | 3931 | /* |
3932 | * Process received EVPN type-2 route (advertise or withdraw). | |
3933 | */ | |
d62a17ae | 3934 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3935 | struct attr *attr, uint8_t *pfx, int psize, |
3936 | uint32_t addpath_id) | |
d62a17ae | 3937 | { |
3938 | struct prefix_rd prd; | |
3939 | struct prefix_evpn p; | |
554cd77a | 3940 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3941 | uint8_t ipaddr_len; |
3942 | uint8_t macaddr_len; | |
b57ba6d2 | 3943 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3944 | uint32_t num_labels = 0; |
554cd77a | 3945 | uint32_t eth_tag; |
d62a17ae | 3946 | int ret; |
3947 | ||
3948 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3949 | * additional 3 bytes if there is a second label (VNI): | |
3950 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3951 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3952 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3953 | */ | |
3954 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3955 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3956 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3957 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3958 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3959 | return -1; |
3960 | } | |
3961 | ||
554cd77a VB |
3962 | memset(&evpn, 0, sizeof(evpn)); |
3963 | ||
d62a17ae | 3964 | /* Make prefix_rd */ |
3965 | prd.family = AF_UNSPEC; | |
3966 | prd.prefixlen = 64; | |
3967 | memcpy(&prd.val, pfx, 8); | |
3968 | pfx += 8; | |
3969 | ||
3970 | /* Make EVPN prefix. */ | |
3971 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3972 | p.family = AF_EVPN; |
50f74cf1 | 3973 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3974 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3975 | ||
554cd77a VB |
3976 | /* Copy Ethernet Seg Identifier */ |
3977 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3978 | pfx += ESI_LEN; | |
d62a17ae | 3979 | |
554cd77a VB |
3980 | /* Copy Ethernet Tag */ |
3981 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3982 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3983 | pfx += 4; |
3984 | ||
3985 | /* Get the MAC Addr len */ | |
3986 | macaddr_len = *pfx++; | |
3987 | ||
3988 | /* Get the MAC Addr */ | |
28328ea9 | 3989 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3990 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3991 | pfx += ETH_ALEN; |
d62a17ae | 3992 | } else { |
af4c2728 | 3993 | flog_err( |
e50f7cfd | 3994 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3995 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3996 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3997 | return -1; | |
3998 | } | |
3999 | ||
4000 | ||
4001 | /* Get the IP. */ | |
4002 | ipaddr_len = *pfx++; | |
4003 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
4004 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 4005 | flog_err( |
e50f7cfd | 4006 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4007 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
4008 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4009 | return -1; | |
4010 | } | |
4011 | ||
4012 | if (ipaddr_len) { | |
4013 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4014 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4015 | ? IPADDR_V4 |
4016 | : IPADDR_V6; | |
3714a385 | 4017 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 4018 | } |
4019 | pfx += ipaddr_len; | |
4020 | ||
b57ba6d2 MK |
4021 | /* Get the VNI(s). Stored as bytes here. */ |
4022 | num_labels++; | |
4023 | memset(label, 0, sizeof(label)); | |
4024 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 4025 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
4026 | psize -= (33 + ipaddr_len); |
4027 | /* Do we have a second VNI? */ | |
4028 | if (psize) { | |
4029 | num_labels++; | |
4030 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4031 | /* |
4032 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4033 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
4034 | * the next field | |
6b11bd8d | 4035 | */ |
b57ba6d2 | 4036 | } |
d62a17ae | 4037 | |
4038 | /* Process the route. */ | |
4039 | if (attr) | |
4040 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4041 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4042 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 4043 | else |
4044 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4045 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4046 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 4047 | return ret; |
128ea8ab | 4048 | } |
4049 | ||
4050 | /* | |
4051 | * Process received EVPN type-3 route (advertise or withdraw). | |
4052 | */ | |
d62a17ae | 4053 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4054 | struct attr *attr, uint8_t *pfx, int psize, |
4055 | uint32_t addpath_id) | |
d62a17ae | 4056 | { |
4057 | struct prefix_rd prd; | |
4058 | struct prefix_evpn p; | |
d7c0a89a | 4059 | uint8_t ipaddr_len; |
554cd77a | 4060 | uint32_t eth_tag; |
d62a17ae | 4061 | int ret; |
4062 | ||
4063 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4064 | * IP len (1) and IP (4 or 16). | |
4065 | */ | |
4066 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4067 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4068 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4069 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4070 | return -1; |
4071 | } | |
4072 | ||
7fd077aa | 4073 | /* If PMSI is present, log if it is anything other than IR. |
4074 | * Note: We just simply ignore the values as it is not clear if | |
4075 | * doing anything else is better. | |
4076 | */ | |
4077 | if (attr && | |
4078 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
4079 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
4080 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4081 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
4082 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4083 | peer->bgp->vrf_id, peer->host, | |
4084 | attr->pmsi_tnl_type); | |
7fd077aa | 4085 | } |
4086 | } | |
4087 | ||
d62a17ae | 4088 | /* Make prefix_rd */ |
4089 | prd.family = AF_UNSPEC; | |
4090 | prd.prefixlen = 64; | |
4091 | memcpy(&prd.val, pfx, 8); | |
4092 | pfx += 8; | |
4093 | ||
4094 | /* Make EVPN prefix. */ | |
4095 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4096 | p.family = AF_EVPN; |
50f74cf1 | 4097 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4098 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4099 | ||
554cd77a VB |
4100 | /* Copy Ethernet Tag */ |
4101 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4102 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4103 | pfx += 4; |
4104 | ||
4105 | /* Get the IP. */ | |
4106 | ipaddr_len = *pfx++; | |
4107 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4108 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4109 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4110 | } else { |
af4c2728 | 4111 | flog_err( |
e50f7cfd | 4112 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4113 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4114 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4115 | return -1; | |
4116 | } | |
4117 | ||
4118 | /* Process the route. */ | |
4119 | if (attr) | |
4120 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4121 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4122 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4123 | else |
4124 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4125 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4126 | &prd, NULL, 0, NULL); |
d62a17ae | 4127 | return ret; |
128ea8ab | 4128 | } |
4129 | ||
50f74cf1 | 4130 | /* |
4131 | * Process received EVPN type-4 route (advertise or withdraw). | |
4132 | */ | |
4133 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
4134 | struct attr *attr, uint8_t *pfx, int psize, | |
4135 | uint32_t addpath_id) | |
4136 | { | |
4137 | int ret; | |
4138 | esi_t esi; | |
4139 | uint8_t ipaddr_len; | |
4140 | struct in_addr vtep_ip; | |
4141 | struct prefix_rd prd; | |
4142 | struct prefix_evpn p; | |
4143 | ||
4144 | /* Type-4 route should be either 23 or 35 bytes | |
4145 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
4146 | */ | |
4147 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 4148 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4149 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
4150 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 4151 | return -1; |
4152 | } | |
4153 | ||
4154 | /* Make prefix_rd */ | |
4155 | prd.family = AF_UNSPEC; | |
4156 | prd.prefixlen = 64; | |
4157 | memcpy(&prd.val, pfx, 8); | |
4158 | pfx += 8; | |
4159 | ||
4160 | /* get the ESI */ | |
4161 | memcpy(&esi, pfx, ESI_BYTES); | |
4162 | pfx += ESI_BYTES; | |
4163 | ||
4164 | ||
4165 | /* Get the IP. */ | |
4166 | ipaddr_len = *pfx++; | |
4167 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
4168 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
4169 | } else { | |
af4c2728 | 4170 | flog_err( |
e50f7cfd | 4171 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 4172 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
4173 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4174 | return -1; | |
4175 | } | |
4176 | ||
4177 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
4178 | /* Process the route. */ | |
4179 | if (attr) { | |
4180 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4181 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4182 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 4183 | } else { |
50f74cf1 | 4184 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4185 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4186 | &prd, NULL, 0, NULL); | |
4187 | } | |
4188 | return ret; | |
4189 | } | |
4190 | ||
4191 | ||
128ea8ab | 4192 | /* |
4193 | * Process received EVPN type-5 route (advertise or withdraw). | |
4194 | */ | |
d62a17ae | 4195 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4196 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4197 | uint32_t addpath_id) |
d62a17ae | 4198 | { |
4199 | struct prefix_rd prd; | |
4200 | struct prefix_evpn p; | |
4201 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4202 | uint8_t ippfx_len; |
4203 | uint32_t eth_tag; | |
b57ba6d2 | 4204 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4205 | int ret; |
c6ec0c74 KA |
4206 | afi_t gw_afi; |
4207 | bool is_valid_update = false; | |
d62a17ae | 4208 | |
4209 | /* Type-5 route should be 34 or 58 bytes: | |
4210 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4211 | * GW (4 or 16) and VNI (3). | |
4212 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4213 | */ | |
4214 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4215 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4216 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4217 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4218 | return -1; |
4219 | } | |
4220 | ||
4221 | /* Make prefix_rd */ | |
4222 | prd.family = AF_UNSPEC; | |
4223 | prd.prefixlen = 64; | |
4224 | memcpy(&prd.val, pfx, 8); | |
4225 | pfx += 8; | |
4226 | ||
4227 | /* Make EVPN prefix. */ | |
4228 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4229 | p.family = AF_EVPN; |
50f74cf1 | 4230 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4231 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4232 | ||
4233 | /* Additional information outside of prefix - ESI and GW IP */ | |
4234 | memset(&evpn, 0, sizeof(evpn)); | |
4235 | ||
4236 | /* Fetch ESI */ | |
4237 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
4238 | pfx += 10; | |
4239 | ||
4240 | /* Fetch Ethernet Tag. */ | |
4241 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4242 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4243 | pfx += 4; |
4244 | ||
4245 | /* Fetch IP prefix length. */ | |
4246 | ippfx_len = *pfx++; | |
4247 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4248 | flog_err( |
e50f7cfd | 4249 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4250 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4251 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4252 | return -1; | |
4253 | } | |
3714a385 | 4254 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4255 | |
4256 | /* Determine IPv4 or IPv6 prefix */ | |
4257 | /* Since the address and GW are from the same family, this just becomes | |
4258 | * a simple check on the total size. | |
4259 | */ | |
4260 | if (psize == 34) { | |
3714a385 | 4261 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4262 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4263 | pfx += 4; |
4264 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4265 | pfx += 4; | |
c6ec0c74 | 4266 | gw_afi = AF_INET; |
d62a17ae | 4267 | } else { |
3714a385 | 4268 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4269 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4270 | pfx += 16; |
4271 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4272 | pfx += 16; | |
c6ec0c74 | 4273 | gw_afi = AF_INET6; |
d62a17ae | 4274 | } |
4275 | ||
b57ba6d2 MK |
4276 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4277 | memset(&label, 0, sizeof(label)); | |
4278 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4279 | |
4280 | /* | |
4281 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4282 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4283 | * field | |
6b11bd8d | 4284 | */ |
d62a17ae | 4285 | |
c6ec0c74 KA |
4286 | if (attr) { |
4287 | is_valid_update = true; | |
4288 | if (is_zero_mac(&attr->rmac) && is_zero_esi(&evpn.eth_s_id) && | |
4289 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) | |
4290 | is_valid_update = false; | |
4291 | ||
4292 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4293 | is_valid_update = false; | |
4294 | } | |
4295 | ||
d62a17ae | 4296 | /* Process the route. */ |
c6ec0c74 | 4297 | if (is_valid_update) |
d62a17ae | 4298 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4299 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4300 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4301 | else |
4302 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4303 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4304 | &prd, &label, 1, &evpn); |
d62a17ae | 4305 | |
4306 | return ret; | |
4307 | } | |
4308 | ||
5f040085 DS |
4309 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4310 | const struct prefix_rd *prd, | |
4311 | mpls_label_t *label, uint32_t num_labels, | |
4312 | struct attr *attr) | |
d62a17ae | 4313 | { |
4314 | int len; | |
4315 | char temp[16]; | |
5f040085 | 4316 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4317 | |
4318 | memset(&temp, 0, 16); | |
b03b8898 | 4319 | if (p->family != AF_EVPN) |
d62a17ae | 4320 | return; |
4321 | p_evpn_p = &(p->u.prefix_evpn); | |
4322 | ||
e9fc2840 | 4323 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4324 | IP and GW-IP have to be both ipv4 or ipv6 |
4325 | */ | |
3714a385 | 4326 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4327 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4328 | else |
e9fc2840 | 4329 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4330 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4331 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4332 | stream_put(s, prd->val, 8); | |
0af35d90 | 4333 | if (attr) |
d62a17ae | 4334 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4335 | else | |
4336 | stream_put(s, &temp, 10); | |
3714a385 | 4337 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4338 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4339 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4340 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4341 | else |
3714a385 | 4342 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4343 | if (attr) { |
3714a385 | 4344 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4345 | stream_put_ipv4(s, |
4346 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4347 | else | |
4348 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4349 | } else { | |
3714a385 | 4350 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4351 | stream_put_ipv4(s, 0); |
4352 | else | |
4353 | stream_put(s, &temp, 16); | |
4354 | } | |
4355 | ||
b57ba6d2 | 4356 | if (num_labels) |
d62a17ae | 4357 | stream_put(s, label, 3); |
4358 | else | |
4359 | stream_put3(s, 0); | |
128ea8ab | 4360 | } |
4361 | ||
4362 | /* | |
4363 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4364 | */ | |
e3b78da8 | 4365 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4366 | { |
e3b78da8 | 4367 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4368 | |
d62a17ae | 4369 | /* Remove EVPN routes and schedule for processing. */ |
4370 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4371 | |
d62a17ae | 4372 | /* Clear "live" flag and see if hash needs to be freed. */ |
4373 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4374 | if (!is_vni_configured(vpn)) | |
4375 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4376 | } |
4377 | ||
4378 | /* | |
4379 | * Free a VNI entry; iterator function called during cleanup. | |
4380 | */ | |
e3b78da8 | 4381 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4382 | { |
e3b78da8 | 4383 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4384 | |
d62a17ae | 4385 | delete_all_vni_routes(bgp, vpn); |
4386 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4387 | } |
4388 | ||
c581d8b0 MK |
4389 | /* |
4390 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4391 | */ | |
4392 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4393 | { | |
5e53dce3 | 4394 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4395 | |
c581d8b0 | 4396 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4397 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4398 | ||
4399 | /* Map RT to VRF */ | |
5e53dce3 T |
4400 | bgp_evpn = bgp_get_evpn(); |
4401 | if (!bgp_evpn) | |
10ebe1ab MK |
4402 | return; |
4403 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4404 | } |
4405 | ||
4406 | /* | |
4407 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4408 | */ | |
4409 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4410 | { | |
4411 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4412 | } | |
4413 | ||
4414 | /* | |
4415 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4416 | */ | |
4417 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4418 | { | |
4419 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4420 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4421 | } | |
4422 | ||
4423 | /* | |
4424 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4425 | */ | |
4426 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4427 | { | |
4428 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4429 | } | |
128ea8ab | 4430 | |
f1f8b53c MK |
4431 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4432 | { | |
5e53dce3 | 4433 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4434 | struct listnode *node = NULL; |
4435 | struct bgpevpn *vpn = NULL; | |
4436 | ||
5e53dce3 T |
4437 | bgp_evpn = bgp_get_evpn(); |
4438 | if (!bgp_evpn) | |
f1f8b53c MK |
4439 | return; |
4440 | ||
4992b4ae MK |
4441 | /* update all type-5 routes */ |
4442 | update_advertise_vrf_routes(bgp_vrf); | |
4443 | ||
4444 | /* update all type-2 routes */ | |
f1f8b53c | 4445 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4446 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4447 | } |
4448 | ||
bf1061d8 VB |
4449 | /* |
4450 | * Handle autort change for a given VNI. | |
4451 | */ | |
e3b78da8 | 4452 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4453 | { |
e3b78da8 | 4454 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4455 | |
bf1061d8 VB |
4456 | if (!is_import_rt_configured(vpn)) { |
4457 | if (is_vni_live(vpn)) | |
4458 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4459 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4460 | list_delete_all_node(vpn->import_rtl); |
4461 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4462 | if (is_vni_live(vpn)) | |
4463 | bgp_evpn_install_routes(bgp, vpn); | |
4464 | } | |
4465 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4466 | list_delete_all_node(vpn->export_rtl); |
4467 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4468 | if (is_vni_live(vpn)) | |
4469 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4470 | } | |
4471 | } | |
4472 | ||
128ea8ab | 4473 | /* |
4474 | * Public functions. | |
4475 | */ | |
4476 | ||
5424b7ba | 4477 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4478 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4479 | afi_t afi, safi_t safi) |
4480 | { | |
4481 | int ret = 0; | |
4482 | struct prefix_evpn evp; | |
4483 | char buf[PREFIX_STRLEN]; | |
4484 | ||
31310b25 | 4485 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4486 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4487 | if (ret) { | |
af4c2728 | 4488 | flog_err( |
e50f7cfd | 4489 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4490 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4491 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4492 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4493 | } |
4494 | } | |
4495 | ||
342dd0c6 | 4496 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4497 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4498 | { |
4499 | struct bgp_table *table = NULL; | |
4500 | struct bgp_node *rn = NULL; | |
40381db7 | 4501 | struct bgp_path_info *pi; |
342dd0c6 | 4502 | |
053905d2 | 4503 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4504 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
f106e3a7 | 4505 | /* Only care about "selected" routes. Also ensure that |
4506 | * these are routes that are injectable into EVPN. | |
4507 | */ | |
25f2ca53 | 4508 | /* TODO: Support for AddPath for EVPN. */ |
6f94b685 | 4509 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4510 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4511 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 DS |
4512 | bgp_evpn_withdraw_type5_route( |
4513 | bgp_vrf, bgp_node_get_prefix(rn), afi, | |
4514 | safi); | |
25f2ca53 | 4515 | break; |
4516 | } | |
4517 | } | |
4518 | } | |
5424b7ba | 4519 | } |
342dd0c6 | 4520 | |
5fd9c12b KA |
4521 | /* |
4522 | * evpn - enable advertisement of default g/w | |
4523 | */ | |
4524 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4525 | safi_t safi, bool add) | |
4526 | { | |
4527 | struct prefix ip_prefix; | |
4528 | ||
4529 | /* form the default prefix 0.0.0.0/0 */ | |
4530 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4531 | ip_prefix.family = afi2family(afi); | |
4532 | ||
4533 | if (add) { | |
4534 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4535 | NULL, afi, safi); | |
4536 | } else { | |
4537 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4538 | afi, safi); | |
4539 | } | |
4540 | } | |
4541 | ||
4542 | ||
2f69f6d3 | 4543 | /* |
4544 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4545 | * to this function correspond to those of the source IP prefix (best | |
4546 | * path in the case of the attr. In the case of a local prefix (when we | |
4547 | * are advertising local subnets), the src_attr will be NULL. | |
4548 | */ | |
bd494ec5 | 4549 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4550 | struct attr *src_attr, afi_t afi, |
4551 | safi_t safi) | |
5424b7ba MK |
4552 | { |
4553 | int ret = 0; | |
4554 | struct prefix_evpn evp; | |
4555 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4556 | |
31310b25 | 4557 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4558 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4559 | if (ret) | |
e50f7cfd | 4560 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4561 | "%u: Failed to create type-5 route for prefix %s", |
4562 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4563 | } |
4564 | ||
2f69f6d3 | 4565 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4566 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4567 | * advertisement is enabled. | |
4568 | */ | |
996c9314 LB |
4569 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4570 | safi_t safi) | |
342dd0c6 | 4571 | { |
4572 | struct bgp_table *table = NULL; | |
4573 | struct bgp_node *rn = NULL; | |
40381db7 | 4574 | struct bgp_path_info *pi; |
342dd0c6 | 4575 | |
053905d2 | 4576 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4577 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4578 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4579 | * attribute. Also, ensure that the route is injectable |
4580 | * into EVPN. | |
2f69f6d3 | 4581 | * TODO: Support for AddPath for EVPN. |
4582 | */ | |
6f94b685 | 4583 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4584 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4585 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4586 | |
4587 | /* apply the route-map */ | |
4588 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4589 | route_map_result_t ret; |
e34291b8 | 4590 | struct bgp_path_info tmp_pi; |
4591 | struct bgp_path_info_extra tmp_pie; | |
4592 | struct attr tmp_attr; | |
4593 | ||
4594 | tmp_attr = *pi->attr; | |
4595 | ||
4596 | /* Fill temp path_info */ | |
4597 | prep_for_rmap_apply( | |
4598 | &tmp_pi, &tmp_pie, rn, pi, | |
4599 | pi->peer, &tmp_attr); | |
4600 | ||
4601 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4602 | |
996c9314 LB |
4603 | ret = route_map_apply( |
4604 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4605 | .map, | |
b54892e0 DS |
4606 | bgp_node_get_prefix(rn), |
4607 | RMAP_BGP, &tmp_pi); | |
e34291b8 | 4608 | if (ret == RMAP_DENYMATCH) { |
4609 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4610 | continue; |
e34291b8 | 4611 | } |
4612 | bgp_evpn_advertise_type5_route( | |
b54892e0 DS |
4613 | bgp_vrf, |
4614 | bgp_node_get_prefix(rn), | |
4615 | &tmp_attr, afi, safi); | |
e34291b8 | 4616 | } else |
4617 | bgp_evpn_advertise_type5_route( | |
b54892e0 DS |
4618 | bgp_vrf, |
4619 | bgp_node_get_prefix(rn), | |
4620 | pi->attr, afi, safi); | |
2f69f6d3 | 4621 | break; |
4622 | } | |
4623 | } | |
31310b25 | 4624 | } |
342dd0c6 | 4625 | } |
4626 | ||
996c9314 | 4627 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4628 | { |
4629 | struct listnode *node, *nnode, *node_to_del; | |
4630 | struct ecommunity *ecom, *ecom_auto; | |
4631 | struct ecommunity_val eval; | |
4632 | ||
bf1061d8 VB |
4633 | if (bgp->advertise_autort_rfc8365) |
4634 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4635 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4636 | ||
4637 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4638 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4639 | node_to_del = NULL; |
4640 | ||
4641 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4642 | if (ecommunity_match(ecom, ecom_auto)) { | |
4643 | ecommunity_free(&ecom); | |
4644 | node_to_del = node; | |
4645 | } | |
4646 | } | |
4647 | ||
4648 | if (node_to_del) | |
4649 | list_delete_node(rtl, node_to_del); | |
4650 | ||
4651 | ecommunity_free(&ecom_auto); | |
4652 | } | |
4653 | ||
4654 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4655 | struct ecommunity *ecomadd) |
c581d8b0 | 4656 | { |
5ba238b7 | 4657 | /* uninstall routes from vrf */ |
3d0b43d7 | 4658 | if (is_l3vni_live(bgp_vrf)) |
4659 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4660 | |
4661 | /* Cleanup the RT to VRF mapping */ | |
4662 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4663 | ||
c581d8b0 MK |
4664 | /* Remove auto generated RT */ |
4665 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4666 | ||
4667 | /* Add the newly configured RT to RT list */ | |
4668 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4669 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4670 | ||
3d0b43d7 | 4671 | /* map VRF to its RTs and install routes matching the new RTs */ |
4672 | if (is_l3vni_live(bgp_vrf)) { | |
4673 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4674 | install_routes_for_vrf(bgp_vrf); | |
4675 | } | |
c581d8b0 MK |
4676 | } |
4677 | ||
4678 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4679 | struct ecommunity *ecomdel) | |
4680 | { | |
4681 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4682 | struct ecommunity *ecom = NULL; | |
4683 | ||
5ba238b7 | 4684 | /* uninstall routes from vrf */ |
3d0b43d7 | 4685 | if (is_l3vni_live(bgp_vrf)) |
4686 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4687 | |
4688 | /* Cleanup the RT to VRF mapping */ | |
4689 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4690 | ||
c581d8b0 MK |
4691 | /* remove the RT from the RT list */ |
4692 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4693 | if (ecommunity_match(ecom, ecomdel)) { | |
4694 | ecommunity_free(&ecom); | |
4695 | node_to_del = node; | |
4696 | break; | |
4697 | } | |
4698 | } | |
4699 | ||
4700 | if (node_to_del) | |
4701 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4702 | ||
b3a4db3d | 4703 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4704 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4705 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4706 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4707 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4708 | } | |
4709 | ||
3d0b43d7 | 4710 | /* map VRFs to its RTs and install routes matching this new RT */ |
4711 | if (is_l3vni_live(bgp_vrf)) { | |
4712 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4713 | install_routes_for_vrf(bgp_vrf); | |
4714 | } | |
c581d8b0 MK |
4715 | } |
4716 | ||
4717 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4718 | struct ecommunity *ecomadd) | |
4719 | { | |
4720 | /* remove auto-generated RT */ | |
4721 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4722 | ||
4723 | /* Add the new RT to the RT list */ | |
4724 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4725 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4726 | ||
f1f8b53c | 4727 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4728 | } |
4729 | ||
4730 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4731 | struct ecommunity *ecomdel) | |
4732 | { | |
4733 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4734 | struct ecommunity *ecom = NULL; | |
4735 | ||
4736 | /* Remove the RT from the RT list */ | |
4737 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4738 | if (ecommunity_match(ecom, ecomdel)) { | |
4739 | ecommunity_free(&ecom); | |
4740 | node_to_del = node; | |
4741 | break; | |
4742 | } | |
4743 | } | |
4744 | ||
4745 | if (node_to_del) | |
4746 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4747 | ||
1525e99f DS |
4748 | /* |
4749 | * Temporary assert to make SA happy. | |
4750 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4751 | * which means that SA is going to complain about | |
4752 | * the list_isempty call, which doesn't NULL check. | |
4753 | * So until we get this situation cleaned up, here | |
4754 | * we are. | |
4755 | */ | |
4756 | assert(bgp_vrf->vrf_export_rtl); | |
4757 | ||
c581d8b0 | 4758 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4759 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4760 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4761 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4762 | } | |
4763 | ||
f1f8b53c | 4764 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4765 | } |
4766 | ||
2d48ee25 | 4767 | /* |
4768 | * Handle change to BGP router id. This is invoked twice by the change | |
4769 | * handler, first before the router id has been changed and then after | |
4770 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4771 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4772 | * will result in the routes being re-advertised. |
4773 | */ | |
d62a17ae | 4774 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4775 | { |
5394a276 CS |
4776 | struct listnode *node; |
4777 | struct bgp *bgp_vrf; | |
4778 | ||
676f83b9 | 4779 | if (withdraw) { |
4780 | ||
4781 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4782 | stored in the global table for this vrf |
4783 | */ | |
80b140af | 4784 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4785 | |
4786 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4787 | * L2-VNIs |
4788 | */ | |
d62a17ae | 4789 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4790 | (void (*)(struct hash_bucket *, |
d62a17ae | 4791 | void *))withdraw_router_id_vni, |
4792 | bgp); | |
5394a276 CS |
4793 | |
4794 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4795 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4796 | if (bgp_vrf->evpn_info->advertise_pip && | |
4797 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4798 | == INADDR_ANY)) | |
4799 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4800 | = INADDR_ANY; | |
4801 | } | |
4802 | } | |
676f83b9 | 4803 | } else { |
4804 | ||
5394a276 CS |
4805 | /* Assign new default instance router-id */ |
4806 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4807 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4808 | if (bgp_vrf->evpn_info->advertise_pip && | |
4809 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4810 | == INADDR_ANY)) { | |
4811 | bgp_vrf->evpn_info->pip_ip = | |
4812 | bgp->router_id; | |
4813 | /* advertise type-5 routes with | |
4814 | * new nexthop | |
4815 | */ | |
4816 | update_advertise_vrf_routes(bgp_vrf); | |
4817 | } | |
4818 | } | |
4819 | } | |
4820 | ||
676f83b9 | 4821 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4822 | * RD |
4823 | */ | |
80b140af | 4824 | update_router_id_vrf(bgp); |
676f83b9 | 4825 | |
4826 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4827 | * new RD |
4828 | */ | |
d62a17ae | 4829 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4830 | (void (*)(struct hash_bucket *, |
d62a17ae | 4831 | void *))update_router_id_vni, |
4832 | bgp); | |
676f83b9 | 4833 | } |
2d48ee25 | 4834 | } |
4835 | ||
bf1061d8 VB |
4836 | /* |
4837 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4838 | */ | |
4839 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4840 | { | |
4841 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4842 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4843 | void*))update_autort_vni, |
4844 | bgp); | |
4845 | } | |
4846 | ||
90e60aa7 | 4847 | /* |
4848 | * Handle change to export RT - update and advertise local routes. | |
4849 | */ | |
d62a17ae | 4850 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4851 | { |
d62a17ae | 4852 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4853 | } |
4854 | ||
996c9314 | 4855 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4856 | { |
4857 | if (withdraw) | |
4858 | delete_withdraw_vrf_routes(bgp_vrf); | |
4859 | else | |
4860 | update_advertise_vrf_routes(bgp_vrf); | |
4861 | } | |
4862 | ||
90e60aa7 | 4863 | /* |
4864 | * Handle change to RD. This is invoked twice by the change handler, | |
4865 | * first before the RD has been changed and then after the RD has | |
4866 | * been changed. The first invocation will result in local routes | |
4867 | * of this VNI being deleted and withdrawn and the next will result | |
4868 | * in the routes being re-advertised. | |
4869 | */ | |
d62a17ae | 4870 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4871 | int withdraw) | |
90e60aa7 | 4872 | { |
d62a17ae | 4873 | if (withdraw) |
4874 | delete_withdraw_vni_routes(bgp, vpn); | |
4875 | else | |
4876 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4877 | } |
4878 | ||
4879 | /* | |
4880 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4881 | */ | |
d62a17ae | 4882 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4883 | { |
d62a17ae | 4884 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4885 | } |
4886 | ||
4887 | /* | |
4888 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4889 | * to Import RT. | |
4890 | */ | |
d62a17ae | 4891 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4892 | { |
d62a17ae | 4893 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4894 | } |
4895 | ||
b16031a2 | 4896 | /* |
b57ba6d2 | 4897 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4898 | */ |
d7c0a89a | 4899 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4900 | int len) |
b16031a2 | 4901 | { |
b57ba6d2 | 4902 | vni_t vni1, vni2; |
b16031a2 | 4903 | |
b57ba6d2 MK |
4904 | vni1 = label2vni(label); |
4905 | if (num_labels == 2) { | |
996c9314 | 4906 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4907 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4908 | } else | |
4909 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4910 | return buf; |
b16031a2 | 4911 | } |
4912 | ||
9c92b5f7 MK |
4913 | /* |
4914 | * Function to convert evpn route to json format. | |
4915 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4916 | */ | |
bd494ec5 | 4917 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4918 | { |
b682f6de | 4919 | char buf1[ETHER_ADDR_STRLEN]; |
4920 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4921 | uint8_t family; |
4922 | uint8_t prefixlen; | |
9c92b5f7 | 4923 | |
b682f6de | 4924 | if (!json) |
4925 | return; | |
9c92b5f7 | 4926 | |
44c69747 LK |
4927 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4928 | ||
4929 | switch (p->prefix.route_type) { | |
4930 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4931 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4932 | p->prefix.macip_addr.eth_tag); |
4933 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4934 | json_object_string_add(json, "mac", | |
4935 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4936 | sizeof(buf1))); | |
4937 | ||
4938 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4939 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4940 | AF_INET6; | |
4941 | prefixlen = (family == AF_INET) ? | |
4942 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4943 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4944 | buf2, PREFIX2STR_BUFFER); | |
4945 | json_object_int_add(json, "ipLen", prefixlen); | |
4946 | json_object_string_add(json, "ip", buf2); | |
4947 | } | |
4948 | break; | |
dff8f48d | 4949 | |
44c69747 LK |
4950 | case BGP_EVPN_IMET_ROUTE: |
4951 | json_object_int_add(json, "ethTag", | |
4952 | p->prefix.imet_addr.eth_tag); | |
4953 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4954 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4955 | IPV6_MAX_BITLEN; | |
4956 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4957 | PREFIX2STR_BUFFER); | |
4958 | json_object_int_add(json, "ipLen", prefixlen); | |
4959 | json_object_string_add(json, "ip", buf2); | |
4960 | break; | |
dff8f48d | 4961 | |
44c69747 LK |
4962 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4963 | json_object_int_add(json, "ethTag", | |
4964 | p->prefix.prefix_addr.eth_tag); | |
4965 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4966 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4967 | buf2, sizeof(buf2)); | |
4968 | json_object_int_add(json, "ipLen", | |
4969 | p->prefix.prefix_addr.ip_prefix_length); | |
4970 | json_object_string_add(json, "ip", buf2); | |
4971 | break; | |
4972 | ||
4973 | default: | |
4974 | break; | |
dff8f48d | 4975 | } |
9c92b5f7 MK |
4976 | } |
4977 | ||
520d5d76 | 4978 | /* |
4979 | * Function to convert evpn route to string. | |
4980 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4981 | */ | |
bd494ec5 | 4982 | char *bgp_evpn_route2str(const struct prefix_evpn *p, char *buf, int len) |
d62a17ae | 4983 | { |
4984 | char buf1[ETHER_ADDR_STRLEN]; | |
4985 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4986 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4987 | |
4988 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4989 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4990 | p->prefix.imet_addr.eth_tag, |
4991 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4992 | : IPV6_MAX_BITLEN, |
3714a385 | 4993 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4994 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4995 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4996 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4997 | p->prefix.route_type, | |
3714a385 | 4998 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4999 | 8 * ETH_ALEN, |
3714a385 | 5000 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 5001 | sizeof(buf1))); |
5002 | else { | |
d7c0a89a | 5003 | uint8_t family; |
d62a17ae | 5004 | |
3714a385 | 5005 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 5006 | : AF_INET6; |
554cd77a VB |
5007 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
5008 | p->prefix.route_type, | |
3714a385 | 5009 | p->prefix.macip_addr.eth_tag, |
554cd77a | 5010 | 8 * ETH_ALEN, |
3714a385 | 5011 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 5012 | sizeof(buf1)), |
5013 | family == AF_INET ? IPV4_MAX_BITLEN | |
5014 | : IPV6_MAX_BITLEN, | |
3714a385 | 5015 | inet_ntop(family, |
5016 | &p->prefix.macip_addr.ip.ip.addr, | |
5017 | buf2, | |
d62a17ae | 5018 | PREFIX2STR_BUFFER)); |
5019 | } | |
342dd0c6 | 5020 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
5021 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
5022 | p->prefix.route_type, | |
3714a385 | 5023 | p->prefix.prefix_addr.eth_tag, |
5024 | p->prefix.prefix_addr.ip_prefix_length, | |
5025 | is_evpn_prefix_ipaddr_v4(p) | |
5026 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
5027 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 5028 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
5029 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
5030 | p->prefix.route_type, | |
5031 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
5032 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
5033 | : IPV6_MAX_BITLEN, | |
5034 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 5035 | } else { |
b03b8898 | 5036 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
5037 | snprintf(buf, len, "(unsupported route type %d)", |
5038 | p->prefix.route_type); | |
d62a17ae | 5039 | } |
5040 | ||
5041 | return (buf); | |
520d5d76 | 5042 | } |
5043 | ||
128ea8ab | 5044 | /* |
5045 | * Encode EVPN prefix in Update (MP_REACH) | |
5046 | */ | |
5f040085 DS |
5047 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5048 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
5049 | uint32_t num_labels, struct attr *attr, |
5050 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 5051 | { |
5052 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5053 | int len, ipa_len = 0; |
d62a17ae | 5054 | |
5055 | if (addpath_encode) | |
5056 | stream_putl(s, addpath_tx_id); | |
5057 | ||
5058 | /* Route type */ | |
5059 | stream_putc(s, evp->prefix.route_type); | |
5060 | ||
5061 | switch (evp->prefix.route_type) { | |
5062 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5063 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5064 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5065 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5066 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5067 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5068 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5069 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5070 | len += 3; | |
5071 | stream_putc(s, len); | |
996c9314 | 5072 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
5073 | if (attr) |
5074 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
5075 | else | |
5076 | stream_put(s, 0, 10); | |
3714a385 | 5077 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5078 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5079 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5080 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5081 | if (ipa_len) /* IP */ | |
5082 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5083 | ipa_len); | |
b57ba6d2 MK |
5084 | /* 1st label is the L2 VNI */ |
5085 | stream_put(s, label, BGP_LABEL_BYTES); | |
5086 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5087 | if (ipa_len && num_labels > 1) | |
996c9314 | 5088 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5089 | break; |
5090 | ||
5091 | case BGP_EVPN_IMET_ROUTE: | |
5092 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5093 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5094 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5095 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5096 | /* Originating Router's IP Addr */ | |
3714a385 | 5097 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5098 | break; |
5099 | ||
50f74cf1 | 5100 | case BGP_EVPN_ES_ROUTE: |
5101 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5102 | stream_put(s, prd->val, 8); /* RD */ | |
5103 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5104 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5105 | /* VTEP IP */ |
5106 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5107 | break; |
5108 | ||
d62a17ae | 5109 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5110 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5111 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5112 | break; |
5113 | ||
5114 | default: | |
5115 | break; | |
5116 | } | |
5117 | } | |
5118 | ||
5119 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5120 | struct bgp_nlri *packet, int withdraw) | |
5121 | { | |
d7c0a89a QY |
5122 | uint8_t *pnt; |
5123 | uint8_t *lim; | |
d62a17ae | 5124 | afi_t afi; |
5125 | safi_t safi; | |
d7c0a89a | 5126 | uint32_t addpath_id; |
d62a17ae | 5127 | int addpath_encoded; |
5128 | int psize = 0; | |
d7c0a89a | 5129 | uint8_t rtype; |
d62a17ae | 5130 | struct prefix p; |
5131 | ||
d62a17ae | 5132 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5133 | pnt = packet->nlri; | |
5134 | lim = pnt + packet->length; | |
5135 | afi = packet->afi; | |
5136 | safi = packet->safi; | |
5137 | addpath_id = 0; | |
5138 | ||
5139 | addpath_encoded = | |
5140 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
5141 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
5142 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
5143 | ||
5144 | for (; pnt < lim; pnt += psize) { | |
5145 | /* Clear prefix structure. */ | |
5146 | memset(&p, 0, sizeof(struct prefix)); | |
5147 | ||
5148 | /* Deal with path-id if AddPath is supported. */ | |
5149 | if (addpath_encoded) { | |
5150 | /* When packet overflow occurs return immediately. */ | |
5151 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5152 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5153 | |
a3a850a1 S |
5154 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5155 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5156 | pnt += BGP_ADDPATH_ID_LEN; |
5157 | } | |
5158 | ||
5159 | /* All EVPN NLRI types start with type and length. */ | |
5160 | if (pnt + 2 > lim) | |
513386b5 | 5161 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5162 | |
5163 | rtype = *pnt++; | |
3f54c705 | 5164 | psize = *pnt++; |
d62a17ae | 5165 | |
5166 | /* When packet overflow occur return immediately. */ | |
5167 | if (pnt + psize > lim) | |
513386b5 | 5168 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5169 | |
5170 | switch (rtype) { | |
5171 | case BGP_EVPN_MAC_IP_ROUTE: | |
5172 | if (process_type2_route(peer, afi, safi, | |
5173 | withdraw ? NULL : attr, pnt, | |
5174 | psize, addpath_id)) { | |
af4c2728 | 5175 | flog_err( |
e50f7cfd | 5176 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5177 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5178 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5179 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5180 | } |
5181 | break; | |
5182 | ||
5183 | case BGP_EVPN_IMET_ROUTE: | |
5184 | if (process_type3_route(peer, afi, safi, | |
5185 | withdraw ? NULL : attr, pnt, | |
5186 | psize, addpath_id)) { | |
af4c2728 | 5187 | flog_err( |
e50f7cfd | 5188 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5189 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5190 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5191 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5192 | } |
5193 | break; | |
5194 | ||
50f74cf1 | 5195 | case BGP_EVPN_ES_ROUTE: |
5196 | if (process_type4_route(peer, afi, safi, | |
5197 | withdraw ? NULL : attr, pnt, | |
5198 | psize, addpath_id)) { | |
af4c2728 | 5199 | flog_err( |
e50f7cfd | 5200 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5201 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5202 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5203 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5204 | } |
5205 | break; | |
5206 | ||
d62a17ae | 5207 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5208 | if (process_type5_route(peer, afi, safi, |
5209 | withdraw ? NULL : attr, pnt, | |
5210 | psize, addpath_id)) { | |
af4c2728 | 5211 | flog_err( |
e50f7cfd | 5212 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5213 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5214 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5215 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5216 | } |
5217 | break; | |
5218 | ||
5219 | default: | |
5220 | break; | |
5221 | } | |
5222 | } | |
5223 | ||
5224 | /* Packet length consistency check. */ | |
5225 | if (pnt != lim) | |
513386b5 | 5226 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5227 | |
513386b5 | 5228 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5229 | } |
5230 | ||
10ebe1ab MK |
5231 | /* |
5232 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5233 | * The mapping will be used during route processing. | |
5234 | * bgp_def: default bgp instance | |
5235 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5236 | */ | |
5237 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5238 | { | |
5239 | int i = 0; | |
5240 | struct ecommunity_val *eval = NULL; | |
5241 | struct listnode *node = NULL, *nnode = NULL; | |
5242 | struct ecommunity *ecom = NULL; | |
5243 | ||
5244 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5245 | for (i = 0; i < ecom->size; i++) { | |
5246 | eval = (struct ecommunity_val *)(ecom->val | |
5247 | + (i | |
5248 | * ECOMMUNITY_SIZE)); | |
5249 | map_vrf_to_rt(bgp_vrf, eval); | |
5250 | } | |
5251 | } | |
5252 | } | |
5253 | ||
5254 | /* | |
5255 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5256 | */ | |
5257 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5258 | { | |
5259 | int i; | |
5260 | struct ecommunity_val *eval; | |
5261 | struct listnode *node, *nnode; | |
5262 | struct ecommunity *ecom; | |
5263 | ||
5264 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5265 | for (i = 0; i < ecom->size; i++) { | |
5266 | struct vrf_irt_node *irt; | |
5267 | struct ecommunity_val eval_tmp; | |
5268 | ||
5269 | eval = (struct ecommunity_val *)(ecom->val | |
5270 | + (i | |
5271 | * ECOMMUNITY_SIZE)); | |
5272 | /* If using "automatic" RT, we only care about the | |
5273 | * local-admin sub-field. | |
5274 | * This is to facilitate using VNI as the RT for EBGP | |
5275 | * peering too. | |
5276 | */ | |
5277 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5278 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5279 | BGP_VRF_IMPORT_RT_CFGD)) | |
5280 | mask_ecom_global_admin(&eval_tmp, eval); | |
5281 | ||
5282 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5283 | if (irt) | |
5284 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5285 | } | |
5286 | } | |
5287 | } | |
5288 | ||
5289 | ||
128ea8ab | 5290 | /* |
5291 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5292 | * The mapping will be used during route processing. | |
5293 | */ | |
d62a17ae | 5294 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5295 | { |
d62a17ae | 5296 | int i; |
5297 | struct ecommunity_val *eval; | |
5298 | struct listnode *node, *nnode; | |
5299 | struct ecommunity *ecom; | |
128ea8ab | 5300 | |
d62a17ae | 5301 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5302 | for (i = 0; i < ecom->size; i++) { | |
5303 | eval = (struct ecommunity_val *)(ecom->val | |
5304 | + (i | |
5305 | * ECOMMUNITY_SIZE)); | |
5306 | map_vni_to_rt(bgp, vpn, eval); | |
5307 | } | |
5308 | } | |
128ea8ab | 5309 | } |
5310 | ||
5311 | /* | |
5312 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5313 | */ | |
d62a17ae | 5314 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5315 | { |
d62a17ae | 5316 | int i; |
5317 | struct ecommunity_val *eval; | |
5318 | struct listnode *node, *nnode; | |
5319 | struct ecommunity *ecom; | |
128ea8ab | 5320 | |
d62a17ae | 5321 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5322 | for (i = 0; i < ecom->size; i++) { | |
5323 | struct irt_node *irt; | |
5324 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5325 | |
d62a17ae | 5326 | eval = (struct ecommunity_val *)(ecom->val |
5327 | + (i | |
5328 | * ECOMMUNITY_SIZE)); | |
5329 | /* If using "automatic" RT, we only care about the | |
5330 | * local-admin sub-field. | |
5331 | * This is to facilitate using VNI as the RT for EBGP | |
5332 | * peering too. | |
5333 | */ | |
5334 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5335 | if (!is_import_rt_configured(vpn)) | |
5336 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5337 | |
d62a17ae | 5338 | irt = lookup_import_rt(bgp, &eval_tmp); |
5339 | if (irt) | |
5340 | unmap_vni_from_rt(bgp, vpn, irt); | |
5341 | } | |
5342 | } | |
128ea8ab | 5343 | } |
5344 | ||
5345 | /* | |
5346 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5347 | * The mapping will be used during route processing. | |
5348 | */ | |
d62a17ae | 5349 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5350 | { |
c581d8b0 | 5351 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5352 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5353 | |
d62a17ae | 5354 | /* Map RT to VNI */ |
5355 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5356 | } |
5357 | ||
5358 | /* | |
5359 | * Derive Export RT automatically for VNI. | |
5360 | */ | |
d62a17ae | 5361 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5362 | { |
c581d8b0 | 5363 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5364 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5365 | } |
5366 | ||
676f83b9 | 5367 | /* |
5368 | * Derive RD automatically for VNI using passed information - it | |
5369 | * is of the form RouterId:unique-id-for-vni. | |
5370 | */ | |
5371 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5372 | { | |
9e97ff03 CS |
5373 | if (is_vrf_rd_configured(bgp)) |
5374 | return; | |
5375 | ||
92708db6 | 5376 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5377 | } |
5378 | ||
128ea8ab | 5379 | /* |
5380 | * Derive RD automatically for VNI using passed information - it | |
5381 | * is of the form RouterId:unique-id-for-vni. | |
5382 | */ | |
d62a17ae | 5383 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5384 | { |
d62a17ae | 5385 | char buf[100]; |
128ea8ab | 5386 | |
d62a17ae | 5387 | vpn->prd.family = AF_UNSPEC; |
5388 | vpn->prd.prefixlen = 64; | |
5389 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5390 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5391 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5392 | } |
5393 | ||
7df407ed CS |
5394 | /* |
5395 | * Lookup L3-VNI | |
5396 | */ | |
5397 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5398 | { | |
5399 | struct list *inst = bm->bgp; | |
5400 | struct listnode *node; | |
5401 | struct bgp *bgp_vrf; | |
5402 | ||
5403 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5404 | if (bgp_vrf->l3vni == vni) | |
5405 | return true; | |
5406 | } | |
5407 | ||
5408 | return false; | |
5409 | } | |
5410 | ||
128ea8ab | 5411 | /* |
5412 | * Lookup VNI. | |
5413 | */ | |
d62a17ae | 5414 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5415 | { |
d62a17ae | 5416 | struct bgpevpn *vpn; |
5417 | struct bgpevpn tmp; | |
128ea8ab | 5418 | |
d62a17ae | 5419 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5420 | tmp.vni = vni; | |
5421 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5422 | return vpn; | |
128ea8ab | 5423 | } |
5424 | ||
5425 | /* | |
5426 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5427 | */ | |
d62a17ae | 5428 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5429 | struct in_addr originator_ip, |
5430 | vrf_id_t tenant_vrf_id, | |
5431 | struct in_addr mcast_grp) | |
128ea8ab | 5432 | { |
d62a17ae | 5433 | struct bgpevpn *vpn; |
128ea8ab | 5434 | |
d62a17ae | 5435 | if (!bgp) |
5436 | return NULL; | |
128ea8ab | 5437 | |
d62a17ae | 5438 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5439 | |
d62a17ae | 5440 | /* Set values - RD and RT set to defaults. */ |
5441 | vpn->vni = vni; | |
5442 | vpn->originator_ip = originator_ip; | |
29c53922 | 5443 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5444 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5445 | |
d62a17ae | 5446 | /* Initialize route-target import and export lists */ |
5447 | vpn->import_rtl = list_new(); | |
5448 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5449 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5450 | vpn->export_rtl = list_new(); |
5451 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5452 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5453 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5454 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5455 | |
d62a17ae | 5456 | /* Initialize EVPN route table. */ |
960035b2 | 5457 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5458 | |
d62a17ae | 5459 | /* Add to hash */ |
5460 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5461 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5462 | return NULL; | |
5463 | } | |
6a8657d0 MK |
5464 | |
5465 | /* add to l2vni list on corresponding vrf */ | |
5466 | bgpevpn_link_to_l3vni(vpn); | |
5467 | ||
d62a17ae | 5468 | QOBJ_REG(vpn, bgpevpn); |
5469 | return vpn; | |
128ea8ab | 5470 | } |
5471 | ||
5472 | /* | |
5473 | * Free a given VPN - called in multiple scenarios such as zebra | |
5474 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5475 | * This just frees appropriate memory, caller should have taken other | |
5476 | * needed actions. | |
5477 | */ | |
d62a17ae | 5478 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5479 | { |
6a8657d0 | 5480 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5481 | bgp_table_unlock(vpn->route_table); |
5482 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5483 | list_delete(&vpn->import_rtl); |
5484 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5485 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5486 | hash_release(bgp->vnihash, vpn); |
5487 | QOBJ_UNREG(vpn); | |
5488 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5489 | } |
5490 | ||
5491 | /* | |
50f74cf1 | 5492 | * Lookup local ES. |
5493 | */ | |
5494 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5495 | { | |
5496 | struct evpnes *es; | |
5497 | struct evpnes tmp; | |
5498 | ||
5499 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5500 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5501 | es = hash_lookup(bgp->esihash, &tmp); | |
5502 | return es; | |
5503 | } | |
5504 | ||
5505 | /* | |
5506 | * Create a new local es - invoked upon zebra notification. | |
5507 | */ | |
5508 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5509 | esi_t *esi, | |
5510 | struct ipaddr *originator_ip) | |
5511 | { | |
5512 | char buf[100]; | |
5513 | struct evpnes *es; | |
5514 | ||
5515 | if (!bgp) | |
5516 | return NULL; | |
5517 | ||
5518 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5519 | |
5520 | /* set the ESI and originator_ip */ | |
5521 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5522 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5523 | ||
5524 | /* Initialise the VTEP list */ | |
5525 | es->vtep_list = list_new(); | |
ce167790 | 5526 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5527 | |
5528 | /* auto derive RD for this es */ | |
5529 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5530 | es->prd.family = AF_UNSPEC; | |
5531 | es->prd.prefixlen = 64; | |
5532 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5533 | (void)str2prefix_rd(buf, &es->prd); | |
5534 | ||
5535 | /* Initialize the ES route table */ | |
5536 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5537 | ||
5538 | /* Add to hash */ | |
5539 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5540 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5541 | return NULL; | |
5542 | } | |
5543 | ||
5544 | QOBJ_REG(es, evpnes); | |
5545 | return es; | |
5546 | } | |
5547 | ||
5548 | /* | |
5549 | * Free a given ES - | |
5550 | * This just frees appropriate memory, caller should have taken other | |
5551 | * needed actions. | |
5552 | */ | |
5553 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5554 | { | |
6a154c88 | 5555 | list_delete(&es->vtep_list); |
50f74cf1 | 5556 | bgp_table_unlock(es->route_table); |
5557 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5558 | hash_release(bgp->esihash, es); | |
5559 | QOBJ_UNREG(es); | |
5560 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5561 | } | |
5562 | ||
5563 | /* | |
5564 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5565 | */ |
d62a17ae | 5566 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5567 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5568 | { |
40381db7 | 5569 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5570 | } |
5571 | ||
5572 | /* | |
50f74cf1 | 5573 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5574 | */ |
d62a17ae | 5575 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5576 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5577 | { |
40381db7 | 5578 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5579 | } |
5580 | ||
db0e1937 MK |
5581 | /* filter routes which have martian next hops */ |
5582 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5583 | { | |
0291c246 MK |
5584 | afi_t afi; |
5585 | safi_t safi; | |
5586 | struct bgp_node *rd_rn, *rn; | |
5587 | struct bgp_table *table; | |
40381db7 | 5588 | struct bgp_path_info *pi; |
db0e1937 MK |
5589 | |
5590 | afi = AFI_L2VPN; | |
5591 | safi = SAFI_EVPN; | |
5592 | ||
5593 | /* Walk entire global routing table and evaluate routes which could be | |
5594 | * imported into this VPN. Note that we cannot just look at the routes | |
5595 | * for the VNI's RD - | |
5596 | * remote routes applicable for this VNI could have any RD. | |
5597 | */ | |
5598 | /* EVPN routes are a 2-level table. */ | |
5599 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5600 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5601 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5602 | if (!table) |
5603 | continue; | |
5604 | ||
5605 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5606 | ||
6f94b685 DS |
5607 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5608 | pi = pi->next) { | |
db0e1937 MK |
5609 | |
5610 | /* Consider "valid" remote routes applicable for | |
5611 | * this VNI. */ | |
40381db7 DS |
5612 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5613 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5614 | continue; |
949b0f24 | 5615 | if (bgp_nexthop_self(bgp, afi, |
5616 | pi->type, pi->sub_type, | |
5617 | pi->attr, rn)) { | |
b54892e0 DS |
5618 | const struct prefix *p = |
5619 | bgp_node_get_prefix(rn); | |
db0e1937 | 5620 | |
b54892e0 DS |
5621 | if (bgp_debug_update(pi->peer, p, NULL, |
5622 | 1)) { | |
5623 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5624 | |
b54892e0 DS |
5625 | bgp_dump_attr(pi->attr, |
5626 | attr_str, BUFSIZ); | |
db0e1937 | 5627 | |
db0e1937 | 5628 | zlog_debug( |
b54892e0 DS |
5629 | "%u: prefix %pRN with attr %s - DENIED due to martian or self nexthop", |
5630 | bgp->vrf_id, rn, | |
db0e1937 | 5631 | attr_str); |
b54892e0 | 5632 | } |
db0e1937 | 5633 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5634 | p, pi); |
db0e1937 | 5635 | |
40381db7 | 5636 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5637 | safi); |
db0e1937 | 5638 | } |
db0e1937 MK |
5639 | } |
5640 | } | |
5641 | } | |
5642 | ||
5643 | return 0; | |
5644 | } | |
5645 | ||
128ea8ab | 5646 | /* |
5647 | * Handle del of a local MACIP. | |
5648 | */ | |
d62a17ae | 5649 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5650 | struct ipaddr *ip, int state) |
128ea8ab | 5651 | { |
d62a17ae | 5652 | struct bgpevpn *vpn; |
5653 | struct prefix_evpn p; | |
ec0ab544 | 5654 | struct bgp_node *rn; |
128ea8ab | 5655 | |
d62a17ae | 5656 | /* Lookup VNI hash - should exist. */ |
5657 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5658 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5659 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5660 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5661 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5662 | return -1; | |
5663 | } | |
128ea8ab | 5664 | |
d62a17ae | 5665 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5666 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5667 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5668 | delete_evpn_route(bgp, vpn, &p); | |
5669 | } else { | |
5670 | /* Re-instate the current remote best path if any */ | |
5671 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5672 | if (rn) | |
5673 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5674 | } | |
128ea8ab | 5675 | |
d62a17ae | 5676 | return 0; |
128ea8ab | 5677 | } |
5678 | ||
5679 | /* | |
5680 | * Handle add of a local MACIP. | |
5681 | */ | |
d62a17ae | 5682 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5683 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5684 | { |
d62a17ae | 5685 | struct bgpevpn *vpn; |
5686 | struct prefix_evpn p; | |
128ea8ab | 5687 | |
d62a17ae | 5688 | /* Lookup VNI hash - should exist. */ |
5689 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5690 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5691 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5692 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5693 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5694 | return -1; | |
5695 | } | |
128ea8ab | 5696 | |
d62a17ae | 5697 | /* Create EVPN type-2 route and schedule for processing. */ |
5698 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5699 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5700 | char buf[ETHER_ADDR_STRLEN]; |
5701 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5702 | |
af4c2728 | 5703 | flog_err( |
e50f7cfd | 5704 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5705 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5706 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5707 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5708 | ? "sticky gateway" | |
5709 | : "", | |
d62a17ae | 5710 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5711 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5712 | return -1; |
5713 | } | |
128ea8ab | 5714 | |
d62a17ae | 5715 | return 0; |
128ea8ab | 5716 | } |
5717 | ||
e3b78da8 | 5718 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5719 | struct bgp *bgp_vrf) |
5720 | { | |
e3b78da8 | 5721 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5722 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5723 | |
5e53dce3 T |
5724 | bgp_evpn = bgp_get_evpn(); |
5725 | assert(bgp_evpn); | |
6a8657d0 | 5726 | |
6a8657d0 MK |
5727 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5728 | bgpevpn_link_to_l3vni(vpn); | |
5729 | } | |
5730 | ||
14e814ea CS |
5731 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5732 | struct ethaddr *svi_rmac, | |
5733 | struct ethaddr *vrr_rmac, | |
0483af6e | 5734 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5735 | ifindex_t svi_ifindex, |
5736 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5737 | { |
5738 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5739 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5740 | struct listnode *node = NULL; |
5741 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5742 | as_t as = 0; |
5743 | ||
3621ebc5 | 5744 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5745 | * auto-creatio |
5746 | */ | |
5e53dce3 T |
5747 | bgp_evpn = bgp_get_evpn(); |
5748 | if (!bgp_evpn) { | |
af4c2728 | 5749 | flog_err( |
e50f7cfd | 5750 | EC_BGP_NO_DFLT, |
3621ebc5 | 5751 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5752 | l3vni); |
fe1dc5a3 MK |
5753 | return -1; |
5754 | } | |
5e53dce3 | 5755 | as = bgp_evpn->as; |
fe1dc5a3 | 5756 | |
0437e105 | 5757 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5758 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5759 | if (!bgp_vrf) { |
5760 | ||
5761 | int ret = 0; | |
5762 | ||
5d5393b9 DL |
5763 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5764 | vrf_id == VRF_DEFAULT | |
5765 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5766 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5767 | switch (ret) { |
fe1dc5a3 | 5768 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5769 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5770 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5771 | return -1; |
5772 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5773 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5774 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5775 | return -1; |
5776 | } | |
5777 | ||
5778 | /* mark as auto created */ | |
5779 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5780 | } | |
5781 | ||
0483af6e | 5782 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5783 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5784 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5785 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5786 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5787 | |
14e814ea CS |
5788 | /* copy anycast MAC from VRR MAC */ |
5789 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5790 | /* copy sys RMAC from SVI MAC */ | |
5791 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5792 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5793 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5794 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5795 | ||
5796 | if (bgp_debug_zebra(NULL)) { | |
5797 | char buf[ETHER_ADDR_STRLEN]; | |
5798 | char buf1[ETHER_ADDR_STRLEN]; | |
5799 | char buf2[ETHER_ADDR_STRLEN]; | |
5800 | ||
5801 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5802 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5803 | bgp_vrf->l3vni, | |
5804 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5805 | : "disable", | |
5806 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5807 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5808 | buf1, sizeof(buf1)), | |
5809 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5810 | buf2, sizeof(buf2)), | |
5811 | is_anycast_mac ? "Enable" : "Disable"); | |
5812 | } | |
c48d9f5f MK |
5813 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5814 | if (filter) | |
5815 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5816 | ||
530e8a6e | 5817 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5818 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5819 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5820 | else |
5821 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5822 | ||
c581d8b0 MK |
5823 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5824 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5825 | |
5826 | /* auto derive RD */ | |
676f83b9 | 5827 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5828 | |
6a8657d0 | 5829 | /* link all corresponding l2vnis */ |
5e53dce3 | 5830 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5831 | (void (*)(struct hash_bucket *, |
996c9314 | 5832 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5833 | bgp_vrf); |
5834 | ||
c48d9f5f MK |
5835 | /* Only update all corresponding type-2 routes if we are advertising two |
5836 | * labels along with type-2 routes | |
5837 | */ | |
5838 | if (!filter) | |
5839 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5840 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5841 | |
06d2e8f3 MK |
5842 | /* advertise type-5 routes if needed */ |
5843 | update_advertise_vrf_routes(bgp_vrf); | |
5844 | ||
5ba238b7 MK |
5845 | /* install all remote routes belonging to this l3vni into correspondng |
5846 | * vrf */ | |
5847 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5848 | |
5849 | return 0; | |
5850 | } | |
5851 | ||
996c9314 | 5852 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5853 | { |
5854 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5855 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5856 | struct listnode *node = NULL; |
18abc1eb | 5857 | struct listnode *next = NULL; |
f1f8b53c | 5858 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5859 | |
5860 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5861 | if (!bgp_vrf) { | |
af4c2728 | 5862 | flog_err( |
e50f7cfd | 5863 | EC_BGP_NO_DFLT, |
996c9314 LB |
5864 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5865 | l3vni); | |
fe1dc5a3 MK |
5866 | return -1; |
5867 | } | |
5868 | ||
5e53dce3 T |
5869 | bgp_evpn = bgp_get_evpn(); |
5870 | if (!bgp_evpn) { | |
af4c2728 | 5871 | flog_err( |
e50f7cfd | 5872 | EC_BGP_NO_DFLT, |
3621ebc5 | 5873 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5874 | l3vni); |
f1f8b53c MK |
5875 | return -1; |
5876 | } | |
5877 | ||
d846168d | 5878 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5879 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5880 | * routes. This will uninstalling the routes from zebra and decremnt the |
5881 | * bgp info count. | |
523cafc4 | 5882 | */ |
d846168d | 5883 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5884 | |
06d2e8f3 MK |
5885 | /* delete/withdraw all type-5 routes */ |
5886 | delete_withdraw_vrf_routes(bgp_vrf); | |
5887 | ||
fe1dc5a3 MK |
5888 | /* remove the l3vni from vrf instance */ |
5889 | bgp_vrf->l3vni = 0; | |
5890 | ||
5891 | /* remove the Rmac from the BGP vrf */ | |
5892 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5893 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5894 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5895 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5896 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5897 | |
530e8a6e | 5898 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5899 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5900 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5901 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5902 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5903 | } |
530e8a6e CS |
5904 | |
5905 | /* remove default export RT */ | |
5906 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5907 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5908 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5909 | } |
fe1dc5a3 | 5910 | |
f1f8b53c | 5911 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5912 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5913 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5914 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5915 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5916 | } |
5917 | } | |
fe1dc5a3 | 5918 | |
18abc1eb | 5919 | /* If any L2VNIs point to this instance, unlink them. */ |
5920 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5921 | bgpevpn_unlink_from_l3vni(vpn); | |
5922 | ||
ff9d54fb CS |
5923 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5924 | ||
fe1dc5a3 MK |
5925 | /* Delete the instance if it was autocreated */ |
5926 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5927 | bgp_delete(bgp_vrf); | |
5928 | ||
5929 | return 0; | |
5930 | } | |
5931 | ||
128ea8ab | 5932 | /* |
5933 | * Handle del of a local VNI. | |
5934 | */ | |
d62a17ae | 5935 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5936 | { |
d62a17ae | 5937 | struct bgpevpn *vpn; |
128ea8ab | 5938 | |
d62a17ae | 5939 | /* Locate VNI hash */ |
5940 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5941 | if (!vpn) { | |
1e00627b | 5942 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5943 | flog_warn( |
e50f7cfd | 5944 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5945 | "%u: VNI hash entry for VNI %u not found at DEL", |
5946 | bgp->vrf_id, vni); | |
d62a17ae | 5947 | return 0; |
5948 | } | |
128ea8ab | 5949 | |
d62a17ae | 5950 | /* Remove all local EVPN routes and schedule for processing (to |
5951 | * withdraw from peers). | |
5952 | */ | |
5953 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5954 | |
db0e1937 MK |
5955 | /* |
5956 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5957 | */ | |
5958 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5959 | ||
d62a17ae | 5960 | /* Clear "live" flag and see if hash needs to be freed. */ |
5961 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5962 | if (!is_vni_configured(vpn)) | |
5963 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5964 | |
d62a17ae | 5965 | return 0; |
128ea8ab | 5966 | } |
5967 | ||
5968 | /* | |
d1911c26 | 5969 | * Handle add (or update) of a local VNI. The VNI changes we care |
5970 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5971 | */ |
d62a17ae | 5972 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5973 | struct in_addr originator_ip, |
5974 | vrf_id_t tenant_vrf_id, | |
5975 | struct in_addr mcast_grp) | |
5976 | ||
d62a17ae | 5977 | { |
5978 | struct bgpevpn *vpn; | |
5979 | struct prefix_evpn p; | |
5980 | ||
d62a17ae | 5981 | /* Lookup VNI. If present and no change, exit. */ |
5982 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5983 | if (vpn) { |
29c53922 | 5984 | |
d1911c26 | 5985 | if (is_vni_live(vpn) |
5986 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5987 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5988 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5989 | /* Probably some other param has changed that we don't | |
5990 | * care about. */ | |
5991 | return 0; | |
5992 | ||
76d07c7a AK |
5993 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5994 | ||
d1911c26 | 5995 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5996 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5997 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5998 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5999 | bgpevpn_link_to_l3vni(vpn); |
6000 | } | |
29c53922 | 6001 | |
d1911c26 | 6002 | /* If tunnel endpoint IP has changed, update (and delete prior |
6003 | * type-3 route, if needed.) | |
6004 | */ | |
6005 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
6006 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 6007 | |
d1911c26 | 6008 | /* Update all routes with new endpoint IP and/or export RT |
6009 | * for VRFs | |
6010 | */ | |
6011 | if (is_vni_live(vpn)) | |
6012 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 6013 | } |
6014 | ||
6015 | /* Create or update as appropriate. */ | |
6016 | if (!vpn) { | |
76d07c7a AK |
6017 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
6018 | mcast_grp); | |
d62a17ae | 6019 | if (!vpn) { |
af4c2728 | 6020 | flog_err( |
e50f7cfd | 6021 | EC_BGP_VNI, |
d62a17ae | 6022 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
6023 | bgp->vrf_id, vni); | |
6024 | return -1; | |
6025 | } | |
6026 | } | |
6027 | ||
db0e1937 | 6028 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6029 | if (is_vni_live(vpn)) |
6030 | return 0; | |
6031 | ||
d62a17ae | 6032 | /* Mark as "live" */ |
6033 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6034 | ||
db0e1937 MK |
6035 | /* tunnel is now active, add tunnel-ip to db */ |
6036 | bgp_tip_add(bgp, &originator_ip); | |
6037 | ||
6038 | /* filter routes as nexthop database has changed */ | |
6039 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
6040 | ||
fd069644 DS |
6041 | /* |
6042 | * Create EVPN type-3 route and schedule for processing. | |
6043 | * | |
6044 | * RT-3 only if doing head-end replication | |
6045 | */ | |
833b8a50 AK |
6046 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6047 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
6048 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
6049 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
6050 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
6051 | "%u: Type3 route creation failure for VNI %u", | |
6052 | bgp->vrf_id, vni); | |
6053 | return -1; | |
6054 | } | |
d62a17ae | 6055 | } |
6056 | ||
6057 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6058 | * VNI, | |
6059 | * install them. | |
6060 | */ | |
6061 | install_routes_for_vni(bgp, vpn); | |
6062 | ||
d7d97010 MK |
6063 | /* If we are advertising gateway mac-ip |
6064 | It needs to be conveyed again to zebra */ | |
6065 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6066 | ||
df070e6f CS |
6067 | /* advertise svi mac-ip knob to zebra */ |
6068 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6069 | ||
d62a17ae | 6070 | return 0; |
b18825eb | 6071 | } |
14c1a7bf | 6072 | |
50f74cf1 | 6073 | /* |
6074 | * bgp_evpn_local_es_del | |
6075 | */ | |
6076 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
6077 | esi_t *esi, | |
6078 | struct ipaddr *originator_ip) | |
6079 | { | |
6080 | char buf[ESI_STR_LEN]; | |
6081 | struct evpnes *es = NULL; | |
6082 | ||
6083 | if (!bgp->esihash) { | |
e50f7cfd | 6084 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6085 | bgp->vrf_id); |
50f74cf1 | 6086 | return -1; |
6087 | } | |
6088 | ||
6089 | /* Lookup ESI hash - should exist. */ | |
6090 | es = bgp_evpn_lookup_es(bgp, esi); | |
6091 | if (!es) { | |
e50f7cfd | 6092 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
6093 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
6094 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6095 | return -1; |
6096 | } | |
6097 | ||
6098 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 6099 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 6100 | */ |
6101 | delete_routes_for_es(bgp, es); | |
6102 | ||
6103 | /* free the hash entry */ | |
6104 | bgp_evpn_es_free(bgp, es); | |
6105 | ||
6106 | return 0; | |
6107 | } | |
6108 | ||
6109 | /* | |
6110 | * bgp_evpn_local_es_add | |
6111 | */ | |
6112 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
6113 | esi_t *esi, | |
6114 | struct ipaddr *originator_ip) | |
6115 | { | |
6116 | char buf[ESI_STR_LEN]; | |
6117 | struct evpnes *es = NULL; | |
6118 | struct prefix_evpn p; | |
6119 | ||
6120 | if (!bgp->esihash) { | |
e50f7cfd | 6121 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6122 | bgp->vrf_id); |
50f74cf1 | 6123 | return -1; |
6124 | } | |
6125 | ||
6126 | /* create the new es */ | |
2bb9eff4 | 6127 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 6128 | if (!es) { |
6129 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
6130 | if (!es) { | |
af4c2728 | 6131 | flog_err( |
e50f7cfd | 6132 | EC_BGP_ES_CREATE, |
50f74cf1 | 6133 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
6134 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
6135 | return -1; | |
6136 | } | |
6137 | } | |
6138 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
6139 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
6140 | ||
6141 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
6142 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 6143 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
6144 | "%u: Type4 route creation failure for ESI %s", |
6145 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6146 | return -1; |
6147 | } | |
6148 | ||
6149 | /* import all remote ES routes in th ES table */ | |
6150 | install_routes_for_es(bgp, es); | |
6151 | ||
6152 | return 0; | |
6153 | } | |
6154 | ||
fd069644 DS |
6155 | /* |
6156 | * Handle change in setting for BUM handling. The supported values | |
6157 | * are head-end replication and dropping all BUM packets. Any change | |
6158 | * should be registered with zebra. Also, if doing head-end replication, | |
6159 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6160 | * to be dropped, the RT-3s must be withdrawn. | |
6161 | */ | |
6162 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6163 | { | |
6164 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6165 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6166 | "Flooding" : "Flooding Disabled"); | |
6167 | ||
6168 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6169 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6170 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6171 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6172 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6173 | } | |
6174 | ||
7724c0a1 | 6175 | /* |
6176 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6177 | * EVPN routes from peers. | |
6178 | */ | |
d62a17ae | 6179 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6180 | { |
e3b78da8 | 6181 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6182 | void *))cleanup_vni_on_disable, |
6183 | bgp); | |
7724c0a1 | 6184 | } |
6185 | ||
14c1a7bf | 6186 | /* |
6187 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6188 | * BGP instance (default) is being freed. | |
6189 | */ | |
d62a17ae | 6190 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6191 | { |
1525e99f | 6192 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6193 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6194 | bgp); |
6195 | ||
6196 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 6197 | bgp->import_rt_hash = NULL; |
1525e99f DS |
6198 | |
6199 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 6200 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
6201 | |
6202 | hash_free(bgp->vnihash); | |
d62a17ae | 6203 | bgp->vnihash = NULL; |
50f74cf1 | 6204 | if (bgp->esihash) |
6205 | hash_free(bgp->esihash); | |
6206 | bgp->esihash = NULL; | |
1525e99f | 6207 | |
6a154c88 DL |
6208 | list_delete(&bgp->vrf_import_rtl); |
6209 | list_delete(&bgp->vrf_export_rtl); | |
6210 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6211 | } |
6212 | ||
6213 | /* | |
6214 | * Initialization for EVPN | |
6215 | * Create | |
6216 | * VNI hash table | |
6217 | * hash for RT to VNI | |
14c1a7bf | 6218 | */ |
d62a17ae | 6219 | void bgp_evpn_init(struct bgp *bgp) |
6220 | { | |
6221 | bgp->vnihash = | |
6222 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 6223 | bgp->esihash = |
6224 | hash_create(esi_hash_keymake, esi_cmp, | |
6225 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 6226 | bgp->import_rt_hash = |
6227 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6228 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6229 | bgp->vrf_import_rt_hash = |
6230 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6231 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6232 | bgp->vrf_import_rtl = list_new(); |
6233 | bgp->vrf_import_rtl->cmp = | |
6234 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6235 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
6236 | bgp->vrf_export_rtl = list_new(); |
6237 | bgp->vrf_export_rtl->cmp = | |
6238 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6239 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 6240 | bgp->l2vnis = list_new(); |
64465785 | 6241 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6242 | /* By default Duplicate Address Dection is enabled. |
6243 | * Max-moves (N) 5, detection time (M) 180 | |
6244 | * default action is warning-only | |
6245 | * freeze action permanently freezes address, | |
6246 | * and freeze time (auto-recovery) is disabled. | |
6247 | */ | |
6248 | if (bgp->evpn_info) { | |
6249 | bgp->evpn_info->dup_addr_detect = true; | |
6250 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6251 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6252 | bgp->evpn_info->dad_freeze = false; | |
6253 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6254 | /* Initialize zebra vxlan */ |
6255 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6256 | /* Enable PIP feature by default for bgp vrf instance */ |
6257 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6258 | struct bgp *bgp_default; | |
6259 | ||
6260 | bgp->evpn_info->advertise_pip = true; | |
6261 | bgp_default = bgp_get_default(); | |
6262 | if (bgp_default) | |
6263 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6264 | } | |
85c8d83b | 6265 | } |
fd069644 DS |
6266 | |
6267 | /* Default BUM handling is to do head-end replication. */ | |
6268 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 6269 | } |
10ebe1ab MK |
6270 | |
6271 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6272 | { | |
6273 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
6274 | } | |
44c69747 LK |
6275 | |
6276 | /* | |
6277 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6278 | */ | |
5f040085 | 6279 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6280 | { |
6281 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6282 | ||
6283 | if (!pfx || pfx->family != AF_EVPN) | |
6284 | return 0; | |
6285 | ||
6286 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6287 | return 0; | |
6288 | ||
6289 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6290 | } | |
7c312383 AD |
6291 | |
6292 | /* | |
6293 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6294 | */ | |
5a1ae2c2 | 6295 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6296 | { |
6297 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6298 | ||
6299 | /* | |
6300 | * EVPN RT-5 should not be marked as valid and imported to vrfs if the | |
6301 | * BGP nexthop is not reachable. To check for the nexthop reachability, | |
6302 | * Add nexthop for EVPN RT-5 for nexthop tracking. | |
6303 | * | |
6304 | * Ideally, a BGP route should be marked as valid only if the | |
6305 | * nexthop is reachable. Thus, other EVPN route types also should be | |
6306 | * added here after testing is performed for them. | |
6307 | */ | |
6308 | if (pfx && pfx->family == AF_EVPN && | |
6309 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) | |
6310 | return true; | |
6311 | ||
6312 | return false; | |
6313 | } |