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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(); |
551 | ecommunity_add_val(ecomadd, &eval); | |
b90d4580 CS |
552 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
553 | if (ecommunity_cmp(ecomadd, ecom)) | |
554 | ecom_found = true; | |
555 | ||
556 | if (!ecom_found) | |
557 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 558 | } |
14c1a7bf | 559 | |
560 | /* | |
128ea8ab | 561 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
562 | * creation of a VNI. | |
563 | */ | |
d62a17ae | 564 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 565 | { |
d62a17ae | 566 | bgp_evpn_derive_auto_rd(bgp, vpn); |
567 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
568 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 569 | } |
570 | ||
1ec31309 | 571 | /* |
572 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
573 | */ | |
574 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
575 | { | |
576 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
577 | return; | |
578 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
579 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
580 | } | |
581 | ||
128ea8ab | 582 | /* |
583 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 584 | */ |
d62a17ae | 585 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
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; | |
741 | struct ecommunity ecom_rmac; | |
742 | struct ecommunity_val eval; | |
743 | struct ecommunity_val eval_rmac; | |
744 | bgp_encap_types tnl_type; | |
745 | struct listnode *node, *nnode; | |
746 | struct ecommunity *ecom; | |
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 */ | |
757 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
758 | ||
759 | /* Add the export RTs for L3VNI/VRF */ | |
760 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
761 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
762 | attr->ecommunity = | |
763 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 764 | |
765 | /* add the router mac extended community */ | |
766 | if (!is_zero_mac(&attr->rmac)) { | |
767 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
768 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
769 | ecom_rmac.size = 1; | |
770 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
771 | attr->ecommunity = |
772 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 773 | } |
774 | ||
775 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
776 | } | |
777 | ||
128ea8ab | 778 | /* |
1ec31309 | 779 | * Build extended communities for EVPN route. |
780 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
781 | * and ENCAP extended communities are applicable for all routes. | |
782 | * The default gateway extended community and MAC mobility (sticky) extended | |
783 | * community are added as needed based on passed settings - only for type-2 | |
784 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
785 | * added, if present, based on passed settings - only for non-link-local | |
786 | * type-2 routes. | |
128ea8ab | 787 | */ |
7ec156a9 | 788 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 789 | int add_l3_ecomm) |
128ea8ab | 790 | { |
d62a17ae | 791 | struct ecommunity ecom_encap; |
792 | struct ecommunity ecom_sticky; | |
ead40654 | 793 | struct ecommunity ecom_default_gw; |
bc59a672 | 794 | struct ecommunity ecom_rmac; |
68e33151 | 795 | struct ecommunity ecom_na; |
d62a17ae | 796 | struct ecommunity_val eval; |
797 | struct ecommunity_val eval_sticky; | |
ead40654 | 798 | struct ecommunity_val eval_default_gw; |
bc59a672 | 799 | struct ecommunity_val eval_rmac; |
68e33151 CS |
800 | struct ecommunity_val eval_na; |
801 | ||
d62a17ae | 802 | bgp_encap_types tnl_type; |
803 | struct listnode *node, *nnode; | |
804 | struct ecommunity *ecom; | |
d7c0a89a | 805 | uint32_t seqnum; |
7a3e76f1 | 806 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 807 | |
d62a17ae | 808 | /* Encap */ |
809 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
810 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
811 | encode_encap_extcomm(tnl_type, &eval); | |
812 | ecom_encap.size = 1; | |
d7c0a89a | 813 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 814 | |
d62a17ae | 815 | /* Add Encap */ |
816 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 817 | |
7a3e76f1 | 818 | /* Add the export RTs for L2VNI */ |
d62a17ae | 819 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
820 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 821 | |
1ec31309 | 822 | /* Add the export RTs for L3VNI if told to - caller determines |
823 | * when this should be done. | |
523cafc4 | 824 | */ |
1ec31309 | 825 | if (add_l3_ecomm) { |
7ec156a9 MK |
826 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
827 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
828 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
829 | ecom)) | |
996c9314 LB |
830 | attr->ecommunity = ecommunity_merge( |
831 | attr->ecommunity, ecom); | |
7ec156a9 | 832 | } |
f1f8b53c | 833 | } |
7a3e76f1 | 834 | |
1ec31309 | 835 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 836 | if (attr->sticky) { |
837 | seqnum = 0; | |
838 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
839 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
840 | ecom_sticky.size = 1; | |
d7c0a89a | 841 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 842 | attr->ecommunity = |
843 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
844 | } | |
c85c03c7 | 845 | |
1ec31309 | 846 | /* Add RMAC, if told to. */ |
847 | if (add_l3_ecomm) { | |
bc59a672 MK |
848 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
849 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
850 | ecom_rmac.size = 1; | |
851 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
852 | attr->ecommunity = |
853 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
854 | } |
855 | ||
1ec31309 | 856 | /* Add default gateway, if needed. */ |
ead40654 MK |
857 | if (attr->default_gw) { |
858 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
859 | encode_default_gw_extcomm(&eval_default_gw); | |
860 | ecom_default_gw.size = 1; | |
861 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
862 | attr->ecommunity = |
863 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
864 | } |
865 | ||
68e33151 CS |
866 | if (attr->router_flag) { |
867 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
868 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
869 | ecom_na.size = 1; | |
870 | ecom_na.val = (uint8_t *)eval_na.val; | |
871 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
872 | &ecom_na); | |
873 | } | |
874 | ||
d62a17ae | 875 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 876 | } |
877 | ||
878 | /* | |
879 | * Add MAC mobility extended community to attribute. | |
880 | */ | |
d7c0a89a | 881 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 882 | { |
883 | struct ecommunity ecom_tmp; | |
884 | struct ecommunity_val eval; | |
d7c0a89a | 885 | uint8_t *ecom_val_ptr; |
d62a17ae | 886 | int i; |
d7c0a89a | 887 | uint8_t *pnt; |
d62a17ae | 888 | int type = 0; |
889 | int sub_type = 0; | |
890 | ||
891 | /* Build MM */ | |
892 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
893 | ||
894 | /* Find current MM ecommunity */ | |
421bb26a | 895 | ecom_val_ptr = NULL; |
d62a17ae | 896 | |
897 | if (attr->ecommunity) { | |
898 | for (i = 0; i < attr->ecommunity->size; i++) { | |
899 | pnt = attr->ecommunity->val + (i * 8); | |
900 | type = *pnt++; | |
901 | sub_type = *pnt++; | |
902 | ||
903 | if (type == ECOMMUNITY_ENCODE_EVPN | |
904 | && sub_type | |
905 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
906 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
907 | + (i * 8)); | |
d62a17ae | 908 | break; |
909 | } | |
910 | } | |
911 | } | |
912 | ||
913 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
914 | if (ecom_val_ptr) { |
915 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 916 | } |
917 | /* Add MM to existing */ | |
918 | else { | |
919 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
920 | ecom_tmp.size = 1; | |
d7c0a89a | 921 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 922 | |
f9a78910 DS |
923 | if (attr->ecommunity) |
924 | attr->ecommunity = | |
925 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
926 | else | |
927 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 928 | } |
128ea8ab | 929 | } |
930 | ||
931 | /* Install EVPN route into zebra. */ | |
d62a17ae | 932 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
933 | const struct prefix_evpn *p, |
934 | struct bgp_path_info *pi) | |
128ea8ab | 935 | { |
d62a17ae | 936 | int ret; |
d594a14c | 937 | uint8_t flags; |
b16dd019 | 938 | int flood_control; |
128ea8ab | 939 | |
d594a14c AK |
940 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
941 | flags = 0; | |
942 | if (pi->attr->sticky) | |
943 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
944 | if (pi->attr->default_gw) | |
945 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
946 | if (is_evpn_prefix_ipaddr_v6(p) && | |
947 | pi->attr->router_flag) | |
948 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
949 | ret = bgp_zebra_send_remote_macip( | |
950 | bgp, vpn, p, pi->attr->nexthop, 1, flags, | |
951 | mac_mobility_seqnum(pi->attr)); | |
952 | } else { | |
b16dd019 AK |
953 | switch (pi->attr->pmsi_tnl_type) { |
954 | case PMSI_TNLTYPE_INGR_REPL: | |
955 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
956 | break; | |
957 | ||
958 | case PMSI_TNLTYPE_PIM_SM: | |
959 | flood_control = VXLAN_FLOOD_PIM_SM; | |
960 | break; | |
961 | ||
962 | default: | |
963 | flood_control = VXLAN_FLOOD_DISABLED; | |
964 | break; | |
965 | } | |
966 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 967 | } |
128ea8ab | 968 | |
d62a17ae | 969 | return ret; |
128ea8ab | 970 | } |
971 | ||
972 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 973 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 974 | const struct prefix_evpn *p, |
d62a17ae | 975 | struct in_addr remote_vtep_ip) |
128ea8ab | 976 | { |
d62a17ae | 977 | int ret; |
128ea8ab | 978 | |
d62a17ae | 979 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
980 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
f07e1c99 | 981 | 0, 0, 0); |
d62a17ae | 982 | else |
b16dd019 AK |
983 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
984 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 985 | |
d62a17ae | 986 | return ret; |
128ea8ab | 987 | } |
988 | ||
989 | /* | |
990 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
991 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
992 | * from peers. | |
993 | */ | |
d62a17ae | 994 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
995 | struct bgp_node *rn, | |
4b7e6066 | 996 | struct bgp_path_info *old_local) |
128ea8ab | 997 | { |
d62a17ae | 998 | struct bgp_node *global_rn; |
40381db7 | 999 | struct bgp_path_info *pi; |
d62a17ae | 1000 | afi_t afi = AFI_L2VPN; |
1001 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1002 | |
d62a17ae | 1003 | /* Locate route node in the global EVPN routing table. Note that |
1004 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1005 | * L3VPN routes. | |
1006 | */ | |
1007 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1008 | (struct prefix *)&rn->p, &vpn->prd); | |
1009 | if (global_rn) { | |
1010 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 1011 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
128ea8ab | 1012 | |
d62a17ae | 1013 | /* Schedule for processing - withdraws to peers happen from |
1014 | * this table. | |
1015 | */ | |
40381db7 | 1016 | if (pi) |
d62a17ae | 1017 | bgp_process(bgp, global_rn, afi, safi); |
1018 | bgp_unlock_node(global_rn); | |
1019 | } | |
128ea8ab | 1020 | |
d62a17ae | 1021 | /* Delete route entry in the VNI route table, caller to remove. */ |
18ee8310 | 1022 | bgp_path_info_delete(rn, old_local); |
128ea8ab | 1023 | } |
1024 | ||
50f74cf1 | 1025 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
1026 | { | |
1027 | struct in_addr *ip; | |
1028 | ||
1029 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
50f74cf1 | 1030 | |
1031 | ip->s_addr = vtep.s_addr; | |
1032 | return ip; | |
1033 | } | |
1034 | ||
1035 | static void es_vtep_free(struct in_addr *ip) | |
1036 | { | |
1037 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
1038 | } | |
1039 | ||
1040 | /* check if VTEP is already part of the list */ | |
1041 | static int is_vtep_present_in_list(struct list *list, | |
1042 | struct in_addr vtep) | |
1043 | { | |
1044 | struct listnode *node = NULL; | |
1045 | struct in_addr *tmp; | |
1046 | ||
1047 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
1048 | if (tmp->s_addr == vtep.s_addr) | |
1049 | return 1; | |
1050 | } | |
1051 | return 0; | |
1052 | } | |
1053 | ||
2bb9eff4 DS |
1054 | /* |
1055 | * Best path for ES route was changed, | |
1056 | * update the list of VTEPs for this ES | |
1057 | */ | |
bd494ec5 DS |
1058 | static int evpn_es_install_vtep(struct bgp *bgp, struct evpnes *es, |
1059 | const struct prefix_evpn *p, | |
50f74cf1 | 1060 | struct in_addr rvtep) |
1061 | { | |
1062 | struct in_addr *vtep_ip; | |
1063 | ||
1064 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
1065 | return 0; | |
1066 | ||
1067 | ||
1068 | vtep_ip = es_vtep_new(rvtep); | |
1069 | if (vtep_ip) | |
1070 | listnode_add_sort(es->vtep_list, vtep_ip); | |
1071 | return 0; | |
1072 | } | |
1073 | ||
2bb9eff4 DS |
1074 | /* |
1075 | * Best path for ES route was changed, | |
1076 | * update the list of VTEPs for this ES | |
1077 | */ | |
50f74cf1 | 1078 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
1079 | struct evpnes *es, | |
1080 | struct prefix_evpn *p, | |
1081 | struct in_addr rvtep) | |
1082 | { | |
1083 | struct listnode *node, *nnode, *node_to_del = NULL; | |
1084 | struct in_addr *tmp; | |
1085 | ||
1086 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1087 | if (tmp->s_addr == rvtep.s_addr) { | |
1088 | es_vtep_free(tmp); | |
1089 | node_to_del = node; | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | if (node_to_del) | |
1094 | list_delete_node(es->vtep_list, node_to_del); | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | /* | |
1100 | * Calculate the best path for a ES(type-4) route. | |
1101 | */ | |
1102 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1103 | struct evpnes *es, | |
1104 | struct bgp_node *rn) | |
1105 | { | |
1106 | int ret = 0; | |
1107 | afi_t afi = AFI_L2VPN; | |
1108 | safi_t safi = SAFI_EVPN; | |
4b7e6066 DS |
1109 | struct bgp_path_info *old_select; /* old best */ |
1110 | struct bgp_path_info *new_select; /* new best */ | |
1111 | struct bgp_path_info_pair old_and_new; | |
50f74cf1 | 1112 | |
1113 | /* Compute the best path. */ | |
1114 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1115 | &old_and_new, afi, safi); | |
1116 | old_select = old_and_new.old; | |
1117 | new_select = old_and_new.new; | |
1118 | ||
2bb9eff4 DS |
1119 | /* |
1120 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1121 | * updated |
1122 | */ | |
1123 | if (old_select && old_select == new_select | |
1124 | && old_select->type == ZEBRA_ROUTE_BGP | |
1125 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1126 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1defdda8 | 1127 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1128 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
50f74cf1 | 1129 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1130 | ret = evpn_es_install_vtep(bgp, es, | |
1131 | (struct prefix_evpn *)&rn->p, | |
1132 | old_select->attr->nexthop); | |
1133 | } | |
1defdda8 | 1134 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
50f74cf1 | 1135 | bgp_zebra_clear_route_change_flags(rn); |
1136 | return ret; | |
1137 | } | |
1138 | ||
1139 | /* If the user did a "clear" this flag will be set */ | |
1140 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1141 | ||
2bb9eff4 DS |
1142 | /* |
1143 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1144 | * into the zebra RIB. |
1145 | */ | |
1146 | if (old_select || new_select) | |
1147 | bgp_bump_version(rn); | |
1148 | ||
1149 | if (old_select) | |
18ee8310 | 1150 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
50f74cf1 | 1151 | if (new_select) { |
18ee8310 DS |
1152 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1153 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1154 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_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, | |
bd494ec5 | 1160 | (const struct prefix_evpn *)&rn->p, |
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 DS |
1165 | ret = evpn_es_uninstall_vtep( |
1166 | bgp, es, (struct prefix_evpn *)&rn->p, | |
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 LB |
1210 | ret = evpn_zebra_install( |
1211 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
d594a14c | 1212 | old_select); |
1defdda8 | 1213 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1214 | bgp_zebra_clear_route_change_flags(rn); |
1215 | return ret; | |
1216 | } | |
1217 | ||
1218 | /* If the user did a "clear" this flag will be set */ | |
1219 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1220 | ||
1221 | /* bestpath has changed; update relevant fields and install or uninstall | |
1222 | * into the zebra RIB. | |
1223 | */ | |
1224 | if (old_select || new_select) | |
1225 | bgp_bump_version(rn); | |
1226 | ||
1227 | if (old_select) | |
18ee8310 | 1228 | bgp_path_info_unset_flag(rn, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1229 | if (new_select) { |
18ee8310 DS |
1230 | bgp_path_info_set_flag(rn, new_select, BGP_PATH_SELECTED); |
1231 | bgp_path_info_unset_flag(rn, new_select, BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1232 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
d62a17ae | 1233 | } |
1234 | ||
1235 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1236 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
d62a17ae | 1237 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
d594a14c AK |
1238 | new_select); |
1239 | ||
d62a17ae | 1240 | /* If an old best existed and it was a "local" route, the only |
1241 | * reason | |
1242 | * it would be supplanted is due to MAC mobility procedures. So, | |
1243 | * we | |
1244 | * need to do an implicit delete and withdraw that route from | |
1245 | * peers. | |
1246 | */ | |
1247 | if (old_select && old_select->peer == bgp->peer_self | |
1248 | && old_select->type == ZEBRA_ROUTE_BGP | |
1249 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1250 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1251 | } else { | |
1252 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1253 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1254 | ret = evpn_zebra_uninstall(bgp, vpn, |
1255 | (struct prefix_evpn *)&rn->p, | |
1256 | old_select->attr->nexthop); | |
1257 | } | |
1258 | ||
1259 | /* Clear any route change flags. */ | |
1260 | bgp_zebra_clear_route_change_flags(rn); | |
1261 | ||
18ee8310 | 1262 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1263 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
18ee8310 | 1264 | bgp_path_info_reap(rn, old_select); |
d62a17ae | 1265 | |
1266 | return ret; | |
128ea8ab | 1267 | } |
1268 | ||
ead40654 MK |
1269 | /* |
1270 | * Return true if the local ri for this rn is of type gateway mac | |
1271 | */ | |
1272 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1273 | { | |
40381db7 DS |
1274 | struct bgp_path_info *tmp_pi = NULL; |
1275 | struct bgp_path_info *local_pi = NULL; | |
ead40654 | 1276 | |
40381db7 | 1277 | local_pi = NULL; |
6f94b685 DS |
1278 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1279 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1280 | if (tmp_pi->peer == bgp->peer_self |
1281 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1282 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1283 | local_pi = tmp_pi; | |
ead40654 MK |
1284 | } |
1285 | ||
40381db7 | 1286 | if (!local_pi) |
ead40654 MK |
1287 | return 0; |
1288 | ||
40381db7 | 1289 | return local_pi->attr->default_gw; |
ead40654 MK |
1290 | } |
1291 | ||
c85c03c7 | 1292 | |
1293 | /* | |
1294 | * Return true if the local ri for this rn has sticky set | |
1295 | */ | |
d62a17ae | 1296 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1297 | { |
40381db7 DS |
1298 | struct bgp_path_info *tmp_pi; |
1299 | struct bgp_path_info *local_pi; | |
c85c03c7 | 1300 | |
40381db7 | 1301 | local_pi = NULL; |
6f94b685 DS |
1302 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1303 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1304 | if (tmp_pi->peer == bgp->peer_self |
1305 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1306 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1307 | local_pi = tmp_pi; | |
d62a17ae | 1308 | } |
c85c03c7 | 1309 | |
40381db7 | 1310 | if (!local_pi) |
d62a17ae | 1311 | return 0; |
c85c03c7 | 1312 | |
40381db7 | 1313 | return local_pi->attr->sticky; |
c85c03c7 | 1314 | } |
1315 | ||
50f74cf1 | 1316 | /* |
1317 | * create or update EVPN type4 route entry. | |
1318 | * This could be in the ES table or the global table. | |
1319 | * TODO: handle remote ES (type4) routes as well | |
1320 | */ | |
4b7e6066 | 1321 | static int update_evpn_type4_route_entry(struct bgp *bgp, struct evpnes *es, |
50f74cf1 | 1322 | afi_t afi, safi_t safi, |
4b7e6066 DS |
1323 | struct bgp_node *rn, struct attr *attr, |
1324 | int add, struct bgp_path_info **ri, | |
50f74cf1 | 1325 | int *route_changed) |
1326 | { | |
1327 | char buf[ESI_STR_LEN]; | |
1328 | char buf1[INET6_ADDRSTRLEN]; | |
40381db7 DS |
1329 | struct bgp_path_info *tmp_pi = NULL; |
1330 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
1331 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
50f74cf1 | 1332 | struct attr *attr_new = NULL; |
1333 | struct prefix_evpn *evp = NULL; | |
1334 | ||
1335 | *ri = NULL; | |
1336 | *route_changed = 1; | |
1337 | evp = (struct prefix_evpn *)&rn->p; | |
1338 | ||
1339 | /* locate the local and remote entries if any */ | |
6f94b685 DS |
1340 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1341 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1342 | if (tmp_pi->peer == bgp->peer_self |
1343 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1344 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1345 | local_pi = tmp_pi; | |
1346 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
1347 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED | |
1348 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1349 | remote_pi = tmp_pi; | |
50f74cf1 | 1350 | } |
1351 | ||
6f94b685 | 1352 | /* we don't expect to see a remote_ri at this point. |
50f74cf1 | 1353 | * An ES route has esi + vtep_ip as the key, |
1354 | * We shouldn't see the same route from any other vtep. | |
1355 | */ | |
40381db7 | 1356 | if (remote_pi) { |
af4c2728 | 1357 | flog_err( |
e50f7cfd | 1358 | EC_BGP_ES_INVALID, |
14454c9f DS |
1359 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", |
1360 | bgp->vrf_id, | |
1361 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1362 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1363 | return -1; |
1364 | } | |
1365 | ||
40381db7 | 1366 | if (!local_pi && !add) |
50f74cf1 | 1367 | return 0; |
1368 | ||
1369 | /* create or update the entry */ | |
40381db7 | 1370 | if (!local_pi) { |
50f74cf1 | 1371 | |
1372 | /* Add or update attribute to hash */ | |
1373 | attr_new = bgp_attr_intern(attr); | |
1374 | ||
1375 | /* Create new route with its attribute. */ | |
40381db7 DS |
1376 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
1377 | bgp->peer_self, attr_new, rn); | |
1378 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); | |
50f74cf1 | 1379 | |
1380 | /* add the newly created path to the route-node */ | |
40381db7 | 1381 | bgp_path_info_add(rn, tmp_pi); |
50f74cf1 | 1382 | } else { |
40381db7 DS |
1383 | tmp_pi = local_pi; |
1384 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1385 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
50f74cf1 | 1386 | *route_changed = 0; |
1387 | else { | |
1388 | /* The attribute has changed. | |
1389 | * Add (or update) attribute to hash. */ | |
1390 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1391 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1392 | BGP_PATH_ATTR_CHANGED); |
50f74cf1 | 1393 | |
1394 | /* Restore route, if needed. */ | |
40381db7 DS |
1395 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1396 | bgp_path_info_restore(rn, tmp_pi); | |
50f74cf1 | 1397 | |
1398 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1399 | bgp_attr_unintern(&tmp_pi->attr); |
1400 | tmp_pi->attr = attr_new; | |
1401 | tmp_pi->uptime = bgp_clock(); | |
50f74cf1 | 1402 | } |
1403 | } | |
1404 | ||
1405 | /* Return back the route entry. */ | |
40381db7 | 1406 | *ri = tmp_pi; |
50f74cf1 | 1407 | return 0; |
1408 | } | |
1409 | ||
1410 | /* update evpn es (type-4) route */ | |
1411 | static int update_evpn_type4_route(struct bgp *bgp, | |
1412 | struct evpnes *es, | |
1413 | struct prefix_evpn *p) | |
1414 | { | |
1415 | int ret = 0; | |
1416 | int route_changed = 0; | |
1417 | char buf[ESI_STR_LEN]; | |
1418 | char buf1[INET6_ADDRSTRLEN]; | |
1419 | afi_t afi = AFI_L2VPN; | |
1420 | safi_t safi = SAFI_EVPN; | |
1421 | struct attr attr; | |
1422 | struct attr *attr_new = NULL; | |
1423 | struct bgp_node *rn = NULL; | |
40381db7 | 1424 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 1425 | |
1426 | memset(&attr, 0, sizeof(struct attr)); | |
1427 | ||
1428 | /* Build path-attribute for this route. */ | |
1429 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1430 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1431 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1432 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1433 | ||
1434 | /* Set up extended community. */ | |
1435 | build_evpn_type4_route_extcomm(es, &attr); | |
1436 | ||
1437 | /* First, create (or fetch) route node within the ESI. */ | |
1438 | /* NOTE: There is no RD here. */ | |
1439 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1440 | ||
1441 | /* Create or update route entry. */ | |
40381db7 DS |
1442 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, &attr, 1, |
1443 | &pi, &route_changed); | |
50f74cf1 | 1444 | if (ret != 0) { |
1c50c1c0 QY |
1445 | flog_err(EC_BGP_ES_INVALID, |
1446 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1447 | bgp->vrf_id, | |
1448 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1449 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
50f74cf1 | 1450 | } |
1451 | ||
40381db7 DS |
1452 | assert(pi); |
1453 | attr_new = pi->attr; | |
50f74cf1 | 1454 | |
1455 | /* Perform route selection; | |
1456 | * this is just to set the flags correctly | |
1457 | * as local route in the ES always wins. | |
1458 | */ | |
1459 | evpn_es_route_select_install(bgp, es, rn); | |
1460 | bgp_unlock_node(rn); | |
1461 | ||
1462 | /* If this is a new route or some attribute has changed, export the | |
1463 | * route to the global table. The route will be advertised to peers | |
1464 | * from there. Note that this table is a 2-level tree (RD-level + | |
1465 | * Prefix-level) similar to L3VPN routes. | |
1466 | */ | |
1467 | if (route_changed) { | |
40381db7 | 1468 | struct bgp_path_info *global_pi; |
50f74cf1 | 1469 | |
1470 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1471 | (struct prefix *)p, &es->prd); | |
40381db7 DS |
1472 | update_evpn_type4_route_entry(bgp, es, afi, safi, rn, attr_new, |
1473 | 1, &global_pi, &route_changed); | |
50f74cf1 | 1474 | |
1475 | /* Schedule for processing and unlock node. */ | |
1476 | bgp_process(bgp, rn, afi, safi); | |
1477 | bgp_unlock_node(rn); | |
1478 | } | |
1479 | ||
1480 | /* Unintern temporary. */ | |
1481 | aspath_unintern(&attr.aspath); | |
1482 | return 0; | |
1483 | } | |
1484 | ||
5e53dce3 | 1485 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1486 | struct bgp *bgp_vrf, afi_t afi, |
1487 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1488 | struct attr *attr, int *route_changed) |
342dd0c6 | 1489 | { |
1490 | struct attr *attr_new = NULL; | |
40381db7 | 1491 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1492 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1493 | struct bgp_path_info *local_pi = NULL; |
1494 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1495 | |
5424b7ba | 1496 | *route_changed = 0; |
342dd0c6 | 1497 | /* locate the local route entry if any */ |
6f94b685 DS |
1498 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1499 | tmp_pi = tmp_pi->next) { | |
5e53dce3 | 1500 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1501 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1502 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1503 | local_pi = tmp_pi; | |
342dd0c6 | 1504 | } |
1505 | ||
2bb9eff4 | 1506 | /* |
0437e105 | 1507 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1508 | * Otherwise see if route attr has changed |
523cafc4 | 1509 | */ |
40381db7 | 1510 | if (!local_pi) { |
342dd0c6 | 1511 | |
5424b7ba MK |
1512 | /* route has changed as this is the first entry */ |
1513 | *route_changed = 1; | |
1514 | ||
342dd0c6 | 1515 | /* Add (or update) attribute to hash. */ |
1516 | attr_new = bgp_attr_intern(attr); | |
1517 | ||
1518 | /* create the route info from attribute */ | |
40381db7 | 1519 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
5e53dce3 | 1520 | bgp_evpn->peer_self, attr_new, rn); |
40381db7 | 1521 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1522 | |
b57ba6d2 | 1523 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1524 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1525 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1526 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1527 | pi->extra->num_labels = 1; | |
342dd0c6 | 1528 | |
1529 | /* add the route entry to route node*/ | |
40381db7 | 1530 | bgp_path_info_add(rn, pi); |
342dd0c6 | 1531 | } else { |
1532 | ||
40381db7 DS |
1533 | tmp_pi = local_pi; |
1534 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1535 | |
1536 | /* attribute changed */ | |
1537 | *route_changed = 1; | |
1538 | ||
342dd0c6 | 1539 | /* The attribute has changed. */ |
1540 | /* Add (or update) attribute to hash. */ | |
1541 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1542 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1543 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1544 | |
1545 | /* Restore route, if needed. */ | |
40381db7 DS |
1546 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1547 | bgp_path_info_restore(rn, tmp_pi); | |
342dd0c6 | 1548 | |
1549 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1550 | bgp_attr_unintern(&tmp_pi->attr); |
1551 | tmp_pi->attr = attr_new; | |
1552 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1553 | } |
1554 | } | |
1555 | return 0; | |
1556 | } | |
1557 | ||
1558 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1559 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1560 | struct attr *src_attr) | |
342dd0c6 | 1561 | { |
1562 | afi_t afi = AFI_L2VPN; | |
1563 | safi_t safi = SAFI_EVPN; | |
1564 | struct attr attr; | |
1565 | struct bgp_node *rn = NULL; | |
5e53dce3 | 1566 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1567 | int route_changed = 0; |
342dd0c6 | 1568 | |
5e53dce3 T |
1569 | bgp_evpn = bgp_get_evpn(); |
1570 | if (!bgp_evpn) | |
faafdfa8 | 1571 | return 0; |
342dd0c6 | 1572 | |
2f69f6d3 | 1573 | /* Build path attribute for this route - use the source attr, if |
1574 | * present, else treat as locally originated. | |
1575 | */ | |
1576 | if (src_attr) | |
6f4f49b2 | 1577 | attr = *src_attr; |
2f69f6d3 | 1578 | else { |
1579 | memset(&attr, 0, sizeof(struct attr)); | |
1580 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1581 | } | |
5394a276 | 1582 | |
5394a276 CS |
1583 | /* Advertise Primary IP (PIP) is enabled, send individual |
1584 | * IP (default instance router-id) as nexthop. | |
1585 | * PIP is disabled or vrr interface is not present | |
27727001 | 1586 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1587 | */ |
1588 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1589 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1590 | attr.nexthop = bgp_vrf->originator_ip; | |
1591 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1592 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1593 | } else { |
27727001 CS |
1594 | /* copy sys rmac */ |
1595 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1596 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1597 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1598 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1599 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1600 | if (bgp_debug_zebra(NULL)) { | |
1601 | char buf1[PREFIX_STRLEN]; | |
1602 | ||
1603 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1604 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1605 | prefix2str(evp, buf1, sizeof(buf1))); | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | if (bgp_debug_zebra(NULL)) { | |
1610 | char buf[ETHER_ADDR_STRLEN]; | |
1611 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1612 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1613 | |
1614 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1615 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1616 | prefix2str(evp, buf1, sizeof(buf1)), | |
1617 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1618 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1619 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1620 | } |
1621 | ||
342dd0c6 | 1622 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1623 | |
1624 | /* Setup RT and encap extended community */ | |
1625 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1626 | ||
1627 | /* get the route node in global table */ | |
5e53dce3 | 1628 | rn = bgp_afi_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
996c9314 | 1629 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1630 | assert(rn); |
1631 | ||
1632 | /* create or update the route entry within the route node */ | |
5e53dce3 | 1633 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, rn, &attr, |
996c9314 | 1634 | &route_changed); |
342dd0c6 | 1635 | |
1636 | /* schedule for processing and unlock node */ | |
5424b7ba | 1637 | if (route_changed) { |
5e53dce3 | 1638 | bgp_process(bgp_evpn, rn, afi, safi); |
5424b7ba MK |
1639 | bgp_unlock_node(rn); |
1640 | } | |
342dd0c6 | 1641 | |
1642 | /* uninten temporary */ | |
5ee65f6f | 1643 | if (!src_attr) |
1644 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1645 | return 0; |
1646 | } | |
1647 | ||
128ea8ab | 1648 | /* |
1649 | * Create or update EVPN route entry. This could be in the VNI route table | |
1650 | * or the global route table. | |
1651 | */ | |
d62a17ae | 1652 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1653 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
f07e1c99 | 1654 | struct attr *attr, int add, |
40381db7 | 1655 | struct bgp_path_info **pi, uint8_t flags, |
f07e1c99 | 1656 | uint32_t seq) |
d62a17ae | 1657 | { |
40381db7 DS |
1658 | struct bgp_path_info *tmp_pi; |
1659 | struct bgp_path_info *local_pi; | |
d62a17ae | 1660 | struct attr *attr_new; |
b57ba6d2 | 1661 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1662 | uint32_t num_labels = 1; |
d62a17ae | 1663 | int route_change = 1; |
d7c0a89a | 1664 | uint8_t sticky = 0; |
b57ba6d2 | 1665 | struct prefix_evpn *evp; |
d62a17ae | 1666 | |
40381db7 | 1667 | *pi = NULL; |
b57ba6d2 MK |
1668 | evp = (struct prefix_evpn *)&rn->p; |
1669 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1670 | |
f07e1c99 | 1671 | /* See if this is an update of an existing route, or a new add. */ |
40381db7 | 1672 | local_pi = NULL; |
6f94b685 DS |
1673 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1674 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
1675 | if (tmp_pi->peer == bgp->peer_self |
1676 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1677 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1678 | local_pi = tmp_pi; | |
d62a17ae | 1679 | } |
1680 | ||
1681 | /* If route doesn't exist already, create a new one, if told to. | |
1682 | * Otherwise act based on whether the attributes of the route have | |
1683 | * changed or not. | |
1684 | */ | |
40381db7 | 1685 | if (!local_pi && !add) |
d62a17ae | 1686 | return 0; |
1687 | ||
f07e1c99 | 1688 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1689 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1690 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1691 | |
40381db7 | 1692 | if (!local_pi) { |
d62a17ae | 1693 | /* Add (or update) attribute to hash. */ |
1694 | attr_new = bgp_attr_intern(attr); | |
1695 | ||
1696 | /* Extract MAC mobility sequence number, if any. */ | |
1697 | attr_new->mm_seqnum = | |
1698 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1699 | attr_new->sticky = sticky; | |
1700 | ||
1701 | /* Create new route with its attribute. */ | |
40381db7 | 1702 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
d62a17ae | 1703 | bgp->peer_self, attr_new, rn); |
40381db7 DS |
1704 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1705 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1706 | |
1707 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1708 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1709 | |
1710 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1711 | * Only attach second label if we are advertising two labels for | |
1712 | * type-2 routes. | |
1713 | */ | |
996c9314 LB |
1714 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1715 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1716 | vni_t l3vni; |
1717 | ||
1718 | l3vni = bgpevpn_get_l3vni(vpn); | |
1719 | if (l3vni) { | |
1720 | vni2label(l3vni, &label[1]); | |
1721 | num_labels++; | |
1722 | } | |
1723 | } | |
d62a17ae | 1724 | |
40381db7 DS |
1725 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1726 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1727 | /* Mark route as self type-2 route */ |
1728 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1729 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
40381db7 | 1730 | bgp_path_info_add(rn, tmp_pi); |
d62a17ae | 1731 | } else { |
40381db7 DS |
1732 | tmp_pi = local_pi; |
1733 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1734 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1735 | route_change = 0; |
1736 | else { | |
c48d9f5f MK |
1737 | /* |
1738 | * The attributes have changed, type-2 routes needs to | |
1739 | * be advertised with right labels. | |
1740 | */ | |
1741 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1742 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1743 | && CHECK_FLAG(vpn->flags, | |
1744 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1745 | vni_t l3vni; |
1746 | ||
1747 | l3vni = bgpevpn_get_l3vni(vpn); | |
1748 | if (l3vni) { | |
1749 | vni2label(l3vni, &label[1]); | |
1750 | num_labels++; | |
1751 | } | |
1752 | } | |
40381db7 DS |
1753 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1754 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1755 | |
d62a17ae | 1756 | /* The attribute has changed. */ |
1757 | /* Add (or update) attribute to hash. */ | |
1758 | attr_new = bgp_attr_intern(attr); | |
40381db7 | 1759 | bgp_path_info_set_flag(rn, tmp_pi, |
18ee8310 | 1760 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1761 | |
f07e1c99 | 1762 | /* Extract MAC mobility sequence number, if any. */ |
1763 | attr_new->mm_seqnum = | |
1764 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1765 | attr_new->sticky = sticky; | |
1766 | ||
d62a17ae | 1767 | /* Restore route, if needed. */ |
40381db7 DS |
1768 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
1769 | bgp_path_info_restore(rn, tmp_pi); | |
d62a17ae | 1770 | |
1771 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1772 | bgp_attr_unintern(&tmp_pi->attr); |
1773 | tmp_pi->attr = attr_new; | |
1774 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1775 | } |
1776 | } | |
1777 | ||
1778 | /* Return back the route entry. */ | |
40381db7 | 1779 | *pi = tmp_pi; |
d62a17ae | 1780 | return route_change; |
128ea8ab | 1781 | } |
1782 | ||
ec0ab544 AK |
1783 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
1784 | struct bgpevpn *vpn, struct bgp_node *rn) | |
1785 | { | |
1786 | struct bgp_path_info *tmp_ri; | |
1787 | struct bgp_path_info *curr_select = NULL; | |
1788 | ||
1789 | for (tmp_ri = bgp_node_get_bgp_path_info(rn); | |
1790 | tmp_ri; tmp_ri = tmp_ri->next) { | |
1791 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { | |
1792 | curr_select = tmp_ri; | |
1793 | break; | |
1794 | } | |
1795 | } | |
1796 | ||
1797 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
1798 | && curr_select->sub_type == BGP_ROUTE_IMPORTED) | |
1799 | evpn_zebra_install(bgp, vpn, | |
1800 | (struct prefix_evpn *)&rn->p, | |
1801 | curr_select); | |
1802 | } | |
1803 | ||
6d8c603a AK |
1804 | /* |
1805 | * If the local route was not selected evict it and tell zebra to re-add | |
1806 | * the best remote dest. | |
1807 | * | |
1808 | * Typically a local path added by zebra is expected to be selected as | |
1809 | * best. In which case when a remote path wins as best (later) | |
1810 | * evpn_route_select_install itself evicts the older-local-best path. | |
1811 | * | |
1812 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1813 | * is possible that the local path is no longer the "older" best path. | |
1814 | * It is a path that was never designated as best and hence requires | |
1815 | * additional handling to prevent bgp from injecting and holding on to a | |
1816 | * non-best local path. | |
1817 | */ | |
1818 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1819 | struct bgpevpn *vpn, | |
1820 | struct bgp_node *rn, | |
9a8897aa | 1821 | struct bgp_path_info *local_pi) |
6d8c603a | 1822 | { |
6d8c603a AK |
1823 | char buf[PREFIX_STRLEN]; |
1824 | ||
6d8c603a AK |
1825 | /* local path was not picked as the winner; kick it out */ |
1826 | if (bgp_debug_zebra(NULL)) { | |
1827 | zlog_debug("evicting local evpn prefix %s as remote won", | |
1828 | prefix2str(&rn->p, buf, sizeof(buf))); | |
1829 | } | |
6d8c603a AK |
1830 | evpn_delete_old_local_route(bgp, vpn, rn, local_pi); |
1831 | bgp_path_info_reap(rn, local_pi); | |
1832 | ||
1833 | /* tell zebra to re-add the best remote path */ | |
ec0ab544 | 1834 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); |
6d8c603a AK |
1835 | } |
1836 | ||
128ea8ab | 1837 | /* |
1838 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1839 | * and schedule for processing. | |
1840 | */ | |
d62a17ae | 1841 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1842 | struct prefix_evpn *p, uint8_t flags, |
1843 | uint32_t seq) | |
128ea8ab | 1844 | { |
d62a17ae | 1845 | struct bgp_node *rn; |
1846 | struct attr attr; | |
1847 | struct attr *attr_new; | |
1ec31309 | 1848 | int add_l3_ecomm = 0; |
40381db7 | 1849 | struct bgp_path_info *pi; |
d62a17ae | 1850 | afi_t afi = AFI_L2VPN; |
1851 | safi_t safi = SAFI_EVPN; | |
1852 | int route_change; | |
128ea8ab | 1853 | |
d62a17ae | 1854 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1855 | |
d62a17ae | 1856 | /* Build path-attribute for this route. */ |
1857 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1858 | attr.nexthop = vpn->originator_ip; | |
1859 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1860 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1861 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1862 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1863 | attr.router_flag = CHECK_FLAG(flags, |
1864 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1865 | |
1866 | /* PMSI is only needed for type-3 routes */ | |
d03239d0 | 1867 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1868 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1869 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1870 | } | |
be41eb68 | 1871 | |
1ec31309 | 1872 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1873 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1874 | uint8_t af_flags = 0; | |
1875 | ||
1876 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1877 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1878 | ||
1879 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
1880 | ||
1881 | if (bgp_debug_zebra(NULL)) { | |
1882 | char buf[ETHER_ADDR_STRLEN]; | |
1883 | char buf1[PREFIX_STRLEN]; | |
1884 | ||
1885 | zlog_debug("VRF %s vni %u type-2 route evp %s RMAC %s nexthop %s", | |
1886 | vpn->bgp_vrf ? | |
1887 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1888 | vpn->vni, | |
1889 | prefix2str(p, buf1, sizeof(buf1)), | |
1890 | prefix_mac2str(&attr.rmac, buf, | |
1891 | sizeof(buf)), | |
1892 | inet_ntoa(attr.mp_nexthop_global_in)); | |
1893 | } | |
1894 | } | |
1895 | ||
a21bd7a3 | 1896 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1897 | |
1ec31309 | 1898 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1899 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1900 | * these routes. | |
1901 | */ | |
1902 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1903 | (is_evpn_prefix_ipaddr_v4(p) || |
1904 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1905 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1906 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1907 | add_l3_ecomm = 1; |
1908 | ||
1909 | /* Set up extended community. */ | |
1910 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1911 | |
d62a17ae | 1912 | /* First, create (or fetch) route node within the VNI. */ |
1913 | /* NOTE: There is no RD here. */ | |
1914 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1915 | |
d62a17ae | 1916 | /* Create or update route entry. */ |
1917 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
40381db7 DS |
1918 | 1, &pi, flags, seq); |
1919 | assert(pi); | |
1920 | attr_new = pi->attr; | |
128ea8ab | 1921 | |
6d8c603a AK |
1922 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1923 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1924 | |
1925 | /* Perform route selection. Normally, the local route in the | |
1926 | * VNI is expected to win and be the best route. However, if | |
1927 | * there is a race condition where a host moved from local to | |
1928 | * remote and the remote route was received in BGP just prior | |
1929 | * to the local MACIP notification from zebra, the remote | |
1930 | * route would win, and we should evict the defunct local route | |
1931 | * and (re)install the remote route into zebra. | |
1932 | */ | |
d62a17ae | 1933 | evpn_route_select_install(bgp, vpn, rn); |
6d8c603a | 1934 | /* |
9a8897aa AK |
1935 | * If the new local route was not selected evict it and tell zebra |
1936 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1937 | * routes. | |
6d8c603a | 1938 | */ |
9a8897aa AK |
1939 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
1940 | route_change = 0; | |
1941 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
1942 | } | |
6d8c603a AK |
1943 | bgp_path_info_unlock(pi); |
1944 | ||
d62a17ae | 1945 | bgp_unlock_node(rn); |
128ea8ab | 1946 | |
d62a17ae | 1947 | /* If this is a new route or some attribute has changed, export the |
1948 | * route to the global table. The route will be advertised to peers | |
1949 | * from there. Note that this table is a 2-level tree (RD-level + | |
1950 | * Prefix-level) similar to L3VPN routes. | |
1951 | */ | |
1952 | if (route_change) { | |
40381db7 | 1953 | struct bgp_path_info *global_pi; |
128ea8ab | 1954 | |
d62a17ae | 1955 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1956 | (struct prefix *)p, &vpn->prd); | |
f07e1c99 | 1957 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, |
40381db7 | 1958 | &global_pi, flags, seq); |
128ea8ab | 1959 | |
d62a17ae | 1960 | /* Schedule for processing and unlock node. */ |
1961 | bgp_process(bgp, rn, afi, safi); | |
1962 | bgp_unlock_node(rn); | |
1963 | } | |
128ea8ab | 1964 | |
d62a17ae | 1965 | /* Unintern temporary. */ |
1966 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1967 | |
d62a17ae | 1968 | return 0; |
128ea8ab | 1969 | } |
1970 | ||
50f74cf1 | 1971 | /* |
1972 | * Delete EVPN route entry. | |
1973 | * The entry can be in ESI/VNI table or the global table. | |
1974 | */ | |
4b7e6066 | 1975 | static void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
50f74cf1 | 1976 | struct bgp_node *rn, |
40381db7 | 1977 | struct bgp_path_info **pi) |
342dd0c6 | 1978 | { |
40381db7 | 1979 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1980 | |
40381db7 | 1981 | *pi = NULL; |
342dd0c6 | 1982 | |
50f74cf1 | 1983 | /* Now, find matching route. */ |
6f94b685 DS |
1984 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
1985 | tmp_pi = tmp_pi->next) | |
40381db7 DS |
1986 | if (tmp_pi->peer == bgp->peer_self |
1987 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1988 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1989 | break; |
1990 | ||
40381db7 | 1991 | *pi = tmp_pi; |
342dd0c6 | 1992 | |
1993 | /* Mark route for delete. */ | |
40381db7 DS |
1994 | if (tmp_pi) |
1995 | bgp_path_info_delete(rn, tmp_pi); | |
342dd0c6 | 1996 | } |
1997 | ||
50f74cf1 | 1998 | |
1999 | ||
2000 | /* Delete EVPN ES (type-4) route */ | |
2001 | static int delete_evpn_type4_route(struct bgp *bgp, | |
2002 | struct evpnes *es, | |
2003 | struct prefix_evpn *p) | |
2004 | { | |
2005 | afi_t afi = AFI_L2VPN; | |
2006 | safi_t safi = SAFI_EVPN; | |
40381db7 | 2007 | struct bgp_path_info *pi; |
50f74cf1 | 2008 | struct bgp_node *rn = NULL; /* rn in esi table */ |
2009 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
2010 | ||
2011 | /* First, locate the route node within the ESI. | |
2012 | * If it doesn't exist, ther is nothing to do. | |
2013 | * Note: there is no RD here. | |
2014 | */ | |
2015 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 2016 | if (!rn) |
50f74cf1 | 2017 | return 0; |
2018 | ||
2019 | /* Next, locate route node in the global EVPN routing table. | |
2020 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
2021 | */ | |
2022 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2023 | (struct prefix *)p, &es->prd); | |
2024 | if (global_rn) { | |
2025 | ||
2026 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2027 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
50f74cf1 | 2028 | |
2029 | /* Schedule for processing - withdraws to peers happen from | |
2030 | * this table. | |
2031 | */ | |
40381db7 | 2032 | if (pi) |
50f74cf1 | 2033 | bgp_process(bgp, global_rn, afi, safi); |
2034 | bgp_unlock_node(global_rn); | |
2035 | } | |
2036 | ||
2037 | /* | |
2038 | * Delete route entry in the ESI route table. | |
2039 | * This can just be removed. | |
2040 | */ | |
40381db7 DS |
2041 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2042 | if (pi) | |
2043 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2044 | bgp_unlock_node(rn); |
2045 | return 0; | |
2046 | } | |
2047 | ||
342dd0c6 | 2048 | /* Delete EVPN type5 route */ |
996c9314 | 2049 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2050 | { |
2051 | afi_t afi = AFI_L2VPN; | |
2052 | safi_t safi = SAFI_EVPN; | |
2053 | struct bgp_node *rn = NULL; | |
40381db7 | 2054 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2055 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2056 | |
5e53dce3 T |
2057 | bgp_evpn = bgp_get_evpn(); |
2058 | if (!bgp_evpn) | |
faafdfa8 | 2059 | return 0; |
342dd0c6 | 2060 | |
2061 | /* locate the global route entry for this type-5 prefix */ | |
5e53dce3 | 2062 | rn = bgp_afi_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
342dd0c6 | 2063 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
2064 | if (!rn) | |
2065 | return 0; | |
2066 | ||
5e53dce3 | 2067 | delete_evpn_route_entry(bgp_evpn, afi, safi, rn, &pi); |
40381db7 | 2068 | if (pi) |
5e53dce3 | 2069 | bgp_process(bgp_evpn, rn, afi, safi); |
342dd0c6 | 2070 | bgp_unlock_node(rn); |
2071 | return 0; | |
2072 | } | |
2073 | ||
128ea8ab | 2074 | /* |
2075 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2076 | * schedule for processing. | |
2077 | */ | |
d62a17ae | 2078 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2079 | struct prefix_evpn *p) | |
2080 | { | |
2081 | struct bgp_node *rn, *global_rn; | |
40381db7 | 2082 | struct bgp_path_info *pi; |
d62a17ae | 2083 | afi_t afi = AFI_L2VPN; |
2084 | safi_t safi = SAFI_EVPN; | |
2085 | ||
2086 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2087 | * there | |
2088 | * is nothing further to do. | |
2089 | */ | |
2090 | /* NOTE: There is no RD here. */ | |
2091 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2092 | if (!rn) | |
2093 | return 0; | |
2094 | ||
2095 | /* Next, locate route node in the global EVPN routing table. Note that | |
2096 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2097 | * L3VPN routes. | |
2098 | */ | |
2099 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
2100 | (struct prefix *)p, &vpn->prd); | |
2101 | if (global_rn) { | |
2102 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 2103 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
d62a17ae | 2104 | |
2105 | /* Schedule for processing - withdraws to peers happen from | |
2106 | * this table. | |
2107 | */ | |
40381db7 | 2108 | if (pi) |
d62a17ae | 2109 | bgp_process(bgp, global_rn, afi, safi); |
2110 | bgp_unlock_node(global_rn); | |
2111 | } | |
2112 | ||
2113 | /* Delete route entry in the VNI route table. This can just be removed. | |
2114 | */ | |
40381db7 | 2115 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
3e3aa88e | 2116 | if (pi) { |
40381db7 | 2117 | bgp_path_info_reap(rn, pi); |
3e3aa88e AK |
2118 | evpn_route_select_install(bgp, vpn, rn); |
2119 | } | |
d62a17ae | 2120 | bgp_unlock_node(rn); |
2121 | ||
2122 | return 0; | |
128ea8ab | 2123 | } |
2124 | ||
2125 | /* | |
2126 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2127 | * be scheduled for advertise to peers. | |
2128 | */ | |
d62a17ae | 2129 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2130 | { | |
2131 | afi_t afi; | |
2132 | safi_t safi; | |
2133 | struct bgp_node *rn; | |
40381db7 | 2134 | struct bgp_path_info *pi, *tmp_pi; |
d62a17ae | 2135 | struct attr attr; |
d62a17ae | 2136 | struct attr *attr_new; |
f07e1c99 | 2137 | uint32_t seq; |
1ec31309 | 2138 | int add_l3_ecomm = 0; |
d62a17ae | 2139 | |
2140 | afi = AFI_L2VPN; | |
2141 | safi = SAFI_EVPN; | |
d62a17ae | 2142 | |
2143 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2144 | * routes updated, update corresponding entry in the global table too. | |
2145 | */ | |
2146 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2147 | rn = bgp_route_next(rn)) { | |
2148 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2149 | struct bgp_node *rd_rn; | |
40381db7 | 2150 | struct bgp_path_info *global_pi; |
d62a17ae | 2151 | |
2152 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2153 | continue; | |
2154 | ||
f07e1c99 | 2155 | /* Identify local route. */ |
6f94b685 DS |
2156 | for (tmp_pi = bgp_node_get_bgp_path_info(rn); tmp_pi; |
2157 | tmp_pi = tmp_pi->next) { | |
40381db7 DS |
2158 | if (tmp_pi->peer == bgp->peer_self |
2159 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2160 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2161 | break; |
7ec156a9 | 2162 | } |
d62a17ae | 2163 | |
40381db7 | 2164 | if (!tmp_pi) |
d62a17ae | 2165 | continue; |
2166 | ||
f07e1c99 | 2167 | /* |
2168 | * Build attribute per local route as the MAC mobility and | |
2169 | * some other values could differ for different routes. The | |
2170 | * attributes will be shared in the hash table. | |
2171 | */ | |
2172 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2173 | attr.nexthop = vpn->originator_ip; | |
2174 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2175 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
0ca10580 CS |
2176 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, |
2177 | tmp_pi->extra->af_flags); | |
f07e1c99 | 2178 | |
2179 | if (evpn_route_is_sticky(bgp, rn)) | |
2180 | attr.sticky = 1; | |
2181 | else if (evpn_route_is_def_gw(bgp, rn)) { | |
2182 | attr.default_gw = 1; | |
2183 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2184 | attr.router_flag = 1; | |
2185 | } | |
2186 | ||
0ca10580 CS |
2187 | if (bgp_debug_zebra(NULL)) { |
2188 | char buf[ETHER_ADDR_STRLEN]; | |
2189 | char buf1[PREFIX_STRLEN]; | |
2190 | ||
2191 | zlog_debug("VRF %s vni %u evp %s RMAC %s nexthop %s", | |
2192 | vpn->bgp_vrf ? | |
2193 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
2194 | vpn->vni, | |
2195 | prefix2str(evp, buf1, sizeof(buf1)), | |
2196 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
2197 | inet_ntoa(attr.mp_nexthop_global_in)); | |
2198 | } | |
2199 | ||
f07e1c99 | 2200 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if |
2201 | * using L3 VNI for type-2 routes also. | |
2202 | */ | |
2203 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
9df2b997 | 2204 | !IN6_IS_ADDR_LINKLOCAL( |
2205 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
f07e1c99 | 2206 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
2207 | bgpevpn_get_l3vni(vpn)) | |
2208 | add_l3_ecomm = 1; | |
2209 | ||
2210 | /* Set up extended community. */ | |
2211 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2212 | ||
40381db7 | 2213 | seq = mac_mobility_seqnum(tmp_pi->attr); |
f07e1c99 | 2214 | |
2215 | /* Update the route entry. */ | |
40381db7 DS |
2216 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, 0, &pi, |
2217 | 0, seq); | |
f07e1c99 | 2218 | |
7ab604ab CS |
2219 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2220 | bgp_path_info_lock(pi); | |
2221 | ||
2222 | /* Perform route selection. Normally, the local route in the | |
2223 | * VNI is expected to win and be the best route. However, | |
2224 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2225 | * that causes best selection to be based on next hop), a | |
2226 | * remote route could win. If the local route is the best, | |
2227 | * ensure it is updated in the global EVPN route table and | |
2228 | * advertised to peers; otherwise, ensure it is evicted and | |
2229 | * (re)install the remote route into zebra. | |
d62a17ae | 2230 | */ |
2231 | evpn_route_select_install(bgp, vpn, rn); | |
7ab604ab CS |
2232 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { |
2233 | evpn_cleanup_local_non_best_route(bgp, vpn, rn, pi); | |
2234 | /* unlock pi */ | |
2235 | bgp_path_info_unlock(pi); | |
2236 | } else { | |
2237 | attr_new = pi->attr; | |
2238 | /* unlock pi */ | |
2239 | bgp_path_info_unlock(pi); | |
2240 | ||
2241 | /* Update route in global routing table. */ | |
2242 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2243 | (struct prefix *)evp, &vpn->prd); | |
2244 | assert(rd_rn); | |
2245 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, | |
2246 | attr_new, 0, &global_pi, 0, | |
2247 | mac_mobility_seqnum(attr_new)); | |
2248 | ||
2249 | /* Schedule for processing and unlock node. */ | |
2250 | bgp_process(bgp, rd_rn, afi, safi); | |
2251 | bgp_unlock_node(rd_rn); | |
2252 | } | |
d62a17ae | 2253 | |
f07e1c99 | 2254 | /* Unintern temporary. */ |
2255 | aspath_unintern(&attr.aspath); | |
2256 | ||
2257 | } | |
d62a17ae | 2258 | |
2259 | return 0; | |
128ea8ab | 2260 | } |
2261 | ||
2262 | /* | |
2263 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2264 | * global routing table. These are also scheduled for withdraw from peers. | |
2265 | */ | |
d62a17ae | 2266 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2267 | { |
d62a17ae | 2268 | afi_t afi; |
2269 | safi_t safi; | |
2270 | struct bgp_node *rdrn, *rn; | |
2271 | struct bgp_table *table; | |
40381db7 | 2272 | struct bgp_path_info *pi; |
128ea8ab | 2273 | |
d62a17ae | 2274 | afi = AFI_L2VPN; |
2275 | safi = SAFI_EVPN; | |
128ea8ab | 2276 | |
d62a17ae | 2277 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
6f94b685 | 2278 | if (rdrn && bgp_node_has_bgp_path_info_data(rdrn)) { |
67009e22 | 2279 | table = bgp_node_get_bgp_table_info(rdrn); |
d62a17ae | 2280 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2281 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2282 | |
d62a17ae | 2283 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2284 | continue; | |
128ea8ab | 2285 | |
40381db7 DS |
2286 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
2287 | if (pi) | |
d62a17ae | 2288 | bgp_process(bgp, rn, afi, safi); |
2289 | } | |
2290 | } | |
128ea8ab | 2291 | |
d62a17ae | 2292 | /* Unlock RD node. */ |
2293 | if (rdrn) | |
2294 | bgp_unlock_node(rdrn); | |
128ea8ab | 2295 | |
d62a17ae | 2296 | return 0; |
128ea8ab | 2297 | } |
2298 | ||
2299 | /* | |
2300 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2301 | * table as well as the per-VNI route table. | |
2302 | */ | |
d62a17ae | 2303 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2304 | { |
d62a17ae | 2305 | afi_t afi; |
2306 | safi_t safi; | |
2307 | struct bgp_node *rn; | |
40381db7 | 2308 | struct bgp_path_info *pi; |
128ea8ab | 2309 | |
d62a17ae | 2310 | afi = AFI_L2VPN; |
2311 | safi = SAFI_EVPN; | |
128ea8ab | 2312 | |
d62a17ae | 2313 | /* First, walk the global route table for this VNI's type-2 local |
2314 | * routes. | |
2315 | * EVPN routes are a 2-level table, first get the RD table. | |
2316 | */ | |
2317 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2318 | |
d62a17ae | 2319 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2320 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2321 | rn = bgp_route_next(rn)) { | |
2322 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2323 | |
d62a17ae | 2324 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2325 | continue; | |
128ea8ab | 2326 | |
40381db7 | 2327 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); |
128ea8ab | 2328 | |
d62a17ae | 2329 | /* Route entry in local table gets deleted immediately. */ |
40381db7 DS |
2330 | if (pi) |
2331 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2332 | } |
128ea8ab | 2333 | |
d62a17ae | 2334 | return 0; |
128ea8ab | 2335 | } |
2336 | ||
50f74cf1 | 2337 | /* |
2338 | * Delete all routes in per ES route-table | |
2339 | */ | |
2340 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2341 | { | |
2342 | struct bgp_node *rn; | |
40381db7 | 2343 | struct bgp_path_info *pi, *nextpi; |
50f74cf1 | 2344 | |
2345 | /* Walk this ES's route table and delete all routes. */ | |
2346 | for (rn = bgp_table_top(es->route_table); rn; | |
2347 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2348 | for (pi = bgp_node_get_bgp_path_info(rn); |
2349 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2350 | bgp_path_info_delete(rn, pi); |
2351 | bgp_path_info_reap(rn, pi); | |
50f74cf1 | 2352 | } |
2353 | } | |
2354 | ||
2355 | return 0; | |
2356 | } | |
2357 | ||
128ea8ab | 2358 | /* |
2359 | * Delete all routes in the per-VNI route table. | |
2360 | */ | |
d62a17ae | 2361 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2362 | { |
d62a17ae | 2363 | struct bgp_node *rn; |
40381db7 | 2364 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2365 | |
d62a17ae | 2366 | /* Walk this VNI's route table and delete all routes. */ |
2367 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2368 | rn = bgp_route_next(rn)) { | |
6f94b685 DS |
2369 | for (pi = bgp_node_get_bgp_path_info(rn); |
2370 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
40381db7 DS |
2371 | bgp_path_info_delete(rn, pi); |
2372 | bgp_path_info_reap(rn, pi); | |
d62a17ae | 2373 | } |
2374 | } | |
128ea8ab | 2375 | |
d62a17ae | 2376 | return 0; |
128ea8ab | 2377 | } |
2378 | ||
833b8a50 AK |
2379 | /* BUM traffic flood mode per-l2-vni */ |
2380 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2381 | struct bgpevpn *vpn) | |
2382 | { | |
2383 | /* if flooding has been globally disabled per-vni mode is | |
2384 | * not relevant | |
2385 | */ | |
2386 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2387 | return VXLAN_FLOOD_DISABLED; | |
2388 | ||
2389 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2390 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2391 | return VXLAN_FLOOD_PIM_SM; | |
2392 | ||
2393 | /* default is ingress replication */ | |
2394 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2395 | } | |
2396 | ||
128ea8ab | 2397 | /* |
2398 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2399 | * export RT getting modified or change to tunnel IP. Note that these | |
2400 | * situations need the route in the per-VNI table as well as the global | |
2401 | * table to be updated (as attributes change). | |
2402 | */ | |
0ca10580 | 2403 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2404 | { |
d62a17ae | 2405 | int ret; |
2406 | struct prefix_evpn p; | |
128ea8ab | 2407 | |
d62a17ae | 2408 | /* Update and advertise the type-3 route (only one) followed by the |
2409 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2410 | * |
2411 | * RT-3 only if doing head-end replication | |
d62a17ae | 2412 | */ |
833b8a50 AK |
2413 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2414 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
2415 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2416 | ret = update_evpn_route(bgp, vpn, &p, 0, 0); | |
2417 | if (ret) | |
2418 | return ret; | |
2419 | } | |
128ea8ab | 2420 | |
d62a17ae | 2421 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2422 | } |
2423 | ||
50f74cf1 | 2424 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2425 | * Also remove all other routes from the per ES table. | |
2426 | * Invoked when ES is deleted. | |
2427 | */ | |
2428 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2429 | { | |
2430 | int ret; | |
2431 | char buf[ESI_STR_LEN]; | |
2432 | struct prefix_evpn p; | |
2433 | ||
2434 | /* Delete and withdraw locally learnt ES route */ | |
2435 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2436 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2437 | if (ret) { | |
e50f7cfd | 2438 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
1c50c1c0 QY |
2439 | "%u failed to delete type-4 route for ESI %s", |
2440 | bgp->vrf_id, esi_to_str(&es->esi, buf, sizeof(buf))); | |
50f74cf1 | 2441 | } |
2442 | ||
2443 | /* Delete all routes from per ES table */ | |
2444 | return delete_all_es_routes(bgp, es); | |
2445 | } | |
2446 | ||
128ea8ab | 2447 | /* |
2448 | * Delete (and withdraw) local routes for specified VNI from the global | |
2449 | * table and per-VNI table. After this, remove all other routes from | |
2450 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2451 | * (advertise-all-vni) being disabled. | |
2452 | */ | |
d62a17ae | 2453 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2454 | { |
d62a17ae | 2455 | int ret; |
2456 | struct prefix_evpn p; | |
128ea8ab | 2457 | |
d62a17ae | 2458 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2459 | * followed by type-3 routes (only one) - for this VNI. | |
2460 | */ | |
2461 | ret = delete_all_type2_routes(bgp, vpn); | |
2462 | if (ret) | |
2463 | return ret; | |
128ea8ab | 2464 | |
d62a17ae | 2465 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2466 | ret = delete_evpn_route(bgp, vpn, &p); | |
2467 | if (ret) | |
2468 | return ret; | |
128ea8ab | 2469 | |
d62a17ae | 2470 | /* Delete all routes from the per-VNI table. */ |
2471 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2472 | } |
2473 | ||
76d07c7a AK |
2474 | /* |
2475 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2476 | * remove the type-3 route if any. A new type-3 route will be generated | |
2477 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2478 | */ | |
2479 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2480 | struct in_addr mcast_grp) | |
2481 | { | |
2482 | struct prefix_evpn p; | |
2483 | ||
2484 | vpn->mcast_grp = mcast_grp; | |
2485 | ||
2486 | if (is_vni_live(vpn)) { | |
2487 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2488 | delete_evpn_route(bgp, vpn, &p); | |
2489 | } | |
2490 | ||
2491 | return 0; | |
2492 | } | |
2493 | ||
128ea8ab | 2494 | /* |
d1911c26 | 2495 | * There is a tunnel endpoint IP address change for this VNI, delete |
2496 | * prior type-3 route (if needed) and update. | |
2497 | * Note: Route re-advertisement happens elsewhere after other processing | |
2498 | * other changes. | |
128ea8ab | 2499 | */ |
d62a17ae | 2500 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2501 | struct in_addr originator_ip) | |
128ea8ab | 2502 | { |
d62a17ae | 2503 | struct prefix_evpn p; |
128ea8ab | 2504 | |
ddd16ed5 MK |
2505 | /* If VNI is not live, we only need to update the originator ip */ |
2506 | if (!is_vni_live(vpn)) { | |
2507 | vpn->originator_ip = originator_ip; | |
2508 | return 0; | |
2509 | } | |
2510 | ||
db0e1937 MK |
2511 | /* Update the tunnel-ip hash */ |
2512 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2513 | bgp_tip_add(bgp, &originator_ip); | |
2514 | ||
2515 | /* filter routes as martian nexthop db has changed */ | |
2516 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2517 | ||
d62a17ae | 2518 | /* Need to withdraw type-3 route as the originator IP is part |
2519 | * of the key. | |
2520 | */ | |
2521 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2522 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2523 | |
d62a17ae | 2524 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2525 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2526 | return 0; |
128ea8ab | 2527 | } |
2528 | ||
c011a88b DS |
2529 | static struct bgp_path_info * |
2530 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
4e72ff72 | 2531 | struct bgp_node *rn, struct attr *attr) |
6b742349 DS |
2532 | { |
2533 | struct attr *attr_new; | |
2534 | struct bgp_path_info *pi; | |
2535 | ||
2536 | /* Add (or update) attribute to hash. */ | |
4e72ff72 | 2537 | attr_new = bgp_attr_intern(attr); |
6b742349 DS |
2538 | |
2539 | /* Create new route with its attribute. */ | |
2540 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2541 | attr_new, rn); | |
2542 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2543 | bgp_path_info_extra_get(pi); | |
2544 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2545 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
2546 | if (parent_pi->extra) { | |
2547 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2548 | sizeof(pi->extra->label)); | |
2549 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
2550 | } | |
2551 | bgp_path_info_add(rn, pi); | |
c011a88b DS |
2552 | |
2553 | return pi; | |
6b742349 DS |
2554 | } |
2555 | ||
50f74cf1 | 2556 | /* Install EVPN route entry in ES */ |
4b7e6066 | 2557 | static int install_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
bd494ec5 | 2558 | const struct prefix_evpn *p, |
40381db7 | 2559 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2560 | { |
2561 | int ret = 0; | |
2562 | struct bgp_node *rn = NULL; | |
40381db7 | 2563 | struct bgp_path_info *pi = NULL; |
50f74cf1 | 2564 | struct attr *attr_new = NULL; |
2565 | ||
2566 | /* Create (or fetch) route within the VNI. | |
2567 | * NOTE: There is no RD here. | |
2568 | */ | |
2569 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2570 | ||
2571 | /* Check if route entry is already present. */ | |
6f94b685 | 2572 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2573 | if (pi->extra |
2574 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2575 | break; |
2576 | ||
40381db7 | 2577 | if (!pi) { |
50f74cf1 | 2578 | /* Add (or update) attribute to hash. */ |
40381db7 | 2579 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2580 | |
2581 | /* Create new route with its attribute. */ | |
40381db7 DS |
2582 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, |
2583 | parent_pi->peer, attr_new, rn); | |
2584 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2585 | bgp_path_info_extra_get(pi); | |
f4d7cb0e DS |
2586 | pi->extra->parent = bgp_path_info_lock(parent_pi); |
2587 | bgp_lock_node((struct bgp_node *)parent_pi->net); | |
40381db7 | 2588 | bgp_path_info_add(rn, pi); |
50f74cf1 | 2589 | } else { |
40381db7 DS |
2590 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2591 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
50f74cf1 | 2592 | bgp_unlock_node(rn); |
2593 | return 0; | |
2594 | } | |
2595 | /* The attribute has changed. */ | |
2596 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2597 | attr_new = bgp_attr_intern(parent_pi->attr); |
50f74cf1 | 2598 | |
2599 | /* Restore route, if needed. */ | |
40381db7 DS |
2600 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2601 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2602 | |
2603 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2604 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2605 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2606 | |
2607 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2608 | bgp_attr_unintern(&pi->attr); |
2609 | pi->attr = attr_new; | |
2610 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2611 | } |
2612 | ||
2613 | /* Perform route selection and update zebra, if required. */ | |
2614 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2615 | return ret; | |
2616 | } | |
2617 | ||
d3135ba3 | 2618 | /* |
2619 | * Install route entry into the VRF routing table and invoke route selection. | |
2620 | */ | |
2621 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2622 | const struct prefix_evpn *evp, |
40381db7 | 2623 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2624 | { |
2625 | struct bgp_node *rn; | |
40381db7 | 2626 | struct bgp_path_info *pi; |
1ec31309 | 2627 | struct attr attr; |
d3135ba3 | 2628 | struct attr *attr_new; |
c4edf708 | 2629 | int ret = 0; |
d3135ba3 | 2630 | struct prefix p; |
2631 | struct prefix *pp = &p; | |
2632 | afi_t afi = 0; | |
2633 | safi_t safi = 0; | |
1eb88002 MK |
2634 | char buf[PREFIX_STRLEN]; |
2635 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2636 | |
2637 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2638 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2639 | |
1eb88002 | 2640 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2641 | zlog_debug( |
1ee069db | 2642 | "import evpn prefix %s as ip prefix %s in vrf %s", |
996c9314 LB |
2643 | prefix2str(evp, buf, sizeof(buf)), |
2644 | prefix2str(pp, buf1, sizeof(buf)), | |
2645 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2646 | } |
2647 | ||
d3135ba3 | 2648 | /* Create (or fetch) route within the VRF. */ |
2649 | /* NOTE: There is no RD here. */ | |
3714a385 | 2650 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2651 | afi = AFI_IP; |
2652 | safi = SAFI_UNICAST; | |
2653 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2654 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2655 | afi = AFI_IP6; |
2656 | safi = SAFI_UNICAST; | |
2657 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2658 | } else | |
2659 | return 0; | |
2660 | ||
1ec31309 | 2661 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2662 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2663 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2664 | * address for the rest of the code to flow through. In the case of IPv4, | |
2665 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2666 | */ |
6f4f49b2 | 2667 | attr = *parent_pi->attr; |
1ec31309 | 2668 | if (afi == AFI_IP6) |
2669 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2670 | else |
2671 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2672 | |
d3135ba3 | 2673 | /* Check if route entry is already present. */ |
6f94b685 | 2674 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2675 | if (pi->extra |
2676 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2677 | break; |
2678 | ||
6b742349 | 2679 | if (!pi) |
4e72ff72 | 2680 | pi = bgp_create_evpn_bgp_path_info(parent_pi, rn, &attr); |
6b742349 | 2681 | else { |
40381db7 DS |
2682 | if (attrhash_cmp(pi->attr, &attr) |
2683 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d3135ba3 | 2684 | bgp_unlock_node(rn); |
2685 | return 0; | |
2686 | } | |
2687 | /* The attribute has changed. */ | |
2688 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2689 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2690 | |
2691 | /* Restore route, if needed. */ | |
40381db7 DS |
2692 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2693 | bgp_path_info_restore(rn, pi); | |
d3135ba3 | 2694 | |
2695 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2696 | if ((afi == AFI_IP |
2697 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2698 | || (afi == AFI_IP6 | |
2699 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2700 | &attr_new->mp_nexthop_global))) | |
2701 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2702 | |
a9f8ad9f | 2703 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2704 | /* Unintern existing, set to new. */ |
40381db7 DS |
2705 | bgp_attr_unintern(&pi->attr); |
2706 | pi->attr = attr_new; | |
2707 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2708 | } |
d846e917 PG |
2709 | /* as it is an importation, change nexthop */ |
2710 | bgp_path_info_set_flag(rn, pi, BGP_PATH_ANNC_NH_SELF); | |
d3135ba3 | 2711 | |
40381db7 | 2712 | bgp_aggregate_increment(bgp_vrf, &rn->p, pi, afi, safi); |
b49cdf4c | 2713 | |
d3135ba3 | 2714 | /* Perform route selection and update zebra, if required. */ |
1eb88002 | 2715 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2716 | |
7452e879 | 2717 | /* Process for route leaking. */ |
2718 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2719 | ||
3c11d70a CS |
2720 | bgp_unlock_node(rn); |
2721 | ||
d3135ba3 | 2722 | return ret; |
2723 | } | |
2724 | ||
128ea8ab | 2725 | /* |
2726 | * Install route entry into the VNI routing table and invoke route selection. | |
2727 | */ | |
d62a17ae | 2728 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2729 | const struct prefix_evpn *p, |
40381db7 | 2730 | struct bgp_path_info *parent_pi) |
d62a17ae | 2731 | { |
2732 | struct bgp_node *rn; | |
40381db7 | 2733 | struct bgp_path_info *pi; |
d62a17ae | 2734 | struct attr *attr_new; |
2735 | int ret; | |
2736 | ||
2737 | /* Create (or fetch) route within the VNI. */ | |
2738 | /* NOTE: There is no RD here. */ | |
2739 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2740 | ||
2741 | /* Check if route entry is already present. */ | |
6f94b685 | 2742 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2743 | if (pi->extra |
2744 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2745 | break; |
2746 | ||
bd0254af MS |
2747 | if (!pi) { |
2748 | /* Create an info */ | |
4e72ff72 AD |
2749 | (void)bgp_create_evpn_bgp_path_info(parent_pi, rn, |
2750 | parent_pi->attr); | |
bd0254af | 2751 | } else { |
40381db7 DS |
2752 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2753 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
d62a17ae | 2754 | bgp_unlock_node(rn); |
2755 | return 0; | |
2756 | } | |
2757 | /* The attribute has changed. */ | |
2758 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2759 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2760 | |
50f74cf1 | 2761 | /* Restore route, if needed. */ |
40381db7 DS |
2762 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
2763 | bgp_path_info_restore(rn, pi); | |
50f74cf1 | 2764 | |
2765 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2766 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2767 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2768 | |
2769 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2770 | bgp_attr_unintern(&pi->attr); |
2771 | pi->attr = attr_new; | |
2772 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2773 | } |
2774 | ||
2775 | /* Perform route selection and update zebra, if required. */ | |
2776 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2777 | ||
a97a1e11 CS |
2778 | bgp_unlock_node(rn); |
2779 | ||
50f74cf1 | 2780 | return ret; |
2781 | } | |
2782 | ||
2783 | /* Uninstall EVPN route entry from ES route table */ | |
4b7e6066 | 2784 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, struct evpnes *es, |
bd494ec5 | 2785 | const struct prefix_evpn *p, |
40381db7 | 2786 | struct bgp_path_info *parent_pi) |
50f74cf1 | 2787 | { |
2788 | int ret; | |
2789 | struct bgp_node *rn; | |
40381db7 | 2790 | struct bgp_path_info *pi; |
50f74cf1 | 2791 | |
2792 | if (!es->route_table) | |
2793 | return 0; | |
2794 | ||
2795 | /* Locate route within the ESI. | |
2796 | * NOTE: There is no RD here. | |
2797 | */ | |
2798 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2799 | if (!rn) | |
2800 | return 0; | |
2801 | ||
2802 | /* Find matching route entry. */ | |
6f94b685 | 2803 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2804 | if (pi->extra |
2805 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
50f74cf1 | 2806 | break; |
d62a17ae | 2807 | |
40381db7 | 2808 | if (!pi) |
50f74cf1 | 2809 | return 0; |
d62a17ae | 2810 | |
50f74cf1 | 2811 | /* Mark entry for deletion */ |
40381db7 | 2812 | bgp_path_info_delete(rn, pi); |
d62a17ae | 2813 | |
2814 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2815 | ret = evpn_es_route_select_install(bgp, es, rn); |
2816 | ||
2817 | /* Unlock route node. */ | |
2818 | bgp_unlock_node(rn); | |
d62a17ae | 2819 | |
2820 | return ret; | |
128ea8ab | 2821 | } |
2822 | ||
d3135ba3 | 2823 | /* |
2824 | * Uninstall route entry from the VRF routing table and send message | |
2825 | * to zebra, if appropriate. | |
2826 | */ | |
2827 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2828 | const struct prefix_evpn *evp, |
40381db7 | 2829 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2830 | { |
2831 | struct bgp_node *rn; | |
40381db7 | 2832 | struct bgp_path_info *pi; |
c4edf708 | 2833 | int ret = 0; |
d3135ba3 | 2834 | struct prefix p; |
2835 | struct prefix *pp = &p; | |
2836 | afi_t afi = 0; | |
2837 | safi_t safi = 0; | |
1eb88002 MK |
2838 | char buf[PREFIX_STRLEN]; |
2839 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2840 | |
2841 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2842 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2843 | |
1eb88002 | 2844 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2845 | zlog_debug( |
2846 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2847 | prefix2str(evp, buf, sizeof(buf)), | |
2848 | prefix2str(pp, buf1, sizeof(buf)), | |
2849 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2850 | } |
2851 | ||
d3135ba3 | 2852 | /* Locate route within the VRF. */ |
2853 | /* NOTE: There is no RD here. */ | |
3714a385 | 2854 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2855 | afi = AFI_IP; |
2856 | safi = SAFI_UNICAST; | |
2857 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2858 | } else { | |
2859 | afi = AFI_IP6; | |
2860 | safi = SAFI_UNICAST; | |
2861 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2862 | } | |
2863 | ||
2864 | if (!rn) | |
2865 | return 0; | |
2866 | ||
2867 | /* Find matching route entry. */ | |
6f94b685 | 2868 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2869 | if (pi->extra |
2870 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2871 | break; |
2872 | ||
40381db7 | 2873 | if (!pi) |
d3135ba3 | 2874 | return 0; |
2875 | ||
7452e879 | 2876 | /* Process for route leaking. */ |
2877 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2878 | ||
40381db7 | 2879 | bgp_aggregate_decrement(bgp_vrf, &rn->p, pi, afi, safi); |
4c7a11d5 | 2880 | |
d3135ba3 | 2881 | /* Mark entry for deletion */ |
40381db7 | 2882 | bgp_path_info_delete(rn, pi); |
d3135ba3 | 2883 | |
2884 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2885 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2886 | |
2887 | /* Unlock route node. */ | |
2888 | bgp_unlock_node(rn); | |
2889 | ||
2890 | return ret; | |
2891 | } | |
2892 | ||
128ea8ab | 2893 | /* |
2894 | * Uninstall route entry from the VNI routing table and send message | |
2895 | * to zebra, if appropriate. | |
2896 | */ | |
d62a17ae | 2897 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2898 | const struct prefix_evpn *p, |
40381db7 | 2899 | struct bgp_path_info *parent_pi) |
128ea8ab | 2900 | { |
d62a17ae | 2901 | struct bgp_node *rn; |
40381db7 | 2902 | struct bgp_path_info *pi; |
d62a17ae | 2903 | int ret; |
128ea8ab | 2904 | |
d62a17ae | 2905 | /* Locate route within the VNI. */ |
2906 | /* NOTE: There is no RD here. */ | |
2907 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2908 | if (!rn) | |
2909 | return 0; | |
128ea8ab | 2910 | |
d62a17ae | 2911 | /* Find matching route entry. */ |
6f94b685 | 2912 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
2913 | if (pi->extra |
2914 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2915 | break; |
128ea8ab | 2916 | |
40381db7 | 2917 | if (!pi) |
d62a17ae | 2918 | return 0; |
128ea8ab | 2919 | |
d62a17ae | 2920 | /* Mark entry for deletion */ |
40381db7 | 2921 | bgp_path_info_delete(rn, pi); |
128ea8ab | 2922 | |
d62a17ae | 2923 | /* Perform route selection and update zebra, if required. */ |
2924 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2925 | |
d62a17ae | 2926 | /* Unlock route node. */ |
2927 | bgp_unlock_node(rn); | |
128ea8ab | 2928 | |
d62a17ae | 2929 | return ret; |
128ea8ab | 2930 | } |
2931 | ||
50f74cf1 | 2932 | /* |
2933 | * Given a prefix, see if it belongs to ES. | |
2934 | */ | |
bd494ec5 | 2935 | static int is_prefix_matching_for_es(const struct prefix_evpn *p, |
50f74cf1 | 2936 | struct evpnes *es) |
2937 | { | |
2938 | /* if not an ES route return false */ | |
2939 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2940 | return 0; | |
2941 | ||
2942 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2943 | return 1; | |
2944 | ||
2945 | return 0; | |
2946 | } | |
2947 | ||
5ba238b7 MK |
2948 | /* |
2949 | * Given a route entry and a VRF, see if this route entry should be | |
2950 | * imported into the VRF i.e., RTs match. | |
2951 | */ | |
4b7e6066 | 2952 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2953 | struct bgp_path_info *pi) |
5ba238b7 | 2954 | { |
40381db7 | 2955 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2956 | struct ecommunity *ecom; |
2957 | int i; | |
2958 | ||
2959 | assert(attr); | |
2960 | /* Route should have valid RT to be even considered. */ | |
2961 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2962 | return 0; | |
2963 | ||
2964 | ecom = attr->ecommunity; | |
2965 | if (!ecom || !ecom->size) | |
2966 | return 0; | |
2967 | ||
2968 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2969 | * matches, we're done. | |
2970 | */ | |
2971 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2972 | uint8_t *pnt; |
2973 | uint8_t type, sub_type; | |
5ba238b7 MK |
2974 | struct ecommunity_val *eval; |
2975 | struct ecommunity_val eval_tmp; | |
2976 | struct vrf_irt_node *irt; | |
2977 | ||
2978 | /* Only deal with RTs */ | |
2979 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2980 | eval = (struct ecommunity_val *)(ecom->val | |
2981 | + (i * ECOMMUNITY_SIZE)); | |
2982 | type = *pnt++; | |
2983 | sub_type = *pnt++; | |
2984 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2985 | continue; | |
2986 | ||
2987 | /* See if this RT matches specified VNIs import RTs */ | |
2988 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2989 | if (irt) |
5ba238b7 MK |
2990 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2991 | return 1; | |
2992 | ||
2993 | /* Also check for non-exact match. In this, we mask out the AS | |
2994 | * and | |
2995 | * only check on the local-admin sub-field. This is to | |
2996 | * facilitate using | |
2997 | * VNI as the RT for EBGP peering too. | |
2998 | */ | |
2999 | irt = NULL; | |
3000 | if (type == ECOMMUNITY_ENCODE_AS | |
3001 | || type == ECOMMUNITY_ENCODE_AS4 | |
3002 | || type == ECOMMUNITY_ENCODE_IP) { | |
3003 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3004 | mask_ecom_global_admin(&eval_tmp, eval); | |
3005 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3006 | } | |
5d9cbca2 | 3007 | if (irt) |
5ba238b7 MK |
3008 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3009 | return 1; | |
3010 | } | |
3011 | ||
3012 | return 0; | |
3013 | } | |
3014 | ||
128ea8ab | 3015 | /* |
3016 | * Given a route entry and a VNI, see if this route entry should be | |
3017 | * imported into the VNI i.e., RTs match. | |
3018 | */ | |
d62a17ae | 3019 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3020 | struct bgp_path_info *pi) |
d62a17ae | 3021 | { |
40381db7 | 3022 | struct attr *attr = pi->attr; |
d62a17ae | 3023 | struct ecommunity *ecom; |
3024 | int i; | |
3025 | ||
3026 | assert(attr); | |
3027 | /* Route should have valid RT to be even considered. */ | |
3028 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3029 | return 0; | |
3030 | ||
3031 | ecom = attr->ecommunity; | |
3032 | if (!ecom || !ecom->size) | |
3033 | return 0; | |
3034 | ||
3035 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3036 | * matches, we're done. | |
3037 | */ | |
3038 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3039 | uint8_t *pnt; |
3040 | uint8_t type, sub_type; | |
d62a17ae | 3041 | struct ecommunity_val *eval; |
3042 | struct ecommunity_val eval_tmp; | |
3043 | struct irt_node *irt; | |
3044 | ||
3045 | /* Only deal with RTs */ | |
3046 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3047 | eval = (struct ecommunity_val *)(ecom->val | |
3048 | + (i * ECOMMUNITY_SIZE)); | |
3049 | type = *pnt++; | |
3050 | sub_type = *pnt++; | |
3051 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3052 | continue; | |
3053 | ||
3054 | /* See if this RT matches specified VNIs import RTs */ | |
3055 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3056 | if (irt) |
d62a17ae | 3057 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3058 | return 1; | |
3059 | ||
3060 | /* Also check for non-exact match. In this, we mask out the AS | |
3061 | * and | |
3062 | * only check on the local-admin sub-field. This is to | |
3063 | * facilitate using | |
3064 | * VNI as the RT for EBGP peering too. | |
3065 | */ | |
3066 | irt = NULL; | |
3067 | if (type == ECOMMUNITY_ENCODE_AS | |
3068 | || type == ECOMMUNITY_ENCODE_AS4 | |
3069 | || type == ECOMMUNITY_ENCODE_IP) { | |
3070 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3071 | mask_ecom_global_admin(&eval_tmp, eval); | |
3072 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3073 | } | |
b1ab0dfe | 3074 | if (irt) |
d62a17ae | 3075 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3076 | return 1; | |
3077 | } | |
3078 | ||
3079 | return 0; | |
128ea8ab | 3080 | } |
3081 | ||
50f74cf1 | 3082 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
3083 | struct evpnes *es, | |
3084 | int install) | |
3085 | { | |
3086 | int ret; | |
3087 | afi_t afi; | |
3088 | safi_t safi; | |
3089 | char buf[PREFIX_STRLEN]; | |
3090 | char buf1[ESI_STR_LEN]; | |
3091 | struct bgp_node *rd_rn, *rn; | |
3092 | struct bgp_table *table; | |
40381db7 | 3093 | struct bgp_path_info *pi; |
50f74cf1 | 3094 | |
3095 | afi = AFI_L2VPN; | |
3096 | safi = SAFI_EVPN; | |
3097 | ||
2bb9eff4 DS |
3098 | /* |
3099 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 3100 | * imported into this VRF. Note that we need to loop through all global |
3101 | * routes to determine which route matches the import rt on vrf | |
3102 | */ | |
3103 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3104 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3105 | table = bgp_node_get_bgp_table_info(rd_rn); |
50f74cf1 | 3106 | if (!table) |
3107 | continue; | |
3108 | ||
3109 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3110 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3111 | ||
6f94b685 DS |
3112 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3113 | pi = pi->next) { | |
2bb9eff4 DS |
3114 | /* |
3115 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 3116 | * this ES. |
3117 | */ | |
40381db7 DS |
3118 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3119 | && pi->type == ZEBRA_ROUTE_BGP | |
3120 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
50f74cf1 | 3121 | continue; |
3122 | ||
2bb9eff4 DS |
3123 | if (!is_prefix_matching_for_es(evp, es)) |
3124 | continue; | |
50f74cf1 | 3125 | |
2bb9eff4 DS |
3126 | if (install) |
3127 | ret = install_evpn_route_entry_in_es( | |
40381db7 | 3128 | bgp, es, evp, pi); |
2bb9eff4 DS |
3129 | else |
3130 | ret = uninstall_evpn_route_entry_in_es( | |
40381db7 | 3131 | bgp, es, evp, pi); |
2bb9eff4 DS |
3132 | |
3133 | if (ret) { | |
af4c2728 | 3134 | flog_err( |
e50f7cfd | 3135 | EC_BGP_EVPN_FAIL, |
2bb9eff4 DS |
3136 | "Failed to %s EVPN %s route in ESI %s", |
3137 | install ? "install" | |
3138 | : "uninstall", | |
3139 | prefix2str(evp, buf, | |
3140 | sizeof(buf)), | |
3141 | esi_to_str(&es->esi, buf1, | |
3142 | sizeof(buf1))); | |
3143 | return ret; | |
50f74cf1 | 3144 | } |
3145 | } | |
3146 | } | |
3147 | } | |
3148 | return 0; | |
3149 | } | |
3150 | ||
47bf0432 CS |
3151 | /* This API will scan evpn routes for checking attribute's rmac |
3152 | * macthes with bgp instance router mac. It avoid installing | |
3153 | * route into bgp vrf table and remote rmac in bridge table. | |
3154 | */ | |
3155 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3156 | const struct prefix_evpn *evp, |
47bf0432 CS |
3157 | struct bgp_path_info *pi) |
3158 | { | |
3159 | /* evpn route could have learnt prior to L3vni has come up, | |
3160 | * perform rmac check before installing route and | |
3161 | * remote router mac. | |
3162 | * The route will be removed from global bgp table once | |
3163 | * SVI comes up with MAC and stored in hash, triggers | |
3164 | * bgp_mac_rescan_all_evpn_tables. | |
3165 | */ | |
05864da7 | 3166 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
3167 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
3168 | char buf1[PREFIX_STRLEN]; | |
3169 | char attr_str[BUFSIZ] = {0}; | |
3170 | ||
3171 | bgp_dump_attr(pi->attr, attr_str, BUFSIZ); | |
3172 | ||
3173 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
3174 | __func__, bgp_vrf->vrf_id, | |
3175 | prefix2str(evp, buf1, sizeof(buf1)), | |
3176 | attr_str); | |
3177 | } | |
3178 | ||
3179 | return 1; | |
3180 | } | |
3181 | ||
3182 | return 0; | |
3183 | } | |
3184 | ||
5ba238b7 MK |
3185 | /* |
3186 | * Install or uninstall mac-ip routes are appropriate for this | |
3187 | * particular VRF. | |
3188 | */ | |
996c9314 | 3189 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3190 | { |
3191 | afi_t afi; | |
3192 | safi_t safi; | |
3193 | struct bgp_node *rd_rn, *rn; | |
3194 | struct bgp_table *table; | |
40381db7 | 3195 | struct bgp_path_info *pi; |
5ba238b7 MK |
3196 | int ret; |
3197 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 3198 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3199 | |
3200 | afi = AFI_L2VPN; | |
3201 | safi = SAFI_EVPN; | |
5e53dce3 T |
3202 | bgp_evpn = bgp_get_evpn(); |
3203 | if (!bgp_evpn) | |
5ba238b7 MK |
3204 | return -1; |
3205 | ||
3206 | /* Walk entire global routing table and evaluate routes which could be | |
3207 | * imported into this VRF. Note that we need to loop through all global | |
3208 | * routes to determine which route matches the import rt on vrf | |
3209 | */ | |
5e53dce3 | 3210 | for (rd_rn = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_rn; |
5ba238b7 | 3211 | rd_rn = bgp_route_next(rd_rn)) { |
67009e22 | 3212 | table = bgp_node_get_bgp_table_info(rd_rn); |
5ba238b7 MK |
3213 | if (!table) |
3214 | continue; | |
3215 | ||
3216 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3217 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3218 | ||
1eb88002 | 3219 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3220 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3221 | || evp->prefix.route_type | |
3222 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3223 | continue; |
3224 | ||
1eb88002 | 3225 | /* if not a mac+ip route skip this route */ |
3714a385 | 3226 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3227 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3228 | continue; |
3229 | ||
6f94b685 DS |
3230 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3231 | pi = pi->next) { | |
5ba238b7 | 3232 | /* Consider "valid" remote routes applicable for |
523cafc4 | 3233 | * this VRF. |
3234 | */ | |
40381db7 DS |
3235 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3236 | && pi->type == ZEBRA_ROUTE_BGP | |
3237 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
3238 | continue; |
3239 | ||
40381db7 | 3240 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
3241 | if (bgp_evpn_route_rmac_self_check( |
3242 | bgp_vrf, evp, pi)) | |
3243 | continue; | |
3244 | ||
5ba238b7 | 3245 | if (install) |
996c9314 | 3246 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 3247 | bgp_vrf, evp, pi); |
5ba238b7 | 3248 | else |
996c9314 | 3249 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 3250 | bgp_vrf, evp, pi); |
5ba238b7 MK |
3251 | |
3252 | if (ret) { | |
af4c2728 | 3253 | flog_err( |
e50f7cfd | 3254 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
3255 | "Failed to %s EVPN %s route in VRF %s", |
3256 | install ? "install" | |
3257 | : "uninstall", | |
3258 | prefix2str(evp, buf, | |
3259 | sizeof(buf)), | |
996c9314 LB |
3260 | vrf_id_to_name( |
3261 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
3262 | return ret; |
3263 | } | |
3264 | } | |
3265 | } | |
3266 | } | |
3267 | } | |
3268 | ||
3269 | return 0; | |
3270 | } | |
3271 | ||
128ea8ab | 3272 | /* |
3273 | * Install or uninstall routes of specified type that are appropriate for this | |
3274 | * particular VNI. | |
3275 | */ | |
d62a17ae | 3276 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3277 | struct bgpevpn *vpn, | |
3278 | bgp_evpn_route_type rtype, | |
3279 | int install) | |
3280 | { | |
0291c246 MK |
3281 | afi_t afi; |
3282 | safi_t safi; | |
3283 | struct bgp_node *rd_rn, *rn; | |
3284 | struct bgp_table *table; | |
40381db7 | 3285 | struct bgp_path_info *pi; |
0291c246 | 3286 | int ret; |
d62a17ae | 3287 | |
3288 | afi = AFI_L2VPN; | |
3289 | safi = SAFI_EVPN; | |
3290 | ||
3291 | /* Walk entire global routing table and evaluate routes which could be | |
3292 | * imported into this VPN. Note that we cannot just look at the routes | |
3293 | * for | |
3294 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3295 | * RD. | |
3296 | */ | |
3297 | /* EVPN routes are a 2-level table. */ | |
3298 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3299 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 3300 | table = bgp_node_get_bgp_table_info(rd_rn); |
d62a17ae | 3301 | if (!table) |
3302 | continue; | |
3303 | ||
3304 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3305 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3306 | ||
3307 | if (evp->prefix.route_type != rtype) | |
3308 | continue; | |
3309 | ||
6f94b685 DS |
3310 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
3311 | pi = pi->next) { | |
d62a17ae | 3312 | /* Consider "valid" remote routes applicable for |
3313 | * this VNI. */ | |
40381db7 DS |
3314 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3315 | && pi->type == ZEBRA_ROUTE_BGP | |
3316 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3317 | continue; |
3318 | ||
40381db7 | 3319 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3320 | if (install) |
3321 | ret = install_evpn_route_entry( | |
40381db7 | 3322 | bgp, vpn, evp, pi); |
d62a17ae | 3323 | else |
3324 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3325 | bgp, vpn, evp, pi); |
d62a17ae | 3326 | |
3327 | if (ret) { | |
af4c2728 | 3328 | flog_err( |
e50f7cfd | 3329 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3330 | "%u: Failed to %s EVPN %s route in VNI %u", |
3331 | bgp->vrf_id, | |
3332 | install ? "install" | |
3333 | : "uninstall", | |
3334 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3335 | ? "MACIP" | |
3336 | : "IMET", | |
3337 | vpn->vni); | |
3338 | return ret; | |
3339 | } | |
3340 | } | |
3341 | } | |
3342 | } | |
3343 | } | |
3344 | ||
3345 | return 0; | |
128ea8ab | 3346 | } |
3347 | ||
50f74cf1 | 3348 | /* Install any existing remote ES routes applicable for this ES into its routing |
3349 | * table. This is invoked when ES comes up. | |
3350 | */ | |
3351 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3352 | { | |
3353 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3354 | } | |
3355 | ||
3356 | ||
5ba238b7 | 3357 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3358 | * is invoked upon l3vni-add or l3vni import rt change |
3359 | */ | |
5ba238b7 MK |
3360 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3361 | { | |
3362 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3363 | return 0; | |
3364 | } | |
3365 | ||
128ea8ab | 3366 | /* |
3367 | * Install any existing remote routes applicable for this VNI into its | |
3368 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3369 | * RT is changed. | |
3370 | */ | |
d62a17ae | 3371 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3372 | { |
d62a17ae | 3373 | int ret; |
128ea8ab | 3374 | |
d62a17ae | 3375 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3376 | * for this VNI. | |
3377 | */ | |
3378 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3379 | 1); | |
3380 | if (ret) | |
3381 | return ret; | |
128ea8ab | 3382 | |
d62a17ae | 3383 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3384 | 1); | |
128ea8ab | 3385 | } |
3386 | ||
5ba238b7 MK |
3387 | /* uninstall routes from l3vni vrf. */ |
3388 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3389 | { | |
3390 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3391 | return 0; | |
3392 | } | |
3393 | ||
90e60aa7 | 3394 | /* |
3395 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3396 | * this is invoked is upon an import RT change. | |
3397 | */ | |
d62a17ae | 3398 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3399 | { |
d62a17ae | 3400 | int ret; |
90e60aa7 | 3401 | |
d62a17ae | 3402 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3403 | * applicable | |
3404 | * for this VNI. | |
3405 | */ | |
3406 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3407 | 0); | |
3408 | if (ret) | |
3409 | return ret; | |
90e60aa7 | 3410 | |
d62a17ae | 3411 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3412 | 0); | |
90e60aa7 | 3413 | } |
3414 | ||
50f74cf1 | 3415 | /* Install or unistall route in ES */ |
3416 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3417 | afi_t afi, safi_t safi, | |
3418 | struct prefix_evpn *evp, | |
40381db7 | 3419 | struct bgp_path_info *pi, int install) |
50f74cf1 | 3420 | { |
3421 | int ret = 0; | |
3422 | char buf[ESI_STR_LEN]; | |
3423 | ||
3424 | if (install) | |
40381db7 | 3425 | ret = install_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3426 | else |
40381db7 | 3427 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, pi); |
50f74cf1 | 3428 | |
3429 | if (ret) { | |
af4c2728 | 3430 | flog_err( |
e50f7cfd | 3431 | EC_BGP_EVPN_FAIL, |
14454c9f DS |
3432 | "%u: Failed to %s EVPN %s route in ESI %s", bgp->vrf_id, |
3433 | install ? "install" : "uninstall", "ES", | |
3434 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf))); | |
50f74cf1 | 3435 | return ret; |
3436 | } | |
3437 | return 0; | |
3438 | } | |
3439 | ||
d3135ba3 | 3440 | /* |
3441 | * Install or uninstall route in matching VRFs (list). | |
3442 | */ | |
3443 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3444 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3445 | struct bgp_path_info *pi, |
d3135ba3 | 3446 | struct list *vrfs, int install) |
3447 | { | |
3448 | char buf[PREFIX2STR_BUFFER]; | |
3449 | struct bgp *bgp_vrf; | |
3450 | struct listnode *node, *nnode; | |
3451 | ||
90264d64 | 3452 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3453 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3454 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3455 | return 0; |
3456 | ||
90264d64 | 3457 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3458 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3459 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3460 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3461 | return 0; |
3462 | ||
d3135ba3 | 3463 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3464 | int ret; | |
3465 | ||
3466 | if (install) | |
40381db7 | 3467 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3468 | else |
996c9314 | 3469 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3470 | pi); |
d3135ba3 | 3471 | |
3472 | if (ret) { | |
e50f7cfd | 3473 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3474 | "%u: Failed to %s prefix %s in VRF %s", |
3475 | bgp_def->vrf_id, | |
3476 | install ? "install" : "uninstall", | |
3477 | prefix2str(evp, buf, sizeof(buf)), | |
3478 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3479 | return ret; |
3480 | } | |
3481 | } | |
3482 | ||
3483 | return 0; | |
3484 | } | |
3485 | ||
128ea8ab | 3486 | /* |
3487 | * Install or uninstall route in matching VNIs (list). | |
3488 | */ | |
d62a17ae | 3489 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3490 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3491 | struct bgp_path_info *pi, |
d62a17ae | 3492 | struct list *vnis, int install) |
128ea8ab | 3493 | { |
d62a17ae | 3494 | struct bgpevpn *vpn; |
3495 | struct listnode *node, *nnode; | |
128ea8ab | 3496 | |
d62a17ae | 3497 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3498 | int ret; | |
128ea8ab | 3499 | |
d62a17ae | 3500 | if (!is_vni_live(vpn)) |
3501 | continue; | |
128ea8ab | 3502 | |
d62a17ae | 3503 | if (install) |
40381db7 | 3504 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3505 | else |
40381db7 | 3506 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3507 | |
d62a17ae | 3508 | if (ret) { |
1c50c1c0 QY |
3509 | flog_err(EC_BGP_EVPN_FAIL, |
3510 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3511 | bgp->vrf_id, install ? "install" : "uninstall", | |
3512 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3513 | ? "MACIP" | |
3514 | : "IMET", | |
3515 | vpn->vni); | |
d62a17ae | 3516 | return ret; |
3517 | } | |
3518 | } | |
128ea8ab | 3519 | |
d62a17ae | 3520 | return 0; |
128ea8ab | 3521 | } |
3522 | ||
3523 | /* | |
50f74cf1 | 3524 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3525 | */ |
d62a17ae | 3526 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 3527 | const struct prefix *p, |
40381db7 | 3528 | struct bgp_path_info *pi, int import) |
d62a17ae | 3529 | { |
3530 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3531 | struct attr *attr = pi->attr; |
d62a17ae | 3532 | struct ecommunity *ecom; |
3533 | int i; | |
3534 | ||
3535 | assert(attr); | |
3536 | ||
50f74cf1 | 3537 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3538 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3539 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3540 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3541 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3542 | return 0; |
3543 | ||
3544 | /* If we don't have Route Target, nothing much to do. */ | |
3545 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3546 | return 0; | |
3547 | ||
3548 | ecom = attr->ecommunity; | |
3549 | if (!ecom || !ecom->size) | |
3550 | return -1; | |
3551 | ||
50f74cf1 | 3552 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3553 | * attached to the route */ | |
d62a17ae | 3554 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3555 | uint8_t *pnt; |
3556 | uint8_t type, sub_type; | |
d62a17ae | 3557 | struct ecommunity_val *eval; |
3558 | struct ecommunity_val eval_tmp; | |
996c9314 | 3559 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3560 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3561 | struct evpnes *es; |
d62a17ae | 3562 | |
3563 | /* Only deal with RTs */ | |
3564 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3565 | eval = (struct ecommunity_val *)(ecom->val | |
3566 | + (i * ECOMMUNITY_SIZE)); | |
3567 | type = *pnt++; | |
3568 | sub_type = *pnt++; | |
3569 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3570 | continue; | |
3571 | ||
50f74cf1 | 3572 | /* |
3573 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3574 | * IMET route is imported into VNI table. | |
3575 | * prefix routes are imported into VRF table. | |
523cafc4 | 3576 | */ |
50f74cf1 | 3577 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3578 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3579 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3580 | |
50f74cf1 | 3581 | irt = lookup_import_rt(bgp, eval); |
3582 | if (irt) | |
40381db7 DS |
3583 | install_uninstall_route_in_vnis( |
3584 | bgp, afi, safi, evp, pi, irt->vnis, | |
3585 | import); | |
50f74cf1 | 3586 | |
3587 | vrf_irt = lookup_vrf_import_rt(eval); | |
3588 | if (vrf_irt) | |
40381db7 DS |
3589 | install_uninstall_route_in_vrfs( |
3590 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3591 | import); | |
50f74cf1 | 3592 | |
3593 | /* Also check for non-exact match. | |
3594 | * In this, we mask out the AS and | |
3595 | * only check on the local-admin sub-field. | |
3596 | * This is to facilitate using | |
3597 | * VNI as the RT for EBGP peering too. | |
3598 | */ | |
3599 | irt = NULL; | |
3600 | vrf_irt = NULL; | |
3601 | if (type == ECOMMUNITY_ENCODE_AS | |
3602 | || type == ECOMMUNITY_ENCODE_AS4 | |
3603 | || type == ECOMMUNITY_ENCODE_IP) { | |
3604 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3605 | mask_ecom_global_admin(&eval_tmp, eval); | |
3606 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3607 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3608 | } | |
3609 | ||
3610 | if (irt) | |
40381db7 DS |
3611 | install_uninstall_route_in_vnis( |
3612 | bgp, afi, safi, evp, pi, irt->vnis, | |
3613 | import); | |
50f74cf1 | 3614 | if (vrf_irt) |
40381db7 DS |
3615 | install_uninstall_route_in_vrfs( |
3616 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3617 | import); | |
50f74cf1 | 3618 | } |
3619 | ||
3620 | /* es route is imported into the es table */ | |
3621 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3622 | ||
3623 | /* we will match based on the entire esi to avoid | |
3624 | * imoort of an es route for esi2 into esi1 | |
3625 | */ | |
3626 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3627 | if (es && is_es_local(es)) | |
40381db7 DS |
3628 | install_uninstall_route_in_es( |
3629 | bgp, es, afi, safi, evp, pi, import); | |
d62a17ae | 3630 | } |
d62a17ae | 3631 | } |
3632 | ||
3633 | return 0; | |
128ea8ab | 3634 | } |
3635 | ||
2bb9eff4 DS |
3636 | /* |
3637 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3638 | * routes | |
3639 | */ | |
80b140af MK |
3640 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3641 | { | |
5fd9c12b KA |
3642 | /* Delete ipv4 default route and withdraw from peers */ |
3643 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3644 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3645 | SAFI_UNICAST, false); | |
3646 | ||
80b140af | 3647 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3648 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3649 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3650 | |
5fd9c12b KA |
3651 | /* Delete ipv6 default route and withdraw from peers */ |
3652 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3653 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3654 | SAFI_UNICAST, false); | |
3655 | ||
80b140af | 3656 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3657 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3658 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3659 | } |
3660 | ||
2bb9eff4 DS |
3661 | /* |
3662 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3663 | * routes | |
3664 | */ | |
5394a276 | 3665 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3666 | { |
5394a276 CS |
3667 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3668 | ||
3669 | bgp_evpn = bgp_get_evpn(); | |
3670 | if (!bgp_evpn) | |
3671 | return; | |
3672 | ||
80b140af | 3673 | /* update all ipv4 routes */ |
fdf19f06 MK |
3674 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3675 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3676 | |
5fd9c12b KA |
3677 | /* update ipv4 default route and withdraw from peers */ |
3678 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3679 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3680 | SAFI_UNICAST, true); | |
3681 | ||
80b140af | 3682 | /* update all ipv6 routes */ |
fdf19f06 MK |
3683 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3684 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3685 | |
3686 | /* update ipv6 default route and withdraw from peers */ | |
3687 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3688 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3689 | SAFI_UNICAST, true); | |
3690 | ||
80b140af MK |
3691 | } |
3692 | ||
676f83b9 | 3693 | /* |
3694 | * update and advertise local routes for a VRF as type-5 routes. | |
3695 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3696 | * done in the global route table using the routes which already exist in the | |
3697 | * VRF routing table | |
3698 | */ | |
80b140af | 3699 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3700 | { |
80b140af MK |
3701 | /* skip if the RD is configured */ |
3702 | if (is_vrf_rd_configured(bgp_vrf)) | |
3703 | return; | |
3704 | ||
3705 | /* derive the RD for the VRF based on new router-id */ | |
3706 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3707 | ||
3708 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3709 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3710 | } |
3711 | ||
3712 | /* | |
3713 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3714 | * This is invoked upon VRF RD change. The processing is done only from global | |
3715 | * table. | |
3716 | */ | |
80b140af | 3717 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3718 | { |
80b140af MK |
3719 | /* skip if the RD is configured */ |
3720 | if (is_vrf_rd_configured(bgp_vrf)) | |
3721 | return; | |
3722 | ||
3723 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3724 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3725 | } |
3726 | ||
90e60aa7 | 3727 | /* |
3728 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3729 | * change. Note that the processing is done only on the global route table | |
3730 | * using routes that already exist in the per-VNI table. | |
3731 | */ | |
d62a17ae | 3732 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3733 | { | |
3734 | struct prefix_evpn p; | |
3735 | struct bgp_node *rn, *global_rn; | |
40381db7 | 3736 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3737 | struct attr *attr; |
3738 | afi_t afi = AFI_L2VPN; | |
3739 | safi_t safi = SAFI_EVPN; | |
3740 | ||
3741 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3742 | * attributes to create and advertise the type-3 route for this VNI | |
3743 | * in the global table. | |
fd069644 DS |
3744 | * |
3745 | * RT-3 only if doing head-end replication | |
d62a17ae | 3746 | */ |
833b8a50 AK |
3747 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3748 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
3749 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
3750 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3751 | if (!rn) /* unexpected */ | |
3752 | return 0; | |
6f94b685 | 3753 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
fd069644 DS |
3754 | if (pi->peer == bgp->peer_self && |
3755 | pi->type == ZEBRA_ROUTE_BGP | |
3756 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3757 | break; | |
3758 | if (!pi) /* unexpected */ | |
3759 | return 0; | |
3760 | attr = pi->attr; | |
d62a17ae | 3761 | |
fd069644 DS |
3762 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3763 | (struct prefix *)&p, &vpn->prd); | |
3764 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, | |
3765 | 1, &pi, 0, mac_mobility_seqnum(attr)); | |
d62a17ae | 3766 | |
fd069644 DS |
3767 | /* Schedule for processing and unlock node. */ |
3768 | bgp_process(bgp, global_rn, afi, safi); | |
3769 | bgp_unlock_node(global_rn); | |
3770 | } | |
d62a17ae | 3771 | |
3772 | /* Now, walk this VNI's route table and use the route and its attribute | |
3773 | * to create and schedule route in global table. | |
3774 | */ | |
3775 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3776 | rn = bgp_route_next(rn)) { | |
3777 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3778 | ||
3779 | /* Identify MAC-IP local routes. */ | |
3780 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3781 | continue; | |
3782 | ||
6f94b685 | 3783 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) |
40381db7 DS |
3784 | if (pi->peer == bgp->peer_self |
3785 | && pi->type == ZEBRA_ROUTE_BGP | |
3786 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3787 | break; |
40381db7 | 3788 | if (!pi) |
d62a17ae | 3789 | continue; |
3790 | ||
3791 | /* Create route in global routing table using this route entry's | |
3792 | * attribute. | |
3793 | */ | |
40381db7 | 3794 | attr = pi->attr; |
d62a17ae | 3795 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
3796 | (struct prefix *)evp, &vpn->prd); | |
3797 | assert(global_rn); | |
3798 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
40381db7 | 3799 | &global_pi, 0, |
f07e1c99 | 3800 | mac_mobility_seqnum(attr)); |
d62a17ae | 3801 | |
3802 | /* Schedule for processing and unlock node. */ | |
3803 | bgp_process(bgp, global_rn, afi, safi); | |
3804 | bgp_unlock_node(global_rn); | |
3805 | } | |
3806 | ||
3807 | return 0; | |
90e60aa7 | 3808 | } |
3809 | ||
3810 | /* | |
3811 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3812 | * table. Invoked upon router-id change. | |
3813 | */ | |
d62a17ae | 3814 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3815 | { |
d62a17ae | 3816 | int ret; |
3817 | struct prefix_evpn p; | |
3818 | struct bgp_node *global_rn; | |
40381db7 | 3819 | struct bgp_path_info *pi; |
d62a17ae | 3820 | afi_t afi = AFI_L2VPN; |
3821 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3822 | |
d62a17ae | 3823 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3824 | * for this VNI - from the global table. | |
3825 | */ | |
3826 | ret = delete_global_type2_routes(bgp, vpn); | |
3827 | if (ret) | |
3828 | return ret; | |
90e60aa7 | 3829 | |
d62a17ae | 3830 | /* Remove type-3 route for this VNI from global table. */ |
3831 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3832 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3833 | (struct prefix *)&p, &vpn->prd); | |
3834 | if (global_rn) { | |
3835 | /* Delete route entry in the global EVPN table. */ | |
40381db7 | 3836 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &pi); |
90e60aa7 | 3837 | |
d62a17ae | 3838 | /* Schedule for processing - withdraws to peers happen from |
3839 | * this table. | |
3840 | */ | |
40381db7 | 3841 | if (pi) |
d62a17ae | 3842 | bgp_process(bgp, global_rn, afi, safi); |
3843 | bgp_unlock_node(global_rn); | |
3844 | } | |
90e60aa7 | 3845 | |
d62a17ae | 3846 | return 0; |
90e60aa7 | 3847 | } |
3848 | ||
2d48ee25 | 3849 | /* |
3850 | * Handle router-id change. Update and advertise local routes corresponding | |
3851 | * to this VNI from peers. Note that this is invoked after updating the | |
3852 | * router-id. The routes in the per-VNI table are used to create routes in | |
3853 | * the global table and schedule them. | |
3854 | */ | |
e3b78da8 | 3855 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3856 | { |
e3b78da8 | 3857 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3858 | |
d62a17ae | 3859 | /* Skip VNIs with configured RD. */ |
3860 | if (is_rd_configured(vpn)) | |
3861 | return; | |
2d48ee25 | 3862 | |
d62a17ae | 3863 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3864 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3865 | } |
3866 | ||
3867 | /* | |
3868 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3869 | * to this VNI from peers. Note that this is invoked prior to updating | |
3870 | * the router-id and is done only on the global route table, the routes | |
3871 | * are needed in the per-VNI table to re-advertise with new router id. | |
3872 | */ | |
e3b78da8 | 3873 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3874 | { |
e3b78da8 | 3875 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3876 | |
d62a17ae | 3877 | /* Skip VNIs with configured RD. */ |
3878 | if (is_rd_configured(vpn)) | |
3879 | return; | |
2d48ee25 | 3880 | |
d62a17ae | 3881 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3882 | } |
3883 | ||
fd069644 DS |
3884 | /* |
3885 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3886 | * This is invoked upon flooding mode changing to head-end replication. | |
3887 | */ | |
e3b78da8 | 3888 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3889 | { |
e3b78da8 | 3890 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3891 | struct bgp *bgp = data; |
3892 | struct prefix_evpn p; | |
3893 | ||
833b8a50 AK |
3894 | if (!vpn || !is_vni_live(vpn) || |
3895 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3896 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3897 | return; |
3898 | ||
3899 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3900 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) | |
3901 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3902 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3903 | } | |
3904 | ||
3905 | /* | |
3906 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3907 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3908 | */ | |
e3b78da8 | 3909 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3910 | { |
e3b78da8 | 3911 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3912 | struct bgp *bgp = data; |
3913 | struct prefix_evpn p; | |
3914 | ||
3915 | if (!vpn || !is_vni_live(vpn)) | |
3916 | return; | |
3917 | ||
3918 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3919 | delete_evpn_route(bgp, vpn, &p); | |
3920 | } | |
3921 | ||
128ea8ab | 3922 | /* |
3923 | * Process received EVPN type-2 route (advertise or withdraw). | |
3924 | */ | |
d62a17ae | 3925 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3926 | struct attr *attr, uint8_t *pfx, int psize, |
3927 | uint32_t addpath_id) | |
d62a17ae | 3928 | { |
3929 | struct prefix_rd prd; | |
3930 | struct prefix_evpn p; | |
554cd77a | 3931 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3932 | uint8_t ipaddr_len; |
3933 | uint8_t macaddr_len; | |
b57ba6d2 | 3934 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3935 | uint32_t num_labels = 0; |
554cd77a | 3936 | uint32_t eth_tag; |
d62a17ae | 3937 | int ret; |
3938 | ||
3939 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3940 | * additional 3 bytes if there is a second label (VNI): | |
3941 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3942 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3943 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3944 | */ | |
3945 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3946 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3947 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3948 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3949 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3950 | return -1; |
3951 | } | |
3952 | ||
554cd77a VB |
3953 | memset(&evpn, 0, sizeof(evpn)); |
3954 | ||
d62a17ae | 3955 | /* Make prefix_rd */ |
3956 | prd.family = AF_UNSPEC; | |
3957 | prd.prefixlen = 64; | |
3958 | memcpy(&prd.val, pfx, 8); | |
3959 | pfx += 8; | |
3960 | ||
3961 | /* Make EVPN prefix. */ | |
3962 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3963 | p.family = AF_EVPN; |
50f74cf1 | 3964 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3965 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3966 | ||
554cd77a VB |
3967 | /* Copy Ethernet Seg Identifier */ |
3968 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3969 | pfx += ESI_LEN; | |
d62a17ae | 3970 | |
554cd77a VB |
3971 | /* Copy Ethernet Tag */ |
3972 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3973 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3974 | pfx += 4; |
3975 | ||
3976 | /* Get the MAC Addr len */ | |
3977 | macaddr_len = *pfx++; | |
3978 | ||
3979 | /* Get the MAC Addr */ | |
28328ea9 | 3980 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3981 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3982 | pfx += ETH_ALEN; |
d62a17ae | 3983 | } else { |
af4c2728 | 3984 | flog_err( |
e50f7cfd | 3985 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3986 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3987 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3988 | return -1; | |
3989 | } | |
3990 | ||
3991 | ||
3992 | /* Get the IP. */ | |
3993 | ipaddr_len = *pfx++; | |
3994 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3995 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3996 | flog_err( |
e50f7cfd | 3997 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3998 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3999 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4000 | return -1; | |
4001 | } | |
4002 | ||
4003 | if (ipaddr_len) { | |
4004 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4005 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4006 | ? IPADDR_V4 |
4007 | : IPADDR_V6; | |
3714a385 | 4008 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 4009 | } |
4010 | pfx += ipaddr_len; | |
4011 | ||
b57ba6d2 MK |
4012 | /* Get the VNI(s). Stored as bytes here. */ |
4013 | num_labels++; | |
4014 | memset(label, 0, sizeof(label)); | |
4015 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 4016 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
4017 | psize -= (33 + ipaddr_len); |
4018 | /* Do we have a second VNI? */ | |
4019 | if (psize) { | |
4020 | num_labels++; | |
4021 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4022 | /* |
4023 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4024 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
4025 | * the next field | |
6b11bd8d | 4026 | */ |
b57ba6d2 | 4027 | } |
d62a17ae | 4028 | |
4029 | /* Process the route. */ | |
4030 | if (attr) | |
4031 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4032 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4033 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 4034 | else |
4035 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4036 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4037 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 4038 | return ret; |
128ea8ab | 4039 | } |
4040 | ||
4041 | /* | |
4042 | * Process received EVPN type-3 route (advertise or withdraw). | |
4043 | */ | |
d62a17ae | 4044 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4045 | struct attr *attr, uint8_t *pfx, int psize, |
4046 | uint32_t addpath_id) | |
d62a17ae | 4047 | { |
4048 | struct prefix_rd prd; | |
4049 | struct prefix_evpn p; | |
d7c0a89a | 4050 | uint8_t ipaddr_len; |
554cd77a | 4051 | uint32_t eth_tag; |
d62a17ae | 4052 | int ret; |
4053 | ||
4054 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4055 | * IP len (1) and IP (4 or 16). | |
4056 | */ | |
4057 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4058 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4059 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4060 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4061 | return -1; |
4062 | } | |
4063 | ||
7fd077aa | 4064 | /* If PMSI is present, log if it is anything other than IR. |
4065 | * Note: We just simply ignore the values as it is not clear if | |
4066 | * doing anything else is better. | |
4067 | */ | |
4068 | if (attr && | |
4069 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
4070 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
4071 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4072 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
4073 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4074 | peer->bgp->vrf_id, peer->host, | |
4075 | attr->pmsi_tnl_type); | |
7fd077aa | 4076 | } |
4077 | } | |
4078 | ||
d62a17ae | 4079 | /* Make prefix_rd */ |
4080 | prd.family = AF_UNSPEC; | |
4081 | prd.prefixlen = 64; | |
4082 | memcpy(&prd.val, pfx, 8); | |
4083 | pfx += 8; | |
4084 | ||
4085 | /* Make EVPN prefix. */ | |
4086 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4087 | p.family = AF_EVPN; |
50f74cf1 | 4088 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4089 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4090 | ||
554cd77a VB |
4091 | /* Copy Ethernet Tag */ |
4092 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4093 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4094 | pfx += 4; |
4095 | ||
4096 | /* Get the IP. */ | |
4097 | ipaddr_len = *pfx++; | |
4098 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4099 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4100 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4101 | } else { |
af4c2728 | 4102 | flog_err( |
e50f7cfd | 4103 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4104 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4105 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4106 | return -1; | |
4107 | } | |
4108 | ||
4109 | /* Process the route. */ | |
4110 | if (attr) | |
4111 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4112 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4113 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4114 | else |
4115 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4116 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4117 | &prd, NULL, 0, NULL); |
d62a17ae | 4118 | return ret; |
128ea8ab | 4119 | } |
4120 | ||
50f74cf1 | 4121 | /* |
4122 | * Process received EVPN type-4 route (advertise or withdraw). | |
4123 | */ | |
4124 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
4125 | struct attr *attr, uint8_t *pfx, int psize, | |
4126 | uint32_t addpath_id) | |
4127 | { | |
4128 | int ret; | |
4129 | esi_t esi; | |
4130 | uint8_t ipaddr_len; | |
4131 | struct in_addr vtep_ip; | |
4132 | struct prefix_rd prd; | |
4133 | struct prefix_evpn p; | |
4134 | ||
4135 | /* Type-4 route should be either 23 or 35 bytes | |
4136 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
4137 | */ | |
4138 | if (psize != 23 && psize != 35) { | |
e50f7cfd | 4139 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4140 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", |
4141 | peer->bgp->vrf_id, peer->host, psize); | |
50f74cf1 | 4142 | return -1; |
4143 | } | |
4144 | ||
4145 | /* Make prefix_rd */ | |
4146 | prd.family = AF_UNSPEC; | |
4147 | prd.prefixlen = 64; | |
4148 | memcpy(&prd.val, pfx, 8); | |
4149 | pfx += 8; | |
4150 | ||
4151 | /* get the ESI */ | |
4152 | memcpy(&esi, pfx, ESI_BYTES); | |
4153 | pfx += ESI_BYTES; | |
4154 | ||
4155 | ||
4156 | /* Get the IP. */ | |
4157 | ipaddr_len = *pfx++; | |
4158 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
4159 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
4160 | } else { | |
af4c2728 | 4161 | flog_err( |
e50f7cfd | 4162 | EC_BGP_EVPN_ROUTE_INVALID, |
50f74cf1 | 4163 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", |
4164 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4165 | return -1; | |
4166 | } | |
4167 | ||
4168 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
4169 | /* Process the route. */ | |
4170 | if (attr) { | |
4171 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4172 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4173 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 4174 | } else { |
50f74cf1 | 4175 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4176 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
4177 | &prd, NULL, 0, NULL); | |
4178 | } | |
4179 | return ret; | |
4180 | } | |
4181 | ||
4182 | ||
128ea8ab | 4183 | /* |
4184 | * Process received EVPN type-5 route (advertise or withdraw). | |
4185 | */ | |
d62a17ae | 4186 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4187 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4188 | uint32_t addpath_id) |
d62a17ae | 4189 | { |
4190 | struct prefix_rd prd; | |
4191 | struct prefix_evpn p; | |
4192 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4193 | uint8_t ippfx_len; |
4194 | uint32_t eth_tag; | |
b57ba6d2 | 4195 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4196 | int ret; |
c6ec0c74 KA |
4197 | afi_t gw_afi; |
4198 | bool is_valid_update = false; | |
d62a17ae | 4199 | |
4200 | /* Type-5 route should be 34 or 58 bytes: | |
4201 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4202 | * GW (4 or 16) and VNI (3). | |
4203 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4204 | */ | |
4205 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4206 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4207 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4208 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4209 | return -1; |
4210 | } | |
4211 | ||
4212 | /* Make prefix_rd */ | |
4213 | prd.family = AF_UNSPEC; | |
4214 | prd.prefixlen = 64; | |
4215 | memcpy(&prd.val, pfx, 8); | |
4216 | pfx += 8; | |
4217 | ||
4218 | /* Make EVPN prefix. */ | |
4219 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4220 | p.family = AF_EVPN; |
50f74cf1 | 4221 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4222 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4223 | ||
4224 | /* Additional information outside of prefix - ESI and GW IP */ | |
4225 | memset(&evpn, 0, sizeof(evpn)); | |
4226 | ||
4227 | /* Fetch ESI */ | |
4228 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
4229 | pfx += 10; | |
4230 | ||
4231 | /* Fetch Ethernet Tag. */ | |
4232 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4233 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4234 | pfx += 4; |
4235 | ||
4236 | /* Fetch IP prefix length. */ | |
4237 | ippfx_len = *pfx++; | |
4238 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4239 | flog_err( |
e50f7cfd | 4240 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4241 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4242 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4243 | return -1; | |
4244 | } | |
3714a385 | 4245 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4246 | |
4247 | /* Determine IPv4 or IPv6 prefix */ | |
4248 | /* Since the address and GW are from the same family, this just becomes | |
4249 | * a simple check on the total size. | |
4250 | */ | |
4251 | if (psize == 34) { | |
3714a385 | 4252 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4253 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4254 | pfx += 4; |
4255 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4256 | pfx += 4; | |
c6ec0c74 | 4257 | gw_afi = AF_INET; |
d62a17ae | 4258 | } else { |
3714a385 | 4259 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
4260 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 4261 | pfx += 16; |
4262 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
4263 | pfx += 16; | |
c6ec0c74 | 4264 | gw_afi = AF_INET6; |
d62a17ae | 4265 | } |
4266 | ||
b57ba6d2 MK |
4267 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4268 | memset(&label, 0, sizeof(label)); | |
4269 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4270 | |
4271 | /* | |
4272 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4273 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4274 | * field | |
6b11bd8d | 4275 | */ |
d62a17ae | 4276 | |
c6ec0c74 KA |
4277 | if (attr) { |
4278 | is_valid_update = true; | |
4279 | if (is_zero_mac(&attr->rmac) && is_zero_esi(&evpn.eth_s_id) && | |
4280 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) | |
4281 | is_valid_update = false; | |
4282 | ||
4283 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4284 | is_valid_update = false; | |
4285 | } | |
4286 | ||
d62a17ae | 4287 | /* Process the route. */ |
c6ec0c74 | 4288 | if (is_valid_update) |
d62a17ae | 4289 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4290 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4291 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 4292 | else |
4293 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4294 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4295 | &prd, &label, 1, &evpn); |
d62a17ae | 4296 | |
4297 | return ret; | |
4298 | } | |
4299 | ||
5f040085 DS |
4300 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4301 | const struct prefix_rd *prd, | |
4302 | mpls_label_t *label, uint32_t num_labels, | |
4303 | struct attr *attr) | |
d62a17ae | 4304 | { |
4305 | int len; | |
4306 | char temp[16]; | |
5f040085 | 4307 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4308 | |
4309 | memset(&temp, 0, 16); | |
b03b8898 | 4310 | if (p->family != AF_EVPN) |
d62a17ae | 4311 | return; |
4312 | p_evpn_p = &(p->u.prefix_evpn); | |
4313 | ||
e9fc2840 | 4314 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4315 | IP and GW-IP have to be both ipv4 or ipv6 |
4316 | */ | |
3714a385 | 4317 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4318 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4319 | else |
e9fc2840 | 4320 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4321 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4322 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4323 | stream_put(s, prd->val, 8); | |
0af35d90 | 4324 | if (attr) |
d62a17ae | 4325 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
4326 | else | |
4327 | stream_put(s, &temp, 10); | |
3714a385 | 4328 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4329 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4330 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4331 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4332 | else |
3714a385 | 4333 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 4334 | if (attr) { |
3714a385 | 4335 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4336 | stream_put_ipv4(s, |
4337 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
4338 | else | |
4339 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
4340 | } else { | |
3714a385 | 4341 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4342 | stream_put_ipv4(s, 0); |
4343 | else | |
4344 | stream_put(s, &temp, 16); | |
4345 | } | |
4346 | ||
b57ba6d2 | 4347 | if (num_labels) |
d62a17ae | 4348 | stream_put(s, label, 3); |
4349 | else | |
4350 | stream_put3(s, 0); | |
128ea8ab | 4351 | } |
4352 | ||
4353 | /* | |
4354 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4355 | */ | |
e3b78da8 | 4356 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4357 | { |
e3b78da8 | 4358 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4359 | |
d62a17ae | 4360 | /* Remove EVPN routes and schedule for processing. */ |
4361 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4362 | |
d62a17ae | 4363 | /* Clear "live" flag and see if hash needs to be freed. */ |
4364 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4365 | if (!is_vni_configured(vpn)) | |
4366 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4367 | } |
4368 | ||
4369 | /* | |
4370 | * Free a VNI entry; iterator function called during cleanup. | |
4371 | */ | |
e3b78da8 | 4372 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4373 | { |
e3b78da8 | 4374 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4375 | |
d62a17ae | 4376 | delete_all_vni_routes(bgp, vpn); |
4377 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4378 | } |
4379 | ||
c581d8b0 MK |
4380 | /* |
4381 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4382 | */ | |
4383 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4384 | { | |
5e53dce3 | 4385 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4386 | |
c581d8b0 | 4387 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4388 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4389 | ||
4390 | /* Map RT to VRF */ | |
5e53dce3 T |
4391 | bgp_evpn = bgp_get_evpn(); |
4392 | if (!bgp_evpn) | |
10ebe1ab MK |
4393 | return; |
4394 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4395 | } |
4396 | ||
4397 | /* | |
4398 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4399 | */ | |
4400 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4401 | { | |
4402 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4403 | } | |
4404 | ||
4405 | /* | |
4406 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4407 | */ | |
4408 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4409 | { | |
4410 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4411 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4412 | } | |
4413 | ||
4414 | /* | |
4415 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4416 | */ | |
4417 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4418 | { | |
4419 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4420 | } | |
128ea8ab | 4421 | |
f1f8b53c MK |
4422 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4423 | { | |
5e53dce3 | 4424 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4425 | struct listnode *node = NULL; |
4426 | struct bgpevpn *vpn = NULL; | |
4427 | ||
5e53dce3 T |
4428 | bgp_evpn = bgp_get_evpn(); |
4429 | if (!bgp_evpn) | |
f1f8b53c MK |
4430 | return; |
4431 | ||
4992b4ae MK |
4432 | /* update all type-5 routes */ |
4433 | update_advertise_vrf_routes(bgp_vrf); | |
4434 | ||
4435 | /* update all type-2 routes */ | |
f1f8b53c | 4436 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4437 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4438 | } |
4439 | ||
bf1061d8 VB |
4440 | /* |
4441 | * Handle autort change for a given VNI. | |
4442 | */ | |
e3b78da8 | 4443 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4444 | { |
e3b78da8 | 4445 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4446 | |
bf1061d8 VB |
4447 | if (!is_import_rt_configured(vpn)) { |
4448 | if (is_vni_live(vpn)) | |
4449 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4450 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4451 | list_delete_all_node(vpn->import_rtl); |
4452 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4453 | if (is_vni_live(vpn)) | |
4454 | bgp_evpn_install_routes(bgp, vpn); | |
4455 | } | |
4456 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4457 | list_delete_all_node(vpn->export_rtl); |
4458 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4459 | if (is_vni_live(vpn)) | |
4460 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4461 | } | |
4462 | } | |
4463 | ||
128ea8ab | 4464 | /* |
4465 | * Public functions. | |
4466 | */ | |
4467 | ||
5424b7ba | 4468 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4469 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4470 | afi_t afi, safi_t safi) |
4471 | { | |
4472 | int ret = 0; | |
4473 | struct prefix_evpn evp; | |
4474 | char buf[PREFIX_STRLEN]; | |
4475 | ||
31310b25 | 4476 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4477 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4478 | if (ret) { | |
af4c2728 | 4479 | flog_err( |
e50f7cfd | 4480 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4481 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4482 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4483 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4484 | } |
4485 | } | |
4486 | ||
342dd0c6 | 4487 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4488 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4489 | { |
4490 | struct bgp_table *table = NULL; | |
4491 | struct bgp_node *rn = NULL; | |
40381db7 | 4492 | struct bgp_path_info *pi; |
342dd0c6 | 4493 | |
053905d2 | 4494 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4495 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
f106e3a7 | 4496 | /* Only care about "selected" routes. Also ensure that |
4497 | * these are routes that are injectable into EVPN. | |
4498 | */ | |
25f2ca53 | 4499 | /* TODO: Support for AddPath for EVPN. */ |
6f94b685 | 4500 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4501 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4502 | && is_route_injectable_into_evpn(pi)) { |
25f2ca53 | 4503 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4504 | afi, safi); | |
4505 | break; | |
4506 | } | |
4507 | } | |
4508 | } | |
5424b7ba | 4509 | } |
342dd0c6 | 4510 | |
5fd9c12b KA |
4511 | /* |
4512 | * evpn - enable advertisement of default g/w | |
4513 | */ | |
4514 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4515 | safi_t safi, bool add) | |
4516 | { | |
4517 | struct prefix ip_prefix; | |
4518 | ||
4519 | /* form the default prefix 0.0.0.0/0 */ | |
4520 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4521 | ip_prefix.family = afi2family(afi); | |
4522 | ||
4523 | if (add) { | |
4524 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4525 | NULL, afi, safi); | |
4526 | } else { | |
4527 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4528 | afi, safi); | |
4529 | } | |
4530 | } | |
4531 | ||
4532 | ||
2f69f6d3 | 4533 | /* |
4534 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4535 | * to this function correspond to those of the source IP prefix (best | |
4536 | * path in the case of the attr. In the case of a local prefix (when we | |
4537 | * are advertising local subnets), the src_attr will be NULL. | |
4538 | */ | |
bd494ec5 | 4539 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4540 | struct attr *src_attr, afi_t afi, |
4541 | safi_t safi) | |
5424b7ba MK |
4542 | { |
4543 | int ret = 0; | |
4544 | struct prefix_evpn evp; | |
4545 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4546 | |
31310b25 | 4547 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4548 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4549 | if (ret) | |
e50f7cfd | 4550 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4551 | "%u: Failed to create type-5 route for prefix %s", |
4552 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4553 | } |
4554 | ||
2f69f6d3 | 4555 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4556 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4557 | * advertisement is enabled. | |
4558 | */ | |
996c9314 LB |
4559 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4560 | safi_t safi) | |
342dd0c6 | 4561 | { |
4562 | struct bgp_table *table = NULL; | |
4563 | struct bgp_node *rn = NULL; | |
40381db7 | 4564 | struct bgp_path_info *pi; |
342dd0c6 | 4565 | |
053905d2 | 4566 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4567 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4568 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4569 | * attribute. Also, ensure that the route is injectable |
4570 | * into EVPN. | |
2f69f6d3 | 4571 | * TODO: Support for AddPath for EVPN. |
4572 | */ | |
6f94b685 | 4573 | for (pi = bgp_node_get_bgp_path_info(rn); pi; pi = pi->next) { |
40381db7 | 4574 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4575 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4576 | |
4577 | /* apply the route-map */ | |
4578 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4579 | route_map_result_t ret; |
e34291b8 | 4580 | struct bgp_path_info tmp_pi; |
4581 | struct bgp_path_info_extra tmp_pie; | |
4582 | struct attr tmp_attr; | |
4583 | ||
4584 | tmp_attr = *pi->attr; | |
4585 | ||
4586 | /* Fill temp path_info */ | |
4587 | prep_for_rmap_apply( | |
4588 | &tmp_pi, &tmp_pie, rn, pi, | |
4589 | pi->peer, &tmp_attr); | |
4590 | ||
4591 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4592 | |
996c9314 LB |
4593 | ret = route_map_apply( |
4594 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4595 | .map, | |
e34291b8 | 4596 | &rn->p, RMAP_BGP, &tmp_pi); |
4597 | if (ret == RMAP_DENYMATCH) { | |
4598 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4599 | continue; |
e34291b8 | 4600 | } |
4601 | bgp_evpn_advertise_type5_route( | |
4602 | bgp_vrf, &rn->p, &tmp_attr, | |
4603 | afi, safi); | |
4604 | } else | |
4605 | bgp_evpn_advertise_type5_route( | |
4606 | bgp_vrf, &rn->p, pi->attr, | |
4607 | afi, safi); | |
2f69f6d3 | 4608 | break; |
4609 | } | |
4610 | } | |
31310b25 | 4611 | } |
342dd0c6 | 4612 | } |
4613 | ||
996c9314 | 4614 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4615 | { |
4616 | struct listnode *node, *nnode, *node_to_del; | |
4617 | struct ecommunity *ecom, *ecom_auto; | |
4618 | struct ecommunity_val eval; | |
4619 | ||
bf1061d8 VB |
4620 | if (bgp->advertise_autort_rfc8365) |
4621 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4622 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4623 | ||
4624 | ecom_auto = ecommunity_new(); | |
4625 | ecommunity_add_val(ecom_auto, &eval); | |
4626 | node_to_del = NULL; | |
4627 | ||
4628 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4629 | if (ecommunity_match(ecom, ecom_auto)) { | |
4630 | ecommunity_free(&ecom); | |
4631 | node_to_del = node; | |
4632 | } | |
4633 | } | |
4634 | ||
4635 | if (node_to_del) | |
4636 | list_delete_node(rtl, node_to_del); | |
4637 | ||
4638 | ecommunity_free(&ecom_auto); | |
4639 | } | |
4640 | ||
4641 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4642 | struct ecommunity *ecomadd) |
c581d8b0 | 4643 | { |
5ba238b7 | 4644 | /* uninstall routes from vrf */ |
3d0b43d7 | 4645 | if (is_l3vni_live(bgp_vrf)) |
4646 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4647 | |
4648 | /* Cleanup the RT to VRF mapping */ | |
4649 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4650 | ||
c581d8b0 MK |
4651 | /* Remove auto generated RT */ |
4652 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4653 | ||
4654 | /* Add the newly configured RT to RT list */ | |
4655 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4656 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4657 | ||
3d0b43d7 | 4658 | /* map VRF to its RTs and install routes matching the new RTs */ |
4659 | if (is_l3vni_live(bgp_vrf)) { | |
4660 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4661 | install_routes_for_vrf(bgp_vrf); | |
4662 | } | |
c581d8b0 MK |
4663 | } |
4664 | ||
4665 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4666 | struct ecommunity *ecomdel) | |
4667 | { | |
4668 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4669 | struct ecommunity *ecom = NULL; | |
4670 | ||
5ba238b7 | 4671 | /* uninstall routes from vrf */ |
3d0b43d7 | 4672 | if (is_l3vni_live(bgp_vrf)) |
4673 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4674 | |
4675 | /* Cleanup the RT to VRF mapping */ | |
4676 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4677 | ||
c581d8b0 MK |
4678 | /* remove the RT from the RT list */ |
4679 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4680 | if (ecommunity_match(ecom, ecomdel)) { | |
4681 | ecommunity_free(&ecom); | |
4682 | node_to_del = node; | |
4683 | break; | |
4684 | } | |
4685 | } | |
4686 | ||
4687 | if (node_to_del) | |
4688 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4689 | ||
b3a4db3d | 4690 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4691 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4692 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4693 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4694 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4695 | } | |
4696 | ||
3d0b43d7 | 4697 | /* map VRFs to its RTs and install routes matching this new RT */ |
4698 | if (is_l3vni_live(bgp_vrf)) { | |
4699 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4700 | install_routes_for_vrf(bgp_vrf); | |
4701 | } | |
c581d8b0 MK |
4702 | } |
4703 | ||
4704 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4705 | struct ecommunity *ecomadd) | |
4706 | { | |
4707 | /* remove auto-generated RT */ | |
4708 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4709 | ||
4710 | /* Add the new RT to the RT list */ | |
4711 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4712 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4713 | ||
f1f8b53c | 4714 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4715 | } |
4716 | ||
4717 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4718 | struct ecommunity *ecomdel) | |
4719 | { | |
4720 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4721 | struct ecommunity *ecom = NULL; | |
4722 | ||
4723 | /* Remove the RT from the RT list */ | |
4724 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4725 | if (ecommunity_match(ecom, ecomdel)) { | |
4726 | ecommunity_free(&ecom); | |
4727 | node_to_del = node; | |
4728 | break; | |
4729 | } | |
4730 | } | |
4731 | ||
4732 | if (node_to_del) | |
4733 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4734 | ||
1525e99f DS |
4735 | /* |
4736 | * Temporary assert to make SA happy. | |
4737 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4738 | * which means that SA is going to complain about | |
4739 | * the list_isempty call, which doesn't NULL check. | |
4740 | * So until we get this situation cleaned up, here | |
4741 | * we are. | |
4742 | */ | |
4743 | assert(bgp_vrf->vrf_export_rtl); | |
4744 | ||
c581d8b0 | 4745 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4746 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4747 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4748 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4749 | } | |
4750 | ||
f1f8b53c | 4751 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4752 | } |
4753 | ||
2d48ee25 | 4754 | /* |
4755 | * Handle change to BGP router id. This is invoked twice by the change | |
4756 | * handler, first before the router id has been changed and then after | |
4757 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4758 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4759 | * will result in the routes being re-advertised. |
4760 | */ | |
d62a17ae | 4761 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4762 | { |
5394a276 CS |
4763 | struct listnode *node; |
4764 | struct bgp *bgp_vrf; | |
4765 | ||
676f83b9 | 4766 | if (withdraw) { |
4767 | ||
4768 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4769 | stored in the global table for this vrf |
4770 | */ | |
80b140af | 4771 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4772 | |
4773 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4774 | * L2-VNIs |
4775 | */ | |
d62a17ae | 4776 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4777 | (void (*)(struct hash_bucket *, |
d62a17ae | 4778 | void *))withdraw_router_id_vni, |
4779 | bgp); | |
5394a276 CS |
4780 | |
4781 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4782 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4783 | if (bgp_vrf->evpn_info->advertise_pip && | |
4784 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4785 | == INADDR_ANY)) | |
4786 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4787 | = INADDR_ANY; | |
4788 | } | |
4789 | } | |
676f83b9 | 4790 | } else { |
4791 | ||
5394a276 CS |
4792 | /* Assign new default instance router-id */ |
4793 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4794 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4795 | if (bgp_vrf->evpn_info->advertise_pip && | |
4796 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4797 | == INADDR_ANY)) { | |
4798 | bgp_vrf->evpn_info->pip_ip = | |
4799 | bgp->router_id; | |
4800 | /* advertise type-5 routes with | |
4801 | * new nexthop | |
4802 | */ | |
4803 | update_advertise_vrf_routes(bgp_vrf); | |
4804 | } | |
4805 | } | |
4806 | } | |
4807 | ||
676f83b9 | 4808 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4809 | * RD |
4810 | */ | |
80b140af | 4811 | update_router_id_vrf(bgp); |
676f83b9 | 4812 | |
4813 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4814 | * new RD |
4815 | */ | |
d62a17ae | 4816 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4817 | (void (*)(struct hash_bucket *, |
d62a17ae | 4818 | void *))update_router_id_vni, |
4819 | bgp); | |
676f83b9 | 4820 | } |
2d48ee25 | 4821 | } |
4822 | ||
bf1061d8 VB |
4823 | /* |
4824 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4825 | */ | |
4826 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4827 | { | |
4828 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4829 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4830 | void*))update_autort_vni, |
4831 | bgp); | |
4832 | } | |
4833 | ||
90e60aa7 | 4834 | /* |
4835 | * Handle change to export RT - update and advertise local routes. | |
4836 | */ | |
d62a17ae | 4837 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4838 | { |
d62a17ae | 4839 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4840 | } |
4841 | ||
996c9314 | 4842 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4843 | { |
4844 | if (withdraw) | |
4845 | delete_withdraw_vrf_routes(bgp_vrf); | |
4846 | else | |
4847 | update_advertise_vrf_routes(bgp_vrf); | |
4848 | } | |
4849 | ||
90e60aa7 | 4850 | /* |
4851 | * Handle change to RD. This is invoked twice by the change handler, | |
4852 | * first before the RD has been changed and then after the RD has | |
4853 | * been changed. The first invocation will result in local routes | |
4854 | * of this VNI being deleted and withdrawn and the next will result | |
4855 | * in the routes being re-advertised. | |
4856 | */ | |
d62a17ae | 4857 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4858 | int withdraw) | |
90e60aa7 | 4859 | { |
d62a17ae | 4860 | if (withdraw) |
4861 | delete_withdraw_vni_routes(bgp, vpn); | |
4862 | else | |
4863 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4864 | } |
4865 | ||
4866 | /* | |
4867 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4868 | */ | |
d62a17ae | 4869 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4870 | { |
d62a17ae | 4871 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4872 | } |
4873 | ||
4874 | /* | |
4875 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4876 | * to Import RT. | |
4877 | */ | |
d62a17ae | 4878 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4879 | { |
d62a17ae | 4880 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4881 | } |
4882 | ||
b16031a2 | 4883 | /* |
b57ba6d2 | 4884 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4885 | */ |
d7c0a89a | 4886 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4887 | int len) |
b16031a2 | 4888 | { |
b57ba6d2 | 4889 | vni_t vni1, vni2; |
b16031a2 | 4890 | |
b57ba6d2 MK |
4891 | vni1 = label2vni(label); |
4892 | if (num_labels == 2) { | |
996c9314 | 4893 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4894 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4895 | } else | |
4896 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4897 | return buf; |
b16031a2 | 4898 | } |
4899 | ||
9c92b5f7 MK |
4900 | /* |
4901 | * Function to convert evpn route to json format. | |
4902 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4903 | */ | |
bd494ec5 | 4904 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4905 | { |
b682f6de | 4906 | char buf1[ETHER_ADDR_STRLEN]; |
4907 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4908 | uint8_t family; |
4909 | uint8_t prefixlen; | |
9c92b5f7 | 4910 | |
b682f6de | 4911 | if (!json) |
4912 | return; | |
9c92b5f7 | 4913 | |
44c69747 LK |
4914 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4915 | ||
4916 | switch (p->prefix.route_type) { | |
4917 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4918 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4919 | p->prefix.macip_addr.eth_tag); |
4920 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4921 | json_object_string_add(json, "mac", | |
4922 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4923 | sizeof(buf1))); | |
4924 | ||
4925 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4926 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4927 | AF_INET6; | |
4928 | prefixlen = (family == AF_INET) ? | |
4929 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4930 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4931 | buf2, PREFIX2STR_BUFFER); | |
4932 | json_object_int_add(json, "ipLen", prefixlen); | |
4933 | json_object_string_add(json, "ip", buf2); | |
4934 | } | |
4935 | break; | |
dff8f48d | 4936 | |
44c69747 LK |
4937 | case BGP_EVPN_IMET_ROUTE: |
4938 | json_object_int_add(json, "ethTag", | |
4939 | p->prefix.imet_addr.eth_tag); | |
4940 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4941 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4942 | IPV6_MAX_BITLEN; | |
4943 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4944 | PREFIX2STR_BUFFER); | |
4945 | json_object_int_add(json, "ipLen", prefixlen); | |
4946 | json_object_string_add(json, "ip", buf2); | |
4947 | break; | |
dff8f48d | 4948 | |
44c69747 LK |
4949 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4950 | json_object_int_add(json, "ethTag", | |
4951 | p->prefix.prefix_addr.eth_tag); | |
4952 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4953 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4954 | buf2, sizeof(buf2)); | |
4955 | json_object_int_add(json, "ipLen", | |
4956 | p->prefix.prefix_addr.ip_prefix_length); | |
4957 | json_object_string_add(json, "ip", buf2); | |
4958 | break; | |
4959 | ||
4960 | default: | |
4961 | break; | |
dff8f48d | 4962 | } |
9c92b5f7 MK |
4963 | } |
4964 | ||
520d5d76 | 4965 | /* |
4966 | * Function to convert evpn route to string. | |
4967 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4968 | */ | |
bd494ec5 | 4969 | char *bgp_evpn_route2str(const struct prefix_evpn *p, char *buf, int len) |
d62a17ae | 4970 | { |
4971 | char buf1[ETHER_ADDR_STRLEN]; | |
4972 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4973 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4974 | |
4975 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4976 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4977 | p->prefix.imet_addr.eth_tag, |
4978 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4979 | : IPV6_MAX_BITLEN, |
3714a385 | 4980 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4981 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4982 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4983 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4984 | p->prefix.route_type, | |
3714a385 | 4985 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4986 | 8 * ETH_ALEN, |
3714a385 | 4987 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4988 | sizeof(buf1))); |
4989 | else { | |
d7c0a89a | 4990 | uint8_t family; |
d62a17ae | 4991 | |
3714a385 | 4992 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4993 | : AF_INET6; |
554cd77a VB |
4994 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4995 | p->prefix.route_type, | |
3714a385 | 4996 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4997 | 8 * ETH_ALEN, |
3714a385 | 4998 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4999 | sizeof(buf1)), |
5000 | family == AF_INET ? IPV4_MAX_BITLEN | |
5001 | : IPV6_MAX_BITLEN, | |
3714a385 | 5002 | inet_ntop(family, |
5003 | &p->prefix.macip_addr.ip.ip.addr, | |
5004 | buf2, | |
d62a17ae | 5005 | PREFIX2STR_BUFFER)); |
5006 | } | |
342dd0c6 | 5007 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
5008 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
5009 | p->prefix.route_type, | |
3714a385 | 5010 | p->prefix.prefix_addr.eth_tag, |
5011 | p->prefix.prefix_addr.ip_prefix_length, | |
5012 | is_evpn_prefix_ipaddr_v4(p) | |
5013 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
5014 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 5015 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
5016 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
5017 | p->prefix.route_type, | |
5018 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
5019 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
5020 | : IPV6_MAX_BITLEN, | |
5021 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 5022 | } else { |
b03b8898 | 5023 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
5024 | snprintf(buf, len, "(unsupported route type %d)", |
5025 | p->prefix.route_type); | |
d62a17ae | 5026 | } |
5027 | ||
5028 | return (buf); | |
520d5d76 | 5029 | } |
5030 | ||
128ea8ab | 5031 | /* |
5032 | * Encode EVPN prefix in Update (MP_REACH) | |
5033 | */ | |
5f040085 DS |
5034 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5035 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
5036 | uint32_t num_labels, struct attr *attr, |
5037 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 5038 | { |
5039 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5040 | int len, ipa_len = 0; |
d62a17ae | 5041 | |
5042 | if (addpath_encode) | |
5043 | stream_putl(s, addpath_tx_id); | |
5044 | ||
5045 | /* Route type */ | |
5046 | stream_putc(s, evp->prefix.route_type); | |
5047 | ||
5048 | switch (evp->prefix.route_type) { | |
5049 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5050 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5051 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5052 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5053 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5054 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5055 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5056 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5057 | len += 3; | |
5058 | stream_putc(s, len); | |
996c9314 | 5059 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
5060 | if (attr) |
5061 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
5062 | else | |
5063 | stream_put(s, 0, 10); | |
3714a385 | 5064 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5065 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5066 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5067 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5068 | if (ipa_len) /* IP */ | |
5069 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5070 | ipa_len); | |
b57ba6d2 MK |
5071 | /* 1st label is the L2 VNI */ |
5072 | stream_put(s, label, BGP_LABEL_BYTES); | |
5073 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5074 | if (ipa_len && num_labels > 1) | |
996c9314 | 5075 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5076 | break; |
5077 | ||
5078 | case BGP_EVPN_IMET_ROUTE: | |
5079 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5080 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5081 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5082 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5083 | /* Originating Router's IP Addr */ | |
3714a385 | 5084 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5085 | break; |
5086 | ||
50f74cf1 | 5087 | case BGP_EVPN_ES_ROUTE: |
5088 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5089 | stream_put(s, prd->val, 8); /* RD */ | |
5090 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5091 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5092 | /* VTEP IP */ |
5093 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5094 | break; |
5095 | ||
d62a17ae | 5096 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5097 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5098 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5099 | break; |
5100 | ||
5101 | default: | |
5102 | break; | |
5103 | } | |
5104 | } | |
5105 | ||
5106 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5107 | struct bgp_nlri *packet, int withdraw) | |
5108 | { | |
d7c0a89a QY |
5109 | uint8_t *pnt; |
5110 | uint8_t *lim; | |
d62a17ae | 5111 | afi_t afi; |
5112 | safi_t safi; | |
d7c0a89a | 5113 | uint32_t addpath_id; |
d62a17ae | 5114 | int addpath_encoded; |
5115 | int psize = 0; | |
d7c0a89a | 5116 | uint8_t rtype; |
d62a17ae | 5117 | struct prefix p; |
5118 | ||
d62a17ae | 5119 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5120 | pnt = packet->nlri; | |
5121 | lim = pnt + packet->length; | |
5122 | afi = packet->afi; | |
5123 | safi = packet->safi; | |
5124 | addpath_id = 0; | |
5125 | ||
5126 | addpath_encoded = | |
5127 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
5128 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
5129 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
5130 | ||
5131 | for (; pnt < lim; pnt += psize) { | |
5132 | /* Clear prefix structure. */ | |
5133 | memset(&p, 0, sizeof(struct prefix)); | |
5134 | ||
5135 | /* Deal with path-id if AddPath is supported. */ | |
5136 | if (addpath_encoded) { | |
5137 | /* When packet overflow occurs return immediately. */ | |
5138 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5139 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5140 | |
a3a850a1 S |
5141 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5142 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5143 | pnt += BGP_ADDPATH_ID_LEN; |
5144 | } | |
5145 | ||
5146 | /* All EVPN NLRI types start with type and length. */ | |
5147 | if (pnt + 2 > lim) | |
513386b5 | 5148 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5149 | |
5150 | rtype = *pnt++; | |
3f54c705 | 5151 | psize = *pnt++; |
d62a17ae | 5152 | |
5153 | /* When packet overflow occur return immediately. */ | |
5154 | if (pnt + psize > lim) | |
513386b5 | 5155 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5156 | |
5157 | switch (rtype) { | |
5158 | case BGP_EVPN_MAC_IP_ROUTE: | |
5159 | if (process_type2_route(peer, afi, safi, | |
5160 | withdraw ? NULL : attr, pnt, | |
5161 | psize, addpath_id)) { | |
af4c2728 | 5162 | flog_err( |
e50f7cfd | 5163 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5164 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5165 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5166 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5167 | } |
5168 | break; | |
5169 | ||
5170 | case BGP_EVPN_IMET_ROUTE: | |
5171 | if (process_type3_route(peer, afi, safi, | |
5172 | withdraw ? NULL : attr, pnt, | |
5173 | psize, addpath_id)) { | |
af4c2728 | 5174 | flog_err( |
e50f7cfd | 5175 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5176 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5177 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5178 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5179 | } |
5180 | break; | |
5181 | ||
50f74cf1 | 5182 | case BGP_EVPN_ES_ROUTE: |
5183 | if (process_type4_route(peer, afi, safi, | |
5184 | withdraw ? NULL : attr, pnt, | |
5185 | psize, addpath_id)) { | |
af4c2728 | 5186 | flog_err( |
e50f7cfd | 5187 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5188 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5189 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5190 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5191 | } |
5192 | break; | |
5193 | ||
d62a17ae | 5194 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5195 | if (process_type5_route(peer, afi, safi, |
5196 | withdraw ? NULL : attr, pnt, | |
5197 | psize, addpath_id)) { | |
af4c2728 | 5198 | flog_err( |
e50f7cfd | 5199 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5200 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5201 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5202 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5203 | } |
5204 | break; | |
5205 | ||
5206 | default: | |
5207 | break; | |
5208 | } | |
5209 | } | |
5210 | ||
5211 | /* Packet length consistency check. */ | |
5212 | if (pnt != lim) | |
513386b5 | 5213 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5214 | |
513386b5 | 5215 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5216 | } |
5217 | ||
10ebe1ab MK |
5218 | /* |
5219 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5220 | * The mapping will be used during route processing. | |
5221 | * bgp_def: default bgp instance | |
5222 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5223 | */ | |
5224 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5225 | { | |
5226 | int i = 0; | |
5227 | struct ecommunity_val *eval = NULL; | |
5228 | struct listnode *node = NULL, *nnode = NULL; | |
5229 | struct ecommunity *ecom = NULL; | |
5230 | ||
5231 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5232 | for (i = 0; i < ecom->size; i++) { | |
5233 | eval = (struct ecommunity_val *)(ecom->val | |
5234 | + (i | |
5235 | * ECOMMUNITY_SIZE)); | |
5236 | map_vrf_to_rt(bgp_vrf, eval); | |
5237 | } | |
5238 | } | |
5239 | } | |
5240 | ||
5241 | /* | |
5242 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5243 | */ | |
5244 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5245 | { | |
5246 | int i; | |
5247 | struct ecommunity_val *eval; | |
5248 | struct listnode *node, *nnode; | |
5249 | struct ecommunity *ecom; | |
5250 | ||
5251 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5252 | for (i = 0; i < ecom->size; i++) { | |
5253 | struct vrf_irt_node *irt; | |
5254 | struct ecommunity_val eval_tmp; | |
5255 | ||
5256 | eval = (struct ecommunity_val *)(ecom->val | |
5257 | + (i | |
5258 | * ECOMMUNITY_SIZE)); | |
5259 | /* If using "automatic" RT, we only care about the | |
5260 | * local-admin sub-field. | |
5261 | * This is to facilitate using VNI as the RT for EBGP | |
5262 | * peering too. | |
5263 | */ | |
5264 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5265 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5266 | BGP_VRF_IMPORT_RT_CFGD)) | |
5267 | mask_ecom_global_admin(&eval_tmp, eval); | |
5268 | ||
5269 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5270 | if (irt) | |
5271 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5272 | } | |
5273 | } | |
5274 | } | |
5275 | ||
5276 | ||
128ea8ab | 5277 | /* |
5278 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5279 | * The mapping will be used during route processing. | |
5280 | */ | |
d62a17ae | 5281 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5282 | { |
d62a17ae | 5283 | int i; |
5284 | struct ecommunity_val *eval; | |
5285 | struct listnode *node, *nnode; | |
5286 | struct ecommunity *ecom; | |
128ea8ab | 5287 | |
d62a17ae | 5288 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5289 | for (i = 0; i < ecom->size; i++) { | |
5290 | eval = (struct ecommunity_val *)(ecom->val | |
5291 | + (i | |
5292 | * ECOMMUNITY_SIZE)); | |
5293 | map_vni_to_rt(bgp, vpn, eval); | |
5294 | } | |
5295 | } | |
128ea8ab | 5296 | } |
5297 | ||
5298 | /* | |
5299 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5300 | */ | |
d62a17ae | 5301 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5302 | { |
d62a17ae | 5303 | int i; |
5304 | struct ecommunity_val *eval; | |
5305 | struct listnode *node, *nnode; | |
5306 | struct ecommunity *ecom; | |
128ea8ab | 5307 | |
d62a17ae | 5308 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5309 | for (i = 0; i < ecom->size; i++) { | |
5310 | struct irt_node *irt; | |
5311 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5312 | |
d62a17ae | 5313 | eval = (struct ecommunity_val *)(ecom->val |
5314 | + (i | |
5315 | * ECOMMUNITY_SIZE)); | |
5316 | /* If using "automatic" RT, we only care about the | |
5317 | * local-admin sub-field. | |
5318 | * This is to facilitate using VNI as the RT for EBGP | |
5319 | * peering too. | |
5320 | */ | |
5321 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5322 | if (!is_import_rt_configured(vpn)) | |
5323 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5324 | |
d62a17ae | 5325 | irt = lookup_import_rt(bgp, &eval_tmp); |
5326 | if (irt) | |
5327 | unmap_vni_from_rt(bgp, vpn, irt); | |
5328 | } | |
5329 | } | |
128ea8ab | 5330 | } |
5331 | ||
5332 | /* | |
5333 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5334 | * The mapping will be used during route processing. | |
5335 | */ | |
d62a17ae | 5336 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5337 | { |
c581d8b0 | 5338 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5339 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5340 | |
d62a17ae | 5341 | /* Map RT to VNI */ |
5342 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5343 | } |
5344 | ||
5345 | /* | |
5346 | * Derive Export RT automatically for VNI. | |
5347 | */ | |
d62a17ae | 5348 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5349 | { |
c581d8b0 | 5350 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5351 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5352 | } |
5353 | ||
676f83b9 | 5354 | /* |
5355 | * Derive RD automatically for VNI using passed information - it | |
5356 | * is of the form RouterId:unique-id-for-vni. | |
5357 | */ | |
5358 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5359 | { | |
9e97ff03 CS |
5360 | if (is_vrf_rd_configured(bgp)) |
5361 | return; | |
5362 | ||
92708db6 | 5363 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5364 | } |
5365 | ||
128ea8ab | 5366 | /* |
5367 | * Derive RD automatically for VNI using passed information - it | |
5368 | * is of the form RouterId:unique-id-for-vni. | |
5369 | */ | |
d62a17ae | 5370 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5371 | { |
d62a17ae | 5372 | char buf[100]; |
128ea8ab | 5373 | |
d62a17ae | 5374 | vpn->prd.family = AF_UNSPEC; |
5375 | vpn->prd.prefixlen = 64; | |
5376 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 5377 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5378 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5379 | } |
5380 | ||
7df407ed CS |
5381 | /* |
5382 | * Lookup L3-VNI | |
5383 | */ | |
5384 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5385 | { | |
5386 | struct list *inst = bm->bgp; | |
5387 | struct listnode *node; | |
5388 | struct bgp *bgp_vrf; | |
5389 | ||
5390 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5391 | if (bgp_vrf->l3vni == vni) | |
5392 | return true; | |
5393 | } | |
5394 | ||
5395 | return false; | |
5396 | } | |
5397 | ||
128ea8ab | 5398 | /* |
5399 | * Lookup VNI. | |
5400 | */ | |
d62a17ae | 5401 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5402 | { |
d62a17ae | 5403 | struct bgpevpn *vpn; |
5404 | struct bgpevpn tmp; | |
128ea8ab | 5405 | |
d62a17ae | 5406 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5407 | tmp.vni = vni; | |
5408 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5409 | return vpn; | |
128ea8ab | 5410 | } |
5411 | ||
5412 | /* | |
5413 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5414 | */ | |
d62a17ae | 5415 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5416 | struct in_addr originator_ip, |
5417 | vrf_id_t tenant_vrf_id, | |
5418 | struct in_addr mcast_grp) | |
128ea8ab | 5419 | { |
d62a17ae | 5420 | struct bgpevpn *vpn; |
128ea8ab | 5421 | |
d62a17ae | 5422 | if (!bgp) |
5423 | return NULL; | |
128ea8ab | 5424 | |
d62a17ae | 5425 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5426 | |
d62a17ae | 5427 | /* Set values - RD and RT set to defaults. */ |
5428 | vpn->vni = vni; | |
5429 | vpn->originator_ip = originator_ip; | |
29c53922 | 5430 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5431 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5432 | |
d62a17ae | 5433 | /* Initialize route-target import and export lists */ |
5434 | vpn->import_rtl = list_new(); | |
5435 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5436 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5437 | vpn->export_rtl = list_new(); |
5438 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5439 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5440 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5441 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5442 | |
d62a17ae | 5443 | /* Initialize EVPN route table. */ |
960035b2 | 5444 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5445 | |
d62a17ae | 5446 | /* Add to hash */ |
5447 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5448 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5449 | return NULL; | |
5450 | } | |
6a8657d0 MK |
5451 | |
5452 | /* add to l2vni list on corresponding vrf */ | |
5453 | bgpevpn_link_to_l3vni(vpn); | |
5454 | ||
d62a17ae | 5455 | QOBJ_REG(vpn, bgpevpn); |
5456 | return vpn; | |
128ea8ab | 5457 | } |
5458 | ||
5459 | /* | |
5460 | * Free a given VPN - called in multiple scenarios such as zebra | |
5461 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5462 | * This just frees appropriate memory, caller should have taken other | |
5463 | * needed actions. | |
5464 | */ | |
d62a17ae | 5465 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5466 | { |
6a8657d0 | 5467 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5468 | bgp_table_unlock(vpn->route_table); |
5469 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5470 | list_delete(&vpn->import_rtl); |
5471 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5472 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5473 | hash_release(bgp->vnihash, vpn); |
5474 | QOBJ_UNREG(vpn); | |
5475 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5476 | } |
5477 | ||
5478 | /* | |
50f74cf1 | 5479 | * Lookup local ES. |
5480 | */ | |
5481 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5482 | { | |
5483 | struct evpnes *es; | |
5484 | struct evpnes tmp; | |
5485 | ||
5486 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5487 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5488 | es = hash_lookup(bgp->esihash, &tmp); | |
5489 | return es; | |
5490 | } | |
5491 | ||
5492 | /* | |
5493 | * Create a new local es - invoked upon zebra notification. | |
5494 | */ | |
5495 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5496 | esi_t *esi, | |
5497 | struct ipaddr *originator_ip) | |
5498 | { | |
5499 | char buf[100]; | |
5500 | struct evpnes *es; | |
5501 | ||
5502 | if (!bgp) | |
5503 | return NULL; | |
5504 | ||
5505 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
50f74cf1 | 5506 | |
5507 | /* set the ESI and originator_ip */ | |
5508 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5509 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5510 | ||
5511 | /* Initialise the VTEP list */ | |
5512 | es->vtep_list = list_new(); | |
ce167790 | 5513 | es->vtep_list->cmp = evpn_vtep_ip_cmp; |
50f74cf1 | 5514 | |
5515 | /* auto derive RD for this es */ | |
5516 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5517 | es->prd.family = AF_UNSPEC; | |
5518 | es->prd.prefixlen = 64; | |
5519 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5520 | (void)str2prefix_rd(buf, &es->prd); | |
5521 | ||
5522 | /* Initialize the ES route table */ | |
5523 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5524 | ||
5525 | /* Add to hash */ | |
5526 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5527 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5528 | return NULL; | |
5529 | } | |
5530 | ||
5531 | QOBJ_REG(es, evpnes); | |
5532 | return es; | |
5533 | } | |
5534 | ||
5535 | /* | |
5536 | * Free a given ES - | |
5537 | * This just frees appropriate memory, caller should have taken other | |
5538 | * needed actions. | |
5539 | */ | |
5540 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5541 | { | |
6a154c88 | 5542 | list_delete(&es->vtep_list); |
50f74cf1 | 5543 | bgp_table_unlock(es->route_table); |
5544 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5545 | hash_release(bgp->esihash, es); | |
5546 | QOBJ_UNREG(es); | |
5547 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5548 | } | |
5549 | ||
5550 | /* | |
5551 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5552 | */ |
d62a17ae | 5553 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5554 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5555 | { |
40381db7 | 5556 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5557 | } |
5558 | ||
5559 | /* | |
50f74cf1 | 5560 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5561 | */ |
d62a17ae | 5562 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5563 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5564 | { |
40381db7 | 5565 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5566 | } |
5567 | ||
db0e1937 MK |
5568 | /* filter routes which have martian next hops */ |
5569 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5570 | { | |
0291c246 MK |
5571 | afi_t afi; |
5572 | safi_t safi; | |
5573 | struct bgp_node *rd_rn, *rn; | |
5574 | struct bgp_table *table; | |
40381db7 | 5575 | struct bgp_path_info *pi; |
db0e1937 MK |
5576 | |
5577 | afi = AFI_L2VPN; | |
5578 | safi = SAFI_EVPN; | |
5579 | ||
5580 | /* Walk entire global routing table and evaluate routes which could be | |
5581 | * imported into this VPN. Note that we cannot just look at the routes | |
5582 | * for the VNI's RD - | |
5583 | * remote routes applicable for this VNI could have any RD. | |
5584 | */ | |
5585 | /* EVPN routes are a 2-level table. */ | |
5586 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5587 | rd_rn = bgp_route_next(rd_rn)) { | |
67009e22 | 5588 | table = bgp_node_get_bgp_table_info(rd_rn); |
db0e1937 MK |
5589 | if (!table) |
5590 | continue; | |
5591 | ||
5592 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5593 | ||
6f94b685 DS |
5594 | for (pi = bgp_node_get_bgp_path_info(rn); pi; |
5595 | pi = pi->next) { | |
db0e1937 MK |
5596 | |
5597 | /* Consider "valid" remote routes applicable for | |
5598 | * this VNI. */ | |
40381db7 DS |
5599 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5600 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5601 | continue; |
949b0f24 | 5602 | if (bgp_nexthop_self(bgp, afi, |
5603 | pi->type, pi->sub_type, | |
5604 | pi->attr, rn)) { | |
db0e1937 | 5605 | |
8ba71050 | 5606 | char attr_str[BUFSIZ] = {0}; |
db0e1937 MK |
5607 | char pbuf[PREFIX_STRLEN]; |
5608 | ||
40381db7 | 5609 | bgp_dump_attr(pi->attr, attr_str, |
db0e1937 MK |
5610 | BUFSIZ); |
5611 | ||
40381db7 | 5612 | if (bgp_debug_update(pi->peer, &rn->p, |
db0e1937 MK |
5613 | NULL, 1)) |
5614 | zlog_debug( | |
b682f6de | 5615 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5616 | bgp->vrf_id, |
5617 | prefix2str( | |
60466a63 | 5618 | &rn->p, pbuf, |
db0e1937 MK |
5619 | sizeof(pbuf)), |
5620 | attr_str); | |
5621 | ||
5622 | bgp_evpn_unimport_route(bgp, afi, safi, | |
40381db7 | 5623 | &rn->p, pi); |
db0e1937 | 5624 | |
40381db7 | 5625 | bgp_rib_remove(rn, pi, pi->peer, afi, |
60466a63 | 5626 | safi); |
db0e1937 | 5627 | } |
db0e1937 MK |
5628 | } |
5629 | } | |
5630 | } | |
5631 | ||
5632 | return 0; | |
5633 | } | |
5634 | ||
128ea8ab | 5635 | /* |
5636 | * Handle del of a local MACIP. | |
5637 | */ | |
d62a17ae | 5638 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5639 | struct ipaddr *ip, int state) |
128ea8ab | 5640 | { |
d62a17ae | 5641 | struct bgpevpn *vpn; |
5642 | struct prefix_evpn p; | |
ec0ab544 | 5643 | struct bgp_node *rn; |
128ea8ab | 5644 | |
d62a17ae | 5645 | /* Lookup VNI hash - should exist. */ |
5646 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5647 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5648 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5649 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5650 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5651 | return -1; | |
5652 | } | |
128ea8ab | 5653 | |
d62a17ae | 5654 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5655 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5656 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5657 | delete_evpn_route(bgp, vpn, &p); | |
5658 | } else { | |
5659 | /* Re-instate the current remote best path if any */ | |
5660 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
5661 | if (rn) | |
5662 | evpn_zebra_reinstall_best_route(bgp, vpn, rn); | |
5663 | } | |
128ea8ab | 5664 | |
d62a17ae | 5665 | return 0; |
128ea8ab | 5666 | } |
5667 | ||
5668 | /* | |
5669 | * Handle add of a local MACIP. | |
5670 | */ | |
d62a17ae | 5671 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
f07e1c99 | 5672 | struct ipaddr *ip, uint8_t flags, uint32_t seq) |
128ea8ab | 5673 | { |
d62a17ae | 5674 | struct bgpevpn *vpn; |
5675 | struct prefix_evpn p; | |
128ea8ab | 5676 | |
d62a17ae | 5677 | /* Lookup VNI hash - should exist. */ |
5678 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5679 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5680 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5681 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5682 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5683 | return -1; | |
5684 | } | |
128ea8ab | 5685 | |
d62a17ae | 5686 | /* Create EVPN type-2 route and schedule for processing. */ |
5687 | build_evpn_type2_prefix(&p, mac, ip); | |
f07e1c99 | 5688 | if (update_evpn_route(bgp, vpn, &p, flags, seq)) { |
d62a17ae | 5689 | char buf[ETHER_ADDR_STRLEN]; |
5690 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5691 | |
af4c2728 | 5692 | flog_err( |
e50f7cfd | 5693 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5694 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5695 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5696 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5697 | ? "sticky gateway" | |
5698 | : "", | |
d62a17ae | 5699 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5700 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5701 | return -1; |
5702 | } | |
128ea8ab | 5703 | |
d62a17ae | 5704 | return 0; |
128ea8ab | 5705 | } |
5706 | ||
e3b78da8 | 5707 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5708 | struct bgp *bgp_vrf) |
5709 | { | |
e3b78da8 | 5710 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5711 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5712 | |
5e53dce3 T |
5713 | bgp_evpn = bgp_get_evpn(); |
5714 | assert(bgp_evpn); | |
6a8657d0 | 5715 | |
6a8657d0 MK |
5716 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5717 | bgpevpn_link_to_l3vni(vpn); | |
5718 | } | |
5719 | ||
14e814ea CS |
5720 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5721 | struct ethaddr *svi_rmac, | |
5722 | struct ethaddr *vrr_rmac, | |
0483af6e | 5723 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5724 | ifindex_t svi_ifindex, |
5725 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5726 | { |
5727 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5728 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5729 | struct listnode *node = NULL; |
5730 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5731 | as_t as = 0; |
5732 | ||
3621ebc5 | 5733 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5734 | * auto-creatio |
5735 | */ | |
5e53dce3 T |
5736 | bgp_evpn = bgp_get_evpn(); |
5737 | if (!bgp_evpn) { | |
af4c2728 | 5738 | flog_err( |
e50f7cfd | 5739 | EC_BGP_NO_DFLT, |
3621ebc5 | 5740 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5741 | l3vni); |
fe1dc5a3 MK |
5742 | return -1; |
5743 | } | |
5e53dce3 | 5744 | as = bgp_evpn->as; |
fe1dc5a3 | 5745 | |
0437e105 | 5746 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5747 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5748 | if (!bgp_vrf) { |
5749 | ||
5750 | int ret = 0; | |
5751 | ||
5d5393b9 DL |
5752 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5753 | vrf_id == VRF_DEFAULT | |
5754 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5755 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5756 | switch (ret) { |
fe1dc5a3 | 5757 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5758 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5759 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5760 | return -1; |
5761 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5762 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5763 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5764 | return -1; |
5765 | } | |
5766 | ||
5767 | /* mark as auto created */ | |
5768 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5769 | } | |
5770 | ||
0483af6e | 5771 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5772 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5773 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5774 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5775 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5776 | |
14e814ea CS |
5777 | /* copy anycast MAC from VRR MAC */ |
5778 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5779 | /* copy sys RMAC from SVI MAC */ | |
5780 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5781 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5782 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5783 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5784 | ||
5785 | if (bgp_debug_zebra(NULL)) { | |
5786 | char buf[ETHER_ADDR_STRLEN]; | |
5787 | char buf1[ETHER_ADDR_STRLEN]; | |
5788 | char buf2[ETHER_ADDR_STRLEN]; | |
5789 | ||
5790 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5791 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5792 | bgp_vrf->l3vni, | |
5793 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5794 | : "disable", | |
5795 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5796 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5797 | buf1, sizeof(buf1)), | |
5798 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5799 | buf2, sizeof(buf2)), | |
5800 | is_anycast_mac ? "Enable" : "Disable"); | |
5801 | } | |
c48d9f5f MK |
5802 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5803 | if (filter) | |
5804 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5805 | ||
530e8a6e | 5806 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5807 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5808 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5809 | else |
5810 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5811 | ||
c581d8b0 MK |
5812 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5813 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5814 | |
5815 | /* auto derive RD */ | |
676f83b9 | 5816 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5817 | |
6a8657d0 | 5818 | /* link all corresponding l2vnis */ |
5e53dce3 | 5819 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5820 | (void (*)(struct hash_bucket *, |
996c9314 | 5821 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5822 | bgp_vrf); |
5823 | ||
c48d9f5f MK |
5824 | /* Only update all corresponding type-2 routes if we are advertising two |
5825 | * labels along with type-2 routes | |
5826 | */ | |
5827 | if (!filter) | |
5828 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5829 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5830 | |
06d2e8f3 MK |
5831 | /* advertise type-5 routes if needed */ |
5832 | update_advertise_vrf_routes(bgp_vrf); | |
5833 | ||
5ba238b7 MK |
5834 | /* install all remote routes belonging to this l3vni into correspondng |
5835 | * vrf */ | |
5836 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5837 | |
5838 | return 0; | |
5839 | } | |
5840 | ||
996c9314 | 5841 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5842 | { |
5843 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5844 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5845 | struct listnode *node = NULL; |
18abc1eb | 5846 | struct listnode *next = NULL; |
f1f8b53c | 5847 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5848 | |
5849 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5850 | if (!bgp_vrf) { | |
af4c2728 | 5851 | flog_err( |
e50f7cfd | 5852 | EC_BGP_NO_DFLT, |
996c9314 LB |
5853 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5854 | l3vni); | |
fe1dc5a3 MK |
5855 | return -1; |
5856 | } | |
5857 | ||
5e53dce3 T |
5858 | bgp_evpn = bgp_get_evpn(); |
5859 | if (!bgp_evpn) { | |
af4c2728 | 5860 | flog_err( |
e50f7cfd | 5861 | EC_BGP_NO_DFLT, |
3621ebc5 | 5862 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5863 | l3vni); |
f1f8b53c MK |
5864 | return -1; |
5865 | } | |
5866 | ||
d846168d | 5867 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5868 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5869 | * routes. This will uninstalling the routes from zebra and decremnt the |
5870 | * bgp info count. | |
523cafc4 | 5871 | */ |
d846168d | 5872 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5873 | |
06d2e8f3 MK |
5874 | /* delete/withdraw all type-5 routes */ |
5875 | delete_withdraw_vrf_routes(bgp_vrf); | |
5876 | ||
fe1dc5a3 MK |
5877 | /* remove the l3vni from vrf instance */ |
5878 | bgp_vrf->l3vni = 0; | |
5879 | ||
5880 | /* remove the Rmac from the BGP vrf */ | |
5881 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5882 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5883 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5884 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5885 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5886 | |
530e8a6e | 5887 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5888 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5889 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5890 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5891 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5892 | } |
530e8a6e CS |
5893 | |
5894 | /* remove default export RT */ | |
5895 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5896 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5897 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5898 | } |
fe1dc5a3 | 5899 | |
f1f8b53c | 5900 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5901 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5902 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5903 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5904 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5905 | } |
5906 | } | |
fe1dc5a3 | 5907 | |
18abc1eb | 5908 | /* If any L2VNIs point to this instance, unlink them. */ |
5909 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5910 | bgpevpn_unlink_from_l3vni(vpn); | |
5911 | ||
ff9d54fb CS |
5912 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5913 | ||
fe1dc5a3 MK |
5914 | /* Delete the instance if it was autocreated */ |
5915 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5916 | bgp_delete(bgp_vrf); | |
5917 | ||
5918 | return 0; | |
5919 | } | |
5920 | ||
128ea8ab | 5921 | /* |
5922 | * Handle del of a local VNI. | |
5923 | */ | |
d62a17ae | 5924 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5925 | { |
d62a17ae | 5926 | struct bgpevpn *vpn; |
128ea8ab | 5927 | |
d62a17ae | 5928 | /* Locate VNI hash */ |
5929 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5930 | if (!vpn) { | |
1e00627b | 5931 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5932 | flog_warn( |
e50f7cfd | 5933 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5934 | "%u: VNI hash entry for VNI %u not found at DEL", |
5935 | bgp->vrf_id, vni); | |
d62a17ae | 5936 | return 0; |
5937 | } | |
128ea8ab | 5938 | |
d62a17ae | 5939 | /* Remove all local EVPN routes and schedule for processing (to |
5940 | * withdraw from peers). | |
5941 | */ | |
5942 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5943 | |
db0e1937 MK |
5944 | /* |
5945 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5946 | */ | |
5947 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5948 | ||
d62a17ae | 5949 | /* Clear "live" flag and see if hash needs to be freed. */ |
5950 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5951 | if (!is_vni_configured(vpn)) | |
5952 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5953 | |
d62a17ae | 5954 | return 0; |
128ea8ab | 5955 | } |
5956 | ||
5957 | /* | |
d1911c26 | 5958 | * Handle add (or update) of a local VNI. The VNI changes we care |
5959 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5960 | */ |
d62a17ae | 5961 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5962 | struct in_addr originator_ip, |
5963 | vrf_id_t tenant_vrf_id, | |
5964 | struct in_addr mcast_grp) | |
5965 | ||
d62a17ae | 5966 | { |
5967 | struct bgpevpn *vpn; | |
5968 | struct prefix_evpn p; | |
5969 | ||
d62a17ae | 5970 | /* Lookup VNI. If present and no change, exit. */ |
5971 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5972 | if (vpn) { |
29c53922 | 5973 | |
d1911c26 | 5974 | if (is_vni_live(vpn) |
5975 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5976 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5977 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5978 | /* Probably some other param has changed that we don't | |
5979 | * care about. */ | |
5980 | return 0; | |
5981 | ||
76d07c7a AK |
5982 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5983 | ||
d1911c26 | 5984 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5985 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5986 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5987 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5988 | bgpevpn_link_to_l3vni(vpn); |
5989 | } | |
29c53922 | 5990 | |
d1911c26 | 5991 | /* If tunnel endpoint IP has changed, update (and delete prior |
5992 | * type-3 route, if needed.) | |
5993 | */ | |
5994 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5995 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5996 | |
d1911c26 | 5997 | /* Update all routes with new endpoint IP and/or export RT |
5998 | * for VRFs | |
5999 | */ | |
6000 | if (is_vni_live(vpn)) | |
6001 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 6002 | } |
6003 | ||
6004 | /* Create or update as appropriate. */ | |
6005 | if (!vpn) { | |
76d07c7a AK |
6006 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
6007 | mcast_grp); | |
d62a17ae | 6008 | if (!vpn) { |
af4c2728 | 6009 | flog_err( |
e50f7cfd | 6010 | EC_BGP_VNI, |
d62a17ae | 6011 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
6012 | bgp->vrf_id, vni); | |
6013 | return -1; | |
6014 | } | |
6015 | } | |
6016 | ||
db0e1937 | 6017 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6018 | if (is_vni_live(vpn)) |
6019 | return 0; | |
6020 | ||
d62a17ae | 6021 | /* Mark as "live" */ |
6022 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6023 | ||
db0e1937 MK |
6024 | /* tunnel is now active, add tunnel-ip to db */ |
6025 | bgp_tip_add(bgp, &originator_ip); | |
6026 | ||
6027 | /* filter routes as nexthop database has changed */ | |
6028 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
6029 | ||
fd069644 DS |
6030 | /* |
6031 | * Create EVPN type-3 route and schedule for processing. | |
6032 | * | |
6033 | * RT-3 only if doing head-end replication | |
6034 | */ | |
833b8a50 AK |
6035 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6036 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 DS |
6037 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
6038 | if (update_evpn_route(bgp, vpn, &p, 0, 0)) { | |
6039 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
6040 | "%u: Type3 route creation failure for VNI %u", | |
6041 | bgp->vrf_id, vni); | |
6042 | return -1; | |
6043 | } | |
d62a17ae | 6044 | } |
6045 | ||
6046 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6047 | * VNI, | |
6048 | * install them. | |
6049 | */ | |
6050 | install_routes_for_vni(bgp, vpn); | |
6051 | ||
d7d97010 MK |
6052 | /* If we are advertising gateway mac-ip |
6053 | It needs to be conveyed again to zebra */ | |
6054 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6055 | ||
df070e6f CS |
6056 | /* advertise svi mac-ip knob to zebra */ |
6057 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6058 | ||
d62a17ae | 6059 | return 0; |
b18825eb | 6060 | } |
14c1a7bf | 6061 | |
50f74cf1 | 6062 | /* |
6063 | * bgp_evpn_local_es_del | |
6064 | */ | |
6065 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
6066 | esi_t *esi, | |
6067 | struct ipaddr *originator_ip) | |
6068 | { | |
6069 | char buf[ESI_STR_LEN]; | |
6070 | struct evpnes *es = NULL; | |
6071 | ||
6072 | if (!bgp->esihash) { | |
e50f7cfd | 6073 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6074 | bgp->vrf_id); |
50f74cf1 | 6075 | return -1; |
6076 | } | |
6077 | ||
6078 | /* Lookup ESI hash - should exist. */ | |
6079 | es = bgp_evpn_lookup_es(bgp, esi); | |
6080 | if (!es) { | |
e50f7cfd | 6081 | flog_warn(EC_BGP_EVPN_ESI, |
28642513 DS |
6082 | "%u: ESI hash entry for ESI %s at Local ES DEL", |
6083 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6084 | return -1; |
6085 | } | |
6086 | ||
6087 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 6088 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 6089 | */ |
6090 | delete_routes_for_es(bgp, es); | |
6091 | ||
6092 | /* free the hash entry */ | |
6093 | bgp_evpn_es_free(bgp, es); | |
6094 | ||
6095 | return 0; | |
6096 | } | |
6097 | ||
6098 | /* | |
6099 | * bgp_evpn_local_es_add | |
6100 | */ | |
6101 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
6102 | esi_t *esi, | |
6103 | struct ipaddr *originator_ip) | |
6104 | { | |
6105 | char buf[ESI_STR_LEN]; | |
6106 | struct evpnes *es = NULL; | |
6107 | struct prefix_evpn p; | |
6108 | ||
6109 | if (!bgp->esihash) { | |
e50f7cfd | 6110 | flog_err(EC_BGP_ES_CREATE, "%u: ESI hash not yet created", |
1c50c1c0 | 6111 | bgp->vrf_id); |
50f74cf1 | 6112 | return -1; |
6113 | } | |
6114 | ||
6115 | /* create the new es */ | |
2bb9eff4 | 6116 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 6117 | if (!es) { |
6118 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
6119 | if (!es) { | |
af4c2728 | 6120 | flog_err( |
e50f7cfd | 6121 | EC_BGP_ES_CREATE, |
50f74cf1 | 6122 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", |
6123 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
6124 | return -1; | |
6125 | } | |
6126 | } | |
6127 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
6128 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
6129 | ||
6130 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
6131 | if (update_evpn_type4_route(bgp, es, &p)) { | |
e50f7cfd | 6132 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
6133 | "%u: Type4 route creation failure for ESI %s", |
6134 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
50f74cf1 | 6135 | return -1; |
6136 | } | |
6137 | ||
6138 | /* import all remote ES routes in th ES table */ | |
6139 | install_routes_for_es(bgp, es); | |
6140 | ||
6141 | return 0; | |
6142 | } | |
6143 | ||
fd069644 DS |
6144 | /* |
6145 | * Handle change in setting for BUM handling. The supported values | |
6146 | * are head-end replication and dropping all BUM packets. Any change | |
6147 | * should be registered with zebra. Also, if doing head-end replication, | |
6148 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6149 | * to be dropped, the RT-3s must be withdrawn. | |
6150 | */ | |
6151 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6152 | { | |
6153 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6154 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6155 | "Flooding" : "Flooding Disabled"); | |
6156 | ||
6157 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6158 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6159 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6160 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6161 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6162 | } | |
6163 | ||
7724c0a1 | 6164 | /* |
6165 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6166 | * EVPN routes from peers. | |
6167 | */ | |
d62a17ae | 6168 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6169 | { |
e3b78da8 | 6170 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6171 | void *))cleanup_vni_on_disable, |
6172 | bgp); | |
7724c0a1 | 6173 | } |
6174 | ||
14c1a7bf | 6175 | /* |
6176 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6177 | * BGP instance (default) is being freed. | |
6178 | */ | |
d62a17ae | 6179 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6180 | { |
1525e99f | 6181 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6182 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6183 | bgp); |
6184 | ||
6185 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 6186 | bgp->import_rt_hash = NULL; |
1525e99f DS |
6187 | |
6188 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 6189 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
6190 | |
6191 | hash_free(bgp->vnihash); | |
d62a17ae | 6192 | bgp->vnihash = NULL; |
50f74cf1 | 6193 | if (bgp->esihash) |
6194 | hash_free(bgp->esihash); | |
6195 | bgp->esihash = NULL; | |
1525e99f | 6196 | |
6a154c88 DL |
6197 | list_delete(&bgp->vrf_import_rtl); |
6198 | list_delete(&bgp->vrf_export_rtl); | |
6199 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6200 | } |
6201 | ||
6202 | /* | |
6203 | * Initialization for EVPN | |
6204 | * Create | |
6205 | * VNI hash table | |
6206 | * hash for RT to VNI | |
14c1a7bf | 6207 | */ |
d62a17ae | 6208 | void bgp_evpn_init(struct bgp *bgp) |
6209 | { | |
6210 | bgp->vnihash = | |
6211 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 6212 | bgp->esihash = |
6213 | hash_create(esi_hash_keymake, esi_cmp, | |
6214 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 6215 | bgp->import_rt_hash = |
6216 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6217 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6218 | bgp->vrf_import_rt_hash = |
6219 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6220 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6221 | bgp->vrf_import_rtl = list_new(); |
6222 | bgp->vrf_import_rtl->cmp = | |
6223 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6224 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
6225 | bgp->vrf_export_rtl = list_new(); |
6226 | bgp->vrf_export_rtl->cmp = | |
6227 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 6228 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 6229 | bgp->l2vnis = list_new(); |
64465785 | 6230 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6231 | /* By default Duplicate Address Dection is enabled. |
6232 | * Max-moves (N) 5, detection time (M) 180 | |
6233 | * default action is warning-only | |
6234 | * freeze action permanently freezes address, | |
6235 | * and freeze time (auto-recovery) is disabled. | |
6236 | */ | |
6237 | if (bgp->evpn_info) { | |
6238 | bgp->evpn_info->dup_addr_detect = true; | |
6239 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6240 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6241 | bgp->evpn_info->dad_freeze = false; | |
6242 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6243 | /* Initialize zebra vxlan */ |
6244 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6245 | /* Enable PIP feature by default for bgp vrf instance */ |
6246 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6247 | struct bgp *bgp_default; | |
6248 | ||
6249 | bgp->evpn_info->advertise_pip = true; | |
6250 | bgp_default = bgp_get_default(); | |
6251 | if (bgp_default) | |
6252 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6253 | } | |
85c8d83b | 6254 | } |
fd069644 DS |
6255 | |
6256 | /* Default BUM handling is to do head-end replication. */ | |
6257 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 6258 | } |
10ebe1ab MK |
6259 | |
6260 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6261 | { | |
6262 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
6263 | } | |
44c69747 LK |
6264 | |
6265 | /* | |
6266 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6267 | */ | |
5f040085 | 6268 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6269 | { |
6270 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6271 | ||
6272 | if (!pfx || pfx->family != AF_EVPN) | |
6273 | return 0; | |
6274 | ||
6275 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6276 | return 0; | |
6277 | ||
6278 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6279 | } | |
7c312383 AD |
6280 | |
6281 | /* | |
6282 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6283 | */ | |
5a1ae2c2 | 6284 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6285 | { |
6286 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6287 | ||
6288 | /* | |
6289 | * EVPN RT-5 should not be marked as valid and imported to vrfs if the | |
6290 | * BGP nexthop is not reachable. To check for the nexthop reachability, | |
6291 | * Add nexthop for EVPN RT-5 for nexthop tracking. | |
6292 | * | |
6293 | * Ideally, a BGP route should be marked as valid only if the | |
6294 | * nexthop is reachable. Thus, other EVPN route types also should be | |
6295 | * added here after testing is performed for them. | |
6296 | */ | |
6297 | if (pfx && pfx->family == AF_EVPN && | |
6298 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) | |
6299 | return true; | |
6300 | ||
6301 | return false; | |
6302 | } |