]>
Commit | Line | Data |
---|---|---|
7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 | 33 | |
23d0a753 DA |
34 | #include "lib/printfrr.h" |
35 | ||
7ef5a232 PG |
36 | #include "bgpd/bgp_attr_evpn.h" |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 42 | #include "bgpd/bgp_label.h" |
7ef5a232 | 43 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 44 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 45 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 46 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 47 | #include "bgpd/bgp_encap_types.h" |
48 | #include "bgpd/bgp_debug.h" | |
14454c9f | 49 | #include "bgpd/bgp_errors.h" |
128ea8ab | 50 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 51 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 52 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 53 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 54 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 55 | #include "bgpd/bgp_vty.h" |
a2299aba | 56 | #include "bgpd/bgp_nht.h" |
23aa35ad | 57 | #include "bgpd/bgp_trace.h" |
128ea8ab | 58 | |
59 | /* | |
60 | * Definitions and external declarations. | |
61 | */ | |
96244aca DL |
62 | DEFINE_QOBJ_TYPE(bgpevpn); |
63 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 64 | |
65 | ||
66 | /* | |
67 | * Static function declarations | |
68 | */ | |
021b6596 AD |
69 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *evpn); |
70 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *evpn); | |
71 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
72 | struct bgp_path_info *pi); | |
73 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
74 | struct bgp_path_info *pi); | |
dc6cef73 AD |
75 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
76 | void (*func)(struct hash_bucket *, | |
77 | void *), | |
78 | void *arg); | |
021b6596 AD |
79 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn); |
80 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
81 | struct bgpevpn *vpn); | |
82 | static unsigned int vni_svi_hash_key_make(const void *p); | |
83 | static bool vni_svi_hash_cmp(const void *p1, const void *p2); | |
84 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
85 | struct ipaddr *addr, | |
86 | bool resolve); | |
87 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
88 | void *args); | |
89 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
90 | void *args); | |
9c7edc03 | 91 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 92 | |
93 | /* | |
94 | * Private functions. | |
95 | */ | |
96 | ||
97 | /* | |
98 | * Make vni hash key. | |
99 | */ | |
d8b87afe | 100 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 101 | { |
d8b87afe | 102 | const struct bgpevpn *vpn = p; |
d62a17ae | 103 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 104 | } |
105 | ||
106 | /* | |
107 | * Comparison function for vni hash | |
108 | */ | |
74df8d6d | 109 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 110 | { |
d62a17ae | 111 | const struct bgpevpn *vpn1 = p1; |
112 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 113 | |
ce40c627 | 114 | return vpn1->vni == vpn2->vni; |
14c1a7bf | 115 | } |
116 | ||
c44ab6f1 | 117 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
118 | { |
119 | const struct bgpevpn *vpn1 = p1; | |
120 | const struct bgpevpn *vpn2 = p2; | |
121 | ||
122 | return vpn1->vni - vpn2->vni; | |
123 | } | |
124 | ||
10ebe1ab MK |
125 | /* |
126 | * Make vrf import route target hash key. | |
127 | */ | |
d8b87afe | 128 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 129 | { |
d8b87afe QY |
130 | const struct vrf_irt_node *irt = p; |
131 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
132 | |
133 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
134 | } |
135 | ||
136 | /* | |
137 | * Comparison function for vrf import rt hash | |
138 | */ | |
74df8d6d | 139 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
140 | { |
141 | const struct vrf_irt_node *irt1 = p1; | |
142 | const struct vrf_irt_node *irt2 = p2; | |
143 | ||
10ebe1ab MK |
144 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
145 | } | |
146 | ||
147 | /* | |
f9b8094e | 148 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
149 | */ |
150 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
151 | { | |
5e53dce3 | 152 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
153 | struct vrf_irt_node *irt; |
154 | ||
5e53dce3 T |
155 | bgp_evpn = bgp_get_evpn(); |
156 | if (!bgp_evpn) { | |
e50f7cfd | 157 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 158 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
159 | return NULL; |
160 | } | |
161 | ||
162 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
163 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
164 | |
165 | irt->rt = *rt; | |
166 | irt->vrfs = list_new(); | |
167 | ||
168 | /* Add to hash */ | |
ac390ef8 | 169 | (void)hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern); |
10ebe1ab MK |
170 | |
171 | return irt; | |
172 | } | |
173 | ||
174 | /* | |
175 | * Free the vrf import rt node | |
176 | */ | |
177 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
178 | { | |
5e53dce3 | 179 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 180 | |
5e53dce3 T |
181 | bgp_evpn = bgp_get_evpn(); |
182 | if (!bgp_evpn) { | |
e50f7cfd | 183 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 184 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
185 | return; |
186 | } | |
187 | ||
5e53dce3 | 188 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 189 | list_delete(&irt->vrfs); |
10ebe1ab MK |
190 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
191 | } | |
192 | ||
3727e359 DA |
193 | static void hash_vrf_import_rt_free(struct vrf_irt_node *irt) |
194 | { | |
195 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
196 | } | |
197 | ||
10ebe1ab MK |
198 | /* |
199 | * Function to lookup Import RT node - used to map a RT to set of | |
200 | * VNIs importing routes with that RT. | |
201 | */ | |
202 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
203 | { | |
5e53dce3 | 204 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
205 | struct vrf_irt_node *irt; |
206 | struct vrf_irt_node tmp; | |
207 | ||
5e53dce3 T |
208 | bgp_evpn = bgp_get_evpn(); |
209 | if (!bgp_evpn) { | |
f9b8094e T |
210 | flog_err( |
211 | EC_BGP_NO_DFLT, | |
212 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
213 | return NULL; |
214 | } | |
215 | ||
6006b807 | 216 | memset(&tmp, 0, sizeof(tmp)); |
10ebe1ab | 217 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
5e53dce3 | 218 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
219 | return irt; |
220 | } | |
221 | ||
222 | /* | |
223 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
224 | */ | |
996c9314 | 225 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
226 | { |
227 | struct listnode *node = NULL, *nnode = NULL; | |
228 | struct bgp *tmp_bgp_vrf = NULL; | |
229 | ||
230 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
231 | if (tmp_bgp_vrf == bgp_vrf) | |
232 | return 1; | |
233 | } | |
234 | return 0; | |
235 | } | |
236 | ||
14c1a7bf | 237 | /* |
238 | * Make import route target hash key. | |
239 | */ | |
d8b87afe | 240 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 241 | { |
d8b87afe QY |
242 | const struct irt_node *irt = p; |
243 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
244 | |
245 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 246 | } |
247 | ||
248 | /* | |
249 | * Comparison function for import rt hash | |
250 | */ | |
74df8d6d | 251 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 252 | { |
d62a17ae | 253 | const struct irt_node *irt1 = p1; |
254 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 255 | |
d62a17ae | 256 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 257 | } |
258 | ||
7724c0a1 | 259 | /* |
128ea8ab | 260 | * Create a new import_rt |
261 | */ | |
d62a17ae | 262 | static struct irt_node *import_rt_new(struct bgp *bgp, |
263 | struct ecommunity_val *rt) | |
128ea8ab | 264 | { |
d62a17ae | 265 | struct irt_node *irt; |
128ea8ab | 266 | |
d62a17ae | 267 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 268 | |
d62a17ae | 269 | irt->rt = *rt; |
270 | irt->vnis = list_new(); | |
128ea8ab | 271 | |
d62a17ae | 272 | /* Add to hash */ |
ac390ef8 | 273 | (void)hash_get(bgp->import_rt_hash, irt, hash_alloc_intern); |
128ea8ab | 274 | |
d62a17ae | 275 | return irt; |
128ea8ab | 276 | } |
277 | ||
278 | /* | |
279 | * Free the import rt node | |
7724c0a1 | 280 | */ |
d62a17ae | 281 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 282 | { |
d62a17ae | 283 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 284 | list_delete(&irt->vnis); |
d62a17ae | 285 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 286 | } |
287 | ||
3727e359 DA |
288 | static void hash_import_rt_free(struct irt_node *irt) |
289 | { | |
290 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
291 | } | |
292 | ||
14c1a7bf | 293 | /* |
128ea8ab | 294 | * Function to lookup Import RT node - used to map a RT to set of |
295 | * VNIs importing routes with that RT. | |
296 | */ | |
d62a17ae | 297 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
298 | struct ecommunity_val *rt) | |
128ea8ab | 299 | { |
d62a17ae | 300 | struct irt_node *irt; |
301 | struct irt_node tmp; | |
128ea8ab | 302 | |
6006b807 | 303 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 304 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
305 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
306 | return irt; | |
128ea8ab | 307 | } |
308 | ||
309 | /* | |
310 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
311 | */ | |
d62a17ae | 312 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 313 | { |
d62a17ae | 314 | struct listnode *node, *nnode; |
315 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 316 | |
d62a17ae | 317 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
318 | if (tmp_vpn == vpn) | |
319 | return 1; | |
320 | } | |
128ea8ab | 321 | |
d62a17ae | 322 | return 0; |
128ea8ab | 323 | } |
324 | ||
325 | /* | |
326 | * Compare Route Targets. | |
327 | */ | |
f4a5218d AK |
328 | int bgp_evpn_route_target_cmp(struct ecommunity *ecom1, |
329 | struct ecommunity *ecom2) | |
128ea8ab | 330 | { |
d62a17ae | 331 | if (ecom1 && !ecom2) |
332 | return -1; | |
128ea8ab | 333 | |
d62a17ae | 334 | if (!ecom1 && ecom2) |
335 | return 1; | |
128ea8ab | 336 | |
d62a17ae | 337 | if (!ecom1 && !ecom2) |
338 | return 0; | |
128ea8ab | 339 | |
d62a17ae | 340 | if (ecom1->str && !ecom2->str) |
341 | return -1; | |
128ea8ab | 342 | |
d62a17ae | 343 | if (!ecom1->str && ecom2->str) |
344 | return 1; | |
128ea8ab | 345 | |
d62a17ae | 346 | if (!ecom1->str && !ecom2->str) |
347 | return 0; | |
128ea8ab | 348 | |
d62a17ae | 349 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 350 | } |
351 | ||
f4a5218d | 352 | void bgp_evpn_xxport_delete_ecomm(void *val) |
987d8198 DS |
353 | { |
354 | struct ecommunity *ecomm = val; | |
355 | ecommunity_free(&ecomm); | |
356 | } | |
357 | ||
128ea8ab | 358 | /* |
359 | * Mask off global-admin field of specified extended community (RT), | |
360 | * just retain the local-admin field. | |
361 | */ | |
d62a17ae | 362 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
363 | struct ecommunity_val *src) | |
128ea8ab | 364 | { |
d7c0a89a | 365 | uint8_t type; |
128ea8ab | 366 | |
d62a17ae | 367 | type = src->val[0]; |
368 | dst->val[0] = 0; | |
369 | if (type == ECOMMUNITY_ENCODE_AS) { | |
370 | dst->val[2] = dst->val[3] = 0; | |
371 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
372 | || type == ECOMMUNITY_ENCODE_IP) { | |
373 | dst->val[2] = dst->val[3] = 0; | |
374 | dst->val[4] = dst->val[5] = 0; | |
375 | } | |
128ea8ab | 376 | } |
377 | ||
10ebe1ab MK |
378 | /* |
379 | * Map one RT to specified VRF. | |
380 | * bgp_vrf = BGP vrf instance | |
381 | */ | |
996c9314 | 382 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
383 | { |
384 | struct vrf_irt_node *irt = NULL; | |
385 | struct ecommunity_val eval_tmp; | |
386 | ||
387 | /* If using "automatic" RT, | |
388 | * we only care about the local-admin sub-field. | |
389 | * This is to facilitate using L3VNI(VRF-VNI) | |
390 | * as the RT for EBGP peering too. | |
391 | */ | |
392 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 393 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
394 | mask_ecom_global_admin(&eval_tmp, eval); |
395 | ||
396 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
397 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
398 | /* Already mapped. */ | |
399 | return; | |
10ebe1ab | 400 | |
e066d6d0 | 401 | if (!irt) |
10ebe1ab | 402 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
403 | |
404 | /* Add VRF to the list for this RT. */ | |
405 | listnode_add(irt->vrfs, bgp_vrf); | |
406 | } | |
407 | ||
408 | /* | |
409 | * Unmap specified VRF from specified RT. If there are no other | |
410 | * VRFs for this RT, then the RT hash is deleted. | |
411 | * bgp_vrf: BGP VRF specific instance | |
412 | */ | |
996c9314 | 413 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
414 | { |
415 | /* Delete VRF from list for this RT. */ | |
416 | listnode_delete(irt->vrfs, bgp_vrf); | |
417 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
418 | vrf_import_rt_free(irt); |
419 | } | |
420 | } | |
421 | ||
128ea8ab | 422 | /* |
423 | * Map one RT to specified VNI. | |
14c1a7bf | 424 | */ |
d62a17ae | 425 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
426 | struct ecommunity_val *eval) | |
128ea8ab | 427 | { |
d62a17ae | 428 | struct irt_node *irt; |
429 | struct ecommunity_val eval_tmp; | |
128ea8ab | 430 | |
d62a17ae | 431 | /* If using "automatic" RT, we only care about the local-admin |
432 | * sub-field. | |
433 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
434 | */ | |
435 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
436 | if (!is_import_rt_configured(vpn)) | |
437 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 438 | |
d62a17ae | 439 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 440 | if (irt) |
d62a17ae | 441 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
442 | /* Already mapped. */ | |
443 | return; | |
128ea8ab | 444 | |
879e43a5 | 445 | if (!irt) |
d62a17ae | 446 | irt = import_rt_new(bgp, &eval_tmp); |
128ea8ab | 447 | |
d62a17ae | 448 | /* Add VNI to the hash list for this RT. */ |
449 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 450 | } |
451 | ||
452 | /* | |
453 | * Unmap specified VNI from specified RT. If there are no other | |
454 | * VNIs for this RT, then the RT hash is deleted. | |
455 | */ | |
d62a17ae | 456 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
457 | struct irt_node *irt) | |
14c1a7bf | 458 | { |
d62a17ae | 459 | /* Delete VNI from hash list for this RT. */ |
460 | listnode_delete(irt->vnis, vpn); | |
461 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 462 | import_rt_free(bgp, irt); |
463 | } | |
14c1a7bf | 464 | } |
465 | ||
0ca10580 | 466 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 467 | const struct prefix_evpn *p, |
0ca10580 CS |
468 | struct attr *attr, uint8_t flags) |
469 | { | |
470 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
471 | ||
472 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
473 | if (!bgp_vrf) | |
474 | return; | |
475 | ||
b96cafa3 CS |
476 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
477 | return; | |
478 | ||
479 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
480 | * in case of route is self MAC-IP, | |
481 | * advertise-pip and advertise-svi-ip features | |
482 | * are enabled. | |
483 | * Otherwise, for all host MAC-IP route's | |
27727001 | 484 | * copy anycast RMAC. |
b96cafa3 CS |
485 | */ |
486 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
487 | && bgp_vrf->evpn_info->advertise_pip && | |
488 | bgp_vrf->evpn_info->is_anycast_mac) { | |
489 | /* copy sys rmac */ | |
490 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
491 | ETH_ALEN); | |
492 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
493 | attr->mp_nexthop_global_in = | |
494 | bgp_vrf->evpn_info->pip_ip; | |
495 | } else | |
496 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 497 | } |
b96cafa3 | 498 | |
128ea8ab | 499 | /* |
500 | * Create RT extended community automatically from passed information: | |
501 | * of the form AS:VNI. | |
502 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
503 | * the need is to get a RT value that will be unique across different | |
504 | * VNIs but the same across routers (in the same AS) for a particular | |
505 | * VNI. | |
506 | */ | |
c581d8b0 | 507 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 508 | { |
d62a17ae | 509 | struct ecommunity_val eval; |
b90d4580 CS |
510 | struct ecommunity *ecomadd, *ecom; |
511 | bool ecom_found = false; | |
512 | struct listnode *node; | |
128ea8ab | 513 | |
bf1061d8 VB |
514 | if (bgp->advertise_autort_rfc8365) |
515 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 516 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 517 | |
d62a17ae | 518 | ecomadd = ecommunity_new(); |
1207a5bc | 519 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 | 520 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
d74a6cc1 | 521 | if (ecommunity_cmp(ecomadd, ecom)) { |
b90d4580 | 522 | ecom_found = true; |
d74a6cc1 | 523 | break; |
524 | } | |
b90d4580 CS |
525 | |
526 | if (!ecom_found) | |
527 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
528 | else |
529 | ecommunity_free(&ecomadd); | |
128ea8ab | 530 | } |
14c1a7bf | 531 | |
532 | /* | |
128ea8ab | 533 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
534 | * creation of a VNI. | |
535 | */ | |
d62a17ae | 536 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 537 | { |
d62a17ae | 538 | bgp_evpn_derive_auto_rd(bgp, vpn); |
539 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
540 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 541 | } |
542 | ||
1ec31309 | 543 | /* |
544 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
545 | */ | |
546 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
547 | { | |
548 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
549 | return; | |
550 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
551 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
552 | } | |
553 | ||
34c7f35f SW |
554 | /* |
555 | * Wrapper for node get in global table. | |
556 | */ | |
557 | struct bgp_dest *bgp_evpn_global_node_get(struct bgp_table *table, afi_t afi, | |
09319b4e DS |
558 | safi_t safi, |
559 | const struct prefix_evpn *evp, | |
34c7f35f SW |
560 | struct prefix_rd *prd, |
561 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
562 | { |
563 | struct prefix_evpn global_p; | |
564 | ||
565 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
566 | /* prefix in the global table doesn't include the VTEP-IP so | |
567 | * we need to create a different copy of the prefix | |
568 | */ | |
569 | evpn_type1_prefix_global_copy(&global_p, evp); | |
570 | evp = &global_p; | |
34c7f35f SW |
571 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
572 | local_pi) { | |
573 | /* | |
852d9f97 SW |
574 | * prefix in the global table needs MAC/IP, ensure they are |
575 | * present, using one's from local table's path_info. | |
34c7f35f | 576 | */ |
852d9f97 SW |
577 | if (is_evpn_prefix_ipaddr_none(evp)) { |
578 | /* VNI MAC -> Global */ | |
579 | evpn_type2_prefix_global_copy( | |
580 | &global_p, evp, NULL /* mac */, | |
581 | evpn_type2_path_info_get_ip(local_pi)); | |
582 | } else { | |
583 | /* VNI IP -> Global */ | |
584 | evpn_type2_prefix_global_copy( | |
585 | &global_p, evp, | |
586 | evpn_type2_path_info_get_mac(local_pi), | |
587 | NULL /* ip */); | |
588 | } | |
589 | ||
34c7f35f | 590 | evp = &global_p; |
c44ab6f1 AK |
591 | } |
592 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
593 | } | |
594 | ||
34c7f35f SW |
595 | /* |
596 | * Wrapper for node lookup in global table. | |
597 | */ | |
598 | struct bgp_dest * | |
599 | bgp_evpn_global_node_lookup(struct bgp_table *table, afi_t afi, safi_t safi, | |
600 | const struct prefix_evpn *evp, | |
601 | struct prefix_rd *prd, | |
602 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
603 | { |
604 | struct prefix_evpn global_p; | |
605 | ||
606 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
607 | /* prefix in the global table doesn't include the VTEP-IP so | |
608 | * we need to create a different copy of the prefix | |
609 | */ | |
610 | evpn_type1_prefix_global_copy(&global_p, evp); | |
611 | evp = &global_p; | |
34c7f35f SW |
612 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
613 | local_pi) { | |
614 | /* | |
852d9f97 SW |
615 | * prefix in the global table needs MAC/IP, ensure they are |
616 | * present, using one's from local table's path_info. | |
34c7f35f | 617 | */ |
852d9f97 SW |
618 | if (is_evpn_prefix_ipaddr_none(evp)) { |
619 | /* VNI MAC -> Global */ | |
620 | evpn_type2_prefix_global_copy( | |
621 | &global_p, evp, NULL /* mac */, | |
622 | evpn_type2_path_info_get_ip(local_pi)); | |
623 | } else { | |
624 | /* VNI IP -> Global */ | |
625 | evpn_type2_prefix_global_copy( | |
626 | &global_p, evp, | |
627 | evpn_type2_path_info_get_mac(local_pi), | |
628 | NULL /* ip */); | |
629 | } | |
630 | ||
34c7f35f | 631 | evp = &global_p; |
c44ab6f1 AK |
632 | } |
633 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
634 | } | |
635 | ||
34c7f35f | 636 | /* |
852d9f97 | 637 | * Wrapper for node get in VNI IP table. |
34c7f35f | 638 | */ |
852d9f97 SW |
639 | struct bgp_dest *bgp_evpn_vni_ip_node_get(struct bgp_table *const table, |
640 | const struct prefix_evpn *evp, | |
641 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
642 | { |
643 | struct prefix_evpn vni_p; | |
644 | ||
645 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
646 | /* prefix in the global table doesn't include the VTEP-IP so | |
647 | * we need to create a different copy for the VNI | |
648 | */ | |
852d9f97 SW |
649 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
650 | parent_pi->attr->nexthop); | |
34c7f35f | 651 | evp = &vni_p; |
852d9f97 SW |
652 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
653 | /* Only MAC-IP should go into this table, not mac-only */ | |
654 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
655 | ||
34c7f35f | 656 | /* |
852d9f97 | 657 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 658 | * we need to create a different copy of the prefix. |
34c7f35f | 659 | */ |
852d9f97 | 660 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
661 | evp = &vni_p; |
662 | } | |
663 | return bgp_node_get(table, (struct prefix *)evp); | |
664 | } | |
665 | ||
666 | /* | |
852d9f97 | 667 | * Wrapper for node lookup in VNI IP table. |
34c7f35f | 668 | */ |
852d9f97 SW |
669 | struct bgp_dest * |
670 | bgp_evpn_vni_ip_node_lookup(const struct bgp_table *const table, | |
671 | const struct prefix_evpn *evp, | |
672 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
673 | { |
674 | struct prefix_evpn vni_p; | |
675 | ||
676 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
677 | /* prefix in the global table doesn't include the VTEP-IP so | |
678 | * we need to create a different copy for the VNI | |
679 | */ | |
852d9f97 SW |
680 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
681 | parent_pi->attr->nexthop); | |
34c7f35f | 682 | evp = &vni_p; |
852d9f97 SW |
683 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
684 | /* Only MAC-IP should go into this table, not mac-only */ | |
685 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
686 | ||
34c7f35f | 687 | /* |
852d9f97 | 688 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 689 | * we need to create a different copy of the prefix. |
34c7f35f | 690 | */ |
852d9f97 | 691 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
692 | evp = &vni_p; |
693 | } | |
694 | return bgp_node_lookup(table, (struct prefix *)evp); | |
695 | } | |
696 | ||
852d9f97 SW |
697 | /* |
698 | * Wrapper for node get in VNI MAC table. | |
699 | */ | |
700 | struct bgp_dest * | |
701 | bgp_evpn_vni_mac_node_get(struct bgp_table *const table, | |
702 | const struct prefix_evpn *evp, | |
703 | const struct bgp_path_info *parent_pi) | |
704 | { | |
705 | struct prefix_evpn vni_p; | |
706 | ||
707 | /* Only type-2 should ever go into this table */ | |
708 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
709 | ||
710 | /* | |
711 | * prefix in the vni MAC table doesn't include IP so | |
712 | * we need to create a different copy of the prefix. | |
713 | */ | |
714 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
715 | evp = &vni_p; | |
716 | return bgp_node_get(table, (struct prefix *)evp); | |
717 | } | |
718 | ||
719 | /* | |
720 | * Wrapper for node lookup in VNI MAC table. | |
721 | */ | |
722 | struct bgp_dest * | |
723 | bgp_evpn_vni_mac_node_lookup(const struct bgp_table *const table, | |
724 | const struct prefix_evpn *evp, | |
725 | const struct bgp_path_info *parent_pi) | |
726 | { | |
727 | struct prefix_evpn vni_p; | |
728 | ||
729 | /* Only type-2 should ever go into this table */ | |
730 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
731 | ||
732 | /* | |
733 | * prefix in the vni MAC table doesn't include IP so | |
734 | * we need to create a different copy of the prefix. | |
735 | */ | |
736 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
737 | evp = &vni_p; | |
738 | return bgp_node_lookup(table, (struct prefix *)evp); | |
739 | } | |
740 | ||
741 | /* | |
742 | * Wrapper for node get in both VNI tables. | |
743 | */ | |
744 | struct bgp_dest *bgp_evpn_vni_node_get(struct bgpevpn *vpn, | |
745 | const struct prefix_evpn *p, | |
746 | const struct bgp_path_info *parent_pi) | |
747 | { | |
748 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
749 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
750 | return bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
751 | ||
752 | return bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
753 | } | |
754 | ||
755 | /* | |
756 | * Wrapper for node lookup in both VNI tables. | |
757 | */ | |
758 | struct bgp_dest *bgp_evpn_vni_node_lookup(const struct bgpevpn *vpn, | |
759 | const struct prefix_evpn *p, | |
760 | const struct bgp_path_info *parent_pi) | |
761 | { | |
762 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
763 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
764 | return bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, | |
765 | parent_pi); | |
766 | ||
767 | return bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
768 | } | |
769 | ||
128ea8ab | 770 | /* |
771 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 772 | */ |
d62a17ae | 773 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 774 | const struct prefix_evpn *p, |
34c7f35f | 775 | const struct ethaddr *mac, |
d62a17ae | 776 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 777 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 778 | { |
779 | struct stream *s; | |
0ffd0fb5 | 780 | uint16_t ipa_len; |
c44ab6f1 | 781 | static struct in_addr zero_remote_vtep_ip; |
90f30caa | 782 | bool esi_valid; |
d62a17ae | 783 | |
784 | /* Check socket. */ | |
785 | if (!zclient || zclient->sock < 0) | |
786 | return 0; | |
787 | ||
788 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
789 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
790 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
791 | zlog_debug( |
792 | "%s: No zebra instance to talk to, not installing remote macip", | |
793 | __func__); | |
d62a17ae | 794 | return 0; |
bb4ef1ae | 795 | } |
c44ab6f1 AK |
796 | |
797 | if (!esi) | |
798 | esi = zero_esi; | |
d62a17ae | 799 | s = zclient->obuf; |
800 | stream_reset(s); | |
801 | ||
996c9314 LB |
802 | zclient_create_header( |
803 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
804 | bgp->vrf_id); | |
d62a17ae | 805 | stream_putl(s, vpn->vni); |
34c7f35f SW |
806 | |
807 | if (mac) /* Mac Addr */ | |
808 | stream_put(s, &mac->octet, ETH_ALEN); | |
809 | else | |
810 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); | |
811 | ||
d62a17ae | 812 | /* IP address length and IP address, if any. */ |
3714a385 | 813 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 814 | stream_putw(s, 0); |
d62a17ae | 815 | else { |
3714a385 | 816 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 817 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 818 | stream_putw(s, ipa_len); |
3714a385 | 819 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 820 | } |
9c7edc03 AK |
821 | /* If the ESI is valid that becomes the nexthop; tape out the |
822 | * VTEP-IP for that case | |
c44ab6f1 | 823 | */ |
90f30caa AK |
824 | if (bgp_evpn_is_esi_valid(esi)) { |
825 | esi_valid = true; | |
c44ab6f1 | 826 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
90f30caa AK |
827 | } else { |
828 | esi_valid = false; | |
9c7edc03 | 829 | stream_put_in_addr(s, &remote_vtep_ip); |
90f30caa | 830 | } |
d62a17ae | 831 | |
ead40654 | 832 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 833 | /* Also TX the sequence number of the best route. */ |
834 | if (add) { | |
ead40654 | 835 | stream_putc(s, flags); |
f07e1c99 | 836 | stream_putl(s, seq); |
c44ab6f1 | 837 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 838 | } |
d62a17ae | 839 | |
840 | stream_putw_at(s, 0, stream_get_endp(s)); | |
841 | ||
90f30caa AK |
842 | if (bgp_debug_zebra(NULL)) { |
843 | char esi_buf[ESI_STR_LEN]; | |
844 | ||
845 | if (esi_valid) | |
846 | esi_to_str(esi, esi_buf, sizeof(esi_buf)); | |
847 | else | |
848 | snprintf(esi_buf, sizeof(esi_buf), "-"); | |
996c9314 | 849 | zlog_debug( |
90f30caa | 850 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4 esi %s", |
996c9314 | 851 | add ? "ADD" : "DEL", vpn->vni, |
852d9f97 SW |
852 | (mac ? mac : &p->prefix.macip_addr.mac), |
853 | &p->prefix.macip_addr.ip, flags, seq, &remote_vtep_ip, | |
854 | esi_buf); | |
90f30caa | 855 | } |
d62a17ae | 856 | |
23aa35ad AK |
857 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
858 | esi); | |
859 | ||
d62a17ae | 860 | return zclient_send_message(zclient); |
7ef5a232 | 861 | } |
b18825eb | 862 | |
128ea8ab | 863 | /* |
864 | * Add (update) or delete remote VTEP from zebra. | |
865 | */ | |
d62a17ae | 866 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
867 | const struct prefix_evpn *p, |
868 | int flood_control, int add) | |
128ea8ab | 869 | { |
d62a17ae | 870 | struct stream *s; |
128ea8ab | 871 | |
d62a17ae | 872 | /* Check socket. */ |
873 | if (!zclient || zclient->sock < 0) | |
874 | return 0; | |
128ea8ab | 875 | |
d62a17ae | 876 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
877 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
878 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
879 | zlog_debug( |
880 | "%s: No zebra instance to talk to, not installing remote vtep", | |
881 | __func__); | |
d62a17ae | 882 | return 0; |
bb4ef1ae | 883 | } |
128ea8ab | 884 | |
d62a17ae | 885 | s = zclient->obuf; |
886 | stream_reset(s); | |
128ea8ab | 887 | |
996c9314 LB |
888 | zclient_create_header( |
889 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
890 | bgp->vrf_id); | |
d62a17ae | 891 | stream_putl(s, vpn->vni); |
3714a385 | 892 | if (is_evpn_prefix_ipaddr_v4(p)) |
893 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
894 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 895 | flog_err( |
e50f7cfd | 896 | EC_BGP_VTEP_INVALID, |
d62a17ae | 897 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
898 | add ? "ADD" : "DEL", vpn->vni); | |
899 | return -1; | |
900 | } | |
b16dd019 | 901 | stream_putl(s, flood_control); |
128ea8ab | 902 | |
d62a17ae | 903 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 904 | |
d62a17ae | 905 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 906 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 907 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 908 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 909 | |
23aa35ad AK |
910 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
911 | ||
d62a17ae | 912 | return zclient_send_message(zclient); |
128ea8ab | 913 | } |
914 | ||
342dd0c6 | 915 | /* |
916 | * Build extended communities for EVPN prefix route. | |
917 | */ | |
918 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
919 | struct attr *attr) | |
920 | { | |
921 | struct ecommunity ecom_encap; | |
342dd0c6 | 922 | struct ecommunity_val eval; |
923 | struct ecommunity_val eval_rmac; | |
924 | bgp_encap_types tnl_type; | |
925 | struct listnode *node, *nnode; | |
926 | struct ecommunity *ecom; | |
fab92da7 | 927 | struct ecommunity *old_ecom; |
342dd0c6 | 928 | struct list *vrf_export_rtl = NULL; |
929 | ||
930 | /* Encap */ | |
931 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
932 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
933 | encode_encap_extcomm(tnl_type, &eval); | |
934 | ecom_encap.size = 1; | |
34540b0d | 935 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 936 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 937 | |
938 | /* Add Encap */ | |
b53e67a3 DA |
939 | if (bgp_attr_get_ecommunity(attr)) { |
940 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 941 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
942 | if (!old_ecom->refcnt) | |
943 | ecommunity_free(&old_ecom); | |
944 | } else | |
945 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 946 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 947 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 948 | |
949 | /* Add the export RTs for L3VNI/VRF */ | |
950 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f | 951 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
952 | bgp_attr_set_ecommunity( |
953 | attr, | |
954 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
342dd0c6 | 955 | |
956 | /* add the router mac extended community */ | |
957 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 958 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
959 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
960 | true, true); | |
342dd0c6 | 961 | } |
342dd0c6 | 962 | } |
963 | ||
128ea8ab | 964 | /* |
1ec31309 | 965 | * Build extended communities for EVPN route. |
966 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
967 | * and ENCAP extended communities are applicable for all routes. | |
968 | * The default gateway extended community and MAC mobility (sticky) extended | |
969 | * community are added as needed based on passed settings - only for type-2 | |
970 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
971 | * added, if present, based on passed settings - only for non-link-local | |
972 | * type-2 routes. | |
128ea8ab | 973 | */ |
7ec156a9 | 974 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 975 | int add_l3_ecomm) |
128ea8ab | 976 | { |
d62a17ae | 977 | struct ecommunity ecom_encap; |
978 | struct ecommunity ecom_sticky; | |
ead40654 | 979 | struct ecommunity ecom_default_gw; |
68e33151 | 980 | struct ecommunity ecom_na; |
d62a17ae | 981 | struct ecommunity_val eval; |
982 | struct ecommunity_val eval_sticky; | |
ead40654 | 983 | struct ecommunity_val eval_default_gw; |
bc59a672 | 984 | struct ecommunity_val eval_rmac; |
68e33151 | 985 | struct ecommunity_val eval_na; |
9c7edc03 | 986 | bool proxy; |
68e33151 | 987 | |
d62a17ae | 988 | bgp_encap_types tnl_type; |
989 | struct listnode *node, *nnode; | |
990 | struct ecommunity *ecom; | |
d7c0a89a | 991 | uint32_t seqnum; |
7a3e76f1 | 992 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 993 | |
d62a17ae | 994 | /* Encap */ |
995 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
996 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
997 | encode_encap_extcomm(tnl_type, &eval); | |
998 | ecom_encap.size = 1; | |
34540b0d | 999 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1000 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 1001 | |
d62a17ae | 1002 | /* Add Encap */ |
b53e67a3 | 1003 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 1004 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 1005 | |
7a3e76f1 | 1006 | /* Add the export RTs for L2VNI */ |
d62a17ae | 1007 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
1008 | bgp_attr_set_ecommunity( |
1009 | attr, | |
1010 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 1011 | |
1ec31309 | 1012 | /* Add the export RTs for L3VNI if told to - caller determines |
1013 | * when this should be done. | |
523cafc4 | 1014 | */ |
1ec31309 | 1015 | if (add_l3_ecomm) { |
7ec156a9 MK |
1016 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
1017 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
1018 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
1019 | ecom)) | |
b53e67a3 DA |
1020 | bgp_attr_set_ecommunity( |
1021 | attr, | |
1022 | ecommunity_merge( | |
1023 | bgp_attr_get_ecommunity(attr), | |
1024 | ecom)); | |
7ec156a9 | 1025 | } |
f1f8b53c | 1026 | } |
7a3e76f1 | 1027 | |
1ec31309 | 1028 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 1029 | if (attr->sticky) { |
1030 | seqnum = 0; | |
1031 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
1032 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
1033 | ecom_sticky.size = 1; | |
34540b0d | 1034 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1035 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
1036 | bgp_attr_set_ecommunity( |
1037 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1038 | &ecom_sticky)); | |
d62a17ae | 1039 | } |
c85c03c7 | 1040 | |
1ec31309 | 1041 | /* Add RMAC, if told to. */ |
1042 | if (add_l3_ecomm) { | |
bc59a672 | 1043 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1044 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1045 | true, true); | |
bc59a672 MK |
1046 | } |
1047 | ||
1ec31309 | 1048 | /* Add default gateway, if needed. */ |
ead40654 MK |
1049 | if (attr->default_gw) { |
1050 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
1051 | encode_default_gw_extcomm(&eval_default_gw); | |
1052 | ecom_default_gw.size = 1; | |
34540b0d | 1053 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 1054 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
1055 | bgp_attr_set_ecommunity( |
1056 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1057 | &ecom_default_gw)); | |
ead40654 MK |
1058 | } |
1059 | ||
9c7edc03 AK |
1060 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
1061 | if (attr->router_flag || proxy) { | |
68e33151 | 1062 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 1063 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 1064 | ecom_na.size = 1; |
34540b0d | 1065 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 1066 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
1067 | bgp_attr_set_ecommunity( |
1068 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1069 | &ecom_na)); | |
68e33151 | 1070 | } |
128ea8ab | 1071 | } |
1072 | ||
1073 | /* | |
1074 | * Add MAC mobility extended community to attribute. | |
1075 | */ | |
d7c0a89a | 1076 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 1077 | { |
1078 | struct ecommunity ecom_tmp; | |
1079 | struct ecommunity_val eval; | |
d7c0a89a | 1080 | uint8_t *ecom_val_ptr; |
f6e07e1b | 1081 | uint32_t i; |
d7c0a89a | 1082 | uint8_t *pnt; |
d62a17ae | 1083 | int type = 0; |
1084 | int sub_type = 0; | |
b53e67a3 | 1085 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 1086 | |
1087 | /* Build MM */ | |
1088 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
1089 | ||
1090 | /* Find current MM ecommunity */ | |
421bb26a | 1091 | ecom_val_ptr = NULL; |
d62a17ae | 1092 | |
b53e67a3 DA |
1093 | if (ecomm) { |
1094 | for (i = 0; i < ecomm->size; i++) { | |
1095 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 1096 | type = *pnt++; |
1097 | sub_type = *pnt++; | |
1098 | ||
1099 | if (type == ECOMMUNITY_ENCODE_EVPN | |
1100 | && sub_type | |
1101 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 1102 | ecom_val_ptr = |
b53e67a3 | 1103 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 1104 | break; |
1105 | } | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /* Update the existing MM ecommunity */ | |
421bb26a | 1110 | if (ecom_val_ptr) { |
b53e67a3 | 1111 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 1112 | } |
1113 | /* Add MM to existing */ | |
1114 | else { | |
1115 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
1116 | ecom_tmp.size = 1; | |
34540b0d | 1117 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1118 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 1119 | |
b53e67a3 DA |
1120 | if (ecomm) |
1121 | bgp_attr_set_ecommunity( | |
1122 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 1123 | else |
b53e67a3 DA |
1124 | bgp_attr_set_ecommunity(attr, |
1125 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 1126 | } |
128ea8ab | 1127 | } |
1128 | ||
1129 | /* Install EVPN route into zebra. */ | |
d62a17ae | 1130 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
1131 | const struct prefix_evpn *p, |
1132 | struct bgp_path_info *pi) | |
128ea8ab | 1133 | { |
d62a17ae | 1134 | int ret; |
d594a14c | 1135 | uint8_t flags; |
b16dd019 | 1136 | int flood_control; |
9c7edc03 | 1137 | uint32_t seq; |
128ea8ab | 1138 | |
d594a14c AK |
1139 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1140 | flags = 0; | |
9c7edc03 AK |
1141 | |
1142 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
1143 | if (pi->attr->sticky) | |
1144 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1145 | if (pi->attr->default_gw) | |
1146 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
1147 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1148 | pi->attr->router_flag) | |
1149 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1150 | ||
1151 | seq = mac_mobility_seqnum(pi->attr); | |
1152 | /* if local ES notify zebra that this is a sync path */ | |
1153 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
1154 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1155 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
1156 | SET_FLAG(flags, | |
1157 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1158 | } | |
1159 | } else { | |
1160 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
1161 | return 0; | |
1162 | ||
1163 | /* if a local path is being turned around and sent | |
1164 | * to zebra it is because it is a sync path on | |
1165 | * a local ES | |
1166 | */ | |
1167 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1168 | /* supply the highest peer seq number to zebra | |
1169 | * for MM seq syncing | |
1170 | */ | |
1171 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
1172 | /* if any of the paths from the peer have the ROUTER | |
1173 | * flag set install the local entry as a router entry | |
1174 | */ | |
1175 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1176 | (pi->attr->es_flags & | |
1177 | ATTR_ES_PEER_ROUTER)) | |
1178 | SET_FLAG(flags, | |
1179 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1180 | ||
1181 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
1182 | SET_FLAG(flags, | |
1183 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1184 | } | |
1185 | ||
d594a14c | 1186 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1187 | bgp, vpn, p, |
1188 | (is_evpn_prefix_ipaddr_none(p) | |
1189 | ? NULL /* MAC update */ | |
1190 | : evpn_type2_path_info_get_mac( | |
1191 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1192 | pi->attr->nexthop, 1, flags, seq, |
1193 | bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
1194 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
1195 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 1196 | } else { |
2a3f51cf | 1197 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
1198 | case PMSI_TNLTYPE_INGR_REPL: |
1199 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
1200 | break; | |
1201 | ||
1202 | case PMSI_TNLTYPE_PIM_SM: | |
1203 | flood_control = VXLAN_FLOOD_PIM_SM; | |
1204 | break; | |
1205 | ||
1206 | default: | |
1207 | flood_control = VXLAN_FLOOD_DISABLED; | |
1208 | break; | |
1209 | } | |
1210 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1211 | } |
128ea8ab | 1212 | |
d62a17ae | 1213 | return ret; |
128ea8ab | 1214 | } |
1215 | ||
1216 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1217 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1218 | const struct prefix_evpn *p, |
34c7f35f | 1219 | struct bgp_path_info *pi, bool is_sync) |
128ea8ab | 1220 | { |
d62a17ae | 1221 | int ret; |
128ea8ab | 1222 | |
d62a17ae | 1223 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
34c7f35f | 1224 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1225 | bgp, vpn, p, |
1226 | (is_evpn_prefix_ipaddr_none(p) | |
1227 | ? NULL /* MAC update */ | |
1228 | : evpn_type2_path_info_get_mac( | |
1229 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1230 | (is_sync ? zero_vtep_ip : pi->attr->nexthop), 0, 0, 0, |
1231 | NULL); | |
c44ab6f1 AK |
1232 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) |
1233 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1234 | else |
b16dd019 AK |
1235 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1236 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1237 | |
d62a17ae | 1238 | return ret; |
128ea8ab | 1239 | } |
1240 | ||
1241 | /* | |
1242 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1243 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1244 | * from peers. | |
1245 | */ | |
d62a17ae | 1246 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1247 | struct bgp_dest *dest, |
9c7edc03 AK |
1248 | struct bgp_path_info *old_local, |
1249 | struct bgp_path_info *new_select) | |
128ea8ab | 1250 | { |
9bcb3eef | 1251 | struct bgp_dest *global_dest; |
40381db7 | 1252 | struct bgp_path_info *pi; |
d62a17ae | 1253 | afi_t afi = AFI_L2VPN; |
1254 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1255 | |
9c7edc03 | 1256 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1257 | char esi_buf[ESI_STR_LEN]; |
1258 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1259 | struct prefix_evpn *evp = |
1260 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1261 | |
2dbe669b DA |
1262 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1263 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1264 | sizeof(esi_buf)), | |
1265 | new_select ? esi_to_str(&new_select->attr->esi, | |
1266 | esi_buf2, sizeof(esi_buf2)) | |
1267 | : ""); | |
9c7edc03 AK |
1268 | } |
1269 | ||
d62a17ae | 1270 | /* Locate route node in the global EVPN routing table. Note that |
1271 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1272 | * L3VPN routes. | |
1273 | */ | |
34c7f35f SW |
1274 | global_dest = bgp_evpn_global_node_lookup( |
1275 | bgp->rib[afi][safi], afi, safi, | |
1276 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1277 | &vpn->prd, old_local); | |
9bcb3eef | 1278 | if (global_dest) { |
d62a17ae | 1279 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1280 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1281 | |
d62a17ae | 1282 | /* Schedule for processing - withdraws to peers happen from |
1283 | * this table. | |
1284 | */ | |
40381db7 | 1285 | if (pi) |
9bcb3eef DS |
1286 | bgp_process(bgp, global_dest, afi, safi); |
1287 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1288 | } |
128ea8ab | 1289 | |
d62a17ae | 1290 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1291 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1292 | } |
1293 | ||
1294 | /* | |
1295 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1296 | * if appropriate. | |
c44ab6f1 | 1297 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1298 | */ |
c44ab6f1 | 1299 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1300 | struct bgp_dest *dest) |
d62a17ae | 1301 | { |
4b7e6066 DS |
1302 | struct bgp_path_info *old_select, *new_select; |
1303 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1304 | afi_t afi = AFI_L2VPN; |
1305 | safi_t safi = SAFI_EVPN; | |
1306 | int ret = 0; | |
1307 | ||
1308 | /* Compute the best path. */ | |
9bcb3eef | 1309 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1310 | afi, safi); |
1311 | old_select = old_and_new.old; | |
1312 | new_select = old_and_new.new; | |
1313 | ||
1314 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1315 | * update to zebra RIB. |
1316 | * Remote routes and SYNC route (i.e. local routes with | |
1317 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1318 | * change. | |
d62a17ae | 1319 | */ |
1320 | if (old_select && old_select == new_select | |
1321 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1322 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1323 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1324 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1325 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1326 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1327 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1328 | ret = evpn_zebra_install( |
9bcb3eef DS |
1329 | bgp, vpn, |
1330 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1331 | dest), | |
d594a14c | 1332 | old_select); |
1defdda8 | 1333 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1334 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1335 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1336 | return ret; |
1337 | } | |
1338 | ||
1339 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1340 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1341 | |
1342 | /* bestpath has changed; update relevant fields and install or uninstall | |
1343 | * into the zebra RIB. | |
1344 | */ | |
1345 | if (old_select || new_select) | |
9bcb3eef | 1346 | bgp_bump_version(dest); |
d62a17ae | 1347 | |
1348 | if (old_select) | |
9bcb3eef | 1349 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1350 | if (new_select) { |
9bcb3eef DS |
1351 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1352 | bgp_path_info_unset_flag(dest, new_select, | |
1353 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1354 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1355 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1356 | } |
1357 | ||
9c7edc03 AK |
1358 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1359 | * to zebra | |
1360 | */ | |
d62a17ae | 1361 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1362 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1363 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1364 | ret = evpn_zebra_install( |
9bcb3eef DS |
1365 | bgp, vpn, |
1366 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1367 | new_select); |
d594a14c | 1368 | |
d62a17ae | 1369 | /* If an old best existed and it was a "local" route, the only |
1370 | * reason | |
1371 | * it would be supplanted is due to MAC mobility procedures. So, | |
1372 | * we | |
1373 | * need to do an implicit delete and withdraw that route from | |
1374 | * peers. | |
1375 | */ | |
9c7edc03 AK |
1376 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1377 | old_select && old_select->peer == bgp->peer_self | |
1378 | && old_select->type == ZEBRA_ROUTE_BGP | |
1379 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1380 | && vpn) | |
1381 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1382 | old_select, new_select); | |
d62a17ae | 1383 | } else { |
1384 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1385 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1386 | ret = evpn_zebra_uninstall( |
1387 | bgp, vpn, | |
9bcb3eef DS |
1388 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1389 | dest), | |
34c7f35f | 1390 | old_select, false); |
d62a17ae | 1391 | } |
1392 | ||
1393 | /* Clear any route change flags. */ | |
9bcb3eef | 1394 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1395 | |
18ee8310 | 1396 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1397 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1398 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1399 | |
1400 | return ret; | |
128ea8ab | 1401 | } |
1402 | ||
9c7edc03 AK |
1403 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1404 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1405 | { |
40381db7 | 1406 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1407 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1408 | |
9bcb3eef | 1409 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1410 | tmp_pi = tmp_pi->next) { |
1411 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1412 | local_pi = tmp_pi; |
9c7edc03 AK |
1413 | break; |
1414 | } | |
d62a17ae | 1415 | } |
c85c03c7 | 1416 | |
9c7edc03 | 1417 | return local_pi; |
c85c03c7 | 1418 | } |
1419 | ||
5e53dce3 | 1420 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1421 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1422 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1423 | struct attr *attr, int *route_changed) |
342dd0c6 | 1424 | { |
1425 | struct attr *attr_new = NULL; | |
40381db7 | 1426 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1427 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1428 | struct bgp_path_info *local_pi = NULL; |
1429 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1430 | |
5424b7ba | 1431 | *route_changed = 0; |
342dd0c6 | 1432 | /* locate the local route entry if any */ |
9bcb3eef | 1433 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1434 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1435 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1436 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1437 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1438 | local_pi = tmp_pi; | |
342dd0c6 | 1439 | } |
1440 | ||
2bb9eff4 | 1441 | /* |
0437e105 | 1442 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1443 | * Otherwise see if route attr has changed |
523cafc4 | 1444 | */ |
40381db7 | 1445 | if (!local_pi) { |
342dd0c6 | 1446 | |
5424b7ba MK |
1447 | /* route has changed as this is the first entry */ |
1448 | *route_changed = 1; | |
1449 | ||
342dd0c6 | 1450 | /* Add (or update) attribute to hash. */ |
1451 | attr_new = bgp_attr_intern(attr); | |
1452 | ||
1453 | /* create the route info from attribute */ | |
40381db7 | 1454 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1455 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1456 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1457 | |
b57ba6d2 | 1458 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1459 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1460 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1461 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1462 | pi->extra->num_labels = 1; | |
342dd0c6 | 1463 | |
1464 | /* add the route entry to route node*/ | |
9bcb3eef | 1465 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1466 | } else { |
1467 | ||
40381db7 DS |
1468 | tmp_pi = local_pi; |
1469 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1470 | |
1471 | /* attribute changed */ | |
1472 | *route_changed = 1; | |
1473 | ||
342dd0c6 | 1474 | /* The attribute has changed. */ |
1475 | /* Add (or update) attribute to hash. */ | |
1476 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1477 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1478 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1479 | |
1480 | /* Restore route, if needed. */ | |
40381db7 | 1481 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1482 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1483 | |
1484 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1485 | bgp_attr_unintern(&tmp_pi->attr); |
1486 | tmp_pi->attr = attr_new; | |
083ec940 | 1487 | tmp_pi->uptime = monotime(NULL); |
342dd0c6 | 1488 | } |
1489 | } | |
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | /* update evpn type-5 route entry */ | |
996c9314 | 1494 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1495 | struct attr *src_attr, afi_t src_afi, |
1496 | safi_t src_safi) | |
342dd0c6 | 1497 | { |
1498 | afi_t afi = AFI_L2VPN; | |
1499 | safi_t safi = SAFI_EVPN; | |
1500 | struct attr attr; | |
9bcb3eef | 1501 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1502 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1503 | int route_changed = 0; |
342dd0c6 | 1504 | |
5e53dce3 T |
1505 | bgp_evpn = bgp_get_evpn(); |
1506 | if (!bgp_evpn) | |
faafdfa8 | 1507 | return 0; |
342dd0c6 | 1508 | |
2f69f6d3 | 1509 | /* Build path attribute for this route - use the source attr, if |
1510 | * present, else treat as locally originated. | |
1511 | */ | |
1512 | if (src_attr) | |
6f4f49b2 | 1513 | attr = *src_attr; |
2f69f6d3 | 1514 | else { |
6006b807 | 1515 | memset(&attr, 0, sizeof(attr)); |
0f05ea43 | 1516 | bgp_attr_default_set(&attr, bgp_vrf, BGP_ORIGIN_IGP); |
2f69f6d3 | 1517 | } |
5394a276 | 1518 | |
5394a276 CS |
1519 | /* Advertise Primary IP (PIP) is enabled, send individual |
1520 | * IP (default instance router-id) as nexthop. | |
1521 | * PIP is disabled or vrr interface is not present | |
27727001 | 1522 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1523 | */ |
1524 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1525 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1526 | attr.nexthop = bgp_vrf->originator_ip; | |
1527 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1528 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1529 | } else { |
27727001 CS |
1530 | /* copy sys rmac */ |
1531 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1532 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1533 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1534 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1535 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1536 | if (bgp_debug_zebra(NULL)) |
1537 | zlog_debug( | |
1538 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1539 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1540 | } |
1541 | ||
c0d72166 DS |
1542 | if (bgp_debug_zebra(NULL)) |
1543 | zlog_debug( | |
1544 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1545 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1546 | &attr.nexthop); | |
5394a276 | 1547 | |
342dd0c6 | 1548 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1549 | |
6c995628 AD |
1550 | if (src_afi == AFI_IP6 && |
1551 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1552 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1553 | if (src_attr && | |
1554 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1555 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1556 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1557 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1558 | &src_attr->mp_nexthop_global, |
1559 | sizeof(struct in6_addr)); | |
1560 | } | |
1561 | } else if (src_afi == AFI_IP && | |
1562 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1563 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1564 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1565 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1566 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1567 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1568 | &src_attr->nexthop, sizeof(struct in_addr)); |
1569 | } | |
1570 | } | |
1571 | ||
342dd0c6 | 1572 | /* Setup RT and encap extended community */ |
1573 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1574 | ||
1575 | /* get the route node in global table */ | |
34c7f35f SW |
1576 | dest = bgp_evpn_global_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1577 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 1578 | assert(dest); |
342dd0c6 | 1579 | |
1580 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1581 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1582 | &route_changed); |
342dd0c6 | 1583 | |
1584 | /* schedule for processing and unlock node */ | |
5424b7ba | 1585 | if (route_changed) { |
9bcb3eef DS |
1586 | bgp_process(bgp_evpn, dest, afi, safi); |
1587 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1588 | } |
342dd0c6 | 1589 | |
1590 | /* uninten temporary */ | |
5ee65f6f | 1591 | if (!src_attr) |
1592 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1593 | return 0; |
1594 | } | |
1595 | ||
9c7edc03 | 1596 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1597 | struct bgp_dest *dest, uint32_t loc_seq, |
1598 | uint32_t *max_sync_seq, bool *active_on_peer, | |
36bac85c AK |
1599 | bool *peer_router, bool *proxy_from_peer, |
1600 | const struct ethaddr *mac) | |
9c7edc03 AK |
1601 | { |
1602 | struct bgp_path_info *tmp_pi; | |
1603 | struct bgp_path_info *second_best_path = NULL; | |
1604 | uint32_t tmp_mm_seq = 0; | |
1605 | esi_t *tmp_esi; | |
1606 | int paths_eq; | |
36bac85c AK |
1607 | struct ethaddr *tmp_mac; |
1608 | bool mac_cmp = false; | |
1609 | struct prefix_evpn *evp = (struct prefix_evpn *)&dest->p; | |
1610 | ||
1611 | ||
1612 | /* mac comparison is not needed for MAC-only routes */ | |
1613 | if (mac && !is_evpn_prefix_ipaddr_none(evp)) | |
1614 | mac_cmp = true; | |
9c7edc03 AK |
1615 | |
1616 | /* find the best non-local path. a local path can only be present | |
1617 | * as best path | |
1618 | */ | |
09319b4e DS |
1619 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1620 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1621 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1622 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1623 | continue; | |
1624 | ||
36bac85c AK |
1625 | /* ignore paths that have a different mac */ |
1626 | if (mac_cmp) { | |
1627 | tmp_mac = evpn_type2_path_info_get_mac(tmp_pi); | |
1628 | if (memcmp(mac, tmp_mac, sizeof(*mac))) | |
1629 | continue; | |
1630 | } | |
1631 | ||
9c7edc03 AK |
1632 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, |
1633 | second_best_path, &paths_eq)) | |
1634 | second_best_path = tmp_pi; | |
1635 | } | |
1636 | ||
1637 | if (!second_best_path) | |
1638 | return; | |
1639 | ||
1640 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1641 | /* if this has the same ES desination as the local path | |
1642 | * it is a sync path | |
1643 | */ | |
1644 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1645 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1646 | if (tmp_mm_seq < loc_seq) | |
1647 | return; | |
1648 | ||
1649 | /* we have a non-proxy path from the ES peer. */ | |
1650 | if (second_best_path->attr->es_flags & | |
1651 | ATTR_ES_PROXY_ADVERT) { | |
1652 | *proxy_from_peer = true; | |
1653 | } else { | |
1654 | *active_on_peer = true; | |
1655 | } | |
1656 | ||
1657 | if (second_best_path->attr->router_flag) | |
1658 | *peer_router = true; | |
1659 | ||
1660 | /* we use both proxy and non-proxy imports to | |
1661 | * determine the max sync sequence | |
1662 | */ | |
1663 | if (tmp_mm_seq > *max_sync_seq) | |
1664 | *max_sync_seq = tmp_mm_seq; | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1669 | * This is need for MM sequence number syncing and proxy advertisement. | |
1670 | * Note: The local path can only exist as a best path in the | |
1671 | * VPN route table. It will take precedence over all sync paths. | |
1672 | */ | |
1673 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1674 | struct bgp_dest *dest, |
1675 | struct attr *attr, | |
36bac85c AK |
1676 | uint32_t loc_seq, bool setup_sync, |
1677 | const struct ethaddr *mac) | |
9c7edc03 AK |
1678 | { |
1679 | esi_t *esi; | |
752eed47 DS |
1680 | struct prefix_evpn *evp = |
1681 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1682 | |
1683 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1684 | return; | |
1685 | ||
1686 | esi = bgp_evpn_attr_get_esi(attr); | |
1687 | if (bgp_evpn_is_esi_valid(esi)) { | |
1688 | if (setup_sync) { | |
1689 | uint32_t max_sync_seq = 0; | |
1690 | bool active_on_peer = false; | |
1691 | bool peer_router = false; | |
1692 | bool proxy_from_peer = false; | |
1693 | ||
09319b4e DS |
1694 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1695 | &max_sync_seq, &active_on_peer, | |
36bac85c AK |
1696 | &peer_router, &proxy_from_peer, |
1697 | mac); | |
9c7edc03 AK |
1698 | attr->mm_sync_seqnum = max_sync_seq; |
1699 | if (active_on_peer) | |
1700 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1701 | else | |
1702 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1703 | if (proxy_from_peer) | |
1704 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1705 | else | |
1706 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1707 | if (peer_router) | |
1708 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1709 | else | |
1710 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1711 | ||
1712 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1713 | char esi_buf[ESI_STR_LEN]; |
1714 | ||
2dbe669b DA |
1715 | zlog_debug( |
1716 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1717 | evp, | |
9c7edc03 | 1718 | esi_to_str(esi, esi_buf, |
2dbe669b | 1719 | sizeof(esi_buf)), |
9c7edc03 | 1720 | max_sync_seq, |
2dbe669b DA |
1721 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1722 | ? "peer-active " | |
1723 | : "", | |
1724 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1725 | ? "peer-proxy " | |
1726 | : "", | |
1727 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1728 | ? "peer-router " | |
1729 | : ""); | |
9c7edc03 AK |
1730 | } |
1731 | } | |
1732 | } else { | |
1733 | attr->mm_sync_seqnum = 0; | |
1734 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1735 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1736 | } | |
1737 | } | |
1738 | ||
128ea8ab | 1739 | /* |
852d9f97 | 1740 | * Create or update EVPN route entry. This could be in the VNI route tables |
128ea8ab | 1741 | * or the global route table. |
1742 | */ | |
d62a17ae | 1743 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1744 | afi_t afi, safi_t safi, |
1745 | struct bgp_dest *dest, struct attr *attr, | |
852d9f97 SW |
1746 | const struct ethaddr *mac, |
1747 | const struct ipaddr *ip, int add, | |
34c7f35f SW |
1748 | struct bgp_path_info **pi, uint8_t flags, |
1749 | uint32_t seq, bool vpn_rt, bool *old_is_sync) | |
d62a17ae | 1750 | { |
40381db7 DS |
1751 | struct bgp_path_info *tmp_pi; |
1752 | struct bgp_path_info *local_pi; | |
d62a17ae | 1753 | struct attr *attr_new; |
b57ba6d2 | 1754 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1755 | uint32_t num_labels = 1; |
d62a17ae | 1756 | int route_change = 1; |
d7c0a89a | 1757 | uint8_t sticky = 0; |
b54892e0 | 1758 | const struct prefix_evpn *evp; |
d62a17ae | 1759 | |
40381db7 | 1760 | *pi = NULL; |
9bcb3eef | 1761 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1762 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1763 | |
f07e1c99 | 1764 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1765 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1766 | |
1767 | /* If route doesn't exist already, create a new one, if told to. | |
1768 | * Otherwise act based on whether the attributes of the route have | |
1769 | * changed or not. | |
1770 | */ | |
40381db7 | 1771 | if (!local_pi && !add) |
d62a17ae | 1772 | return 0; |
1773 | ||
9c7edc03 AK |
1774 | if (old_is_sync && local_pi) |
1775 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1776 | ||
1777 | /* if a local path is being added with a non-zero esi look | |
1778 | * for SYNC paths from ES peers and bubble up the sync-info | |
1779 | */ | |
36bac85c | 1780 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt, mac); |
9c7edc03 | 1781 | |
f07e1c99 | 1782 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1783 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1784 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1785 | |
40381db7 | 1786 | if (!local_pi) { |
d62a17ae | 1787 | /* Add (or update) attribute to hash. */ |
1788 | attr_new = bgp_attr_intern(attr); | |
1789 | ||
1790 | /* Extract MAC mobility sequence number, if any. */ | |
1791 | attr_new->mm_seqnum = | |
1792 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1793 | attr_new->sticky = sticky; | |
1794 | ||
1795 | /* Create new route with its attribute. */ | |
40381db7 | 1796 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1797 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1798 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1799 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1800 | |
1801 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1802 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1803 | |
1804 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1805 | * Only attach second label if we are advertising two labels for | |
1806 | * type-2 routes. | |
1807 | */ | |
996c9314 LB |
1808 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1809 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1810 | vni_t l3vni; |
1811 | ||
1812 | l3vni = bgpevpn_get_l3vni(vpn); | |
1813 | if (l3vni) { | |
1814 | vni2label(l3vni, &label[1]); | |
1815 | num_labels++; | |
1816 | } | |
1817 | } | |
d62a17ae | 1818 | |
40381db7 DS |
1819 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1820 | tmp_pi->extra->num_labels = num_labels; | |
34c7f35f | 1821 | |
852d9f97 SW |
1822 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1823 | if (mac) | |
1824 | evpn_type2_path_info_set_mac(tmp_pi, *mac); | |
1825 | else if (ip) | |
1826 | evpn_type2_path_info_set_ip(tmp_pi, *ip); | |
1827 | } | |
34c7f35f | 1828 | |
0ca10580 CS |
1829 | /* Mark route as self type-2 route */ |
1830 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1831 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1832 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1833 | } else { |
40381db7 DS |
1834 | tmp_pi = local_pi; |
1835 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1836 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1837 | route_change = 0; |
1838 | else { | |
c48d9f5f MK |
1839 | /* |
1840 | * The attributes have changed, type-2 routes needs to | |
1841 | * be advertised with right labels. | |
1842 | */ | |
1843 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1844 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1845 | && CHECK_FLAG(vpn->flags, | |
1846 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1847 | vni_t l3vni; |
1848 | ||
1849 | l3vni = bgpevpn_get_l3vni(vpn); | |
1850 | if (l3vni) { | |
1851 | vni2label(l3vni, &label[1]); | |
1852 | num_labels++; | |
1853 | } | |
1854 | } | |
40381db7 DS |
1855 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1856 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1857 | |
852d9f97 SW |
1858 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1859 | if (mac) | |
1860 | evpn_type2_path_info_set_mac(tmp_pi, | |
1861 | *mac); | |
1862 | else if (ip) | |
1863 | evpn_type2_path_info_set_ip(tmp_pi, | |
1864 | *ip); | |
1865 | } | |
34c7f35f | 1866 | |
d62a17ae | 1867 | /* The attribute has changed. */ |
1868 | /* Add (or update) attribute to hash. */ | |
1869 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1870 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1871 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1872 | |
f07e1c99 | 1873 | /* Extract MAC mobility sequence number, if any. */ |
1874 | attr_new->mm_seqnum = | |
1875 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1876 | attr_new->sticky = sticky; | |
1877 | ||
d62a17ae | 1878 | /* Restore route, if needed. */ |
40381db7 | 1879 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1880 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1881 | |
1882 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1883 | bgp_attr_unintern(&tmp_pi->attr); |
1884 | tmp_pi->attr = attr_new; | |
083ec940 | 1885 | tmp_pi->uptime = monotime(NULL); |
d62a17ae | 1886 | } |
1887 | } | |
1888 | ||
58bff4d1 AK |
1889 | /* local MAC-IP routes in the VNI table are linked to |
1890 | * the destination ES | |
26c03e43 AK |
1891 | */ |
1892 | if (route_change && vpn_rt | |
1893 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1894 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1895 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1896 | ||
d62a17ae | 1897 | /* Return back the route entry. */ |
40381db7 | 1898 | *pi = tmp_pi; |
d62a17ae | 1899 | return route_change; |
128ea8ab | 1900 | } |
1901 | ||
ec0ab544 | 1902 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1903 | struct bgpevpn *vpn, |
1904 | struct bgp_dest *dest) | |
ec0ab544 AK |
1905 | { |
1906 | struct bgp_path_info *tmp_ri; | |
1907 | struct bgp_path_info *curr_select = NULL; | |
1908 | ||
9bcb3eef DS |
1909 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1910 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1911 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1912 | curr_select = tmp_ri; | |
1913 | break; | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1918 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1919 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1920 | evpn_zebra_install(bgp, vpn, | |
1921 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1922 | curr_select); | |
ec0ab544 AK |
1923 | } |
1924 | ||
6d8c603a AK |
1925 | /* |
1926 | * If the local route was not selected evict it and tell zebra to re-add | |
1927 | * the best remote dest. | |
1928 | * | |
1929 | * Typically a local path added by zebra is expected to be selected as | |
1930 | * best. In which case when a remote path wins as best (later) | |
1931 | * evpn_route_select_install itself evicts the older-local-best path. | |
1932 | * | |
1933 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1934 | * is possible that the local path is no longer the "older" best path. | |
1935 | * It is a path that was never designated as best and hence requires | |
1936 | * additional handling to prevent bgp from injecting and holding on to a | |
1937 | * non-best local path. | |
1938 | */ | |
1939 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1940 | struct bgpevpn *vpn, | |
9bcb3eef | 1941 | struct bgp_dest *dest, |
9a8897aa | 1942 | struct bgp_path_info *local_pi) |
6d8c603a | 1943 | { |
6d8c603a | 1944 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1945 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1946 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1947 | dest); |
b54892e0 | 1948 | |
9c7edc03 | 1949 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1950 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1951 | |
1952 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1953 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1954 | } |
1955 | ||
70524092 AK |
1956 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
1957 | const struct prefix_evpn *p, | |
1958 | esi_t *esi) | |
1959 | { | |
1960 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
1961 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
1962 | || (is_evpn_prefix_ipaddr_v6(p) |
1963 | && !IN6_IS_ADDR_LINKLOCAL( | |
1964 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
1965 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
1966 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
1967 | } | |
1968 | ||
128ea8ab | 1969 | /* |
1970 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1971 | * and schedule for processing. | |
1972 | */ | |
d62a17ae | 1973 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1974 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1975 | uint32_t seq, esi_t *esi) |
128ea8ab | 1976 | { |
9bcb3eef | 1977 | struct bgp_dest *dest; |
d62a17ae | 1978 | struct attr attr; |
1979 | struct attr *attr_new; | |
1ec31309 | 1980 | int add_l3_ecomm = 0; |
40381db7 | 1981 | struct bgp_path_info *pi; |
d62a17ae | 1982 | afi_t afi = AFI_L2VPN; |
1983 | safi_t safi = SAFI_EVPN; | |
1984 | int route_change; | |
9c7edc03 | 1985 | bool old_is_sync = false; |
852d9f97 | 1986 | bool mac_only = false; |
128ea8ab | 1987 | |
6006b807 | 1988 | memset(&attr, 0, sizeof(attr)); |
128ea8ab | 1989 | |
d62a17ae | 1990 | /* Build path-attribute for this route. */ |
0f05ea43 | 1991 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
d62a17ae | 1992 | attr.nexthop = vpn->originator_ip; |
1993 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1994 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1995 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1996 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1997 | attr.router_flag = CHECK_FLAG(flags, |
1998 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1999 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
2000 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
2001 | ||
2002 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 2003 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
2004 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
2005 | } | |
2006 | ||
be41eb68 | 2007 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 2008 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 2009 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 2010 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 2011 | } |
be41eb68 | 2012 | |
2304139a | 2013 | /* router mac is only needed for type-2 routes here. */ |
2014 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
2015 | uint8_t af_flags = 0; | |
2016 | ||
2017 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
2018 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
2019 | ||
2020 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
2021 | } | |
2022 | ||
9c7edc03 | 2023 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
2024 | char buf3[ESI_STR_LEN]; |
2025 | ||
23d0a753 | 2026 | zlog_debug( |
c0d72166 | 2027 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
2028 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2029 | : " ", | |
c0d72166 | 2030 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 2031 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 2032 | } |
0ca10580 | 2033 | |
a21bd7a3 | 2034 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 2035 | |
1ec31309 | 2036 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
2037 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
2038 | * these routes. | |
2039 | */ | |
70524092 AK |
2040 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2041 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 2042 | |
2043 | /* Set up extended community. */ | |
2044 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 2045 | |
852d9f97 SW |
2046 | /* First, create (or fetch) route node within the VNI. |
2047 | * NOTE: There is no RD here. | |
2048 | */ | |
2049 | dest = bgp_evpn_vni_node_get(vpn, p, NULL); | |
2050 | ||
2051 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
2052 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
2053 | mac_only = true; | |
128ea8ab | 2054 | |
d62a17ae | 2055 | /* Create or update route entry. */ |
34c7f35f | 2056 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2057 | bgp, vpn, afi, safi, dest, &attr, |
2058 | (mac_only ? NULL : &p->prefix.macip_addr.mac), NULL /* ip */, 1, | |
34c7f35f | 2059 | &pi, flags, seq, true /* setup_sync */, &old_is_sync); |
40381db7 DS |
2060 | assert(pi); |
2061 | attr_new = pi->attr; | |
128ea8ab | 2062 | |
6d8c603a AK |
2063 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2064 | bgp_path_info_lock(pi); | |
7ab604ab CS |
2065 | |
2066 | /* Perform route selection. Normally, the local route in the | |
2067 | * VNI is expected to win and be the best route. However, if | |
2068 | * there is a race condition where a host moved from local to | |
2069 | * remote and the remote route was received in BGP just prior | |
2070 | * to the local MACIP notification from zebra, the remote | |
2071 | * route would win, and we should evict the defunct local route | |
2072 | * and (re)install the remote route into zebra. | |
2073 | */ | |
9bcb3eef | 2074 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 2075 | /* |
9a8897aa AK |
2076 | * If the new local route was not selected evict it and tell zebra |
2077 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
2078 | * routes. | |
6d8c603a | 2079 | */ |
9c7edc03 | 2080 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 2081 | route_change = 0; |
9c7edc03 AK |
2082 | } else { |
2083 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2084 | route_change = 0; | |
2085 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
2086 | } else { | |
2087 | bool new_is_sync; | |
2088 | ||
2089 | /* If the local path already existed and is still the | |
2090 | * best path we need to also check if it transitioned | |
2091 | * from being a sync path to a non-sync path. If it | |
2092 | * it did we need to notify zebra that the sync-path | |
2093 | * has been removed. | |
2094 | */ | |
2095 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2096 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2097 | evpn_zebra_uninstall(bgp, vpn, p, pi, true); |
9c7edc03 | 2098 | } |
9a8897aa | 2099 | } |
6d8c603a AK |
2100 | bgp_path_info_unlock(pi); |
2101 | ||
9bcb3eef | 2102 | bgp_dest_unlock_node(dest); |
128ea8ab | 2103 | |
d62a17ae | 2104 | /* If this is a new route or some attribute has changed, export the |
2105 | * route to the global table. The route will be advertised to peers | |
2106 | * from there. Note that this table is a 2-level tree (RD-level + | |
2107 | * Prefix-level) similar to L3VPN routes. | |
2108 | */ | |
2109 | if (route_change) { | |
40381db7 | 2110 | struct bgp_path_info *global_pi; |
128ea8ab | 2111 | |
34c7f35f SW |
2112 | dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, |
2113 | p, &vpn->prd, NULL); | |
852d9f97 SW |
2114 | update_evpn_route_entry( |
2115 | bgp, vpn, afi, safi, dest, attr_new, NULL /* mac */, | |
2116 | NULL /* ip */, 1, &global_pi, flags, seq, | |
2117 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 2118 | |
d62a17ae | 2119 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
2120 | bgp_process(bgp, dest, afi, safi); |
2121 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2122 | } |
128ea8ab | 2123 | |
d62a17ae | 2124 | /* Unintern temporary. */ |
2125 | aspath_unintern(&attr.aspath); | |
128ea8ab | 2126 | |
d62a17ae | 2127 | return 0; |
128ea8ab | 2128 | } |
2129 | ||
50f74cf1 | 2130 | /* |
2131 | * Delete EVPN route entry. | |
2132 | * The entry can be in ESI/VNI table or the global table. | |
2133 | */ | |
185fb14a | 2134 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 2135 | struct bgp_dest *dest, |
40381db7 | 2136 | struct bgp_path_info **pi) |
342dd0c6 | 2137 | { |
40381db7 | 2138 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 2139 | |
40381db7 | 2140 | *pi = NULL; |
342dd0c6 | 2141 | |
50f74cf1 | 2142 | /* Now, find matching route. */ |
9bcb3eef | 2143 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 2144 | tmp_pi = tmp_pi->next) |
40381db7 DS |
2145 | if (tmp_pi->peer == bgp->peer_self |
2146 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2147 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 2148 | break; |
2149 | ||
40381db7 | 2150 | *pi = tmp_pi; |
342dd0c6 | 2151 | |
2152 | /* Mark route for delete. */ | |
40381db7 | 2153 | if (tmp_pi) |
9bcb3eef | 2154 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 2155 | } |
2156 | ||
2157 | /* Delete EVPN type5 route */ | |
996c9314 | 2158 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2159 | { |
2160 | afi_t afi = AFI_L2VPN; | |
2161 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 2162 | struct bgp_dest *dest = NULL; |
40381db7 | 2163 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2164 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2165 | |
5e53dce3 T |
2166 | bgp_evpn = bgp_get_evpn(); |
2167 | if (!bgp_evpn) | |
faafdfa8 | 2168 | return 0; |
342dd0c6 | 2169 | |
2170 | /* locate the global route entry for this type-5 prefix */ | |
34c7f35f SW |
2171 | dest = bgp_evpn_global_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
2172 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 2173 | if (!dest) |
342dd0c6 | 2174 | return 0; |
2175 | ||
9bcb3eef | 2176 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 2177 | if (pi) |
9bcb3eef DS |
2178 | bgp_process(bgp_evpn, dest, afi, safi); |
2179 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 2180 | return 0; |
2181 | } | |
2182 | ||
128ea8ab | 2183 | /* |
2184 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2185 | * schedule for processing. | |
2186 | */ | |
d62a17ae | 2187 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2188 | struct prefix_evpn *p) | |
2189 | { | |
9bcb3eef | 2190 | struct bgp_dest *dest, *global_dest; |
40381db7 | 2191 | struct bgp_path_info *pi; |
d62a17ae | 2192 | afi_t afi = AFI_L2VPN; |
2193 | safi_t safi = SAFI_EVPN; | |
2194 | ||
2195 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2196 | * there | |
2197 | * is nothing further to do. | |
852d9f97 | 2198 | * NOTE: There is no RD here. |
d62a17ae | 2199 | */ |
852d9f97 | 2200 | dest = bgp_evpn_vni_node_lookup(vpn, p, NULL); |
9bcb3eef | 2201 | if (!dest) |
d62a17ae | 2202 | return 0; |
2203 | ||
2204 | /* Next, locate route node in the global EVPN routing table. Note that | |
2205 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2206 | * L3VPN routes. | |
2207 | */ | |
34c7f35f SW |
2208 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
2209 | safi, p, &vpn->prd, NULL); | |
9bcb3eef | 2210 | if (global_dest) { |
d62a17ae | 2211 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 2212 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 2213 | |
2214 | /* Schedule for processing - withdraws to peers happen from | |
2215 | * this table. | |
2216 | */ | |
40381db7 | 2217 | if (pi) |
9bcb3eef DS |
2218 | bgp_process(bgp, global_dest, afi, safi); |
2219 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 2220 | } |
2221 | ||
2222 | /* Delete route entry in the VNI route table. This can just be removed. | |
2223 | */ | |
9bcb3eef | 2224 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 2225 | if (pi) { |
9bcb3eef DS |
2226 | bgp_path_info_reap(dest, pi); |
2227 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 2228 | } |
9bcb3eef | 2229 | bgp_dest_unlock_node(dest); |
d62a17ae | 2230 | |
2231 | return 0; | |
128ea8ab | 2232 | } |
2233 | ||
70524092 AK |
2234 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2235 | struct bgp_dest *dest, | |
2236 | struct bgp_path_info *local_pi, | |
2237 | const char *caller) | |
9c7edc03 AK |
2238 | { |
2239 | afi_t afi = AFI_L2VPN; | |
2240 | safi_t safi = SAFI_EVPN; | |
2241 | struct bgp_path_info *pi; | |
2242 | struct attr attr; | |
2243 | struct attr *attr_new; | |
2244 | uint32_t seq; | |
2245 | int add_l3_ecomm = 0; | |
09319b4e | 2246 | struct bgp_dest *global_dest; |
9c7edc03 | 2247 | struct bgp_path_info *global_pi; |
34c7f35f | 2248 | struct prefix_evpn evp; |
9c7edc03 AK |
2249 | int route_change; |
2250 | bool old_is_sync = false; | |
2251 | ||
2252 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
2253 | return; | |
2254 | ||
34c7f35f SW |
2255 | /* |
2256 | * VNI table MAC-IP prefixes don't have MAC so make sure it's set from | |
2257 | * path info here. | |
2258 | */ | |
852d9f97 SW |
2259 | if (is_evpn_prefix_ipaddr_none((struct prefix_evpn *)&dest->p)) { |
2260 | /* VNI MAC -> Global */ | |
2261 | evpn_type2_prefix_global_copy( | |
2262 | &evp, (struct prefix_evpn *)&dest->p, NULL /* mac */, | |
2263 | evpn_type2_path_info_get_ip(local_pi)); | |
2264 | } else { | |
2265 | /* VNI IP -> Global */ | |
2266 | evpn_type2_prefix_global_copy( | |
2267 | &evp, (struct prefix_evpn *)&dest->p, | |
2268 | evpn_type2_path_info_get_mac(local_pi), NULL /* ip */); | |
2269 | } | |
34c7f35f | 2270 | |
9c7edc03 AK |
2271 | /* |
2272 | * Build attribute per local route as the MAC mobility and | |
2273 | * some other values could differ for different routes. The | |
2274 | * attributes will be shared in the hash table. | |
2275 | */ | |
0f05ea43 | 2276 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
9c7edc03 AK |
2277 | attr.nexthop = vpn->originator_ip; |
2278 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2279 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2280 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2281 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2282 | attr.es_flags = local_pi->attr->es_flags; | |
2283 | if (local_pi->attr->default_gw) { | |
2284 | attr.default_gw = 1; | |
34c7f35f | 2285 | if (is_evpn_prefix_ipaddr_v6(&evp)) |
9c7edc03 AK |
2286 | attr.router_flag = 1; |
2287 | } | |
2288 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
34c7f35f | 2289 | bgp_evpn_get_rmac_nexthop(vpn, &evp, &attr, local_pi->extra->af_flags); |
9c7edc03 AK |
2290 | vni2label(vpn->vni, &(attr.label)); |
2291 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2292 | * using L3 VNI for type-2 routes also. | |
2293 | */ | |
70524092 | 2294 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
34c7f35f | 2295 | vpn, &evp, |
70524092 | 2296 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); |
9c7edc03 AK |
2297 | |
2298 | /* Set up extended community. */ | |
2299 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2300 | seq = mac_mobility_seqnum(local_pi->attr); | |
2301 | ||
2302 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2303 | char buf3[ESI_STR_LEN]; |
2304 | ||
23d0a753 | 2305 | zlog_debug( |
c0d72166 | 2306 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2307 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2308 | : " ", | |
34c7f35f | 2309 | vpn->vni, &evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2310 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2311 | attr.es_flags, caller); | |
9c7edc03 AK |
2312 | } |
2313 | ||
2314 | /* Update the route entry. */ | |
09319b4e | 2315 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2316 | bgp, vpn, afi, safi, dest, &attr, NULL /* mac */, NULL /* ip */, |
2317 | 0, &pi, 0, seq, true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2318 | |
2319 | assert(pi); | |
2320 | attr_new = pi->attr; | |
2321 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2322 | bgp_path_info_lock(pi); | |
2323 | ||
2324 | /* Perform route selection. Normally, the local route in the | |
2325 | * VNI is expected to win and be the best route. However, | |
2326 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2327 | * that causes best selection to be based on next hop), a | |
2328 | * remote route could win. If the local route is the best, | |
2329 | * ensure it is updated in the global EVPN route table and | |
2330 | * advertised to peers; otherwise, ensure it is evicted and | |
2331 | * (re)install the remote route into zebra. | |
2332 | */ | |
09319b4e | 2333 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2334 | |
2335 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2336 | route_change = 0; | |
2337 | } else { | |
2338 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2339 | route_change = 0; | |
09319b4e | 2340 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2341 | } else { |
2342 | bool new_is_sync; | |
2343 | ||
2344 | /* If the local path already existed and is still the | |
2345 | * best path we need to also check if it transitioned | |
2346 | * from being a sync path to a non-sync path. If it | |
2347 | * it did we need to notify zebra that the sync-path | |
2348 | * has been removed. | |
2349 | */ | |
2350 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2351 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2352 | evpn_zebra_uninstall(bgp, vpn, &evp, pi, true); |
9c7edc03 AK |
2353 | } |
2354 | } | |
2355 | ||
2356 | ||
2357 | /* unlock pi */ | |
2358 | bgp_path_info_unlock(pi); | |
2359 | ||
2360 | if (route_change) { | |
2361 | /* Update route in global routing table. */ | |
34c7f35f SW |
2362 | global_dest = bgp_evpn_global_node_get( |
2363 | bgp->rib[afi][safi], afi, safi, &evp, &vpn->prd, NULL); | |
09319b4e | 2364 | assert(global_dest); |
852d9f97 SW |
2365 | update_evpn_route_entry( |
2366 | bgp, vpn, afi, safi, global_dest, attr_new, | |
2367 | NULL /* mac */, NULL /* ip */, 0, &global_pi, 0, | |
2368 | mac_mobility_seqnum(attr_new), false /* setup_sync */, | |
2369 | NULL /* old_is_sync */); | |
9c7edc03 AK |
2370 | |
2371 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2372 | bgp_process(bgp, global_dest, afi, safi); |
2373 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2374 | } |
2375 | ||
2376 | /* Unintern temporary. */ | |
2377 | aspath_unintern(&attr.aspath); | |
2378 | } | |
2379 | ||
852d9f97 SW |
2380 | static void update_type2_route(struct bgp *bgp, struct bgpevpn *vpn, |
2381 | struct bgp_dest *dest) | |
2382 | { | |
2383 | struct bgp_path_info *tmp_pi; | |
2384 | ||
2385 | const struct prefix_evpn *evp = | |
2386 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2387 | ||
2388 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2389 | return; | |
2390 | ||
2391 | /* Identify local route. */ | |
2392 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; | |
2393 | tmp_pi = tmp_pi->next) { | |
2394 | if (tmp_pi->peer == bgp->peer_self && | |
2395 | tmp_pi->type == ZEBRA_ROUTE_BGP && | |
2396 | tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
2397 | break; | |
2398 | } | |
2399 | ||
2400 | if (!tmp_pi) | |
2401 | return; | |
2402 | ||
2403 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, __func__); | |
2404 | } | |
2405 | ||
128ea8ab | 2406 | /* |
2407 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2408 | * be scheduled for advertise to peers. | |
2409 | */ | |
852d9f97 | 2410 | static void update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 2411 | { |
9bcb3eef | 2412 | struct bgp_dest *dest; |
d62a17ae | 2413 | |
852d9f97 SW |
2414 | /* Walk this VNI's route MAC & IP table and update local type-2 |
2415 | * routes. For any routes updated, update corresponding entry in the | |
2416 | * global table too. | |
d62a17ae | 2417 | */ |
852d9f97 SW |
2418 | for (dest = bgp_table_top(vpn->mac_table); dest; |
2419 | dest = bgp_route_next(dest)) | |
2420 | update_type2_route(bgp, vpn, dest); | |
d62a17ae | 2421 | |
852d9f97 SW |
2422 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2423 | dest = bgp_route_next(dest)) | |
2424 | update_type2_route(bgp, vpn, dest); | |
128ea8ab | 2425 | } |
2426 | ||
2427 | /* | |
2428 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2429 | * global routing table. These are also scheduled for withdraw from peers. | |
2430 | */ | |
17151ae9 | 2431 | static void delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2432 | { |
d62a17ae | 2433 | afi_t afi; |
2434 | safi_t safi; | |
9bcb3eef | 2435 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2436 | struct bgp_table *table; |
40381db7 | 2437 | struct bgp_path_info *pi; |
128ea8ab | 2438 | |
d62a17ae | 2439 | afi = AFI_L2VPN; |
2440 | safi = SAFI_EVPN; | |
128ea8ab | 2441 | |
9bcb3eef DS |
2442 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2443 | (struct prefix *)&vpn->prd); | |
17151ae9 | 2444 | if (rddest) { |
9bcb3eef DS |
2445 | table = bgp_dest_get_bgp_table_info(rddest); |
2446 | for (dest = bgp_table_top(table); dest; | |
2447 | dest = bgp_route_next(dest)) { | |
2448 | const struct prefix_evpn *evp = | |
2449 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2450 | dest); | |
128ea8ab | 2451 | |
d62a17ae | 2452 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2453 | continue; | |
128ea8ab | 2454 | |
9bcb3eef | 2455 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2456 | if (pi) |
9bcb3eef | 2457 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2458 | } |
128ea8ab | 2459 | |
17151ae9 | 2460 | /* Unlock RD node. */ |
9bcb3eef | 2461 | bgp_dest_unlock_node(rddest); |
17151ae9 | 2462 | } |
128ea8ab | 2463 | } |
2464 | ||
852d9f97 SW |
2465 | static void delete_vni_type2_route(struct bgp *bgp, struct bgp_dest *dest) |
2466 | { | |
2467 | struct bgp_path_info *pi; | |
2468 | afi_t afi = AFI_L2VPN; | |
2469 | safi_t safi = SAFI_EVPN; | |
2470 | ||
2471 | const struct prefix_evpn *evp = | |
2472 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2473 | ||
2474 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2475 | return; | |
2476 | ||
2477 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); | |
2478 | ||
2479 | /* Route entry in local table gets deleted immediately. */ | |
2480 | if (pi) | |
2481 | bgp_path_info_reap(dest, pi); | |
2482 | } | |
2483 | ||
2484 | static void delete_vni_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
2485 | { | |
2486 | struct bgp_dest *dest; | |
2487 | ||
2488 | /* Next, walk this VNI's MAC & IP route table and delete local type-2 | |
2489 | * routes. | |
2490 | */ | |
2491 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
2492 | dest = bgp_route_next(dest)) | |
2493 | delete_vni_type2_route(bgp, dest); | |
2494 | ||
2495 | for (dest = bgp_table_top(vpn->ip_table); dest; | |
2496 | dest = bgp_route_next(dest)) | |
2497 | delete_vni_type2_route(bgp, dest); | |
2498 | } | |
2499 | ||
128ea8ab | 2500 | /* |
2501 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2502 | * table as well as the per-VNI route table. | |
2503 | */ | |
852d9f97 | 2504 | static void delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2505 | { |
d62a17ae | 2506 | /* First, walk the global route table for this VNI's type-2 local |
2507 | * routes. | |
2508 | * EVPN routes are a 2-level table, first get the RD table. | |
2509 | */ | |
2510 | delete_global_type2_routes(bgp, vpn); | |
852d9f97 | 2511 | delete_vni_type2_routes(bgp, vpn); |
128ea8ab | 2512 | } |
2513 | ||
2514 | /* | |
2515 | * Delete all routes in the per-VNI route table. | |
2516 | */ | |
852d9f97 | 2517 | static void delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2518 | { |
9bcb3eef | 2519 | struct bgp_dest *dest; |
40381db7 | 2520 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2521 | |
852d9f97 SW |
2522 | /* Walk this VNI's MAC & IP route table and delete all routes. */ |
2523 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
9bcb3eef DS |
2524 | dest = bgp_route_next(dest)) { |
2525 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2526 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2527 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2528 | bgp_path_info_delete(dest, pi); |
2529 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2530 | } |
2531 | } | |
128ea8ab | 2532 | |
852d9f97 SW |
2533 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2534 | dest = bgp_route_next(dest)) { | |
2535 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
2536 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
2537 | bgp_path_info_delete(dest, pi); | |
2538 | bgp_path_info_reap(dest, pi); | |
2539 | } | |
2540 | } | |
128ea8ab | 2541 | } |
2542 | ||
833b8a50 AK |
2543 | /* BUM traffic flood mode per-l2-vni */ |
2544 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2545 | struct bgpevpn *vpn) | |
2546 | { | |
2547 | /* if flooding has been globally disabled per-vni mode is | |
2548 | * not relevant | |
2549 | */ | |
2550 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2551 | return VXLAN_FLOOD_DISABLED; | |
2552 | ||
2553 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2554 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2555 | return VXLAN_FLOOD_PIM_SM; | |
2556 | ||
2557 | /* default is ingress replication */ | |
2558 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2559 | } | |
2560 | ||
128ea8ab | 2561 | /* |
2562 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2563 | * export RT getting modified or change to tunnel IP. Note that these | |
2564 | * situations need the route in the per-VNI table as well as the global | |
2565 | * table to be updated (as attributes change). | |
2566 | */ | |
0ca10580 | 2567 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2568 | { |
d62a17ae | 2569 | int ret; |
2570 | struct prefix_evpn p; | |
128ea8ab | 2571 | |
9c49ac74 AD |
2572 | update_type1_routes_for_evi(bgp, vpn); |
2573 | ||
d62a17ae | 2574 | /* Update and advertise the type-3 route (only one) followed by the |
2575 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2576 | * |
2577 | * RT-3 only if doing head-end replication | |
d62a17ae | 2578 | */ |
833b8a50 AK |
2579 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2580 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2581 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2582 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2583 | if (ret) |
2584 | return ret; | |
2585 | } | |
128ea8ab | 2586 | |
852d9f97 SW |
2587 | update_all_type2_routes(bgp, vpn); |
2588 | return 0; | |
128ea8ab | 2589 | } |
2590 | ||
2591 | /* | |
2592 | * Delete (and withdraw) local routes for specified VNI from the global | |
2593 | * table and per-VNI table. After this, remove all other routes from | |
2594 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2595 | * (advertise-all-vni) being disabled. | |
2596 | */ | |
d62a17ae | 2597 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2598 | { |
d62a17ae | 2599 | int ret; |
2600 | struct prefix_evpn p; | |
128ea8ab | 2601 | |
d62a17ae | 2602 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2603 | * followed by type-3 routes (only one) - for this VNI. | |
2604 | */ | |
852d9f97 | 2605 | delete_all_type2_routes(bgp, vpn); |
128ea8ab | 2606 | |
d62a17ae | 2607 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2608 | ret = delete_evpn_route(bgp, vpn, &p); | |
2609 | if (ret) | |
2610 | return ret; | |
128ea8ab | 2611 | |
d62a17ae | 2612 | /* Delete all routes from the per-VNI table. */ |
852d9f97 SW |
2613 | delete_all_vni_routes(bgp, vpn); |
2614 | return 0; | |
128ea8ab | 2615 | } |
2616 | ||
76d07c7a AK |
2617 | /* |
2618 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2619 | * remove the type-3 route if any. A new type-3 route will be generated | |
2620 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2621 | */ | |
2622 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2623 | struct in_addr mcast_grp) | |
2624 | { | |
2625 | struct prefix_evpn p; | |
2626 | ||
2627 | vpn->mcast_grp = mcast_grp; | |
2628 | ||
2629 | if (is_vni_live(vpn)) { | |
2630 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2631 | delete_evpn_route(bgp, vpn, &p); | |
2632 | } | |
2633 | ||
2634 | return 0; | |
2635 | } | |
2636 | ||
128ea8ab | 2637 | /* |
d1911c26 | 2638 | * There is a tunnel endpoint IP address change for this VNI, delete |
2639 | * prior type-3 route (if needed) and update. | |
2640 | * Note: Route re-advertisement happens elsewhere after other processing | |
2641 | * other changes. | |
128ea8ab | 2642 | */ |
d62a17ae | 2643 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2644 | struct in_addr originator_ip) | |
128ea8ab | 2645 | { |
d62a17ae | 2646 | struct prefix_evpn p; |
128ea8ab | 2647 | |
ddd16ed5 MK |
2648 | /* If VNI is not live, we only need to update the originator ip */ |
2649 | if (!is_vni_live(vpn)) { | |
2650 | vpn->originator_ip = originator_ip; | |
2651 | return 0; | |
2652 | } | |
2653 | ||
db0e1937 MK |
2654 | /* Update the tunnel-ip hash */ |
2655 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2656 | bgp_tip_add(bgp, &originator_ip); | |
2657 | ||
2658 | /* filter routes as martian nexthop db has changed */ | |
2659 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2660 | ||
d62a17ae | 2661 | /* Need to withdraw type-3 route as the originator IP is part |
2662 | * of the key. | |
2663 | */ | |
2664 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2665 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2666 | |
d62a17ae | 2667 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2668 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2669 | return 0; |
185fb14a | 2670 | } |
50f74cf1 | 2671 | |
185fb14a AK |
2672 | static struct bgp_path_info * |
2673 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2674 | struct bgp_dest *dest, struct attr *attr) | |
2675 | { | |
2676 | struct attr *attr_new; | |
2677 | struct bgp_path_info *pi; | |
50f74cf1 | 2678 | |
185fb14a AK |
2679 | /* Add (or update) attribute to hash. */ |
2680 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2681 | |
185fb14a AK |
2682 | /* Create new route with its attribute. */ |
2683 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2684 | attr_new, dest); | |
2685 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2686 | bgp_path_info_extra_get(pi); | |
2687 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2688 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2689 | if (parent_pi->extra) { | |
2690 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2691 | sizeof(pi->extra->label)); | |
2692 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2693 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2694 | } |
34c7f35f | 2695 | |
185fb14a | 2696 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2697 | |
185fb14a | 2698 | return pi; |
50f74cf1 | 2699 | } |
2700 | ||
d3135ba3 | 2701 | /* |
2702 | * Install route entry into the VRF routing table and invoke route selection. | |
2703 | */ | |
2704 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2705 | const struct prefix_evpn *evp, |
40381db7 | 2706 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2707 | { |
9bcb3eef | 2708 | struct bgp_dest *dest; |
40381db7 | 2709 | struct bgp_path_info *pi; |
1ec31309 | 2710 | struct attr attr; |
d3135ba3 | 2711 | struct attr *attr_new; |
c4edf708 | 2712 | int ret = 0; |
d3135ba3 | 2713 | struct prefix p; |
2714 | struct prefix *pp = &p; | |
2715 | afi_t afi = 0; | |
2716 | safi_t safi = 0; | |
5f0c5ec8 | 2717 | bool new_pi = false; |
58bff4d1 AK |
2718 | bool use_l3nhg = false; |
2719 | bool is_l3nhg_active = false; | |
a2299aba | 2720 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2721 | |
2722 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2723 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2724 | |
2dbe669b | 2725 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2726 | zlog_debug( |
2dbe669b DA |
2727 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2728 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2729 | parent_pi->flags); | |
1eb88002 | 2730 | |
d3135ba3 | 2731 | /* Create (or fetch) route within the VRF. */ |
2732 | /* NOTE: There is no RD here. */ | |
3714a385 | 2733 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2734 | afi = AFI_IP; |
2735 | safi = SAFI_UNICAST; | |
9bcb3eef | 2736 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2737 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2738 | afi = AFI_IP6; |
2739 | safi = SAFI_UNICAST; | |
9bcb3eef | 2740 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2741 | } else |
2742 | return 0; | |
2743 | ||
1ec31309 | 2744 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2745 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2746 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2747 | * address for the rest of the code to flow through. In the case of IPv4, | |
2748 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2749 | */ |
6f4f49b2 | 2750 | attr = *parent_pi->attr; |
a2299aba AD |
2751 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2752 | if (afi == AFI_IP6) | |
2753 | evpn_convert_nexthop_to_ipv6(&attr); | |
7226bc40 TA |
2754 | else { |
2755 | attr.nexthop = attr.mp_nexthop_global_in; | |
a2299aba | 2756 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
7226bc40 | 2757 | } |
a2299aba AD |
2758 | } else { |
2759 | ||
2760 | /* | |
2761 | * If gateway IP overlay index is specified in the NLRI of | |
2762 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2763 | * for the prefix in the VRF | |
2764 | */ | |
2765 | if (bgp_debug_zebra(NULL)) { | |
2766 | zlog_debug( | |
2767 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2768 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2769 | buf1, sizeof(buf1)), pp, | |
2770 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2771 | } | |
2772 | ||
2773 | if (afi == AFI_IP6) { | |
2774 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2775 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2776 | sizeof(struct in6_addr)); |
2777 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2778 | } else { | |
860e740b | 2779 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2780 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2781 | } | |
2782 | } | |
1ec31309 | 2783 | |
58bff4d1 AK |
2784 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2785 | &is_l3nhg_active, NULL); | |
2786 | if (use_l3nhg) | |
2787 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2788 | if (is_l3nhg_active) | |
2789 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2790 | ||
d3135ba3 | 2791 | /* Check if route entry is already present. */ |
9bcb3eef | 2792 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2793 | if (pi->extra |
2794 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2795 | break; |
2796 | ||
5f0c5ec8 | 2797 | if (!pi) { |
9bcb3eef | 2798 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2799 | new_pi = true; |
2800 | } else { | |
40381db7 DS |
2801 | if (attrhash_cmp(pi->attr, &attr) |
2802 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2803 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2804 | return 0; |
2805 | } | |
2806 | /* The attribute has changed. */ | |
2807 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2808 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2809 | |
2810 | /* Restore route, if needed. */ | |
40381db7 | 2811 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2812 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2813 | |
2814 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2815 | if ((afi == AFI_IP |
2816 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2817 | || (afi == AFI_IP6 | |
2818 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2819 | &attr_new->mp_nexthop_global))) | |
2820 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2821 | |
9bcb3eef | 2822 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2823 | /* Unintern existing, set to new. */ |
40381db7 DS |
2824 | bgp_attr_unintern(&pi->attr); |
2825 | pi->attr = attr_new; | |
083ec940 | 2826 | pi->uptime = monotime(NULL); |
d3135ba3 | 2827 | } |
a2299aba AD |
2828 | |
2829 | /* Gateway IP nexthop should be resolved */ | |
2830 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2831 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2832 | NULL, 0, NULL)) |
a2299aba AD |
2833 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2834 | else { | |
2835 | if (BGP_DEBUG(nht, NHT)) { | |
2836 | inet_ntop(pp->family, | |
2837 | &attr.evpn_overlay.gw_ip, | |
2838 | buf1, sizeof(buf1)); | |
2839 | zlog_debug("%s: gateway IP NH unresolved", | |
2840 | buf1); | |
2841 | } | |
2842 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2843 | } | |
2844 | } else { | |
2845 | ||
2846 | /* as it is an importation, change nexthop */ | |
2847 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2848 | } | |
d3135ba3 | 2849 | |
090efa2f AK |
2850 | /* Link path to evpn nexthop */ |
2851 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2852 | ||
9bcb3eef | 2853 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2854 | safi); |
b49cdf4c | 2855 | |
d3135ba3 | 2856 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2857 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2858 | |
7452e879 | 2859 | /* Process for route leaking. */ |
2860 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2861 | ||
9bcb3eef | 2862 | bgp_dest_unlock_node(dest); |
3c11d70a | 2863 | |
5f0c5ec8 | 2864 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2865 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2866 | new_pi ? "new" : "update", dest, | |
2867 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2868 | pi->flags); | |
5f0c5ec8 | 2869 | |
d3135ba3 | 2870 | return ret; |
2871 | } | |
2872 | ||
128ea8ab | 2873 | /* |
852d9f97 | 2874 | * Common handling for vni route tables install/selection. |
128ea8ab | 2875 | */ |
852d9f97 SW |
2876 | static int install_evpn_route_entry_in_vni_common( |
2877 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
2878 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
d62a17ae | 2879 | { |
40381db7 | 2880 | struct bgp_path_info *pi; |
9c7edc03 | 2881 | struct bgp_path_info *local_pi; |
d62a17ae | 2882 | struct attr *attr_new; |
2883 | int ret; | |
74efb822 AK |
2884 | bool old_local_es = false; |
2885 | bool new_local_es; | |
c44ab6f1 | 2886 | |
d62a17ae | 2887 | /* Check if route entry is already present. */ |
9bcb3eef | 2888 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2889 | if (pi->extra |
2890 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2891 | break; |
2892 | ||
bd0254af MS |
2893 | if (!pi) { |
2894 | /* Create an info */ | |
26c03e43 | 2895 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2896 | parent_pi->attr); |
34c7f35f | 2897 | |
852d9f97 SW |
2898 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2899 | if (is_evpn_type2_dest_ipaddr_none(dest)) | |
2900 | evpn_type2_path_info_set_ip( | |
2901 | pi, p->prefix.macip_addr.ip); | |
2902 | else | |
2903 | evpn_type2_path_info_set_mac( | |
2904 | pi, p->prefix.macip_addr.mac); | |
2905 | } | |
34c7f35f | 2906 | |
74efb822 | 2907 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2908 | } else { |
40381db7 DS |
2909 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2910 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2911 | bgp_dest_unlock_node(dest); |
d62a17ae | 2912 | return 0; |
2913 | } | |
2914 | /* The attribute has changed. */ | |
2915 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2916 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2917 | |
50f74cf1 | 2918 | /* Restore route, if needed. */ |
40381db7 | 2919 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2920 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2921 | |
2922 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2923 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2924 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2925 | |
74efb822 AK |
2926 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
2927 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
2928 | /* If ESI is different or if its type has changed we | |
2929 | * need to reinstall the path in zebra | |
2930 | */ | |
2931 | if ((old_local_es != new_local_es) | |
2932 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
2933 | sizeof(attr_new->esi))) { | |
2934 | ||
2935 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2936 | zlog_debug("VNI %d path %pFX chg to %s es", | |
2937 | vpn->vni, &pi->net->p, | |
2938 | new_local_es ? "local" | |
2939 | : "non-local"); | |
2940 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
2941 | } | |
2942 | ||
50f74cf1 | 2943 | /* Unintern existing, set to new. */ |
40381db7 DS |
2944 | bgp_attr_unintern(&pi->attr); |
2945 | pi->attr = attr_new; | |
083ec940 | 2946 | pi->uptime = monotime(NULL); |
50f74cf1 | 2947 | } |
2948 | ||
021b6596 AD |
2949 | /* Add this route to remote IP hashtable */ |
2950 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
2951 | ||
50f74cf1 | 2952 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2953 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2954 | |
9c7edc03 AK |
2955 | /* if the best path is a local path with a non-zero ES |
2956 | * sync info against the local path may need to be updated | |
2957 | * when a remote path is added/updated (including changes | |
2958 | * from sync-path to remote-path) | |
2959 | */ | |
2960 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 2961 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 2962 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 2963 | __func__); |
852d9f97 SW |
2964 | |
2965 | return ret; | |
2966 | } | |
2967 | ||
2968 | /* | |
2969 | * Common handling for vni route tables uninstall/selection. | |
2970 | */ | |
2971 | static int uninstall_evpn_route_entry_in_vni_common( | |
2972 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
2973 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
2974 | { | |
2975 | struct bgp_path_info *pi; | |
2976 | struct bgp_path_info *local_pi; | |
2977 | int ret; | |
2978 | ||
2979 | /* Find matching route entry. */ | |
2980 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
2981 | if (pi->extra && | |
2982 | (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
2983 | break; | |
2984 | ||
2985 | if (!pi) | |
2986 | return 0; | |
2987 | ||
2988 | bgp_evpn_remote_ip_hash_del(vpn, pi); | |
2989 | ||
2990 | /* Mark entry for deletion */ | |
2991 | bgp_path_info_delete(dest, pi); | |
2992 | ||
2993 | /* Perform route selection and update zebra, if required. */ | |
2994 | ret = evpn_route_select_install(bgp, vpn, dest); | |
2995 | ||
2996 | /* if the best path is a local path with a non-zero ES | |
2997 | * sync info against the local path may need to be updated | |
2998 | * when a remote path is deleted | |
2999 | */ | |
3000 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
3001 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
3002 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
3003 | __func__); | |
3004 | ||
3005 | return ret; | |
3006 | } | |
3007 | ||
3008 | /* | |
3009 | * Install route entry into VNI IP table and invoke route selection. | |
3010 | */ | |
3011 | static int install_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3012 | struct bgpevpn *vpn, | |
3013 | const struct prefix_evpn *p, | |
3014 | struct bgp_path_info *parent_pi) | |
3015 | { | |
3016 | int ret; | |
3017 | struct bgp_dest *dest; | |
3018 | ||
3019 | /* Ignore MAC Only Type-2 */ | |
3020 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3021 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3022 | return 0; | |
3023 | ||
3024 | /* Create (or fetch) route within the VNI IP table. */ | |
3025 | dest = bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
3026 | ||
3027 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3028 | parent_pi); | |
3029 | ||
3030 | bgp_dest_unlock_node(dest); | |
3031 | ||
3032 | return ret; | |
3033 | } | |
3034 | ||
3035 | /* | |
3036 | * Install route entry into VNI MAC table and invoke route selection. | |
3037 | */ | |
3038 | static int install_evpn_route_entry_in_vni_mac(struct bgp *bgp, | |
3039 | struct bgpevpn *vpn, | |
3040 | const struct prefix_evpn *p, | |
3041 | struct bgp_path_info *parent_pi) | |
3042 | { | |
3043 | int ret; | |
3044 | struct bgp_dest *dest; | |
3045 | ||
3046 | /* Only type-2 routes go into this table */ | |
3047 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3048 | return 0; | |
3049 | ||
3050 | /* Create (or fetch) route within the VNI MAC table. */ | |
3051 | dest = bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
3052 | ||
3053 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3054 | parent_pi); | |
3055 | ||
3056 | bgp_dest_unlock_node(dest); | |
3057 | ||
3058 | return ret; | |
3059 | } | |
3060 | ||
3061 | /* | |
3062 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3063 | */ | |
3064 | static int uninstall_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3065 | struct bgpevpn *vpn, | |
3066 | const struct prefix_evpn *p, | |
3067 | struct bgp_path_info *parent_pi) | |
3068 | { | |
3069 | int ret; | |
3070 | struct bgp_dest *dest; | |
3071 | ||
3072 | /* Ignore MAC Only Type-2 */ | |
3073 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3074 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3075 | return 0; | |
3076 | ||
3077 | /* Locate route within the VNI IP table. */ | |
3078 | dest = bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
3079 | if (!dest) | |
3080 | return 0; | |
3081 | ||
3082 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3083 | parent_pi); | |
3084 | ||
9bcb3eef | 3085 | bgp_dest_unlock_node(dest); |
a97a1e11 | 3086 | |
50f74cf1 | 3087 | return ret; |
3088 | } | |
3089 | ||
852d9f97 SW |
3090 | /* |
3091 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3092 | */ | |
3093 | static int | |
3094 | uninstall_evpn_route_entry_in_vni_mac(struct bgp *bgp, struct bgpevpn *vpn, | |
3095 | const struct prefix_evpn *p, | |
3096 | struct bgp_path_info *parent_pi) | |
3097 | { | |
3098 | int ret; | |
3099 | struct bgp_dest *dest; | |
3100 | ||
3101 | /* Only type-2 routes go into this table */ | |
3102 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3103 | return 0; | |
3104 | ||
3105 | /* Locate route within the VNI MAC table. */ | |
3106 | dest = bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, parent_pi); | |
3107 | if (!dest) | |
3108 | return 0; | |
3109 | ||
3110 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3111 | parent_pi); | |
3112 | ||
3113 | bgp_dest_unlock_node(dest); | |
3114 | ||
3115 | return ret; | |
3116 | } | |
d3135ba3 | 3117 | /* |
3118 | * Uninstall route entry from the VRF routing table and send message | |
3119 | * to zebra, if appropriate. | |
3120 | */ | |
3121 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 3122 | const struct prefix_evpn *evp, |
40381db7 | 3123 | struct bgp_path_info *parent_pi) |
d3135ba3 | 3124 | { |
9bcb3eef | 3125 | struct bgp_dest *dest; |
40381db7 | 3126 | struct bgp_path_info *pi; |
c4edf708 | 3127 | int ret = 0; |
d3135ba3 | 3128 | struct prefix p; |
3129 | struct prefix *pp = &p; | |
3130 | afi_t afi = 0; | |
3131 | safi_t safi = 0; | |
3132 | ||
3133 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 3134 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 3135 | |
2dbe669b | 3136 | if (bgp_debug_zebra(NULL)) |
996c9314 | 3137 | zlog_debug( |
2dbe669b DA |
3138 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
3139 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
3140 | parent_pi->flags); | |
1eb88002 | 3141 | |
d3135ba3 | 3142 | /* Locate route within the VRF. */ |
3143 | /* NOTE: There is no RD here. */ | |
3714a385 | 3144 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 3145 | afi = AFI_IP; |
3146 | safi = SAFI_UNICAST; | |
9bcb3eef | 3147 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3148 | } else { |
3149 | afi = AFI_IP6; | |
3150 | safi = SAFI_UNICAST; | |
9bcb3eef | 3151 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3152 | } |
3153 | ||
9bcb3eef | 3154 | if (!dest) |
d3135ba3 | 3155 | return 0; |
3156 | ||
3157 | /* Find matching route entry. */ | |
9bcb3eef | 3158 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3159 | if (pi->extra |
3160 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 3161 | break; |
3162 | ||
e71ad4b6 DA |
3163 | if (!pi) { |
3164 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 3165 | return 0; |
e71ad4b6 | 3166 | } |
d3135ba3 | 3167 | |
5f0c5ec8 | 3168 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
3169 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
3170 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
3171 | pi->flags); | |
5f0c5ec8 | 3172 | |
7452e879 | 3173 | /* Process for route leaking. */ |
3174 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
3175 | ||
9bcb3eef | 3176 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 3177 | safi); |
4c7a11d5 | 3178 | |
d3135ba3 | 3179 | /* Mark entry for deletion */ |
9bcb3eef | 3180 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 3181 | |
090efa2f AK |
3182 | /* Unlink path to evpn nexthop */ |
3183 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
3184 | ||
d3135ba3 | 3185 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3186 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 3187 | |
3188 | /* Unlock route node. */ | |
9bcb3eef | 3189 | bgp_dest_unlock_node(dest); |
d3135ba3 | 3190 | |
3191 | return ret; | |
3192 | } | |
3193 | ||
128ea8ab | 3194 | /* |
852d9f97 SW |
3195 | * Install route entry into the VNI routing tables. |
3196 | */ | |
3197 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, | |
3198 | const struct prefix_evpn *p, | |
3199 | struct bgp_path_info *parent_pi) | |
3200 | { | |
3201 | int ret = 0; | |
3202 | ||
3203 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) | |
3204 | zlog_debug( | |
3205 | "%s (%u): Installing EVPN %pFX route in VNI %u IP/MAC table", | |
3206 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3207 | ||
3208 | ret = install_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); | |
3209 | ||
3210 | if (ret) { | |
3211 | flog_err( | |
3212 | EC_BGP_EVPN_FAIL, | |
3213 | "%s (%u): Failed to install EVPN %pFX route in VNI %u MAC table", | |
3214 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3215 | ||
3216 | return ret; | |
3217 | } | |
3218 | ||
3219 | ret = install_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); | |
3220 | ||
3221 | if (ret) { | |
3222 | flog_err( | |
3223 | EC_BGP_EVPN_FAIL, | |
3224 | "%s (%u): Failed to install EVPN %pFX route in VNI %u IP table", | |
3225 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3226 | ||
3227 | return ret; | |
3228 | } | |
3229 | ||
3230 | return ret; | |
3231 | } | |
3232 | ||
3233 | /* | |
3234 | * Uninstall route entry from the VNI routing tables. | |
128ea8ab | 3235 | */ |
d62a17ae | 3236 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 3237 | const struct prefix_evpn *p, |
40381db7 | 3238 | struct bgp_path_info *parent_pi) |
128ea8ab | 3239 | { |
852d9f97 | 3240 | int ret = 0; |
128ea8ab | 3241 | |
852d9f97 SW |
3242 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) |
3243 | zlog_debug( | |
3244 | "%s (%u): Uninstalling EVPN %pFX route from VNI %u IP/MAC table", | |
3245 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3246 | |
852d9f97 | 3247 | ret = uninstall_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); |
128ea8ab | 3248 | |
852d9f97 SW |
3249 | if (ret) { |
3250 | flog_err( | |
3251 | EC_BGP_EVPN_FAIL, | |
3252 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u IP table", | |
3253 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
021b6596 | 3254 | |
852d9f97 SW |
3255 | return ret; |
3256 | } | |
128ea8ab | 3257 | |
852d9f97 | 3258 | ret = uninstall_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); |
128ea8ab | 3259 | |
852d9f97 SW |
3260 | if (ret) { |
3261 | flog_err( | |
3262 | EC_BGP_EVPN_FAIL, | |
3263 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u MAC table", | |
3264 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
9c7edc03 | 3265 | |
852d9f97 SW |
3266 | return ret; |
3267 | } | |
128ea8ab | 3268 | |
d62a17ae | 3269 | return ret; |
128ea8ab | 3270 | } |
3271 | ||
5ba238b7 MK |
3272 | /* |
3273 | * Given a route entry and a VRF, see if this route entry should be | |
3274 | * imported into the VRF i.e., RTs match. | |
3275 | */ | |
4b7e6066 | 3276 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 3277 | struct bgp_path_info *pi) |
5ba238b7 | 3278 | { |
40381db7 | 3279 | struct attr *attr = pi->attr; |
5ba238b7 | 3280 | struct ecommunity *ecom; |
f6e07e1b | 3281 | uint32_t i; |
5ba238b7 MK |
3282 | |
3283 | assert(attr); | |
3284 | /* Route should have valid RT to be even considered. */ | |
3285 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3286 | return 0; | |
3287 | ||
b53e67a3 | 3288 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
3289 | if (!ecom || !ecom->size) |
3290 | return 0; | |
3291 | ||
3292 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3293 | * matches, we're done. | |
3294 | */ | |
3295 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3296 | uint8_t *pnt; |
3297 | uint8_t type, sub_type; | |
5ba238b7 MK |
3298 | struct ecommunity_val *eval; |
3299 | struct ecommunity_val eval_tmp; | |
3300 | struct vrf_irt_node *irt; | |
3301 | ||
3302 | /* Only deal with RTs */ | |
34540b0d | 3303 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 3304 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3305 | + (i * ecom->unit_size)); |
5ba238b7 MK |
3306 | type = *pnt++; |
3307 | sub_type = *pnt++; | |
3308 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3309 | continue; | |
3310 | ||
3311 | /* See if this RT matches specified VNIs import RTs */ | |
3312 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 3313 | if (irt) |
5ba238b7 MK |
3314 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3315 | return 1; | |
3316 | ||
3317 | /* Also check for non-exact match. In this, we mask out the AS | |
3318 | * and | |
3319 | * only check on the local-admin sub-field. This is to | |
3320 | * facilitate using | |
3321 | * VNI as the RT for EBGP peering too. | |
3322 | */ | |
3323 | irt = NULL; | |
3324 | if (type == ECOMMUNITY_ENCODE_AS | |
3325 | || type == ECOMMUNITY_ENCODE_AS4 | |
3326 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3327 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
3328 | mask_ecom_global_admin(&eval_tmp, eval); |
3329 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3330 | } | |
5d9cbca2 | 3331 | if (irt) |
5ba238b7 MK |
3332 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3333 | return 1; | |
3334 | } | |
3335 | ||
3336 | return 0; | |
3337 | } | |
3338 | ||
128ea8ab | 3339 | /* |
3340 | * Given a route entry and a VNI, see if this route entry should be | |
3341 | * imported into the VNI i.e., RTs match. | |
3342 | */ | |
d62a17ae | 3343 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3344 | struct bgp_path_info *pi) |
d62a17ae | 3345 | { |
40381db7 | 3346 | struct attr *attr = pi->attr; |
d62a17ae | 3347 | struct ecommunity *ecom; |
f6e07e1b | 3348 | uint32_t i; |
d62a17ae | 3349 | |
3350 | assert(attr); | |
3351 | /* Route should have valid RT to be even considered. */ | |
3352 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3353 | return 0; | |
3354 | ||
b53e67a3 | 3355 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3356 | if (!ecom || !ecom->size) |
3357 | return 0; | |
3358 | ||
3359 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3360 | * matches, we're done. | |
3361 | */ | |
3362 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3363 | uint8_t *pnt; |
3364 | uint8_t type, sub_type; | |
d62a17ae | 3365 | struct ecommunity_val *eval; |
3366 | struct ecommunity_val eval_tmp; | |
3367 | struct irt_node *irt; | |
3368 | ||
3369 | /* Only deal with RTs */ | |
34540b0d | 3370 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3371 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3372 | + (i * ecom->unit_size)); |
d62a17ae | 3373 | type = *pnt++; |
3374 | sub_type = *pnt++; | |
3375 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3376 | continue; | |
3377 | ||
3378 | /* See if this RT matches specified VNIs import RTs */ | |
3379 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3380 | if (irt) |
d62a17ae | 3381 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3382 | return 1; | |
3383 | ||
3384 | /* Also check for non-exact match. In this, we mask out the AS | |
3385 | * and | |
3386 | * only check on the local-admin sub-field. This is to | |
3387 | * facilitate using | |
3388 | * VNI as the RT for EBGP peering too. | |
3389 | */ | |
3390 | irt = NULL; | |
3391 | if (type == ECOMMUNITY_ENCODE_AS | |
3392 | || type == ECOMMUNITY_ENCODE_AS4 | |
3393 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3394 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 3395 | mask_ecom_global_admin(&eval_tmp, eval); |
3396 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3397 | } | |
b1ab0dfe | 3398 | if (irt) |
d62a17ae | 3399 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3400 | return 1; | |
3401 | } | |
3402 | ||
3403 | return 0; | |
128ea8ab | 3404 | } |
3405 | ||
47bf0432 CS |
3406 | /* This API will scan evpn routes for checking attribute's rmac |
3407 | * macthes with bgp instance router mac. It avoid installing | |
3408 | * route into bgp vrf table and remote rmac in bridge table. | |
3409 | */ | |
3410 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3411 | const struct prefix_evpn *evp, |
47bf0432 CS |
3412 | struct bgp_path_info *pi) |
3413 | { | |
3414 | /* evpn route could have learnt prior to L3vni has come up, | |
3415 | * perform rmac check before installing route and | |
3416 | * remote router mac. | |
3417 | * The route will be removed from global bgp table once | |
3418 | * SVI comes up with MAC and stored in hash, triggers | |
3419 | * bgp_mac_rescan_all_evpn_tables. | |
3420 | */ | |
05864da7 | 3421 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 3422 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
3423 | char attr_str[BUFSIZ] = {0}; |
3424 | ||
5022c833 | 3425 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 3426 | |
2dbe669b DA |
3427 | zlog_debug( |
3428 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
3429 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
3430 | } |
3431 | ||
3432 | return 1; | |
3433 | } | |
3434 | ||
3435 | return 0; | |
3436 | } | |
3437 | ||
bbc57c6c AK |
3438 | /* don't import hosts that are locally attached */ |
3439 | static inline bool | |
36dd4574 AK |
3440 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
3441 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
3442 | struct bgp_path_info *pi, int install) |
3443 | { | |
26c03e43 | 3444 | esi_t *esi; |
bbc57c6c | 3445 | |
26c03e43 AK |
3446 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3447 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
3448 | ||
3449 | /* Don't import routes that point to a local destination */ | |
3450 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
3451 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
3452 | char esi_buf[ESI_STR_LEN]; | |
3453 | ||
3454 | zlog_debug( | |
3455 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
3456 | install ? "import" : "unimport", evp, | |
3457 | esi_to_str(esi, esi_buf, | |
3458 | sizeof(esi_buf))); | |
3459 | } | |
3460 | return true; | |
3461 | } | |
58bff4d1 AK |
3462 | } |
3463 | return false; | |
3464 | } | |
26c03e43 | 3465 | |
58bff4d1 AK |
3466 | /* |
3467 | * Install or uninstall a mac-ip route in the provided vrf if | |
3468 | * there is a rt match | |
3469 | */ | |
3470 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3471 | struct bgp_path_info *pi, | |
3472 | int install) | |
3473 | { | |
3474 | int ret = 0; | |
3475 | const struct prefix_evpn *evp = | |
3476 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3477 | ||
3478 | /* Consider "valid" remote routes applicable for | |
3479 | * this VRF. | |
3480 | */ | |
3481 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3482 | && pi->type == ZEBRA_ROUTE_BGP | |
3483 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3484 | return 0; | |
3485 | ||
58bff4d1 AK |
3486 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3487 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3488 | return 0; | |
3489 | ||
74efb822 | 3490 | /* don't import hosts that are locally attached */ |
e57e63eb | 3491 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3492 | bgp_vrf, evp, pi, install)) | |
3493 | return 0; | |
3494 | ||
3495 | if (install) | |
58bff4d1 | 3496 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3497 | else |
58bff4d1 AK |
3498 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3499 | pi); | |
26c03e43 | 3500 | |
58bff4d1 AK |
3501 | if (ret) |
3502 | flog_err(EC_BGP_EVPN_FAIL, | |
3503 | "Failed to %s EVPN %pFX route in VRF %s", | |
3504 | install ? "install" : "uninstall", evp, | |
3505 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3506 | } |
58bff4d1 AK |
3507 | |
3508 | return ret; | |
bbc57c6c AK |
3509 | } |
3510 | ||
5ba238b7 MK |
3511 | /* |
3512 | * Install or uninstall mac-ip routes are appropriate for this | |
3513 | * particular VRF. | |
3514 | */ | |
996c9314 | 3515 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3516 | { |
3517 | afi_t afi; | |
3518 | safi_t safi; | |
9bcb3eef | 3519 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3520 | struct bgp_table *table; |
40381db7 | 3521 | struct bgp_path_info *pi; |
5ba238b7 | 3522 | int ret; |
5e53dce3 | 3523 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3524 | |
3525 | afi = AFI_L2VPN; | |
3526 | safi = SAFI_EVPN; | |
5e53dce3 T |
3527 | bgp_evpn = bgp_get_evpn(); |
3528 | if (!bgp_evpn) | |
5ba238b7 MK |
3529 | return -1; |
3530 | ||
3531 | /* Walk entire global routing table and evaluate routes which could be | |
3532 | * imported into this VRF. Note that we need to loop through all global | |
3533 | * routes to determine which route matches the import rt on vrf | |
3534 | */ | |
9bcb3eef DS |
3535 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3536 | rd_dest = bgp_route_next(rd_dest)) { | |
3537 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3538 | if (!table) |
3539 | continue; | |
3540 | ||
9bcb3eef DS |
3541 | for (dest = bgp_table_top(table); dest; |
3542 | dest = bgp_route_next(dest)) { | |
3543 | const struct prefix_evpn *evp = | |
3544 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3545 | dest); | |
5ba238b7 | 3546 | |
1eb88002 | 3547 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3548 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3549 | || evp->prefix.route_type | |
3550 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3551 | continue; |
3552 | ||
1eb88002 | 3553 | /* if not a mac+ip route skip this route */ |
3714a385 | 3554 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3555 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3556 | continue; |
3557 | ||
9bcb3eef | 3558 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3559 | pi = pi->next) { |
58bff4d1 AK |
3560 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3561 | bgp_vrf, pi, install); | |
3562 | if (ret) | |
3563 | return ret; | |
5ba238b7 MK |
3564 | } |
3565 | } | |
3566 | } | |
3567 | ||
3568 | return 0; | |
3569 | } | |
3570 | ||
128ea8ab | 3571 | /* |
3572 | * Install or uninstall routes of specified type that are appropriate for this | |
3573 | * particular VNI. | |
3574 | */ | |
d62a17ae | 3575 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3576 | struct bgpevpn *vpn, | |
3577 | bgp_evpn_route_type rtype, | |
3578 | int install) | |
3579 | { | |
0291c246 MK |
3580 | afi_t afi; |
3581 | safi_t safi; | |
9bcb3eef | 3582 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3583 | struct bgp_table *table; |
40381db7 | 3584 | struct bgp_path_info *pi; |
0291c246 | 3585 | int ret; |
d62a17ae | 3586 | |
3587 | afi = AFI_L2VPN; | |
3588 | safi = SAFI_EVPN; | |
3589 | ||
3590 | /* Walk entire global routing table and evaluate routes which could be | |
3591 | * imported into this VPN. Note that we cannot just look at the routes | |
3592 | * for | |
3593 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3594 | * RD. | |
3595 | */ | |
3596 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3597 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3598 | rd_dest = bgp_route_next(rd_dest)) { | |
3599 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3600 | if (!table) |
3601 | continue; | |
3602 | ||
9bcb3eef DS |
3603 | for (dest = bgp_table_top(table); dest; |
3604 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3605 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3606 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3607 | dest); | |
d62a17ae | 3608 | |
3609 | if (evp->prefix.route_type != rtype) | |
3610 | continue; | |
3611 | ||
9bcb3eef | 3612 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3613 | pi = pi->next) { |
d62a17ae | 3614 | /* Consider "valid" remote routes applicable for |
3615 | * this VNI. */ | |
40381db7 DS |
3616 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3617 | && pi->type == ZEBRA_ROUTE_BGP | |
3618 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3619 | continue; |
3620 | ||
40381db7 | 3621 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3622 | if (install) |
3623 | ret = install_evpn_route_entry( | |
40381db7 | 3624 | bgp, vpn, evp, pi); |
d62a17ae | 3625 | else |
3626 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3627 | bgp, vpn, evp, pi); |
d62a17ae | 3628 | |
3629 | if (ret) { | |
af4c2728 | 3630 | flog_err( |
e50f7cfd | 3631 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3632 | "%u: Failed to %s EVPN %s route in VNI %u", |
3633 | bgp->vrf_id, | |
3634 | install ? "install" | |
3635 | : "uninstall", | |
3636 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3637 | ? "MACIP" | |
3638 | : "IMET", | |
3639 | vpn->vni); | |
dc52bece DS |
3640 | |
3641 | bgp_dest_unlock_node(rd_dest); | |
3642 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3643 | return ret; |
3644 | } | |
3645 | } | |
3646 | } | |
3647 | } | |
3648 | } | |
3649 | ||
3650 | return 0; | |
128ea8ab | 3651 | } |
3652 | ||
5ba238b7 | 3653 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3654 | * is invoked upon l3vni-add or l3vni import rt change |
3655 | */ | |
5ba238b7 MK |
3656 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3657 | { | |
3658 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3659 | return 0; | |
3660 | } | |
3661 | ||
128ea8ab | 3662 | /* |
3663 | * Install any existing remote routes applicable for this VNI into its | |
3664 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3665 | * RT is changed. | |
3666 | */ | |
d62a17ae | 3667 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3668 | { |
d62a17ae | 3669 | int ret; |
128ea8ab | 3670 | |
d62a17ae | 3671 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3672 | * for this VNI. | |
3673 | */ | |
3674 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3675 | 1); | |
3676 | if (ret) | |
3677 | return ret; | |
128ea8ab | 3678 | |
c44ab6f1 AK |
3679 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3680 | 1); | |
3681 | if (ret) | |
3682 | return ret; | |
3683 | ||
d62a17ae | 3684 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3685 | 1); | |
128ea8ab | 3686 | } |
3687 | ||
5ba238b7 MK |
3688 | /* uninstall routes from l3vni vrf. */ |
3689 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3690 | { | |
3691 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3692 | return 0; | |
3693 | } | |
3694 | ||
90e60aa7 | 3695 | /* |
3696 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3697 | * this is invoked is upon an import RT change. | |
3698 | */ | |
d62a17ae | 3699 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3700 | { |
d62a17ae | 3701 | int ret; |
90e60aa7 | 3702 | |
d62a17ae | 3703 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3704 | * applicable | |
3705 | * for this VNI. | |
3706 | */ | |
3707 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3708 | 0); | |
3709 | if (ret) | |
3710 | return ret; | |
90e60aa7 | 3711 | |
c44ab6f1 | 3712 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3713 | 0); |
c44ab6f1 AK |
3714 | if (ret) |
3715 | return ret; | |
3716 | ||
3717 | ||
d62a17ae | 3718 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3719 | 0); | |
90e60aa7 | 3720 | } |
3721 | ||
d3135ba3 | 3722 | /* |
3723 | * Install or uninstall route in matching VRFs (list). | |
3724 | */ | |
3725 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3726 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3727 | struct bgp_path_info *pi, |
d3135ba3 | 3728 | struct list *vrfs, int install) |
3729 | { | |
d3135ba3 | 3730 | struct bgp *bgp_vrf; |
3731 | struct listnode *node, *nnode; | |
3732 | ||
90264d64 | 3733 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3734 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3735 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3736 | return 0; |
3737 | ||
90264d64 | 3738 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3739 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3740 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3741 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3742 | return 0; |
3743 | ||
d3135ba3 | 3744 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3745 | int ret; | |
3746 | ||
36dd4574 | 3747 | /* don't import hosts that are locally attached */ |
e57e63eb | 3748 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3749 | bgp_vrf, evp, pi, install)) | |
3750 | return 0; | |
3751 | ||
3752 | if (install) | |
40381db7 | 3753 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3754 | else |
996c9314 | 3755 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3756 | pi); |
d3135ba3 | 3757 | |
3758 | if (ret) { | |
e50f7cfd | 3759 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3760 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3761 | bgp_def->vrf_id, |
2dbe669b | 3762 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3763 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3764 | return ret; |
3765 | } | |
3766 | } | |
3767 | ||
3768 | return 0; | |
3769 | } | |
3770 | ||
128ea8ab | 3771 | /* |
3772 | * Install or uninstall route in matching VNIs (list). | |
3773 | */ | |
d62a17ae | 3774 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3775 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3776 | struct bgp_path_info *pi, |
d62a17ae | 3777 | struct list *vnis, int install) |
128ea8ab | 3778 | { |
d62a17ae | 3779 | struct bgpevpn *vpn; |
3780 | struct listnode *node, *nnode; | |
128ea8ab | 3781 | |
d62a17ae | 3782 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3783 | int ret; | |
128ea8ab | 3784 | |
d62a17ae | 3785 | if (!is_vni_live(vpn)) |
3786 | continue; | |
128ea8ab | 3787 | |
d62a17ae | 3788 | if (install) |
40381db7 | 3789 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3790 | else |
40381db7 | 3791 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3792 | |
d62a17ae | 3793 | if (ret) { |
1c50c1c0 QY |
3794 | flog_err(EC_BGP_EVPN_FAIL, |
3795 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3796 | bgp->vrf_id, install ? "install" : "uninstall", | |
3797 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3798 | ? "MACIP" | |
3799 | : "IMET", | |
3800 | vpn->vni); | |
d62a17ae | 3801 | return ret; |
3802 | } | |
3803 | } | |
128ea8ab | 3804 | |
d62a17ae | 3805 | return 0; |
128ea8ab | 3806 | } |
3807 | ||
3808 | /* | |
50f74cf1 | 3809 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3810 | */ |
26c03e43 AK |
3811 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3812 | safi_t safi, const struct prefix *p, | |
3813 | struct bgp_path_info *pi, | |
3814 | int import, bool in_vni_rt, | |
3815 | bool in_vrf_rt) | |
d62a17ae | 3816 | { |
3817 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3818 | struct attr *attr = pi->attr; |
d62a17ae | 3819 | struct ecommunity *ecom; |
f6e07e1b | 3820 | uint32_t i; |
c44ab6f1 | 3821 | struct prefix_evpn ad_evp; |
d62a17ae | 3822 | |
3823 | assert(attr); | |
3824 | ||
fff7545a | 3825 | /* Only type-1, type-2, type-3, type-4 and type-5 |
3826 | * are supported currently | |
3827 | */ | |
d62a17ae | 3828 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3829 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3830 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3831 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3832 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3833 | return 0; |
3834 | ||
3835 | /* If we don't have Route Target, nothing much to do. */ | |
3836 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3837 | return 0; | |
3838 | ||
c44ab6f1 AK |
3839 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3840 | * we need to create a different copy for the VNI | |
3841 | */ | |
3842 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
852d9f97 SW |
3843 | evp = evpn_type1_prefix_vni_ip_copy(&ad_evp, evp, |
3844 | attr->nexthop); | |
c44ab6f1 | 3845 | |
b53e67a3 | 3846 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3847 | if (!ecom || !ecom->size) |
3848 | return -1; | |
3849 | ||
50f74cf1 | 3850 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3851 | * attached to the route */ | |
d62a17ae | 3852 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3853 | uint8_t *pnt; |
3854 | uint8_t type, sub_type; | |
d62a17ae | 3855 | struct ecommunity_val *eval; |
3856 | struct ecommunity_val eval_tmp; | |
996c9314 | 3857 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3858 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3859 | struct bgp_evpn_es *es; |
d62a17ae | 3860 | |
3861 | /* Only deal with RTs */ | |
34540b0d | 3862 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3863 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3864 | + (i * ecom->unit_size)); |
d62a17ae | 3865 | type = *pnt++; |
3866 | sub_type = *pnt++; | |
3867 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3868 | continue; | |
3869 | ||
58bff4d1 AK |
3870 | /* non-local MAC-IP routes in the global route table are linked |
3871 | * to the destination ES | |
3872 | */ | |
3873 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3874 | bgp_evpn_path_es_link(pi, 0, | |
3875 | bgp_evpn_attr_get_esi(pi->attr)); | |
3876 | ||
50f74cf1 | 3877 | /* |
3878 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3879 | * IMET route is imported into VNI table. | |
3880 | * prefix routes are imported into VRF table. | |
523cafc4 | 3881 | */ |
50f74cf1 | 3882 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3883 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3884 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3885 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3886 | |
26c03e43 | 3887 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3888 | if (irt) |
40381db7 DS |
3889 | install_uninstall_route_in_vnis( |
3890 | bgp, afi, safi, evp, pi, irt->vnis, | |
3891 | import); | |
50f74cf1 | 3892 | |
26c03e43 | 3893 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3894 | if (vrf_irt) |
40381db7 DS |
3895 | install_uninstall_route_in_vrfs( |
3896 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3897 | import); | |
50f74cf1 | 3898 | |
3899 | /* Also check for non-exact match. | |
3900 | * In this, we mask out the AS and | |
3901 | * only check on the local-admin sub-field. | |
3902 | * This is to facilitate using | |
3903 | * VNI as the RT for EBGP peering too. | |
3904 | */ | |
3905 | irt = NULL; | |
3906 | vrf_irt = NULL; | |
3907 | if (type == ECOMMUNITY_ENCODE_AS | |
3908 | || type == ECOMMUNITY_ENCODE_AS4 | |
3909 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3910 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3911 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3912 | if (in_vni_rt) |
3913 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3914 | if (in_vrf_rt) | |
3915 | vrf_irt = | |
3916 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3917 | } |
3918 | ||
3919 | if (irt) | |
40381db7 DS |
3920 | install_uninstall_route_in_vnis( |
3921 | bgp, afi, safi, evp, pi, irt->vnis, | |
3922 | import); | |
50f74cf1 | 3923 | if (vrf_irt) |
40381db7 DS |
3924 | install_uninstall_route_in_vrfs( |
3925 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3926 | import); | |
50f74cf1 | 3927 | } |
3928 | ||
3929 | /* es route is imported into the es table */ | |
3930 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3931 | ||
3932 | /* we will match based on the entire esi to avoid | |
fff7545a | 3933 | * import of an es route for esi2 into esi1 |
50f74cf1 | 3934 | */ |
c44ab6f1 | 3935 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3936 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3937 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3938 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3939 | } |
d62a17ae | 3940 | } |
3941 | ||
3942 | return 0; | |
128ea8ab | 3943 | } |
3944 | ||
26c03e43 AK |
3945 | /* |
3946 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3947 | */ | |
3948 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3949 | const struct prefix *p, | |
3950 | struct bgp_path_info *pi, int import) | |
3951 | { | |
3952 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3953 | true, true); | |
3954 | } | |
3955 | ||
74efb822 AK |
3956 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
3957 | { | |
3958 | struct bgp *bgp_evpn; | |
3959 | ||
3960 | bgp_evpn = bgp_get_evpn(); | |
3961 | if (!bgp_evpn) | |
3962 | return; | |
3963 | ||
3964 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3965 | &pi->net->p, pi, import); | |
3966 | } | |
3967 | ||
2bb9eff4 DS |
3968 | /* |
3969 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3970 | * routes | |
3971 | */ | |
80b140af MK |
3972 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3973 | { | |
5fd9c12b KA |
3974 | /* Delete ipv4 default route and withdraw from peers */ |
3975 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3976 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3977 | SAFI_UNICAST, false); | |
3978 | ||
80b140af | 3979 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3980 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3981 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3982 | |
5fd9c12b KA |
3983 | /* Delete ipv6 default route and withdraw from peers */ |
3984 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3985 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3986 | SAFI_UNICAST, false); | |
3987 | ||
80b140af | 3988 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3989 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3990 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3991 | } |
3992 | ||
2bb9eff4 DS |
3993 | /* |
3994 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3995 | * routes | |
3996 | */ | |
5394a276 | 3997 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3998 | { |
5394a276 CS |
3999 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
4000 | ||
4001 | bgp_evpn = bgp_get_evpn(); | |
4002 | if (!bgp_evpn) | |
4003 | return; | |
4004 | ||
80b140af | 4005 | /* update all ipv4 routes */ |
fdf19f06 MK |
4006 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4007 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4008 | |
5fd9c12b KA |
4009 | /* update ipv4 default route and withdraw from peers */ |
4010 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4011 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4012 | SAFI_UNICAST, true); | |
4013 | ||
80b140af | 4014 | /* update all ipv6 routes */ |
fdf19f06 MK |
4015 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4016 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
4017 | |
4018 | /* update ipv6 default route and withdraw from peers */ | |
4019 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4020 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4021 | SAFI_UNICAST, true); | |
4022 | ||
80b140af MK |
4023 | } |
4024 | ||
676f83b9 | 4025 | /* |
4026 | * update and advertise local routes for a VRF as type-5 routes. | |
4027 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
4028 | * done in the global route table using the routes which already exist in the | |
4029 | * VRF routing table | |
4030 | */ | |
80b140af | 4031 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4032 | { |
80b140af MK |
4033 | /* skip if the RD is configured */ |
4034 | if (is_vrf_rd_configured(bgp_vrf)) | |
4035 | return; | |
4036 | ||
4037 | /* derive the RD for the VRF based on new router-id */ | |
4038 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
4039 | ||
4040 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
4041 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 4042 | } |
4043 | ||
4044 | /* | |
4045 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
4046 | * This is invoked upon VRF RD change. The processing is done only from global | |
4047 | * table. | |
4048 | */ | |
80b140af | 4049 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4050 | { |
80b140af MK |
4051 | /* skip if the RD is configured */ |
4052 | if (is_vrf_rd_configured(bgp_vrf)) | |
4053 | return; | |
4054 | ||
4055 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
4056 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 4057 | } |
4058 | ||
852d9f97 SW |
4059 | static void update_advertise_vni_route(struct bgp *bgp, struct bgpevpn *vpn, |
4060 | struct bgp_dest *dest) | |
4061 | { | |
4062 | struct bgp_dest *global_dest; | |
4063 | struct bgp_path_info *pi, *global_pi; | |
4064 | struct attr *attr; | |
4065 | afi_t afi = AFI_L2VPN; | |
4066 | safi_t safi = SAFI_EVPN; | |
4067 | ||
4068 | struct prefix_evpn tmp_evp; | |
4069 | const struct prefix_evpn *evp = | |
4070 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
4071 | ||
4072 | /* | |
4073 | * We have already processed type-3 routes. | |
4074 | * Process only type-1 and type-2 routes here. | |
4075 | */ | |
4076 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE && | |
4077 | evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
4078 | return; | |
4079 | ||
4080 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
4081 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP && | |
4082 | pi->sub_type == BGP_ROUTE_STATIC) | |
4083 | break; | |
4084 | if (!pi) | |
4085 | return; | |
4086 | ||
4087 | /* | |
4088 | * VNI table MAC-IP prefixes don't have MAC so make sure it's | |
4089 | * set from path info here. | |
4090 | */ | |
4091 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4092 | if (is_evpn_prefix_ipaddr_none(evp)) { | |
4093 | /* VNI MAC -> Global */ | |
4094 | evpn_type2_prefix_global_copy( | |
4095 | &tmp_evp, evp, NULL /* mac */, | |
4096 | evpn_type2_path_info_get_ip(pi)); | |
4097 | } else { | |
4098 | /* VNI IP -> Global */ | |
4099 | evpn_type2_prefix_global_copy( | |
4100 | &tmp_evp, evp, evpn_type2_path_info_get_mac(pi), | |
4101 | NULL /* ip */); | |
4102 | } | |
4103 | } else { | |
4104 | memcpy(&tmp_evp, evp, sizeof(tmp_evp)); | |
4105 | } | |
4106 | ||
4107 | /* Create route in global routing table using this route entry's | |
4108 | * attribute. | |
4109 | */ | |
4110 | attr = pi->attr; | |
4111 | global_dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, | |
4112 | &tmp_evp, &vpn->prd, NULL); | |
4113 | assert(global_dest); | |
4114 | ||
4115 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4116 | /* Type-2 route */ | |
4117 | update_evpn_route_entry( | |
4118 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
4119 | NULL /* ip */, 1, &global_pi, 0, | |
4120 | mac_mobility_seqnum(attr), false /* setup_sync */, | |
4121 | NULL /* old_is_sync */); | |
4122 | } else { | |
4123 | /* Type-1 route */ | |
4124 | struct bgp_evpn_es *es; | |
4125 | int route_changed = 0; | |
4126 | ||
4127 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
4128 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, global_dest, | |
4129 | attr, &global_pi, &route_changed); | |
4130 | } | |
4131 | ||
4132 | /* Schedule for processing and unlock node. */ | |
4133 | bgp_process(bgp, global_dest, afi, safi); | |
4134 | bgp_dest_unlock_node(global_dest); | |
4135 | } | |
4136 | ||
90e60aa7 | 4137 | /* |
4138 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
4139 | * change. Note that the processing is done only on the global route table | |
4140 | * using routes that already exist in the per-VNI table. | |
4141 | */ | |
852d9f97 | 4142 | static void update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 4143 | { |
4144 | struct prefix_evpn p; | |
9bcb3eef | 4145 | struct bgp_dest *dest, *global_dest; |
852d9f97 | 4146 | struct bgp_path_info *pi; |
d62a17ae | 4147 | struct attr *attr; |
4148 | afi_t afi = AFI_L2VPN; | |
4149 | safi_t safi = SAFI_EVPN; | |
4150 | ||
4151 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
4152 | * attributes to create and advertise the type-3 route for this VNI | |
4153 | * in the global table. | |
fd069644 DS |
4154 | * |
4155 | * RT-3 only if doing head-end replication | |
d62a17ae | 4156 | */ |
833b8a50 AK |
4157 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
4158 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 4159 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
852d9f97 | 4160 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
9bcb3eef | 4161 | if (!dest) /* unexpected */ |
852d9f97 | 4162 | return; |
9bcb3eef | 4163 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
4164 | if (pi->peer == bgp->peer_self && |
4165 | pi->type == ZEBRA_ROUTE_BGP | |
4166 | && pi->sub_type == BGP_ROUTE_STATIC) | |
4167 | break; | |
fd43ffd9 DA |
4168 | if (!pi) { |
4169 | bgp_dest_unlock_node(dest); | |
852d9f97 | 4170 | return; |
fd43ffd9 | 4171 | } |
852d9f97 | 4172 | |
fd069644 | 4173 | attr = pi->attr; |
d62a17ae | 4174 | |
34c7f35f SW |
4175 | global_dest = bgp_evpn_global_node_get( |
4176 | bgp->rib[afi][safi], afi, safi, &p, &vpn->prd, NULL); | |
4177 | update_evpn_route_entry( | |
4178 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
852d9f97 | 4179 | NULL /* ip */, 1, &pi, 0, mac_mobility_seqnum(attr), |
34c7f35f | 4180 | false /* setup_sync */, NULL /* old_is_sync */); |
d62a17ae | 4181 | |
fd069644 | 4182 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
4183 | bgp_process(bgp, global_dest, afi, safi); |
4184 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 4185 | } |
d62a17ae | 4186 | |
852d9f97 SW |
4187 | /* Now, walk this VNI's MAC & IP route table and use the route and its |
4188 | * attribute to create and schedule route in global table. | |
d62a17ae | 4189 | */ |
852d9f97 SW |
4190 | for (dest = bgp_table_top(vpn->mac_table); dest; |
4191 | dest = bgp_route_next(dest)) | |
4192 | update_advertise_vni_route(bgp, vpn, dest); | |
d62a17ae | 4193 | |
852d9f97 SW |
4194 | for (dest = bgp_table_top(vpn->ip_table); dest; |
4195 | dest = bgp_route_next(dest)) | |
4196 | update_advertise_vni_route(bgp, vpn, dest); | |
90e60aa7 | 4197 | } |
4198 | ||
4199 | /* | |
4200 | * Delete (and withdraw) local routes for a VNI - only from the global | |
4201 | * table. Invoked upon router-id change. | |
4202 | */ | |
d62a17ae | 4203 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4204 | { |
d62a17ae | 4205 | struct prefix_evpn p; |
9bcb3eef | 4206 | struct bgp_dest *global_dest; |
40381db7 | 4207 | struct bgp_path_info *pi; |
d62a17ae | 4208 | afi_t afi = AFI_L2VPN; |
4209 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 4210 | |
d62a17ae | 4211 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
4212 | * for this VNI - from the global table. | |
4213 | */ | |
17151ae9 | 4214 | delete_global_type2_routes(bgp, vpn); |
90e60aa7 | 4215 | |
d62a17ae | 4216 | /* Remove type-3 route for this VNI from global table. */ |
4217 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
34c7f35f SW |
4218 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
4219 | safi, &p, &vpn->prd, NULL); | |
9bcb3eef | 4220 | if (global_dest) { |
d62a17ae | 4221 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 4222 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 4223 | |
d62a17ae | 4224 | /* Schedule for processing - withdraws to peers happen from |
4225 | * this table. | |
4226 | */ | |
40381db7 | 4227 | if (pi) |
9bcb3eef DS |
4228 | bgp_process(bgp, global_dest, afi, safi); |
4229 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 4230 | } |
90e60aa7 | 4231 | |
d60f63f0 AD |
4232 | |
4233 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 4234 | return 0; |
90e60aa7 | 4235 | } |
4236 | ||
2d48ee25 | 4237 | /* |
4238 | * Handle router-id change. Update and advertise local routes corresponding | |
4239 | * to this VNI from peers. Note that this is invoked after updating the | |
4240 | * router-id. The routes in the per-VNI table are used to create routes in | |
4241 | * the global table and schedule them. | |
4242 | */ | |
e3b78da8 | 4243 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4244 | { |
e3b78da8 | 4245 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4246 | |
d62a17ae | 4247 | /* Skip VNIs with configured RD. */ |
4248 | if (is_rd_configured(vpn)) | |
4249 | return; | |
2d48ee25 | 4250 | |
d62a17ae | 4251 | bgp_evpn_derive_auto_rd(bgp, vpn); |
4252 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 4253 | } |
4254 | ||
4255 | /* | |
4256 | * Handle router-id change. Delete and withdraw local routes corresponding | |
4257 | * to this VNI from peers. Note that this is invoked prior to updating | |
4258 | * the router-id and is done only on the global route table, the routes | |
4259 | * are needed in the per-VNI table to re-advertise with new router id. | |
4260 | */ | |
e3b78da8 | 4261 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4262 | { |
e3b78da8 | 4263 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4264 | |
d62a17ae | 4265 | /* Skip VNIs with configured RD. */ |
4266 | if (is_rd_configured(vpn)) | |
4267 | return; | |
2d48ee25 | 4268 | |
d62a17ae | 4269 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 4270 | } |
4271 | ||
fd069644 DS |
4272 | /* |
4273 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
4274 | * This is invoked upon flooding mode changing to head-end replication. | |
4275 | */ | |
e3b78da8 | 4276 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4277 | { |
e3b78da8 | 4278 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4279 | struct bgp *bgp = data; |
4280 | struct prefix_evpn p; | |
4281 | ||
833b8a50 AK |
4282 | if (!vpn || !is_vni_live(vpn) || |
4283 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
4284 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
4285 | return; |
4286 | ||
4287 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 4288 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
4289 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
4290 | "Type3 route creation failure for VNI %u", vpn->vni); | |
4291 | } | |
4292 | ||
4293 | /* | |
4294 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
4295 | * This is invoked upon flooding mode changing to drop BUM packets. | |
4296 | */ | |
e3b78da8 | 4297 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4298 | { |
e3b78da8 | 4299 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4300 | struct bgp *bgp = data; |
4301 | struct prefix_evpn p; | |
4302 | ||
4303 | if (!vpn || !is_vni_live(vpn)) | |
4304 | return; | |
4305 | ||
4306 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4307 | delete_evpn_route(bgp, vpn, &p); | |
4308 | } | |
4309 | ||
128ea8ab | 4310 | /* |
4311 | * Process received EVPN type-2 route (advertise or withdraw). | |
4312 | */ | |
d62a17ae | 4313 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4314 | struct attr *attr, uint8_t *pfx, int psize, |
4315 | uint32_t addpath_id) | |
d62a17ae | 4316 | { |
4317 | struct prefix_rd prd; | |
e121d831 QY |
4318 | struct prefix_evpn p = {}; |
4319 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
4320 | uint8_t ipaddr_len; |
4321 | uint8_t macaddr_len; | |
e121d831 QY |
4322 | /* holds the VNI(s) as in packet */ |
4323 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 4324 | uint32_t num_labels = 0; |
554cd77a | 4325 | uint32_t eth_tag; |
d62a17ae | 4326 | int ret; |
4327 | ||
4328 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
4329 | * additional 3 bytes if there is a second label (VNI): | |
4330 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
4331 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
4332 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
4333 | */ | |
4334 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
4335 | && psize != 40 && psize != 52) { | |
e50f7cfd | 4336 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4337 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
4338 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4339 | return -1; |
4340 | } | |
4341 | ||
e121d831 QY |
4342 | struct stream *pkt = stream_new(psize); |
4343 | stream_put(pkt, pfx, psize); | |
554cd77a | 4344 | |
d62a17ae | 4345 | /* Make prefix_rd */ |
4346 | prd.family = AF_UNSPEC; | |
4347 | prd.prefixlen = 64; | |
e121d831 QY |
4348 | |
4349 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 4350 | |
4351 | /* Make EVPN prefix. */ | |
b03b8898 | 4352 | p.family = AF_EVPN; |
50f74cf1 | 4353 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4354 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
4355 | ||
554cd77a | 4356 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 4357 | if (attr) { |
e121d831 QY |
4358 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
4359 | ||
74efb822 | 4360 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
4361 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
4362 | else | |
4363 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
4364 | } else { |
4365 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 4366 | } |
d62a17ae | 4367 | |
554cd77a | 4368 | /* Copy Ethernet Tag */ |
e121d831 | 4369 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 4370 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4371 | |
4372 | /* Get the MAC Addr len */ | |
e121d831 | 4373 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 4374 | |
4375 | /* Get the MAC Addr */ | |
28328ea9 | 4376 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 4377 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 4378 | } else { |
af4c2728 | 4379 | flog_err( |
e50f7cfd | 4380 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4381 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
4382 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 4383 | goto fail; |
d62a17ae | 4384 | } |
4385 | ||
4386 | ||
4387 | /* Get the IP. */ | |
e121d831 QY |
4388 | STREAM_GETC(pkt, ipaddr_len); |
4389 | ||
d62a17ae | 4390 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
4391 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 4392 | flog_err( |
e50f7cfd | 4393 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4394 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
4395 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 4396 | goto fail; |
d62a17ae | 4397 | } |
4398 | ||
4399 | if (ipaddr_len) { | |
4400 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4401 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4402 | ? IPADDR_V4 |
4403 | : IPADDR_V6; | |
e121d831 | 4404 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 4405 | } |
d62a17ae | 4406 | |
b57ba6d2 | 4407 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 4408 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4409 | num_labels++; |
e121d831 | 4410 | |
b57ba6d2 | 4411 | /* Do we have a second VNI? */ |
e121d831 | 4412 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 4413 | num_labels++; |
e121d831 | 4414 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4415 | } |
d62a17ae | 4416 | |
4417 | /* Process the route. */ | |
4418 | if (attr) | |
4419 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4420 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4421 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 4422 | else |
4423 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4424 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4425 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
4426 | goto done; |
4427 | ||
4428 | fail: | |
4429 | stream_failure: | |
4430 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4431 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
4432 | peer->bgp->vrf_id, peer->host); | |
4433 | ret = -1; | |
4434 | done: | |
4435 | stream_free(pkt); | |
d62a17ae | 4436 | return ret; |
128ea8ab | 4437 | } |
4438 | ||
4439 | /* | |
4440 | * Process received EVPN type-3 route (advertise or withdraw). | |
4441 | */ | |
d62a17ae | 4442 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4443 | struct attr *attr, uint8_t *pfx, int psize, |
4444 | uint32_t addpath_id) | |
d62a17ae | 4445 | { |
4446 | struct prefix_rd prd; | |
4447 | struct prefix_evpn p; | |
d7c0a89a | 4448 | uint8_t ipaddr_len; |
554cd77a | 4449 | uint32_t eth_tag; |
d62a17ae | 4450 | int ret; |
4451 | ||
4452 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4453 | * IP len (1) and IP (4 or 16). | |
4454 | */ | |
4455 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4456 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4457 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4458 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4459 | return -1; |
4460 | } | |
4461 | ||
7fd077aa | 4462 | /* If PMSI is present, log if it is anything other than IR. |
4463 | * Note: We just simply ignore the values as it is not clear if | |
4464 | * doing anything else is better. | |
4465 | */ | |
4466 | if (attr && | |
4467 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
4468 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
4469 | ||
4470 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
4471 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4472 | flog_warn( | |
4473 | EC_BGP_EVPN_PMSI_PRESENT, | |
4474 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4475 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 4476 | } |
4477 | } | |
4478 | ||
d62a17ae | 4479 | /* Make prefix_rd */ |
4480 | prd.family = AF_UNSPEC; | |
4481 | prd.prefixlen = 64; | |
4482 | memcpy(&prd.val, pfx, 8); | |
4483 | pfx += 8; | |
4484 | ||
4485 | /* Make EVPN prefix. */ | |
6006b807 | 4486 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4487 | p.family = AF_EVPN; |
50f74cf1 | 4488 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4489 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4490 | ||
554cd77a VB |
4491 | /* Copy Ethernet Tag */ |
4492 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4493 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4494 | pfx += 4; |
4495 | ||
4496 | /* Get the IP. */ | |
4497 | ipaddr_len = *pfx++; | |
4498 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4499 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4500 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4501 | } else { |
af4c2728 | 4502 | flog_err( |
e50f7cfd | 4503 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4504 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4505 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4506 | return -1; | |
4507 | } | |
4508 | ||
4509 | /* Process the route. */ | |
4510 | if (attr) | |
4511 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4512 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4513 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4514 | else |
4515 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4516 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4517 | &prd, NULL, 0, NULL); |
d62a17ae | 4518 | return ret; |
128ea8ab | 4519 | } |
4520 | ||
4521 | /* | |
4522 | * Process received EVPN type-5 route (advertise or withdraw). | |
4523 | */ | |
d62a17ae | 4524 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4525 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4526 | uint32_t addpath_id) |
d62a17ae | 4527 | { |
4528 | struct prefix_rd prd; | |
4529 | struct prefix_evpn p; | |
4530 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4531 | uint8_t ippfx_len; |
4532 | uint32_t eth_tag; | |
b57ba6d2 | 4533 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4534 | int ret; |
66ff6089 | 4535 | bool is_valid_update = true; |
d62a17ae | 4536 | |
4537 | /* Type-5 route should be 34 or 58 bytes: | |
4538 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4539 | * GW (4 or 16) and VNI (3). | |
4540 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4541 | */ | |
4542 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4543 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4544 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4545 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4546 | return -1; |
4547 | } | |
4548 | ||
4549 | /* Make prefix_rd */ | |
4550 | prd.family = AF_UNSPEC; | |
4551 | prd.prefixlen = 64; | |
4552 | memcpy(&prd.val, pfx, 8); | |
4553 | pfx += 8; | |
4554 | ||
4555 | /* Make EVPN prefix. */ | |
6006b807 | 4556 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4557 | p.family = AF_EVPN; |
50f74cf1 | 4558 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4559 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4560 | ||
4561 | /* Additional information outside of prefix - ESI and GW IP */ | |
4562 | memset(&evpn, 0, sizeof(evpn)); | |
4563 | ||
66ff6089 | 4564 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4565 | if (attr) |
66ff6089 | 4566 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4567 | pfx += ESI_BYTES; |
d62a17ae | 4568 | |
4569 | /* Fetch Ethernet Tag. */ | |
4570 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4571 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4572 | pfx += 4; |
4573 | ||
4574 | /* Fetch IP prefix length. */ | |
4575 | ippfx_len = *pfx++; | |
4576 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4577 | flog_err( |
e50f7cfd | 4578 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4579 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4580 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4581 | return -1; | |
4582 | } | |
3714a385 | 4583 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4584 | |
4585 | /* Determine IPv4 or IPv6 prefix */ | |
4586 | /* Since the address and GW are from the same family, this just becomes | |
4587 | * a simple check on the total size. | |
4588 | */ | |
4589 | if (psize == 34) { | |
3714a385 | 4590 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4591 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4592 | pfx += 4; |
860e740b IR |
4593 | SET_IPADDR_V4(&evpn.gw_ip); |
4594 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4595 | pfx += 4; |
d62a17ae | 4596 | } else { |
3714a385 | 4597 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4598 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4599 | IPV6_MAX_BYTELEN); | |
4600 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4601 | SET_IPADDR_V6(&evpn.gw_ip); |
4602 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4603 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4604 | } |
4605 | ||
b57ba6d2 MK |
4606 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4607 | memset(&label, 0, sizeof(label)); | |
4608 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4609 | |
4610 | /* | |
4611 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4612 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4613 | * field | |
6b11bd8d | 4614 | */ |
d62a17ae | 4615 | |
66ff6089 AD |
4616 | /* |
4617 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4618 | * at the same time is should be treated as withdraw | |
4619 | */ | |
860e740b IR |
4620 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4621 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4622 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4623 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4624 | peer->host); | |
4625 | is_valid_update = false; | |
4626 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4627 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4628 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4629 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4630 | if (attr) { |
860e740b IR |
4631 | if (is_zero_mac(&attr->rmac) && |
4632 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4633 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4634 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4635 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4636 | peer->host); | |
c6ec0c74 | 4637 | is_valid_update = false; |
66ff6089 | 4638 | } |
c6ec0c74 KA |
4639 | |
4640 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4641 | is_valid_update = false; | |
4642 | } | |
4643 | ||
d62a17ae | 4644 | /* Process the route. */ |
66ff6089 | 4645 | if (attr && is_valid_update) |
d62a17ae | 4646 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4647 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4648 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4649 | else { |
4650 | if (!is_valid_update) { | |
4651 | char attr_str[BUFSIZ] = {0}; | |
4652 | ||
4653 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4654 | zlog_warn( | |
4655 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4656 | peer->hostname, peer->bgp->vrf_id, &p, | |
4657 | attr_str); | |
4658 | } | |
d62a17ae | 4659 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4660 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4661 | &prd, &label, 1, &evpn); |
66ff6089 | 4662 | } |
d62a17ae | 4663 | |
4664 | return ret; | |
4665 | } | |
4666 | ||
5f040085 DS |
4667 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4668 | const struct prefix_rd *prd, | |
4669 | mpls_label_t *label, uint32_t num_labels, | |
4670 | struct attr *attr) | |
d62a17ae | 4671 | { |
4672 | int len; | |
4673 | char temp[16]; | |
5f040085 | 4674 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4675 | |
b5605493 | 4676 | memset(&temp, 0, sizeof(temp)); |
b03b8898 | 4677 | if (p->family != AF_EVPN) |
d62a17ae | 4678 | return; |
4679 | p_evpn_p = &(p->u.prefix_evpn); | |
4680 | ||
e9fc2840 | 4681 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4682 | IP and GW-IP have to be both ipv4 or ipv6 |
4683 | */ | |
3714a385 | 4684 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4685 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4686 | else |
e9fc2840 | 4687 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4688 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4689 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4690 | stream_put(s, prd->val, 8); | |
6c995628 | 4691 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4692 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4693 | else |
c44ab6f1 | 4694 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4695 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4696 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4697 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4698 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4699 | else |
3714a385 | 4700 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4701 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4702 | const struct bgp_route_evpn *evpn_overlay = |
4703 | bgp_attr_get_evpn_overlay(attr); | |
4704 | ||
3714a385 | 4705 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4706 | stream_put_ipv4(s, |
4707 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4708 | else |
860e740b | 4709 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4710 | } else { |
3714a385 | 4711 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4712 | stream_put_ipv4(s, 0); |
4713 | else | |
4714 | stream_put(s, &temp, 16); | |
4715 | } | |
4716 | ||
b57ba6d2 | 4717 | if (num_labels) |
d62a17ae | 4718 | stream_put(s, label, 3); |
4719 | else | |
4720 | stream_put3(s, 0); | |
128ea8ab | 4721 | } |
4722 | ||
4723 | /* | |
4724 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4725 | */ | |
e3b78da8 | 4726 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4727 | { |
e3b78da8 | 4728 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4729 | |
d62a17ae | 4730 | /* Remove EVPN routes and schedule for processing. */ |
4731 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4732 | |
d62a17ae | 4733 | /* Clear "live" flag and see if hash needs to be freed. */ |
4734 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4735 | if (!is_vni_configured(vpn)) | |
4736 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4737 | } |
4738 | ||
4739 | /* | |
4740 | * Free a VNI entry; iterator function called during cleanup. | |
4741 | */ | |
e3b78da8 | 4742 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4743 | { |
e3b78da8 | 4744 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4745 | |
d62a17ae | 4746 | delete_all_vni_routes(bgp, vpn); |
4747 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4748 | } |
4749 | ||
c581d8b0 MK |
4750 | /* |
4751 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4752 | */ | |
4753 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4754 | { | |
5e53dce3 | 4755 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4756 | |
c581d8b0 | 4757 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4758 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4759 | ||
4760 | /* Map RT to VRF */ | |
5e53dce3 T |
4761 | bgp_evpn = bgp_get_evpn(); |
4762 | if (!bgp_evpn) | |
10ebe1ab MK |
4763 | return; |
4764 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4765 | } |
4766 | ||
4767 | /* | |
4768 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4769 | */ | |
4770 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4771 | { | |
4772 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4773 | } | |
4774 | ||
4775 | /* | |
4776 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4777 | */ | |
4778 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4779 | { | |
4780 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4781 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4782 | } | |
4783 | ||
4784 | /* | |
4785 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4786 | */ | |
4787 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4788 | { | |
4789 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4790 | } | |
128ea8ab | 4791 | |
f1f8b53c MK |
4792 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4793 | { | |
5e53dce3 | 4794 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4795 | struct listnode *node = NULL; |
4796 | struct bgpevpn *vpn = NULL; | |
4797 | ||
5e53dce3 T |
4798 | bgp_evpn = bgp_get_evpn(); |
4799 | if (!bgp_evpn) | |
f1f8b53c MK |
4800 | return; |
4801 | ||
4992b4ae MK |
4802 | /* update all type-5 routes */ |
4803 | update_advertise_vrf_routes(bgp_vrf); | |
4804 | ||
4805 | /* update all type-2 routes */ | |
f1f8b53c | 4806 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4807 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4808 | } |
4809 | ||
bf1061d8 VB |
4810 | /* |
4811 | * Handle autort change for a given VNI. | |
4812 | */ | |
e3b78da8 | 4813 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4814 | { |
e3b78da8 | 4815 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4816 | |
bf1061d8 VB |
4817 | if (!is_import_rt_configured(vpn)) { |
4818 | if (is_vni_live(vpn)) | |
4819 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4820 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4821 | list_delete_all_node(vpn->import_rtl); |
4822 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4823 | if (is_vni_live(vpn)) | |
4824 | bgp_evpn_install_routes(bgp, vpn); | |
4825 | } | |
4826 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4827 | list_delete_all_node(vpn->export_rtl); |
4828 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4829 | if (is_vni_live(vpn)) | |
4830 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4831 | } | |
4832 | } | |
4833 | ||
4204021e PG |
4834 | /* |
4835 | * Handle autort change for L3VNI. | |
4836 | */ | |
4837 | static void update_autort_l3vni(struct bgp *bgp) | |
4838 | { | |
4839 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4840 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4841 | return; | |
4842 | ||
4843 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4844 | if (is_l3vni_live(bgp)) | |
4845 | uninstall_routes_for_vrf(bgp); | |
4846 | ||
4847 | /* Cleanup the RT to VRF mapping */ | |
4848 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4849 | ||
4850 | /* Remove auto generated RT */ | |
4851 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4852 | ||
4853 | list_delete_all_node(bgp->vrf_import_rtl); | |
4854 | ||
4855 | /* Map auto derive or configured RTs */ | |
4856 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4857 | } | |
4858 | ||
4859 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4860 | list_delete_all_node(bgp->vrf_export_rtl); | |
4861 | ||
4862 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4863 | ||
4864 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4865 | ||
4866 | if (is_l3vni_live(bgp)) | |
4867 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4868 | } | |
4869 | ||
4870 | if (!is_l3vni_live(bgp)) | |
4871 | return; | |
4872 | ||
4873 | /* advertise type-5 routes if needed */ | |
4874 | update_advertise_vrf_routes(bgp); | |
4875 | ||
4876 | /* install all remote routes belonging to this l3vni | |
4877 | * into corresponding vrf | |
4878 | */ | |
4879 | install_routes_for_vrf(bgp); | |
4880 | } | |
4881 | ||
128ea8ab | 4882 | /* |
4883 | * Public functions. | |
4884 | */ | |
4885 | ||
5424b7ba | 4886 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4887 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4888 | afi_t afi, safi_t safi) |
4889 | { | |
4890 | int ret = 0; | |
4891 | struct prefix_evpn evp; | |
5424b7ba | 4892 | |
31310b25 | 4893 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4894 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4895 | if (ret) |
af4c2728 | 4896 | flog_err( |
e50f7cfd | 4897 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4898 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4899 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4900 | } |
4901 | ||
342dd0c6 | 4902 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4903 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4904 | { |
4905 | struct bgp_table *table = NULL; | |
9bcb3eef | 4906 | struct bgp_dest *dest = NULL; |
40381db7 | 4907 | struct bgp_path_info *pi; |
342dd0c6 | 4908 | |
053905d2 | 4909 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4910 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4911 | /* Only care about "selected" routes. Also ensure that |
4912 | * these are routes that are injectable into EVPN. | |
4913 | */ | |
25f2ca53 | 4914 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4915 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4916 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4917 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4918 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4919 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4920 | safi); |
25f2ca53 | 4921 | break; |
4922 | } | |
4923 | } | |
4924 | } | |
5424b7ba | 4925 | } |
342dd0c6 | 4926 | |
5fd9c12b KA |
4927 | /* |
4928 | * evpn - enable advertisement of default g/w | |
4929 | */ | |
4930 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4931 | safi_t safi, bool add) | |
4932 | { | |
4933 | struct prefix ip_prefix; | |
4934 | ||
4935 | /* form the default prefix 0.0.0.0/0 */ | |
6006b807 | 4936 | memset(&ip_prefix, 0, sizeof(ip_prefix)); |
5fd9c12b KA |
4937 | ip_prefix.family = afi2family(afi); |
4938 | ||
4939 | if (add) { | |
4940 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4941 | NULL, afi, safi); | |
4942 | } else { | |
4943 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4944 | afi, safi); | |
4945 | } | |
4946 | } | |
4947 | ||
4948 | ||
2f69f6d3 | 4949 | /* |
4950 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4951 | * to this function correspond to those of the source IP prefix (best | |
4952 | * path in the case of the attr. In the case of a local prefix (when we | |
4953 | * are advertising local subnets), the src_attr will be NULL. | |
4954 | */ | |
bd494ec5 | 4955 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4956 | struct attr *src_attr, afi_t afi, |
4957 | safi_t safi) | |
5424b7ba MK |
4958 | { |
4959 | int ret = 0; | |
4960 | struct prefix_evpn evp; | |
7c82b312 | 4961 | |
31310b25 | 4962 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 4963 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 4964 | if (ret) |
e50f7cfd | 4965 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4966 | "%u: Failed to create type-5 route for prefix %pFX", |
4967 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4968 | } |
4969 | ||
2f69f6d3 | 4970 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4971 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4972 | * advertisement is enabled. | |
4973 | */ | |
996c9314 LB |
4974 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4975 | safi_t safi) | |
342dd0c6 | 4976 | { |
4977 | struct bgp_table *table = NULL; | |
9bcb3eef | 4978 | struct bgp_dest *dest = NULL; |
40381db7 | 4979 | struct bgp_path_info *pi; |
342dd0c6 | 4980 | |
053905d2 | 4981 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4982 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4983 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4984 | * attribute. Also, ensure that the route is injectable |
4985 | * into EVPN. | |
2f69f6d3 | 4986 | * TODO: Support for AddPath for EVPN. |
4987 | */ | |
9bcb3eef | 4988 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4989 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4990 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4991 | |
4992 | /* apply the route-map */ | |
4993 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4994 | route_map_result_t ret; |
e34291b8 | 4995 | struct bgp_path_info tmp_pi; |
4996 | struct bgp_path_info_extra tmp_pie; | |
4997 | struct attr tmp_attr; | |
4998 | ||
4999 | tmp_attr = *pi->attr; | |
5000 | ||
5001 | /* Fill temp path_info */ | |
9bcb3eef DS |
5002 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
5003 | dest, pi, pi->peer, | |
5004 | &tmp_attr); | |
e34291b8 | 5005 | |
5006 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 5007 | |
996c9314 LB |
5008 | ret = route_map_apply( |
5009 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
5010 | .map, | |
9bcb3eef | 5011 | bgp_dest_get_prefix(dest), |
1782514f | 5012 | &tmp_pi); |
e34291b8 | 5013 | if (ret == RMAP_DENYMATCH) { |
5014 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 5015 | continue; |
e34291b8 | 5016 | } |
5017 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5018 | bgp_vrf, |
9bcb3eef | 5019 | bgp_dest_get_prefix(dest), |
b54892e0 | 5020 | &tmp_attr, afi, safi); |
e34291b8 | 5021 | } else |
5022 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5023 | bgp_vrf, |
9bcb3eef | 5024 | bgp_dest_get_prefix(dest), |
b54892e0 | 5025 | pi->attr, afi, safi); |
2f69f6d3 | 5026 | break; |
5027 | } | |
5028 | } | |
31310b25 | 5029 | } |
342dd0c6 | 5030 | } |
5031 | ||
996c9314 | 5032 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
5033 | { |
5034 | struct listnode *node, *nnode, *node_to_del; | |
5035 | struct ecommunity *ecom, *ecom_auto; | |
5036 | struct ecommunity_val eval; | |
5037 | ||
bf1061d8 VB |
5038 | if (bgp->advertise_autort_rfc8365) |
5039 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
5040 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
5041 | ||
5042 | ecom_auto = ecommunity_new(); | |
1207a5bc | 5043 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
5044 | node_to_del = NULL; |
5045 | ||
5046 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
5047 | if (ecommunity_match(ecom, ecom_auto)) { | |
5048 | ecommunity_free(&ecom); | |
5049 | node_to_del = node; | |
d74a6cc1 | 5050 | break; |
c581d8b0 MK |
5051 | } |
5052 | } | |
5053 | ||
5054 | if (node_to_del) | |
5055 | list_delete_node(rtl, node_to_del); | |
5056 | ||
5057 | ecommunity_free(&ecom_auto); | |
5058 | } | |
5059 | ||
5060 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 5061 | struct ecommunity *ecomadd) |
c581d8b0 | 5062 | { |
5ba238b7 | 5063 | /* uninstall routes from vrf */ |
3d0b43d7 | 5064 | if (is_l3vni_live(bgp_vrf)) |
5065 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
5066 | |
5067 | /* Cleanup the RT to VRF mapping */ | |
5068 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5069 | ||
c581d8b0 MK |
5070 | /* Remove auto generated RT */ |
5071 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
5072 | ||
5073 | /* Add the newly configured RT to RT list */ | |
5074 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
5075 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
5076 | ||
3d0b43d7 | 5077 | /* map VRF to its RTs and install routes matching the new RTs */ |
5078 | if (is_l3vni_live(bgp_vrf)) { | |
5079 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5080 | install_routes_for_vrf(bgp_vrf); | |
5081 | } | |
c581d8b0 MK |
5082 | } |
5083 | ||
5084 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5085 | struct ecommunity *ecomdel) | |
5086 | { | |
5087 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
5088 | struct ecommunity *ecom = NULL; | |
5089 | ||
5ba238b7 | 5090 | /* uninstall routes from vrf */ |
3d0b43d7 | 5091 | if (is_l3vni_live(bgp_vrf)) |
5092 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
5093 | |
5094 | /* Cleanup the RT to VRF mapping */ | |
5095 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5096 | ||
c581d8b0 MK |
5097 | /* remove the RT from the RT list */ |
5098 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5099 | if (ecommunity_match(ecom, ecomdel)) { | |
5100 | ecommunity_free(&ecom); | |
5101 | node_to_del = node; | |
5102 | break; | |
5103 | } | |
5104 | } | |
5105 | ||
5106 | if (node_to_del) | |
5107 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
5108 | ||
b3a4db3d | 5109 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 5110 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 5111 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 5112 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
5113 | if (is_l3vni_live(bgp_vrf)) |
5114 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5115 | } |
5116 | ||
3d0b43d7 | 5117 | /* map VRFs to its RTs and install routes matching this new RT */ |
5118 | if (is_l3vni_live(bgp_vrf)) { | |
5119 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5120 | install_routes_for_vrf(bgp_vrf); | |
5121 | } | |
c581d8b0 MK |
5122 | } |
5123 | ||
5124 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
5125 | struct ecommunity *ecomadd) | |
5126 | { | |
5127 | /* remove auto-generated RT */ | |
5128 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
5129 | ||
5130 | /* Add the new RT to the RT list */ | |
5131 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
5132 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
5133 | ||
ebdc9e64 AD |
5134 | if (is_l3vni_live(bgp_vrf)) |
5135 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5136 | } |
5137 | ||
5138 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
5139 | struct ecommunity *ecomdel) | |
5140 | { | |
5141 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
5142 | struct ecommunity *ecom = NULL; | |
5143 | ||
5144 | /* Remove the RT from the RT list */ | |
5145 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
5146 | if (ecommunity_match(ecom, ecomdel)) { | |
5147 | ecommunity_free(&ecom); | |
5148 | node_to_del = node; | |
5149 | break; | |
5150 | } | |
5151 | } | |
5152 | ||
5153 | if (node_to_del) | |
5154 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
5155 | ||
1525e99f DS |
5156 | /* |
5157 | * Temporary assert to make SA happy. | |
5158 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
5159 | * which means that SA is going to complain about | |
5160 | * the list_isempty call, which doesn't NULL check. | |
5161 | * So until we get this situation cleaned up, here | |
5162 | * we are. | |
5163 | */ | |
5164 | assert(bgp_vrf->vrf_export_rtl); | |
5165 | ||
c581d8b0 | 5166 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 5167 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 5168 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
5169 | if (is_l3vni_live(bgp_vrf)) |
5170 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5171 | } |
5172 | ||
ebdc9e64 AD |
5173 | if (is_l3vni_live(bgp_vrf)) |
5174 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5175 | } |
5176 | ||
2d48ee25 | 5177 | /* |
5178 | * Handle change to BGP router id. This is invoked twice by the change | |
5179 | * handler, first before the router id has been changed and then after | |
5180 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 5181 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 5182 | * will result in the routes being re-advertised. |
5183 | */ | |
d62a17ae | 5184 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 5185 | { |
5394a276 CS |
5186 | struct listnode *node; |
5187 | struct bgp *bgp_vrf; | |
5188 | ||
676f83b9 | 5189 | if (withdraw) { |
5190 | ||
5191 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 5192 | stored in the global table for this vrf |
5193 | */ | |
80b140af | 5194 | withdraw_router_id_vrf(bgp); |
676f83b9 | 5195 | |
5196 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 5197 | * L2-VNIs |
5198 | */ | |
d62a17ae | 5199 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5200 | (void (*)(struct hash_bucket *, |
d62a17ae | 5201 | void *))withdraw_router_id_vni, |
5202 | bgp); | |
5394a276 CS |
5203 | |
5204 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5205 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5206 | if (bgp_vrf->evpn_info->advertise_pip && | |
5207 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5208 | == INADDR_ANY)) | |
5209 | bgp_vrf->evpn_info->pip_ip.s_addr | |
5210 | = INADDR_ANY; | |
5211 | } | |
5212 | } | |
676f83b9 | 5213 | } else { |
5214 | ||
5394a276 CS |
5215 | /* Assign new default instance router-id */ |
5216 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5217 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5218 | if (bgp_vrf->evpn_info->advertise_pip && | |
5219 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5220 | == INADDR_ANY)) { | |
5221 | bgp_vrf->evpn_info->pip_ip = | |
5222 | bgp->router_id; | |
5223 | /* advertise type-5 routes with | |
5224 | * new nexthop | |
5225 | */ | |
5226 | update_advertise_vrf_routes(bgp_vrf); | |
5227 | } | |
5228 | } | |
5229 | } | |
5230 | ||
676f83b9 | 5231 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 5232 | * RD |
5233 | */ | |
80b140af | 5234 | update_router_id_vrf(bgp); |
676f83b9 | 5235 | |
5236 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 5237 | * new RD |
5238 | */ | |
d62a17ae | 5239 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5240 | (void (*)(struct hash_bucket *, |
d62a17ae | 5241 | void *))update_router_id_vni, |
5242 | bgp); | |
676f83b9 | 5243 | } |
2d48ee25 | 5244 | } |
5245 | ||
bf1061d8 VB |
5246 | /* |
5247 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
5248 | */ | |
5249 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
5250 | { | |
5251 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 5252 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
5253 | void*))update_autort_vni, |
5254 | bgp); | |
4204021e PG |
5255 | if (bgp->l3vni) |
5256 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
5257 | } |
5258 | ||
90e60aa7 | 5259 | /* |
5260 | * Handle change to export RT - update and advertise local routes. | |
5261 | */ | |
d62a17ae | 5262 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5263 | { |
d62a17ae | 5264 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 5265 | } |
5266 | ||
996c9314 | 5267 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 5268 | { |
5269 | if (withdraw) | |
5270 | delete_withdraw_vrf_routes(bgp_vrf); | |
5271 | else | |
5272 | update_advertise_vrf_routes(bgp_vrf); | |
5273 | } | |
5274 | ||
90e60aa7 | 5275 | /* |
5276 | * Handle change to RD. This is invoked twice by the change handler, | |
5277 | * first before the RD has been changed and then after the RD has | |
5278 | * been changed. The first invocation will result in local routes | |
5279 | * of this VNI being deleted and withdrawn and the next will result | |
5280 | * in the routes being re-advertised. | |
5281 | */ | |
d62a17ae | 5282 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
5283 | int withdraw) | |
90e60aa7 | 5284 | { |
d62a17ae | 5285 | if (withdraw) |
5286 | delete_withdraw_vni_routes(bgp, vpn); | |
5287 | else | |
5288 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 5289 | } |
5290 | ||
5291 | /* | |
5292 | * Install routes for this VNI. Invoked upon change to Import RT. | |
5293 | */ | |
d62a17ae | 5294 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5295 | { |
d62a17ae | 5296 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 5297 | } |
5298 | ||
5299 | /* | |
5300 | * Uninstall all routes installed for this VNI. Invoked upon change | |
5301 | * to Import RT. | |
5302 | */ | |
d62a17ae | 5303 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5304 | { |
d62a17ae | 5305 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 5306 | } |
5307 | ||
b16031a2 | 5308 | /* |
b57ba6d2 | 5309 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 5310 | */ |
d7c0a89a | 5311 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 5312 | int len) |
b16031a2 | 5313 | { |
b57ba6d2 | 5314 | vni_t vni1, vni2; |
b16031a2 | 5315 | |
b57ba6d2 MK |
5316 | vni1 = label2vni(label); |
5317 | if (num_labels == 2) { | |
996c9314 | 5318 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
5319 | snprintf(buf, len, "%u/%u", vni1, vni2); |
5320 | } else | |
5321 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 5322 | return buf; |
b16031a2 | 5323 | } |
5324 | ||
9c92b5f7 MK |
5325 | /* |
5326 | * Function to convert evpn route to json format. | |
5327 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
5328 | */ | |
bd494ec5 | 5329 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 5330 | { |
b682f6de | 5331 | char buf1[ETHER_ADDR_STRLEN]; |
5332 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
5333 | uint8_t family; |
5334 | uint8_t prefixlen; | |
9c92b5f7 | 5335 | |
b682f6de | 5336 | if (!json) |
5337 | return; | |
9c92b5f7 | 5338 | |
44c69747 LK |
5339 | json_object_int_add(json, "routeType", p->prefix.route_type); |
5340 | ||
5341 | switch (p->prefix.route_type) { | |
5342 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5343 | json_object_int_add(json, "ethTag", |
44c69747 LK |
5344 | p->prefix.macip_addr.eth_tag); |
5345 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
5346 | json_object_string_add(json, "mac", | |
5347 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
5348 | sizeof(buf1))); | |
5349 | ||
5350 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
5351 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
5352 | AF_INET6; | |
5353 | prefixlen = (family == AF_INET) ? | |
5354 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
5355 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
5356 | buf2, PREFIX2STR_BUFFER); | |
5357 | json_object_int_add(json, "ipLen", prefixlen); | |
5358 | json_object_string_add(json, "ip", buf2); | |
5359 | } | |
5360 | break; | |
dff8f48d | 5361 | |
44c69747 LK |
5362 | case BGP_EVPN_IMET_ROUTE: |
5363 | json_object_int_add(json, "ethTag", | |
5364 | p->prefix.imet_addr.eth_tag); | |
5365 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5366 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
5367 | IPV6_MAX_BITLEN; | |
5368 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
5369 | PREFIX2STR_BUFFER); | |
5370 | json_object_int_add(json, "ipLen", prefixlen); | |
5371 | json_object_string_add(json, "ip", buf2); | |
5372 | break; | |
dff8f48d | 5373 | |
44c69747 LK |
5374 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5375 | json_object_int_add(json, "ethTag", | |
5376 | p->prefix.prefix_addr.eth_tag); | |
5377 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5378 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
5379 | buf2, sizeof(buf2)); | |
5380 | json_object_int_add(json, "ipLen", | |
5381 | p->prefix.prefix_addr.ip_prefix_length); | |
5382 | json_object_string_add(json, "ip", buf2); | |
5383 | break; | |
5384 | ||
5385 | default: | |
5386 | break; | |
dff8f48d | 5387 | } |
9c92b5f7 MK |
5388 | } |
5389 | ||
128ea8ab | 5390 | /* |
5391 | * Encode EVPN prefix in Update (MP_REACH) | |
5392 | */ | |
5f040085 DS |
5393 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5394 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 5395 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 5396 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 5397 | { |
5398 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5399 | int len, ipa_len = 0; |
d62a17ae | 5400 | |
be92fc9f | 5401 | if (addpath_capable) |
d62a17ae | 5402 | stream_putl(s, addpath_tx_id); |
5403 | ||
5404 | /* Route type */ | |
5405 | stream_putc(s, evp->prefix.route_type); | |
5406 | ||
5407 | switch (evp->prefix.route_type) { | |
5408 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5409 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5410 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5411 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5412 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5413 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5414 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5415 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5416 | len += 3; | |
5417 | stream_putc(s, len); | |
996c9314 | 5418 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 5419 | if (attr) |
c44ab6f1 | 5420 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
5421 | else |
5422 | stream_put(s, 0, 10); | |
3714a385 | 5423 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5424 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5425 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5426 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5427 | if (ipa_len) /* IP */ | |
5428 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5429 | ipa_len); | |
b57ba6d2 MK |
5430 | /* 1st label is the L2 VNI */ |
5431 | stream_put(s, label, BGP_LABEL_BYTES); | |
5432 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5433 | if (ipa_len && num_labels > 1) | |
996c9314 | 5434 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5435 | break; |
5436 | ||
5437 | case BGP_EVPN_IMET_ROUTE: | |
5438 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5439 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5440 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5441 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5442 | /* Originating Router's IP Addr */ | |
3714a385 | 5443 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5444 | break; |
5445 | ||
50f74cf1 | 5446 | case BGP_EVPN_ES_ROUTE: |
5447 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5448 | stream_put(s, prd->val, 8); /* RD */ | |
5449 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5450 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5451 | /* VTEP IP */ |
5452 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5453 | break; |
5454 | ||
c44ab6f1 AK |
5455 | case BGP_EVPN_AD_ROUTE: |
5456 | /* RD, ESI, EthTag, 1 VNI */ | |
5457 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
5458 | stream_putc(s, len); | |
5459 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
5460 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
5461 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
5462 | stream_put(s, label, BGP_LABEL_BYTES); | |
5463 | break; | |
5464 | ||
d62a17ae | 5465 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5466 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5467 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5468 | break; |
5469 | ||
5470 | default: | |
5471 | break; | |
5472 | } | |
5473 | } | |
5474 | ||
5475 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5476 | struct bgp_nlri *packet, int withdraw) | |
5477 | { | |
d7c0a89a QY |
5478 | uint8_t *pnt; |
5479 | uint8_t *lim; | |
d62a17ae | 5480 | afi_t afi; |
5481 | safi_t safi; | |
d7c0a89a | 5482 | uint32_t addpath_id; |
be92fc9f | 5483 | bool addpath_capable; |
d62a17ae | 5484 | int psize = 0; |
d7c0a89a | 5485 | uint8_t rtype; |
d62a17ae | 5486 | struct prefix p; |
5487 | ||
d62a17ae | 5488 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5489 | pnt = packet->nlri; | |
5490 | lim = pnt + packet->length; | |
5491 | afi = packet->afi; | |
5492 | safi = packet->safi; | |
5493 | addpath_id = 0; | |
5494 | ||
be92fc9f | 5495 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 5496 | |
5497 | for (; pnt < lim; pnt += psize) { | |
5498 | /* Clear prefix structure. */ | |
6006b807 | 5499 | memset(&p, 0, sizeof(p)); |
d62a17ae | 5500 | |
5501 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 5502 | if (addpath_capable) { |
d62a17ae | 5503 | /* When packet overflow occurs return immediately. */ |
5504 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5505 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5506 | |
a3a850a1 S |
5507 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5508 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5509 | pnt += BGP_ADDPATH_ID_LEN; |
5510 | } | |
5511 | ||
5512 | /* All EVPN NLRI types start with type and length. */ | |
5513 | if (pnt + 2 > lim) | |
513386b5 | 5514 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5515 | |
5516 | rtype = *pnt++; | |
3f54c705 | 5517 | psize = *pnt++; |
d62a17ae | 5518 | |
5519 | /* When packet overflow occur return immediately. */ | |
5520 | if (pnt + psize > lim) | |
513386b5 | 5521 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5522 | |
5523 | switch (rtype) { | |
5524 | case BGP_EVPN_MAC_IP_ROUTE: | |
5525 | if (process_type2_route(peer, afi, safi, | |
5526 | withdraw ? NULL : attr, pnt, | |
5527 | psize, addpath_id)) { | |
af4c2728 | 5528 | flog_err( |
e50f7cfd | 5529 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5530 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5531 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5532 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5533 | } |
5534 | break; | |
5535 | ||
5536 | case BGP_EVPN_IMET_ROUTE: | |
5537 | if (process_type3_route(peer, afi, safi, | |
5538 | withdraw ? NULL : attr, pnt, | |
5539 | psize, addpath_id)) { | |
af4c2728 | 5540 | flog_err( |
e50f7cfd | 5541 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5542 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5543 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5544 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5545 | } |
5546 | break; | |
5547 | ||
50f74cf1 | 5548 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5549 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5550 | withdraw ? NULL : attr, pnt, |
5551 | psize, addpath_id)) { | |
af4c2728 | 5552 | flog_err( |
e50f7cfd | 5553 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5554 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5555 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5556 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5557 | } |
5558 | break; | |
5559 | ||
c44ab6f1 AK |
5560 | case BGP_EVPN_AD_ROUTE: |
5561 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5562 | withdraw ? NULL : attr, pnt, | |
5563 | psize, addpath_id)) { | |
5564 | flog_err( | |
5565 | EC_BGP_PKT_PROCESS, | |
5566 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5567 | peer->bgp->vrf_id, peer->host, psize); | |
5568 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5569 | } | |
5570 | break; | |
5571 | ||
d62a17ae | 5572 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5573 | if (process_type5_route(peer, afi, safi, |
5574 | withdraw ? NULL : attr, pnt, | |
5575 | psize, addpath_id)) { | |
af4c2728 | 5576 | flog_err( |
e50f7cfd | 5577 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5578 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5579 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5580 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5581 | } |
5582 | break; | |
5583 | ||
5584 | default: | |
5585 | break; | |
5586 | } | |
5587 | } | |
5588 | ||
5589 | /* Packet length consistency check. */ | |
5590 | if (pnt != lim) | |
513386b5 | 5591 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5592 | |
513386b5 | 5593 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5594 | } |
5595 | ||
10ebe1ab MK |
5596 | /* |
5597 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5598 | * The mapping will be used during route processing. | |
10ebe1ab MK |
5599 | * bgp_vrf: specific bgp vrf instance on which RT is configured |
5600 | */ | |
5601 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5602 | { | |
f6e07e1b | 5603 | uint32_t i = 0; |
10ebe1ab MK |
5604 | struct ecommunity_val *eval = NULL; |
5605 | struct listnode *node = NULL, *nnode = NULL; | |
5606 | struct ecommunity *ecom = NULL; | |
5607 | ||
5608 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5609 | for (i = 0; i < ecom->size; i++) { | |
5610 | eval = (struct ecommunity_val *)(ecom->val | |
5611 | + (i | |
5612 | * ECOMMUNITY_SIZE)); | |
5613 | map_vrf_to_rt(bgp_vrf, eval); | |
5614 | } | |
5615 | } | |
5616 | } | |
5617 | ||
5618 | /* | |
5619 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5620 | */ | |
5621 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5622 | { | |
f6e07e1b | 5623 | uint32_t i; |
10ebe1ab MK |
5624 | struct ecommunity_val *eval; |
5625 | struct listnode *node, *nnode; | |
5626 | struct ecommunity *ecom; | |
5627 | ||
5628 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5629 | for (i = 0; i < ecom->size; i++) { | |
5630 | struct vrf_irt_node *irt; | |
5631 | struct ecommunity_val eval_tmp; | |
5632 | ||
5633 | eval = (struct ecommunity_val *)(ecom->val | |
5634 | + (i | |
5635 | * ECOMMUNITY_SIZE)); | |
5636 | /* If using "automatic" RT, we only care about the | |
5637 | * local-admin sub-field. | |
5638 | * This is to facilitate using VNI as the RT for EBGP | |
5639 | * peering too. | |
5640 | */ | |
5641 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5642 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5643 | BGP_VRF_IMPORT_RT_CFGD)) | |
5644 | mask_ecom_global_admin(&eval_tmp, eval); | |
5645 | ||
5646 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5647 | if (irt) | |
5648 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5649 | } | |
5650 | } | |
5651 | } | |
5652 | ||
5653 | ||
128ea8ab | 5654 | /* |
5655 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5656 | * The mapping will be used during route processing. | |
5657 | */ | |
d62a17ae | 5658 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5659 | { |
f6e07e1b | 5660 | uint32_t i; |
d62a17ae | 5661 | struct ecommunity_val *eval; |
5662 | struct listnode *node, *nnode; | |
5663 | struct ecommunity *ecom; | |
128ea8ab | 5664 | |
d62a17ae | 5665 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5666 | for (i = 0; i < ecom->size; i++) { | |
5667 | eval = (struct ecommunity_val *)(ecom->val | |
5668 | + (i | |
5669 | * ECOMMUNITY_SIZE)); | |
5670 | map_vni_to_rt(bgp, vpn, eval); | |
5671 | } | |
5672 | } | |
128ea8ab | 5673 | } |
5674 | ||
5675 | /* | |
5676 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5677 | */ | |
d62a17ae | 5678 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5679 | { |
f6e07e1b | 5680 | uint32_t i; |
d62a17ae | 5681 | struct ecommunity_val *eval; |
5682 | struct listnode *node, *nnode; | |
5683 | struct ecommunity *ecom; | |
128ea8ab | 5684 | |
d62a17ae | 5685 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5686 | for (i = 0; i < ecom->size; i++) { | |
5687 | struct irt_node *irt; | |
5688 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5689 | |
d62a17ae | 5690 | eval = (struct ecommunity_val *)(ecom->val |
5691 | + (i | |
5692 | * ECOMMUNITY_SIZE)); | |
5693 | /* If using "automatic" RT, we only care about the | |
5694 | * local-admin sub-field. | |
5695 | * This is to facilitate using VNI as the RT for EBGP | |
5696 | * peering too. | |
5697 | */ | |
5698 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5699 | if (!is_import_rt_configured(vpn)) | |
5700 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5701 | |
d62a17ae | 5702 | irt = lookup_import_rt(bgp, &eval_tmp); |
5703 | if (irt) | |
5704 | unmap_vni_from_rt(bgp, vpn, irt); | |
5705 | } | |
5706 | } | |
128ea8ab | 5707 | } |
5708 | ||
5709 | /* | |
5710 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5711 | * The mapping will be used during route processing. | |
5712 | */ | |
d62a17ae | 5713 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5714 | { |
c581d8b0 | 5715 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5716 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5717 | |
d62a17ae | 5718 | /* Map RT to VNI */ |
5719 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5720 | } |
5721 | ||
5722 | /* | |
5723 | * Derive Export RT automatically for VNI. | |
5724 | */ | |
d62a17ae | 5725 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5726 | { |
c581d8b0 | 5727 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5728 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5729 | } |
5730 | ||
676f83b9 | 5731 | /* |
5732 | * Derive RD automatically for VNI using passed information - it | |
5733 | * is of the form RouterId:unique-id-for-vni. | |
5734 | */ | |
5735 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5736 | { | |
9e97ff03 CS |
5737 | if (is_vrf_rd_configured(bgp)) |
5738 | return; | |
5739 | ||
92708db6 | 5740 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5741 | } |
5742 | ||
128ea8ab | 5743 | /* |
5744 | * Derive RD automatically for VNI using passed information - it | |
5745 | * is of the form RouterId:unique-id-for-vni. | |
5746 | */ | |
d62a17ae | 5747 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5748 | { |
c44ab6f1 | 5749 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5750 | |
d62a17ae | 5751 | vpn->prd.family = AF_UNSPEC; |
5752 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5753 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5754 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5755 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5756 | } |
5757 | ||
7df407ed CS |
5758 | /* |
5759 | * Lookup L3-VNI | |
5760 | */ | |
5761 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5762 | { | |
5763 | struct list *inst = bm->bgp; | |
5764 | struct listnode *node; | |
5765 | struct bgp *bgp_vrf; | |
5766 | ||
5767 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5768 | if (bgp_vrf->l3vni == vni) | |
5769 | return true; | |
5770 | } | |
5771 | ||
5772 | return false; | |
5773 | } | |
5774 | ||
128ea8ab | 5775 | /* |
5776 | * Lookup VNI. | |
5777 | */ | |
d62a17ae | 5778 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5779 | { |
d62a17ae | 5780 | struct bgpevpn *vpn; |
5781 | struct bgpevpn tmp; | |
128ea8ab | 5782 | |
6006b807 | 5783 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 5784 | tmp.vni = vni; |
5785 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5786 | return vpn; | |
128ea8ab | 5787 | } |
5788 | ||
5789 | /* | |
5790 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5791 | */ | |
d62a17ae | 5792 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5793 | struct in_addr originator_ip, |
5794 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5795 | struct in_addr mcast_grp, |
5796 | ifindex_t svi_ifindex) | |
128ea8ab | 5797 | { |
d62a17ae | 5798 | struct bgpevpn *vpn; |
128ea8ab | 5799 | |
d62a17ae | 5800 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5801 | |
d62a17ae | 5802 | /* Set values - RD and RT set to defaults. */ |
5803 | vpn->vni = vni; | |
5804 | vpn->originator_ip = originator_ip; | |
29c53922 | 5805 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5806 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5807 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5808 | |
d62a17ae | 5809 | /* Initialize route-target import and export lists */ |
5810 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5811 | vpn->import_rtl->cmp = |
5812 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5813 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5814 | vpn->export_rtl = list_new(); |
f4a5218d AK |
5815 | vpn->export_rtl->cmp = |
5816 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5817 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 5818 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5819 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5820 | |
852d9f97 SW |
5821 | /* Initialize EVPN route tables. */ |
5822 | vpn->ip_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5823 | vpn->mac_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
128ea8ab | 5824 | |
d62a17ae | 5825 | /* Add to hash */ |
ac390ef8 | 5826 | (void)hash_get(bgp->vnihash, vpn, hash_alloc_intern); |
6a8657d0 | 5827 | |
021b6596 AD |
5828 | bgp_evpn_remote_ip_hash_init(vpn); |
5829 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5830 | ||
6a8657d0 MK |
5831 | /* add to l2vni list on corresponding vrf */ |
5832 | bgpevpn_link_to_l3vni(vpn); | |
5833 | ||
c44ab6f1 AK |
5834 | bgp_evpn_vni_es_init(vpn); |
5835 | ||
d62a17ae | 5836 | QOBJ_REG(vpn, bgpevpn); |
5837 | return vpn; | |
128ea8ab | 5838 | } |
5839 | ||
5840 | /* | |
5841 | * Free a given VPN - called in multiple scenarios such as zebra | |
5842 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5843 | * This just frees appropriate memory, caller should have taken other | |
5844 | * needed actions. | |
5845 | */ | |
d62a17ae | 5846 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5847 | { |
021b6596 | 5848 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 5849 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5850 | bgpevpn_unlink_from_l3vni(vpn); |
852d9f97 SW |
5851 | bgp_table_unlock(vpn->ip_table); |
5852 | bgp_table_unlock(vpn->mac_table); | |
d62a17ae | 5853 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); |
6a154c88 DL |
5854 | list_delete(&vpn->import_rtl); |
5855 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5856 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 5857 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 5858 | hash_release(bgp->vnihash, vpn); |
5859 | QOBJ_UNREG(vpn); | |
5860 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5861 | } |
5862 | ||
3727e359 DA |
5863 | static void hash_evpn_free(struct bgpevpn *vpn) |
5864 | { | |
5865 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5866 | } | |
5867 | ||
50f74cf1 | 5868 | /* |
5869 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5870 | */ |
d62a17ae | 5871 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5872 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5873 | { |
40381db7 | 5874 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5875 | } |
5876 | ||
5877 | /* | |
50f74cf1 | 5878 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5879 | */ |
d62a17ae | 5880 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5881 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5882 | { |
40381db7 | 5883 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5884 | } |
5885 | ||
db0e1937 MK |
5886 | /* filter routes which have martian next hops */ |
5887 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5888 | { | |
0291c246 MK |
5889 | afi_t afi; |
5890 | safi_t safi; | |
9bcb3eef | 5891 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5892 | struct bgp_table *table; |
40381db7 | 5893 | struct bgp_path_info *pi; |
db0e1937 MK |
5894 | |
5895 | afi = AFI_L2VPN; | |
5896 | safi = SAFI_EVPN; | |
5897 | ||
5898 | /* Walk entire global routing table and evaluate routes which could be | |
5899 | * imported into this VPN. Note that we cannot just look at the routes | |
5900 | * for the VNI's RD - | |
5901 | * remote routes applicable for this VNI could have any RD. | |
5902 | */ | |
5903 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5904 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5905 | rd_dest = bgp_route_next(rd_dest)) { | |
5906 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5907 | if (!table) |
5908 | continue; | |
5909 | ||
9bcb3eef DS |
5910 | for (dest = bgp_table_top(table); dest; |
5911 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5912 | |
9bcb3eef | 5913 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5914 | pi = pi->next) { |
db0e1937 MK |
5915 | |
5916 | /* Consider "valid" remote routes applicable for | |
5917 | * this VNI. */ | |
40381db7 DS |
5918 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5919 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5920 | continue; |
9bcb3eef DS |
5921 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5922 | pi->sub_type, pi->attr, | |
5923 | dest)) { | |
b54892e0 | 5924 | const struct prefix *p = |
9bcb3eef | 5925 | bgp_dest_get_prefix(dest); |
db0e1937 | 5926 | |
b54892e0 DS |
5927 | if (bgp_debug_update(pi->peer, p, NULL, |
5928 | 1)) { | |
5929 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5930 | |
b54892e0 | 5931 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5932 | attr_str, |
5933 | sizeof(attr_str)); | |
db0e1937 | 5934 | |
db0e1937 | 5935 | zlog_debug( |
56ca3b5b | 5936 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5937 | bgp->vrf_id, dest, |
db0e1937 | 5938 | attr_str); |
b54892e0 | 5939 | } |
db0e1937 | 5940 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5941 | p, pi); |
db0e1937 | 5942 | |
9bcb3eef | 5943 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5944 | safi); |
db0e1937 | 5945 | } |
db0e1937 MK |
5946 | } |
5947 | } | |
5948 | } | |
5949 | ||
5950 | return 0; | |
5951 | } | |
5952 | ||
128ea8ab | 5953 | /* |
5954 | * Handle del of a local MACIP. | |
5955 | */ | |
d62a17ae | 5956 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5957 | struct ipaddr *ip, int state) |
128ea8ab | 5958 | { |
d62a17ae | 5959 | struct bgpevpn *vpn; |
5960 | struct prefix_evpn p; | |
9bcb3eef | 5961 | struct bgp_dest *dest; |
128ea8ab | 5962 | |
d62a17ae | 5963 | /* Lookup VNI hash - should exist. */ |
5964 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5965 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5966 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5967 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5968 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5969 | return -1; | |
5970 | } | |
128ea8ab | 5971 | |
d62a17ae | 5972 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5973 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5974 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5975 | delete_evpn_route(bgp, vpn, &p); | |
5976 | } else { | |
5977 | /* Re-instate the current remote best path if any */ | |
852d9f97 | 5978 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
e71ad4b6 | 5979 | if (dest) { |
9bcb3eef | 5980 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
5981 | bgp_dest_unlock_node(dest); |
5982 | } | |
ec0ab544 | 5983 | } |
128ea8ab | 5984 | |
d62a17ae | 5985 | return 0; |
128ea8ab | 5986 | } |
5987 | ||
5988 | /* | |
5989 | * Handle add of a local MACIP. | |
5990 | */ | |
d62a17ae | 5991 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5992 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5993 | { |
d62a17ae | 5994 | struct bgpevpn *vpn; |
5995 | struct prefix_evpn p; | |
128ea8ab | 5996 | |
d62a17ae | 5997 | /* Lookup VNI hash - should exist. */ |
5998 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5999 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6000 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6001 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 6002 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6003 | return -1; | |
6004 | } | |
128ea8ab | 6005 | |
d62a17ae | 6006 | /* Create EVPN type-2 route and schedule for processing. */ |
6007 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 6008 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 6009 | flog_err( |
e50f7cfd | 6010 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 6011 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 6012 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
6013 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
6014 | ? "sticky gateway" | |
6015 | : "", | |
c0d72166 | 6016 | mac, ip, flags); |
d62a17ae | 6017 | return -1; |
6018 | } | |
128ea8ab | 6019 | |
d62a17ae | 6020 | return 0; |
128ea8ab | 6021 | } |
6022 | ||
e3b78da8 | 6023 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
6024 | struct bgp *bgp_vrf) |
6025 | { | |
e3b78da8 | 6026 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 6027 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 6028 | |
5e53dce3 T |
6029 | bgp_evpn = bgp_get_evpn(); |
6030 | assert(bgp_evpn); | |
6a8657d0 | 6031 | |
6a8657d0 MK |
6032 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
6033 | bgpevpn_link_to_l3vni(vpn); | |
6034 | } | |
6035 | ||
14e814ea CS |
6036 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
6037 | struct ethaddr *svi_rmac, | |
6038 | struct ethaddr *vrr_rmac, | |
0483af6e | 6039 | struct in_addr originator_ip, int filter, |
14e814ea CS |
6040 | ifindex_t svi_ifindex, |
6041 | bool is_anycast_mac) | |
fe1dc5a3 MK |
6042 | { |
6043 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 6044 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
6045 | struct listnode *node = NULL; |
6046 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
6047 | as_t as = 0; |
6048 | ||
3621ebc5 | 6049 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 6050 | * auto-creatio |
6051 | */ | |
5e53dce3 T |
6052 | bgp_evpn = bgp_get_evpn(); |
6053 | if (!bgp_evpn) { | |
af4c2728 | 6054 | flog_err( |
e50f7cfd | 6055 | EC_BGP_NO_DFLT, |
3621ebc5 | 6056 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 6057 | l3vni); |
fe1dc5a3 MK |
6058 | return -1; |
6059 | } | |
5e53dce3 | 6060 | as = bgp_evpn->as; |
fe1dc5a3 | 6061 | |
0437e105 | 6062 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 6063 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
6064 | if (!bgp_vrf) { |
6065 | ||
6066 | int ret = 0; | |
6067 | ||
5d5393b9 DL |
6068 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
6069 | vrf_id == VRF_DEFAULT | |
6070 | ? BGP_INSTANCE_TYPE_DEFAULT | |
6071 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 6072 | switch (ret) { |
fe1dc5a3 | 6073 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 6074 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
6075 | "BGP instance is already running; AS is %u", |
6076 | as); | |
fe1dc5a3 MK |
6077 | return -1; |
6078 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 6079 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 6080 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
6081 | return -1; |
6082 | } | |
6083 | ||
6084 | /* mark as auto created */ | |
6085 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
6086 | } | |
6087 | ||
0483af6e | 6088 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 6089 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 6090 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 6091 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 6092 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 6093 | |
14e814ea CS |
6094 | /* copy anycast MAC from VRR MAC */ |
6095 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
6096 | /* copy sys RMAC from SVI MAC */ | |
6097 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
6098 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
6099 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
6100 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
6101 | ||
c0d72166 DS |
6102 | if (bgp_debug_zebra(NULL)) |
6103 | zlog_debug( | |
6104 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
6105 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
6106 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
6107 | : "disable", | |
6108 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
6109 | &bgp_vrf->evpn_info->pip_rmac_static, | |
6110 | is_anycast_mac ? "Enable" : "Disable"); | |
6111 | ||
c48d9f5f | 6112 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 6113 | if (filter) { |
c48d9f5f MK |
6114 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6115 | ||
10f70510 AD |
6116 | /* |
6117 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
6118 | * set before linking vrf to L3VNI. Thus, no need to clear | |
6119 | * that explicitly. | |
6120 | */ | |
6121 | } else { | |
6122 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
6123 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
6124 | ||
6125 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6126 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
6127 | ||
6128 | /* | |
6129 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
6130 | * flag, update all MACIP routes in this VNI | |
6131 | */ | |
6132 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
6133 | update_all_type2_routes(bgp_evpn, vpn); | |
6134 | } | |
6135 | } | |
6136 | } | |
6137 | ||
530e8a6e | 6138 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
6139 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
6140 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
6141 | else |
6142 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
6143 | ||
c581d8b0 MK |
6144 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
6145 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
6146 | |
6147 | /* auto derive RD */ | |
676f83b9 | 6148 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 6149 | |
6a8657d0 | 6150 | /* link all corresponding l2vnis */ |
5e53dce3 | 6151 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 6152 | (void (*)(struct hash_bucket *, |
996c9314 | 6153 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
6154 | bgp_vrf); |
6155 | ||
c48d9f5f MK |
6156 | /* Only update all corresponding type-2 routes if we are advertising two |
6157 | * labels along with type-2 routes | |
6158 | */ | |
6159 | if (!filter) | |
6160 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 6161 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 6162 | |
06d2e8f3 MK |
6163 | /* advertise type-5 routes if needed */ |
6164 | update_advertise_vrf_routes(bgp_vrf); | |
6165 | ||
5ba238b7 MK |
6166 | /* install all remote routes belonging to this l3vni into correspondng |
6167 | * vrf */ | |
6168 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
6169 | |
6170 | return 0; | |
6171 | } | |
6172 | ||
996c9314 | 6173 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
6174 | { |
6175 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 6176 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 6177 | struct listnode *node = NULL; |
18abc1eb | 6178 | struct listnode *next = NULL; |
f1f8b53c | 6179 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
6180 | |
6181 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
6182 | if (!bgp_vrf) { | |
af4c2728 | 6183 | flog_err( |
e50f7cfd | 6184 | EC_BGP_NO_DFLT, |
996c9314 LB |
6185 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
6186 | l3vni); | |
fe1dc5a3 MK |
6187 | return -1; |
6188 | } | |
6189 | ||
5e53dce3 T |
6190 | bgp_evpn = bgp_get_evpn(); |
6191 | if (!bgp_evpn) { | |
af4c2728 | 6192 | flog_err( |
e50f7cfd | 6193 | EC_BGP_NO_DFLT, |
3621ebc5 | 6194 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 6195 | l3vni); |
f1f8b53c MK |
6196 | return -1; |
6197 | } | |
6198 | ||
d846168d | 6199 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 6200 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
6201 | * routes. This will uninstalling the routes from zebra and decremnt the |
6202 | * bgp info count. | |
523cafc4 | 6203 | */ |
d846168d | 6204 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 6205 | |
06d2e8f3 MK |
6206 | /* delete/withdraw all type-5 routes */ |
6207 | delete_withdraw_vrf_routes(bgp_vrf); | |
6208 | ||
fe1dc5a3 MK |
6209 | /* remove the l3vni from vrf instance */ |
6210 | bgp_vrf->l3vni = 0; | |
6211 | ||
6212 | /* remove the Rmac from the BGP vrf */ | |
6213 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
6214 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
6215 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
6216 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
6217 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 6218 | |
530e8a6e | 6219 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 6220 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 6221 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
6222 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
6223 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 6224 | } |
530e8a6e CS |
6225 | |
6226 | /* remove default export RT */ | |
6227 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
6228 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 6229 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 6230 | } |
fe1dc5a3 | 6231 | |
f1f8b53c | 6232 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
6233 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
6234 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6235 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 6236 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
6237 | } |
6238 | } | |
fe1dc5a3 | 6239 | |
18abc1eb | 6240 | /* If any L2VNIs point to this instance, unlink them. */ |
6241 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
6242 | bgpevpn_unlink_from_l3vni(vpn); | |
6243 | ||
ff9d54fb CS |
6244 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6245 | ||
fe1dc5a3 MK |
6246 | /* Delete the instance if it was autocreated */ |
6247 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
6248 | bgp_delete(bgp_vrf); | |
6249 | ||
6250 | return 0; | |
6251 | } | |
6252 | ||
128ea8ab | 6253 | /* |
6254 | * Handle del of a local VNI. | |
6255 | */ | |
d62a17ae | 6256 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 6257 | { |
d62a17ae | 6258 | struct bgpevpn *vpn; |
128ea8ab | 6259 | |
d62a17ae | 6260 | /* Locate VNI hash */ |
6261 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6262 | if (!vpn) { | |
1e00627b | 6263 | if (bgp_debug_zebra(NULL)) |
ade6974d | 6264 | flog_warn( |
e50f7cfd | 6265 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
6266 | "%u: VNI hash entry for VNI %u not found at DEL", |
6267 | bgp->vrf_id, vni); | |
d62a17ae | 6268 | return 0; |
6269 | } | |
128ea8ab | 6270 | |
d62a17ae | 6271 | /* Remove all local EVPN routes and schedule for processing (to |
6272 | * withdraw from peers). | |
6273 | */ | |
6274 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 6275 | |
021b6596 AD |
6276 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
6277 | ||
9daa5d47 | 6278 | vpn->svi_ifindex = 0; |
db0e1937 MK |
6279 | /* |
6280 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
6281 | */ | |
6282 | bgp_tip_del(bgp, &vpn->originator_ip); | |
6283 | ||
d62a17ae | 6284 | /* Clear "live" flag and see if hash needs to be freed. */ |
6285 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6286 | if (!is_vni_configured(vpn)) | |
6287 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 6288 | |
d62a17ae | 6289 | return 0; |
128ea8ab | 6290 | } |
6291 | ||
6292 | /* | |
d1911c26 | 6293 | * Handle add (or update) of a local VNI. The VNI changes we care |
6294 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 6295 | */ |
d62a17ae | 6296 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
6297 | struct in_addr originator_ip, |
6298 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
6299 | struct in_addr mcast_grp, |
6300 | ifindex_t svi_ifindex) | |
d62a17ae | 6301 | { |
6302 | struct bgpevpn *vpn; | |
6303 | struct prefix_evpn p; | |
6304 | ||
d62a17ae | 6305 | /* Lookup VNI. If present and no change, exit. */ |
6306 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 6307 | if (vpn) { |
29c53922 | 6308 | |
d1911c26 | 6309 | if (is_vni_live(vpn) |
6310 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 6311 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
6312 | && vpn->tenant_vrf_id == tenant_vrf_id |
6313 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 6314 | /* Probably some other param has changed that we don't |
6315 | * care about. */ | |
6316 | return 0; | |
6317 | ||
76d07c7a AK |
6318 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
6319 | ||
021b6596 AD |
6320 | if (vpn->svi_ifindex != svi_ifindex) { |
6321 | ||
6322 | /* | |
6323 | * Unresolve all the gateway IP nexthops for this VNI | |
6324 | * for old SVI | |
6325 | */ | |
dc6cef73 AD |
6326 | bgp_evpn_remote_ip_hash_iterate( |
6327 | vpn, | |
6328 | (void (*)(struct hash_bucket *, void *)) | |
6329 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
6330 | vpn); |
6331 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
6332 | vpn->svi_ifindex = svi_ifindex; | |
6333 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6334 | ||
6335 | /* | |
6336 | * Resolve all the gateway IP nexthops for this VNI | |
6337 | * for new SVI | |
6338 | */ | |
dc6cef73 AD |
6339 | bgp_evpn_remote_ip_hash_iterate( |
6340 | vpn, | |
6341 | (void (*)(struct hash_bucket *, void *)) | |
6342 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
6343 | vpn); |
6344 | } | |
9daa5d47 | 6345 | |
d1911c26 | 6346 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 6347 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
6348 | |
6349 | /* | |
6350 | * Unresolve all the gateway IP nexthops for this VNI | |
6351 | * in old tenant vrf | |
6352 | */ | |
dc6cef73 AD |
6353 | bgp_evpn_remote_ip_hash_iterate( |
6354 | vpn, | |
6355 | (void (*)(struct hash_bucket *, void *)) | |
6356 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 6357 | vpn); |
6a8657d0 | 6358 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 6359 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 6360 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
6361 | |
6362 | /* | |
6363 | * Resolve all the gateway IP nexthops for this VNI | |
6364 | * in new tenant vrf | |
6365 | */ | |
dc6cef73 AD |
6366 | bgp_evpn_remote_ip_hash_iterate( |
6367 | vpn, | |
6368 | (void (*)(struct hash_bucket *, void *)) | |
6369 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 6370 | vpn); |
6a8657d0 | 6371 | } |
29c53922 | 6372 | |
d1911c26 | 6373 | /* If tunnel endpoint IP has changed, update (and delete prior |
6374 | * type-3 route, if needed.) | |
6375 | */ | |
6376 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
6377 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 6378 | |
d1911c26 | 6379 | /* Update all routes with new endpoint IP and/or export RT |
6380 | * for VRFs | |
6381 | */ | |
6382 | if (is_vni_live(vpn)) | |
6383 | update_routes_for_vni(bgp, vpn); | |
879e43a5 | 6384 | } else { |
6385 | /* Create or update as appropriate. */ | |
76d07c7a | 6386 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
879e43a5 | 6387 | mcast_grp, svi_ifindex); |
d62a17ae | 6388 | } |
6389 | ||
db0e1937 | 6390 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6391 | if (is_vni_live(vpn)) |
6392 | return 0; | |
6393 | ||
d62a17ae | 6394 | /* Mark as "live" */ |
6395 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6396 | ||
db0e1937 MK |
6397 | /* tunnel is now active, add tunnel-ip to db */ |
6398 | bgp_tip_add(bgp, &originator_ip); | |
6399 | ||
6400 | /* filter routes as nexthop database has changed */ | |
6401 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
6402 | ||
fd069644 DS |
6403 | /* |
6404 | * Create EVPN type-3 route and schedule for processing. | |
6405 | * | |
6406 | * RT-3 only if doing head-end replication | |
6407 | */ | |
833b8a50 AK |
6408 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6409 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 6410 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 6411 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
6412 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
6413 | "%u: Type3 route creation failure for VNI %u", | |
6414 | bgp->vrf_id, vni); | |
6415 | return -1; | |
6416 | } | |
d62a17ae | 6417 | } |
6418 | ||
6419 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6420 | * VNI, | |
6421 | * install them. | |
6422 | */ | |
6423 | install_routes_for_vni(bgp, vpn); | |
6424 | ||
d7d97010 MK |
6425 | /* If we are advertising gateway mac-ip |
6426 | It needs to be conveyed again to zebra */ | |
6427 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6428 | ||
df070e6f CS |
6429 | /* advertise svi mac-ip knob to zebra */ |
6430 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6431 | ||
d62a17ae | 6432 | return 0; |
b18825eb | 6433 | } |
14c1a7bf | 6434 | |
fd069644 DS |
6435 | /* |
6436 | * Handle change in setting for BUM handling. The supported values | |
6437 | * are head-end replication and dropping all BUM packets. Any change | |
6438 | * should be registered with zebra. Also, if doing head-end replication, | |
6439 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6440 | * to be dropped, the RT-3s must be withdrawn. | |
6441 | */ | |
6442 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6443 | { | |
6444 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6445 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6446 | "Flooding" : "Flooding Disabled"); | |
6447 | ||
6448 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6449 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6450 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6451 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6452 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6453 | } | |
6454 | ||
7724c0a1 | 6455 | /* |
6456 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6457 | * EVPN routes from peers. | |
6458 | */ | |
d62a17ae | 6459 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6460 | { |
e3b78da8 | 6461 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6462 | void *))cleanup_vni_on_disable, |
6463 | bgp); | |
7724c0a1 | 6464 | } |
6465 | ||
14c1a7bf | 6466 | /* |
6467 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6468 | * BGP instance (default) is being freed. | |
6469 | */ | |
d62a17ae | 6470 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6471 | { |
1525e99f | 6472 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6473 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6474 | bgp); |
6475 | ||
3727e359 | 6476 | hash_clean(bgp->import_rt_hash, (void (*)(void *))hash_import_rt_free); |
1525e99f | 6477 | hash_free(bgp->import_rt_hash); |
d62a17ae | 6478 | bgp->import_rt_hash = NULL; |
1525e99f | 6479 | |
3727e359 DA |
6480 | hash_clean(bgp->vrf_import_rt_hash, |
6481 | (void (*)(void *))hash_vrf_import_rt_free); | |
1525e99f | 6482 | hash_free(bgp->vrf_import_rt_hash); |
10ebe1ab | 6483 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 6484 | |
3727e359 | 6485 | hash_clean(bgp->vni_svi_hash, (void (*)(void *))hash_evpn_free); |
021b6596 AD |
6486 | hash_free(bgp->vni_svi_hash); |
6487 | bgp->vni_svi_hash = NULL; | |
1525e99f | 6488 | hash_free(bgp->vnihash); |
d62a17ae | 6489 | bgp->vnihash = NULL; |
1525e99f | 6490 | |
6a154c88 DL |
6491 | list_delete(&bgp->vrf_import_rtl); |
6492 | list_delete(&bgp->vrf_export_rtl); | |
6493 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6494 | } |
6495 | ||
6496 | /* | |
6497 | * Initialization for EVPN | |
6498 | * Create | |
6499 | * VNI hash table | |
6500 | * hash for RT to VNI | |
14c1a7bf | 6501 | */ |
d62a17ae | 6502 | void bgp_evpn_init(struct bgp *bgp) |
6503 | { | |
6504 | bgp->vnihash = | |
6505 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
6506 | bgp->vni_svi_hash = |
6507 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
6508 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 6509 | bgp->import_rt_hash = |
6510 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6511 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6512 | bgp->vrf_import_rt_hash = |
6513 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6514 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6515 | bgp->vrf_import_rtl = list_new(); |
6516 | bgp->vrf_import_rtl->cmp = | |
f4a5218d AK |
6517 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6518 | bgp->vrf_import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
c581d8b0 MK |
6519 | bgp->vrf_export_rtl = list_new(); |
6520 | bgp->vrf_export_rtl->cmp = | |
f4a5218d AK |
6521 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6522 | bgp->vrf_export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
6a8657d0 | 6523 | bgp->l2vnis = list_new(); |
64465785 | 6524 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6525 | /* By default Duplicate Address Dection is enabled. |
6526 | * Max-moves (N) 5, detection time (M) 180 | |
6527 | * default action is warning-only | |
6528 | * freeze action permanently freezes address, | |
6529 | * and freeze time (auto-recovery) is disabled. | |
6530 | */ | |
6531 | if (bgp->evpn_info) { | |
6532 | bgp->evpn_info->dup_addr_detect = true; | |
6533 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6534 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6535 | bgp->evpn_info->dad_freeze = false; | |
6536 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6537 | /* Initialize zebra vxlan */ |
6538 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6539 | /* Enable PIP feature by default for bgp vrf instance */ |
6540 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6541 | struct bgp *bgp_default; | |
6542 | ||
6543 | bgp->evpn_info->advertise_pip = true; | |
6544 | bgp_default = bgp_get_default(); | |
6545 | if (bgp_default) | |
6546 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6547 | } | |
85c8d83b | 6548 | } |
fd069644 DS |
6549 | |
6550 | /* Default BUM handling is to do head-end replication. */ | |
6551 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6552 | |
6553 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6554 | } |
10ebe1ab MK |
6555 | |
6556 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6557 | { | |
6558 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6559 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6560 | } |
44c69747 LK |
6561 | |
6562 | /* | |
6563 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6564 | */ | |
5f040085 | 6565 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6566 | { |
6567 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6568 | ||
6569 | if (!pfx || pfx->family != AF_EVPN) | |
6570 | return 0; | |
6571 | ||
6572 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6573 | return 0; | |
6574 | ||
6575 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6576 | } | |
7c312383 AD |
6577 | |
6578 | /* | |
6579 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6580 | */ | |
5a1ae2c2 | 6581 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6582 | { |
6583 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6584 | ||
6585 | /* | |
e11329ca | 6586 | * EVPN routes should be marked as valid only if the nexthop is |
6587 | * reachable. Only if this happens, the route should be imported | |
6588 | * (into VNI or VRF routing tables) and/or advertised. | |
fff7545a | 6589 | * Note: This is currently applied for EVPN type-1, type-2, |
6590 | * type-3, type-4 and type-5 routes. | |
6591 | * It may be tweaked later on for other routes, or | |
e11329ca | 6592 | * even removed completely when all routes are handled. |
7c312383 | 6593 | */ |
fa46a5cd AK |
6594 | if (pfx && pfx->family == AF_EVPN |
6595 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6596 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6597 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6598 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6599 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6600 | return true; |
6601 | ||
6602 | return false; | |
6603 | } | |
021b6596 AD |
6604 | |
6605 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6606 | { | |
6607 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6608 | struct evpn_remote_ip *ip; | |
6609 | ||
6610 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6611 | *ip = *key; | |
6612 | ip->macip_path_list = list_new(); | |
6613 | ||
6614 | return ip; | |
6615 | } | |
6616 | ||
6617 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6618 | { | |
6619 | const struct evpn_remote_ip *ip = p; | |
6620 | const struct ipaddr *addr = &ip->addr; | |
6621 | ||
6622 | if (IS_IPADDR_V4(addr)) | |
6623 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6624 | ||
6625 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6626 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6627 | } | |
6628 | ||
6629 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6630 | { | |
6631 | const struct evpn_remote_ip *ip1 = p1; | |
6632 | const struct evpn_remote_ip *ip2 = p2; | |
6633 | ||
761cc919 | 6634 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6635 | } |
6636 | ||
6637 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6638 | { | |
dc6cef73 AD |
6639 | if (!evpn_resolve_overlay_index()) |
6640 | return; | |
6641 | ||
021b6596 AD |
6642 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6643 | bgp_evpn_remote_ip_hash_cmp, | |
6644 | "BGP EVPN remote IP hash"); | |
6645 | } | |
6646 | ||
6647 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6648 | { | |
6649 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6650 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6651 | ||
6652 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6653 | ||
6654 | list_delete(&ip->macip_path_list); | |
6655 | ||
6656 | hash_release(vpn->remote_ip_hash, ip); | |
6657 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6658 | } | |
6659 | ||
6660 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6661 | { | |
dc6cef73 | 6662 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6663 | return; |
6664 | ||
6665 | hash_iterate(vpn->remote_ip_hash, | |
6666 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6667 | vpn); | |
6668 | ||
6669 | hash_free(vpn->remote_ip_hash); | |
6670 | vpn->remote_ip_hash = NULL; | |
6671 | } | |
6672 | ||
6673 | /* Add a remote MAC/IP route to hash table */ | |
6674 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6675 | struct bgp_path_info *pi) | |
6676 | { | |
6677 | struct evpn_remote_ip tmp; | |
6678 | struct evpn_remote_ip *ip; | |
6679 | struct prefix_evpn *evp; | |
6680 | ||
dc6cef73 AD |
6681 | if (!evpn_resolve_overlay_index()) |
6682 | return; | |
6683 | ||
6684 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6685 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6686 | return; | |
6687 | ||
021b6596 AD |
6688 | evp = (struct prefix_evpn *)&pi->net->p; |
6689 | ||
6690 | if (evp->family != AF_EVPN | |
6691 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6692 | || is_evpn_prefix_ipaddr_none(evp)) | |
6693 | return; | |
6694 | ||
6695 | tmp.addr = evp->prefix.macip_addr.ip; | |
6696 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6697 | if (ip) { | |
6698 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6699 | return; | |
6700 | (void)listnode_add(ip->macip_path_list, pi); | |
6701 | return; | |
6702 | } | |
6703 | ||
6704 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
021b6596 AD |
6705 | (void)listnode_add(ip->macip_path_list, pi); |
6706 | ||
6707 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6708 | } | |
6709 | ||
6710 | /* Delete a remote MAC/IP route from hash table */ | |
6711 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6712 | struct bgp_path_info *pi) | |
6713 | { | |
6714 | struct evpn_remote_ip tmp; | |
6715 | struct evpn_remote_ip *ip; | |
6716 | struct prefix_evpn *evp; | |
6717 | ||
dc6cef73 AD |
6718 | if (!evpn_resolve_overlay_index()) |
6719 | return; | |
6720 | ||
021b6596 AD |
6721 | evp = (struct prefix_evpn *)&pi->net->p; |
6722 | ||
6723 | if (evp->family != AF_EVPN | |
6724 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6725 | || is_evpn_prefix_ipaddr_none(evp)) | |
6726 | return; | |
6727 | ||
6728 | tmp.addr = evp->prefix.macip_addr.ip; | |
6729 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6730 | if (ip == NULL) | |
6731 | return; | |
6732 | ||
6733 | listnode_delete(ip->macip_path_list, pi); | |
6734 | ||
6735 | if (ip->macip_path_list->count == 0) { | |
6736 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6737 | hash_release(vpn->remote_ip_hash, ip); | |
6738 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6739 | } | |
6740 | } | |
6741 | ||
dc6cef73 AD |
6742 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6743 | void (*func)(struct hash_bucket *, | |
6744 | void *), | |
6745 | void *arg) | |
6746 | { | |
6747 | if (!evpn_resolve_overlay_index()) | |
6748 | return; | |
6749 | ||
6750 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6751 | } | |
6752 | ||
021b6596 AD |
6753 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6754 | { | |
6755 | char buf[INET6_ADDRSTRLEN]; | |
021b6596 AD |
6756 | struct listnode *node = NULL; |
6757 | struct bgp_path_info *pi = NULL; | |
6758 | struct vty *vty = (struct vty *)args; | |
6759 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6760 | ||
6761 | vty_out(vty, " Remote IP: %s\n", | |
6762 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6763 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
511211bf DA |
6764 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) |
6765 | vty_out(vty, " %pFX\n", &pi->net->p); | |
021b6596 AD |
6766 | } |
6767 | ||
6768 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6769 | { | |
6770 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6771 | struct vty *vty = (struct vty *)args; | |
6772 | ||
6773 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6774 | bgp_evpn_remote_ip_hash_iterate( |
6775 | vpn, | |
021b6596 AD |
6776 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6777 | vty); | |
6778 | vty_out(vty, "\n"); | |
6779 | } | |
6780 | ||
6781 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6782 | void *args) | |
6783 | { | |
6784 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6785 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6786 | ||
6787 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6788 | } | |
6789 | ||
6790 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6791 | void *args) | |
6792 | { | |
6793 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6794 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6795 | ||
6796 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6797 | } | |
6798 | ||
6799 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6800 | { | |
6801 | const struct bgpevpn *vpn = p; | |
6802 | ||
6803 | return jhash_1word(vpn->svi_ifindex, 0); | |
6804 | } | |
6805 | ||
6806 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6807 | { | |
6808 | const struct bgpevpn *vpn1 = p1; | |
6809 | const struct bgpevpn *vpn2 = p2; | |
6810 | ||
6811 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6812 | } | |
6813 | ||
6814 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
6815 | ifindex_t svi) | |
6816 | { | |
6817 | struct bgpevpn *vpn; | |
6818 | struct bgpevpn tmp; | |
6819 | ||
6006b807 | 6820 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
6821 | tmp.svi_ifindex = svi; |
6822 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
6823 | return vpn; | |
6824 | } | |
6825 | ||
6826 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
6827 | { | |
6828 | if (vpn->svi_ifindex == 0) | |
6829 | return; | |
6830 | ||
8e3aae66 | 6831 | (void)hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); |
021b6596 AD |
6832 | } |
6833 | ||
6834 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
6835 | struct bgpevpn *vpn) | |
6836 | { | |
6837 | if (vpn->svi_ifindex == 0) | |
6838 | return; | |
6839 | ||
6840 | hash_release(bgp->vni_svi_hash, vpn); | |
6841 | } | |
6842 | ||
6843 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
6844 | { | |
6845 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
6846 | struct vty *vty = (struct vty *)args; | |
6847 | ||
6848 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
6849 | } | |
6850 | ||
6851 | /* | |
6852 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
6853 | * gateway IP overlay index. | |
6854 | * This function returns true if there is a remote MAC/IP route for the gateway | |
6855 | * IP in the EVI of the nexthop SVI. | |
6856 | */ | |
6857 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
6858 | { | |
6859 | struct bgp *bgp_evpn = NULL; | |
6860 | struct bgpevpn *vpn = NULL; | |
6861 | struct evpn_remote_ip tmp; | |
6862 | struct prefix *p; | |
6863 | ||
dc6cef73 AD |
6864 | if (!evpn_resolve_overlay_index()) |
6865 | return false; | |
6866 | ||
021b6596 AD |
6867 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
6868 | return false; | |
6869 | ||
6870 | bgp_evpn = bgp_get_evpn(); | |
6871 | if (!bgp_evpn) | |
6872 | return false; | |
6873 | ||
6874 | /* | |
6875 | * Gateway IP is resolved by nht over SVI interface. | |
6876 | * Use this SVI to find corresponding EVI(L2 context) | |
6877 | */ | |
6878 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
6879 | if (!vpn) | |
6880 | return false; | |
6881 | ||
6882 | if (vpn->bgp_vrf != bnc->bgp) | |
6883 | return false; | |
6884 | ||
6885 | /* | |
6886 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
6887 | * which stores all the remote IP addresses received via MAC/IP routes | |
6888 | * in this EVI | |
6889 | */ | |
6006b807 | 6890 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
6891 | |
6892 | p = &bnc->prefix; | |
6893 | if (p->family == AF_INET) { | |
6894 | tmp.addr.ipa_type = IPADDR_V4; | |
6895 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
6896 | sizeof(struct in_addr)); | |
6897 | } else if (p->family == AF_INET6) { | |
6898 | tmp.addr.ipa_type = IPADDR_V6; | |
6899 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
6900 | sizeof(struct in6_addr)); | |
6901 | } else | |
6902 | return false; | |
6903 | ||
6904 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
6905 | return false; | |
6906 | ||
6907 | return true; | |
6908 | } | |
6909 | ||
6910 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
6911 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
6912 | struct ipaddr *addr, | |
6913 | bool resolve) | |
6914 | { | |
6915 | afi_t afi; | |
6916 | struct prefix p; | |
6917 | struct bgp_nexthop_cache *bnc; | |
6918 | struct bgp_nexthop_cache_head *tree = NULL; | |
6919 | ||
6920 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
6921 | return; | |
6922 | ||
6006b807 | 6923 | memset(&p, 0, sizeof(p)); |
021b6596 AD |
6924 | |
6925 | if (addr->ipa_type == IPADDR_V4) { | |
6926 | afi = AFI_IP; | |
6927 | p.family = AF_INET; | |
6928 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
6929 | sizeof(struct in_addr)); | |
6930 | p.prefixlen = IPV4_MAX_BITLEN; | |
6931 | } else if (addr->ipa_type == IPADDR_V6) { | |
6932 | afi = AFI_IP6; | |
6933 | p.family = AF_INET6; | |
6934 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
6935 | sizeof(struct in6_addr)); | |
6936 | p.prefixlen = IPV6_MAX_BITLEN; | |
6937 | } else | |
6938 | return; | |
6939 | ||
6940 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
35aae5c9 | 6941 | bnc = bnc_find(tree, &p, 0, 0); |
021b6596 AD |
6942 | |
6943 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
6944 | return; | |
6945 | ||
6946 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
6947 | return; | |
6948 | ||
511211bf DA |
6949 | if (BGP_DEBUG(nht, NHT)) |
6950 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %pFX", | |
021b6596 | 6951 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, |
511211bf DA |
6952 | vpn->vni, (resolve ? "add" : "delete"), |
6953 | &bnc->prefix); | |
021b6596 AD |
6954 | |
6955 | /* | |
6956 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
6957 | * Set nexthop as valid only if it is already L3 reachable | |
6958 | */ | |
6959 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
6960 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6961 | bnc->flags |= BGP_NEXTHOP_VALID; | |
6962 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6963 | evaluate_paths(bnc); | |
6964 | } | |
6965 | ||
6966 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
6967 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
6968 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
6969 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6970 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6971 | evaluate_paths(bnc); | |
6972 | } | |
6973 | } | |
6974 | ||
dc6cef73 AD |
6975 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
6976 | void *arg) | |
6977 | { | |
6978 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6979 | struct bgp_dest *dest; | |
6980 | struct bgp_path_info *pi; | |
6981 | ||
6982 | bgp_evpn_remote_ip_hash_init(vpn); | |
6983 | ||
852d9f97 | 6984 | for (dest = bgp_table_top(vpn->ip_table); dest; |
dc6cef73 AD |
6985 | dest = bgp_route_next(dest)) |
6986 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6987 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
6988 | } | |
6989 | ||
6990 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
6991 | void *arg) | |
6992 | { | |
6993 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6994 | ||
6995 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
6996 | } |