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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 | 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 | */ | |
d62a17ae | 69 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
021b6596 AD |
70 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *evpn); |
71 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *evpn); | |
72 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
73 | struct bgp_path_info *pi); | |
74 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
75 | struct bgp_path_info *pi); | |
dc6cef73 AD |
76 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
77 | void (*func)(struct hash_bucket *, | |
78 | void *), | |
79 | void *arg); | |
021b6596 AD |
80 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn); |
81 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
82 | struct bgpevpn *vpn); | |
83 | static unsigned int vni_svi_hash_key_make(const void *p); | |
84 | static bool vni_svi_hash_cmp(const void *p1, const void *p2); | |
85 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
86 | struct ipaddr *addr, | |
87 | bool resolve); | |
88 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
89 | void *args); | |
90 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
91 | void *args); | |
9c7edc03 | 92 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 93 | |
94 | /* | |
95 | * Private functions. | |
96 | */ | |
97 | ||
98 | /* | |
99 | * Make vni hash key. | |
100 | */ | |
d8b87afe | 101 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 102 | { |
d8b87afe | 103 | const struct bgpevpn *vpn = p; |
d62a17ae | 104 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 105 | } |
106 | ||
107 | /* | |
108 | * Comparison function for vni hash | |
109 | */ | |
74df8d6d | 110 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 111 | { |
d62a17ae | 112 | const struct bgpevpn *vpn1 = p1; |
113 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 114 | |
ce40c627 | 115 | return vpn1->vni == vpn2->vni; |
14c1a7bf | 116 | } |
117 | ||
c44ab6f1 | 118 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
119 | { |
120 | const struct bgpevpn *vpn1 = p1; | |
121 | const struct bgpevpn *vpn2 = p2; | |
122 | ||
123 | return vpn1->vni - vpn2->vni; | |
124 | } | |
125 | ||
10ebe1ab MK |
126 | /* |
127 | * Make vrf import route target hash key. | |
128 | */ | |
d8b87afe | 129 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 130 | { |
d8b87afe QY |
131 | const struct vrf_irt_node *irt = p; |
132 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
133 | |
134 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
135 | } |
136 | ||
137 | /* | |
138 | * Comparison function for vrf import rt hash | |
139 | */ | |
74df8d6d | 140 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
141 | { |
142 | const struct vrf_irt_node *irt1 = p1; | |
143 | const struct vrf_irt_node *irt2 = p2; | |
144 | ||
10ebe1ab MK |
145 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
146 | } | |
147 | ||
148 | /* | |
f9b8094e | 149 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
150 | */ |
151 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
152 | { | |
5e53dce3 | 153 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
154 | struct vrf_irt_node *irt; |
155 | ||
5e53dce3 T |
156 | bgp_evpn = bgp_get_evpn(); |
157 | if (!bgp_evpn) { | |
e50f7cfd | 158 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 159 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
160 | return NULL; |
161 | } | |
162 | ||
163 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
164 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
165 | |
166 | irt->rt = *rt; | |
167 | irt->vrfs = list_new(); | |
168 | ||
169 | /* Add to hash */ | |
ac390ef8 | 170 | (void)hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern); |
10ebe1ab MK |
171 | |
172 | return irt; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Free the vrf import rt node | |
177 | */ | |
178 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
179 | { | |
5e53dce3 | 180 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 181 | |
5e53dce3 T |
182 | bgp_evpn = bgp_get_evpn(); |
183 | if (!bgp_evpn) { | |
e50f7cfd | 184 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 185 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
186 | return; |
187 | } | |
188 | ||
5e53dce3 | 189 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 190 | list_delete(&irt->vrfs); |
10ebe1ab MK |
191 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
192 | } | |
193 | ||
194 | /* | |
195 | * Function to lookup Import RT node - used to map a RT to set of | |
196 | * VNIs importing routes with that RT. | |
197 | */ | |
198 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
199 | { | |
5e53dce3 | 200 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
201 | struct vrf_irt_node *irt; |
202 | struct vrf_irt_node tmp; | |
203 | ||
5e53dce3 T |
204 | bgp_evpn = bgp_get_evpn(); |
205 | if (!bgp_evpn) { | |
f9b8094e T |
206 | flog_err( |
207 | EC_BGP_NO_DFLT, | |
208 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
209 | return NULL; |
210 | } | |
211 | ||
6006b807 | 212 | memset(&tmp, 0, sizeof(tmp)); |
10ebe1ab | 213 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
5e53dce3 | 214 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
215 | return irt; |
216 | } | |
217 | ||
218 | /* | |
219 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
220 | */ | |
996c9314 | 221 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
222 | { |
223 | struct listnode *node = NULL, *nnode = NULL; | |
224 | struct bgp *tmp_bgp_vrf = NULL; | |
225 | ||
226 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
227 | if (tmp_bgp_vrf == bgp_vrf) | |
228 | return 1; | |
229 | } | |
230 | return 0; | |
231 | } | |
232 | ||
14c1a7bf | 233 | /* |
234 | * Make import route target hash key. | |
235 | */ | |
d8b87afe | 236 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 237 | { |
d8b87afe QY |
238 | const struct irt_node *irt = p; |
239 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
240 | |
241 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 242 | } |
243 | ||
244 | /* | |
245 | * Comparison function for import rt hash | |
246 | */ | |
74df8d6d | 247 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 248 | { |
d62a17ae | 249 | const struct irt_node *irt1 = p1; |
250 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 251 | |
d62a17ae | 252 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 253 | } |
254 | ||
7724c0a1 | 255 | /* |
128ea8ab | 256 | * Create a new import_rt |
257 | */ | |
d62a17ae | 258 | static struct irt_node *import_rt_new(struct bgp *bgp, |
259 | struct ecommunity_val *rt) | |
128ea8ab | 260 | { |
d62a17ae | 261 | struct irt_node *irt; |
128ea8ab | 262 | |
d62a17ae | 263 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 264 | |
d62a17ae | 265 | irt->rt = *rt; |
266 | irt->vnis = list_new(); | |
128ea8ab | 267 | |
d62a17ae | 268 | /* Add to hash */ |
ac390ef8 | 269 | (void)hash_get(bgp->import_rt_hash, irt, hash_alloc_intern); |
128ea8ab | 270 | |
d62a17ae | 271 | return irt; |
128ea8ab | 272 | } |
273 | ||
274 | /* | |
275 | * Free the import rt node | |
7724c0a1 | 276 | */ |
d62a17ae | 277 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 278 | { |
d62a17ae | 279 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 280 | list_delete(&irt->vnis); |
d62a17ae | 281 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 282 | } |
283 | ||
14c1a7bf | 284 | /* |
128ea8ab | 285 | * Function to lookup Import RT node - used to map a RT to set of |
286 | * VNIs importing routes with that RT. | |
287 | */ | |
d62a17ae | 288 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
289 | struct ecommunity_val *rt) | |
128ea8ab | 290 | { |
d62a17ae | 291 | struct irt_node *irt; |
292 | struct irt_node tmp; | |
128ea8ab | 293 | |
6006b807 | 294 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 295 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
296 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
297 | return irt; | |
128ea8ab | 298 | } |
299 | ||
300 | /* | |
301 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
302 | */ | |
d62a17ae | 303 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 304 | { |
d62a17ae | 305 | struct listnode *node, *nnode; |
306 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 307 | |
d62a17ae | 308 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
309 | if (tmp_vpn == vpn) | |
310 | return 1; | |
311 | } | |
128ea8ab | 312 | |
d62a17ae | 313 | return 0; |
128ea8ab | 314 | } |
315 | ||
316 | /* | |
317 | * Compare Route Targets. | |
318 | */ | |
f4a5218d AK |
319 | int bgp_evpn_route_target_cmp(struct ecommunity *ecom1, |
320 | struct ecommunity *ecom2) | |
128ea8ab | 321 | { |
d62a17ae | 322 | if (ecom1 && !ecom2) |
323 | return -1; | |
128ea8ab | 324 | |
d62a17ae | 325 | if (!ecom1 && ecom2) |
326 | return 1; | |
128ea8ab | 327 | |
d62a17ae | 328 | if (!ecom1 && !ecom2) |
329 | return 0; | |
128ea8ab | 330 | |
d62a17ae | 331 | if (ecom1->str && !ecom2->str) |
332 | return -1; | |
128ea8ab | 333 | |
d62a17ae | 334 | if (!ecom1->str && ecom2->str) |
335 | return 1; | |
128ea8ab | 336 | |
d62a17ae | 337 | if (!ecom1->str && !ecom2->str) |
338 | return 0; | |
128ea8ab | 339 | |
d62a17ae | 340 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 341 | } |
342 | ||
f4a5218d | 343 | void bgp_evpn_xxport_delete_ecomm(void *val) |
987d8198 DS |
344 | { |
345 | struct ecommunity *ecomm = val; | |
346 | ecommunity_free(&ecomm); | |
347 | } | |
348 | ||
128ea8ab | 349 | /* |
350 | * Mask off global-admin field of specified extended community (RT), | |
351 | * just retain the local-admin field. | |
352 | */ | |
d62a17ae | 353 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
354 | struct ecommunity_val *src) | |
128ea8ab | 355 | { |
d7c0a89a | 356 | uint8_t type; |
128ea8ab | 357 | |
d62a17ae | 358 | type = src->val[0]; |
359 | dst->val[0] = 0; | |
360 | if (type == ECOMMUNITY_ENCODE_AS) { | |
361 | dst->val[2] = dst->val[3] = 0; | |
362 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
363 | || type == ECOMMUNITY_ENCODE_IP) { | |
364 | dst->val[2] = dst->val[3] = 0; | |
365 | dst->val[4] = dst->val[5] = 0; | |
366 | } | |
128ea8ab | 367 | } |
368 | ||
10ebe1ab MK |
369 | /* |
370 | * Map one RT to specified VRF. | |
371 | * bgp_vrf = BGP vrf instance | |
372 | */ | |
996c9314 | 373 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
374 | { |
375 | struct vrf_irt_node *irt = NULL; | |
376 | struct ecommunity_val eval_tmp; | |
377 | ||
378 | /* If using "automatic" RT, | |
379 | * we only care about the local-admin sub-field. | |
380 | * This is to facilitate using L3VNI(VRF-VNI) | |
381 | * as the RT for EBGP peering too. | |
382 | */ | |
383 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 384 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
385 | mask_ecom_global_admin(&eval_tmp, eval); |
386 | ||
387 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
388 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
389 | /* Already mapped. */ | |
390 | return; | |
10ebe1ab | 391 | |
e066d6d0 | 392 | if (!irt) |
10ebe1ab | 393 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
394 | |
395 | /* Add VRF to the list for this RT. */ | |
396 | listnode_add(irt->vrfs, bgp_vrf); | |
397 | } | |
398 | ||
399 | /* | |
400 | * Unmap specified VRF from specified RT. If there are no other | |
401 | * VRFs for this RT, then the RT hash is deleted. | |
402 | * bgp_vrf: BGP VRF specific instance | |
403 | */ | |
996c9314 | 404 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
405 | { |
406 | /* Delete VRF from list for this RT. */ | |
407 | listnode_delete(irt->vrfs, bgp_vrf); | |
408 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
409 | vrf_import_rt_free(irt); |
410 | } | |
411 | } | |
412 | ||
128ea8ab | 413 | /* |
414 | * Map one RT to specified VNI. | |
14c1a7bf | 415 | */ |
d62a17ae | 416 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
417 | struct ecommunity_val *eval) | |
128ea8ab | 418 | { |
d62a17ae | 419 | struct irt_node *irt; |
420 | struct ecommunity_val eval_tmp; | |
128ea8ab | 421 | |
d62a17ae | 422 | /* If using "automatic" RT, we only care about the local-admin |
423 | * sub-field. | |
424 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
425 | */ | |
426 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
427 | if (!is_import_rt_configured(vpn)) | |
428 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 429 | |
d62a17ae | 430 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 431 | if (irt) |
d62a17ae | 432 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
433 | /* Already mapped. */ | |
434 | return; | |
128ea8ab | 435 | |
879e43a5 | 436 | if (!irt) |
d62a17ae | 437 | irt = import_rt_new(bgp, &eval_tmp); |
128ea8ab | 438 | |
d62a17ae | 439 | /* Add VNI to the hash list for this RT. */ |
440 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 441 | } |
442 | ||
443 | /* | |
444 | * Unmap specified VNI from specified RT. If there are no other | |
445 | * VNIs for this RT, then the RT hash is deleted. | |
446 | */ | |
d62a17ae | 447 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
448 | struct irt_node *irt) | |
14c1a7bf | 449 | { |
d62a17ae | 450 | /* Delete VNI from hash list for this RT. */ |
451 | listnode_delete(irt->vnis, vpn); | |
452 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 453 | import_rt_free(bgp, irt); |
454 | } | |
14c1a7bf | 455 | } |
456 | ||
0ca10580 | 457 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 458 | const struct prefix_evpn *p, |
0ca10580 CS |
459 | struct attr *attr, uint8_t flags) |
460 | { | |
461 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
462 | ||
463 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
464 | if (!bgp_vrf) | |
465 | return; | |
466 | ||
b96cafa3 CS |
467 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
468 | return; | |
469 | ||
470 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
471 | * in case of route is self MAC-IP, | |
472 | * advertise-pip and advertise-svi-ip features | |
473 | * are enabled. | |
474 | * Otherwise, for all host MAC-IP route's | |
27727001 | 475 | * copy anycast RMAC. |
b96cafa3 CS |
476 | */ |
477 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
478 | && bgp_vrf->evpn_info->advertise_pip && | |
479 | bgp_vrf->evpn_info->is_anycast_mac) { | |
480 | /* copy sys rmac */ | |
481 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
482 | ETH_ALEN); | |
483 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
484 | attr->mp_nexthop_global_in = | |
485 | bgp_vrf->evpn_info->pip_ip; | |
486 | } else | |
487 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 488 | } |
b96cafa3 | 489 | |
128ea8ab | 490 | /* |
491 | * Create RT extended community automatically from passed information: | |
492 | * of the form AS:VNI. | |
493 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
494 | * the need is to get a RT value that will be unique across different | |
495 | * VNIs but the same across routers (in the same AS) for a particular | |
496 | * VNI. | |
497 | */ | |
c581d8b0 | 498 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 499 | { |
d62a17ae | 500 | struct ecommunity_val eval; |
b90d4580 CS |
501 | struct ecommunity *ecomadd, *ecom; |
502 | bool ecom_found = false; | |
503 | struct listnode *node; | |
128ea8ab | 504 | |
bf1061d8 VB |
505 | if (bgp->advertise_autort_rfc8365) |
506 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 507 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 508 | |
d62a17ae | 509 | ecomadd = ecommunity_new(); |
1207a5bc | 510 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 | 511 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
d74a6cc1 | 512 | if (ecommunity_cmp(ecomadd, ecom)) { |
b90d4580 | 513 | ecom_found = true; |
d74a6cc1 | 514 | break; |
515 | } | |
b90d4580 CS |
516 | |
517 | if (!ecom_found) | |
518 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
519 | else |
520 | ecommunity_free(&ecomadd); | |
128ea8ab | 521 | } |
14c1a7bf | 522 | |
523 | /* | |
128ea8ab | 524 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
525 | * creation of a VNI. | |
526 | */ | |
d62a17ae | 527 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 528 | { |
d62a17ae | 529 | bgp_evpn_derive_auto_rd(bgp, vpn); |
530 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
531 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 532 | } |
533 | ||
1ec31309 | 534 | /* |
535 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
536 | */ | |
537 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
538 | { | |
539 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
540 | return; | |
541 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
542 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
543 | } | |
544 | ||
09319b4e DS |
545 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
546 | safi_t safi, | |
547 | const struct prefix_evpn *evp, | |
548 | struct prefix_rd *prd) | |
c44ab6f1 AK |
549 | { |
550 | struct prefix_evpn global_p; | |
551 | ||
552 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
553 | /* prefix in the global table doesn't include the VTEP-IP so | |
554 | * we need to create a different copy of the prefix | |
555 | */ | |
556 | evpn_type1_prefix_global_copy(&global_p, evp); | |
557 | evp = &global_p; | |
558 | } | |
559 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
560 | } | |
561 | ||
09319b4e DS |
562 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
563 | safi_t safi, | |
564 | const struct prefix_evpn *evp, | |
565 | struct prefix_rd *prd) | |
c44ab6f1 AK |
566 | { |
567 | struct prefix_evpn global_p; | |
568 | ||
569 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
570 | /* prefix in the global table doesn't include the VTEP-IP so | |
571 | * we need to create a different copy of the prefix | |
572 | */ | |
573 | evpn_type1_prefix_global_copy(&global_p, evp); | |
574 | evp = &global_p; | |
575 | } | |
576 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
577 | } | |
578 | ||
128ea8ab | 579 | /* |
580 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 581 | */ |
d62a17ae | 582 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 583 | const struct prefix_evpn *p, |
d62a17ae | 584 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 585 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 586 | { |
587 | struct stream *s; | |
0ffd0fb5 | 588 | uint16_t ipa_len; |
c44ab6f1 | 589 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 590 | |
591 | /* Check socket. */ | |
592 | if (!zclient || zclient->sock < 0) | |
593 | return 0; | |
594 | ||
595 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
596 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
597 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
598 | zlog_debug( |
599 | "%s: No zebra instance to talk to, not installing remote macip", | |
600 | __func__); | |
d62a17ae | 601 | return 0; |
bb4ef1ae | 602 | } |
c44ab6f1 AK |
603 | |
604 | if (!esi) | |
605 | esi = zero_esi; | |
d62a17ae | 606 | s = zclient->obuf; |
607 | stream_reset(s); | |
608 | ||
996c9314 LB |
609 | zclient_create_header( |
610 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
611 | bgp->vrf_id); | |
d62a17ae | 612 | stream_putl(s, vpn->vni); |
3714a385 | 613 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 614 | /* IP address length and IP address, if any. */ |
3714a385 | 615 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 616 | stream_putw(s, 0); |
d62a17ae | 617 | else { |
3714a385 | 618 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 619 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 620 | stream_putw(s, ipa_len); |
3714a385 | 621 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 622 | } |
9c7edc03 AK |
623 | /* If the ESI is valid that becomes the nexthop; tape out the |
624 | * VTEP-IP for that case | |
c44ab6f1 | 625 | */ |
9c7edc03 | 626 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 627 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
628 | else |
629 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 630 | |
ead40654 | 631 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 632 | /* Also TX the sequence number of the best route. */ |
633 | if (add) { | |
ead40654 | 634 | stream_putc(s, flags); |
f07e1c99 | 635 | stream_putl(s, seq); |
c44ab6f1 | 636 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 637 | } |
d62a17ae | 638 | |
639 | stream_putw_at(s, 0, stream_get_endp(s)); | |
640 | ||
641 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 642 | zlog_debug( |
c0d72166 | 643 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4", |
996c9314 | 644 | add ? "ADD" : "DEL", vpn->vni, |
c0d72166 DS |
645 | &p->prefix.macip_addr.mac, &p->prefix.macip_addr.ip, |
646 | flags, seq, &remote_vtep_ip); | |
d62a17ae | 647 | |
23aa35ad AK |
648 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
649 | esi); | |
650 | ||
d62a17ae | 651 | return zclient_send_message(zclient); |
7ef5a232 | 652 | } |
b18825eb | 653 | |
128ea8ab | 654 | /* |
655 | * Add (update) or delete remote VTEP from zebra. | |
656 | */ | |
d62a17ae | 657 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
658 | const struct prefix_evpn *p, |
659 | int flood_control, int add) | |
128ea8ab | 660 | { |
d62a17ae | 661 | struct stream *s; |
128ea8ab | 662 | |
d62a17ae | 663 | /* Check socket. */ |
664 | if (!zclient || zclient->sock < 0) | |
665 | return 0; | |
128ea8ab | 666 | |
d62a17ae | 667 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
668 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
669 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
670 | zlog_debug( |
671 | "%s: No zebra instance to talk to, not installing remote vtep", | |
672 | __func__); | |
d62a17ae | 673 | return 0; |
bb4ef1ae | 674 | } |
128ea8ab | 675 | |
d62a17ae | 676 | s = zclient->obuf; |
677 | stream_reset(s); | |
128ea8ab | 678 | |
996c9314 LB |
679 | zclient_create_header( |
680 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
681 | bgp->vrf_id); | |
d62a17ae | 682 | stream_putl(s, vpn->vni); |
3714a385 | 683 | if (is_evpn_prefix_ipaddr_v4(p)) |
684 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
685 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 686 | flog_err( |
e50f7cfd | 687 | EC_BGP_VTEP_INVALID, |
d62a17ae | 688 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
689 | add ? "ADD" : "DEL", vpn->vni); | |
690 | return -1; | |
691 | } | |
b16dd019 | 692 | stream_putl(s, flood_control); |
128ea8ab | 693 | |
d62a17ae | 694 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 695 | |
d62a17ae | 696 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 697 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 698 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 699 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 700 | |
23aa35ad AK |
701 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
702 | ||
d62a17ae | 703 | return zclient_send_message(zclient); |
128ea8ab | 704 | } |
705 | ||
342dd0c6 | 706 | /* |
707 | * Build extended communities for EVPN prefix route. | |
708 | */ | |
709 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
710 | struct attr *attr) | |
711 | { | |
712 | struct ecommunity ecom_encap; | |
342dd0c6 | 713 | struct ecommunity_val eval; |
714 | struct ecommunity_val eval_rmac; | |
715 | bgp_encap_types tnl_type; | |
716 | struct listnode *node, *nnode; | |
717 | struct ecommunity *ecom; | |
fab92da7 | 718 | struct ecommunity *old_ecom; |
342dd0c6 | 719 | struct list *vrf_export_rtl = NULL; |
720 | ||
721 | /* Encap */ | |
722 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
723 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
724 | encode_encap_extcomm(tnl_type, &eval); | |
725 | ecom_encap.size = 1; | |
34540b0d | 726 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 727 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 728 | |
729 | /* Add Encap */ | |
b53e67a3 DA |
730 | if (bgp_attr_get_ecommunity(attr)) { |
731 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 732 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
733 | if (!old_ecom->refcnt) | |
734 | ecommunity_free(&old_ecom); | |
735 | } else | |
736 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 737 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 738 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 739 | |
740 | /* Add the export RTs for L3VNI/VRF */ | |
741 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f | 742 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
743 | bgp_attr_set_ecommunity( |
744 | attr, | |
745 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
342dd0c6 | 746 | |
747 | /* add the router mac extended community */ | |
748 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 749 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
750 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
751 | true, true); | |
342dd0c6 | 752 | } |
342dd0c6 | 753 | } |
754 | ||
128ea8ab | 755 | /* |
1ec31309 | 756 | * Build extended communities for EVPN route. |
757 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
758 | * and ENCAP extended communities are applicable for all routes. | |
759 | * The default gateway extended community and MAC mobility (sticky) extended | |
760 | * community are added as needed based on passed settings - only for type-2 | |
761 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
762 | * added, if present, based on passed settings - only for non-link-local | |
763 | * type-2 routes. | |
128ea8ab | 764 | */ |
7ec156a9 | 765 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 766 | int add_l3_ecomm) |
128ea8ab | 767 | { |
d62a17ae | 768 | struct ecommunity ecom_encap; |
769 | struct ecommunity ecom_sticky; | |
ead40654 | 770 | struct ecommunity ecom_default_gw; |
68e33151 | 771 | struct ecommunity ecom_na; |
d62a17ae | 772 | struct ecommunity_val eval; |
773 | struct ecommunity_val eval_sticky; | |
ead40654 | 774 | struct ecommunity_val eval_default_gw; |
bc59a672 | 775 | struct ecommunity_val eval_rmac; |
68e33151 | 776 | struct ecommunity_val eval_na; |
9c7edc03 | 777 | bool proxy; |
68e33151 | 778 | |
d62a17ae | 779 | bgp_encap_types tnl_type; |
780 | struct listnode *node, *nnode; | |
781 | struct ecommunity *ecom; | |
d7c0a89a | 782 | uint32_t seqnum; |
7a3e76f1 | 783 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 784 | |
d62a17ae | 785 | /* Encap */ |
786 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
787 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
788 | encode_encap_extcomm(tnl_type, &eval); | |
789 | ecom_encap.size = 1; | |
34540b0d | 790 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 791 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 792 | |
d62a17ae | 793 | /* Add Encap */ |
b53e67a3 | 794 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 795 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 796 | |
7a3e76f1 | 797 | /* Add the export RTs for L2VNI */ |
d62a17ae | 798 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
799 | bgp_attr_set_ecommunity( |
800 | attr, | |
801 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 802 | |
1ec31309 | 803 | /* Add the export RTs for L3VNI if told to - caller determines |
804 | * when this should be done. | |
523cafc4 | 805 | */ |
1ec31309 | 806 | if (add_l3_ecomm) { |
7ec156a9 MK |
807 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
808 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
809 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
810 | ecom)) | |
b53e67a3 DA |
811 | bgp_attr_set_ecommunity( |
812 | attr, | |
813 | ecommunity_merge( | |
814 | bgp_attr_get_ecommunity(attr), | |
815 | ecom)); | |
7ec156a9 | 816 | } |
f1f8b53c | 817 | } |
7a3e76f1 | 818 | |
1ec31309 | 819 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 820 | if (attr->sticky) { |
821 | seqnum = 0; | |
822 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
823 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
824 | ecom_sticky.size = 1; | |
34540b0d | 825 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 826 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
827 | bgp_attr_set_ecommunity( |
828 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
829 | &ecom_sticky)); | |
d62a17ae | 830 | } |
c85c03c7 | 831 | |
1ec31309 | 832 | /* Add RMAC, if told to. */ |
833 | if (add_l3_ecomm) { | |
bc59a672 | 834 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
835 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
836 | true, true); | |
bc59a672 MK |
837 | } |
838 | ||
1ec31309 | 839 | /* Add default gateway, if needed. */ |
ead40654 MK |
840 | if (attr->default_gw) { |
841 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
842 | encode_default_gw_extcomm(&eval_default_gw); | |
843 | ecom_default_gw.size = 1; | |
34540b0d | 844 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 845 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
846 | bgp_attr_set_ecommunity( |
847 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
848 | &ecom_default_gw)); | |
ead40654 MK |
849 | } |
850 | ||
9c7edc03 AK |
851 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
852 | if (attr->router_flag || proxy) { | |
68e33151 | 853 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 854 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 855 | ecom_na.size = 1; |
34540b0d | 856 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 857 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
858 | bgp_attr_set_ecommunity( |
859 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
860 | &ecom_na)); | |
68e33151 | 861 | } |
128ea8ab | 862 | } |
863 | ||
864 | /* | |
865 | * Add MAC mobility extended community to attribute. | |
866 | */ | |
d7c0a89a | 867 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 868 | { |
869 | struct ecommunity ecom_tmp; | |
870 | struct ecommunity_val eval; | |
d7c0a89a | 871 | uint8_t *ecom_val_ptr; |
f6e07e1b | 872 | uint32_t i; |
d7c0a89a | 873 | uint8_t *pnt; |
d62a17ae | 874 | int type = 0; |
875 | int sub_type = 0; | |
b53e67a3 | 876 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 877 | |
878 | /* Build MM */ | |
879 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
880 | ||
881 | /* Find current MM ecommunity */ | |
421bb26a | 882 | ecom_val_ptr = NULL; |
d62a17ae | 883 | |
b53e67a3 DA |
884 | if (ecomm) { |
885 | for (i = 0; i < ecomm->size; i++) { | |
886 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 887 | type = *pnt++; |
888 | sub_type = *pnt++; | |
889 | ||
890 | if (type == ECOMMUNITY_ENCODE_EVPN | |
891 | && sub_type | |
892 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 893 | ecom_val_ptr = |
b53e67a3 | 894 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 895 | break; |
896 | } | |
897 | } | |
898 | } | |
899 | ||
900 | /* Update the existing MM ecommunity */ | |
421bb26a | 901 | if (ecom_val_ptr) { |
b53e67a3 | 902 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 903 | } |
904 | /* Add MM to existing */ | |
905 | else { | |
906 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
907 | ecom_tmp.size = 1; | |
34540b0d | 908 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 909 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 910 | |
b53e67a3 DA |
911 | if (ecomm) |
912 | bgp_attr_set_ecommunity( | |
913 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 914 | else |
b53e67a3 DA |
915 | bgp_attr_set_ecommunity(attr, |
916 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 917 | } |
128ea8ab | 918 | } |
919 | ||
920 | /* Install EVPN route into zebra. */ | |
d62a17ae | 921 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
922 | const struct prefix_evpn *p, |
923 | struct bgp_path_info *pi) | |
128ea8ab | 924 | { |
d62a17ae | 925 | int ret; |
d594a14c | 926 | uint8_t flags; |
b16dd019 | 927 | int flood_control; |
9c7edc03 | 928 | uint32_t seq; |
128ea8ab | 929 | |
d594a14c AK |
930 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
931 | flags = 0; | |
9c7edc03 AK |
932 | |
933 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
934 | if (pi->attr->sticky) | |
935 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
936 | if (pi->attr->default_gw) | |
937 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
938 | if (is_evpn_prefix_ipaddr_v6(p) && | |
939 | pi->attr->router_flag) | |
940 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
941 | ||
942 | seq = mac_mobility_seqnum(pi->attr); | |
943 | /* if local ES notify zebra that this is a sync path */ | |
944 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
945 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
946 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
947 | SET_FLAG(flags, | |
948 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
949 | } | |
950 | } else { | |
951 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
952 | return 0; | |
953 | ||
954 | /* if a local path is being turned around and sent | |
955 | * to zebra it is because it is a sync path on | |
956 | * a local ES | |
957 | */ | |
958 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
959 | /* supply the highest peer seq number to zebra | |
960 | * for MM seq syncing | |
961 | */ | |
962 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
963 | /* if any of the paths from the peer have the ROUTER | |
964 | * flag set install the local entry as a router entry | |
965 | */ | |
966 | if (is_evpn_prefix_ipaddr_v6(p) && | |
967 | (pi->attr->es_flags & | |
968 | ATTR_ES_PEER_ROUTER)) | |
969 | SET_FLAG(flags, | |
970 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
971 | ||
972 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
973 | SET_FLAG(flags, | |
974 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
975 | } | |
976 | ||
d594a14c | 977 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
978 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
979 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
980 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
981 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 982 | } else { |
2a3f51cf | 983 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
984 | case PMSI_TNLTYPE_INGR_REPL: |
985 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
986 | break; | |
987 | ||
988 | case PMSI_TNLTYPE_PIM_SM: | |
989 | flood_control = VXLAN_FLOOD_PIM_SM; | |
990 | break; | |
991 | ||
992 | default: | |
993 | flood_control = VXLAN_FLOOD_DISABLED; | |
994 | break; | |
995 | } | |
996 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 997 | } |
128ea8ab | 998 | |
d62a17ae | 999 | return ret; |
128ea8ab | 1000 | } |
1001 | ||
1002 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1003 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1004 | const struct prefix_evpn *p, |
d62a17ae | 1005 | struct in_addr remote_vtep_ip) |
128ea8ab | 1006 | { |
d62a17ae | 1007 | int ret; |
128ea8ab | 1008 | |
d62a17ae | 1009 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1010 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1011 | 0, 0, 0, NULL); |
1012 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1013 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1014 | else |
b16dd019 AK |
1015 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1016 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1017 | |
d62a17ae | 1018 | return ret; |
128ea8ab | 1019 | } |
1020 | ||
1021 | /* | |
1022 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1023 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1024 | * from peers. | |
1025 | */ | |
d62a17ae | 1026 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1027 | struct bgp_dest *dest, |
9c7edc03 AK |
1028 | struct bgp_path_info *old_local, |
1029 | struct bgp_path_info *new_select) | |
128ea8ab | 1030 | { |
9bcb3eef | 1031 | struct bgp_dest *global_dest; |
40381db7 | 1032 | struct bgp_path_info *pi; |
d62a17ae | 1033 | afi_t afi = AFI_L2VPN; |
1034 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1035 | |
9c7edc03 | 1036 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1037 | char esi_buf[ESI_STR_LEN]; |
1038 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1039 | struct prefix_evpn *evp = |
1040 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1041 | |
2dbe669b DA |
1042 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1043 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1044 | sizeof(esi_buf)), | |
1045 | new_select ? esi_to_str(&new_select->attr->esi, | |
1046 | esi_buf2, sizeof(esi_buf2)) | |
1047 | : ""); | |
9c7edc03 AK |
1048 | } |
1049 | ||
d62a17ae | 1050 | /* Locate route node in the global EVPN routing table. Note that |
1051 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1052 | * L3VPN routes. | |
1053 | */ | |
c44ab6f1 AK |
1054 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1055 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1056 | &vpn->prd); | |
9bcb3eef | 1057 | if (global_dest) { |
d62a17ae | 1058 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1059 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1060 | |
d62a17ae | 1061 | /* Schedule for processing - withdraws to peers happen from |
1062 | * this table. | |
1063 | */ | |
40381db7 | 1064 | if (pi) |
9bcb3eef DS |
1065 | bgp_process(bgp, global_dest, afi, safi); |
1066 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1067 | } |
128ea8ab | 1068 | |
d62a17ae | 1069 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1070 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1071 | } |
1072 | ||
1073 | /* | |
1074 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1075 | * if appropriate. | |
c44ab6f1 | 1076 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1077 | */ |
c44ab6f1 | 1078 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1079 | struct bgp_dest *dest) |
d62a17ae | 1080 | { |
4b7e6066 DS |
1081 | struct bgp_path_info *old_select, *new_select; |
1082 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1083 | afi_t afi = AFI_L2VPN; |
1084 | safi_t safi = SAFI_EVPN; | |
1085 | int ret = 0; | |
1086 | ||
1087 | /* Compute the best path. */ | |
9bcb3eef | 1088 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1089 | afi, safi); |
1090 | old_select = old_and_new.old; | |
1091 | new_select = old_and_new.new; | |
1092 | ||
1093 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1094 | * update to zebra RIB. |
1095 | * Remote routes and SYNC route (i.e. local routes with | |
1096 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1097 | * change. | |
d62a17ae | 1098 | */ |
1099 | if (old_select && old_select == new_select | |
1100 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1101 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1102 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1103 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1104 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1105 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1106 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1107 | ret = evpn_zebra_install( |
9bcb3eef DS |
1108 | bgp, vpn, |
1109 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1110 | dest), | |
d594a14c | 1111 | old_select); |
1defdda8 | 1112 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1113 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1114 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1115 | return ret; |
1116 | } | |
1117 | ||
1118 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1119 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1120 | |
1121 | /* bestpath has changed; update relevant fields and install or uninstall | |
1122 | * into the zebra RIB. | |
1123 | */ | |
1124 | if (old_select || new_select) | |
9bcb3eef | 1125 | bgp_bump_version(dest); |
d62a17ae | 1126 | |
1127 | if (old_select) | |
9bcb3eef | 1128 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1129 | if (new_select) { |
9bcb3eef DS |
1130 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1131 | bgp_path_info_unset_flag(dest, new_select, | |
1132 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1133 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1134 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1135 | } |
1136 | ||
9c7edc03 AK |
1137 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1138 | * to zebra | |
1139 | */ | |
d62a17ae | 1140 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1141 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1142 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1143 | ret = evpn_zebra_install( |
9bcb3eef DS |
1144 | bgp, vpn, |
1145 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1146 | new_select); |
d594a14c | 1147 | |
d62a17ae | 1148 | /* If an old best existed and it was a "local" route, the only |
1149 | * reason | |
1150 | * it would be supplanted is due to MAC mobility procedures. So, | |
1151 | * we | |
1152 | * need to do an implicit delete and withdraw that route from | |
1153 | * peers. | |
1154 | */ | |
9c7edc03 AK |
1155 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1156 | old_select && old_select->peer == bgp->peer_self | |
1157 | && old_select->type == ZEBRA_ROUTE_BGP | |
1158 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1159 | && vpn) | |
1160 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1161 | old_select, new_select); | |
d62a17ae | 1162 | } else { |
1163 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1164 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1165 | ret = evpn_zebra_uninstall( |
1166 | bgp, vpn, | |
9bcb3eef DS |
1167 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1168 | dest), | |
b54892e0 | 1169 | old_select->attr->nexthop); |
d62a17ae | 1170 | } |
1171 | ||
1172 | /* Clear any route change flags. */ | |
9bcb3eef | 1173 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1174 | |
18ee8310 | 1175 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1176 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1177 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1178 | |
1179 | return ret; | |
128ea8ab | 1180 | } |
1181 | ||
9c7edc03 AK |
1182 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1183 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1184 | { |
40381db7 | 1185 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1186 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1187 | |
9bcb3eef | 1188 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1189 | tmp_pi = tmp_pi->next) { |
1190 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1191 | local_pi = tmp_pi; |
9c7edc03 AK |
1192 | break; |
1193 | } | |
d62a17ae | 1194 | } |
c85c03c7 | 1195 | |
9c7edc03 | 1196 | return local_pi; |
c85c03c7 | 1197 | } |
1198 | ||
5e53dce3 | 1199 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1200 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1201 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1202 | struct attr *attr, int *route_changed) |
342dd0c6 | 1203 | { |
1204 | struct attr *attr_new = NULL; | |
40381db7 | 1205 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1206 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1207 | struct bgp_path_info *local_pi = NULL; |
1208 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1209 | |
5424b7ba | 1210 | *route_changed = 0; |
342dd0c6 | 1211 | /* locate the local route entry if any */ |
9bcb3eef | 1212 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1213 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1214 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1215 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1216 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1217 | local_pi = tmp_pi; | |
342dd0c6 | 1218 | } |
1219 | ||
2bb9eff4 | 1220 | /* |
0437e105 | 1221 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1222 | * Otherwise see if route attr has changed |
523cafc4 | 1223 | */ |
40381db7 | 1224 | if (!local_pi) { |
342dd0c6 | 1225 | |
5424b7ba MK |
1226 | /* route has changed as this is the first entry */ |
1227 | *route_changed = 1; | |
1228 | ||
342dd0c6 | 1229 | /* Add (or update) attribute to hash. */ |
1230 | attr_new = bgp_attr_intern(attr); | |
1231 | ||
1232 | /* create the route info from attribute */ | |
40381db7 | 1233 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1234 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1235 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1236 | |
b57ba6d2 | 1237 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1238 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1239 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1240 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1241 | pi->extra->num_labels = 1; | |
342dd0c6 | 1242 | |
1243 | /* add the route entry to route node*/ | |
9bcb3eef | 1244 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1245 | } else { |
1246 | ||
40381db7 DS |
1247 | tmp_pi = local_pi; |
1248 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1249 | |
1250 | /* attribute changed */ | |
1251 | *route_changed = 1; | |
1252 | ||
342dd0c6 | 1253 | /* The attribute has changed. */ |
1254 | /* Add (or update) attribute to hash. */ | |
1255 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1256 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1257 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1258 | |
1259 | /* Restore route, if needed. */ | |
40381db7 | 1260 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1261 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1262 | |
1263 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1264 | bgp_attr_unintern(&tmp_pi->attr); |
1265 | tmp_pi->attr = attr_new; | |
1266 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1267 | } |
1268 | } | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | /* update evpn type-5 route entry */ | |
996c9314 | 1273 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1274 | struct attr *src_attr, afi_t src_afi, |
1275 | safi_t src_safi) | |
342dd0c6 | 1276 | { |
1277 | afi_t afi = AFI_L2VPN; | |
1278 | safi_t safi = SAFI_EVPN; | |
1279 | struct attr attr; | |
9bcb3eef | 1280 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1281 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1282 | int route_changed = 0; |
342dd0c6 | 1283 | |
5e53dce3 T |
1284 | bgp_evpn = bgp_get_evpn(); |
1285 | if (!bgp_evpn) | |
faafdfa8 | 1286 | return 0; |
342dd0c6 | 1287 | |
2f69f6d3 | 1288 | /* Build path attribute for this route - use the source attr, if |
1289 | * present, else treat as locally originated. | |
1290 | */ | |
1291 | if (src_attr) | |
6f4f49b2 | 1292 | attr = *src_attr; |
2f69f6d3 | 1293 | else { |
6006b807 | 1294 | memset(&attr, 0, sizeof(attr)); |
0f05ea43 | 1295 | bgp_attr_default_set(&attr, bgp_vrf, BGP_ORIGIN_IGP); |
2f69f6d3 | 1296 | } |
5394a276 | 1297 | |
5394a276 CS |
1298 | /* Advertise Primary IP (PIP) is enabled, send individual |
1299 | * IP (default instance router-id) as nexthop. | |
1300 | * PIP is disabled or vrr interface is not present | |
27727001 | 1301 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1302 | */ |
1303 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1304 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1305 | attr.nexthop = bgp_vrf->originator_ip; | |
1306 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1307 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1308 | } else { |
27727001 CS |
1309 | /* copy sys rmac */ |
1310 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1311 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1312 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1313 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1314 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1315 | if (bgp_debug_zebra(NULL)) |
1316 | zlog_debug( | |
1317 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1318 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1319 | } |
1320 | ||
c0d72166 DS |
1321 | if (bgp_debug_zebra(NULL)) |
1322 | zlog_debug( | |
1323 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1324 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1325 | &attr.nexthop); | |
5394a276 | 1326 | |
342dd0c6 | 1327 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1328 | |
6c995628 AD |
1329 | if (src_afi == AFI_IP6 && |
1330 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1331 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1332 | if (src_attr && | |
1333 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1334 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1335 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1336 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1337 | &src_attr->mp_nexthop_global, |
1338 | sizeof(struct in6_addr)); | |
1339 | } | |
1340 | } else if (src_afi == AFI_IP && | |
1341 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1342 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1343 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1344 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1345 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1346 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1347 | &src_attr->nexthop, sizeof(struct in_addr)); |
1348 | } | |
1349 | } | |
1350 | ||
342dd0c6 | 1351 | /* Setup RT and encap extended community */ |
1352 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1353 | ||
1354 | /* get the route node in global table */ | |
c44ab6f1 AK |
1355 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1356 | (const struct prefix_evpn *)evp, | |
1357 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1358 | assert(dest); |
342dd0c6 | 1359 | |
1360 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1361 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1362 | &route_changed); |
342dd0c6 | 1363 | |
1364 | /* schedule for processing and unlock node */ | |
5424b7ba | 1365 | if (route_changed) { |
9bcb3eef DS |
1366 | bgp_process(bgp_evpn, dest, afi, safi); |
1367 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1368 | } |
342dd0c6 | 1369 | |
1370 | /* uninten temporary */ | |
5ee65f6f | 1371 | if (!src_attr) |
1372 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1373 | return 0; |
1374 | } | |
1375 | ||
9c7edc03 | 1376 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1377 | struct bgp_dest *dest, uint32_t loc_seq, |
1378 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1379 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1380 | { |
1381 | struct bgp_path_info *tmp_pi; | |
1382 | struct bgp_path_info *second_best_path = NULL; | |
1383 | uint32_t tmp_mm_seq = 0; | |
1384 | esi_t *tmp_esi; | |
1385 | int paths_eq; | |
1386 | ||
1387 | /* find the best non-local path. a local path can only be present | |
1388 | * as best path | |
1389 | */ | |
09319b4e DS |
1390 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1391 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1392 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1393 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1394 | continue; | |
1395 | ||
1396 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1397 | second_best_path, &paths_eq)) | |
1398 | second_best_path = tmp_pi; | |
1399 | } | |
1400 | ||
1401 | if (!second_best_path) | |
1402 | return; | |
1403 | ||
1404 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1405 | /* if this has the same ES desination as the local path | |
1406 | * it is a sync path | |
1407 | */ | |
1408 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1409 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1410 | if (tmp_mm_seq < loc_seq) | |
1411 | return; | |
1412 | ||
1413 | /* we have a non-proxy path from the ES peer. */ | |
1414 | if (second_best_path->attr->es_flags & | |
1415 | ATTR_ES_PROXY_ADVERT) { | |
1416 | *proxy_from_peer = true; | |
1417 | } else { | |
1418 | *active_on_peer = true; | |
1419 | } | |
1420 | ||
1421 | if (second_best_path->attr->router_flag) | |
1422 | *peer_router = true; | |
1423 | ||
1424 | /* we use both proxy and non-proxy imports to | |
1425 | * determine the max sync sequence | |
1426 | */ | |
1427 | if (tmp_mm_seq > *max_sync_seq) | |
1428 | *max_sync_seq = tmp_mm_seq; | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1433 | * This is need for MM sequence number syncing and proxy advertisement. | |
1434 | * Note: The local path can only exist as a best path in the | |
1435 | * VPN route table. It will take precedence over all sync paths. | |
1436 | */ | |
1437 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1438 | struct bgp_dest *dest, |
1439 | struct attr *attr, | |
1440 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1441 | { |
1442 | esi_t *esi; | |
752eed47 DS |
1443 | struct prefix_evpn *evp = |
1444 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1445 | |
1446 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1447 | return; | |
1448 | ||
1449 | esi = bgp_evpn_attr_get_esi(attr); | |
1450 | if (bgp_evpn_is_esi_valid(esi)) { | |
1451 | if (setup_sync) { | |
1452 | uint32_t max_sync_seq = 0; | |
1453 | bool active_on_peer = false; | |
1454 | bool peer_router = false; | |
1455 | bool proxy_from_peer = false; | |
1456 | ||
09319b4e DS |
1457 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1458 | &max_sync_seq, &active_on_peer, | |
1459 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1460 | attr->mm_sync_seqnum = max_sync_seq; |
1461 | if (active_on_peer) | |
1462 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1463 | else | |
1464 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1465 | if (proxy_from_peer) | |
1466 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1467 | else | |
1468 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1469 | if (peer_router) | |
1470 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1471 | else | |
1472 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1473 | ||
1474 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1475 | char esi_buf[ESI_STR_LEN]; |
1476 | ||
2dbe669b DA |
1477 | zlog_debug( |
1478 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1479 | evp, | |
9c7edc03 | 1480 | esi_to_str(esi, esi_buf, |
2dbe669b | 1481 | sizeof(esi_buf)), |
9c7edc03 | 1482 | max_sync_seq, |
2dbe669b DA |
1483 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1484 | ? "peer-active " | |
1485 | : "", | |
1486 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1487 | ? "peer-proxy " | |
1488 | : "", | |
1489 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1490 | ? "peer-router " | |
1491 | : ""); | |
9c7edc03 AK |
1492 | } |
1493 | } | |
1494 | } else { | |
1495 | attr->mm_sync_seqnum = 0; | |
1496 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1497 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1498 | } | |
1499 | } | |
1500 | ||
128ea8ab | 1501 | /* |
1502 | * Create or update EVPN route entry. This could be in the VNI route table | |
1503 | * or the global route table. | |
1504 | */ | |
d62a17ae | 1505 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1506 | afi_t afi, safi_t safi, |
1507 | struct bgp_dest *dest, struct attr *attr, | |
1508 | int add, struct bgp_path_info **pi, | |
1509 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1510 | bool *old_is_sync) |
d62a17ae | 1511 | { |
40381db7 DS |
1512 | struct bgp_path_info *tmp_pi; |
1513 | struct bgp_path_info *local_pi; | |
d62a17ae | 1514 | struct attr *attr_new; |
b57ba6d2 | 1515 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1516 | uint32_t num_labels = 1; |
d62a17ae | 1517 | int route_change = 1; |
d7c0a89a | 1518 | uint8_t sticky = 0; |
b54892e0 | 1519 | const struct prefix_evpn *evp; |
d62a17ae | 1520 | |
40381db7 | 1521 | *pi = NULL; |
9bcb3eef | 1522 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1523 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1524 | |
f07e1c99 | 1525 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1526 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1527 | |
1528 | /* If route doesn't exist already, create a new one, if told to. | |
1529 | * Otherwise act based on whether the attributes of the route have | |
1530 | * changed or not. | |
1531 | */ | |
40381db7 | 1532 | if (!local_pi && !add) |
d62a17ae | 1533 | return 0; |
1534 | ||
9c7edc03 AK |
1535 | if (old_is_sync && local_pi) |
1536 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1537 | ||
1538 | /* if a local path is being added with a non-zero esi look | |
1539 | * for SYNC paths from ES peers and bubble up the sync-info | |
1540 | */ | |
26c03e43 | 1541 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1542 | |
f07e1c99 | 1543 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1544 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1545 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1546 | |
40381db7 | 1547 | if (!local_pi) { |
d62a17ae | 1548 | /* Add (or update) attribute to hash. */ |
1549 | attr_new = bgp_attr_intern(attr); | |
1550 | ||
1551 | /* Extract MAC mobility sequence number, if any. */ | |
1552 | attr_new->mm_seqnum = | |
1553 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1554 | attr_new->sticky = sticky; | |
1555 | ||
1556 | /* Create new route with its attribute. */ | |
40381db7 | 1557 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1558 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1559 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1560 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1561 | |
1562 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1563 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1564 | |
1565 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1566 | * Only attach second label if we are advertising two labels for | |
1567 | * type-2 routes. | |
1568 | */ | |
996c9314 LB |
1569 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1570 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1571 | vni_t l3vni; |
1572 | ||
1573 | l3vni = bgpevpn_get_l3vni(vpn); | |
1574 | if (l3vni) { | |
1575 | vni2label(l3vni, &label[1]); | |
1576 | num_labels++; | |
1577 | } | |
1578 | } | |
d62a17ae | 1579 | |
40381db7 DS |
1580 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1581 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1582 | /* Mark route as self type-2 route */ |
1583 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1584 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1585 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1586 | } else { |
40381db7 DS |
1587 | tmp_pi = local_pi; |
1588 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1589 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1590 | route_change = 0; |
1591 | else { | |
c48d9f5f MK |
1592 | /* |
1593 | * The attributes have changed, type-2 routes needs to | |
1594 | * be advertised with right labels. | |
1595 | */ | |
1596 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1597 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1598 | && CHECK_FLAG(vpn->flags, | |
1599 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1600 | vni_t l3vni; |
1601 | ||
1602 | l3vni = bgpevpn_get_l3vni(vpn); | |
1603 | if (l3vni) { | |
1604 | vni2label(l3vni, &label[1]); | |
1605 | num_labels++; | |
1606 | } | |
1607 | } | |
40381db7 DS |
1608 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1609 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1610 | |
d62a17ae | 1611 | /* The attribute has changed. */ |
1612 | /* Add (or update) attribute to hash. */ | |
1613 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1614 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1615 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1616 | |
f07e1c99 | 1617 | /* Extract MAC mobility sequence number, if any. */ |
1618 | attr_new->mm_seqnum = | |
1619 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1620 | attr_new->sticky = sticky; | |
1621 | ||
d62a17ae | 1622 | /* Restore route, if needed. */ |
40381db7 | 1623 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1624 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1625 | |
1626 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1627 | bgp_attr_unintern(&tmp_pi->attr); |
1628 | tmp_pi->attr = attr_new; | |
1629 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1630 | } |
1631 | } | |
1632 | ||
58bff4d1 AK |
1633 | /* local MAC-IP routes in the VNI table are linked to |
1634 | * the destination ES | |
26c03e43 AK |
1635 | */ |
1636 | if (route_change && vpn_rt | |
1637 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1638 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1639 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1640 | ||
d62a17ae | 1641 | /* Return back the route entry. */ |
40381db7 | 1642 | *pi = tmp_pi; |
d62a17ae | 1643 | return route_change; |
128ea8ab | 1644 | } |
1645 | ||
ec0ab544 | 1646 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1647 | struct bgpevpn *vpn, |
1648 | struct bgp_dest *dest) | |
ec0ab544 AK |
1649 | { |
1650 | struct bgp_path_info *tmp_ri; | |
1651 | struct bgp_path_info *curr_select = NULL; | |
1652 | ||
9bcb3eef DS |
1653 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1654 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1655 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1656 | curr_select = tmp_ri; | |
1657 | break; | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1662 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1663 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1664 | evpn_zebra_install(bgp, vpn, | |
1665 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1666 | curr_select); | |
ec0ab544 AK |
1667 | } |
1668 | ||
6d8c603a AK |
1669 | /* |
1670 | * If the local route was not selected evict it and tell zebra to re-add | |
1671 | * the best remote dest. | |
1672 | * | |
1673 | * Typically a local path added by zebra is expected to be selected as | |
1674 | * best. In which case when a remote path wins as best (later) | |
1675 | * evpn_route_select_install itself evicts the older-local-best path. | |
1676 | * | |
1677 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1678 | * is possible that the local path is no longer the "older" best path. | |
1679 | * It is a path that was never designated as best and hence requires | |
1680 | * additional handling to prevent bgp from injecting and holding on to a | |
1681 | * non-best local path. | |
1682 | */ | |
1683 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1684 | struct bgpevpn *vpn, | |
9bcb3eef | 1685 | struct bgp_dest *dest, |
9a8897aa | 1686 | struct bgp_path_info *local_pi) |
6d8c603a | 1687 | { |
6d8c603a | 1688 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1689 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1690 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1691 | dest); |
b54892e0 | 1692 | |
9c7edc03 | 1693 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1694 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1695 | |
1696 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1697 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1698 | } |
1699 | ||
70524092 AK |
1700 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
1701 | const struct prefix_evpn *p, | |
1702 | esi_t *esi) | |
1703 | { | |
1704 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
1705 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
1706 | || (is_evpn_prefix_ipaddr_v6(p) |
1707 | && !IN6_IS_ADDR_LINKLOCAL( | |
1708 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
1709 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
1710 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
1711 | } | |
1712 | ||
128ea8ab | 1713 | /* |
1714 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1715 | * and schedule for processing. | |
1716 | */ | |
d62a17ae | 1717 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1718 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1719 | uint32_t seq, esi_t *esi) |
128ea8ab | 1720 | { |
9bcb3eef | 1721 | struct bgp_dest *dest; |
d62a17ae | 1722 | struct attr attr; |
1723 | struct attr *attr_new; | |
1ec31309 | 1724 | int add_l3_ecomm = 0; |
40381db7 | 1725 | struct bgp_path_info *pi; |
d62a17ae | 1726 | afi_t afi = AFI_L2VPN; |
1727 | safi_t safi = SAFI_EVPN; | |
1728 | int route_change; | |
9c7edc03 | 1729 | bool old_is_sync = false; |
128ea8ab | 1730 | |
6006b807 | 1731 | memset(&attr, 0, sizeof(attr)); |
128ea8ab | 1732 | |
d62a17ae | 1733 | /* Build path-attribute for this route. */ |
0f05ea43 | 1734 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
d62a17ae | 1735 | attr.nexthop = vpn->originator_ip; |
1736 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1737 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1738 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1739 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1740 | attr.router_flag = CHECK_FLAG(flags, |
1741 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1742 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1743 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1744 | ||
1745 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1746 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1747 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1748 | } | |
1749 | ||
be41eb68 | 1750 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1751 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1752 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1753 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1754 | } |
be41eb68 | 1755 | |
9c7edc03 | 1756 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
1757 | char buf3[ESI_STR_LEN]; |
1758 | ||
23d0a753 | 1759 | zlog_debug( |
c0d72166 | 1760 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
1761 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1762 | : " ", | |
c0d72166 | 1763 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 1764 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 1765 | } |
1ec31309 | 1766 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1767 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1768 | uint8_t af_flags = 0; | |
1769 | ||
1770 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1771 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1772 | ||
1773 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1774 | } |
1775 | ||
a21bd7a3 | 1776 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1777 | |
1ec31309 | 1778 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1779 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1780 | * these routes. | |
1781 | */ | |
70524092 AK |
1782 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
1783 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 1784 | |
1785 | /* Set up extended community. */ | |
1786 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1787 | |
d62a17ae | 1788 | /* First, create (or fetch) route node within the VNI. */ |
1789 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1790 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1791 | |
d62a17ae | 1792 | /* Create or update route entry. */ |
9bcb3eef | 1793 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1794 | 1, &pi, flags, seq, |
1795 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1796 | assert(pi); |
1797 | attr_new = pi->attr; | |
128ea8ab | 1798 | |
6d8c603a AK |
1799 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1800 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1801 | |
1802 | /* Perform route selection. Normally, the local route in the | |
1803 | * VNI is expected to win and be the best route. However, if | |
1804 | * there is a race condition where a host moved from local to | |
1805 | * remote and the remote route was received in BGP just prior | |
1806 | * to the local MACIP notification from zebra, the remote | |
1807 | * route would win, and we should evict the defunct local route | |
1808 | * and (re)install the remote route into zebra. | |
1809 | */ | |
9bcb3eef | 1810 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1811 | /* |
9a8897aa AK |
1812 | * If the new local route was not selected evict it and tell zebra |
1813 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1814 | * routes. | |
6d8c603a | 1815 | */ |
9c7edc03 | 1816 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1817 | route_change = 0; |
9c7edc03 AK |
1818 | } else { |
1819 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1820 | route_change = 0; | |
1821 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1822 | } else { | |
1823 | bool new_is_sync; | |
1824 | ||
1825 | /* If the local path already existed and is still the | |
1826 | * best path we need to also check if it transitioned | |
1827 | * from being a sync path to a non-sync path. If it | |
1828 | * it did we need to notify zebra that the sync-path | |
1829 | * has been removed. | |
1830 | */ | |
1831 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1832 | if (!new_is_sync && old_is_sync) | |
1833 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1834 | } | |
9a8897aa | 1835 | } |
6d8c603a AK |
1836 | bgp_path_info_unlock(pi); |
1837 | ||
9bcb3eef | 1838 | bgp_dest_unlock_node(dest); |
128ea8ab | 1839 | |
d62a17ae | 1840 | /* If this is a new route or some attribute has changed, export the |
1841 | * route to the global table. The route will be advertised to peers | |
1842 | * from there. Note that this table is a 2-level tree (RD-level + | |
1843 | * Prefix-level) similar to L3VPN routes. | |
1844 | */ | |
1845 | if (route_change) { | |
40381db7 | 1846 | struct bgp_path_info *global_pi; |
128ea8ab | 1847 | |
c44ab6f1 AK |
1848 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1849 | (const struct prefix_evpn *)p, | |
1850 | &vpn->prd); | |
9bcb3eef | 1851 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1852 | &global_pi, flags, seq, |
1853 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1854 | |
d62a17ae | 1855 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1856 | bgp_process(bgp, dest, afi, safi); |
1857 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1858 | } |
128ea8ab | 1859 | |
d62a17ae | 1860 | /* Unintern temporary. */ |
1861 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1862 | |
d62a17ae | 1863 | return 0; |
128ea8ab | 1864 | } |
1865 | ||
50f74cf1 | 1866 | /* |
1867 | * Delete EVPN route entry. | |
1868 | * The entry can be in ESI/VNI table or the global table. | |
1869 | */ | |
185fb14a | 1870 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1871 | struct bgp_dest *dest, |
40381db7 | 1872 | struct bgp_path_info **pi) |
342dd0c6 | 1873 | { |
40381db7 | 1874 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1875 | |
40381db7 | 1876 | *pi = NULL; |
342dd0c6 | 1877 | |
50f74cf1 | 1878 | /* Now, find matching route. */ |
9bcb3eef | 1879 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1880 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1881 | if (tmp_pi->peer == bgp->peer_self |
1882 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1883 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1884 | break; |
1885 | ||
40381db7 | 1886 | *pi = tmp_pi; |
342dd0c6 | 1887 | |
1888 | /* Mark route for delete. */ | |
40381db7 | 1889 | if (tmp_pi) |
9bcb3eef | 1890 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1891 | } |
1892 | ||
1893 | /* Delete EVPN type5 route */ | |
996c9314 | 1894 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1895 | { |
1896 | afi_t afi = AFI_L2VPN; | |
1897 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1898 | struct bgp_dest *dest = NULL; |
40381db7 | 1899 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1900 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1901 | |
5e53dce3 T |
1902 | bgp_evpn = bgp_get_evpn(); |
1903 | if (!bgp_evpn) | |
faafdfa8 | 1904 | return 0; |
342dd0c6 | 1905 | |
1906 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1907 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1908 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1909 | if (!dest) |
342dd0c6 | 1910 | return 0; |
1911 | ||
9bcb3eef | 1912 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1913 | if (pi) |
9bcb3eef DS |
1914 | bgp_process(bgp_evpn, dest, afi, safi); |
1915 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1916 | return 0; |
1917 | } | |
1918 | ||
128ea8ab | 1919 | /* |
1920 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1921 | * schedule for processing. | |
1922 | */ | |
d62a17ae | 1923 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1924 | struct prefix_evpn *p) | |
1925 | { | |
9bcb3eef | 1926 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1927 | struct bgp_path_info *pi; |
d62a17ae | 1928 | afi_t afi = AFI_L2VPN; |
1929 | safi_t safi = SAFI_EVPN; | |
1930 | ||
1931 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1932 | * there | |
1933 | * is nothing further to do. | |
1934 | */ | |
1935 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1936 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1937 | if (!dest) | |
d62a17ae | 1938 | return 0; |
1939 | ||
1940 | /* Next, locate route node in the global EVPN routing table. Note that | |
1941 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1942 | * L3VPN routes. | |
1943 | */ | |
c44ab6f1 AK |
1944 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1945 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1946 | if (global_dest) { |
d62a17ae | 1947 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1948 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1949 | |
1950 | /* Schedule for processing - withdraws to peers happen from | |
1951 | * this table. | |
1952 | */ | |
40381db7 | 1953 | if (pi) |
9bcb3eef DS |
1954 | bgp_process(bgp, global_dest, afi, safi); |
1955 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1956 | } |
1957 | ||
1958 | /* Delete route entry in the VNI route table. This can just be removed. | |
1959 | */ | |
9bcb3eef | 1960 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1961 | if (pi) { |
9bcb3eef DS |
1962 | bgp_path_info_reap(dest, pi); |
1963 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1964 | } |
9bcb3eef | 1965 | bgp_dest_unlock_node(dest); |
d62a17ae | 1966 | |
1967 | return 0; | |
128ea8ab | 1968 | } |
1969 | ||
70524092 AK |
1970 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1971 | struct bgp_dest *dest, | |
1972 | struct bgp_path_info *local_pi, | |
1973 | const char *caller) | |
9c7edc03 AK |
1974 | { |
1975 | afi_t afi = AFI_L2VPN; | |
1976 | safi_t safi = SAFI_EVPN; | |
1977 | struct bgp_path_info *pi; | |
1978 | struct attr attr; | |
1979 | struct attr *attr_new; | |
1980 | uint32_t seq; | |
1981 | int add_l3_ecomm = 0; | |
09319b4e | 1982 | struct bgp_dest *global_dest; |
9c7edc03 | 1983 | struct bgp_path_info *global_pi; |
752eed47 DS |
1984 | struct prefix_evpn *evp = |
1985 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1986 | int route_change; |
1987 | bool old_is_sync = false; | |
1988 | ||
1989 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1990 | return; | |
1991 | ||
1992 | /* | |
1993 | * Build attribute per local route as the MAC mobility and | |
1994 | * some other values could differ for different routes. The | |
1995 | * attributes will be shared in the hash table. | |
1996 | */ | |
0f05ea43 | 1997 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
9c7edc03 AK |
1998 | attr.nexthop = vpn->originator_ip; |
1999 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2000 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2001 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2002 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2003 | attr.es_flags = local_pi->attr->es_flags; | |
2004 | if (local_pi->attr->default_gw) { | |
2005 | attr.default_gw = 1; | |
2006 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2007 | attr.router_flag = 1; | |
2008 | } | |
2009 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
2010 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
2011 | local_pi->extra->af_flags); | |
2012 | vni2label(vpn->vni, &(attr.label)); | |
2013 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2014 | * using L3 VNI for type-2 routes also. | |
2015 | */ | |
70524092 AK |
2016 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2017 | vpn, evp, | |
2018 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
9c7edc03 AK |
2019 | |
2020 | /* Set up extended community. */ | |
2021 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2022 | seq = mac_mobility_seqnum(local_pi->attr); | |
2023 | ||
2024 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2025 | char buf3[ESI_STR_LEN]; |
2026 | ||
23d0a753 | 2027 | zlog_debug( |
c0d72166 | 2028 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2029 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2030 | : " ", | |
c0d72166 | 2031 | vpn->vni, evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2032 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2033 | attr.es_flags, caller); | |
9c7edc03 AK |
2034 | } |
2035 | ||
2036 | /* Update the route entry. */ | |
09319b4e DS |
2037 | route_change = update_evpn_route_entry( |
2038 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2039 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2040 | |
2041 | assert(pi); | |
2042 | attr_new = pi->attr; | |
2043 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2044 | bgp_path_info_lock(pi); | |
2045 | ||
2046 | /* Perform route selection. Normally, the local route in the | |
2047 | * VNI is expected to win and be the best route. However, | |
2048 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2049 | * that causes best selection to be based on next hop), a | |
2050 | * remote route could win. If the local route is the best, | |
2051 | * ensure it is updated in the global EVPN route table and | |
2052 | * advertised to peers; otherwise, ensure it is evicted and | |
2053 | * (re)install the remote route into zebra. | |
2054 | */ | |
09319b4e | 2055 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2056 | |
2057 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2058 | route_change = 0; | |
2059 | } else { | |
2060 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2061 | route_change = 0; | |
09319b4e | 2062 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2063 | } else { |
2064 | bool new_is_sync; | |
2065 | ||
2066 | /* If the local path already existed and is still the | |
2067 | * best path we need to also check if it transitioned | |
2068 | * from being a sync path to a non-sync path. If it | |
2069 | * it did we need to notify zebra that the sync-path | |
2070 | * has been removed. | |
2071 | */ | |
2072 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2073 | if (!new_is_sync && old_is_sync) | |
2074 | evpn_zebra_uninstall(bgp, vpn, | |
2075 | evp, zero_vtep_ip); | |
2076 | } | |
2077 | } | |
2078 | ||
2079 | ||
2080 | /* unlock pi */ | |
2081 | bgp_path_info_unlock(pi); | |
2082 | ||
2083 | if (route_change) { | |
2084 | /* Update route in global routing table. */ | |
09319b4e DS |
2085 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2086 | safi, evp, &vpn->prd); | |
2087 | assert(global_dest); | |
2088 | update_evpn_route_entry( | |
2089 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2090 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2091 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2092 | |
2093 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2094 | bgp_process(bgp, global_dest, afi, safi); |
2095 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2096 | } |
2097 | ||
2098 | /* Unintern temporary. */ | |
2099 | aspath_unintern(&attr.aspath); | |
2100 | } | |
2101 | ||
128ea8ab | 2102 | /* |
2103 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2104 | * be scheduled for advertise to peers. | |
2105 | */ | |
d62a17ae | 2106 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2107 | { | |
9bcb3eef | 2108 | struct bgp_dest *dest; |
9c7edc03 | 2109 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2110 | |
2111 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2112 | * routes updated, update corresponding entry in the global table too. | |
2113 | */ | |
9bcb3eef | 2114 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2115 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2116 | const struct prefix_evpn *evp = |
2117 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2118 | |
2119 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2120 | continue; | |
2121 | ||
f07e1c99 | 2122 | /* Identify local route. */ |
9bcb3eef | 2123 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2124 | tmp_pi = tmp_pi->next) { |
40381db7 | 2125 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2126 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2127 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2128 | break; |
7ec156a9 | 2129 | } |
d62a17ae | 2130 | |
40381db7 | 2131 | if (!tmp_pi) |
d62a17ae | 2132 | continue; |
2133 | ||
9c7edc03 AK |
2134 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2135 | __func__); | |
f07e1c99 | 2136 | } |
d62a17ae | 2137 | |
2138 | return 0; | |
128ea8ab | 2139 | } |
2140 | ||
2141 | /* | |
2142 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2143 | * global routing table. These are also scheduled for withdraw from peers. | |
2144 | */ | |
17151ae9 | 2145 | static void delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2146 | { |
d62a17ae | 2147 | afi_t afi; |
2148 | safi_t safi; | |
9bcb3eef | 2149 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2150 | struct bgp_table *table; |
40381db7 | 2151 | struct bgp_path_info *pi; |
128ea8ab | 2152 | |
d62a17ae | 2153 | afi = AFI_L2VPN; |
2154 | safi = SAFI_EVPN; | |
128ea8ab | 2155 | |
9bcb3eef DS |
2156 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2157 | (struct prefix *)&vpn->prd); | |
17151ae9 | 2158 | if (rddest) { |
9bcb3eef DS |
2159 | table = bgp_dest_get_bgp_table_info(rddest); |
2160 | for (dest = bgp_table_top(table); dest; | |
2161 | dest = bgp_route_next(dest)) { | |
2162 | const struct prefix_evpn *evp = | |
2163 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2164 | dest); | |
128ea8ab | 2165 | |
d62a17ae | 2166 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2167 | continue; | |
128ea8ab | 2168 | |
9bcb3eef | 2169 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2170 | if (pi) |
9bcb3eef | 2171 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2172 | } |
128ea8ab | 2173 | |
17151ae9 | 2174 | /* Unlock RD node. */ |
9bcb3eef | 2175 | bgp_dest_unlock_node(rddest); |
17151ae9 | 2176 | } |
128ea8ab | 2177 | } |
2178 | ||
2179 | /* | |
2180 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2181 | * table as well as the per-VNI route table. | |
2182 | */ | |
d62a17ae | 2183 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2184 | { |
d62a17ae | 2185 | afi_t afi; |
2186 | safi_t safi; | |
9bcb3eef | 2187 | struct bgp_dest *dest; |
40381db7 | 2188 | struct bgp_path_info *pi; |
128ea8ab | 2189 | |
d62a17ae | 2190 | afi = AFI_L2VPN; |
2191 | safi = SAFI_EVPN; | |
128ea8ab | 2192 | |
d62a17ae | 2193 | /* First, walk the global route table for this VNI's type-2 local |
2194 | * routes. | |
2195 | * EVPN routes are a 2-level table, first get the RD table. | |
2196 | */ | |
2197 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2198 | |
d62a17ae | 2199 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2200 | for (dest = bgp_table_top(vpn->route_table); dest; |
2201 | dest = bgp_route_next(dest)) { | |
2202 | const struct prefix_evpn *evp = | |
2203 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2204 | |
d62a17ae | 2205 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2206 | continue; | |
128ea8ab | 2207 | |
9bcb3eef | 2208 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2209 | |
d62a17ae | 2210 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2211 | if (pi) |
9bcb3eef | 2212 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2213 | } |
128ea8ab | 2214 | |
d62a17ae | 2215 | return 0; |
128ea8ab | 2216 | } |
2217 | ||
2218 | /* | |
2219 | * Delete all routes in the per-VNI route table. | |
2220 | */ | |
d62a17ae | 2221 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2222 | { |
9bcb3eef | 2223 | struct bgp_dest *dest; |
40381db7 | 2224 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2225 | |
d62a17ae | 2226 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2227 | for (dest = bgp_table_top(vpn->route_table); dest; |
2228 | dest = bgp_route_next(dest)) { | |
2229 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2230 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2231 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2232 | bgp_path_info_delete(dest, pi); |
2233 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2234 | } |
2235 | } | |
128ea8ab | 2236 | |
d62a17ae | 2237 | return 0; |
128ea8ab | 2238 | } |
2239 | ||
833b8a50 AK |
2240 | /* BUM traffic flood mode per-l2-vni */ |
2241 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2242 | struct bgpevpn *vpn) | |
2243 | { | |
2244 | /* if flooding has been globally disabled per-vni mode is | |
2245 | * not relevant | |
2246 | */ | |
2247 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2248 | return VXLAN_FLOOD_DISABLED; | |
2249 | ||
2250 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2251 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2252 | return VXLAN_FLOOD_PIM_SM; | |
2253 | ||
2254 | /* default is ingress replication */ | |
2255 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2256 | } | |
2257 | ||
128ea8ab | 2258 | /* |
2259 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2260 | * export RT getting modified or change to tunnel IP. Note that these | |
2261 | * situations need the route in the per-VNI table as well as the global | |
2262 | * table to be updated (as attributes change). | |
2263 | */ | |
0ca10580 | 2264 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2265 | { |
d62a17ae | 2266 | int ret; |
2267 | struct prefix_evpn p; | |
128ea8ab | 2268 | |
9c49ac74 AD |
2269 | update_type1_routes_for_evi(bgp, vpn); |
2270 | ||
d62a17ae | 2271 | /* Update and advertise the type-3 route (only one) followed by the |
2272 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2273 | * |
2274 | * RT-3 only if doing head-end replication | |
d62a17ae | 2275 | */ |
833b8a50 AK |
2276 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2277 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2278 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2279 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2280 | if (ret) |
2281 | return ret; | |
2282 | } | |
128ea8ab | 2283 | |
d62a17ae | 2284 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2285 | } |
2286 | ||
2287 | /* | |
2288 | * Delete (and withdraw) local routes for specified VNI from the global | |
2289 | * table and per-VNI table. After this, remove all other routes from | |
2290 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2291 | * (advertise-all-vni) being disabled. | |
2292 | */ | |
d62a17ae | 2293 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2294 | { |
d62a17ae | 2295 | int ret; |
2296 | struct prefix_evpn p; | |
128ea8ab | 2297 | |
d62a17ae | 2298 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2299 | * followed by type-3 routes (only one) - for this VNI. | |
2300 | */ | |
2301 | ret = delete_all_type2_routes(bgp, vpn); | |
2302 | if (ret) | |
2303 | return ret; | |
128ea8ab | 2304 | |
d62a17ae | 2305 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2306 | ret = delete_evpn_route(bgp, vpn, &p); | |
2307 | if (ret) | |
2308 | return ret; | |
128ea8ab | 2309 | |
d62a17ae | 2310 | /* Delete all routes from the per-VNI table. */ |
2311 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2312 | } |
2313 | ||
76d07c7a AK |
2314 | /* |
2315 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2316 | * remove the type-3 route if any. A new type-3 route will be generated | |
2317 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2318 | */ | |
2319 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2320 | struct in_addr mcast_grp) | |
2321 | { | |
2322 | struct prefix_evpn p; | |
2323 | ||
2324 | vpn->mcast_grp = mcast_grp; | |
2325 | ||
2326 | if (is_vni_live(vpn)) { | |
2327 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2328 | delete_evpn_route(bgp, vpn, &p); | |
2329 | } | |
2330 | ||
2331 | return 0; | |
2332 | } | |
2333 | ||
128ea8ab | 2334 | /* |
d1911c26 | 2335 | * There is a tunnel endpoint IP address change for this VNI, delete |
2336 | * prior type-3 route (if needed) and update. | |
2337 | * Note: Route re-advertisement happens elsewhere after other processing | |
2338 | * other changes. | |
128ea8ab | 2339 | */ |
d62a17ae | 2340 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2341 | struct in_addr originator_ip) | |
128ea8ab | 2342 | { |
d62a17ae | 2343 | struct prefix_evpn p; |
128ea8ab | 2344 | |
ddd16ed5 MK |
2345 | /* If VNI is not live, we only need to update the originator ip */ |
2346 | if (!is_vni_live(vpn)) { | |
2347 | vpn->originator_ip = originator_ip; | |
2348 | return 0; | |
2349 | } | |
2350 | ||
db0e1937 MK |
2351 | /* Update the tunnel-ip hash */ |
2352 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2353 | bgp_tip_add(bgp, &originator_ip); | |
2354 | ||
2355 | /* filter routes as martian nexthop db has changed */ | |
2356 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2357 | ||
d62a17ae | 2358 | /* Need to withdraw type-3 route as the originator IP is part |
2359 | * of the key. | |
2360 | */ | |
2361 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2362 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2363 | |
d62a17ae | 2364 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2365 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2366 | return 0; |
185fb14a | 2367 | } |
50f74cf1 | 2368 | |
185fb14a AK |
2369 | static struct bgp_path_info * |
2370 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2371 | struct bgp_dest *dest, struct attr *attr) | |
2372 | { | |
2373 | struct attr *attr_new; | |
2374 | struct bgp_path_info *pi; | |
50f74cf1 | 2375 | |
185fb14a AK |
2376 | /* Add (or update) attribute to hash. */ |
2377 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2378 | |
185fb14a AK |
2379 | /* Create new route with its attribute. */ |
2380 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2381 | attr_new, dest); | |
2382 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2383 | bgp_path_info_extra_get(pi); | |
2384 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2385 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2386 | if (parent_pi->extra) { | |
2387 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2388 | sizeof(pi->extra->label)); | |
2389 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2390 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2391 | } |
185fb14a | 2392 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2393 | |
185fb14a | 2394 | return pi; |
50f74cf1 | 2395 | } |
2396 | ||
d3135ba3 | 2397 | /* |
2398 | * Install route entry into the VRF routing table and invoke route selection. | |
2399 | */ | |
2400 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2401 | const struct prefix_evpn *evp, |
40381db7 | 2402 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2403 | { |
9bcb3eef | 2404 | struct bgp_dest *dest; |
40381db7 | 2405 | struct bgp_path_info *pi; |
1ec31309 | 2406 | struct attr attr; |
d3135ba3 | 2407 | struct attr *attr_new; |
c4edf708 | 2408 | int ret = 0; |
d3135ba3 | 2409 | struct prefix p; |
2410 | struct prefix *pp = &p; | |
2411 | afi_t afi = 0; | |
2412 | safi_t safi = 0; | |
5f0c5ec8 | 2413 | bool new_pi = false; |
58bff4d1 AK |
2414 | bool use_l3nhg = false; |
2415 | bool is_l3nhg_active = false; | |
a2299aba | 2416 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2417 | |
2418 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2419 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2420 | |
2dbe669b | 2421 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2422 | zlog_debug( |
2dbe669b DA |
2423 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2424 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2425 | parent_pi->flags); | |
1eb88002 | 2426 | |
d3135ba3 | 2427 | /* Create (or fetch) route within the VRF. */ |
2428 | /* NOTE: There is no RD here. */ | |
3714a385 | 2429 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2430 | afi = AFI_IP; |
2431 | safi = SAFI_UNICAST; | |
9bcb3eef | 2432 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2433 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2434 | afi = AFI_IP6; |
2435 | safi = SAFI_UNICAST; | |
9bcb3eef | 2436 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2437 | } else |
2438 | return 0; | |
2439 | ||
1ec31309 | 2440 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2441 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2442 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2443 | * address for the rest of the code to flow through. In the case of IPv4, | |
2444 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2445 | */ |
6f4f49b2 | 2446 | attr = *parent_pi->attr; |
a2299aba AD |
2447 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2448 | if (afi == AFI_IP6) | |
2449 | evpn_convert_nexthop_to_ipv6(&attr); | |
2450 | else | |
2451 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
2452 | } else { | |
2453 | ||
2454 | /* | |
2455 | * If gateway IP overlay index is specified in the NLRI of | |
2456 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2457 | * for the prefix in the VRF | |
2458 | */ | |
2459 | if (bgp_debug_zebra(NULL)) { | |
2460 | zlog_debug( | |
2461 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2462 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2463 | buf1, sizeof(buf1)), pp, | |
2464 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2465 | } | |
2466 | ||
2467 | if (afi == AFI_IP6) { | |
2468 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2469 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2470 | sizeof(struct in6_addr)); |
2471 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2472 | } else { | |
860e740b | 2473 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2474 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2475 | } | |
2476 | } | |
1ec31309 | 2477 | |
58bff4d1 AK |
2478 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2479 | &is_l3nhg_active, NULL); | |
2480 | if (use_l3nhg) | |
2481 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2482 | if (is_l3nhg_active) | |
2483 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2484 | ||
d3135ba3 | 2485 | /* Check if route entry is already present. */ |
9bcb3eef | 2486 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2487 | if (pi->extra |
2488 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2489 | break; |
2490 | ||
5f0c5ec8 | 2491 | if (!pi) { |
9bcb3eef | 2492 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2493 | new_pi = true; |
2494 | } else { | |
40381db7 DS |
2495 | if (attrhash_cmp(pi->attr, &attr) |
2496 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2497 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2498 | return 0; |
2499 | } | |
2500 | /* The attribute has changed. */ | |
2501 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2502 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2503 | |
2504 | /* Restore route, if needed. */ | |
40381db7 | 2505 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2506 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2507 | |
2508 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2509 | if ((afi == AFI_IP |
2510 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2511 | || (afi == AFI_IP6 | |
2512 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2513 | &attr_new->mp_nexthop_global))) | |
2514 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2515 | |
9bcb3eef | 2516 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2517 | /* Unintern existing, set to new. */ |
40381db7 DS |
2518 | bgp_attr_unintern(&pi->attr); |
2519 | pi->attr = attr_new; | |
2520 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2521 | } |
a2299aba AD |
2522 | |
2523 | /* Gateway IP nexthop should be resolved */ | |
2524 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2525 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2526 | NULL, 0, NULL)) |
a2299aba AD |
2527 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2528 | else { | |
2529 | if (BGP_DEBUG(nht, NHT)) { | |
2530 | inet_ntop(pp->family, | |
2531 | &attr.evpn_overlay.gw_ip, | |
2532 | buf1, sizeof(buf1)); | |
2533 | zlog_debug("%s: gateway IP NH unresolved", | |
2534 | buf1); | |
2535 | } | |
2536 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2537 | } | |
2538 | } else { | |
2539 | ||
2540 | /* as it is an importation, change nexthop */ | |
2541 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2542 | } | |
d3135ba3 | 2543 | |
090efa2f AK |
2544 | /* Link path to evpn nexthop */ |
2545 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2546 | ||
9bcb3eef | 2547 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2548 | safi); |
b49cdf4c | 2549 | |
d3135ba3 | 2550 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2551 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2552 | |
7452e879 | 2553 | /* Process for route leaking. */ |
2554 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2555 | ||
9bcb3eef | 2556 | bgp_dest_unlock_node(dest); |
3c11d70a | 2557 | |
5f0c5ec8 | 2558 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2559 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2560 | new_pi ? "new" : "update", dest, | |
2561 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2562 | pi->flags); | |
5f0c5ec8 | 2563 | |
d3135ba3 | 2564 | return ret; |
2565 | } | |
2566 | ||
128ea8ab | 2567 | /* |
2568 | * Install route entry into the VNI routing table and invoke route selection. | |
2569 | */ | |
d62a17ae | 2570 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2571 | const struct prefix_evpn *p, |
40381db7 | 2572 | struct bgp_path_info *parent_pi) |
d62a17ae | 2573 | { |
9bcb3eef | 2574 | struct bgp_dest *dest; |
40381db7 | 2575 | struct bgp_path_info *pi; |
9c7edc03 | 2576 | struct bgp_path_info *local_pi; |
d62a17ae | 2577 | struct attr *attr_new; |
2578 | int ret; | |
c44ab6f1 | 2579 | struct prefix_evpn ad_evp; |
74efb822 AK |
2580 | bool old_local_es = false; |
2581 | bool new_local_es; | |
c44ab6f1 AK |
2582 | |
2583 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2584 | * we need to create a different copy for the VNI | |
2585 | */ | |
2586 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2587 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2588 | parent_pi->attr->nexthop); | |
d62a17ae | 2589 | |
2590 | /* Create (or fetch) route within the VNI. */ | |
2591 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2592 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2593 | |
2594 | /* Check if route entry is already present. */ | |
9bcb3eef | 2595 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2596 | if (pi->extra |
2597 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2598 | break; |
2599 | ||
bd0254af MS |
2600 | if (!pi) { |
2601 | /* Create an info */ | |
26c03e43 | 2602 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2603 | parent_pi->attr); |
74efb822 | 2604 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2605 | } else { |
40381db7 DS |
2606 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2607 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2608 | bgp_dest_unlock_node(dest); |
d62a17ae | 2609 | return 0; |
2610 | } | |
2611 | /* The attribute has changed. */ | |
2612 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2613 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2614 | |
50f74cf1 | 2615 | /* Restore route, if needed. */ |
40381db7 | 2616 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2617 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2618 | |
2619 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2620 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2621 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2622 | |
74efb822 AK |
2623 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
2624 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
2625 | /* If ESI is different or if its type has changed we | |
2626 | * need to reinstall the path in zebra | |
2627 | */ | |
2628 | if ((old_local_es != new_local_es) | |
2629 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
2630 | sizeof(attr_new->esi))) { | |
2631 | ||
2632 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2633 | zlog_debug("VNI %d path %pFX chg to %s es", | |
2634 | vpn->vni, &pi->net->p, | |
2635 | new_local_es ? "local" | |
2636 | : "non-local"); | |
2637 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
2638 | } | |
2639 | ||
50f74cf1 | 2640 | /* Unintern existing, set to new. */ |
40381db7 DS |
2641 | bgp_attr_unintern(&pi->attr); |
2642 | pi->attr = attr_new; | |
2643 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2644 | } |
2645 | ||
021b6596 AD |
2646 | /* Add this route to remote IP hashtable */ |
2647 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
2648 | ||
50f74cf1 | 2649 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2650 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2651 | |
9c7edc03 AK |
2652 | /* if the best path is a local path with a non-zero ES |
2653 | * sync info against the local path may need to be updated | |
2654 | * when a remote path is added/updated (including changes | |
2655 | * from sync-path to remote-path) | |
2656 | */ | |
2657 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 2658 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 2659 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 2660 | __func__); |
9bcb3eef | 2661 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2662 | |
50f74cf1 | 2663 | return ret; |
2664 | } | |
2665 | ||
d3135ba3 | 2666 | /* |
2667 | * Uninstall route entry from the VRF routing table and send message | |
2668 | * to zebra, if appropriate. | |
2669 | */ | |
2670 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2671 | const struct prefix_evpn *evp, |
40381db7 | 2672 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2673 | { |
9bcb3eef | 2674 | struct bgp_dest *dest; |
40381db7 | 2675 | struct bgp_path_info *pi; |
c4edf708 | 2676 | int ret = 0; |
d3135ba3 | 2677 | struct prefix p; |
2678 | struct prefix *pp = &p; | |
2679 | afi_t afi = 0; | |
2680 | safi_t safi = 0; | |
2681 | ||
2682 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2683 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2684 | |
2dbe669b | 2685 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2686 | zlog_debug( |
2dbe669b DA |
2687 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2688 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2689 | parent_pi->flags); | |
1eb88002 | 2690 | |
d3135ba3 | 2691 | /* Locate route within the VRF. */ |
2692 | /* NOTE: There is no RD here. */ | |
3714a385 | 2693 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2694 | afi = AFI_IP; |
2695 | safi = SAFI_UNICAST; | |
9bcb3eef | 2696 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2697 | } else { |
2698 | afi = AFI_IP6; | |
2699 | safi = SAFI_UNICAST; | |
9bcb3eef | 2700 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2701 | } |
2702 | ||
9bcb3eef | 2703 | if (!dest) |
d3135ba3 | 2704 | return 0; |
2705 | ||
2706 | /* Find matching route entry. */ | |
9bcb3eef | 2707 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2708 | if (pi->extra |
2709 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2710 | break; |
2711 | ||
e71ad4b6 DA |
2712 | if (!pi) { |
2713 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 2714 | return 0; |
e71ad4b6 | 2715 | } |
d3135ba3 | 2716 | |
5f0c5ec8 | 2717 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2718 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2719 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2720 | pi->flags); | |
5f0c5ec8 | 2721 | |
7452e879 | 2722 | /* Process for route leaking. */ |
2723 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2724 | ||
9bcb3eef | 2725 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2726 | safi); |
4c7a11d5 | 2727 | |
d3135ba3 | 2728 | /* Mark entry for deletion */ |
9bcb3eef | 2729 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2730 | |
090efa2f AK |
2731 | /* Unlink path to evpn nexthop */ |
2732 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
2733 | ||
d3135ba3 | 2734 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2735 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2736 | |
2737 | /* Unlock route node. */ | |
9bcb3eef | 2738 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2739 | |
2740 | return ret; | |
2741 | } | |
2742 | ||
128ea8ab | 2743 | /* |
2744 | * Uninstall route entry from the VNI routing table and send message | |
2745 | * to zebra, if appropriate. | |
2746 | */ | |
d62a17ae | 2747 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2748 | const struct prefix_evpn *p, |
40381db7 | 2749 | struct bgp_path_info *parent_pi) |
128ea8ab | 2750 | { |
9bcb3eef | 2751 | struct bgp_dest *dest; |
40381db7 | 2752 | struct bgp_path_info *pi; |
9c7edc03 | 2753 | struct bgp_path_info *local_pi; |
d62a17ae | 2754 | int ret; |
c44ab6f1 AK |
2755 | struct prefix_evpn ad_evp; |
2756 | ||
2757 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2758 | * we need to create a different copy for the VNI | |
2759 | */ | |
2760 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2761 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2762 | parent_pi->attr->nexthop); | |
128ea8ab | 2763 | |
d62a17ae | 2764 | /* Locate route within the VNI. */ |
2765 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2766 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2767 | if (!dest) | |
d62a17ae | 2768 | return 0; |
128ea8ab | 2769 | |
d62a17ae | 2770 | /* Find matching route entry. */ |
9bcb3eef | 2771 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2772 | if (pi->extra |
2773 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2774 | break; |
128ea8ab | 2775 | |
e71ad4b6 DA |
2776 | if (!pi) { |
2777 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2778 | return 0; |
e71ad4b6 | 2779 | } |
128ea8ab | 2780 | |
021b6596 AD |
2781 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
2782 | ||
d62a17ae | 2783 | /* Mark entry for deletion */ |
9bcb3eef | 2784 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2785 | |
d62a17ae | 2786 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2787 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2788 | |
9c7edc03 AK |
2789 | /* if the best path is a local path with a non-zero ES |
2790 | * sync info against the local path may need to be updated | |
2791 | * when a remote path is deleted | |
2792 | */ | |
2793 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2794 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2795 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2796 | __func__); | |
2797 | ||
d62a17ae | 2798 | /* Unlock route node. */ |
9bcb3eef | 2799 | bgp_dest_unlock_node(dest); |
128ea8ab | 2800 | |
d62a17ae | 2801 | return ret; |
128ea8ab | 2802 | } |
2803 | ||
5ba238b7 MK |
2804 | /* |
2805 | * Given a route entry and a VRF, see if this route entry should be | |
2806 | * imported into the VRF i.e., RTs match. | |
2807 | */ | |
4b7e6066 | 2808 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2809 | struct bgp_path_info *pi) |
5ba238b7 | 2810 | { |
40381db7 | 2811 | struct attr *attr = pi->attr; |
5ba238b7 | 2812 | struct ecommunity *ecom; |
f6e07e1b | 2813 | uint32_t i; |
5ba238b7 MK |
2814 | |
2815 | assert(attr); | |
2816 | /* Route should have valid RT to be even considered. */ | |
2817 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2818 | return 0; | |
2819 | ||
b53e67a3 | 2820 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
2821 | if (!ecom || !ecom->size) |
2822 | return 0; | |
2823 | ||
2824 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2825 | * matches, we're done. | |
2826 | */ | |
2827 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2828 | uint8_t *pnt; |
2829 | uint8_t type, sub_type; | |
5ba238b7 MK |
2830 | struct ecommunity_val *eval; |
2831 | struct ecommunity_val eval_tmp; | |
2832 | struct vrf_irt_node *irt; | |
2833 | ||
2834 | /* Only deal with RTs */ | |
34540b0d | 2835 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2836 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2837 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2838 | type = *pnt++; |
2839 | sub_type = *pnt++; | |
2840 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2841 | continue; | |
2842 | ||
2843 | /* See if this RT matches specified VNIs import RTs */ | |
2844 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2845 | if (irt) |
5ba238b7 MK |
2846 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2847 | return 1; | |
2848 | ||
2849 | /* Also check for non-exact match. In this, we mask out the AS | |
2850 | * and | |
2851 | * only check on the local-admin sub-field. This is to | |
2852 | * facilitate using | |
2853 | * VNI as the RT for EBGP peering too. | |
2854 | */ | |
2855 | irt = NULL; | |
2856 | if (type == ECOMMUNITY_ENCODE_AS | |
2857 | || type == ECOMMUNITY_ENCODE_AS4 | |
2858 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2859 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2860 | mask_ecom_global_admin(&eval_tmp, eval); |
2861 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2862 | } | |
5d9cbca2 | 2863 | if (irt) |
5ba238b7 MK |
2864 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2865 | return 1; | |
2866 | } | |
2867 | ||
2868 | return 0; | |
2869 | } | |
2870 | ||
128ea8ab | 2871 | /* |
2872 | * Given a route entry and a VNI, see if this route entry should be | |
2873 | * imported into the VNI i.e., RTs match. | |
2874 | */ | |
d62a17ae | 2875 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2876 | struct bgp_path_info *pi) |
d62a17ae | 2877 | { |
40381db7 | 2878 | struct attr *attr = pi->attr; |
d62a17ae | 2879 | struct ecommunity *ecom; |
f6e07e1b | 2880 | uint32_t i; |
d62a17ae | 2881 | |
2882 | assert(attr); | |
2883 | /* Route should have valid RT to be even considered. */ | |
2884 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2885 | return 0; | |
2886 | ||
b53e67a3 | 2887 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 2888 | if (!ecom || !ecom->size) |
2889 | return 0; | |
2890 | ||
2891 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2892 | * matches, we're done. | |
2893 | */ | |
2894 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2895 | uint8_t *pnt; |
2896 | uint8_t type, sub_type; | |
d62a17ae | 2897 | struct ecommunity_val *eval; |
2898 | struct ecommunity_val eval_tmp; | |
2899 | struct irt_node *irt; | |
2900 | ||
2901 | /* Only deal with RTs */ | |
34540b0d | 2902 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2903 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2904 | + (i * ecom->unit_size)); |
d62a17ae | 2905 | type = *pnt++; |
2906 | sub_type = *pnt++; | |
2907 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2908 | continue; | |
2909 | ||
2910 | /* See if this RT matches specified VNIs import RTs */ | |
2911 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2912 | if (irt) |
d62a17ae | 2913 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2914 | return 1; | |
2915 | ||
2916 | /* Also check for non-exact match. In this, we mask out the AS | |
2917 | * and | |
2918 | * only check on the local-admin sub-field. This is to | |
2919 | * facilitate using | |
2920 | * VNI as the RT for EBGP peering too. | |
2921 | */ | |
2922 | irt = NULL; | |
2923 | if (type == ECOMMUNITY_ENCODE_AS | |
2924 | || type == ECOMMUNITY_ENCODE_AS4 | |
2925 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2926 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2927 | mask_ecom_global_admin(&eval_tmp, eval); |
2928 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2929 | } | |
b1ab0dfe | 2930 | if (irt) |
d62a17ae | 2931 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2932 | return 1; | |
2933 | } | |
2934 | ||
2935 | return 0; | |
128ea8ab | 2936 | } |
2937 | ||
47bf0432 CS |
2938 | /* This API will scan evpn routes for checking attribute's rmac |
2939 | * macthes with bgp instance router mac. It avoid installing | |
2940 | * route into bgp vrf table and remote rmac in bridge table. | |
2941 | */ | |
2942 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2943 | const struct prefix_evpn *evp, |
47bf0432 CS |
2944 | struct bgp_path_info *pi) |
2945 | { | |
2946 | /* evpn route could have learnt prior to L3vni has come up, | |
2947 | * perform rmac check before installing route and | |
2948 | * remote router mac. | |
2949 | * The route will be removed from global bgp table once | |
2950 | * SVI comes up with MAC and stored in hash, triggers | |
2951 | * bgp_mac_rescan_all_evpn_tables. | |
2952 | */ | |
05864da7 | 2953 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2954 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2955 | char attr_str[BUFSIZ] = {0}; |
2956 | ||
5022c833 | 2957 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2958 | |
2dbe669b DA |
2959 | zlog_debug( |
2960 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2961 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2962 | } |
2963 | ||
2964 | return 1; | |
2965 | } | |
2966 | ||
2967 | return 0; | |
2968 | } | |
2969 | ||
bbc57c6c AK |
2970 | /* don't import hosts that are locally attached */ |
2971 | static inline bool | |
36dd4574 AK |
2972 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
2973 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
2974 | struct bgp_path_info *pi, int install) |
2975 | { | |
26c03e43 | 2976 | esi_t *esi; |
bbc57c6c | 2977 | |
26c03e43 AK |
2978 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2979 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2980 | ||
2981 | /* Don't import routes that point to a local destination */ | |
2982 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2983 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
2984 | char esi_buf[ESI_STR_LEN]; | |
2985 | ||
2986 | zlog_debug( | |
2987 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
2988 | install ? "import" : "unimport", evp, | |
2989 | esi_to_str(esi, esi_buf, | |
2990 | sizeof(esi_buf))); | |
2991 | } | |
2992 | return true; | |
2993 | } | |
58bff4d1 AK |
2994 | } |
2995 | return false; | |
2996 | } | |
26c03e43 | 2997 | |
58bff4d1 AK |
2998 | /* |
2999 | * Install or uninstall a mac-ip route in the provided vrf if | |
3000 | * there is a rt match | |
3001 | */ | |
3002 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3003 | struct bgp_path_info *pi, | |
3004 | int install) | |
3005 | { | |
3006 | int ret = 0; | |
3007 | const struct prefix_evpn *evp = | |
3008 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3009 | ||
3010 | /* Consider "valid" remote routes applicable for | |
3011 | * this VRF. | |
3012 | */ | |
3013 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3014 | && pi->type == ZEBRA_ROUTE_BGP | |
3015 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3016 | return 0; | |
3017 | ||
58bff4d1 AK |
3018 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3019 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3020 | return 0; | |
3021 | ||
74efb822 | 3022 | /* don't import hosts that are locally attached */ |
e57e63eb | 3023 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3024 | bgp_vrf, evp, pi, install)) | |
3025 | return 0; | |
3026 | ||
3027 | if (install) | |
58bff4d1 | 3028 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3029 | else |
58bff4d1 AK |
3030 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3031 | pi); | |
26c03e43 | 3032 | |
58bff4d1 AK |
3033 | if (ret) |
3034 | flog_err(EC_BGP_EVPN_FAIL, | |
3035 | "Failed to %s EVPN %pFX route in VRF %s", | |
3036 | install ? "install" : "uninstall", evp, | |
3037 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3038 | } |
58bff4d1 AK |
3039 | |
3040 | return ret; | |
bbc57c6c AK |
3041 | } |
3042 | ||
5ba238b7 MK |
3043 | /* |
3044 | * Install or uninstall mac-ip routes are appropriate for this | |
3045 | * particular VRF. | |
3046 | */ | |
996c9314 | 3047 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3048 | { |
3049 | afi_t afi; | |
3050 | safi_t safi; | |
9bcb3eef | 3051 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3052 | struct bgp_table *table; |
40381db7 | 3053 | struct bgp_path_info *pi; |
5ba238b7 | 3054 | int ret; |
5e53dce3 | 3055 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3056 | |
3057 | afi = AFI_L2VPN; | |
3058 | safi = SAFI_EVPN; | |
5e53dce3 T |
3059 | bgp_evpn = bgp_get_evpn(); |
3060 | if (!bgp_evpn) | |
5ba238b7 MK |
3061 | return -1; |
3062 | ||
3063 | /* Walk entire global routing table and evaluate routes which could be | |
3064 | * imported into this VRF. Note that we need to loop through all global | |
3065 | * routes to determine which route matches the import rt on vrf | |
3066 | */ | |
9bcb3eef DS |
3067 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3068 | rd_dest = bgp_route_next(rd_dest)) { | |
3069 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3070 | if (!table) |
3071 | continue; | |
3072 | ||
9bcb3eef DS |
3073 | for (dest = bgp_table_top(table); dest; |
3074 | dest = bgp_route_next(dest)) { | |
3075 | const struct prefix_evpn *evp = | |
3076 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3077 | dest); | |
5ba238b7 | 3078 | |
1eb88002 | 3079 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3080 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3081 | || evp->prefix.route_type | |
3082 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3083 | continue; |
3084 | ||
1eb88002 | 3085 | /* if not a mac+ip route skip this route */ |
3714a385 | 3086 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3087 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3088 | continue; |
3089 | ||
9bcb3eef | 3090 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3091 | pi = pi->next) { |
58bff4d1 AK |
3092 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3093 | bgp_vrf, pi, install); | |
3094 | if (ret) | |
3095 | return ret; | |
5ba238b7 MK |
3096 | } |
3097 | } | |
3098 | } | |
3099 | ||
3100 | return 0; | |
3101 | } | |
3102 | ||
128ea8ab | 3103 | /* |
3104 | * Install or uninstall routes of specified type that are appropriate for this | |
3105 | * particular VNI. | |
3106 | */ | |
d62a17ae | 3107 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3108 | struct bgpevpn *vpn, | |
3109 | bgp_evpn_route_type rtype, | |
3110 | int install) | |
3111 | { | |
0291c246 MK |
3112 | afi_t afi; |
3113 | safi_t safi; | |
9bcb3eef | 3114 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3115 | struct bgp_table *table; |
40381db7 | 3116 | struct bgp_path_info *pi; |
0291c246 | 3117 | int ret; |
d62a17ae | 3118 | |
3119 | afi = AFI_L2VPN; | |
3120 | safi = SAFI_EVPN; | |
3121 | ||
3122 | /* Walk entire global routing table and evaluate routes which could be | |
3123 | * imported into this VPN. Note that we cannot just look at the routes | |
3124 | * for | |
3125 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3126 | * RD. | |
3127 | */ | |
3128 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3129 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3130 | rd_dest = bgp_route_next(rd_dest)) { | |
3131 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3132 | if (!table) |
3133 | continue; | |
3134 | ||
9bcb3eef DS |
3135 | for (dest = bgp_table_top(table); dest; |
3136 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3137 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3138 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3139 | dest); | |
d62a17ae | 3140 | |
3141 | if (evp->prefix.route_type != rtype) | |
3142 | continue; | |
3143 | ||
9bcb3eef | 3144 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3145 | pi = pi->next) { |
d62a17ae | 3146 | /* Consider "valid" remote routes applicable for |
3147 | * this VNI. */ | |
40381db7 DS |
3148 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3149 | && pi->type == ZEBRA_ROUTE_BGP | |
3150 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3151 | continue; |
3152 | ||
40381db7 | 3153 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3154 | if (install) |
3155 | ret = install_evpn_route_entry( | |
40381db7 | 3156 | bgp, vpn, evp, pi); |
d62a17ae | 3157 | else |
3158 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3159 | bgp, vpn, evp, pi); |
d62a17ae | 3160 | |
3161 | if (ret) { | |
af4c2728 | 3162 | flog_err( |
e50f7cfd | 3163 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3164 | "%u: Failed to %s EVPN %s route in VNI %u", |
3165 | bgp->vrf_id, | |
3166 | install ? "install" | |
3167 | : "uninstall", | |
3168 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3169 | ? "MACIP" | |
3170 | : "IMET", | |
3171 | vpn->vni); | |
dc52bece DS |
3172 | |
3173 | bgp_dest_unlock_node(rd_dest); | |
3174 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3175 | return ret; |
3176 | } | |
3177 | } | |
3178 | } | |
3179 | } | |
3180 | } | |
3181 | ||
3182 | return 0; | |
128ea8ab | 3183 | } |
3184 | ||
5ba238b7 | 3185 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3186 | * is invoked upon l3vni-add or l3vni import rt change |
3187 | */ | |
5ba238b7 MK |
3188 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3189 | { | |
3190 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3191 | return 0; | |
3192 | } | |
3193 | ||
128ea8ab | 3194 | /* |
3195 | * Install any existing remote routes applicable for this VNI into its | |
3196 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3197 | * RT is changed. | |
3198 | */ | |
d62a17ae | 3199 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3200 | { |
d62a17ae | 3201 | int ret; |
128ea8ab | 3202 | |
d62a17ae | 3203 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3204 | * for this VNI. | |
3205 | */ | |
3206 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3207 | 1); | |
3208 | if (ret) | |
3209 | return ret; | |
128ea8ab | 3210 | |
c44ab6f1 AK |
3211 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3212 | 1); | |
3213 | if (ret) | |
3214 | return ret; | |
3215 | ||
d62a17ae | 3216 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3217 | 1); | |
128ea8ab | 3218 | } |
3219 | ||
5ba238b7 MK |
3220 | /* uninstall routes from l3vni vrf. */ |
3221 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3222 | { | |
3223 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3224 | return 0; | |
3225 | } | |
3226 | ||
90e60aa7 | 3227 | /* |
3228 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3229 | * this is invoked is upon an import RT change. | |
3230 | */ | |
d62a17ae | 3231 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3232 | { |
d62a17ae | 3233 | int ret; |
90e60aa7 | 3234 | |
d62a17ae | 3235 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3236 | * applicable | |
3237 | * for this VNI. | |
3238 | */ | |
3239 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3240 | 0); | |
3241 | if (ret) | |
3242 | return ret; | |
90e60aa7 | 3243 | |
c44ab6f1 | 3244 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3245 | 0); |
c44ab6f1 AK |
3246 | if (ret) |
3247 | return ret; | |
3248 | ||
3249 | ||
d62a17ae | 3250 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3251 | 0); | |
90e60aa7 | 3252 | } |
3253 | ||
d3135ba3 | 3254 | /* |
3255 | * Install or uninstall route in matching VRFs (list). | |
3256 | */ | |
3257 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3258 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3259 | struct bgp_path_info *pi, |
d3135ba3 | 3260 | struct list *vrfs, int install) |
3261 | { | |
d3135ba3 | 3262 | struct bgp *bgp_vrf; |
3263 | struct listnode *node, *nnode; | |
3264 | ||
90264d64 | 3265 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3266 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3267 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3268 | return 0; |
3269 | ||
90264d64 | 3270 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3271 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3272 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3273 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3274 | return 0; |
3275 | ||
d3135ba3 | 3276 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3277 | int ret; | |
3278 | ||
36dd4574 | 3279 | /* don't import hosts that are locally attached */ |
e57e63eb | 3280 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3281 | bgp_vrf, evp, pi, install)) | |
3282 | return 0; | |
3283 | ||
3284 | if (install) | |
40381db7 | 3285 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3286 | else |
996c9314 | 3287 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3288 | pi); |
d3135ba3 | 3289 | |
3290 | if (ret) { | |
e50f7cfd | 3291 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3292 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3293 | bgp_def->vrf_id, |
2dbe669b | 3294 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3295 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3296 | return ret; |
3297 | } | |
3298 | } | |
3299 | ||
3300 | return 0; | |
3301 | } | |
3302 | ||
128ea8ab | 3303 | /* |
3304 | * Install or uninstall route in matching VNIs (list). | |
3305 | */ | |
d62a17ae | 3306 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3307 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3308 | struct bgp_path_info *pi, |
d62a17ae | 3309 | struct list *vnis, int install) |
128ea8ab | 3310 | { |
d62a17ae | 3311 | struct bgpevpn *vpn; |
3312 | struct listnode *node, *nnode; | |
128ea8ab | 3313 | |
d62a17ae | 3314 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3315 | int ret; | |
128ea8ab | 3316 | |
d62a17ae | 3317 | if (!is_vni_live(vpn)) |
3318 | continue; | |
128ea8ab | 3319 | |
d62a17ae | 3320 | if (install) |
40381db7 | 3321 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3322 | else |
40381db7 | 3323 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3324 | |
d62a17ae | 3325 | if (ret) { |
1c50c1c0 QY |
3326 | flog_err(EC_BGP_EVPN_FAIL, |
3327 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3328 | bgp->vrf_id, install ? "install" : "uninstall", | |
3329 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3330 | ? "MACIP" | |
3331 | : "IMET", | |
3332 | vpn->vni); | |
d62a17ae | 3333 | return ret; |
3334 | } | |
3335 | } | |
128ea8ab | 3336 | |
d62a17ae | 3337 | return 0; |
128ea8ab | 3338 | } |
3339 | ||
3340 | /* | |
50f74cf1 | 3341 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3342 | */ |
26c03e43 AK |
3343 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3344 | safi_t safi, const struct prefix *p, | |
3345 | struct bgp_path_info *pi, | |
3346 | int import, bool in_vni_rt, | |
3347 | bool in_vrf_rt) | |
d62a17ae | 3348 | { |
3349 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3350 | struct attr *attr = pi->attr; |
d62a17ae | 3351 | struct ecommunity *ecom; |
f6e07e1b | 3352 | uint32_t i; |
c44ab6f1 | 3353 | struct prefix_evpn ad_evp; |
d62a17ae | 3354 | |
3355 | assert(attr); | |
3356 | ||
fff7545a | 3357 | /* Only type-1, type-2, type-3, type-4 and type-5 |
3358 | * are supported currently | |
3359 | */ | |
d62a17ae | 3360 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3361 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3362 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3363 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3364 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3365 | return 0; |
3366 | ||
3367 | /* If we don't have Route Target, nothing much to do. */ | |
3368 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3369 | return 0; | |
3370 | ||
c44ab6f1 AK |
3371 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3372 | * we need to create a different copy for the VNI | |
3373 | */ | |
3374 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3375 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3376 | ||
b53e67a3 | 3377 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3378 | if (!ecom || !ecom->size) |
3379 | return -1; | |
3380 | ||
50f74cf1 | 3381 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3382 | * attached to the route */ | |
d62a17ae | 3383 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3384 | uint8_t *pnt; |
3385 | uint8_t type, sub_type; | |
d62a17ae | 3386 | struct ecommunity_val *eval; |
3387 | struct ecommunity_val eval_tmp; | |
996c9314 | 3388 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3389 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3390 | struct bgp_evpn_es *es; |
d62a17ae | 3391 | |
3392 | /* Only deal with RTs */ | |
34540b0d | 3393 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3394 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3395 | + (i * ecom->unit_size)); |
d62a17ae | 3396 | type = *pnt++; |
3397 | sub_type = *pnt++; | |
3398 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3399 | continue; | |
3400 | ||
58bff4d1 AK |
3401 | /* non-local MAC-IP routes in the global route table are linked |
3402 | * to the destination ES | |
3403 | */ | |
3404 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3405 | bgp_evpn_path_es_link(pi, 0, | |
3406 | bgp_evpn_attr_get_esi(pi->attr)); | |
3407 | ||
50f74cf1 | 3408 | /* |
3409 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3410 | * IMET route is imported into VNI table. | |
3411 | * prefix routes are imported into VRF table. | |
523cafc4 | 3412 | */ |
50f74cf1 | 3413 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3414 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3415 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3416 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3417 | |
26c03e43 | 3418 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3419 | if (irt) |
40381db7 DS |
3420 | install_uninstall_route_in_vnis( |
3421 | bgp, afi, safi, evp, pi, irt->vnis, | |
3422 | import); | |
50f74cf1 | 3423 | |
26c03e43 | 3424 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3425 | if (vrf_irt) |
40381db7 DS |
3426 | install_uninstall_route_in_vrfs( |
3427 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3428 | import); | |
50f74cf1 | 3429 | |
3430 | /* Also check for non-exact match. | |
3431 | * In this, we mask out the AS and | |
3432 | * only check on the local-admin sub-field. | |
3433 | * This is to facilitate using | |
3434 | * VNI as the RT for EBGP peering too. | |
3435 | */ | |
3436 | irt = NULL; | |
3437 | vrf_irt = NULL; | |
3438 | if (type == ECOMMUNITY_ENCODE_AS | |
3439 | || type == ECOMMUNITY_ENCODE_AS4 | |
3440 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3441 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3442 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3443 | if (in_vni_rt) |
3444 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3445 | if (in_vrf_rt) | |
3446 | vrf_irt = | |
3447 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3448 | } |
3449 | ||
3450 | if (irt) | |
40381db7 DS |
3451 | install_uninstall_route_in_vnis( |
3452 | bgp, afi, safi, evp, pi, irt->vnis, | |
3453 | import); | |
50f74cf1 | 3454 | if (vrf_irt) |
40381db7 DS |
3455 | install_uninstall_route_in_vrfs( |
3456 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3457 | import); | |
50f74cf1 | 3458 | } |
3459 | ||
3460 | /* es route is imported into the es table */ | |
3461 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3462 | ||
3463 | /* we will match based on the entire esi to avoid | |
fff7545a | 3464 | * import of an es route for esi2 into esi1 |
50f74cf1 | 3465 | */ |
c44ab6f1 | 3466 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3467 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3468 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3469 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3470 | } |
d62a17ae | 3471 | } |
3472 | ||
3473 | return 0; | |
128ea8ab | 3474 | } |
3475 | ||
26c03e43 AK |
3476 | /* |
3477 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3478 | */ | |
3479 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3480 | const struct prefix *p, | |
3481 | struct bgp_path_info *pi, int import) | |
3482 | { | |
3483 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3484 | true, true); | |
3485 | } | |
3486 | ||
74efb822 AK |
3487 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
3488 | { | |
3489 | struct bgp *bgp_evpn; | |
3490 | ||
3491 | bgp_evpn = bgp_get_evpn(); | |
3492 | if (!bgp_evpn) | |
3493 | return; | |
3494 | ||
3495 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3496 | &pi->net->p, pi, import); | |
3497 | } | |
3498 | ||
2bb9eff4 DS |
3499 | /* |
3500 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3501 | * routes | |
3502 | */ | |
80b140af MK |
3503 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3504 | { | |
5fd9c12b KA |
3505 | /* Delete ipv4 default route and withdraw from peers */ |
3506 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3507 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3508 | SAFI_UNICAST, false); | |
3509 | ||
80b140af | 3510 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3511 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3512 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3513 | |
5fd9c12b KA |
3514 | /* Delete ipv6 default route and withdraw from peers */ |
3515 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3516 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3517 | SAFI_UNICAST, false); | |
3518 | ||
80b140af | 3519 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3520 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3521 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3522 | } |
3523 | ||
2bb9eff4 DS |
3524 | /* |
3525 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3526 | * routes | |
3527 | */ | |
5394a276 | 3528 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3529 | { |
5394a276 CS |
3530 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3531 | ||
3532 | bgp_evpn = bgp_get_evpn(); | |
3533 | if (!bgp_evpn) | |
3534 | return; | |
3535 | ||
80b140af | 3536 | /* update all ipv4 routes */ |
fdf19f06 MK |
3537 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3538 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3539 | |
5fd9c12b KA |
3540 | /* update ipv4 default route and withdraw from peers */ |
3541 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3542 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3543 | SAFI_UNICAST, true); | |
3544 | ||
80b140af | 3545 | /* update all ipv6 routes */ |
fdf19f06 MK |
3546 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3547 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3548 | |
3549 | /* update ipv6 default route and withdraw from peers */ | |
3550 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3551 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3552 | SAFI_UNICAST, true); | |
3553 | ||
80b140af MK |
3554 | } |
3555 | ||
676f83b9 | 3556 | /* |
3557 | * update and advertise local routes for a VRF as type-5 routes. | |
3558 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3559 | * done in the global route table using the routes which already exist in the | |
3560 | * VRF routing table | |
3561 | */ | |
80b140af | 3562 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3563 | { |
80b140af MK |
3564 | /* skip if the RD is configured */ |
3565 | if (is_vrf_rd_configured(bgp_vrf)) | |
3566 | return; | |
3567 | ||
3568 | /* derive the RD for the VRF based on new router-id */ | |
3569 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3570 | ||
3571 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3572 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3573 | } |
3574 | ||
3575 | /* | |
3576 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3577 | * This is invoked upon VRF RD change. The processing is done only from global | |
3578 | * table. | |
3579 | */ | |
80b140af | 3580 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3581 | { |
80b140af MK |
3582 | /* skip if the RD is configured */ |
3583 | if (is_vrf_rd_configured(bgp_vrf)) | |
3584 | return; | |
3585 | ||
3586 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3587 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3588 | } |
3589 | ||
90e60aa7 | 3590 | /* |
3591 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3592 | * change. Note that the processing is done only on the global route table | |
3593 | * using routes that already exist in the per-VNI table. | |
3594 | */ | |
d62a17ae | 3595 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3596 | { | |
3597 | struct prefix_evpn p; | |
9bcb3eef | 3598 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3599 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3600 | struct attr *attr; |
3601 | afi_t afi = AFI_L2VPN; | |
3602 | safi_t safi = SAFI_EVPN; | |
3603 | ||
3604 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3605 | * attributes to create and advertise the type-3 route for this VNI | |
3606 | * in the global table. | |
fd069644 DS |
3607 | * |
3608 | * RT-3 only if doing head-end replication | |
d62a17ae | 3609 | */ |
833b8a50 AK |
3610 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3611 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3612 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3613 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3614 | if (!dest) /* unexpected */ | |
fd069644 | 3615 | return 0; |
9bcb3eef | 3616 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3617 | if (pi->peer == bgp->peer_self && |
3618 | pi->type == ZEBRA_ROUTE_BGP | |
3619 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3620 | break; | |
3621 | if (!pi) /* unexpected */ | |
3622 | return 0; | |
3623 | attr = pi->attr; | |
d62a17ae | 3624 | |
9c7edc03 AK |
3625 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3626 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3627 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3628 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3629 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3630 | |
fd069644 | 3631 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3632 | bgp_process(bgp, global_dest, afi, safi); |
3633 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3634 | } |
d62a17ae | 3635 | |
3636 | /* Now, walk this VNI's route table and use the route and its attribute | |
3637 | * to create and schedule route in global table. | |
3638 | */ | |
9bcb3eef DS |
3639 | for (dest = bgp_table_top(vpn->route_table); dest; |
3640 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3641 | const struct prefix_evpn *evp = |
9bcb3eef | 3642 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3643 | |
d60f63f0 AD |
3644 | /* |
3645 | * We have already processed type-3 routes. | |
3646 | * Process only type-1 and type-2 routes here. | |
3647 | */ | |
3648 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
3649 | && evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
d62a17ae | 3650 | continue; |
3651 | ||
9bcb3eef | 3652 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3653 | if (pi->peer == bgp->peer_self |
3654 | && pi->type == ZEBRA_ROUTE_BGP | |
3655 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3656 | break; |
40381db7 | 3657 | if (!pi) |
d62a17ae | 3658 | continue; |
3659 | ||
3660 | /* Create route in global routing table using this route entry's | |
3661 | * attribute. | |
3662 | */ | |
40381db7 | 3663 | attr = pi->attr; |
c44ab6f1 | 3664 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3665 | evp, &vpn->prd); |
9bcb3eef | 3666 | assert(global_dest); |
d60f63f0 AD |
3667 | |
3668 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3669 | /* Type-2 route */ | |
3670 | update_evpn_route_entry( | |
3671 | bgp, vpn, afi, safi, global_dest, attr, 1, | |
3672 | &global_pi, 0, mac_mobility_seqnum(attr), | |
9c7edc03 | 3673 | false /* setup_sync */, NULL /* old_is_sync */); |
d60f63f0 AD |
3674 | } else { |
3675 | /* Type-1 route */ | |
3676 | struct bgp_evpn_es *es; | |
3677 | int route_changed = 0; | |
3678 | ||
3679 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
3680 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, | |
e0a79881 | 3681 | global_dest, attr, &global_pi, |
3682 | &route_changed); | |
d60f63f0 | 3683 | } |
d62a17ae | 3684 | |
3685 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3686 | bgp_process(bgp, global_dest, afi, safi); |
3687 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3688 | } |
3689 | ||
3690 | return 0; | |
90e60aa7 | 3691 | } |
3692 | ||
3693 | /* | |
3694 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3695 | * table. Invoked upon router-id change. | |
3696 | */ | |
d62a17ae | 3697 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3698 | { |
d62a17ae | 3699 | struct prefix_evpn p; |
9bcb3eef | 3700 | struct bgp_dest *global_dest; |
40381db7 | 3701 | struct bgp_path_info *pi; |
d62a17ae | 3702 | afi_t afi = AFI_L2VPN; |
3703 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3704 | |
d62a17ae | 3705 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3706 | * for this VNI - from the global table. | |
3707 | */ | |
17151ae9 | 3708 | delete_global_type2_routes(bgp, vpn); |
90e60aa7 | 3709 | |
d62a17ae | 3710 | /* Remove type-3 route for this VNI from global table. */ |
3711 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3712 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3713 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3714 | if (global_dest) { |
d62a17ae | 3715 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3716 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3717 | |
d62a17ae | 3718 | /* Schedule for processing - withdraws to peers happen from |
3719 | * this table. | |
3720 | */ | |
40381db7 | 3721 | if (pi) |
9bcb3eef DS |
3722 | bgp_process(bgp, global_dest, afi, safi); |
3723 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3724 | } |
90e60aa7 | 3725 | |
d60f63f0 AD |
3726 | |
3727 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 3728 | return 0; |
90e60aa7 | 3729 | } |
3730 | ||
2d48ee25 | 3731 | /* |
3732 | * Handle router-id change. Update and advertise local routes corresponding | |
3733 | * to this VNI from peers. Note that this is invoked after updating the | |
3734 | * router-id. The routes in the per-VNI table are used to create routes in | |
3735 | * the global table and schedule them. | |
3736 | */ | |
e3b78da8 | 3737 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3738 | { |
e3b78da8 | 3739 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3740 | |
d62a17ae | 3741 | /* Skip VNIs with configured RD. */ |
3742 | if (is_rd_configured(vpn)) | |
3743 | return; | |
2d48ee25 | 3744 | |
d62a17ae | 3745 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3746 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3747 | } |
3748 | ||
3749 | /* | |
3750 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3751 | * to this VNI from peers. Note that this is invoked prior to updating | |
3752 | * the router-id and is done only on the global route table, the routes | |
3753 | * are needed in the per-VNI table to re-advertise with new router id. | |
3754 | */ | |
e3b78da8 | 3755 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3756 | { |
e3b78da8 | 3757 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3758 | |
d62a17ae | 3759 | /* Skip VNIs with configured RD. */ |
3760 | if (is_rd_configured(vpn)) | |
3761 | return; | |
2d48ee25 | 3762 | |
d62a17ae | 3763 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3764 | } |
3765 | ||
fd069644 DS |
3766 | /* |
3767 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3768 | * This is invoked upon flooding mode changing to head-end replication. | |
3769 | */ | |
e3b78da8 | 3770 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3771 | { |
e3b78da8 | 3772 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3773 | struct bgp *bgp = data; |
3774 | struct prefix_evpn p; | |
3775 | ||
833b8a50 AK |
3776 | if (!vpn || !is_vni_live(vpn) || |
3777 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3778 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3779 | return; |
3780 | ||
3781 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3782 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3783 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3784 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3785 | } | |
3786 | ||
3787 | /* | |
3788 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3789 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3790 | */ | |
e3b78da8 | 3791 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3792 | { |
e3b78da8 | 3793 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3794 | struct bgp *bgp = data; |
3795 | struct prefix_evpn p; | |
3796 | ||
3797 | if (!vpn || !is_vni_live(vpn)) | |
3798 | return; | |
3799 | ||
3800 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3801 | delete_evpn_route(bgp, vpn, &p); | |
3802 | } | |
3803 | ||
128ea8ab | 3804 | /* |
3805 | * Process received EVPN type-2 route (advertise or withdraw). | |
3806 | */ | |
d62a17ae | 3807 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3808 | struct attr *attr, uint8_t *pfx, int psize, |
3809 | uint32_t addpath_id) | |
d62a17ae | 3810 | { |
3811 | struct prefix_rd prd; | |
e121d831 QY |
3812 | struct prefix_evpn p = {}; |
3813 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3814 | uint8_t ipaddr_len; |
3815 | uint8_t macaddr_len; | |
e121d831 QY |
3816 | /* holds the VNI(s) as in packet */ |
3817 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3818 | uint32_t num_labels = 0; |
554cd77a | 3819 | uint32_t eth_tag; |
d62a17ae | 3820 | int ret; |
3821 | ||
3822 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3823 | * additional 3 bytes if there is a second label (VNI): | |
3824 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3825 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3826 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3827 | */ | |
3828 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3829 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3830 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3831 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3832 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3833 | return -1; |
3834 | } | |
3835 | ||
e121d831 QY |
3836 | struct stream *pkt = stream_new(psize); |
3837 | stream_put(pkt, pfx, psize); | |
554cd77a | 3838 | |
d62a17ae | 3839 | /* Make prefix_rd */ |
3840 | prd.family = AF_UNSPEC; | |
3841 | prd.prefixlen = 64; | |
e121d831 QY |
3842 | |
3843 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3844 | |
3845 | /* Make EVPN prefix. */ | |
b03b8898 | 3846 | p.family = AF_EVPN; |
50f74cf1 | 3847 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3848 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3849 | ||
554cd77a | 3850 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3851 | if (attr) { |
e121d831 QY |
3852 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3853 | ||
74efb822 | 3854 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
3855 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
3856 | else | |
3857 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3858 | } else { |
3859 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3860 | } |
d62a17ae | 3861 | |
554cd77a | 3862 | /* Copy Ethernet Tag */ |
e121d831 | 3863 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3864 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3865 | |
3866 | /* Get the MAC Addr len */ | |
e121d831 | 3867 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3868 | |
3869 | /* Get the MAC Addr */ | |
28328ea9 | 3870 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3871 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3872 | } else { |
af4c2728 | 3873 | flog_err( |
e50f7cfd | 3874 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3875 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3876 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3877 | goto fail; |
d62a17ae | 3878 | } |
3879 | ||
3880 | ||
3881 | /* Get the IP. */ | |
e121d831 QY |
3882 | STREAM_GETC(pkt, ipaddr_len); |
3883 | ||
d62a17ae | 3884 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3885 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3886 | flog_err( |
e50f7cfd | 3887 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3888 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3889 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3890 | goto fail; |
d62a17ae | 3891 | } |
3892 | ||
3893 | if (ipaddr_len) { | |
3894 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3895 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3896 | ? IPADDR_V4 |
3897 | : IPADDR_V6; | |
e121d831 | 3898 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3899 | } |
d62a17ae | 3900 | |
b57ba6d2 | 3901 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3902 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3903 | num_labels++; |
e121d831 | 3904 | |
b57ba6d2 | 3905 | /* Do we have a second VNI? */ |
e121d831 | 3906 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3907 | num_labels++; |
e121d831 | 3908 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3909 | } |
d62a17ae | 3910 | |
3911 | /* Process the route. */ | |
3912 | if (attr) | |
3913 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3914 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3915 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3916 | else |
3917 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3918 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3919 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3920 | goto done; |
3921 | ||
3922 | fail: | |
3923 | stream_failure: | |
3924 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3925 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3926 | peer->bgp->vrf_id, peer->host); | |
3927 | ret = -1; | |
3928 | done: | |
3929 | stream_free(pkt); | |
d62a17ae | 3930 | return ret; |
128ea8ab | 3931 | } |
3932 | ||
3933 | /* | |
3934 | * Process received EVPN type-3 route (advertise or withdraw). | |
3935 | */ | |
d62a17ae | 3936 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3937 | struct attr *attr, uint8_t *pfx, int psize, |
3938 | uint32_t addpath_id) | |
d62a17ae | 3939 | { |
3940 | struct prefix_rd prd; | |
3941 | struct prefix_evpn p; | |
d7c0a89a | 3942 | uint8_t ipaddr_len; |
554cd77a | 3943 | uint32_t eth_tag; |
d62a17ae | 3944 | int ret; |
3945 | ||
3946 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3947 | * IP len (1) and IP (4 or 16). | |
3948 | */ | |
3949 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3950 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3951 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3952 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3953 | return -1; |
3954 | } | |
3955 | ||
7fd077aa | 3956 | /* If PMSI is present, log if it is anything other than IR. |
3957 | * Note: We just simply ignore the values as it is not clear if | |
3958 | * doing anything else is better. | |
3959 | */ | |
3960 | if (attr && | |
3961 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3962 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3963 | ||
3964 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3965 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3966 | flog_warn( | |
3967 | EC_BGP_EVPN_PMSI_PRESENT, | |
3968 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3969 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3970 | } |
3971 | } | |
3972 | ||
d62a17ae | 3973 | /* Make prefix_rd */ |
3974 | prd.family = AF_UNSPEC; | |
3975 | prd.prefixlen = 64; | |
3976 | memcpy(&prd.val, pfx, 8); | |
3977 | pfx += 8; | |
3978 | ||
3979 | /* Make EVPN prefix. */ | |
6006b807 | 3980 | memset(&p, 0, sizeof(p)); |
b03b8898 | 3981 | p.family = AF_EVPN; |
50f74cf1 | 3982 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3983 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3984 | ||
554cd77a VB |
3985 | /* Copy Ethernet Tag */ |
3986 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3987 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3988 | pfx += 4; |
3989 | ||
3990 | /* Get the IP. */ | |
3991 | ipaddr_len = *pfx++; | |
3992 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3993 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3994 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3995 | } else { |
af4c2728 | 3996 | flog_err( |
e50f7cfd | 3997 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3998 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3999 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4000 | return -1; | |
4001 | } | |
4002 | ||
4003 | /* Process the route. */ | |
4004 | if (attr) | |
4005 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4006 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4007 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4008 | else |
4009 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4010 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4011 | &prd, NULL, 0, NULL); |
d62a17ae | 4012 | return ret; |
128ea8ab | 4013 | } |
4014 | ||
4015 | /* | |
4016 | * Process received EVPN type-5 route (advertise or withdraw). | |
4017 | */ | |
d62a17ae | 4018 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4019 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4020 | uint32_t addpath_id) |
d62a17ae | 4021 | { |
4022 | struct prefix_rd prd; | |
4023 | struct prefix_evpn p; | |
4024 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4025 | uint8_t ippfx_len; |
4026 | uint32_t eth_tag; | |
b57ba6d2 | 4027 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4028 | int ret; |
66ff6089 | 4029 | bool is_valid_update = true; |
d62a17ae | 4030 | |
4031 | /* Type-5 route should be 34 or 58 bytes: | |
4032 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4033 | * GW (4 or 16) and VNI (3). | |
4034 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4035 | */ | |
4036 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4037 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4038 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4039 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4040 | return -1; |
4041 | } | |
4042 | ||
4043 | /* Make prefix_rd */ | |
4044 | prd.family = AF_UNSPEC; | |
4045 | prd.prefixlen = 64; | |
4046 | memcpy(&prd.val, pfx, 8); | |
4047 | pfx += 8; | |
4048 | ||
4049 | /* Make EVPN prefix. */ | |
6006b807 | 4050 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4051 | p.family = AF_EVPN; |
50f74cf1 | 4052 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4053 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4054 | ||
4055 | /* Additional information outside of prefix - ESI and GW IP */ | |
4056 | memset(&evpn, 0, sizeof(evpn)); | |
4057 | ||
66ff6089 | 4058 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4059 | if (attr) |
66ff6089 | 4060 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4061 | pfx += ESI_BYTES; |
d62a17ae | 4062 | |
4063 | /* Fetch Ethernet Tag. */ | |
4064 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4065 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4066 | pfx += 4; |
4067 | ||
4068 | /* Fetch IP prefix length. */ | |
4069 | ippfx_len = *pfx++; | |
4070 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4071 | flog_err( |
e50f7cfd | 4072 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4073 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4074 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4075 | return -1; | |
4076 | } | |
3714a385 | 4077 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4078 | |
4079 | /* Determine IPv4 or IPv6 prefix */ | |
4080 | /* Since the address and GW are from the same family, this just becomes | |
4081 | * a simple check on the total size. | |
4082 | */ | |
4083 | if (psize == 34) { | |
3714a385 | 4084 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4085 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4086 | pfx += 4; |
860e740b IR |
4087 | SET_IPADDR_V4(&evpn.gw_ip); |
4088 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4089 | pfx += 4; |
d62a17ae | 4090 | } else { |
3714a385 | 4091 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4092 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4093 | IPV6_MAX_BYTELEN); | |
4094 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4095 | SET_IPADDR_V6(&evpn.gw_ip); |
4096 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4097 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4098 | } |
4099 | ||
b57ba6d2 MK |
4100 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4101 | memset(&label, 0, sizeof(label)); | |
4102 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4103 | |
4104 | /* | |
4105 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4106 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4107 | * field | |
6b11bd8d | 4108 | */ |
d62a17ae | 4109 | |
66ff6089 AD |
4110 | /* |
4111 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4112 | * at the same time is should be treated as withdraw | |
4113 | */ | |
860e740b IR |
4114 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4115 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4116 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4117 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4118 | peer->host); | |
4119 | is_valid_update = false; | |
4120 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4121 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4122 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4123 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4124 | if (attr) { |
860e740b IR |
4125 | if (is_zero_mac(&attr->rmac) && |
4126 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4127 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4128 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4129 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4130 | peer->host); | |
c6ec0c74 | 4131 | is_valid_update = false; |
66ff6089 | 4132 | } |
c6ec0c74 KA |
4133 | |
4134 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4135 | is_valid_update = false; | |
4136 | } | |
4137 | ||
d62a17ae | 4138 | /* Process the route. */ |
66ff6089 | 4139 | if (attr && is_valid_update) |
d62a17ae | 4140 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4141 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4142 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4143 | else { |
4144 | if (!is_valid_update) { | |
4145 | char attr_str[BUFSIZ] = {0}; | |
4146 | ||
4147 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4148 | zlog_warn( | |
4149 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4150 | peer->hostname, peer->bgp->vrf_id, &p, | |
4151 | attr_str); | |
4152 | } | |
d62a17ae | 4153 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4154 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4155 | &prd, &label, 1, &evpn); |
66ff6089 | 4156 | } |
d62a17ae | 4157 | |
4158 | return ret; | |
4159 | } | |
4160 | ||
5f040085 DS |
4161 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4162 | const struct prefix_rd *prd, | |
4163 | mpls_label_t *label, uint32_t num_labels, | |
4164 | struct attr *attr) | |
d62a17ae | 4165 | { |
4166 | int len; | |
4167 | char temp[16]; | |
5f040085 | 4168 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4169 | |
b5605493 | 4170 | memset(&temp, 0, sizeof(temp)); |
b03b8898 | 4171 | if (p->family != AF_EVPN) |
d62a17ae | 4172 | return; |
4173 | p_evpn_p = &(p->u.prefix_evpn); | |
4174 | ||
e9fc2840 | 4175 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4176 | IP and GW-IP have to be both ipv4 or ipv6 |
4177 | */ | |
3714a385 | 4178 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4179 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4180 | else |
e9fc2840 | 4181 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4182 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4183 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4184 | stream_put(s, prd->val, 8); | |
6c995628 | 4185 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4186 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4187 | else |
c44ab6f1 | 4188 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4189 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4190 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4191 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4192 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4193 | else |
3714a385 | 4194 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4195 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4196 | const struct bgp_route_evpn *evpn_overlay = |
4197 | bgp_attr_get_evpn_overlay(attr); | |
4198 | ||
3714a385 | 4199 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4200 | stream_put_ipv4(s, |
4201 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4202 | else |
860e740b | 4203 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4204 | } else { |
3714a385 | 4205 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4206 | stream_put_ipv4(s, 0); |
4207 | else | |
4208 | stream_put(s, &temp, 16); | |
4209 | } | |
4210 | ||
b57ba6d2 | 4211 | if (num_labels) |
d62a17ae | 4212 | stream_put(s, label, 3); |
4213 | else | |
4214 | stream_put3(s, 0); | |
128ea8ab | 4215 | } |
4216 | ||
4217 | /* | |
4218 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4219 | */ | |
e3b78da8 | 4220 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4221 | { |
e3b78da8 | 4222 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4223 | |
d62a17ae | 4224 | /* Remove EVPN routes and schedule for processing. */ |
4225 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4226 | |
d62a17ae | 4227 | /* Clear "live" flag and see if hash needs to be freed. */ |
4228 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4229 | if (!is_vni_configured(vpn)) | |
4230 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4231 | } |
4232 | ||
4233 | /* | |
4234 | * Free a VNI entry; iterator function called during cleanup. | |
4235 | */ | |
e3b78da8 | 4236 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4237 | { |
e3b78da8 | 4238 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4239 | |
d62a17ae | 4240 | delete_all_vni_routes(bgp, vpn); |
4241 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4242 | } |
4243 | ||
c581d8b0 MK |
4244 | /* |
4245 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4246 | */ | |
4247 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4248 | { | |
5e53dce3 | 4249 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4250 | |
c581d8b0 | 4251 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4252 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4253 | ||
4254 | /* Map RT to VRF */ | |
5e53dce3 T |
4255 | bgp_evpn = bgp_get_evpn(); |
4256 | if (!bgp_evpn) | |
10ebe1ab MK |
4257 | return; |
4258 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4259 | } |
4260 | ||
4261 | /* | |
4262 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4263 | */ | |
4264 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4265 | { | |
4266 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4267 | } | |
4268 | ||
4269 | /* | |
4270 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4271 | */ | |
4272 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4273 | { | |
4274 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4275 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4276 | } | |
4277 | ||
4278 | /* | |
4279 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4280 | */ | |
4281 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4282 | { | |
4283 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4284 | } | |
128ea8ab | 4285 | |
f1f8b53c MK |
4286 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4287 | { | |
5e53dce3 | 4288 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4289 | struct listnode *node = NULL; |
4290 | struct bgpevpn *vpn = NULL; | |
4291 | ||
5e53dce3 T |
4292 | bgp_evpn = bgp_get_evpn(); |
4293 | if (!bgp_evpn) | |
f1f8b53c MK |
4294 | return; |
4295 | ||
4992b4ae MK |
4296 | /* update all type-5 routes */ |
4297 | update_advertise_vrf_routes(bgp_vrf); | |
4298 | ||
4299 | /* update all type-2 routes */ | |
f1f8b53c | 4300 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4301 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4302 | } |
4303 | ||
bf1061d8 VB |
4304 | /* |
4305 | * Handle autort change for a given VNI. | |
4306 | */ | |
e3b78da8 | 4307 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4308 | { |
e3b78da8 | 4309 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4310 | |
bf1061d8 VB |
4311 | if (!is_import_rt_configured(vpn)) { |
4312 | if (is_vni_live(vpn)) | |
4313 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4314 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4315 | list_delete_all_node(vpn->import_rtl); |
4316 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4317 | if (is_vni_live(vpn)) | |
4318 | bgp_evpn_install_routes(bgp, vpn); | |
4319 | } | |
4320 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4321 | list_delete_all_node(vpn->export_rtl); |
4322 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4323 | if (is_vni_live(vpn)) | |
4324 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4325 | } | |
4326 | } | |
4327 | ||
4204021e PG |
4328 | /* |
4329 | * Handle autort change for L3VNI. | |
4330 | */ | |
4331 | static void update_autort_l3vni(struct bgp *bgp) | |
4332 | { | |
4333 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4334 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4335 | return; | |
4336 | ||
4337 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4338 | if (is_l3vni_live(bgp)) | |
4339 | uninstall_routes_for_vrf(bgp); | |
4340 | ||
4341 | /* Cleanup the RT to VRF mapping */ | |
4342 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4343 | ||
4344 | /* Remove auto generated RT */ | |
4345 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4346 | ||
4347 | list_delete_all_node(bgp->vrf_import_rtl); | |
4348 | ||
4349 | /* Map auto derive or configured RTs */ | |
4350 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4351 | } | |
4352 | ||
4353 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4354 | list_delete_all_node(bgp->vrf_export_rtl); | |
4355 | ||
4356 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4357 | ||
4358 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4359 | ||
4360 | if (is_l3vni_live(bgp)) | |
4361 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4362 | } | |
4363 | ||
4364 | if (!is_l3vni_live(bgp)) | |
4365 | return; | |
4366 | ||
4367 | /* advertise type-5 routes if needed */ | |
4368 | update_advertise_vrf_routes(bgp); | |
4369 | ||
4370 | /* install all remote routes belonging to this l3vni | |
4371 | * into corresponding vrf | |
4372 | */ | |
4373 | install_routes_for_vrf(bgp); | |
4374 | } | |
4375 | ||
128ea8ab | 4376 | /* |
4377 | * Public functions. | |
4378 | */ | |
4379 | ||
5424b7ba | 4380 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4381 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4382 | afi_t afi, safi_t safi) |
4383 | { | |
4384 | int ret = 0; | |
4385 | struct prefix_evpn evp; | |
5424b7ba | 4386 | |
31310b25 | 4387 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4388 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4389 | if (ret) |
af4c2728 | 4390 | flog_err( |
e50f7cfd | 4391 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4392 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4393 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4394 | } |
4395 | ||
342dd0c6 | 4396 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4397 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4398 | { |
4399 | struct bgp_table *table = NULL; | |
9bcb3eef | 4400 | struct bgp_dest *dest = NULL; |
40381db7 | 4401 | struct bgp_path_info *pi; |
342dd0c6 | 4402 | |
053905d2 | 4403 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4404 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4405 | /* Only care about "selected" routes. Also ensure that |
4406 | * these are routes that are injectable into EVPN. | |
4407 | */ | |
25f2ca53 | 4408 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4409 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4410 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4411 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4412 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4413 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4414 | safi); |
25f2ca53 | 4415 | break; |
4416 | } | |
4417 | } | |
4418 | } | |
5424b7ba | 4419 | } |
342dd0c6 | 4420 | |
5fd9c12b KA |
4421 | /* |
4422 | * evpn - enable advertisement of default g/w | |
4423 | */ | |
4424 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4425 | safi_t safi, bool add) | |
4426 | { | |
4427 | struct prefix ip_prefix; | |
4428 | ||
4429 | /* form the default prefix 0.0.0.0/0 */ | |
6006b807 | 4430 | memset(&ip_prefix, 0, sizeof(ip_prefix)); |
5fd9c12b KA |
4431 | ip_prefix.family = afi2family(afi); |
4432 | ||
4433 | if (add) { | |
4434 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4435 | NULL, afi, safi); | |
4436 | } else { | |
4437 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4438 | afi, safi); | |
4439 | } | |
4440 | } | |
4441 | ||
4442 | ||
2f69f6d3 | 4443 | /* |
4444 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4445 | * to this function correspond to those of the source IP prefix (best | |
4446 | * path in the case of the attr. In the case of a local prefix (when we | |
4447 | * are advertising local subnets), the src_attr will be NULL. | |
4448 | */ | |
bd494ec5 | 4449 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4450 | struct attr *src_attr, afi_t afi, |
4451 | safi_t safi) | |
5424b7ba MK |
4452 | { |
4453 | int ret = 0; | |
4454 | struct prefix_evpn evp; | |
7c82b312 | 4455 | |
31310b25 | 4456 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 4457 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 4458 | if (ret) |
e50f7cfd | 4459 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4460 | "%u: Failed to create type-5 route for prefix %pFX", |
4461 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4462 | } |
4463 | ||
2f69f6d3 | 4464 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4465 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4466 | * advertisement is enabled. | |
4467 | */ | |
996c9314 LB |
4468 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4469 | safi_t safi) | |
342dd0c6 | 4470 | { |
4471 | struct bgp_table *table = NULL; | |
9bcb3eef | 4472 | struct bgp_dest *dest = NULL; |
40381db7 | 4473 | struct bgp_path_info *pi; |
342dd0c6 | 4474 | |
053905d2 | 4475 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4476 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4477 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4478 | * attribute. Also, ensure that the route is injectable |
4479 | * into EVPN. | |
2f69f6d3 | 4480 | * TODO: Support for AddPath for EVPN. |
4481 | */ | |
9bcb3eef | 4482 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4483 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4484 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4485 | |
4486 | /* apply the route-map */ | |
4487 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4488 | route_map_result_t ret; |
e34291b8 | 4489 | struct bgp_path_info tmp_pi; |
4490 | struct bgp_path_info_extra tmp_pie; | |
4491 | struct attr tmp_attr; | |
4492 | ||
4493 | tmp_attr = *pi->attr; | |
4494 | ||
4495 | /* Fill temp path_info */ | |
9bcb3eef DS |
4496 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4497 | dest, pi, pi->peer, | |
4498 | &tmp_attr); | |
e34291b8 | 4499 | |
4500 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4501 | |
996c9314 LB |
4502 | ret = route_map_apply( |
4503 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4504 | .map, | |
9bcb3eef | 4505 | bgp_dest_get_prefix(dest), |
1782514f | 4506 | &tmp_pi); |
e34291b8 | 4507 | if (ret == RMAP_DENYMATCH) { |
4508 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4509 | continue; |
e34291b8 | 4510 | } |
4511 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4512 | bgp_vrf, |
9bcb3eef | 4513 | bgp_dest_get_prefix(dest), |
b54892e0 | 4514 | &tmp_attr, afi, safi); |
e34291b8 | 4515 | } else |
4516 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4517 | bgp_vrf, |
9bcb3eef | 4518 | bgp_dest_get_prefix(dest), |
b54892e0 | 4519 | pi->attr, afi, safi); |
2f69f6d3 | 4520 | break; |
4521 | } | |
4522 | } | |
31310b25 | 4523 | } |
342dd0c6 | 4524 | } |
4525 | ||
996c9314 | 4526 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4527 | { |
4528 | struct listnode *node, *nnode, *node_to_del; | |
4529 | struct ecommunity *ecom, *ecom_auto; | |
4530 | struct ecommunity_val eval; | |
4531 | ||
bf1061d8 VB |
4532 | if (bgp->advertise_autort_rfc8365) |
4533 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4534 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4535 | ||
4536 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4537 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4538 | node_to_del = NULL; |
4539 | ||
4540 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4541 | if (ecommunity_match(ecom, ecom_auto)) { | |
4542 | ecommunity_free(&ecom); | |
4543 | node_to_del = node; | |
d74a6cc1 | 4544 | break; |
c581d8b0 MK |
4545 | } |
4546 | } | |
4547 | ||
4548 | if (node_to_del) | |
4549 | list_delete_node(rtl, node_to_del); | |
4550 | ||
4551 | ecommunity_free(&ecom_auto); | |
4552 | } | |
4553 | ||
4554 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4555 | struct ecommunity *ecomadd) |
c581d8b0 | 4556 | { |
5ba238b7 | 4557 | /* uninstall routes from vrf */ |
3d0b43d7 | 4558 | if (is_l3vni_live(bgp_vrf)) |
4559 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4560 | |
4561 | /* Cleanup the RT to VRF mapping */ | |
4562 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4563 | ||
c581d8b0 MK |
4564 | /* Remove auto generated RT */ |
4565 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4566 | ||
4567 | /* Add the newly configured RT to RT list */ | |
4568 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4569 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4570 | ||
3d0b43d7 | 4571 | /* map VRF to its RTs and install routes matching the new RTs */ |
4572 | if (is_l3vni_live(bgp_vrf)) { | |
4573 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4574 | install_routes_for_vrf(bgp_vrf); | |
4575 | } | |
c581d8b0 MK |
4576 | } |
4577 | ||
4578 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4579 | struct ecommunity *ecomdel) | |
4580 | { | |
4581 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4582 | struct ecommunity *ecom = NULL; | |
4583 | ||
5ba238b7 | 4584 | /* uninstall routes from vrf */ |
3d0b43d7 | 4585 | if (is_l3vni_live(bgp_vrf)) |
4586 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4587 | |
4588 | /* Cleanup the RT to VRF mapping */ | |
4589 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4590 | ||
c581d8b0 MK |
4591 | /* remove the RT from the RT list */ |
4592 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4593 | if (ecommunity_match(ecom, ecomdel)) { | |
4594 | ecommunity_free(&ecom); | |
4595 | node_to_del = node; | |
4596 | break; | |
4597 | } | |
4598 | } | |
4599 | ||
4600 | if (node_to_del) | |
4601 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4602 | ||
b3a4db3d | 4603 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4604 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4605 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4606 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4607 | if (is_l3vni_live(bgp_vrf)) |
4608 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4609 | } |
4610 | ||
3d0b43d7 | 4611 | /* map VRFs to its RTs and install routes matching this new RT */ |
4612 | if (is_l3vni_live(bgp_vrf)) { | |
4613 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4614 | install_routes_for_vrf(bgp_vrf); | |
4615 | } | |
c581d8b0 MK |
4616 | } |
4617 | ||
4618 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4619 | struct ecommunity *ecomadd) | |
4620 | { | |
4621 | /* remove auto-generated RT */ | |
4622 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4623 | ||
4624 | /* Add the new RT to the RT list */ | |
4625 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4626 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4627 | ||
ebdc9e64 AD |
4628 | if (is_l3vni_live(bgp_vrf)) |
4629 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4630 | } |
4631 | ||
4632 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4633 | struct ecommunity *ecomdel) | |
4634 | { | |
4635 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4636 | struct ecommunity *ecom = NULL; | |
4637 | ||
4638 | /* Remove the RT from the RT list */ | |
4639 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4640 | if (ecommunity_match(ecom, ecomdel)) { | |
4641 | ecommunity_free(&ecom); | |
4642 | node_to_del = node; | |
4643 | break; | |
4644 | } | |
4645 | } | |
4646 | ||
4647 | if (node_to_del) | |
4648 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4649 | ||
1525e99f DS |
4650 | /* |
4651 | * Temporary assert to make SA happy. | |
4652 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4653 | * which means that SA is going to complain about | |
4654 | * the list_isempty call, which doesn't NULL check. | |
4655 | * So until we get this situation cleaned up, here | |
4656 | * we are. | |
4657 | */ | |
4658 | assert(bgp_vrf->vrf_export_rtl); | |
4659 | ||
c581d8b0 | 4660 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4661 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4662 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4663 | if (is_l3vni_live(bgp_vrf)) |
4664 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4665 | } |
4666 | ||
ebdc9e64 AD |
4667 | if (is_l3vni_live(bgp_vrf)) |
4668 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4669 | } |
4670 | ||
2d48ee25 | 4671 | /* |
4672 | * Handle change to BGP router id. This is invoked twice by the change | |
4673 | * handler, first before the router id has been changed and then after | |
4674 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4675 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4676 | * will result in the routes being re-advertised. |
4677 | */ | |
d62a17ae | 4678 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4679 | { |
5394a276 CS |
4680 | struct listnode *node; |
4681 | struct bgp *bgp_vrf; | |
4682 | ||
676f83b9 | 4683 | if (withdraw) { |
4684 | ||
4685 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4686 | stored in the global table for this vrf |
4687 | */ | |
80b140af | 4688 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4689 | |
4690 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4691 | * L2-VNIs |
4692 | */ | |
d62a17ae | 4693 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4694 | (void (*)(struct hash_bucket *, |
d62a17ae | 4695 | void *))withdraw_router_id_vni, |
4696 | bgp); | |
5394a276 CS |
4697 | |
4698 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4699 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4700 | if (bgp_vrf->evpn_info->advertise_pip && | |
4701 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4702 | == INADDR_ANY)) | |
4703 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4704 | = INADDR_ANY; | |
4705 | } | |
4706 | } | |
676f83b9 | 4707 | } else { |
4708 | ||
5394a276 CS |
4709 | /* Assign new default instance router-id */ |
4710 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4711 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4712 | if (bgp_vrf->evpn_info->advertise_pip && | |
4713 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4714 | == INADDR_ANY)) { | |
4715 | bgp_vrf->evpn_info->pip_ip = | |
4716 | bgp->router_id; | |
4717 | /* advertise type-5 routes with | |
4718 | * new nexthop | |
4719 | */ | |
4720 | update_advertise_vrf_routes(bgp_vrf); | |
4721 | } | |
4722 | } | |
4723 | } | |
4724 | ||
676f83b9 | 4725 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4726 | * RD |
4727 | */ | |
80b140af | 4728 | update_router_id_vrf(bgp); |
676f83b9 | 4729 | |
4730 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4731 | * new RD |
4732 | */ | |
d62a17ae | 4733 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4734 | (void (*)(struct hash_bucket *, |
d62a17ae | 4735 | void *))update_router_id_vni, |
4736 | bgp); | |
676f83b9 | 4737 | } |
2d48ee25 | 4738 | } |
4739 | ||
bf1061d8 VB |
4740 | /* |
4741 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4742 | */ | |
4743 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4744 | { | |
4745 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4746 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4747 | void*))update_autort_vni, |
4748 | bgp); | |
4204021e PG |
4749 | if (bgp->l3vni) |
4750 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
4751 | } |
4752 | ||
90e60aa7 | 4753 | /* |
4754 | * Handle change to export RT - update and advertise local routes. | |
4755 | */ | |
d62a17ae | 4756 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4757 | { |
d62a17ae | 4758 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4759 | } |
4760 | ||
996c9314 | 4761 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4762 | { |
4763 | if (withdraw) | |
4764 | delete_withdraw_vrf_routes(bgp_vrf); | |
4765 | else | |
4766 | update_advertise_vrf_routes(bgp_vrf); | |
4767 | } | |
4768 | ||
90e60aa7 | 4769 | /* |
4770 | * Handle change to RD. This is invoked twice by the change handler, | |
4771 | * first before the RD has been changed and then after the RD has | |
4772 | * been changed. The first invocation will result in local routes | |
4773 | * of this VNI being deleted and withdrawn and the next will result | |
4774 | * in the routes being re-advertised. | |
4775 | */ | |
d62a17ae | 4776 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4777 | int withdraw) | |
90e60aa7 | 4778 | { |
d62a17ae | 4779 | if (withdraw) |
4780 | delete_withdraw_vni_routes(bgp, vpn); | |
4781 | else | |
4782 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4783 | } |
4784 | ||
4785 | /* | |
4786 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4787 | */ | |
d62a17ae | 4788 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4789 | { |
d62a17ae | 4790 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4791 | } |
4792 | ||
4793 | /* | |
4794 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4795 | * to Import RT. | |
4796 | */ | |
d62a17ae | 4797 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4798 | { |
d62a17ae | 4799 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4800 | } |
4801 | ||
b16031a2 | 4802 | /* |
b57ba6d2 | 4803 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4804 | */ |
d7c0a89a | 4805 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4806 | int len) |
b16031a2 | 4807 | { |
b57ba6d2 | 4808 | vni_t vni1, vni2; |
b16031a2 | 4809 | |
b57ba6d2 MK |
4810 | vni1 = label2vni(label); |
4811 | if (num_labels == 2) { | |
996c9314 | 4812 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4813 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4814 | } else | |
4815 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4816 | return buf; |
b16031a2 | 4817 | } |
4818 | ||
9c92b5f7 MK |
4819 | /* |
4820 | * Function to convert evpn route to json format. | |
4821 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4822 | */ | |
bd494ec5 | 4823 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4824 | { |
b682f6de | 4825 | char buf1[ETHER_ADDR_STRLEN]; |
4826 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4827 | uint8_t family; |
4828 | uint8_t prefixlen; | |
9c92b5f7 | 4829 | |
b682f6de | 4830 | if (!json) |
4831 | return; | |
9c92b5f7 | 4832 | |
44c69747 LK |
4833 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4834 | ||
4835 | switch (p->prefix.route_type) { | |
4836 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4837 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4838 | p->prefix.macip_addr.eth_tag); |
4839 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4840 | json_object_string_add(json, "mac", | |
4841 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4842 | sizeof(buf1))); | |
4843 | ||
4844 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4845 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4846 | AF_INET6; | |
4847 | prefixlen = (family == AF_INET) ? | |
4848 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4849 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4850 | buf2, PREFIX2STR_BUFFER); | |
4851 | json_object_int_add(json, "ipLen", prefixlen); | |
4852 | json_object_string_add(json, "ip", buf2); | |
4853 | } | |
4854 | break; | |
dff8f48d | 4855 | |
44c69747 LK |
4856 | case BGP_EVPN_IMET_ROUTE: |
4857 | json_object_int_add(json, "ethTag", | |
4858 | p->prefix.imet_addr.eth_tag); | |
4859 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4860 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4861 | IPV6_MAX_BITLEN; | |
4862 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4863 | PREFIX2STR_BUFFER); | |
4864 | json_object_int_add(json, "ipLen", prefixlen); | |
4865 | json_object_string_add(json, "ip", buf2); | |
4866 | break; | |
dff8f48d | 4867 | |
44c69747 LK |
4868 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4869 | json_object_int_add(json, "ethTag", | |
4870 | p->prefix.prefix_addr.eth_tag); | |
4871 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4872 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4873 | buf2, sizeof(buf2)); | |
4874 | json_object_int_add(json, "ipLen", | |
4875 | p->prefix.prefix_addr.ip_prefix_length); | |
4876 | json_object_string_add(json, "ip", buf2); | |
4877 | break; | |
4878 | ||
4879 | default: | |
4880 | break; | |
dff8f48d | 4881 | } |
9c92b5f7 MK |
4882 | } |
4883 | ||
128ea8ab | 4884 | /* |
4885 | * Encode EVPN prefix in Update (MP_REACH) | |
4886 | */ | |
5f040085 DS |
4887 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4888 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 4889 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 4890 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 4891 | { |
4892 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4893 | int len, ipa_len = 0; |
d62a17ae | 4894 | |
be92fc9f | 4895 | if (addpath_capable) |
d62a17ae | 4896 | stream_putl(s, addpath_tx_id); |
4897 | ||
4898 | /* Route type */ | |
4899 | stream_putc(s, evp->prefix.route_type); | |
4900 | ||
4901 | switch (evp->prefix.route_type) { | |
4902 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4903 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4904 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4905 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4906 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4907 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4908 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4909 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4910 | len += 3; | |
4911 | stream_putc(s, len); | |
996c9314 | 4912 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4913 | if (attr) |
c44ab6f1 | 4914 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4915 | else |
4916 | stream_put(s, 0, 10); | |
3714a385 | 4917 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4918 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4919 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4920 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4921 | if (ipa_len) /* IP */ | |
4922 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4923 | ipa_len); | |
b57ba6d2 MK |
4924 | /* 1st label is the L2 VNI */ |
4925 | stream_put(s, label, BGP_LABEL_BYTES); | |
4926 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4927 | if (ipa_len && num_labels > 1) | |
996c9314 | 4928 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4929 | break; |
4930 | ||
4931 | case BGP_EVPN_IMET_ROUTE: | |
4932 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4933 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4934 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4935 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4936 | /* Originating Router's IP Addr */ | |
3714a385 | 4937 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4938 | break; |
4939 | ||
50f74cf1 | 4940 | case BGP_EVPN_ES_ROUTE: |
4941 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4942 | stream_put(s, prd->val, 8); /* RD */ | |
4943 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4944 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4945 | /* VTEP IP */ |
4946 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4947 | break; |
4948 | ||
c44ab6f1 AK |
4949 | case BGP_EVPN_AD_ROUTE: |
4950 | /* RD, ESI, EthTag, 1 VNI */ | |
4951 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4952 | stream_putc(s, len); | |
4953 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4954 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4955 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4956 | stream_put(s, label, BGP_LABEL_BYTES); | |
4957 | break; | |
4958 | ||
d62a17ae | 4959 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4960 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4961 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4962 | break; |
4963 | ||
4964 | default: | |
4965 | break; | |
4966 | } | |
4967 | } | |
4968 | ||
4969 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4970 | struct bgp_nlri *packet, int withdraw) | |
4971 | { | |
d7c0a89a QY |
4972 | uint8_t *pnt; |
4973 | uint8_t *lim; | |
d62a17ae | 4974 | afi_t afi; |
4975 | safi_t safi; | |
d7c0a89a | 4976 | uint32_t addpath_id; |
be92fc9f | 4977 | bool addpath_capable; |
d62a17ae | 4978 | int psize = 0; |
d7c0a89a | 4979 | uint8_t rtype; |
d62a17ae | 4980 | struct prefix p; |
4981 | ||
d62a17ae | 4982 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4983 | pnt = packet->nlri; | |
4984 | lim = pnt + packet->length; | |
4985 | afi = packet->afi; | |
4986 | safi = packet->safi; | |
4987 | addpath_id = 0; | |
4988 | ||
be92fc9f | 4989 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 4990 | |
4991 | for (; pnt < lim; pnt += psize) { | |
4992 | /* Clear prefix structure. */ | |
6006b807 | 4993 | memset(&p, 0, sizeof(p)); |
d62a17ae | 4994 | |
4995 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 4996 | if (addpath_capable) { |
d62a17ae | 4997 | /* When packet overflow occurs return immediately. */ |
4998 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4999 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5000 | |
a3a850a1 S |
5001 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5002 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5003 | pnt += BGP_ADDPATH_ID_LEN; |
5004 | } | |
5005 | ||
5006 | /* All EVPN NLRI types start with type and length. */ | |
5007 | if (pnt + 2 > lim) | |
513386b5 | 5008 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5009 | |
5010 | rtype = *pnt++; | |
3f54c705 | 5011 | psize = *pnt++; |
d62a17ae | 5012 | |
5013 | /* When packet overflow occur return immediately. */ | |
5014 | if (pnt + psize > lim) | |
513386b5 | 5015 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5016 | |
5017 | switch (rtype) { | |
5018 | case BGP_EVPN_MAC_IP_ROUTE: | |
5019 | if (process_type2_route(peer, afi, safi, | |
5020 | withdraw ? NULL : attr, pnt, | |
5021 | psize, addpath_id)) { | |
af4c2728 | 5022 | flog_err( |
e50f7cfd | 5023 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5024 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5025 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5026 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5027 | } |
5028 | break; | |
5029 | ||
5030 | case BGP_EVPN_IMET_ROUTE: | |
5031 | if (process_type3_route(peer, afi, safi, | |
5032 | withdraw ? NULL : attr, pnt, | |
5033 | psize, addpath_id)) { | |
af4c2728 | 5034 | flog_err( |
e50f7cfd | 5035 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5036 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5037 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5038 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5039 | } |
5040 | break; | |
5041 | ||
50f74cf1 | 5042 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5043 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5044 | withdraw ? NULL : attr, pnt, |
5045 | psize, addpath_id)) { | |
af4c2728 | 5046 | flog_err( |
e50f7cfd | 5047 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5048 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5049 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5050 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5051 | } |
5052 | break; | |
5053 | ||
c44ab6f1 AK |
5054 | case BGP_EVPN_AD_ROUTE: |
5055 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5056 | withdraw ? NULL : attr, pnt, | |
5057 | psize, addpath_id)) { | |
5058 | flog_err( | |
5059 | EC_BGP_PKT_PROCESS, | |
5060 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5061 | peer->bgp->vrf_id, peer->host, psize); | |
5062 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5063 | } | |
5064 | break; | |
5065 | ||
d62a17ae | 5066 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5067 | if (process_type5_route(peer, afi, safi, |
5068 | withdraw ? NULL : attr, pnt, | |
5069 | psize, addpath_id)) { | |
af4c2728 | 5070 | flog_err( |
e50f7cfd | 5071 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5072 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5073 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5074 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5075 | } |
5076 | break; | |
5077 | ||
5078 | default: | |
5079 | break; | |
5080 | } | |
5081 | } | |
5082 | ||
5083 | /* Packet length consistency check. */ | |
5084 | if (pnt != lim) | |
513386b5 | 5085 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5086 | |
513386b5 | 5087 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5088 | } |
5089 | ||
10ebe1ab MK |
5090 | /* |
5091 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5092 | * The mapping will be used during route processing. | |
10ebe1ab MK |
5093 | * bgp_vrf: specific bgp vrf instance on which RT is configured |
5094 | */ | |
5095 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5096 | { | |
f6e07e1b | 5097 | uint32_t i = 0; |
10ebe1ab MK |
5098 | struct ecommunity_val *eval = NULL; |
5099 | struct listnode *node = NULL, *nnode = NULL; | |
5100 | struct ecommunity *ecom = NULL; | |
5101 | ||
5102 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5103 | for (i = 0; i < ecom->size; i++) { | |
5104 | eval = (struct ecommunity_val *)(ecom->val | |
5105 | + (i | |
5106 | * ECOMMUNITY_SIZE)); | |
5107 | map_vrf_to_rt(bgp_vrf, eval); | |
5108 | } | |
5109 | } | |
5110 | } | |
5111 | ||
5112 | /* | |
5113 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5114 | */ | |
5115 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5116 | { | |
f6e07e1b | 5117 | uint32_t i; |
10ebe1ab MK |
5118 | struct ecommunity_val *eval; |
5119 | struct listnode *node, *nnode; | |
5120 | struct ecommunity *ecom; | |
5121 | ||
5122 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5123 | for (i = 0; i < ecom->size; i++) { | |
5124 | struct vrf_irt_node *irt; | |
5125 | struct ecommunity_val eval_tmp; | |
5126 | ||
5127 | eval = (struct ecommunity_val *)(ecom->val | |
5128 | + (i | |
5129 | * ECOMMUNITY_SIZE)); | |
5130 | /* If using "automatic" RT, we only care about the | |
5131 | * local-admin sub-field. | |
5132 | * This is to facilitate using VNI as the RT for EBGP | |
5133 | * peering too. | |
5134 | */ | |
5135 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5136 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5137 | BGP_VRF_IMPORT_RT_CFGD)) | |
5138 | mask_ecom_global_admin(&eval_tmp, eval); | |
5139 | ||
5140 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5141 | if (irt) | |
5142 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5143 | } | |
5144 | } | |
5145 | } | |
5146 | ||
5147 | ||
128ea8ab | 5148 | /* |
5149 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5150 | * The mapping will be used during route processing. | |
5151 | */ | |
d62a17ae | 5152 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5153 | { |
f6e07e1b | 5154 | uint32_t i; |
d62a17ae | 5155 | struct ecommunity_val *eval; |
5156 | struct listnode *node, *nnode; | |
5157 | struct ecommunity *ecom; | |
128ea8ab | 5158 | |
d62a17ae | 5159 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5160 | for (i = 0; i < ecom->size; i++) { | |
5161 | eval = (struct ecommunity_val *)(ecom->val | |
5162 | + (i | |
5163 | * ECOMMUNITY_SIZE)); | |
5164 | map_vni_to_rt(bgp, vpn, eval); | |
5165 | } | |
5166 | } | |
128ea8ab | 5167 | } |
5168 | ||
5169 | /* | |
5170 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5171 | */ | |
d62a17ae | 5172 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5173 | { |
f6e07e1b | 5174 | uint32_t i; |
d62a17ae | 5175 | struct ecommunity_val *eval; |
5176 | struct listnode *node, *nnode; | |
5177 | struct ecommunity *ecom; | |
128ea8ab | 5178 | |
d62a17ae | 5179 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5180 | for (i = 0; i < ecom->size; i++) { | |
5181 | struct irt_node *irt; | |
5182 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5183 | |
d62a17ae | 5184 | eval = (struct ecommunity_val *)(ecom->val |
5185 | + (i | |
5186 | * ECOMMUNITY_SIZE)); | |
5187 | /* If using "automatic" RT, we only care about the | |
5188 | * local-admin sub-field. | |
5189 | * This is to facilitate using VNI as the RT for EBGP | |
5190 | * peering too. | |
5191 | */ | |
5192 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5193 | if (!is_import_rt_configured(vpn)) | |
5194 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5195 | |
d62a17ae | 5196 | irt = lookup_import_rt(bgp, &eval_tmp); |
5197 | if (irt) | |
5198 | unmap_vni_from_rt(bgp, vpn, irt); | |
5199 | } | |
5200 | } | |
128ea8ab | 5201 | } |
5202 | ||
5203 | /* | |
5204 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5205 | * The mapping will be used during route processing. | |
5206 | */ | |
d62a17ae | 5207 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5208 | { |
c581d8b0 | 5209 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5210 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5211 | |
d62a17ae | 5212 | /* Map RT to VNI */ |
5213 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5214 | } |
5215 | ||
5216 | /* | |
5217 | * Derive Export RT automatically for VNI. | |
5218 | */ | |
d62a17ae | 5219 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5220 | { |
c581d8b0 | 5221 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5222 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5223 | } |
5224 | ||
676f83b9 | 5225 | /* |
5226 | * Derive RD automatically for VNI using passed information - it | |
5227 | * is of the form RouterId:unique-id-for-vni. | |
5228 | */ | |
5229 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5230 | { | |
9e97ff03 CS |
5231 | if (is_vrf_rd_configured(bgp)) |
5232 | return; | |
5233 | ||
92708db6 | 5234 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5235 | } |
5236 | ||
128ea8ab | 5237 | /* |
5238 | * Derive RD automatically for VNI using passed information - it | |
5239 | * is of the form RouterId:unique-id-for-vni. | |
5240 | */ | |
d62a17ae | 5241 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5242 | { |
c44ab6f1 | 5243 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5244 | |
d62a17ae | 5245 | vpn->prd.family = AF_UNSPEC; |
5246 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5247 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5248 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5249 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5250 | } |
5251 | ||
7df407ed CS |
5252 | /* |
5253 | * Lookup L3-VNI | |
5254 | */ | |
5255 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5256 | { | |
5257 | struct list *inst = bm->bgp; | |
5258 | struct listnode *node; | |
5259 | struct bgp *bgp_vrf; | |
5260 | ||
5261 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5262 | if (bgp_vrf->l3vni == vni) | |
5263 | return true; | |
5264 | } | |
5265 | ||
5266 | return false; | |
5267 | } | |
5268 | ||
128ea8ab | 5269 | /* |
5270 | * Lookup VNI. | |
5271 | */ | |
d62a17ae | 5272 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5273 | { |
d62a17ae | 5274 | struct bgpevpn *vpn; |
5275 | struct bgpevpn tmp; | |
128ea8ab | 5276 | |
6006b807 | 5277 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 5278 | tmp.vni = vni; |
5279 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5280 | return vpn; | |
128ea8ab | 5281 | } |
5282 | ||
5283 | /* | |
5284 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5285 | */ | |
d62a17ae | 5286 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5287 | struct in_addr originator_ip, |
5288 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5289 | struct in_addr mcast_grp, |
5290 | ifindex_t svi_ifindex) | |
128ea8ab | 5291 | { |
d62a17ae | 5292 | struct bgpevpn *vpn; |
128ea8ab | 5293 | |
d62a17ae | 5294 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5295 | |
d62a17ae | 5296 | /* Set values - RD and RT set to defaults. */ |
5297 | vpn->vni = vni; | |
5298 | vpn->originator_ip = originator_ip; | |
29c53922 | 5299 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5300 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5301 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5302 | |
d62a17ae | 5303 | /* Initialize route-target import and export lists */ |
5304 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5305 | vpn->import_rtl->cmp = |
5306 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5307 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5308 | vpn->export_rtl = list_new(); |
f4a5218d AK |
5309 | vpn->export_rtl->cmp = |
5310 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5311 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 5312 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5313 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5314 | |
d62a17ae | 5315 | /* Initialize EVPN route table. */ |
960035b2 | 5316 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5317 | |
d62a17ae | 5318 | /* Add to hash */ |
ac390ef8 | 5319 | (void)hash_get(bgp->vnihash, vpn, hash_alloc_intern); |
6a8657d0 | 5320 | |
021b6596 AD |
5321 | bgp_evpn_remote_ip_hash_init(vpn); |
5322 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5323 | ||
6a8657d0 MK |
5324 | /* add to l2vni list on corresponding vrf */ |
5325 | bgpevpn_link_to_l3vni(vpn); | |
5326 | ||
c44ab6f1 AK |
5327 | bgp_evpn_vni_es_init(vpn); |
5328 | ||
d62a17ae | 5329 | QOBJ_REG(vpn, bgpevpn); |
5330 | return vpn; | |
128ea8ab | 5331 | } |
5332 | ||
5333 | /* | |
5334 | * Free a given VPN - called in multiple scenarios such as zebra | |
5335 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5336 | * This just frees appropriate memory, caller should have taken other | |
5337 | * needed actions. | |
5338 | */ | |
d62a17ae | 5339 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5340 | { |
021b6596 | 5341 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 5342 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5343 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5344 | bgp_table_unlock(vpn->route_table); |
5345 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5346 | list_delete(&vpn->import_rtl); |
5347 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5348 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 5349 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 5350 | hash_release(bgp->vnihash, vpn); |
5351 | QOBJ_UNREG(vpn); | |
5352 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5353 | } |
5354 | ||
50f74cf1 | 5355 | /* |
5356 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5357 | */ |
d62a17ae | 5358 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5359 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5360 | { |
40381db7 | 5361 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5362 | } |
5363 | ||
5364 | /* | |
50f74cf1 | 5365 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5366 | */ |
d62a17ae | 5367 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5368 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5369 | { |
40381db7 | 5370 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5371 | } |
5372 | ||
db0e1937 MK |
5373 | /* filter routes which have martian next hops */ |
5374 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5375 | { | |
0291c246 MK |
5376 | afi_t afi; |
5377 | safi_t safi; | |
9bcb3eef | 5378 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5379 | struct bgp_table *table; |
40381db7 | 5380 | struct bgp_path_info *pi; |
db0e1937 MK |
5381 | |
5382 | afi = AFI_L2VPN; | |
5383 | safi = SAFI_EVPN; | |
5384 | ||
5385 | /* Walk entire global routing table and evaluate routes which could be | |
5386 | * imported into this VPN. Note that we cannot just look at the routes | |
5387 | * for the VNI's RD - | |
5388 | * remote routes applicable for this VNI could have any RD. | |
5389 | */ | |
5390 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5391 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5392 | rd_dest = bgp_route_next(rd_dest)) { | |
5393 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5394 | if (!table) |
5395 | continue; | |
5396 | ||
9bcb3eef DS |
5397 | for (dest = bgp_table_top(table); dest; |
5398 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5399 | |
9bcb3eef | 5400 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5401 | pi = pi->next) { |
db0e1937 MK |
5402 | |
5403 | /* Consider "valid" remote routes applicable for | |
5404 | * this VNI. */ | |
40381db7 DS |
5405 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5406 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5407 | continue; |
9bcb3eef DS |
5408 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5409 | pi->sub_type, pi->attr, | |
5410 | dest)) { | |
b54892e0 | 5411 | const struct prefix *p = |
9bcb3eef | 5412 | bgp_dest_get_prefix(dest); |
db0e1937 | 5413 | |
b54892e0 DS |
5414 | if (bgp_debug_update(pi->peer, p, NULL, |
5415 | 1)) { | |
5416 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5417 | |
b54892e0 | 5418 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5419 | attr_str, |
5420 | sizeof(attr_str)); | |
db0e1937 | 5421 | |
db0e1937 | 5422 | zlog_debug( |
56ca3b5b | 5423 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5424 | bgp->vrf_id, dest, |
db0e1937 | 5425 | attr_str); |
b54892e0 | 5426 | } |
db0e1937 | 5427 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5428 | p, pi); |
db0e1937 | 5429 | |
9bcb3eef | 5430 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5431 | safi); |
db0e1937 | 5432 | } |
db0e1937 MK |
5433 | } |
5434 | } | |
5435 | } | |
5436 | ||
5437 | return 0; | |
5438 | } | |
5439 | ||
128ea8ab | 5440 | /* |
5441 | * Handle del of a local MACIP. | |
5442 | */ | |
d62a17ae | 5443 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5444 | struct ipaddr *ip, int state) |
128ea8ab | 5445 | { |
d62a17ae | 5446 | struct bgpevpn *vpn; |
5447 | struct prefix_evpn p; | |
9bcb3eef | 5448 | struct bgp_dest *dest; |
128ea8ab | 5449 | |
d62a17ae | 5450 | /* Lookup VNI hash - should exist. */ |
5451 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5452 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5453 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5454 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5455 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5456 | return -1; | |
5457 | } | |
128ea8ab | 5458 | |
d62a17ae | 5459 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5460 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5461 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5462 | delete_evpn_route(bgp, vpn, &p); | |
5463 | } else { | |
5464 | /* Re-instate the current remote best path if any */ | |
9bcb3eef | 5465 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
e71ad4b6 | 5466 | if (dest) { |
9bcb3eef | 5467 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
5468 | bgp_dest_unlock_node(dest); |
5469 | } | |
ec0ab544 | 5470 | } |
128ea8ab | 5471 | |
d62a17ae | 5472 | return 0; |
128ea8ab | 5473 | } |
5474 | ||
5475 | /* | |
5476 | * Handle add of a local MACIP. | |
5477 | */ | |
d62a17ae | 5478 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5479 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5480 | { |
d62a17ae | 5481 | struct bgpevpn *vpn; |
5482 | struct prefix_evpn p; | |
128ea8ab | 5483 | |
d62a17ae | 5484 | /* Lookup VNI hash - should exist. */ |
5485 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5486 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5487 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5488 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5489 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5490 | return -1; | |
5491 | } | |
128ea8ab | 5492 | |
d62a17ae | 5493 | /* Create EVPN type-2 route and schedule for processing. */ |
5494 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5495 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 5496 | flog_err( |
e50f7cfd | 5497 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 5498 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 5499 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5500 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5501 | ? "sticky gateway" | |
5502 | : "", | |
c0d72166 | 5503 | mac, ip, flags); |
d62a17ae | 5504 | return -1; |
5505 | } | |
128ea8ab | 5506 | |
d62a17ae | 5507 | return 0; |
128ea8ab | 5508 | } |
5509 | ||
e3b78da8 | 5510 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5511 | struct bgp *bgp_vrf) |
5512 | { | |
e3b78da8 | 5513 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5514 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5515 | |
5e53dce3 T |
5516 | bgp_evpn = bgp_get_evpn(); |
5517 | assert(bgp_evpn); | |
6a8657d0 | 5518 | |
6a8657d0 MK |
5519 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5520 | bgpevpn_link_to_l3vni(vpn); | |
5521 | } | |
5522 | ||
14e814ea CS |
5523 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5524 | struct ethaddr *svi_rmac, | |
5525 | struct ethaddr *vrr_rmac, | |
0483af6e | 5526 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5527 | ifindex_t svi_ifindex, |
5528 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5529 | { |
5530 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5531 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5532 | struct listnode *node = NULL; |
5533 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5534 | as_t as = 0; |
5535 | ||
3621ebc5 | 5536 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5537 | * auto-creatio |
5538 | */ | |
5e53dce3 T |
5539 | bgp_evpn = bgp_get_evpn(); |
5540 | if (!bgp_evpn) { | |
af4c2728 | 5541 | flog_err( |
e50f7cfd | 5542 | EC_BGP_NO_DFLT, |
3621ebc5 | 5543 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5544 | l3vni); |
fe1dc5a3 MK |
5545 | return -1; |
5546 | } | |
5e53dce3 | 5547 | as = bgp_evpn->as; |
fe1dc5a3 | 5548 | |
0437e105 | 5549 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5550 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5551 | if (!bgp_vrf) { |
5552 | ||
5553 | int ret = 0; | |
5554 | ||
5d5393b9 DL |
5555 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5556 | vrf_id == VRF_DEFAULT | |
5557 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5558 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5559 | switch (ret) { |
fe1dc5a3 | 5560 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5561 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
5562 | "BGP instance is already running; AS is %u", |
5563 | as); | |
fe1dc5a3 MK |
5564 | return -1; |
5565 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5566 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 5567 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
5568 | return -1; |
5569 | } | |
5570 | ||
5571 | /* mark as auto created */ | |
5572 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5573 | } | |
5574 | ||
0483af6e | 5575 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5576 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5577 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5578 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5579 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5580 | |
14e814ea CS |
5581 | /* copy anycast MAC from VRR MAC */ |
5582 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5583 | /* copy sys RMAC from SVI MAC */ | |
5584 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5585 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5586 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5587 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5588 | ||
c0d72166 DS |
5589 | if (bgp_debug_zebra(NULL)) |
5590 | zlog_debug( | |
5591 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
5592 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
5593 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5594 | : "disable", | |
5595 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
5596 | &bgp_vrf->evpn_info->pip_rmac_static, | |
5597 | is_anycast_mac ? "Enable" : "Disable"); | |
5598 | ||
c48d9f5f | 5599 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5600 | if (filter) { |
c48d9f5f MK |
5601 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5602 | ||
10f70510 AD |
5603 | /* |
5604 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5605 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5606 | * that explicitly. | |
5607 | */ | |
5608 | } else { | |
5609 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5610 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5611 | ||
5612 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5613 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5614 | ||
5615 | /* | |
5616 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5617 | * flag, update all MACIP routes in this VNI | |
5618 | */ | |
5619 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5620 | update_all_type2_routes(bgp_evpn, vpn); | |
5621 | } | |
5622 | } | |
5623 | } | |
5624 | ||
530e8a6e | 5625 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5626 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5627 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5628 | else |
5629 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5630 | ||
c581d8b0 MK |
5631 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5632 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5633 | |
5634 | /* auto derive RD */ | |
676f83b9 | 5635 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5636 | |
6a8657d0 | 5637 | /* link all corresponding l2vnis */ |
5e53dce3 | 5638 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5639 | (void (*)(struct hash_bucket *, |
996c9314 | 5640 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5641 | bgp_vrf); |
5642 | ||
c48d9f5f MK |
5643 | /* Only update all corresponding type-2 routes if we are advertising two |
5644 | * labels along with type-2 routes | |
5645 | */ | |
5646 | if (!filter) | |
5647 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5648 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5649 | |
06d2e8f3 MK |
5650 | /* advertise type-5 routes if needed */ |
5651 | update_advertise_vrf_routes(bgp_vrf); | |
5652 | ||
5ba238b7 MK |
5653 | /* install all remote routes belonging to this l3vni into correspondng |
5654 | * vrf */ | |
5655 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5656 | |
5657 | return 0; | |
5658 | } | |
5659 | ||
996c9314 | 5660 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5661 | { |
5662 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5663 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5664 | struct listnode *node = NULL; |
18abc1eb | 5665 | struct listnode *next = NULL; |
f1f8b53c | 5666 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5667 | |
5668 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5669 | if (!bgp_vrf) { | |
af4c2728 | 5670 | flog_err( |
e50f7cfd | 5671 | EC_BGP_NO_DFLT, |
996c9314 LB |
5672 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5673 | l3vni); | |
fe1dc5a3 MK |
5674 | return -1; |
5675 | } | |
5676 | ||
5e53dce3 T |
5677 | bgp_evpn = bgp_get_evpn(); |
5678 | if (!bgp_evpn) { | |
af4c2728 | 5679 | flog_err( |
e50f7cfd | 5680 | EC_BGP_NO_DFLT, |
3621ebc5 | 5681 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5682 | l3vni); |
f1f8b53c MK |
5683 | return -1; |
5684 | } | |
5685 | ||
d846168d | 5686 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5687 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5688 | * routes. This will uninstalling the routes from zebra and decremnt the |
5689 | * bgp info count. | |
523cafc4 | 5690 | */ |
d846168d | 5691 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5692 | |
06d2e8f3 MK |
5693 | /* delete/withdraw all type-5 routes */ |
5694 | delete_withdraw_vrf_routes(bgp_vrf); | |
5695 | ||
fe1dc5a3 MK |
5696 | /* remove the l3vni from vrf instance */ |
5697 | bgp_vrf->l3vni = 0; | |
5698 | ||
5699 | /* remove the Rmac from the BGP vrf */ | |
5700 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5701 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5702 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5703 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5704 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5705 | |
530e8a6e | 5706 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5707 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5708 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5709 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5710 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5711 | } |
530e8a6e CS |
5712 | |
5713 | /* remove default export RT */ | |
5714 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5715 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5716 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5717 | } |
fe1dc5a3 | 5718 | |
f1f8b53c | 5719 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5720 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5721 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5722 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5723 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5724 | } |
5725 | } | |
fe1dc5a3 | 5726 | |
18abc1eb | 5727 | /* If any L2VNIs point to this instance, unlink them. */ |
5728 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5729 | bgpevpn_unlink_from_l3vni(vpn); | |
5730 | ||
ff9d54fb CS |
5731 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5732 | ||
fe1dc5a3 MK |
5733 | /* Delete the instance if it was autocreated */ |
5734 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5735 | bgp_delete(bgp_vrf); | |
5736 | ||
5737 | return 0; | |
5738 | } | |
5739 | ||
128ea8ab | 5740 | /* |
5741 | * Handle del of a local VNI. | |
5742 | */ | |
d62a17ae | 5743 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5744 | { |
d62a17ae | 5745 | struct bgpevpn *vpn; |
128ea8ab | 5746 | |
d62a17ae | 5747 | /* Locate VNI hash */ |
5748 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5749 | if (!vpn) { | |
1e00627b | 5750 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5751 | flog_warn( |
e50f7cfd | 5752 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5753 | "%u: VNI hash entry for VNI %u not found at DEL", |
5754 | bgp->vrf_id, vni); | |
d62a17ae | 5755 | return 0; |
5756 | } | |
128ea8ab | 5757 | |
d62a17ae | 5758 | /* Remove all local EVPN routes and schedule for processing (to |
5759 | * withdraw from peers). | |
5760 | */ | |
5761 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5762 | |
021b6596 AD |
5763 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
5764 | ||
9daa5d47 | 5765 | vpn->svi_ifindex = 0; |
db0e1937 MK |
5766 | /* |
5767 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5768 | */ | |
5769 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5770 | ||
d62a17ae | 5771 | /* Clear "live" flag and see if hash needs to be freed. */ |
5772 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5773 | if (!is_vni_configured(vpn)) | |
5774 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5775 | |
d62a17ae | 5776 | return 0; |
128ea8ab | 5777 | } |
5778 | ||
5779 | /* | |
d1911c26 | 5780 | * Handle add (or update) of a local VNI. The VNI changes we care |
5781 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5782 | */ |
d62a17ae | 5783 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5784 | struct in_addr originator_ip, |
5785 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5786 | struct in_addr mcast_grp, |
5787 | ifindex_t svi_ifindex) | |
d62a17ae | 5788 | { |
5789 | struct bgpevpn *vpn; | |
5790 | struct prefix_evpn p; | |
5791 | ||
d62a17ae | 5792 | /* Lookup VNI. If present and no change, exit. */ |
5793 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5794 | if (vpn) { |
29c53922 | 5795 | |
d1911c26 | 5796 | if (is_vni_live(vpn) |
5797 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5798 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
5799 | && vpn->tenant_vrf_id == tenant_vrf_id |
5800 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 5801 | /* Probably some other param has changed that we don't |
5802 | * care about. */ | |
5803 | return 0; | |
5804 | ||
76d07c7a AK |
5805 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5806 | ||
021b6596 AD |
5807 | if (vpn->svi_ifindex != svi_ifindex) { |
5808 | ||
5809 | /* | |
5810 | * Unresolve all the gateway IP nexthops for this VNI | |
5811 | * for old SVI | |
5812 | */ | |
dc6cef73 AD |
5813 | bgp_evpn_remote_ip_hash_iterate( |
5814 | vpn, | |
5815 | (void (*)(struct hash_bucket *, void *)) | |
5816 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
5817 | vpn); |
5818 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
5819 | vpn->svi_ifindex = svi_ifindex; | |
5820 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5821 | ||
5822 | /* | |
5823 | * Resolve all the gateway IP nexthops for this VNI | |
5824 | * for new SVI | |
5825 | */ | |
dc6cef73 AD |
5826 | bgp_evpn_remote_ip_hash_iterate( |
5827 | vpn, | |
5828 | (void (*)(struct hash_bucket *, void *)) | |
5829 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
5830 | vpn); |
5831 | } | |
9daa5d47 | 5832 | |
d1911c26 | 5833 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 5834 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
5835 | |
5836 | /* | |
5837 | * Unresolve all the gateway IP nexthops for this VNI | |
5838 | * in old tenant vrf | |
5839 | */ | |
dc6cef73 AD |
5840 | bgp_evpn_remote_ip_hash_iterate( |
5841 | vpn, | |
5842 | (void (*)(struct hash_bucket *, void *)) | |
5843 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 5844 | vpn); |
6a8657d0 | 5845 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 5846 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 5847 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
5848 | |
5849 | /* | |
5850 | * Resolve all the gateway IP nexthops for this VNI | |
5851 | * in new tenant vrf | |
5852 | */ | |
dc6cef73 AD |
5853 | bgp_evpn_remote_ip_hash_iterate( |
5854 | vpn, | |
5855 | (void (*)(struct hash_bucket *, void *)) | |
5856 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 5857 | vpn); |
6a8657d0 | 5858 | } |
29c53922 | 5859 | |
d1911c26 | 5860 | /* If tunnel endpoint IP has changed, update (and delete prior |
5861 | * type-3 route, if needed.) | |
5862 | */ | |
5863 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5864 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5865 | |
d1911c26 | 5866 | /* Update all routes with new endpoint IP and/or export RT |
5867 | * for VRFs | |
5868 | */ | |
5869 | if (is_vni_live(vpn)) | |
5870 | update_routes_for_vni(bgp, vpn); | |
879e43a5 | 5871 | } else { |
5872 | /* Create or update as appropriate. */ | |
76d07c7a | 5873 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
879e43a5 | 5874 | mcast_grp, svi_ifindex); |
d62a17ae | 5875 | } |
5876 | ||
db0e1937 | 5877 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5878 | if (is_vni_live(vpn)) |
5879 | return 0; | |
5880 | ||
d62a17ae | 5881 | /* Mark as "live" */ |
5882 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5883 | ||
db0e1937 MK |
5884 | /* tunnel is now active, add tunnel-ip to db */ |
5885 | bgp_tip_add(bgp, &originator_ip); | |
5886 | ||
5887 | /* filter routes as nexthop database has changed */ | |
5888 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5889 | ||
fd069644 DS |
5890 | /* |
5891 | * Create EVPN type-3 route and schedule for processing. | |
5892 | * | |
5893 | * RT-3 only if doing head-end replication | |
5894 | */ | |
833b8a50 AK |
5895 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5896 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5897 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5898 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5899 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5900 | "%u: Type3 route creation failure for VNI %u", | |
5901 | bgp->vrf_id, vni); | |
5902 | return -1; | |
5903 | } | |
d62a17ae | 5904 | } |
5905 | ||
5906 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5907 | * VNI, | |
5908 | * install them. | |
5909 | */ | |
5910 | install_routes_for_vni(bgp, vpn); | |
5911 | ||
d7d97010 MK |
5912 | /* If we are advertising gateway mac-ip |
5913 | It needs to be conveyed again to zebra */ | |
5914 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5915 | ||
df070e6f CS |
5916 | /* advertise svi mac-ip knob to zebra */ |
5917 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5918 | ||
d62a17ae | 5919 | return 0; |
b18825eb | 5920 | } |
14c1a7bf | 5921 | |
fd069644 DS |
5922 | /* |
5923 | * Handle change in setting for BUM handling. The supported values | |
5924 | * are head-end replication and dropping all BUM packets. Any change | |
5925 | * should be registered with zebra. Also, if doing head-end replication, | |
5926 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5927 | * to be dropped, the RT-3s must be withdrawn. | |
5928 | */ | |
5929 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5930 | { | |
5931 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5932 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5933 | "Flooding" : "Flooding Disabled"); | |
5934 | ||
5935 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5936 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5937 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5938 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5939 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5940 | } | |
5941 | ||
7724c0a1 | 5942 | /* |
5943 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5944 | * EVPN routes from peers. | |
5945 | */ | |
d62a17ae | 5946 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5947 | { |
e3b78da8 | 5948 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5949 | void *))cleanup_vni_on_disable, |
5950 | bgp); | |
7724c0a1 | 5951 | } |
5952 | ||
14c1a7bf | 5953 | /* |
5954 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5955 | * BGP instance (default) is being freed. | |
5956 | */ | |
d62a17ae | 5957 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5958 | { |
1525e99f | 5959 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5960 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5961 | bgp); |
5962 | ||
5963 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5964 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5965 | |
5966 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5967 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 5968 | |
021b6596 AD |
5969 | hash_free(bgp->vni_svi_hash); |
5970 | bgp->vni_svi_hash = NULL; | |
1525e99f | 5971 | hash_free(bgp->vnihash); |
d62a17ae | 5972 | bgp->vnihash = NULL; |
1525e99f | 5973 | |
6a154c88 DL |
5974 | list_delete(&bgp->vrf_import_rtl); |
5975 | list_delete(&bgp->vrf_export_rtl); | |
5976 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5977 | } |
5978 | ||
5979 | /* | |
5980 | * Initialization for EVPN | |
5981 | * Create | |
5982 | * VNI hash table | |
5983 | * hash for RT to VNI | |
14c1a7bf | 5984 | */ |
d62a17ae | 5985 | void bgp_evpn_init(struct bgp *bgp) |
5986 | { | |
5987 | bgp->vnihash = | |
5988 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
5989 | bgp->vni_svi_hash = |
5990 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
5991 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 5992 | bgp->import_rt_hash = |
5993 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5994 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5995 | bgp->vrf_import_rt_hash = |
5996 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5997 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5998 | bgp->vrf_import_rtl = list_new(); |
5999 | bgp->vrf_import_rtl->cmp = | |
f4a5218d AK |
6000 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6001 | bgp->vrf_import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
c581d8b0 MK |
6002 | bgp->vrf_export_rtl = list_new(); |
6003 | bgp->vrf_export_rtl->cmp = | |
f4a5218d AK |
6004 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6005 | bgp->vrf_export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
6a8657d0 | 6006 | bgp->l2vnis = list_new(); |
64465785 | 6007 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6008 | /* By default Duplicate Address Dection is enabled. |
6009 | * Max-moves (N) 5, detection time (M) 180 | |
6010 | * default action is warning-only | |
6011 | * freeze action permanently freezes address, | |
6012 | * and freeze time (auto-recovery) is disabled. | |
6013 | */ | |
6014 | if (bgp->evpn_info) { | |
6015 | bgp->evpn_info->dup_addr_detect = true; | |
6016 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6017 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6018 | bgp->evpn_info->dad_freeze = false; | |
6019 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6020 | /* Initialize zebra vxlan */ |
6021 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6022 | /* Enable PIP feature by default for bgp vrf instance */ |
6023 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6024 | struct bgp *bgp_default; | |
6025 | ||
6026 | bgp->evpn_info->advertise_pip = true; | |
6027 | bgp_default = bgp_get_default(); | |
6028 | if (bgp_default) | |
6029 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6030 | } | |
85c8d83b | 6031 | } |
fd069644 DS |
6032 | |
6033 | /* Default BUM handling is to do head-end replication. */ | |
6034 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6035 | |
6036 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6037 | } |
10ebe1ab MK |
6038 | |
6039 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6040 | { | |
6041 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6042 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6043 | } |
44c69747 LK |
6044 | |
6045 | /* | |
6046 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6047 | */ | |
5f040085 | 6048 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6049 | { |
6050 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6051 | ||
6052 | if (!pfx || pfx->family != AF_EVPN) | |
6053 | return 0; | |
6054 | ||
6055 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6056 | return 0; | |
6057 | ||
6058 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6059 | } | |
7c312383 AD |
6060 | |
6061 | /* | |
6062 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6063 | */ | |
5a1ae2c2 | 6064 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6065 | { |
6066 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6067 | ||
6068 | /* | |
e11329ca | 6069 | * EVPN routes should be marked as valid only if the nexthop is |
6070 | * reachable. Only if this happens, the route should be imported | |
6071 | * (into VNI or VRF routing tables) and/or advertised. | |
fff7545a | 6072 | * Note: This is currently applied for EVPN type-1, type-2, |
6073 | * type-3, type-4 and type-5 routes. | |
6074 | * It may be tweaked later on for other routes, or | |
e11329ca | 6075 | * even removed completely when all routes are handled. |
7c312383 | 6076 | */ |
fa46a5cd AK |
6077 | if (pfx && pfx->family == AF_EVPN |
6078 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6079 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6080 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6081 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6082 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6083 | return true; |
6084 | ||
6085 | return false; | |
6086 | } | |
021b6596 AD |
6087 | |
6088 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6089 | { | |
6090 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6091 | struct evpn_remote_ip *ip; | |
6092 | ||
6093 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6094 | *ip = *key; | |
6095 | ip->macip_path_list = list_new(); | |
6096 | ||
6097 | return ip; | |
6098 | } | |
6099 | ||
6100 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6101 | { | |
6102 | const struct evpn_remote_ip *ip = p; | |
6103 | const struct ipaddr *addr = &ip->addr; | |
6104 | ||
6105 | if (IS_IPADDR_V4(addr)) | |
6106 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6107 | ||
6108 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6109 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6110 | } | |
6111 | ||
6112 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6113 | { | |
6114 | const struct evpn_remote_ip *ip1 = p1; | |
6115 | const struct evpn_remote_ip *ip2 = p2; | |
6116 | ||
761cc919 | 6117 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6118 | } |
6119 | ||
6120 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6121 | { | |
dc6cef73 AD |
6122 | if (!evpn_resolve_overlay_index()) |
6123 | return; | |
6124 | ||
021b6596 AD |
6125 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6126 | bgp_evpn_remote_ip_hash_cmp, | |
6127 | "BGP EVPN remote IP hash"); | |
6128 | } | |
6129 | ||
6130 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6131 | { | |
6132 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6133 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6134 | ||
6135 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6136 | ||
6137 | list_delete(&ip->macip_path_list); | |
6138 | ||
6139 | hash_release(vpn->remote_ip_hash, ip); | |
6140 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6141 | } | |
6142 | ||
6143 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6144 | { | |
dc6cef73 | 6145 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6146 | return; |
6147 | ||
6148 | hash_iterate(vpn->remote_ip_hash, | |
6149 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6150 | vpn); | |
6151 | ||
6152 | hash_free(vpn->remote_ip_hash); | |
6153 | vpn->remote_ip_hash = NULL; | |
6154 | } | |
6155 | ||
6156 | /* Add a remote MAC/IP route to hash table */ | |
6157 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6158 | struct bgp_path_info *pi) | |
6159 | { | |
6160 | struct evpn_remote_ip tmp; | |
6161 | struct evpn_remote_ip *ip; | |
6162 | struct prefix_evpn *evp; | |
6163 | ||
dc6cef73 AD |
6164 | if (!evpn_resolve_overlay_index()) |
6165 | return; | |
6166 | ||
6167 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6168 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6169 | return; | |
6170 | ||
021b6596 AD |
6171 | evp = (struct prefix_evpn *)&pi->net->p; |
6172 | ||
6173 | if (evp->family != AF_EVPN | |
6174 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6175 | || is_evpn_prefix_ipaddr_none(evp)) | |
6176 | return; | |
6177 | ||
6178 | tmp.addr = evp->prefix.macip_addr.ip; | |
6179 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6180 | if (ip) { | |
6181 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6182 | return; | |
6183 | (void)listnode_add(ip->macip_path_list, pi); | |
6184 | return; | |
6185 | } | |
6186 | ||
6187 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
021b6596 AD |
6188 | (void)listnode_add(ip->macip_path_list, pi); |
6189 | ||
6190 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6191 | } | |
6192 | ||
6193 | /* Delete a remote MAC/IP route from hash table */ | |
6194 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6195 | struct bgp_path_info *pi) | |
6196 | { | |
6197 | struct evpn_remote_ip tmp; | |
6198 | struct evpn_remote_ip *ip; | |
6199 | struct prefix_evpn *evp; | |
6200 | ||
dc6cef73 AD |
6201 | if (!evpn_resolve_overlay_index()) |
6202 | return; | |
6203 | ||
021b6596 AD |
6204 | evp = (struct prefix_evpn *)&pi->net->p; |
6205 | ||
6206 | if (evp->family != AF_EVPN | |
6207 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6208 | || is_evpn_prefix_ipaddr_none(evp)) | |
6209 | return; | |
6210 | ||
6211 | tmp.addr = evp->prefix.macip_addr.ip; | |
6212 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6213 | if (ip == NULL) | |
6214 | return; | |
6215 | ||
6216 | listnode_delete(ip->macip_path_list, pi); | |
6217 | ||
6218 | if (ip->macip_path_list->count == 0) { | |
6219 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6220 | hash_release(vpn->remote_ip_hash, ip); | |
6221 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6222 | } | |
6223 | } | |
6224 | ||
dc6cef73 AD |
6225 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6226 | void (*func)(struct hash_bucket *, | |
6227 | void *), | |
6228 | void *arg) | |
6229 | { | |
6230 | if (!evpn_resolve_overlay_index()) | |
6231 | return; | |
6232 | ||
6233 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6234 | } | |
6235 | ||
021b6596 AD |
6236 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6237 | { | |
6238 | char buf[INET6_ADDRSTRLEN]; | |
6239 | char buf2[EVPN_ROUTE_STRLEN]; | |
6240 | struct prefix_evpn *evp; | |
6241 | ||
6242 | struct listnode *node = NULL; | |
6243 | struct bgp_path_info *pi = NULL; | |
6244 | struct vty *vty = (struct vty *)args; | |
6245 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6246 | ||
6247 | vty_out(vty, " Remote IP: %s\n", | |
6248 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6249 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
6250 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) { | |
6251 | evp = (struct prefix_evpn *)&pi->net->p; | |
6252 | prefix2str(evp, buf2, sizeof(buf2)); | |
6253 | vty_out(vty, " %s\n", buf2); | |
6254 | } | |
6255 | } | |
6256 | ||
6257 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6258 | { | |
6259 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6260 | struct vty *vty = (struct vty *)args; | |
6261 | ||
6262 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6263 | bgp_evpn_remote_ip_hash_iterate( |
6264 | vpn, | |
021b6596 AD |
6265 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6266 | vty); | |
6267 | vty_out(vty, "\n"); | |
6268 | } | |
6269 | ||
6270 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6271 | void *args) | |
6272 | { | |
6273 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6274 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6275 | ||
6276 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6277 | } | |
6278 | ||
6279 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6280 | void *args) | |
6281 | { | |
6282 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6283 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6284 | ||
6285 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6286 | } | |
6287 | ||
6288 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6289 | { | |
6290 | const struct bgpevpn *vpn = p; | |
6291 | ||
6292 | return jhash_1word(vpn->svi_ifindex, 0); | |
6293 | } | |
6294 | ||
6295 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6296 | { | |
6297 | const struct bgpevpn *vpn1 = p1; | |
6298 | const struct bgpevpn *vpn2 = p2; | |
6299 | ||
6300 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6301 | } | |
6302 | ||
6303 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
6304 | ifindex_t svi) | |
6305 | { | |
6306 | struct bgpevpn *vpn; | |
6307 | struct bgpevpn tmp; | |
6308 | ||
6006b807 | 6309 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
6310 | tmp.svi_ifindex = svi; |
6311 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
6312 | return vpn; | |
6313 | } | |
6314 | ||
6315 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
6316 | { | |
6317 | if (vpn->svi_ifindex == 0) | |
6318 | return; | |
6319 | ||
8e3aae66 | 6320 | (void)hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); |
021b6596 AD |
6321 | } |
6322 | ||
6323 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
6324 | struct bgpevpn *vpn) | |
6325 | { | |
6326 | if (vpn->svi_ifindex == 0) | |
6327 | return; | |
6328 | ||
6329 | hash_release(bgp->vni_svi_hash, vpn); | |
6330 | } | |
6331 | ||
6332 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
6333 | { | |
6334 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
6335 | struct vty *vty = (struct vty *)args; | |
6336 | ||
6337 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
6338 | } | |
6339 | ||
6340 | /* | |
6341 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
6342 | * gateway IP overlay index. | |
6343 | * This function returns true if there is a remote MAC/IP route for the gateway | |
6344 | * IP in the EVI of the nexthop SVI. | |
6345 | */ | |
6346 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
6347 | { | |
6348 | struct bgp *bgp_evpn = NULL; | |
6349 | struct bgpevpn *vpn = NULL; | |
6350 | struct evpn_remote_ip tmp; | |
6351 | struct prefix *p; | |
6352 | ||
dc6cef73 AD |
6353 | if (!evpn_resolve_overlay_index()) |
6354 | return false; | |
6355 | ||
021b6596 AD |
6356 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
6357 | return false; | |
6358 | ||
6359 | bgp_evpn = bgp_get_evpn(); | |
6360 | if (!bgp_evpn) | |
6361 | return false; | |
6362 | ||
6363 | /* | |
6364 | * Gateway IP is resolved by nht over SVI interface. | |
6365 | * Use this SVI to find corresponding EVI(L2 context) | |
6366 | */ | |
6367 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
6368 | if (!vpn) | |
6369 | return false; | |
6370 | ||
6371 | if (vpn->bgp_vrf != bnc->bgp) | |
6372 | return false; | |
6373 | ||
6374 | /* | |
6375 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
6376 | * which stores all the remote IP addresses received via MAC/IP routes | |
6377 | * in this EVI | |
6378 | */ | |
6006b807 | 6379 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
6380 | |
6381 | p = &bnc->prefix; | |
6382 | if (p->family == AF_INET) { | |
6383 | tmp.addr.ipa_type = IPADDR_V4; | |
6384 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
6385 | sizeof(struct in_addr)); | |
6386 | } else if (p->family == AF_INET6) { | |
6387 | tmp.addr.ipa_type = IPADDR_V6; | |
6388 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
6389 | sizeof(struct in6_addr)); | |
6390 | } else | |
6391 | return false; | |
6392 | ||
6393 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
6394 | return false; | |
6395 | ||
6396 | return true; | |
6397 | } | |
6398 | ||
6399 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
6400 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
6401 | struct ipaddr *addr, | |
6402 | bool resolve) | |
6403 | { | |
6404 | afi_t afi; | |
6405 | struct prefix p; | |
6406 | struct bgp_nexthop_cache *bnc; | |
6407 | struct bgp_nexthop_cache_head *tree = NULL; | |
6408 | ||
6409 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
6410 | return; | |
6411 | ||
6006b807 | 6412 | memset(&p, 0, sizeof(p)); |
021b6596 AD |
6413 | |
6414 | if (addr->ipa_type == IPADDR_V4) { | |
6415 | afi = AFI_IP; | |
6416 | p.family = AF_INET; | |
6417 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
6418 | sizeof(struct in_addr)); | |
6419 | p.prefixlen = IPV4_MAX_BITLEN; | |
6420 | } else if (addr->ipa_type == IPADDR_V6) { | |
6421 | afi = AFI_IP6; | |
6422 | p.family = AF_INET6; | |
6423 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
6424 | sizeof(struct in6_addr)); | |
6425 | p.prefixlen = IPV6_MAX_BITLEN; | |
6426 | } else | |
6427 | return; | |
6428 | ||
6429 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
6430 | bnc = bnc_find(tree, &p, 0); | |
6431 | ||
6432 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
6433 | return; | |
6434 | ||
6435 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
6436 | return; | |
6437 | ||
6438 | if (BGP_DEBUG(nht, NHT)) { | |
6439 | char buf[PREFIX2STR_BUFFER]; | |
6440 | ||
6441 | prefix2str(&bnc->prefix, buf, sizeof(buf)); | |
6442 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %s", | |
6443 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, | |
6444 | vpn->vni, (resolve ? "add" : "delete"), buf); | |
6445 | } | |
6446 | ||
6447 | /* | |
6448 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
6449 | * Set nexthop as valid only if it is already L3 reachable | |
6450 | */ | |
6451 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
6452 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6453 | bnc->flags |= BGP_NEXTHOP_VALID; | |
6454 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6455 | evaluate_paths(bnc); | |
6456 | } | |
6457 | ||
6458 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
6459 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
6460 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
6461 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6462 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6463 | evaluate_paths(bnc); | |
6464 | } | |
6465 | } | |
6466 | ||
dc6cef73 AD |
6467 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
6468 | void *arg) | |
6469 | { | |
6470 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6471 | struct bgp_dest *dest; | |
6472 | struct bgp_path_info *pi; | |
6473 | ||
6474 | bgp_evpn_remote_ip_hash_init(vpn); | |
6475 | ||
6476 | for (dest = bgp_table_top(vpn->route_table); dest; | |
6477 | dest = bgp_route_next(dest)) | |
6478 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6479 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
6480 | } | |
6481 | ||
6482 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
6483 | void *arg) | |
6484 | { | |
6485 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6486 | ||
6487 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
6488 | } |