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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" |
128ea8ab | 57 | |
58 | /* | |
59 | * Definitions and external declarations. | |
60 | */ | |
96244aca DL |
61 | DEFINE_QOBJ_TYPE(bgpevpn); |
62 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 63 | |
64 | ||
65 | /* | |
66 | * Static function declarations | |
67 | */ | |
d62a17ae | 68 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
021b6596 AD |
69 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *evpn); |
70 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *evpn); | |
71 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
72 | struct bgp_path_info *pi); | |
73 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
74 | struct bgp_path_info *pi); | |
dc6cef73 AD |
75 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
76 | void (*func)(struct hash_bucket *, | |
77 | void *), | |
78 | void *arg); | |
021b6596 AD |
79 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn); |
80 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
81 | struct bgpevpn *vpn); | |
82 | static unsigned int vni_svi_hash_key_make(const void *p); | |
83 | static bool vni_svi_hash_cmp(const void *p1, const void *p2); | |
84 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
85 | struct ipaddr *addr, | |
86 | bool resolve); | |
87 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
88 | void *args); | |
89 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
90 | void *args); | |
9c7edc03 | 91 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 92 | |
93 | /* | |
94 | * Private functions. | |
95 | */ | |
96 | ||
97 | /* | |
98 | * Make vni hash key. | |
99 | */ | |
d8b87afe | 100 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 101 | { |
d8b87afe | 102 | const struct bgpevpn *vpn = p; |
d62a17ae | 103 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 104 | } |
105 | ||
106 | /* | |
107 | * Comparison function for vni hash | |
108 | */ | |
74df8d6d | 109 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 110 | { |
d62a17ae | 111 | const struct bgpevpn *vpn1 = p1; |
112 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 113 | |
d62a17ae | 114 | if (!vpn1 && !vpn2) |
74df8d6d | 115 | return true; |
d62a17ae | 116 | if (!vpn1 || !vpn2) |
74df8d6d | 117 | return false; |
d62a17ae | 118 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 119 | } |
120 | ||
c44ab6f1 | 121 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
122 | { |
123 | const struct bgpevpn *vpn1 = p1; | |
124 | const struct bgpevpn *vpn2 = p2; | |
125 | ||
126 | return vpn1->vni - vpn2->vni; | |
127 | } | |
128 | ||
10ebe1ab MK |
129 | /* |
130 | * Make vrf import route target hash key. | |
131 | */ | |
d8b87afe | 132 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 133 | { |
d8b87afe QY |
134 | const struct vrf_irt_node *irt = p; |
135 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
136 | |
137 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
138 | } |
139 | ||
140 | /* | |
141 | * Comparison function for vrf import rt hash | |
142 | */ | |
74df8d6d | 143 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
144 | { |
145 | const struct vrf_irt_node *irt1 = p1; | |
146 | const struct vrf_irt_node *irt2 = p2; | |
147 | ||
148 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 149 | return true; |
10ebe1ab MK |
150 | |
151 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 152 | return false; |
10ebe1ab MK |
153 | |
154 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
155 | } | |
156 | ||
157 | /* | |
f9b8094e | 158 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
159 | */ |
160 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
161 | { | |
5e53dce3 | 162 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
163 | struct vrf_irt_node *irt; |
164 | ||
5e53dce3 T |
165 | bgp_evpn = bgp_get_evpn(); |
166 | if (!bgp_evpn) { | |
e50f7cfd | 167 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 168 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
169 | return NULL; |
170 | } | |
171 | ||
172 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
173 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
174 | |
175 | irt->rt = *rt; | |
176 | irt->vrfs = list_new(); | |
177 | ||
178 | /* Add to hash */ | |
5e53dce3 | 179 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
180 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
181 | return NULL; | |
182 | } | |
183 | ||
184 | return irt; | |
185 | } | |
186 | ||
187 | /* | |
188 | * Free the vrf import rt node | |
189 | */ | |
190 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
191 | { | |
5e53dce3 | 192 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 193 | |
5e53dce3 T |
194 | bgp_evpn = bgp_get_evpn(); |
195 | if (!bgp_evpn) { | |
e50f7cfd | 196 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 197 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
198 | return; |
199 | } | |
200 | ||
5e53dce3 | 201 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 202 | list_delete(&irt->vrfs); |
10ebe1ab MK |
203 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
204 | } | |
205 | ||
206 | /* | |
207 | * Function to lookup Import RT node - used to map a RT to set of | |
208 | * VNIs importing routes with that RT. | |
209 | */ | |
210 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
211 | { | |
5e53dce3 | 212 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
213 | struct vrf_irt_node *irt; |
214 | struct vrf_irt_node tmp; | |
215 | ||
5e53dce3 T |
216 | bgp_evpn = bgp_get_evpn(); |
217 | if (!bgp_evpn) { | |
f9b8094e T |
218 | flog_err( |
219 | EC_BGP_NO_DFLT, | |
220 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
221 | return NULL; |
222 | } | |
223 | ||
224 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
225 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 226 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
227 | return irt; |
228 | } | |
229 | ||
230 | /* | |
231 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
232 | */ | |
996c9314 | 233 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
234 | { |
235 | struct listnode *node = NULL, *nnode = NULL; | |
236 | struct bgp *tmp_bgp_vrf = NULL; | |
237 | ||
238 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
239 | if (tmp_bgp_vrf == bgp_vrf) | |
240 | return 1; | |
241 | } | |
242 | return 0; | |
243 | } | |
244 | ||
14c1a7bf | 245 | /* |
246 | * Make import route target hash key. | |
247 | */ | |
d8b87afe | 248 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 249 | { |
d8b87afe QY |
250 | const struct irt_node *irt = p; |
251 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
252 | |
253 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 254 | } |
255 | ||
256 | /* | |
257 | * Comparison function for import rt hash | |
258 | */ | |
74df8d6d | 259 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 260 | { |
d62a17ae | 261 | const struct irt_node *irt1 = p1; |
262 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 263 | |
d62a17ae | 264 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 265 | return true; |
14c1a7bf | 266 | |
d62a17ae | 267 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 268 | return false; |
14c1a7bf | 269 | |
d62a17ae | 270 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 271 | } |
272 | ||
7724c0a1 | 273 | /* |
128ea8ab | 274 | * Create a new import_rt |
275 | */ | |
d62a17ae | 276 | static struct irt_node *import_rt_new(struct bgp *bgp, |
277 | struct ecommunity_val *rt) | |
128ea8ab | 278 | { |
d62a17ae | 279 | struct irt_node *irt; |
128ea8ab | 280 | |
d62a17ae | 281 | if (!bgp) |
282 | return NULL; | |
128ea8ab | 283 | |
d62a17ae | 284 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 285 | |
d62a17ae | 286 | irt->rt = *rt; |
287 | irt->vnis = list_new(); | |
128ea8ab | 288 | |
d62a17ae | 289 | /* Add to hash */ |
290 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
291 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
292 | return NULL; | |
293 | } | |
128ea8ab | 294 | |
d62a17ae | 295 | return irt; |
128ea8ab | 296 | } |
297 | ||
298 | /* | |
299 | * Free the import rt node | |
7724c0a1 | 300 | */ |
d62a17ae | 301 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 302 | { |
d62a17ae | 303 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 304 | list_delete(&irt->vnis); |
d62a17ae | 305 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 306 | } |
307 | ||
14c1a7bf | 308 | /* |
128ea8ab | 309 | * Function to lookup Import RT node - used to map a RT to set of |
310 | * VNIs importing routes with that RT. | |
311 | */ | |
d62a17ae | 312 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
313 | struct ecommunity_val *rt) | |
128ea8ab | 314 | { |
d62a17ae | 315 | struct irt_node *irt; |
316 | struct irt_node tmp; | |
128ea8ab | 317 | |
d62a17ae | 318 | memset(&tmp, 0, sizeof(struct irt_node)); |
319 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
320 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
321 | return irt; | |
128ea8ab | 322 | } |
323 | ||
324 | /* | |
325 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
326 | */ | |
d62a17ae | 327 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 328 | { |
d62a17ae | 329 | struct listnode *node, *nnode; |
330 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 331 | |
d62a17ae | 332 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
333 | if (tmp_vpn == vpn) | |
334 | return 1; | |
335 | } | |
128ea8ab | 336 | |
d62a17ae | 337 | return 0; |
128ea8ab | 338 | } |
339 | ||
340 | /* | |
341 | * Compare Route Targets. | |
342 | */ | |
d62a17ae | 343 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
344 | struct ecommunity *ecom2) | |
128ea8ab | 345 | { |
d62a17ae | 346 | if (ecom1 && !ecom2) |
347 | return -1; | |
128ea8ab | 348 | |
d62a17ae | 349 | if (!ecom1 && ecom2) |
350 | return 1; | |
128ea8ab | 351 | |
d62a17ae | 352 | if (!ecom1 && !ecom2) |
353 | return 0; | |
128ea8ab | 354 | |
d62a17ae | 355 | if (ecom1->str && !ecom2->str) |
356 | return -1; | |
128ea8ab | 357 | |
d62a17ae | 358 | if (!ecom1->str && ecom2->str) |
359 | return 1; | |
128ea8ab | 360 | |
d62a17ae | 361 | if (!ecom1->str && !ecom2->str) |
362 | return 0; | |
128ea8ab | 363 | |
d62a17ae | 364 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 365 | } |
366 | ||
987d8198 DS |
367 | static void evpn_xxport_delete_ecomm(void *val) |
368 | { | |
369 | struct ecommunity *ecomm = val; | |
370 | ecommunity_free(&ecomm); | |
371 | } | |
372 | ||
128ea8ab | 373 | /* |
374 | * Mask off global-admin field of specified extended community (RT), | |
375 | * just retain the local-admin field. | |
376 | */ | |
d62a17ae | 377 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
378 | struct ecommunity_val *src) | |
128ea8ab | 379 | { |
d7c0a89a | 380 | uint8_t type; |
128ea8ab | 381 | |
d62a17ae | 382 | type = src->val[0]; |
383 | dst->val[0] = 0; | |
384 | if (type == ECOMMUNITY_ENCODE_AS) { | |
385 | dst->val[2] = dst->val[3] = 0; | |
386 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
387 | || type == ECOMMUNITY_ENCODE_IP) { | |
388 | dst->val[2] = dst->val[3] = 0; | |
389 | dst->val[4] = dst->val[5] = 0; | |
390 | } | |
128ea8ab | 391 | } |
392 | ||
10ebe1ab MK |
393 | /* |
394 | * Map one RT to specified VRF. | |
395 | * bgp_vrf = BGP vrf instance | |
396 | */ | |
996c9314 | 397 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
398 | { |
399 | struct vrf_irt_node *irt = NULL; | |
400 | struct ecommunity_val eval_tmp; | |
401 | ||
402 | /* If using "automatic" RT, | |
403 | * we only care about the local-admin sub-field. | |
404 | * This is to facilitate using L3VNI(VRF-VNI) | |
405 | * as the RT for EBGP peering too. | |
406 | */ | |
407 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 408 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
409 | mask_ecom_global_admin(&eval_tmp, eval); |
410 | ||
411 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
412 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
413 | /* Already mapped. */ | |
414 | return; | |
10ebe1ab | 415 | |
e066d6d0 | 416 | if (!irt) |
10ebe1ab | 417 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
418 | |
419 | /* Add VRF to the list for this RT. */ | |
420 | listnode_add(irt->vrfs, bgp_vrf); | |
421 | } | |
422 | ||
423 | /* | |
424 | * Unmap specified VRF from specified RT. If there are no other | |
425 | * VRFs for this RT, then the RT hash is deleted. | |
426 | * bgp_vrf: BGP VRF specific instance | |
427 | */ | |
996c9314 | 428 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
429 | { |
430 | /* Delete VRF from list for this RT. */ | |
431 | listnode_delete(irt->vrfs, bgp_vrf); | |
432 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
433 | vrf_import_rt_free(irt); |
434 | } | |
435 | } | |
436 | ||
128ea8ab | 437 | /* |
438 | * Map one RT to specified VNI. | |
14c1a7bf | 439 | */ |
d62a17ae | 440 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
441 | struct ecommunity_val *eval) | |
128ea8ab | 442 | { |
d62a17ae | 443 | struct irt_node *irt; |
444 | struct ecommunity_val eval_tmp; | |
128ea8ab | 445 | |
d62a17ae | 446 | /* If using "automatic" RT, we only care about the local-admin |
447 | * sub-field. | |
448 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
449 | */ | |
450 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
451 | if (!is_import_rt_configured(vpn)) | |
452 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 453 | |
d62a17ae | 454 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 455 | if (irt) |
d62a17ae | 456 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
457 | /* Already mapped. */ | |
458 | return; | |
128ea8ab | 459 | |
d62a17ae | 460 | if (!irt) { |
461 | irt = import_rt_new(bgp, &eval_tmp); | |
462 | assert(irt); | |
463 | } | |
128ea8ab | 464 | |
d62a17ae | 465 | /* Add VNI to the hash list for this RT. */ |
466 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 467 | } |
468 | ||
469 | /* | |
470 | * Unmap specified VNI from specified RT. If there are no other | |
471 | * VNIs for this RT, then the RT hash is deleted. | |
472 | */ | |
d62a17ae | 473 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
474 | struct irt_node *irt) | |
14c1a7bf | 475 | { |
d62a17ae | 476 | /* Delete VNI from hash list for this RT. */ |
477 | listnode_delete(irt->vnis, vpn); | |
478 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 479 | import_rt_free(bgp, irt); |
480 | } | |
14c1a7bf | 481 | } |
482 | ||
0ca10580 | 483 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 484 | const struct prefix_evpn *p, |
0ca10580 CS |
485 | struct attr *attr, uint8_t flags) |
486 | { | |
487 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
488 | ||
489 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
490 | if (!bgp_vrf) | |
491 | return; | |
492 | ||
b96cafa3 CS |
493 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
494 | return; | |
495 | ||
496 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
497 | * in case of route is self MAC-IP, | |
498 | * advertise-pip and advertise-svi-ip features | |
499 | * are enabled. | |
500 | * Otherwise, for all host MAC-IP route's | |
27727001 | 501 | * copy anycast RMAC. |
b96cafa3 CS |
502 | */ |
503 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
504 | && bgp_vrf->evpn_info->advertise_pip && | |
505 | bgp_vrf->evpn_info->is_anycast_mac) { | |
506 | /* copy sys rmac */ | |
507 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
508 | ETH_ALEN); | |
509 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
510 | attr->mp_nexthop_global_in = | |
511 | bgp_vrf->evpn_info->pip_ip; | |
512 | } else | |
513 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 514 | } |
b96cafa3 | 515 | |
128ea8ab | 516 | /* |
517 | * Create RT extended community automatically from passed information: | |
518 | * of the form AS:VNI. | |
519 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
520 | * the need is to get a RT value that will be unique across different | |
521 | * VNIs but the same across routers (in the same AS) for a particular | |
522 | * VNI. | |
523 | */ | |
c581d8b0 | 524 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 525 | { |
d62a17ae | 526 | struct ecommunity_val eval; |
b90d4580 CS |
527 | struct ecommunity *ecomadd, *ecom; |
528 | bool ecom_found = false; | |
529 | struct listnode *node; | |
128ea8ab | 530 | |
bf1061d8 VB |
531 | if (bgp->advertise_autort_rfc8365) |
532 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 533 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 534 | |
d62a17ae | 535 | ecomadd = ecommunity_new(); |
1207a5bc | 536 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
537 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
538 | if (ecommunity_cmp(ecomadd, ecom)) | |
539 | ecom_found = true; | |
540 | ||
541 | if (!ecom_found) | |
542 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
543 | else |
544 | ecommunity_free(&ecomadd); | |
128ea8ab | 545 | } |
14c1a7bf | 546 | |
547 | /* | |
128ea8ab | 548 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
549 | * creation of a VNI. | |
550 | */ | |
d62a17ae | 551 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 552 | { |
d62a17ae | 553 | bgp_evpn_derive_auto_rd(bgp, vpn); |
554 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
555 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 556 | } |
557 | ||
1ec31309 | 558 | /* |
559 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
560 | */ | |
561 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
562 | { | |
563 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
564 | return; | |
565 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
566 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
567 | } | |
568 | ||
09319b4e DS |
569 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
570 | safi_t safi, | |
571 | const struct prefix_evpn *evp, | |
572 | struct prefix_rd *prd) | |
c44ab6f1 AK |
573 | { |
574 | struct prefix_evpn global_p; | |
575 | ||
576 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
577 | /* prefix in the global table doesn't include the VTEP-IP so | |
578 | * we need to create a different copy of the prefix | |
579 | */ | |
580 | evpn_type1_prefix_global_copy(&global_p, evp); | |
581 | evp = &global_p; | |
582 | } | |
583 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
584 | } | |
585 | ||
09319b4e DS |
586 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
587 | safi_t safi, | |
588 | const struct prefix_evpn *evp, | |
589 | struct prefix_rd *prd) | |
c44ab6f1 AK |
590 | { |
591 | struct prefix_evpn global_p; | |
592 | ||
593 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
594 | /* prefix in the global table doesn't include the VTEP-IP so | |
595 | * we need to create a different copy of the prefix | |
596 | */ | |
597 | evpn_type1_prefix_global_copy(&global_p, evp); | |
598 | evp = &global_p; | |
599 | } | |
600 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
601 | } | |
602 | ||
128ea8ab | 603 | /* |
604 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 605 | */ |
d62a17ae | 606 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 607 | const struct prefix_evpn *p, |
d62a17ae | 608 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 609 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 610 | { |
611 | struct stream *s; | |
0ffd0fb5 | 612 | uint16_t ipa_len; |
c44ab6f1 | 613 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 614 | |
615 | /* Check socket. */ | |
616 | if (!zclient || zclient->sock < 0) | |
617 | return 0; | |
618 | ||
619 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
620 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
621 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
622 | zlog_debug( |
623 | "%s: No zebra instance to talk to, not installing remote macip", | |
624 | __func__); | |
d62a17ae | 625 | return 0; |
bb4ef1ae | 626 | } |
c44ab6f1 AK |
627 | |
628 | if (!esi) | |
629 | esi = zero_esi; | |
d62a17ae | 630 | s = zclient->obuf; |
631 | stream_reset(s); | |
632 | ||
996c9314 LB |
633 | zclient_create_header( |
634 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
635 | bgp->vrf_id); | |
d62a17ae | 636 | stream_putl(s, vpn->vni); |
3714a385 | 637 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 638 | /* IP address length and IP address, if any. */ |
3714a385 | 639 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 640 | stream_putw(s, 0); |
d62a17ae | 641 | else { |
3714a385 | 642 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 643 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 644 | stream_putw(s, ipa_len); |
3714a385 | 645 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 646 | } |
9c7edc03 AK |
647 | /* If the ESI is valid that becomes the nexthop; tape out the |
648 | * VTEP-IP for that case | |
c44ab6f1 | 649 | */ |
9c7edc03 | 650 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 651 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
652 | else |
653 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 654 | |
ead40654 | 655 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 656 | /* Also TX the sequence number of the best route. */ |
657 | if (add) { | |
ead40654 | 658 | stream_putc(s, flags); |
f07e1c99 | 659 | stream_putl(s, seq); |
c44ab6f1 | 660 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 661 | } |
d62a17ae | 662 | |
663 | stream_putw_at(s, 0, stream_get_endp(s)); | |
664 | ||
665 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 666 | zlog_debug( |
c0d72166 | 667 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4", |
996c9314 | 668 | add ? "ADD" : "DEL", vpn->vni, |
c0d72166 DS |
669 | &p->prefix.macip_addr.mac, &p->prefix.macip_addr.ip, |
670 | flags, seq, &remote_vtep_ip); | |
d62a17ae | 671 | |
672 | return zclient_send_message(zclient); | |
7ef5a232 | 673 | } |
b18825eb | 674 | |
128ea8ab | 675 | /* |
676 | * Add (update) or delete remote VTEP from zebra. | |
677 | */ | |
d62a17ae | 678 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
679 | const struct prefix_evpn *p, |
680 | int flood_control, int add) | |
128ea8ab | 681 | { |
d62a17ae | 682 | struct stream *s; |
128ea8ab | 683 | |
d62a17ae | 684 | /* Check socket. */ |
685 | if (!zclient || zclient->sock < 0) | |
686 | return 0; | |
128ea8ab | 687 | |
d62a17ae | 688 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
689 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
690 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
691 | zlog_debug( |
692 | "%s: No zebra instance to talk to, not installing remote vtep", | |
693 | __func__); | |
d62a17ae | 694 | return 0; |
bb4ef1ae | 695 | } |
128ea8ab | 696 | |
d62a17ae | 697 | s = zclient->obuf; |
698 | stream_reset(s); | |
128ea8ab | 699 | |
996c9314 LB |
700 | zclient_create_header( |
701 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
702 | bgp->vrf_id); | |
d62a17ae | 703 | stream_putl(s, vpn->vni); |
3714a385 | 704 | if (is_evpn_prefix_ipaddr_v4(p)) |
705 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
706 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 707 | flog_err( |
e50f7cfd | 708 | EC_BGP_VTEP_INVALID, |
d62a17ae | 709 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
710 | add ? "ADD" : "DEL", vpn->vni); | |
711 | return -1; | |
712 | } | |
b16dd019 | 713 | stream_putl(s, flood_control); |
128ea8ab | 714 | |
d62a17ae | 715 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 716 | |
d62a17ae | 717 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 718 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 719 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 720 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 721 | |
d62a17ae | 722 | return zclient_send_message(zclient); |
128ea8ab | 723 | } |
724 | ||
342dd0c6 | 725 | /* |
726 | * Build extended communities for EVPN prefix route. | |
727 | */ | |
728 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
729 | struct attr *attr) | |
730 | { | |
731 | struct ecommunity ecom_encap; | |
342dd0c6 | 732 | struct ecommunity_val eval; |
733 | struct ecommunity_val eval_rmac; | |
734 | bgp_encap_types tnl_type; | |
735 | struct listnode *node, *nnode; | |
736 | struct ecommunity *ecom; | |
fab92da7 | 737 | struct ecommunity *old_ecom; |
342dd0c6 | 738 | struct list *vrf_export_rtl = NULL; |
739 | ||
740 | /* Encap */ | |
741 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
742 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
743 | encode_encap_extcomm(tnl_type, &eval); | |
744 | ecom_encap.size = 1; | |
34540b0d | 745 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 746 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 747 | |
748 | /* Add Encap */ | |
fab92da7 | 749 | if (attr->ecommunity) { |
750 | old_ecom = attr->ecommunity; | |
751 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
752 | if (!old_ecom->refcnt) | |
753 | ecommunity_free(&old_ecom); | |
754 | } else | |
755 | ecom = ecommunity_dup(&ecom_encap); | |
756 | attr->ecommunity = ecom; | |
5bbd2cc1 | 757 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 758 | |
759 | /* Add the export RTs for L3VNI/VRF */ | |
760 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
761 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
762 | attr->ecommunity = | |
763 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 764 | |
765 | /* add the router mac extended community */ | |
766 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 767 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 768 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 769 | } |
770 | ||
771 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
772 | } | |
773 | ||
128ea8ab | 774 | /* |
1ec31309 | 775 | * Build extended communities for EVPN route. |
776 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
777 | * and ENCAP extended communities are applicable for all routes. | |
778 | * The default gateway extended community and MAC mobility (sticky) extended | |
779 | * community are added as needed based on passed settings - only for type-2 | |
780 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
781 | * added, if present, based on passed settings - only for non-link-local | |
782 | * type-2 routes. | |
128ea8ab | 783 | */ |
7ec156a9 | 784 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 785 | int add_l3_ecomm) |
128ea8ab | 786 | { |
d62a17ae | 787 | struct ecommunity ecom_encap; |
788 | struct ecommunity ecom_sticky; | |
ead40654 | 789 | struct ecommunity ecom_default_gw; |
68e33151 | 790 | struct ecommunity ecom_na; |
d62a17ae | 791 | struct ecommunity_val eval; |
792 | struct ecommunity_val eval_sticky; | |
ead40654 | 793 | struct ecommunity_val eval_default_gw; |
bc59a672 | 794 | struct ecommunity_val eval_rmac; |
68e33151 | 795 | struct ecommunity_val eval_na; |
9c7edc03 | 796 | bool proxy; |
68e33151 | 797 | |
d62a17ae | 798 | bgp_encap_types tnl_type; |
799 | struct listnode *node, *nnode; | |
800 | struct ecommunity *ecom; | |
d7c0a89a | 801 | uint32_t seqnum; |
7a3e76f1 | 802 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 803 | |
d62a17ae | 804 | /* Encap */ |
805 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
806 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
807 | encode_encap_extcomm(tnl_type, &eval); | |
808 | ecom_encap.size = 1; | |
34540b0d | 809 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 810 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 811 | |
d62a17ae | 812 | /* Add Encap */ |
813 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
5bbd2cc1 | 814 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 815 | |
7a3e76f1 | 816 | /* Add the export RTs for L2VNI */ |
d62a17ae | 817 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
818 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 819 | |
1ec31309 | 820 | /* Add the export RTs for L3VNI if told to - caller determines |
821 | * when this should be done. | |
523cafc4 | 822 | */ |
1ec31309 | 823 | if (add_l3_ecomm) { |
7ec156a9 MK |
824 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
825 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
826 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
827 | ecom)) | |
996c9314 LB |
828 | attr->ecommunity = ecommunity_merge( |
829 | attr->ecommunity, ecom); | |
7ec156a9 | 830 | } |
f1f8b53c | 831 | } |
7a3e76f1 | 832 | |
1ec31309 | 833 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 834 | if (attr->sticky) { |
835 | seqnum = 0; | |
836 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
837 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
838 | ecom_sticky.size = 1; | |
34540b0d | 839 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 840 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 841 | attr->ecommunity = |
842 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
843 | } | |
c85c03c7 | 844 | |
1ec31309 | 845 | /* Add RMAC, if told to. */ |
846 | if (add_l3_ecomm) { | |
bc59a672 | 847 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 848 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
849 | } |
850 | ||
1ec31309 | 851 | /* Add default gateway, if needed. */ |
ead40654 MK |
852 | if (attr->default_gw) { |
853 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
854 | encode_default_gw_extcomm(&eval_default_gw); | |
855 | ecom_default_gw.size = 1; | |
34540b0d | 856 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 857 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
996c9314 LB |
858 | attr->ecommunity = |
859 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
860 | } |
861 | ||
9c7edc03 AK |
862 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
863 | if (attr->router_flag || proxy) { | |
68e33151 | 864 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 865 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 866 | ecom_na.size = 1; |
34540b0d | 867 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 CS |
868 | ecom_na.val = (uint8_t *)eval_na.val; |
869 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
870 | &ecom_na); | |
871 | } | |
872 | ||
d62a17ae | 873 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 874 | } |
875 | ||
876 | /* | |
877 | * Add MAC mobility extended community to attribute. | |
878 | */ | |
d7c0a89a | 879 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 880 | { |
881 | struct ecommunity ecom_tmp; | |
882 | struct ecommunity_val eval; | |
d7c0a89a | 883 | uint8_t *ecom_val_ptr; |
f6e07e1b | 884 | uint32_t i; |
d7c0a89a | 885 | uint8_t *pnt; |
d62a17ae | 886 | int type = 0; |
887 | int sub_type = 0; | |
888 | ||
889 | /* Build MM */ | |
890 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
891 | ||
892 | /* Find current MM ecommunity */ | |
421bb26a | 893 | ecom_val_ptr = NULL; |
d62a17ae | 894 | |
895 | if (attr->ecommunity) { | |
896 | for (i = 0; i < attr->ecommunity->size; i++) { | |
4371bf91 PG |
897 | pnt = attr->ecommunity->val + |
898 | (i * attr->ecommunity->unit_size); | |
d62a17ae | 899 | type = *pnt++; |
900 | sub_type = *pnt++; | |
901 | ||
902 | if (type == ECOMMUNITY_ENCODE_EVPN | |
903 | && sub_type | |
904 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 905 | ecom_val_ptr = |
4371bf91 PG |
906 | (attr->ecommunity->val + |
907 | (i * attr->ecommunity->unit_size)); | |
d62a17ae | 908 | break; |
909 | } | |
910 | } | |
911 | } | |
912 | ||
913 | /* Update the existing MM ecommunity */ | |
421bb26a | 914 | if (ecom_val_ptr) { |
4371bf91 PG |
915 | memcpy(ecom_val_ptr, eval.val, sizeof(char) |
916 | * attr->ecommunity->unit_size); | |
d62a17ae | 917 | } |
918 | /* Add MM to existing */ | |
919 | else { | |
920 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
921 | ecom_tmp.size = 1; | |
34540b0d | 922 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 923 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 924 | |
f9a78910 DS |
925 | if (attr->ecommunity) |
926 | attr->ecommunity = | |
927 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
928 | else | |
929 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 930 | } |
128ea8ab | 931 | } |
932 | ||
933 | /* Install EVPN route into zebra. */ | |
d62a17ae | 934 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
935 | const struct prefix_evpn *p, |
936 | struct bgp_path_info *pi) | |
128ea8ab | 937 | { |
d62a17ae | 938 | int ret; |
d594a14c | 939 | uint8_t flags; |
b16dd019 | 940 | int flood_control; |
9c7edc03 | 941 | uint32_t seq; |
128ea8ab | 942 | |
d594a14c AK |
943 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
944 | flags = 0; | |
9c7edc03 AK |
945 | |
946 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
947 | if (pi->attr->sticky) | |
948 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
949 | if (pi->attr->default_gw) | |
950 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
951 | if (is_evpn_prefix_ipaddr_v6(p) && | |
952 | pi->attr->router_flag) | |
953 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
954 | ||
955 | seq = mac_mobility_seqnum(pi->attr); | |
956 | /* if local ES notify zebra that this is a sync path */ | |
957 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
958 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
959 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
960 | SET_FLAG(flags, | |
961 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
962 | } | |
963 | } else { | |
964 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
965 | return 0; | |
966 | ||
967 | /* if a local path is being turned around and sent | |
968 | * to zebra it is because it is a sync path on | |
969 | * a local ES | |
970 | */ | |
971 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
972 | /* supply the highest peer seq number to zebra | |
973 | * for MM seq syncing | |
974 | */ | |
975 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
976 | /* if any of the paths from the peer have the ROUTER | |
977 | * flag set install the local entry as a router entry | |
978 | */ | |
979 | if (is_evpn_prefix_ipaddr_v6(p) && | |
980 | (pi->attr->es_flags & | |
981 | ATTR_ES_PEER_ROUTER)) | |
982 | SET_FLAG(flags, | |
983 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
984 | ||
985 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
986 | SET_FLAG(flags, | |
987 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
988 | } | |
989 | ||
d594a14c | 990 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
991 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
992 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
993 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
994 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 995 | } else { |
2a3f51cf | 996 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
997 | case PMSI_TNLTYPE_INGR_REPL: |
998 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
999 | break; | |
1000 | ||
1001 | case PMSI_TNLTYPE_PIM_SM: | |
1002 | flood_control = VXLAN_FLOOD_PIM_SM; | |
1003 | break; | |
1004 | ||
1005 | default: | |
1006 | flood_control = VXLAN_FLOOD_DISABLED; | |
1007 | break; | |
1008 | } | |
1009 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1010 | } |
128ea8ab | 1011 | |
d62a17ae | 1012 | return ret; |
128ea8ab | 1013 | } |
1014 | ||
1015 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1016 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1017 | const struct prefix_evpn *p, |
d62a17ae | 1018 | struct in_addr remote_vtep_ip) |
128ea8ab | 1019 | { |
d62a17ae | 1020 | int ret; |
128ea8ab | 1021 | |
d62a17ae | 1022 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1023 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1024 | 0, 0, 0, NULL); |
1025 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1026 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1027 | else |
b16dd019 AK |
1028 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1029 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1030 | |
d62a17ae | 1031 | return ret; |
128ea8ab | 1032 | } |
1033 | ||
1034 | /* | |
1035 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1036 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1037 | * from peers. | |
1038 | */ | |
d62a17ae | 1039 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1040 | struct bgp_dest *dest, |
9c7edc03 AK |
1041 | struct bgp_path_info *old_local, |
1042 | struct bgp_path_info *new_select) | |
128ea8ab | 1043 | { |
9bcb3eef | 1044 | struct bgp_dest *global_dest; |
40381db7 | 1045 | struct bgp_path_info *pi; |
d62a17ae | 1046 | afi_t afi = AFI_L2VPN; |
1047 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1048 | |
9c7edc03 | 1049 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1050 | char esi_buf[ESI_STR_LEN]; |
1051 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1052 | struct prefix_evpn *evp = |
1053 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1054 | |
2dbe669b DA |
1055 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1056 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1057 | sizeof(esi_buf)), | |
1058 | new_select ? esi_to_str(&new_select->attr->esi, | |
1059 | esi_buf2, sizeof(esi_buf2)) | |
1060 | : ""); | |
9c7edc03 AK |
1061 | } |
1062 | ||
d62a17ae | 1063 | /* Locate route node in the global EVPN routing table. Note that |
1064 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1065 | * L3VPN routes. | |
1066 | */ | |
c44ab6f1 AK |
1067 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1068 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1069 | &vpn->prd); | |
9bcb3eef | 1070 | if (global_dest) { |
d62a17ae | 1071 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1072 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1073 | |
d62a17ae | 1074 | /* Schedule for processing - withdraws to peers happen from |
1075 | * this table. | |
1076 | */ | |
40381db7 | 1077 | if (pi) |
9bcb3eef DS |
1078 | bgp_process(bgp, global_dest, afi, safi); |
1079 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1080 | } |
128ea8ab | 1081 | |
d62a17ae | 1082 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1083 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1084 | } |
1085 | ||
1086 | /* | |
1087 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1088 | * if appropriate. | |
c44ab6f1 | 1089 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1090 | */ |
c44ab6f1 | 1091 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1092 | struct bgp_dest *dest) |
d62a17ae | 1093 | { |
4b7e6066 DS |
1094 | struct bgp_path_info *old_select, *new_select; |
1095 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1096 | afi_t afi = AFI_L2VPN; |
1097 | safi_t safi = SAFI_EVPN; | |
1098 | int ret = 0; | |
1099 | ||
1100 | /* Compute the best path. */ | |
9bcb3eef | 1101 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1102 | afi, safi); |
1103 | old_select = old_and_new.old; | |
1104 | new_select = old_and_new.new; | |
1105 | ||
1106 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1107 | * update to zebra RIB. |
1108 | * Remote routes and SYNC route (i.e. local routes with | |
1109 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1110 | * change. | |
d62a17ae | 1111 | */ |
1112 | if (old_select && old_select == new_select | |
1113 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1114 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1115 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1116 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1117 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1118 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1119 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1120 | ret = evpn_zebra_install( |
9bcb3eef DS |
1121 | bgp, vpn, |
1122 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1123 | dest), | |
d594a14c | 1124 | old_select); |
1defdda8 | 1125 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1126 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1127 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1128 | return ret; |
1129 | } | |
1130 | ||
1131 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1132 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1133 | |
1134 | /* bestpath has changed; update relevant fields and install or uninstall | |
1135 | * into the zebra RIB. | |
1136 | */ | |
1137 | if (old_select || new_select) | |
9bcb3eef | 1138 | bgp_bump_version(dest); |
d62a17ae | 1139 | |
1140 | if (old_select) | |
9bcb3eef | 1141 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1142 | if (new_select) { |
9bcb3eef DS |
1143 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1144 | bgp_path_info_unset_flag(dest, new_select, | |
1145 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1146 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1147 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1148 | } |
1149 | ||
9c7edc03 AK |
1150 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1151 | * to zebra | |
1152 | */ | |
d62a17ae | 1153 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1154 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1155 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1156 | ret = evpn_zebra_install( |
9bcb3eef DS |
1157 | bgp, vpn, |
1158 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1159 | new_select); |
d594a14c | 1160 | |
d62a17ae | 1161 | /* If an old best existed and it was a "local" route, the only |
1162 | * reason | |
1163 | * it would be supplanted is due to MAC mobility procedures. So, | |
1164 | * we | |
1165 | * need to do an implicit delete and withdraw that route from | |
1166 | * peers. | |
1167 | */ | |
9c7edc03 AK |
1168 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1169 | old_select && old_select->peer == bgp->peer_self | |
1170 | && old_select->type == ZEBRA_ROUTE_BGP | |
1171 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1172 | && vpn) | |
1173 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1174 | old_select, new_select); | |
d62a17ae | 1175 | } else { |
1176 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1177 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1178 | ret = evpn_zebra_uninstall( |
1179 | bgp, vpn, | |
9bcb3eef DS |
1180 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1181 | dest), | |
b54892e0 | 1182 | old_select->attr->nexthop); |
d62a17ae | 1183 | } |
1184 | ||
1185 | /* Clear any route change flags. */ | |
9bcb3eef | 1186 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1187 | |
18ee8310 | 1188 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1189 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1190 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1191 | |
1192 | return ret; | |
128ea8ab | 1193 | } |
1194 | ||
9c7edc03 AK |
1195 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1196 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1197 | { |
40381db7 | 1198 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1199 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1200 | |
9bcb3eef | 1201 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1202 | tmp_pi = tmp_pi->next) { |
1203 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1204 | local_pi = tmp_pi; |
9c7edc03 AK |
1205 | break; |
1206 | } | |
d62a17ae | 1207 | } |
c85c03c7 | 1208 | |
9c7edc03 | 1209 | return local_pi; |
c85c03c7 | 1210 | } |
1211 | ||
5e53dce3 | 1212 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1213 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1214 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1215 | struct attr *attr, int *route_changed) |
342dd0c6 | 1216 | { |
1217 | struct attr *attr_new = NULL; | |
40381db7 | 1218 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1219 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1220 | struct bgp_path_info *local_pi = NULL; |
1221 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1222 | |
5424b7ba | 1223 | *route_changed = 0; |
342dd0c6 | 1224 | /* locate the local route entry if any */ |
9bcb3eef | 1225 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1226 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1227 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1228 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1229 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1230 | local_pi = tmp_pi; | |
342dd0c6 | 1231 | } |
1232 | ||
2bb9eff4 | 1233 | /* |
0437e105 | 1234 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1235 | * Otherwise see if route attr has changed |
523cafc4 | 1236 | */ |
40381db7 | 1237 | if (!local_pi) { |
342dd0c6 | 1238 | |
5424b7ba MK |
1239 | /* route has changed as this is the first entry */ |
1240 | *route_changed = 1; | |
1241 | ||
342dd0c6 | 1242 | /* Add (or update) attribute to hash. */ |
1243 | attr_new = bgp_attr_intern(attr); | |
1244 | ||
1245 | /* create the route info from attribute */ | |
40381db7 | 1246 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1247 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1248 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1249 | |
b57ba6d2 | 1250 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1251 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1252 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1253 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1254 | pi->extra->num_labels = 1; | |
342dd0c6 | 1255 | |
1256 | /* add the route entry to route node*/ | |
9bcb3eef | 1257 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1258 | } else { |
1259 | ||
40381db7 DS |
1260 | tmp_pi = local_pi; |
1261 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1262 | |
1263 | /* attribute changed */ | |
1264 | *route_changed = 1; | |
1265 | ||
342dd0c6 | 1266 | /* The attribute has changed. */ |
1267 | /* Add (or update) attribute to hash. */ | |
1268 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1269 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1270 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1271 | |
1272 | /* Restore route, if needed. */ | |
40381db7 | 1273 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1274 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1275 | |
1276 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1277 | bgp_attr_unintern(&tmp_pi->attr); |
1278 | tmp_pi->attr = attr_new; | |
1279 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1280 | } |
1281 | } | |
1282 | return 0; | |
1283 | } | |
1284 | ||
1285 | /* update evpn type-5 route entry */ | |
996c9314 | 1286 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1287 | struct attr *src_attr, afi_t src_afi, |
1288 | safi_t src_safi) | |
342dd0c6 | 1289 | { |
1290 | afi_t afi = AFI_L2VPN; | |
1291 | safi_t safi = SAFI_EVPN; | |
1292 | struct attr attr; | |
9bcb3eef | 1293 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1294 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1295 | int route_changed = 0; |
342dd0c6 | 1296 | |
5e53dce3 T |
1297 | bgp_evpn = bgp_get_evpn(); |
1298 | if (!bgp_evpn) | |
faafdfa8 | 1299 | return 0; |
342dd0c6 | 1300 | |
2f69f6d3 | 1301 | /* Build path attribute for this route - use the source attr, if |
1302 | * present, else treat as locally originated. | |
1303 | */ | |
1304 | if (src_attr) | |
6f4f49b2 | 1305 | attr = *src_attr; |
2f69f6d3 | 1306 | else { |
1307 | memset(&attr, 0, sizeof(struct attr)); | |
1308 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1309 | } | |
5394a276 | 1310 | |
5394a276 CS |
1311 | /* Advertise Primary IP (PIP) is enabled, send individual |
1312 | * IP (default instance router-id) as nexthop. | |
1313 | * PIP is disabled or vrr interface is not present | |
27727001 | 1314 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1315 | */ |
1316 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1317 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1318 | attr.nexthop = bgp_vrf->originator_ip; | |
1319 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1320 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1321 | } else { |
27727001 CS |
1322 | /* copy sys rmac */ |
1323 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1324 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1325 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1326 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1327 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1328 | if (bgp_debug_zebra(NULL)) |
1329 | zlog_debug( | |
1330 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1331 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1332 | } |
1333 | ||
c0d72166 DS |
1334 | if (bgp_debug_zebra(NULL)) |
1335 | zlog_debug( | |
1336 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1337 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1338 | &attr.nexthop); | |
5394a276 | 1339 | |
342dd0c6 | 1340 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1341 | |
6c995628 AD |
1342 | if (src_afi == AFI_IP6 && |
1343 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1344 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1345 | if (src_attr && | |
1346 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1347 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
1348 | memcpy(&attr.evpn_overlay.gw_ip.ipv6, | |
1349 | &src_attr->mp_nexthop_global, | |
1350 | sizeof(struct in6_addr)); | |
1351 | } | |
1352 | } else if (src_afi == AFI_IP && | |
1353 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1354 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1355 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1356 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
1357 | memcpy(&attr.evpn_overlay.gw_ip.ipv4, | |
1358 | &src_attr->nexthop, sizeof(struct in_addr)); | |
1359 | } | |
1360 | } | |
1361 | ||
342dd0c6 | 1362 | /* Setup RT and encap extended community */ |
1363 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1364 | ||
1365 | /* get the route node in global table */ | |
c44ab6f1 AK |
1366 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1367 | (const struct prefix_evpn *)evp, | |
1368 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1369 | assert(dest); |
342dd0c6 | 1370 | |
1371 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1372 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1373 | &route_changed); |
342dd0c6 | 1374 | |
1375 | /* schedule for processing and unlock node */ | |
5424b7ba | 1376 | if (route_changed) { |
9bcb3eef DS |
1377 | bgp_process(bgp_evpn, dest, afi, safi); |
1378 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1379 | } |
342dd0c6 | 1380 | |
1381 | /* uninten temporary */ | |
5ee65f6f | 1382 | if (!src_attr) |
1383 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1384 | return 0; |
1385 | } | |
1386 | ||
9c7edc03 | 1387 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1388 | struct bgp_dest *dest, uint32_t loc_seq, |
1389 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1390 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1391 | { |
1392 | struct bgp_path_info *tmp_pi; | |
1393 | struct bgp_path_info *second_best_path = NULL; | |
1394 | uint32_t tmp_mm_seq = 0; | |
1395 | esi_t *tmp_esi; | |
1396 | int paths_eq; | |
1397 | ||
1398 | /* find the best non-local path. a local path can only be present | |
1399 | * as best path | |
1400 | */ | |
09319b4e DS |
1401 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1402 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1403 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1404 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1405 | continue; | |
1406 | ||
1407 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1408 | second_best_path, &paths_eq)) | |
1409 | second_best_path = tmp_pi; | |
1410 | } | |
1411 | ||
1412 | if (!second_best_path) | |
1413 | return; | |
1414 | ||
1415 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1416 | /* if this has the same ES desination as the local path | |
1417 | * it is a sync path | |
1418 | */ | |
1419 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1420 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1421 | if (tmp_mm_seq < loc_seq) | |
1422 | return; | |
1423 | ||
1424 | /* we have a non-proxy path from the ES peer. */ | |
1425 | if (second_best_path->attr->es_flags & | |
1426 | ATTR_ES_PROXY_ADVERT) { | |
1427 | *proxy_from_peer = true; | |
1428 | } else { | |
1429 | *active_on_peer = true; | |
1430 | } | |
1431 | ||
1432 | if (second_best_path->attr->router_flag) | |
1433 | *peer_router = true; | |
1434 | ||
1435 | /* we use both proxy and non-proxy imports to | |
1436 | * determine the max sync sequence | |
1437 | */ | |
1438 | if (tmp_mm_seq > *max_sync_seq) | |
1439 | *max_sync_seq = tmp_mm_seq; | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1444 | * This is need for MM sequence number syncing and proxy advertisement. | |
1445 | * Note: The local path can only exist as a best path in the | |
1446 | * VPN route table. It will take precedence over all sync paths. | |
1447 | */ | |
1448 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1449 | struct bgp_dest *dest, |
1450 | struct attr *attr, | |
1451 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1452 | { |
1453 | esi_t *esi; | |
752eed47 DS |
1454 | struct prefix_evpn *evp = |
1455 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1456 | |
1457 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1458 | return; | |
1459 | ||
1460 | esi = bgp_evpn_attr_get_esi(attr); | |
1461 | if (bgp_evpn_is_esi_valid(esi)) { | |
1462 | if (setup_sync) { | |
1463 | uint32_t max_sync_seq = 0; | |
1464 | bool active_on_peer = false; | |
1465 | bool peer_router = false; | |
1466 | bool proxy_from_peer = false; | |
1467 | ||
09319b4e DS |
1468 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1469 | &max_sync_seq, &active_on_peer, | |
1470 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1471 | attr->mm_sync_seqnum = max_sync_seq; |
1472 | if (active_on_peer) | |
1473 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1474 | else | |
1475 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1476 | if (proxy_from_peer) | |
1477 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1478 | else | |
1479 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1480 | if (peer_router) | |
1481 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1482 | else | |
1483 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1484 | ||
1485 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1486 | char esi_buf[ESI_STR_LEN]; |
1487 | ||
2dbe669b DA |
1488 | zlog_debug( |
1489 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1490 | evp, | |
9c7edc03 | 1491 | esi_to_str(esi, esi_buf, |
2dbe669b | 1492 | sizeof(esi_buf)), |
9c7edc03 | 1493 | max_sync_seq, |
2dbe669b DA |
1494 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1495 | ? "peer-active " | |
1496 | : "", | |
1497 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1498 | ? "peer-proxy " | |
1499 | : "", | |
1500 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1501 | ? "peer-router " | |
1502 | : ""); | |
9c7edc03 AK |
1503 | } |
1504 | } | |
1505 | } else { | |
1506 | attr->mm_sync_seqnum = 0; | |
1507 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1508 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1509 | } | |
1510 | } | |
1511 | ||
128ea8ab | 1512 | /* |
1513 | * Create or update EVPN route entry. This could be in the VNI route table | |
1514 | * or the global route table. | |
1515 | */ | |
d62a17ae | 1516 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1517 | afi_t afi, safi_t safi, |
1518 | struct bgp_dest *dest, struct attr *attr, | |
1519 | int add, struct bgp_path_info **pi, | |
1520 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1521 | bool *old_is_sync) |
d62a17ae | 1522 | { |
40381db7 DS |
1523 | struct bgp_path_info *tmp_pi; |
1524 | struct bgp_path_info *local_pi; | |
d62a17ae | 1525 | struct attr *attr_new; |
b57ba6d2 | 1526 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1527 | uint32_t num_labels = 1; |
d62a17ae | 1528 | int route_change = 1; |
d7c0a89a | 1529 | uint8_t sticky = 0; |
b54892e0 | 1530 | const struct prefix_evpn *evp; |
d62a17ae | 1531 | |
40381db7 | 1532 | *pi = NULL; |
9bcb3eef | 1533 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1534 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1535 | |
f07e1c99 | 1536 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1537 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1538 | |
1539 | /* If route doesn't exist already, create a new one, if told to. | |
1540 | * Otherwise act based on whether the attributes of the route have | |
1541 | * changed or not. | |
1542 | */ | |
40381db7 | 1543 | if (!local_pi && !add) |
d62a17ae | 1544 | return 0; |
1545 | ||
9c7edc03 AK |
1546 | if (old_is_sync && local_pi) |
1547 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1548 | ||
1549 | /* if a local path is being added with a non-zero esi look | |
1550 | * for SYNC paths from ES peers and bubble up the sync-info | |
1551 | */ | |
26c03e43 | 1552 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1553 | |
f07e1c99 | 1554 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1555 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1556 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1557 | |
40381db7 | 1558 | if (!local_pi) { |
d62a17ae | 1559 | /* Add (or update) attribute to hash. */ |
1560 | attr_new = bgp_attr_intern(attr); | |
1561 | ||
1562 | /* Extract MAC mobility sequence number, if any. */ | |
1563 | attr_new->mm_seqnum = | |
1564 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1565 | attr_new->sticky = sticky; | |
1566 | ||
1567 | /* Create new route with its attribute. */ | |
40381db7 | 1568 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1569 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1570 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1571 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1572 | |
1573 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1574 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1575 | |
1576 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1577 | * Only attach second label if we are advertising two labels for | |
1578 | * type-2 routes. | |
1579 | */ | |
996c9314 LB |
1580 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1581 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1582 | vni_t l3vni; |
1583 | ||
1584 | l3vni = bgpevpn_get_l3vni(vpn); | |
1585 | if (l3vni) { | |
1586 | vni2label(l3vni, &label[1]); | |
1587 | num_labels++; | |
1588 | } | |
1589 | } | |
d62a17ae | 1590 | |
40381db7 DS |
1591 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1592 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1593 | /* Mark route as self type-2 route */ |
1594 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1595 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1596 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1597 | } else { |
40381db7 DS |
1598 | tmp_pi = local_pi; |
1599 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1600 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1601 | route_change = 0; |
1602 | else { | |
c48d9f5f MK |
1603 | /* |
1604 | * The attributes have changed, type-2 routes needs to | |
1605 | * be advertised with right labels. | |
1606 | */ | |
1607 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1608 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1609 | && CHECK_FLAG(vpn->flags, | |
1610 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1611 | vni_t l3vni; |
1612 | ||
1613 | l3vni = bgpevpn_get_l3vni(vpn); | |
1614 | if (l3vni) { | |
1615 | vni2label(l3vni, &label[1]); | |
1616 | num_labels++; | |
1617 | } | |
1618 | } | |
40381db7 DS |
1619 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1620 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1621 | |
d62a17ae | 1622 | /* The attribute has changed. */ |
1623 | /* Add (or update) attribute to hash. */ | |
1624 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1625 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1626 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1627 | |
f07e1c99 | 1628 | /* Extract MAC mobility sequence number, if any. */ |
1629 | attr_new->mm_seqnum = | |
1630 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1631 | attr_new->sticky = sticky; | |
1632 | ||
d62a17ae | 1633 | /* Restore route, if needed. */ |
40381db7 | 1634 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1635 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1636 | |
1637 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1638 | bgp_attr_unintern(&tmp_pi->attr); |
1639 | tmp_pi->attr = attr_new; | |
1640 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1641 | } |
1642 | } | |
1643 | ||
58bff4d1 AK |
1644 | /* local MAC-IP routes in the VNI table are linked to |
1645 | * the destination ES | |
26c03e43 AK |
1646 | */ |
1647 | if (route_change && vpn_rt | |
1648 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1649 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1650 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1651 | ||
d62a17ae | 1652 | /* Return back the route entry. */ |
40381db7 | 1653 | *pi = tmp_pi; |
d62a17ae | 1654 | return route_change; |
128ea8ab | 1655 | } |
1656 | ||
ec0ab544 | 1657 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1658 | struct bgpevpn *vpn, |
1659 | struct bgp_dest *dest) | |
ec0ab544 AK |
1660 | { |
1661 | struct bgp_path_info *tmp_ri; | |
1662 | struct bgp_path_info *curr_select = NULL; | |
1663 | ||
9bcb3eef DS |
1664 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1665 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1666 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1667 | curr_select = tmp_ri; | |
1668 | break; | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1673 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1674 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1675 | evpn_zebra_install(bgp, vpn, | |
1676 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1677 | curr_select); | |
ec0ab544 AK |
1678 | } |
1679 | ||
6d8c603a AK |
1680 | /* |
1681 | * If the local route was not selected evict it and tell zebra to re-add | |
1682 | * the best remote dest. | |
1683 | * | |
1684 | * Typically a local path added by zebra is expected to be selected as | |
1685 | * best. In which case when a remote path wins as best (later) | |
1686 | * evpn_route_select_install itself evicts the older-local-best path. | |
1687 | * | |
1688 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1689 | * is possible that the local path is no longer the "older" best path. | |
1690 | * It is a path that was never designated as best and hence requires | |
1691 | * additional handling to prevent bgp from injecting and holding on to a | |
1692 | * non-best local path. | |
1693 | */ | |
1694 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1695 | struct bgpevpn *vpn, | |
9bcb3eef | 1696 | struct bgp_dest *dest, |
9a8897aa | 1697 | struct bgp_path_info *local_pi) |
6d8c603a | 1698 | { |
6d8c603a | 1699 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1700 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1701 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1702 | dest); |
b54892e0 | 1703 | |
9c7edc03 | 1704 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1705 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1706 | |
1707 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1708 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1709 | } |
1710 | ||
70524092 AK |
1711 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
1712 | const struct prefix_evpn *p, | |
1713 | esi_t *esi) | |
1714 | { | |
1715 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
1716 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
1717 | || (is_evpn_prefix_ipaddr_v6(p) |
1718 | && !IN6_IS_ADDR_LINKLOCAL( | |
1719 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
1720 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
1721 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
1722 | } | |
1723 | ||
128ea8ab | 1724 | /* |
1725 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1726 | * and schedule for processing. | |
1727 | */ | |
d62a17ae | 1728 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1729 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1730 | uint32_t seq, esi_t *esi) |
128ea8ab | 1731 | { |
9bcb3eef | 1732 | struct bgp_dest *dest; |
d62a17ae | 1733 | struct attr attr; |
1734 | struct attr *attr_new; | |
1ec31309 | 1735 | int add_l3_ecomm = 0; |
40381db7 | 1736 | struct bgp_path_info *pi; |
d62a17ae | 1737 | afi_t afi = AFI_L2VPN; |
1738 | safi_t safi = SAFI_EVPN; | |
1739 | int route_change; | |
9c7edc03 | 1740 | bool old_is_sync = false; |
128ea8ab | 1741 | |
d62a17ae | 1742 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1743 | |
d62a17ae | 1744 | /* Build path-attribute for this route. */ |
1745 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1746 | attr.nexthop = vpn->originator_ip; | |
1747 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1748 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1749 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1750 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1751 | attr.router_flag = CHECK_FLAG(flags, |
1752 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1753 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1754 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1755 | ||
1756 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1757 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1758 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1759 | } | |
1760 | ||
be41eb68 | 1761 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1762 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1763 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1764 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1765 | } |
be41eb68 | 1766 | |
9c7edc03 | 1767 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
1768 | char buf3[ESI_STR_LEN]; |
1769 | ||
23d0a753 | 1770 | zlog_debug( |
c0d72166 | 1771 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
1772 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1773 | : " ", | |
c0d72166 | 1774 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 1775 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 1776 | } |
1ec31309 | 1777 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1778 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1779 | uint8_t af_flags = 0; | |
1780 | ||
1781 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1782 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1783 | ||
1784 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1785 | } |
1786 | ||
a21bd7a3 | 1787 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1788 | |
1ec31309 | 1789 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1790 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1791 | * these routes. | |
1792 | */ | |
70524092 AK |
1793 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
1794 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 1795 | |
1796 | /* Set up extended community. */ | |
1797 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1798 | |
d62a17ae | 1799 | /* First, create (or fetch) route node within the VNI. */ |
1800 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1801 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1802 | |
d62a17ae | 1803 | /* Create or update route entry. */ |
9bcb3eef | 1804 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1805 | 1, &pi, flags, seq, |
1806 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1807 | assert(pi); |
1808 | attr_new = pi->attr; | |
128ea8ab | 1809 | |
6d8c603a AK |
1810 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1811 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1812 | |
1813 | /* Perform route selection. Normally, the local route in the | |
1814 | * VNI is expected to win and be the best route. However, if | |
1815 | * there is a race condition where a host moved from local to | |
1816 | * remote and the remote route was received in BGP just prior | |
1817 | * to the local MACIP notification from zebra, the remote | |
1818 | * route would win, and we should evict the defunct local route | |
1819 | * and (re)install the remote route into zebra. | |
1820 | */ | |
9bcb3eef | 1821 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1822 | /* |
9a8897aa AK |
1823 | * If the new local route was not selected evict it and tell zebra |
1824 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1825 | * routes. | |
6d8c603a | 1826 | */ |
9c7edc03 | 1827 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1828 | route_change = 0; |
9c7edc03 AK |
1829 | } else { |
1830 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1831 | route_change = 0; | |
1832 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1833 | } else { | |
1834 | bool new_is_sync; | |
1835 | ||
1836 | /* If the local path already existed and is still the | |
1837 | * best path we need to also check if it transitioned | |
1838 | * from being a sync path to a non-sync path. If it | |
1839 | * it did we need to notify zebra that the sync-path | |
1840 | * has been removed. | |
1841 | */ | |
1842 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1843 | if (!new_is_sync && old_is_sync) | |
1844 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1845 | } | |
9a8897aa | 1846 | } |
6d8c603a AK |
1847 | bgp_path_info_unlock(pi); |
1848 | ||
9bcb3eef | 1849 | bgp_dest_unlock_node(dest); |
128ea8ab | 1850 | |
d62a17ae | 1851 | /* If this is a new route or some attribute has changed, export the |
1852 | * route to the global table. The route will be advertised to peers | |
1853 | * from there. Note that this table is a 2-level tree (RD-level + | |
1854 | * Prefix-level) similar to L3VPN routes. | |
1855 | */ | |
1856 | if (route_change) { | |
40381db7 | 1857 | struct bgp_path_info *global_pi; |
128ea8ab | 1858 | |
c44ab6f1 AK |
1859 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1860 | (const struct prefix_evpn *)p, | |
1861 | &vpn->prd); | |
9bcb3eef | 1862 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1863 | &global_pi, flags, seq, |
1864 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1865 | |
d62a17ae | 1866 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1867 | bgp_process(bgp, dest, afi, safi); |
1868 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1869 | } |
128ea8ab | 1870 | |
d62a17ae | 1871 | /* Unintern temporary. */ |
1872 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1873 | |
d62a17ae | 1874 | return 0; |
128ea8ab | 1875 | } |
1876 | ||
50f74cf1 | 1877 | /* |
1878 | * Delete EVPN route entry. | |
1879 | * The entry can be in ESI/VNI table or the global table. | |
1880 | */ | |
185fb14a | 1881 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1882 | struct bgp_dest *dest, |
40381db7 | 1883 | struct bgp_path_info **pi) |
342dd0c6 | 1884 | { |
40381db7 | 1885 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1886 | |
40381db7 | 1887 | *pi = NULL; |
342dd0c6 | 1888 | |
50f74cf1 | 1889 | /* Now, find matching route. */ |
9bcb3eef | 1890 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1891 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1892 | if (tmp_pi->peer == bgp->peer_self |
1893 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1894 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1895 | break; |
1896 | ||
40381db7 | 1897 | *pi = tmp_pi; |
342dd0c6 | 1898 | |
1899 | /* Mark route for delete. */ | |
40381db7 | 1900 | if (tmp_pi) |
9bcb3eef | 1901 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1902 | } |
1903 | ||
1904 | /* Delete EVPN type5 route */ | |
996c9314 | 1905 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1906 | { |
1907 | afi_t afi = AFI_L2VPN; | |
1908 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1909 | struct bgp_dest *dest = NULL; |
40381db7 | 1910 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1911 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1912 | |
5e53dce3 T |
1913 | bgp_evpn = bgp_get_evpn(); |
1914 | if (!bgp_evpn) | |
faafdfa8 | 1915 | return 0; |
342dd0c6 | 1916 | |
1917 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1918 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1919 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1920 | if (!dest) |
342dd0c6 | 1921 | return 0; |
1922 | ||
9bcb3eef | 1923 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1924 | if (pi) |
9bcb3eef DS |
1925 | bgp_process(bgp_evpn, dest, afi, safi); |
1926 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1927 | return 0; |
1928 | } | |
1929 | ||
128ea8ab | 1930 | /* |
1931 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1932 | * schedule for processing. | |
1933 | */ | |
d62a17ae | 1934 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1935 | struct prefix_evpn *p) | |
1936 | { | |
9bcb3eef | 1937 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1938 | struct bgp_path_info *pi; |
d62a17ae | 1939 | afi_t afi = AFI_L2VPN; |
1940 | safi_t safi = SAFI_EVPN; | |
1941 | ||
1942 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1943 | * there | |
1944 | * is nothing further to do. | |
1945 | */ | |
1946 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1947 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1948 | if (!dest) | |
d62a17ae | 1949 | return 0; |
1950 | ||
1951 | /* Next, locate route node in the global EVPN routing table. Note that | |
1952 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1953 | * L3VPN routes. | |
1954 | */ | |
c44ab6f1 AK |
1955 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1956 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1957 | if (global_dest) { |
d62a17ae | 1958 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1959 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1960 | |
1961 | /* Schedule for processing - withdraws to peers happen from | |
1962 | * this table. | |
1963 | */ | |
40381db7 | 1964 | if (pi) |
9bcb3eef DS |
1965 | bgp_process(bgp, global_dest, afi, safi); |
1966 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1967 | } |
1968 | ||
1969 | /* Delete route entry in the VNI route table. This can just be removed. | |
1970 | */ | |
9bcb3eef | 1971 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1972 | if (pi) { |
9bcb3eef DS |
1973 | bgp_path_info_reap(dest, pi); |
1974 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1975 | } |
9bcb3eef | 1976 | bgp_dest_unlock_node(dest); |
d62a17ae | 1977 | |
1978 | return 0; | |
128ea8ab | 1979 | } |
1980 | ||
70524092 AK |
1981 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1982 | struct bgp_dest *dest, | |
1983 | struct bgp_path_info *local_pi, | |
1984 | const char *caller) | |
9c7edc03 AK |
1985 | { |
1986 | afi_t afi = AFI_L2VPN; | |
1987 | safi_t safi = SAFI_EVPN; | |
1988 | struct bgp_path_info *pi; | |
1989 | struct attr attr; | |
1990 | struct attr *attr_new; | |
1991 | uint32_t seq; | |
1992 | int add_l3_ecomm = 0; | |
09319b4e | 1993 | struct bgp_dest *global_dest; |
9c7edc03 | 1994 | struct bgp_path_info *global_pi; |
752eed47 DS |
1995 | struct prefix_evpn *evp = |
1996 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1997 | int route_change; |
1998 | bool old_is_sync = false; | |
1999 | ||
2000 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
2001 | return; | |
2002 | ||
2003 | /* | |
2004 | * Build attribute per local route as the MAC mobility and | |
2005 | * some other values could differ for different routes. The | |
2006 | * attributes will be shared in the hash table. | |
2007 | */ | |
2008 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2009 | attr.nexthop = vpn->originator_ip; | |
2010 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2011 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2012 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2013 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2014 | attr.es_flags = local_pi->attr->es_flags; | |
2015 | if (local_pi->attr->default_gw) { | |
2016 | attr.default_gw = 1; | |
2017 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2018 | attr.router_flag = 1; | |
2019 | } | |
2020 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
2021 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
2022 | local_pi->extra->af_flags); | |
2023 | vni2label(vpn->vni, &(attr.label)); | |
2024 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2025 | * using L3 VNI for type-2 routes also. | |
2026 | */ | |
70524092 AK |
2027 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2028 | vpn, evp, | |
2029 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
9c7edc03 AK |
2030 | |
2031 | /* Set up extended community. */ | |
2032 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2033 | seq = mac_mobility_seqnum(local_pi->attr); | |
2034 | ||
2035 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2036 | char buf3[ESI_STR_LEN]; |
2037 | ||
23d0a753 | 2038 | zlog_debug( |
c0d72166 | 2039 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2040 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2041 | : " ", | |
c0d72166 | 2042 | vpn->vni, evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2043 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2044 | attr.es_flags, caller); | |
9c7edc03 AK |
2045 | } |
2046 | ||
2047 | /* Update the route entry. */ | |
09319b4e DS |
2048 | route_change = update_evpn_route_entry( |
2049 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2050 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2051 | |
2052 | assert(pi); | |
2053 | attr_new = pi->attr; | |
2054 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2055 | bgp_path_info_lock(pi); | |
2056 | ||
2057 | /* Perform route selection. Normally, the local route in the | |
2058 | * VNI is expected to win and be the best route. However, | |
2059 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2060 | * that causes best selection to be based on next hop), a | |
2061 | * remote route could win. If the local route is the best, | |
2062 | * ensure it is updated in the global EVPN route table and | |
2063 | * advertised to peers; otherwise, ensure it is evicted and | |
2064 | * (re)install the remote route into zebra. | |
2065 | */ | |
09319b4e | 2066 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2067 | |
2068 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2069 | route_change = 0; | |
2070 | } else { | |
2071 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2072 | route_change = 0; | |
09319b4e | 2073 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2074 | } else { |
2075 | bool new_is_sync; | |
2076 | ||
2077 | /* If the local path already existed and is still the | |
2078 | * best path we need to also check if it transitioned | |
2079 | * from being a sync path to a non-sync path. If it | |
2080 | * it did we need to notify zebra that the sync-path | |
2081 | * has been removed. | |
2082 | */ | |
2083 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2084 | if (!new_is_sync && old_is_sync) | |
2085 | evpn_zebra_uninstall(bgp, vpn, | |
2086 | evp, zero_vtep_ip); | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | ||
2091 | /* unlock pi */ | |
2092 | bgp_path_info_unlock(pi); | |
2093 | ||
2094 | if (route_change) { | |
2095 | /* Update route in global routing table. */ | |
09319b4e DS |
2096 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2097 | safi, evp, &vpn->prd); | |
2098 | assert(global_dest); | |
2099 | update_evpn_route_entry( | |
2100 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2101 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2102 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2103 | |
2104 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2105 | bgp_process(bgp, global_dest, afi, safi); |
2106 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2107 | } |
2108 | ||
2109 | /* Unintern temporary. */ | |
2110 | aspath_unintern(&attr.aspath); | |
2111 | } | |
2112 | ||
128ea8ab | 2113 | /* |
2114 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2115 | * be scheduled for advertise to peers. | |
2116 | */ | |
d62a17ae | 2117 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2118 | { | |
9bcb3eef | 2119 | struct bgp_dest *dest; |
9c7edc03 | 2120 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2121 | |
2122 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2123 | * routes updated, update corresponding entry in the global table too. | |
2124 | */ | |
9bcb3eef | 2125 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2126 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2127 | const struct prefix_evpn *evp = |
2128 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2129 | |
2130 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2131 | continue; | |
2132 | ||
f07e1c99 | 2133 | /* Identify local route. */ |
9bcb3eef | 2134 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2135 | tmp_pi = tmp_pi->next) { |
40381db7 | 2136 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2137 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2138 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2139 | break; |
7ec156a9 | 2140 | } |
d62a17ae | 2141 | |
40381db7 | 2142 | if (!tmp_pi) |
d62a17ae | 2143 | continue; |
2144 | ||
9c7edc03 AK |
2145 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2146 | __func__); | |
f07e1c99 | 2147 | } |
d62a17ae | 2148 | |
2149 | return 0; | |
128ea8ab | 2150 | } |
2151 | ||
2152 | /* | |
2153 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2154 | * global routing table. These are also scheduled for withdraw from peers. | |
2155 | */ | |
d62a17ae | 2156 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2157 | { |
d62a17ae | 2158 | afi_t afi; |
2159 | safi_t safi; | |
9bcb3eef | 2160 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2161 | struct bgp_table *table; |
40381db7 | 2162 | struct bgp_path_info *pi; |
128ea8ab | 2163 | |
d62a17ae | 2164 | afi = AFI_L2VPN; |
2165 | safi = SAFI_EVPN; | |
128ea8ab | 2166 | |
9bcb3eef DS |
2167 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2168 | (struct prefix *)&vpn->prd); | |
2169 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2170 | table = bgp_dest_get_bgp_table_info(rddest); | |
2171 | for (dest = bgp_table_top(table); dest; | |
2172 | dest = bgp_route_next(dest)) { | |
2173 | const struct prefix_evpn *evp = | |
2174 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2175 | dest); | |
128ea8ab | 2176 | |
d62a17ae | 2177 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2178 | continue; | |
128ea8ab | 2179 | |
9bcb3eef | 2180 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2181 | if (pi) |
9bcb3eef | 2182 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2183 | } |
2184 | } | |
128ea8ab | 2185 | |
d62a17ae | 2186 | /* Unlock RD node. */ |
9bcb3eef DS |
2187 | if (rddest) |
2188 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2189 | |
d62a17ae | 2190 | return 0; |
128ea8ab | 2191 | } |
2192 | ||
2193 | /* | |
2194 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2195 | * table as well as the per-VNI route table. | |
2196 | */ | |
d62a17ae | 2197 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2198 | { |
d62a17ae | 2199 | afi_t afi; |
2200 | safi_t safi; | |
9bcb3eef | 2201 | struct bgp_dest *dest; |
40381db7 | 2202 | struct bgp_path_info *pi; |
128ea8ab | 2203 | |
d62a17ae | 2204 | afi = AFI_L2VPN; |
2205 | safi = SAFI_EVPN; | |
128ea8ab | 2206 | |
d62a17ae | 2207 | /* First, walk the global route table for this VNI's type-2 local |
2208 | * routes. | |
2209 | * EVPN routes are a 2-level table, first get the RD table. | |
2210 | */ | |
2211 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2212 | |
d62a17ae | 2213 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2214 | for (dest = bgp_table_top(vpn->route_table); dest; |
2215 | dest = bgp_route_next(dest)) { | |
2216 | const struct prefix_evpn *evp = | |
2217 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2218 | |
d62a17ae | 2219 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2220 | continue; | |
128ea8ab | 2221 | |
9bcb3eef | 2222 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2223 | |
d62a17ae | 2224 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2225 | if (pi) |
9bcb3eef | 2226 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2227 | } |
128ea8ab | 2228 | |
d62a17ae | 2229 | return 0; |
128ea8ab | 2230 | } |
2231 | ||
2232 | /* | |
2233 | * Delete all routes in the per-VNI route table. | |
2234 | */ | |
d62a17ae | 2235 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2236 | { |
9bcb3eef | 2237 | struct bgp_dest *dest; |
40381db7 | 2238 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2239 | |
d62a17ae | 2240 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2241 | for (dest = bgp_table_top(vpn->route_table); dest; |
2242 | dest = bgp_route_next(dest)) { | |
2243 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2244 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2245 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2246 | bgp_path_info_delete(dest, pi); |
2247 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2248 | } |
2249 | } | |
128ea8ab | 2250 | |
d62a17ae | 2251 | return 0; |
128ea8ab | 2252 | } |
2253 | ||
833b8a50 AK |
2254 | /* BUM traffic flood mode per-l2-vni */ |
2255 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2256 | struct bgpevpn *vpn) | |
2257 | { | |
2258 | /* if flooding has been globally disabled per-vni mode is | |
2259 | * not relevant | |
2260 | */ | |
2261 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2262 | return VXLAN_FLOOD_DISABLED; | |
2263 | ||
2264 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2265 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2266 | return VXLAN_FLOOD_PIM_SM; | |
2267 | ||
2268 | /* default is ingress replication */ | |
2269 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2270 | } | |
2271 | ||
128ea8ab | 2272 | /* |
2273 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2274 | * export RT getting modified or change to tunnel IP. Note that these | |
2275 | * situations need the route in the per-VNI table as well as the global | |
2276 | * table to be updated (as attributes change). | |
2277 | */ | |
0ca10580 | 2278 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2279 | { |
d62a17ae | 2280 | int ret; |
2281 | struct prefix_evpn p; | |
128ea8ab | 2282 | |
9c49ac74 AD |
2283 | update_type1_routes_for_evi(bgp, vpn); |
2284 | ||
d62a17ae | 2285 | /* Update and advertise the type-3 route (only one) followed by the |
2286 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2287 | * |
2288 | * RT-3 only if doing head-end replication | |
d62a17ae | 2289 | */ |
833b8a50 AK |
2290 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2291 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2292 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2293 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2294 | if (ret) |
2295 | return ret; | |
2296 | } | |
128ea8ab | 2297 | |
d62a17ae | 2298 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2299 | } |
2300 | ||
2301 | /* | |
2302 | * Delete (and withdraw) local routes for specified VNI from the global | |
2303 | * table and per-VNI table. After this, remove all other routes from | |
2304 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2305 | * (advertise-all-vni) being disabled. | |
2306 | */ | |
d62a17ae | 2307 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2308 | { |
d62a17ae | 2309 | int ret; |
2310 | struct prefix_evpn p; | |
128ea8ab | 2311 | |
d62a17ae | 2312 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2313 | * followed by type-3 routes (only one) - for this VNI. | |
2314 | */ | |
2315 | ret = delete_all_type2_routes(bgp, vpn); | |
2316 | if (ret) | |
2317 | return ret; | |
128ea8ab | 2318 | |
d62a17ae | 2319 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2320 | ret = delete_evpn_route(bgp, vpn, &p); | |
2321 | if (ret) | |
2322 | return ret; | |
128ea8ab | 2323 | |
d62a17ae | 2324 | /* Delete all routes from the per-VNI table. */ |
2325 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2326 | } |
2327 | ||
76d07c7a AK |
2328 | /* |
2329 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2330 | * remove the type-3 route if any. A new type-3 route will be generated | |
2331 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2332 | */ | |
2333 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2334 | struct in_addr mcast_grp) | |
2335 | { | |
2336 | struct prefix_evpn p; | |
2337 | ||
2338 | vpn->mcast_grp = mcast_grp; | |
2339 | ||
2340 | if (is_vni_live(vpn)) { | |
2341 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2342 | delete_evpn_route(bgp, vpn, &p); | |
2343 | } | |
2344 | ||
2345 | return 0; | |
2346 | } | |
2347 | ||
128ea8ab | 2348 | /* |
d1911c26 | 2349 | * There is a tunnel endpoint IP address change for this VNI, delete |
2350 | * prior type-3 route (if needed) and update. | |
2351 | * Note: Route re-advertisement happens elsewhere after other processing | |
2352 | * other changes. | |
128ea8ab | 2353 | */ |
d62a17ae | 2354 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2355 | struct in_addr originator_ip) | |
128ea8ab | 2356 | { |
d62a17ae | 2357 | struct prefix_evpn p; |
128ea8ab | 2358 | |
ddd16ed5 MK |
2359 | /* If VNI is not live, we only need to update the originator ip */ |
2360 | if (!is_vni_live(vpn)) { | |
2361 | vpn->originator_ip = originator_ip; | |
2362 | return 0; | |
2363 | } | |
2364 | ||
db0e1937 MK |
2365 | /* Update the tunnel-ip hash */ |
2366 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2367 | bgp_tip_add(bgp, &originator_ip); | |
2368 | ||
2369 | /* filter routes as martian nexthop db has changed */ | |
2370 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2371 | ||
d62a17ae | 2372 | /* Need to withdraw type-3 route as the originator IP is part |
2373 | * of the key. | |
2374 | */ | |
2375 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2376 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2377 | |
d62a17ae | 2378 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2379 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2380 | return 0; |
185fb14a | 2381 | } |
50f74cf1 | 2382 | |
185fb14a AK |
2383 | static struct bgp_path_info * |
2384 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2385 | struct bgp_dest *dest, struct attr *attr) | |
2386 | { | |
2387 | struct attr *attr_new; | |
2388 | struct bgp_path_info *pi; | |
50f74cf1 | 2389 | |
185fb14a AK |
2390 | /* Add (or update) attribute to hash. */ |
2391 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2392 | |
185fb14a AK |
2393 | /* Create new route with its attribute. */ |
2394 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2395 | attr_new, dest); | |
2396 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2397 | bgp_path_info_extra_get(pi); | |
2398 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2399 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2400 | if (parent_pi->extra) { | |
2401 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2402 | sizeof(pi->extra->label)); | |
2403 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2404 | } |
185fb14a | 2405 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2406 | |
185fb14a | 2407 | return pi; |
50f74cf1 | 2408 | } |
2409 | ||
d3135ba3 | 2410 | /* |
2411 | * Install route entry into the VRF routing table and invoke route selection. | |
2412 | */ | |
2413 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2414 | const struct prefix_evpn *evp, |
40381db7 | 2415 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2416 | { |
9bcb3eef | 2417 | struct bgp_dest *dest; |
40381db7 | 2418 | struct bgp_path_info *pi; |
1ec31309 | 2419 | struct attr attr; |
d3135ba3 | 2420 | struct attr *attr_new; |
c4edf708 | 2421 | int ret = 0; |
d3135ba3 | 2422 | struct prefix p; |
2423 | struct prefix *pp = &p; | |
2424 | afi_t afi = 0; | |
2425 | safi_t safi = 0; | |
5f0c5ec8 | 2426 | bool new_pi = false; |
58bff4d1 AK |
2427 | bool use_l3nhg = false; |
2428 | bool is_l3nhg_active = false; | |
a2299aba | 2429 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2430 | |
2431 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2432 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2433 | |
2dbe669b | 2434 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2435 | zlog_debug( |
2dbe669b DA |
2436 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2437 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2438 | parent_pi->flags); | |
1eb88002 | 2439 | |
d3135ba3 | 2440 | /* Create (or fetch) route within the VRF. */ |
2441 | /* NOTE: There is no RD here. */ | |
3714a385 | 2442 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2443 | afi = AFI_IP; |
2444 | safi = SAFI_UNICAST; | |
9bcb3eef | 2445 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2446 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2447 | afi = AFI_IP6; |
2448 | safi = SAFI_UNICAST; | |
9bcb3eef | 2449 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2450 | } else |
2451 | return 0; | |
2452 | ||
1ec31309 | 2453 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2454 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2455 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2456 | * address for the rest of the code to flow through. In the case of IPv4, | |
2457 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2458 | */ |
6f4f49b2 | 2459 | attr = *parent_pi->attr; |
a2299aba AD |
2460 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2461 | if (afi == AFI_IP6) | |
2462 | evpn_convert_nexthop_to_ipv6(&attr); | |
2463 | else | |
2464 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
2465 | } else { | |
2466 | ||
2467 | /* | |
2468 | * If gateway IP overlay index is specified in the NLRI of | |
2469 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2470 | * for the prefix in the VRF | |
2471 | */ | |
2472 | if (bgp_debug_zebra(NULL)) { | |
2473 | zlog_debug( | |
2474 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2475 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2476 | buf1, sizeof(buf1)), pp, | |
2477 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2478 | } | |
2479 | ||
2480 | if (afi == AFI_IP6) { | |
2481 | memcpy(&attr.mp_nexthop_global, | |
2482 | &attr.evpn_overlay.gw_ip.ipv6, | |
2483 | sizeof(struct in6_addr)); | |
2484 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2485 | } else { | |
2486 | attr.nexthop = attr.evpn_overlay.gw_ip.ipv4; | |
2487 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
2488 | } | |
2489 | } | |
1ec31309 | 2490 | |
58bff4d1 AK |
2491 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2492 | &is_l3nhg_active, NULL); | |
2493 | if (use_l3nhg) | |
2494 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2495 | if (is_l3nhg_active) | |
2496 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2497 | ||
d3135ba3 | 2498 | /* Check if route entry is already present. */ |
9bcb3eef | 2499 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2500 | if (pi->extra |
2501 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2502 | break; |
2503 | ||
5f0c5ec8 | 2504 | if (!pi) { |
9bcb3eef | 2505 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2506 | new_pi = true; |
2507 | } else { | |
40381db7 DS |
2508 | if (attrhash_cmp(pi->attr, &attr) |
2509 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2510 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2511 | return 0; |
2512 | } | |
2513 | /* The attribute has changed. */ | |
2514 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2515 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2516 | |
2517 | /* Restore route, if needed. */ | |
40381db7 | 2518 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2519 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2520 | |
2521 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2522 | if ((afi == AFI_IP |
2523 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2524 | || (afi == AFI_IP6 | |
2525 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2526 | &attr_new->mp_nexthop_global))) | |
2527 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2528 | |
9bcb3eef | 2529 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2530 | /* Unintern existing, set to new. */ |
40381db7 DS |
2531 | bgp_attr_unintern(&pi->attr); |
2532 | pi->attr = attr_new; | |
2533 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2534 | } |
a2299aba AD |
2535 | |
2536 | /* Gateway IP nexthop should be resolved */ | |
2537 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2538 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
2539 | NULL, 0)) | |
2540 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); | |
2541 | else { | |
2542 | if (BGP_DEBUG(nht, NHT)) { | |
2543 | inet_ntop(pp->family, | |
2544 | &attr.evpn_overlay.gw_ip, | |
2545 | buf1, sizeof(buf1)); | |
2546 | zlog_debug("%s: gateway IP NH unresolved", | |
2547 | buf1); | |
2548 | } | |
2549 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2550 | } | |
2551 | } else { | |
2552 | ||
2553 | /* as it is an importation, change nexthop */ | |
2554 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2555 | } | |
d3135ba3 | 2556 | |
090efa2f AK |
2557 | /* Link path to evpn nexthop */ |
2558 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2559 | ||
9bcb3eef | 2560 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2561 | safi); |
b49cdf4c | 2562 | |
d3135ba3 | 2563 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2564 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2565 | |
7452e879 | 2566 | /* Process for route leaking. */ |
2567 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2568 | ||
9bcb3eef | 2569 | bgp_dest_unlock_node(dest); |
3c11d70a | 2570 | |
5f0c5ec8 | 2571 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2572 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2573 | new_pi ? "new" : "update", dest, | |
2574 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2575 | pi->flags); | |
5f0c5ec8 | 2576 | |
d3135ba3 | 2577 | return ret; |
2578 | } | |
2579 | ||
128ea8ab | 2580 | /* |
2581 | * Install route entry into the VNI routing table and invoke route selection. | |
2582 | */ | |
d62a17ae | 2583 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2584 | const struct prefix_evpn *p, |
40381db7 | 2585 | struct bgp_path_info *parent_pi) |
d62a17ae | 2586 | { |
9bcb3eef | 2587 | struct bgp_dest *dest; |
40381db7 | 2588 | struct bgp_path_info *pi; |
9c7edc03 | 2589 | struct bgp_path_info *local_pi; |
d62a17ae | 2590 | struct attr *attr_new; |
2591 | int ret; | |
c44ab6f1 | 2592 | struct prefix_evpn ad_evp; |
74efb822 AK |
2593 | bool old_local_es = false; |
2594 | bool new_local_es; | |
c44ab6f1 AK |
2595 | |
2596 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2597 | * we need to create a different copy for the VNI | |
2598 | */ | |
2599 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2600 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2601 | parent_pi->attr->nexthop); | |
d62a17ae | 2602 | |
2603 | /* Create (or fetch) route within the VNI. */ | |
2604 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2605 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2606 | |
2607 | /* Check if route entry is already present. */ | |
9bcb3eef | 2608 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2609 | if (pi->extra |
2610 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2611 | break; |
2612 | ||
bd0254af MS |
2613 | if (!pi) { |
2614 | /* Create an info */ | |
26c03e43 | 2615 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2616 | parent_pi->attr); |
74efb822 | 2617 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2618 | } else { |
40381db7 DS |
2619 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2620 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2621 | bgp_dest_unlock_node(dest); |
d62a17ae | 2622 | return 0; |
2623 | } | |
2624 | /* The attribute has changed. */ | |
2625 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2626 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2627 | |
50f74cf1 | 2628 | /* Restore route, if needed. */ |
40381db7 | 2629 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2630 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2631 | |
2632 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2633 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2634 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2635 | |
74efb822 AK |
2636 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
2637 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
2638 | /* If ESI is different or if its type has changed we | |
2639 | * need to reinstall the path in zebra | |
2640 | */ | |
2641 | if ((old_local_es != new_local_es) | |
2642 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
2643 | sizeof(attr_new->esi))) { | |
2644 | ||
2645 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2646 | zlog_debug("VNI %d path %pFX chg to %s es", | |
2647 | vpn->vni, &pi->net->p, | |
2648 | new_local_es ? "local" | |
2649 | : "non-local"); | |
2650 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
2651 | } | |
2652 | ||
50f74cf1 | 2653 | /* Unintern existing, set to new. */ |
40381db7 DS |
2654 | bgp_attr_unintern(&pi->attr); |
2655 | pi->attr = attr_new; | |
2656 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2657 | } |
2658 | ||
021b6596 AD |
2659 | /* Add this route to remote IP hashtable */ |
2660 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
2661 | ||
50f74cf1 | 2662 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2663 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2664 | |
9c7edc03 AK |
2665 | /* if the best path is a local path with a non-zero ES |
2666 | * sync info against the local path may need to be updated | |
2667 | * when a remote path is added/updated (including changes | |
2668 | * from sync-path to remote-path) | |
2669 | */ | |
2670 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 2671 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 2672 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 2673 | __func__); |
9bcb3eef | 2674 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2675 | |
50f74cf1 | 2676 | return ret; |
2677 | } | |
2678 | ||
d3135ba3 | 2679 | /* |
2680 | * Uninstall route entry from the VRF routing table and send message | |
2681 | * to zebra, if appropriate. | |
2682 | */ | |
2683 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2684 | const struct prefix_evpn *evp, |
40381db7 | 2685 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2686 | { |
9bcb3eef | 2687 | struct bgp_dest *dest; |
40381db7 | 2688 | struct bgp_path_info *pi; |
c4edf708 | 2689 | int ret = 0; |
d3135ba3 | 2690 | struct prefix p; |
2691 | struct prefix *pp = &p; | |
2692 | afi_t afi = 0; | |
2693 | safi_t safi = 0; | |
2694 | ||
2695 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2696 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2697 | |
2dbe669b | 2698 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2699 | zlog_debug( |
2dbe669b DA |
2700 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2701 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2702 | parent_pi->flags); | |
1eb88002 | 2703 | |
d3135ba3 | 2704 | /* Locate route within the VRF. */ |
2705 | /* NOTE: There is no RD here. */ | |
3714a385 | 2706 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2707 | afi = AFI_IP; |
2708 | safi = SAFI_UNICAST; | |
9bcb3eef | 2709 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2710 | } else { |
2711 | afi = AFI_IP6; | |
2712 | safi = SAFI_UNICAST; | |
9bcb3eef | 2713 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2714 | } |
2715 | ||
9bcb3eef | 2716 | if (!dest) |
d3135ba3 | 2717 | return 0; |
2718 | ||
2719 | /* Find matching route entry. */ | |
9bcb3eef | 2720 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2721 | if (pi->extra |
2722 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2723 | break; |
2724 | ||
e71ad4b6 DA |
2725 | if (!pi) { |
2726 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 2727 | return 0; |
e71ad4b6 | 2728 | } |
d3135ba3 | 2729 | |
5f0c5ec8 | 2730 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2731 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2732 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2733 | pi->flags); | |
5f0c5ec8 | 2734 | |
7452e879 | 2735 | /* Process for route leaking. */ |
2736 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2737 | ||
9bcb3eef | 2738 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2739 | safi); |
4c7a11d5 | 2740 | |
d3135ba3 | 2741 | /* Mark entry for deletion */ |
9bcb3eef | 2742 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2743 | |
090efa2f AK |
2744 | /* Unlink path to evpn nexthop */ |
2745 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
2746 | ||
d3135ba3 | 2747 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2748 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2749 | |
2750 | /* Unlock route node. */ | |
9bcb3eef | 2751 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2752 | |
2753 | return ret; | |
2754 | } | |
2755 | ||
128ea8ab | 2756 | /* |
2757 | * Uninstall route entry from the VNI routing table and send message | |
2758 | * to zebra, if appropriate. | |
2759 | */ | |
d62a17ae | 2760 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2761 | const struct prefix_evpn *p, |
40381db7 | 2762 | struct bgp_path_info *parent_pi) |
128ea8ab | 2763 | { |
9bcb3eef | 2764 | struct bgp_dest *dest; |
40381db7 | 2765 | struct bgp_path_info *pi; |
9c7edc03 | 2766 | struct bgp_path_info *local_pi; |
d62a17ae | 2767 | int ret; |
c44ab6f1 AK |
2768 | struct prefix_evpn ad_evp; |
2769 | ||
2770 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2771 | * we need to create a different copy for the VNI | |
2772 | */ | |
2773 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2774 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2775 | parent_pi->attr->nexthop); | |
128ea8ab | 2776 | |
d62a17ae | 2777 | /* Locate route within the VNI. */ |
2778 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2779 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2780 | if (!dest) | |
d62a17ae | 2781 | return 0; |
128ea8ab | 2782 | |
d62a17ae | 2783 | /* Find matching route entry. */ |
9bcb3eef | 2784 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2785 | if (pi->extra |
2786 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2787 | break; |
128ea8ab | 2788 | |
e71ad4b6 DA |
2789 | if (!pi) { |
2790 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2791 | return 0; |
e71ad4b6 | 2792 | } |
128ea8ab | 2793 | |
021b6596 AD |
2794 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
2795 | ||
d62a17ae | 2796 | /* Mark entry for deletion */ |
9bcb3eef | 2797 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2798 | |
d62a17ae | 2799 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2800 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2801 | |
9c7edc03 AK |
2802 | /* if the best path is a local path with a non-zero ES |
2803 | * sync info against the local path may need to be updated | |
2804 | * when a remote path is deleted | |
2805 | */ | |
2806 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2807 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2808 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2809 | __func__); | |
2810 | ||
d62a17ae | 2811 | /* Unlock route node. */ |
9bcb3eef | 2812 | bgp_dest_unlock_node(dest); |
128ea8ab | 2813 | |
d62a17ae | 2814 | return ret; |
128ea8ab | 2815 | } |
2816 | ||
5ba238b7 MK |
2817 | /* |
2818 | * Given a route entry and a VRF, see if this route entry should be | |
2819 | * imported into the VRF i.e., RTs match. | |
2820 | */ | |
4b7e6066 | 2821 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2822 | struct bgp_path_info *pi) |
5ba238b7 | 2823 | { |
40381db7 | 2824 | struct attr *attr = pi->attr; |
5ba238b7 | 2825 | struct ecommunity *ecom; |
f6e07e1b | 2826 | uint32_t i; |
5ba238b7 MK |
2827 | |
2828 | assert(attr); | |
2829 | /* Route should have valid RT to be even considered. */ | |
2830 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2831 | return 0; | |
2832 | ||
2833 | ecom = attr->ecommunity; | |
2834 | if (!ecom || !ecom->size) | |
2835 | return 0; | |
2836 | ||
2837 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2838 | * matches, we're done. | |
2839 | */ | |
2840 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2841 | uint8_t *pnt; |
2842 | uint8_t type, sub_type; | |
5ba238b7 MK |
2843 | struct ecommunity_val *eval; |
2844 | struct ecommunity_val eval_tmp; | |
2845 | struct vrf_irt_node *irt; | |
2846 | ||
2847 | /* Only deal with RTs */ | |
34540b0d | 2848 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2849 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2850 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2851 | type = *pnt++; |
2852 | sub_type = *pnt++; | |
2853 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2854 | continue; | |
2855 | ||
2856 | /* See if this RT matches specified VNIs import RTs */ | |
2857 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2858 | if (irt) |
5ba238b7 MK |
2859 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2860 | return 1; | |
2861 | ||
2862 | /* Also check for non-exact match. In this, we mask out the AS | |
2863 | * and | |
2864 | * only check on the local-admin sub-field. This is to | |
2865 | * facilitate using | |
2866 | * VNI as the RT for EBGP peering too. | |
2867 | */ | |
2868 | irt = NULL; | |
2869 | if (type == ECOMMUNITY_ENCODE_AS | |
2870 | || type == ECOMMUNITY_ENCODE_AS4 | |
2871 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2872 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2873 | mask_ecom_global_admin(&eval_tmp, eval); |
2874 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2875 | } | |
5d9cbca2 | 2876 | if (irt) |
5ba238b7 MK |
2877 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2878 | return 1; | |
2879 | } | |
2880 | ||
2881 | return 0; | |
2882 | } | |
2883 | ||
128ea8ab | 2884 | /* |
2885 | * Given a route entry and a VNI, see if this route entry should be | |
2886 | * imported into the VNI i.e., RTs match. | |
2887 | */ | |
d62a17ae | 2888 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2889 | struct bgp_path_info *pi) |
d62a17ae | 2890 | { |
40381db7 | 2891 | struct attr *attr = pi->attr; |
d62a17ae | 2892 | struct ecommunity *ecom; |
f6e07e1b | 2893 | uint32_t i; |
d62a17ae | 2894 | |
2895 | assert(attr); | |
2896 | /* Route should have valid RT to be even considered. */ | |
2897 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2898 | return 0; | |
2899 | ||
2900 | ecom = attr->ecommunity; | |
2901 | if (!ecom || !ecom->size) | |
2902 | return 0; | |
2903 | ||
2904 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2905 | * matches, we're done. | |
2906 | */ | |
2907 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2908 | uint8_t *pnt; |
2909 | uint8_t type, sub_type; | |
d62a17ae | 2910 | struct ecommunity_val *eval; |
2911 | struct ecommunity_val eval_tmp; | |
2912 | struct irt_node *irt; | |
2913 | ||
2914 | /* Only deal with RTs */ | |
34540b0d | 2915 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2916 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2917 | + (i * ecom->unit_size)); |
d62a17ae | 2918 | type = *pnt++; |
2919 | sub_type = *pnt++; | |
2920 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2921 | continue; | |
2922 | ||
2923 | /* See if this RT matches specified VNIs import RTs */ | |
2924 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2925 | if (irt) |
d62a17ae | 2926 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2927 | return 1; | |
2928 | ||
2929 | /* Also check for non-exact match. In this, we mask out the AS | |
2930 | * and | |
2931 | * only check on the local-admin sub-field. This is to | |
2932 | * facilitate using | |
2933 | * VNI as the RT for EBGP peering too. | |
2934 | */ | |
2935 | irt = NULL; | |
2936 | if (type == ECOMMUNITY_ENCODE_AS | |
2937 | || type == ECOMMUNITY_ENCODE_AS4 | |
2938 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2939 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2940 | mask_ecom_global_admin(&eval_tmp, eval); |
2941 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2942 | } | |
b1ab0dfe | 2943 | if (irt) |
d62a17ae | 2944 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2945 | return 1; | |
2946 | } | |
2947 | ||
2948 | return 0; | |
128ea8ab | 2949 | } |
2950 | ||
47bf0432 CS |
2951 | /* This API will scan evpn routes for checking attribute's rmac |
2952 | * macthes with bgp instance router mac. It avoid installing | |
2953 | * route into bgp vrf table and remote rmac in bridge table. | |
2954 | */ | |
2955 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2956 | const struct prefix_evpn *evp, |
47bf0432 CS |
2957 | struct bgp_path_info *pi) |
2958 | { | |
2959 | /* evpn route could have learnt prior to L3vni has come up, | |
2960 | * perform rmac check before installing route and | |
2961 | * remote router mac. | |
2962 | * The route will be removed from global bgp table once | |
2963 | * SVI comes up with MAC and stored in hash, triggers | |
2964 | * bgp_mac_rescan_all_evpn_tables. | |
2965 | */ | |
05864da7 | 2966 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2967 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2968 | char attr_str[BUFSIZ] = {0}; |
2969 | ||
5022c833 | 2970 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2971 | |
2dbe669b DA |
2972 | zlog_debug( |
2973 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2974 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2975 | } |
2976 | ||
2977 | return 1; | |
2978 | } | |
2979 | ||
2980 | return 0; | |
2981 | } | |
2982 | ||
bbc57c6c AK |
2983 | /* don't import hosts that are locally attached */ |
2984 | static inline bool | |
36dd4574 AK |
2985 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
2986 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
2987 | struct bgp_path_info *pi, int install) |
2988 | { | |
26c03e43 | 2989 | esi_t *esi; |
bbc57c6c | 2990 | |
26c03e43 AK |
2991 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2992 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2993 | ||
2994 | /* Don't import routes that point to a local destination */ | |
2995 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2996 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
2997 | char esi_buf[ESI_STR_LEN]; | |
2998 | ||
2999 | zlog_debug( | |
3000 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
3001 | install ? "import" : "unimport", evp, | |
3002 | esi_to_str(esi, esi_buf, | |
3003 | sizeof(esi_buf))); | |
3004 | } | |
3005 | return true; | |
3006 | } | |
58bff4d1 AK |
3007 | } |
3008 | return false; | |
3009 | } | |
26c03e43 | 3010 | |
58bff4d1 AK |
3011 | /* |
3012 | * Install or uninstall a mac-ip route in the provided vrf if | |
3013 | * there is a rt match | |
3014 | */ | |
3015 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3016 | struct bgp_path_info *pi, | |
3017 | int install) | |
3018 | { | |
3019 | int ret = 0; | |
3020 | const struct prefix_evpn *evp = | |
3021 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3022 | ||
3023 | /* Consider "valid" remote routes applicable for | |
3024 | * this VRF. | |
3025 | */ | |
3026 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3027 | && pi->type == ZEBRA_ROUTE_BGP | |
3028 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3029 | return 0; | |
3030 | ||
58bff4d1 AK |
3031 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3032 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3033 | return 0; | |
3034 | ||
74efb822 AK |
3035 | /* don't import hosts that are locally attached */ |
3036 | if (install | |
3037 | && !bgp_evpn_skip_vrf_import_of_local_es(bgp_vrf, evp, pi, | |
3038 | install)) | |
58bff4d1 | 3039 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3040 | else |
58bff4d1 AK |
3041 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3042 | pi); | |
26c03e43 | 3043 | |
58bff4d1 AK |
3044 | if (ret) |
3045 | flog_err(EC_BGP_EVPN_FAIL, | |
3046 | "Failed to %s EVPN %pFX route in VRF %s", | |
3047 | install ? "install" : "uninstall", evp, | |
3048 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3049 | } |
58bff4d1 AK |
3050 | |
3051 | return ret; | |
bbc57c6c AK |
3052 | } |
3053 | ||
5ba238b7 MK |
3054 | /* |
3055 | * Install or uninstall mac-ip routes are appropriate for this | |
3056 | * particular VRF. | |
3057 | */ | |
996c9314 | 3058 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3059 | { |
3060 | afi_t afi; | |
3061 | safi_t safi; | |
9bcb3eef | 3062 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3063 | struct bgp_table *table; |
40381db7 | 3064 | struct bgp_path_info *pi; |
5ba238b7 | 3065 | int ret; |
5e53dce3 | 3066 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3067 | |
3068 | afi = AFI_L2VPN; | |
3069 | safi = SAFI_EVPN; | |
5e53dce3 T |
3070 | bgp_evpn = bgp_get_evpn(); |
3071 | if (!bgp_evpn) | |
5ba238b7 MK |
3072 | return -1; |
3073 | ||
3074 | /* Walk entire global routing table and evaluate routes which could be | |
3075 | * imported into this VRF. Note that we need to loop through all global | |
3076 | * routes to determine which route matches the import rt on vrf | |
3077 | */ | |
9bcb3eef DS |
3078 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3079 | rd_dest = bgp_route_next(rd_dest)) { | |
3080 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3081 | if (!table) |
3082 | continue; | |
3083 | ||
9bcb3eef DS |
3084 | for (dest = bgp_table_top(table); dest; |
3085 | dest = bgp_route_next(dest)) { | |
3086 | const struct prefix_evpn *evp = | |
3087 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3088 | dest); | |
5ba238b7 | 3089 | |
1eb88002 | 3090 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3091 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3092 | || evp->prefix.route_type | |
3093 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3094 | continue; |
3095 | ||
1eb88002 | 3096 | /* if not a mac+ip route skip this route */ |
3714a385 | 3097 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3098 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3099 | continue; |
3100 | ||
9bcb3eef | 3101 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3102 | pi = pi->next) { |
58bff4d1 AK |
3103 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3104 | bgp_vrf, pi, install); | |
3105 | if (ret) | |
3106 | return ret; | |
5ba238b7 MK |
3107 | } |
3108 | } | |
3109 | } | |
3110 | ||
3111 | return 0; | |
3112 | } | |
3113 | ||
128ea8ab | 3114 | /* |
3115 | * Install or uninstall routes of specified type that are appropriate for this | |
3116 | * particular VNI. | |
3117 | */ | |
d62a17ae | 3118 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3119 | struct bgpevpn *vpn, | |
3120 | bgp_evpn_route_type rtype, | |
3121 | int install) | |
3122 | { | |
0291c246 MK |
3123 | afi_t afi; |
3124 | safi_t safi; | |
9bcb3eef | 3125 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3126 | struct bgp_table *table; |
40381db7 | 3127 | struct bgp_path_info *pi; |
0291c246 | 3128 | int ret; |
d62a17ae | 3129 | |
3130 | afi = AFI_L2VPN; | |
3131 | safi = SAFI_EVPN; | |
3132 | ||
3133 | /* Walk entire global routing table and evaluate routes which could be | |
3134 | * imported into this VPN. Note that we cannot just look at the routes | |
3135 | * for | |
3136 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3137 | * RD. | |
3138 | */ | |
3139 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3140 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3141 | rd_dest = bgp_route_next(rd_dest)) { | |
3142 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3143 | if (!table) |
3144 | continue; | |
3145 | ||
9bcb3eef DS |
3146 | for (dest = bgp_table_top(table); dest; |
3147 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3148 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3149 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3150 | dest); | |
d62a17ae | 3151 | |
3152 | if (evp->prefix.route_type != rtype) | |
3153 | continue; | |
3154 | ||
9bcb3eef | 3155 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3156 | pi = pi->next) { |
d62a17ae | 3157 | /* Consider "valid" remote routes applicable for |
3158 | * this VNI. */ | |
40381db7 DS |
3159 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3160 | && pi->type == ZEBRA_ROUTE_BGP | |
3161 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3162 | continue; |
3163 | ||
40381db7 | 3164 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3165 | if (install) |
3166 | ret = install_evpn_route_entry( | |
40381db7 | 3167 | bgp, vpn, evp, pi); |
d62a17ae | 3168 | else |
3169 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3170 | bgp, vpn, evp, pi); |
d62a17ae | 3171 | |
3172 | if (ret) { | |
af4c2728 | 3173 | flog_err( |
e50f7cfd | 3174 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3175 | "%u: Failed to %s EVPN %s route in VNI %u", |
3176 | bgp->vrf_id, | |
3177 | install ? "install" | |
3178 | : "uninstall", | |
3179 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3180 | ? "MACIP" | |
3181 | : "IMET", | |
3182 | vpn->vni); | |
dc52bece DS |
3183 | |
3184 | bgp_dest_unlock_node(rd_dest); | |
3185 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3186 | return ret; |
3187 | } | |
3188 | } | |
3189 | } | |
3190 | } | |
3191 | } | |
3192 | ||
3193 | return 0; | |
128ea8ab | 3194 | } |
3195 | ||
5ba238b7 | 3196 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3197 | * is invoked upon l3vni-add or l3vni import rt change |
3198 | */ | |
5ba238b7 MK |
3199 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3200 | { | |
3201 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3202 | return 0; | |
3203 | } | |
3204 | ||
128ea8ab | 3205 | /* |
3206 | * Install any existing remote routes applicable for this VNI into its | |
3207 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3208 | * RT is changed. | |
3209 | */ | |
d62a17ae | 3210 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3211 | { |
d62a17ae | 3212 | int ret; |
128ea8ab | 3213 | |
d62a17ae | 3214 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3215 | * for this VNI. | |
3216 | */ | |
3217 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3218 | 1); | |
3219 | if (ret) | |
3220 | return ret; | |
128ea8ab | 3221 | |
c44ab6f1 AK |
3222 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3223 | 1); | |
3224 | if (ret) | |
3225 | return ret; | |
3226 | ||
d62a17ae | 3227 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3228 | 1); | |
128ea8ab | 3229 | } |
3230 | ||
5ba238b7 MK |
3231 | /* uninstall routes from l3vni vrf. */ |
3232 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3233 | { | |
3234 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3235 | return 0; | |
3236 | } | |
3237 | ||
90e60aa7 | 3238 | /* |
3239 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3240 | * this is invoked is upon an import RT change. | |
3241 | */ | |
d62a17ae | 3242 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3243 | { |
d62a17ae | 3244 | int ret; |
90e60aa7 | 3245 | |
d62a17ae | 3246 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3247 | * applicable | |
3248 | * for this VNI. | |
3249 | */ | |
3250 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3251 | 0); | |
3252 | if (ret) | |
3253 | return ret; | |
90e60aa7 | 3254 | |
c44ab6f1 | 3255 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3256 | 0); |
c44ab6f1 AK |
3257 | if (ret) |
3258 | return ret; | |
3259 | ||
3260 | ||
d62a17ae | 3261 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3262 | 0); | |
90e60aa7 | 3263 | } |
3264 | ||
d3135ba3 | 3265 | /* |
3266 | * Install or uninstall route in matching VRFs (list). | |
3267 | */ | |
3268 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3269 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3270 | struct bgp_path_info *pi, |
d3135ba3 | 3271 | struct list *vrfs, int install) |
3272 | { | |
d3135ba3 | 3273 | struct bgp *bgp_vrf; |
3274 | struct listnode *node, *nnode; | |
3275 | ||
90264d64 | 3276 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3277 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3278 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3279 | return 0; |
3280 | ||
90264d64 | 3281 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3282 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3283 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3284 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3285 | return 0; |
3286 | ||
d3135ba3 | 3287 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3288 | int ret; | |
3289 | ||
36dd4574 | 3290 | /* don't import hosts that are locally attached */ |
74efb822 AK |
3291 | if (install |
3292 | && !bgp_evpn_skip_vrf_import_of_local_es(bgp_vrf, evp, pi, | |
3293 | install)) | |
40381db7 | 3294 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3295 | else |
996c9314 | 3296 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3297 | pi); |
d3135ba3 | 3298 | |
3299 | if (ret) { | |
e50f7cfd | 3300 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3301 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3302 | bgp_def->vrf_id, |
2dbe669b | 3303 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3304 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3305 | return ret; |
3306 | } | |
3307 | } | |
3308 | ||
3309 | return 0; | |
3310 | } | |
3311 | ||
128ea8ab | 3312 | /* |
3313 | * Install or uninstall route in matching VNIs (list). | |
3314 | */ | |
d62a17ae | 3315 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3316 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3317 | struct bgp_path_info *pi, |
d62a17ae | 3318 | struct list *vnis, int install) |
128ea8ab | 3319 | { |
d62a17ae | 3320 | struct bgpevpn *vpn; |
3321 | struct listnode *node, *nnode; | |
128ea8ab | 3322 | |
d62a17ae | 3323 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3324 | int ret; | |
128ea8ab | 3325 | |
d62a17ae | 3326 | if (!is_vni_live(vpn)) |
3327 | continue; | |
128ea8ab | 3328 | |
d62a17ae | 3329 | if (install) |
40381db7 | 3330 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3331 | else |
40381db7 | 3332 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3333 | |
d62a17ae | 3334 | if (ret) { |
1c50c1c0 QY |
3335 | flog_err(EC_BGP_EVPN_FAIL, |
3336 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3337 | bgp->vrf_id, install ? "install" : "uninstall", | |
3338 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3339 | ? "MACIP" | |
3340 | : "IMET", | |
3341 | vpn->vni); | |
d62a17ae | 3342 | return ret; |
3343 | } | |
3344 | } | |
128ea8ab | 3345 | |
d62a17ae | 3346 | return 0; |
128ea8ab | 3347 | } |
3348 | ||
3349 | /* | |
50f74cf1 | 3350 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3351 | */ |
26c03e43 AK |
3352 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3353 | safi_t safi, const struct prefix *p, | |
3354 | struct bgp_path_info *pi, | |
3355 | int import, bool in_vni_rt, | |
3356 | bool in_vrf_rt) | |
d62a17ae | 3357 | { |
3358 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3359 | struct attr *attr = pi->attr; |
d62a17ae | 3360 | struct ecommunity *ecom; |
f6e07e1b | 3361 | uint32_t i; |
c44ab6f1 | 3362 | struct prefix_evpn ad_evp; |
d62a17ae | 3363 | |
3364 | assert(attr); | |
3365 | ||
50f74cf1 | 3366 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3367 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3368 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3369 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3370 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3371 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3372 | return 0; |
3373 | ||
3374 | /* If we don't have Route Target, nothing much to do. */ | |
3375 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3376 | return 0; | |
3377 | ||
c44ab6f1 AK |
3378 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3379 | * we need to create a different copy for the VNI | |
3380 | */ | |
3381 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3382 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3383 | ||
d62a17ae | 3384 | ecom = attr->ecommunity; |
3385 | if (!ecom || !ecom->size) | |
3386 | return -1; | |
3387 | ||
50f74cf1 | 3388 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3389 | * attached to the route */ | |
d62a17ae | 3390 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3391 | uint8_t *pnt; |
3392 | uint8_t type, sub_type; | |
d62a17ae | 3393 | struct ecommunity_val *eval; |
3394 | struct ecommunity_val eval_tmp; | |
996c9314 | 3395 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3396 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3397 | struct bgp_evpn_es *es; |
d62a17ae | 3398 | |
3399 | /* Only deal with RTs */ | |
34540b0d | 3400 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3401 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3402 | + (i * ecom->unit_size)); |
d62a17ae | 3403 | type = *pnt++; |
3404 | sub_type = *pnt++; | |
3405 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3406 | continue; | |
3407 | ||
58bff4d1 AK |
3408 | /* non-local MAC-IP routes in the global route table are linked |
3409 | * to the destination ES | |
3410 | */ | |
3411 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3412 | bgp_evpn_path_es_link(pi, 0, | |
3413 | bgp_evpn_attr_get_esi(pi->attr)); | |
3414 | ||
50f74cf1 | 3415 | /* |
3416 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3417 | * IMET route is imported into VNI table. | |
3418 | * prefix routes are imported into VRF table. | |
523cafc4 | 3419 | */ |
50f74cf1 | 3420 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3421 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3422 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3423 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3424 | |
26c03e43 | 3425 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3426 | if (irt) |
40381db7 DS |
3427 | install_uninstall_route_in_vnis( |
3428 | bgp, afi, safi, evp, pi, irt->vnis, | |
3429 | import); | |
50f74cf1 | 3430 | |
26c03e43 | 3431 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3432 | if (vrf_irt) |
40381db7 DS |
3433 | install_uninstall_route_in_vrfs( |
3434 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3435 | import); | |
50f74cf1 | 3436 | |
3437 | /* Also check for non-exact match. | |
3438 | * In this, we mask out the AS and | |
3439 | * only check on the local-admin sub-field. | |
3440 | * This is to facilitate using | |
3441 | * VNI as the RT for EBGP peering too. | |
3442 | */ | |
3443 | irt = NULL; | |
3444 | vrf_irt = NULL; | |
3445 | if (type == ECOMMUNITY_ENCODE_AS | |
3446 | || type == ECOMMUNITY_ENCODE_AS4 | |
3447 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3448 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3449 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3450 | if (in_vni_rt) |
3451 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3452 | if (in_vrf_rt) | |
3453 | vrf_irt = | |
3454 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3455 | } |
3456 | ||
3457 | if (irt) | |
40381db7 DS |
3458 | install_uninstall_route_in_vnis( |
3459 | bgp, afi, safi, evp, pi, irt->vnis, | |
3460 | import); | |
50f74cf1 | 3461 | if (vrf_irt) |
40381db7 DS |
3462 | install_uninstall_route_in_vrfs( |
3463 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3464 | import); | |
50f74cf1 | 3465 | } |
3466 | ||
3467 | /* es route is imported into the es table */ | |
3468 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3469 | ||
3470 | /* we will match based on the entire esi to avoid | |
3471 | * imoort of an es route for esi2 into esi1 | |
3472 | */ | |
c44ab6f1 | 3473 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3474 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3475 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3476 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3477 | } |
d62a17ae | 3478 | } |
3479 | ||
3480 | return 0; | |
128ea8ab | 3481 | } |
3482 | ||
26c03e43 AK |
3483 | /* |
3484 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3485 | */ | |
3486 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3487 | const struct prefix *p, | |
3488 | struct bgp_path_info *pi, int import) | |
3489 | { | |
3490 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3491 | true, true); | |
3492 | } | |
3493 | ||
74efb822 AK |
3494 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
3495 | { | |
3496 | struct bgp *bgp_evpn; | |
3497 | ||
3498 | bgp_evpn = bgp_get_evpn(); | |
3499 | if (!bgp_evpn) | |
3500 | return; | |
3501 | ||
3502 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3503 | &pi->net->p, pi, import); | |
3504 | } | |
3505 | ||
26c03e43 AK |
3506 | /* Import the pi into vrf routing tables */ |
3507 | void bgp_evpn_import_route_in_vrfs(struct bgp_path_info *pi, int import) | |
3508 | { | |
3509 | struct bgp *bgp_evpn; | |
3510 | ||
3511 | bgp_evpn = bgp_get_evpn(); | |
3512 | if (!bgp_evpn) | |
3513 | return; | |
3514 | ||
3515 | bgp_evpn_install_uninstall_table(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3516 | &pi->net->p, pi, import, false /*vpn*/, | |
3517 | true /*vrf*/); | |
3518 | } | |
3519 | ||
2bb9eff4 DS |
3520 | /* |
3521 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3522 | * routes | |
3523 | */ | |
80b140af MK |
3524 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3525 | { | |
5fd9c12b KA |
3526 | /* Delete ipv4 default route and withdraw from peers */ |
3527 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3528 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3529 | SAFI_UNICAST, false); | |
3530 | ||
80b140af | 3531 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3532 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3533 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3534 | |
5fd9c12b KA |
3535 | /* Delete ipv6 default route and withdraw from peers */ |
3536 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3537 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3538 | SAFI_UNICAST, false); | |
3539 | ||
80b140af | 3540 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3541 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3542 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3543 | } |
3544 | ||
2bb9eff4 DS |
3545 | /* |
3546 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3547 | * routes | |
3548 | */ | |
5394a276 | 3549 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3550 | { |
5394a276 CS |
3551 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3552 | ||
3553 | bgp_evpn = bgp_get_evpn(); | |
3554 | if (!bgp_evpn) | |
3555 | return; | |
3556 | ||
80b140af | 3557 | /* update all ipv4 routes */ |
fdf19f06 MK |
3558 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3559 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3560 | |
5fd9c12b KA |
3561 | /* update ipv4 default route and withdraw from peers */ |
3562 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3563 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3564 | SAFI_UNICAST, true); | |
3565 | ||
80b140af | 3566 | /* update all ipv6 routes */ |
fdf19f06 MK |
3567 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3568 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3569 | |
3570 | /* update ipv6 default route and withdraw from peers */ | |
3571 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3572 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3573 | SAFI_UNICAST, true); | |
3574 | ||
80b140af MK |
3575 | } |
3576 | ||
676f83b9 | 3577 | /* |
3578 | * update and advertise local routes for a VRF as type-5 routes. | |
3579 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3580 | * done in the global route table using the routes which already exist in the | |
3581 | * VRF routing table | |
3582 | */ | |
80b140af | 3583 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3584 | { |
80b140af MK |
3585 | /* skip if the RD is configured */ |
3586 | if (is_vrf_rd_configured(bgp_vrf)) | |
3587 | return; | |
3588 | ||
3589 | /* derive the RD for the VRF based on new router-id */ | |
3590 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3591 | ||
3592 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3593 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3594 | } |
3595 | ||
3596 | /* | |
3597 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3598 | * This is invoked upon VRF RD change. The processing is done only from global | |
3599 | * table. | |
3600 | */ | |
80b140af | 3601 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3602 | { |
80b140af MK |
3603 | /* skip if the RD is configured */ |
3604 | if (is_vrf_rd_configured(bgp_vrf)) | |
3605 | return; | |
3606 | ||
3607 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3608 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3609 | } |
3610 | ||
90e60aa7 | 3611 | /* |
3612 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3613 | * change. Note that the processing is done only on the global route table | |
3614 | * using routes that already exist in the per-VNI table. | |
3615 | */ | |
d62a17ae | 3616 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3617 | { | |
3618 | struct prefix_evpn p; | |
9bcb3eef | 3619 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3620 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3621 | struct attr *attr; |
3622 | afi_t afi = AFI_L2VPN; | |
3623 | safi_t safi = SAFI_EVPN; | |
3624 | ||
3625 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3626 | * attributes to create and advertise the type-3 route for this VNI | |
3627 | * in the global table. | |
fd069644 DS |
3628 | * |
3629 | * RT-3 only if doing head-end replication | |
d62a17ae | 3630 | */ |
833b8a50 AK |
3631 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3632 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3633 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3634 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3635 | if (!dest) /* unexpected */ | |
fd069644 | 3636 | return 0; |
9bcb3eef | 3637 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3638 | if (pi->peer == bgp->peer_self && |
3639 | pi->type == ZEBRA_ROUTE_BGP | |
3640 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3641 | break; | |
3642 | if (!pi) /* unexpected */ | |
3643 | return 0; | |
3644 | attr = pi->attr; | |
d62a17ae | 3645 | |
9c7edc03 AK |
3646 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3647 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3648 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3649 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3650 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3651 | |
fd069644 | 3652 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3653 | bgp_process(bgp, global_dest, afi, safi); |
3654 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3655 | } |
d62a17ae | 3656 | |
3657 | /* Now, walk this VNI's route table and use the route and its attribute | |
3658 | * to create and schedule route in global table. | |
3659 | */ | |
9bcb3eef DS |
3660 | for (dest = bgp_table_top(vpn->route_table); dest; |
3661 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3662 | const struct prefix_evpn *evp = |
9bcb3eef | 3663 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3664 | |
d60f63f0 AD |
3665 | /* |
3666 | * We have already processed type-3 routes. | |
3667 | * Process only type-1 and type-2 routes here. | |
3668 | */ | |
3669 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
3670 | && evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
d62a17ae | 3671 | continue; |
3672 | ||
9bcb3eef | 3673 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3674 | if (pi->peer == bgp->peer_self |
3675 | && pi->type == ZEBRA_ROUTE_BGP | |
3676 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3677 | break; |
40381db7 | 3678 | if (!pi) |
d62a17ae | 3679 | continue; |
3680 | ||
3681 | /* Create route in global routing table using this route entry's | |
3682 | * attribute. | |
3683 | */ | |
40381db7 | 3684 | attr = pi->attr; |
c44ab6f1 | 3685 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3686 | evp, &vpn->prd); |
9bcb3eef | 3687 | assert(global_dest); |
d60f63f0 AD |
3688 | |
3689 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3690 | /* Type-2 route */ | |
3691 | update_evpn_route_entry( | |
3692 | bgp, vpn, afi, safi, global_dest, attr, 1, | |
3693 | &global_pi, 0, mac_mobility_seqnum(attr), | |
9c7edc03 | 3694 | false /* setup_sync */, NULL /* old_is_sync */); |
d60f63f0 AD |
3695 | } else { |
3696 | /* Type-1 route */ | |
3697 | struct bgp_evpn_es *es; | |
3698 | int route_changed = 0; | |
3699 | ||
3700 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
3701 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, | |
3702 | global_dest, attr, 1, | |
3703 | &global_pi, &route_changed); | |
3704 | } | |
d62a17ae | 3705 | |
3706 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3707 | bgp_process(bgp, global_dest, afi, safi); |
3708 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3709 | } |
3710 | ||
3711 | return 0; | |
90e60aa7 | 3712 | } |
3713 | ||
3714 | /* | |
3715 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3716 | * table. Invoked upon router-id change. | |
3717 | */ | |
d62a17ae | 3718 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3719 | { |
d62a17ae | 3720 | int ret; |
3721 | struct prefix_evpn p; | |
9bcb3eef | 3722 | struct bgp_dest *global_dest; |
40381db7 | 3723 | struct bgp_path_info *pi; |
d62a17ae | 3724 | afi_t afi = AFI_L2VPN; |
3725 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3726 | |
d62a17ae | 3727 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3728 | * for this VNI - from the global table. | |
3729 | */ | |
3730 | ret = delete_global_type2_routes(bgp, vpn); | |
3731 | if (ret) | |
3732 | return ret; | |
90e60aa7 | 3733 | |
d62a17ae | 3734 | /* Remove type-3 route for this VNI from global table. */ |
3735 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3736 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3737 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3738 | if (global_dest) { |
d62a17ae | 3739 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3740 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3741 | |
d62a17ae | 3742 | /* Schedule for processing - withdraws to peers happen from |
3743 | * this table. | |
3744 | */ | |
40381db7 | 3745 | if (pi) |
9bcb3eef DS |
3746 | bgp_process(bgp, global_dest, afi, safi); |
3747 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3748 | } |
90e60aa7 | 3749 | |
d60f63f0 AD |
3750 | |
3751 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 3752 | return 0; |
90e60aa7 | 3753 | } |
3754 | ||
2d48ee25 | 3755 | /* |
3756 | * Handle router-id change. Update and advertise local routes corresponding | |
3757 | * to this VNI from peers. Note that this is invoked after updating the | |
3758 | * router-id. The routes in the per-VNI table are used to create routes in | |
3759 | * the global table and schedule them. | |
3760 | */ | |
e3b78da8 | 3761 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3762 | { |
e3b78da8 | 3763 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3764 | |
d62a17ae | 3765 | /* Skip VNIs with configured RD. */ |
3766 | if (is_rd_configured(vpn)) | |
3767 | return; | |
2d48ee25 | 3768 | |
d62a17ae | 3769 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3770 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3771 | } |
3772 | ||
3773 | /* | |
3774 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3775 | * to this VNI from peers. Note that this is invoked prior to updating | |
3776 | * the router-id and is done only on the global route table, the routes | |
3777 | * are needed in the per-VNI table to re-advertise with new router id. | |
3778 | */ | |
e3b78da8 | 3779 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3780 | { |
e3b78da8 | 3781 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3782 | |
d62a17ae | 3783 | /* Skip VNIs with configured RD. */ |
3784 | if (is_rd_configured(vpn)) | |
3785 | return; | |
2d48ee25 | 3786 | |
d62a17ae | 3787 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3788 | } |
3789 | ||
fd069644 DS |
3790 | /* |
3791 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3792 | * This is invoked upon flooding mode changing to head-end replication. | |
3793 | */ | |
e3b78da8 | 3794 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3795 | { |
e3b78da8 | 3796 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3797 | struct bgp *bgp = data; |
3798 | struct prefix_evpn p; | |
3799 | ||
833b8a50 AK |
3800 | if (!vpn || !is_vni_live(vpn) || |
3801 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3802 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3803 | return; |
3804 | ||
3805 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3806 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3807 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3808 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3809 | } | |
3810 | ||
3811 | /* | |
3812 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3813 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3814 | */ | |
e3b78da8 | 3815 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3816 | { |
e3b78da8 | 3817 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3818 | struct bgp *bgp = data; |
3819 | struct prefix_evpn p; | |
3820 | ||
3821 | if (!vpn || !is_vni_live(vpn)) | |
3822 | return; | |
3823 | ||
3824 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3825 | delete_evpn_route(bgp, vpn, &p); | |
3826 | } | |
3827 | ||
128ea8ab | 3828 | /* |
3829 | * Process received EVPN type-2 route (advertise or withdraw). | |
3830 | */ | |
d62a17ae | 3831 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3832 | struct attr *attr, uint8_t *pfx, int psize, |
3833 | uint32_t addpath_id) | |
d62a17ae | 3834 | { |
3835 | struct prefix_rd prd; | |
e121d831 QY |
3836 | struct prefix_evpn p = {}; |
3837 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3838 | uint8_t ipaddr_len; |
3839 | uint8_t macaddr_len; | |
e121d831 QY |
3840 | /* holds the VNI(s) as in packet */ |
3841 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3842 | uint32_t num_labels = 0; |
554cd77a | 3843 | uint32_t eth_tag; |
d62a17ae | 3844 | int ret; |
3845 | ||
3846 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3847 | * additional 3 bytes if there is a second label (VNI): | |
3848 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3849 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3850 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3851 | */ | |
3852 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3853 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3854 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3855 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3856 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3857 | return -1; |
3858 | } | |
3859 | ||
e121d831 QY |
3860 | struct stream *pkt = stream_new(psize); |
3861 | stream_put(pkt, pfx, psize); | |
554cd77a | 3862 | |
d62a17ae | 3863 | /* Make prefix_rd */ |
3864 | prd.family = AF_UNSPEC; | |
3865 | prd.prefixlen = 64; | |
e121d831 QY |
3866 | |
3867 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3868 | |
3869 | /* Make EVPN prefix. */ | |
b03b8898 | 3870 | p.family = AF_EVPN; |
50f74cf1 | 3871 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3872 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3873 | ||
554cd77a | 3874 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3875 | if (attr) { |
e121d831 QY |
3876 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3877 | ||
74efb822 | 3878 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
3879 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
3880 | else | |
3881 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3882 | } else { |
3883 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3884 | } |
d62a17ae | 3885 | |
554cd77a | 3886 | /* Copy Ethernet Tag */ |
e121d831 | 3887 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3888 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3889 | |
3890 | /* Get the MAC Addr len */ | |
e121d831 | 3891 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3892 | |
3893 | /* Get the MAC Addr */ | |
28328ea9 | 3894 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3895 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3896 | } else { |
af4c2728 | 3897 | flog_err( |
e50f7cfd | 3898 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3899 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3900 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3901 | goto fail; |
d62a17ae | 3902 | } |
3903 | ||
3904 | ||
3905 | /* Get the IP. */ | |
e121d831 QY |
3906 | STREAM_GETC(pkt, ipaddr_len); |
3907 | ||
d62a17ae | 3908 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3909 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3910 | flog_err( |
e50f7cfd | 3911 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3912 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3913 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3914 | goto fail; |
d62a17ae | 3915 | } |
3916 | ||
3917 | if (ipaddr_len) { | |
3918 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3919 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3920 | ? IPADDR_V4 |
3921 | : IPADDR_V6; | |
e121d831 | 3922 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3923 | } |
d62a17ae | 3924 | |
b57ba6d2 | 3925 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3926 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3927 | num_labels++; |
e121d831 | 3928 | |
b57ba6d2 | 3929 | /* Do we have a second VNI? */ |
e121d831 | 3930 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3931 | num_labels++; |
e121d831 | 3932 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3933 | } |
d62a17ae | 3934 | |
3935 | /* Process the route. */ | |
3936 | if (attr) | |
3937 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3938 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3939 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3940 | else |
3941 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3942 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3943 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3944 | goto done; |
3945 | ||
3946 | fail: | |
3947 | stream_failure: | |
3948 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3949 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3950 | peer->bgp->vrf_id, peer->host); | |
3951 | ret = -1; | |
3952 | done: | |
3953 | stream_free(pkt); | |
d62a17ae | 3954 | return ret; |
128ea8ab | 3955 | } |
3956 | ||
3957 | /* | |
3958 | * Process received EVPN type-3 route (advertise or withdraw). | |
3959 | */ | |
d62a17ae | 3960 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3961 | struct attr *attr, uint8_t *pfx, int psize, |
3962 | uint32_t addpath_id) | |
d62a17ae | 3963 | { |
3964 | struct prefix_rd prd; | |
3965 | struct prefix_evpn p; | |
d7c0a89a | 3966 | uint8_t ipaddr_len; |
554cd77a | 3967 | uint32_t eth_tag; |
d62a17ae | 3968 | int ret; |
3969 | ||
3970 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3971 | * IP len (1) and IP (4 or 16). | |
3972 | */ | |
3973 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3974 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3975 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3976 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3977 | return -1; |
3978 | } | |
3979 | ||
7fd077aa | 3980 | /* If PMSI is present, log if it is anything other than IR. |
3981 | * Note: We just simply ignore the values as it is not clear if | |
3982 | * doing anything else is better. | |
3983 | */ | |
3984 | if (attr && | |
3985 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3986 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3987 | ||
3988 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3989 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3990 | flog_warn( | |
3991 | EC_BGP_EVPN_PMSI_PRESENT, | |
3992 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3993 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3994 | } |
3995 | } | |
3996 | ||
d62a17ae | 3997 | /* Make prefix_rd */ |
3998 | prd.family = AF_UNSPEC; | |
3999 | prd.prefixlen = 64; | |
4000 | memcpy(&prd.val, pfx, 8); | |
4001 | pfx += 8; | |
4002 | ||
4003 | /* Make EVPN prefix. */ | |
4004 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4005 | p.family = AF_EVPN; |
50f74cf1 | 4006 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4007 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4008 | ||
554cd77a VB |
4009 | /* Copy Ethernet Tag */ |
4010 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4011 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4012 | pfx += 4; |
4013 | ||
4014 | /* Get the IP. */ | |
4015 | ipaddr_len = *pfx++; | |
4016 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4017 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4018 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4019 | } else { |
af4c2728 | 4020 | flog_err( |
e50f7cfd | 4021 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4022 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4023 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4024 | return -1; | |
4025 | } | |
4026 | ||
4027 | /* Process the route. */ | |
4028 | if (attr) | |
4029 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4030 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4031 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4032 | else |
4033 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4034 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4035 | &prd, NULL, 0, NULL); |
d62a17ae | 4036 | return ret; |
128ea8ab | 4037 | } |
4038 | ||
4039 | /* | |
4040 | * Process received EVPN type-5 route (advertise or withdraw). | |
4041 | */ | |
d62a17ae | 4042 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4043 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4044 | uint32_t addpath_id) |
d62a17ae | 4045 | { |
4046 | struct prefix_rd prd; | |
4047 | struct prefix_evpn p; | |
4048 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4049 | uint8_t ippfx_len; |
4050 | uint32_t eth_tag; | |
b57ba6d2 | 4051 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4052 | int ret; |
c6ec0c74 | 4053 | afi_t gw_afi; |
66ff6089 | 4054 | bool is_valid_update = true; |
d62a17ae | 4055 | |
4056 | /* Type-5 route should be 34 or 58 bytes: | |
4057 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4058 | * GW (4 or 16) and VNI (3). | |
4059 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4060 | */ | |
4061 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4062 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4063 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4064 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4065 | return -1; |
4066 | } | |
4067 | ||
4068 | /* Make prefix_rd */ | |
4069 | prd.family = AF_UNSPEC; | |
4070 | prd.prefixlen = 64; | |
4071 | memcpy(&prd.val, pfx, 8); | |
4072 | pfx += 8; | |
4073 | ||
4074 | /* Make EVPN prefix. */ | |
4075 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4076 | p.family = AF_EVPN; |
50f74cf1 | 4077 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4078 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4079 | ||
4080 | /* Additional information outside of prefix - ESI and GW IP */ | |
4081 | memset(&evpn, 0, sizeof(evpn)); | |
4082 | ||
66ff6089 | 4083 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4084 | if (attr) |
66ff6089 | 4085 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4086 | pfx += ESI_BYTES; |
d62a17ae | 4087 | |
4088 | /* Fetch Ethernet Tag. */ | |
4089 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4090 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4091 | pfx += 4; |
4092 | ||
4093 | /* Fetch IP prefix length. */ | |
4094 | ippfx_len = *pfx++; | |
4095 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4096 | flog_err( |
e50f7cfd | 4097 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4098 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4099 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4100 | return -1; | |
4101 | } | |
3714a385 | 4102 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4103 | |
4104 | /* Determine IPv4 or IPv6 prefix */ | |
4105 | /* Since the address and GW are from the same family, this just becomes | |
4106 | * a simple check on the total size. | |
4107 | */ | |
4108 | if (psize == 34) { | |
3714a385 | 4109 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4110 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4111 | pfx += 4; |
4112 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
4113 | pfx += 4; | |
c6ec0c74 | 4114 | gw_afi = AF_INET; |
d62a17ae | 4115 | } else { |
3714a385 | 4116 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4117 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4118 | IPV6_MAX_BYTELEN); | |
4119 | pfx += IPV6_MAX_BYTELEN; | |
4120 | memcpy(&evpn.gw_ip.ipv6, pfx, IPV6_MAX_BYTELEN); | |
4121 | pfx += IPV6_MAX_BYTELEN; | |
c6ec0c74 | 4122 | gw_afi = AF_INET6; |
d62a17ae | 4123 | } |
4124 | ||
b57ba6d2 MK |
4125 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4126 | memset(&label, 0, sizeof(label)); | |
4127 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4128 | |
4129 | /* | |
4130 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4131 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4132 | * field | |
6b11bd8d | 4133 | */ |
d62a17ae | 4134 | |
66ff6089 AD |
4135 | /* |
4136 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4137 | * at the same time is should be treated as withdraw | |
4138 | */ | |
4139 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) | |
4140 | && !is_zero_gw_ip(&evpn.gw_ip, gw_afi)) { | |
4141 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4142 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4143 | peer->host); | |
4144 | is_valid_update = false; | |
4145 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4146 | evpn.type = OVERLAY_INDEX_ESI; | |
4147 | else if (!is_zero_gw_ip(&evpn.gw_ip, gw_afi)) | |
4148 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; | |
c6ec0c74 | 4149 | if (attr) { |
66ff6089 AD |
4150 | if (is_zero_mac(&attr->rmac) |
4151 | && !bgp_evpn_is_esi_valid(&evpn.eth_s_id) | |
4152 | && is_zero_gw_ip(&evpn.gw_ip, gw_afi) && label == 0) { | |
4153 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4154 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4155 | peer->host); | |
c6ec0c74 | 4156 | is_valid_update = false; |
66ff6089 | 4157 | } |
c6ec0c74 KA |
4158 | |
4159 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4160 | is_valid_update = false; | |
4161 | } | |
4162 | ||
d62a17ae | 4163 | /* Process the route. */ |
66ff6089 | 4164 | if (attr && is_valid_update) |
d62a17ae | 4165 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4166 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4167 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4168 | else { |
4169 | if (!is_valid_update) { | |
4170 | char attr_str[BUFSIZ] = {0}; | |
4171 | ||
4172 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4173 | zlog_warn( | |
4174 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4175 | peer->hostname, peer->bgp->vrf_id, &p, | |
4176 | attr_str); | |
4177 | } | |
d62a17ae | 4178 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4179 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4180 | &prd, &label, 1, &evpn); |
66ff6089 | 4181 | } |
d62a17ae | 4182 | |
4183 | return ret; | |
4184 | } | |
4185 | ||
5f040085 DS |
4186 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4187 | const struct prefix_rd *prd, | |
4188 | mpls_label_t *label, uint32_t num_labels, | |
4189 | struct attr *attr) | |
d62a17ae | 4190 | { |
4191 | int len; | |
4192 | char temp[16]; | |
5f040085 | 4193 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4194 | |
4195 | memset(&temp, 0, 16); | |
b03b8898 | 4196 | if (p->family != AF_EVPN) |
d62a17ae | 4197 | return; |
4198 | p_evpn_p = &(p->u.prefix_evpn); | |
4199 | ||
e9fc2840 | 4200 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4201 | IP and GW-IP have to be both ipv4 or ipv6 |
4202 | */ | |
3714a385 | 4203 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4204 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4205 | else |
e9fc2840 | 4206 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4207 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4208 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4209 | stream_put(s, prd->val, 8); | |
6c995628 | 4210 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4211 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4212 | else |
c44ab6f1 | 4213 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4214 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4215 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4216 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4217 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4218 | else |
3714a385 | 4219 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4220 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4221 | const struct bgp_route_evpn *evpn_overlay = |
4222 | bgp_attr_get_evpn_overlay(attr); | |
4223 | ||
3714a385 | 4224 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
6c924775 | 4225 | stream_put_ipv4(s, evpn_overlay->gw_ip.ipv4.s_addr); |
d62a17ae | 4226 | else |
6c924775 | 4227 | stream_put(s, &(evpn_overlay->gw_ip.ipv6), 16); |
d62a17ae | 4228 | } else { |
3714a385 | 4229 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4230 | stream_put_ipv4(s, 0); |
4231 | else | |
4232 | stream_put(s, &temp, 16); | |
4233 | } | |
4234 | ||
b57ba6d2 | 4235 | if (num_labels) |
d62a17ae | 4236 | stream_put(s, label, 3); |
4237 | else | |
4238 | stream_put3(s, 0); | |
128ea8ab | 4239 | } |
4240 | ||
4241 | /* | |
4242 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4243 | */ | |
e3b78da8 | 4244 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4245 | { |
e3b78da8 | 4246 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4247 | |
d62a17ae | 4248 | /* Remove EVPN routes and schedule for processing. */ |
4249 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4250 | |
d62a17ae | 4251 | /* Clear "live" flag and see if hash needs to be freed. */ |
4252 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4253 | if (!is_vni_configured(vpn)) | |
4254 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4255 | } |
4256 | ||
4257 | /* | |
4258 | * Free a VNI entry; iterator function called during cleanup. | |
4259 | */ | |
e3b78da8 | 4260 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4261 | { |
e3b78da8 | 4262 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4263 | |
d62a17ae | 4264 | delete_all_vni_routes(bgp, vpn); |
4265 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4266 | } |
4267 | ||
c581d8b0 MK |
4268 | /* |
4269 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4270 | */ | |
4271 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4272 | { | |
5e53dce3 | 4273 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4274 | |
c581d8b0 | 4275 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4276 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4277 | ||
4278 | /* Map RT to VRF */ | |
5e53dce3 T |
4279 | bgp_evpn = bgp_get_evpn(); |
4280 | if (!bgp_evpn) | |
10ebe1ab MK |
4281 | return; |
4282 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4283 | } |
4284 | ||
4285 | /* | |
4286 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4287 | */ | |
4288 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4289 | { | |
4290 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4291 | } | |
4292 | ||
4293 | /* | |
4294 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4295 | */ | |
4296 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4297 | { | |
4298 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4299 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4300 | } | |
4301 | ||
4302 | /* | |
4303 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4304 | */ | |
4305 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4306 | { | |
4307 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4308 | } | |
128ea8ab | 4309 | |
f1f8b53c MK |
4310 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4311 | { | |
5e53dce3 | 4312 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4313 | struct listnode *node = NULL; |
4314 | struct bgpevpn *vpn = NULL; | |
4315 | ||
5e53dce3 T |
4316 | bgp_evpn = bgp_get_evpn(); |
4317 | if (!bgp_evpn) | |
f1f8b53c MK |
4318 | return; |
4319 | ||
4992b4ae MK |
4320 | /* update all type-5 routes */ |
4321 | update_advertise_vrf_routes(bgp_vrf); | |
4322 | ||
4323 | /* update all type-2 routes */ | |
f1f8b53c | 4324 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4325 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4326 | } |
4327 | ||
bf1061d8 VB |
4328 | /* |
4329 | * Handle autort change for a given VNI. | |
4330 | */ | |
e3b78da8 | 4331 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4332 | { |
e3b78da8 | 4333 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4334 | |
bf1061d8 VB |
4335 | if (!is_import_rt_configured(vpn)) { |
4336 | if (is_vni_live(vpn)) | |
4337 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4338 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4339 | list_delete_all_node(vpn->import_rtl); |
4340 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4341 | if (is_vni_live(vpn)) | |
4342 | bgp_evpn_install_routes(bgp, vpn); | |
4343 | } | |
4344 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4345 | list_delete_all_node(vpn->export_rtl); |
4346 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4347 | if (is_vni_live(vpn)) | |
4348 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4349 | } | |
4350 | } | |
4351 | ||
128ea8ab | 4352 | /* |
4353 | * Public functions. | |
4354 | */ | |
4355 | ||
5424b7ba | 4356 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4357 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4358 | afi_t afi, safi_t safi) |
4359 | { | |
4360 | int ret = 0; | |
4361 | struct prefix_evpn evp; | |
5424b7ba | 4362 | |
31310b25 | 4363 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4364 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4365 | if (ret) |
af4c2728 | 4366 | flog_err( |
e50f7cfd | 4367 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4368 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4369 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4370 | } |
4371 | ||
342dd0c6 | 4372 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4373 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4374 | { |
4375 | struct bgp_table *table = NULL; | |
9bcb3eef | 4376 | struct bgp_dest *dest = NULL; |
40381db7 | 4377 | struct bgp_path_info *pi; |
342dd0c6 | 4378 | |
053905d2 | 4379 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4380 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4381 | /* Only care about "selected" routes. Also ensure that |
4382 | * these are routes that are injectable into EVPN. | |
4383 | */ | |
25f2ca53 | 4384 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4385 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4386 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4387 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4388 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4389 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4390 | safi); |
25f2ca53 | 4391 | break; |
4392 | } | |
4393 | } | |
4394 | } | |
5424b7ba | 4395 | } |
342dd0c6 | 4396 | |
5fd9c12b KA |
4397 | /* |
4398 | * evpn - enable advertisement of default g/w | |
4399 | */ | |
4400 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4401 | safi_t safi, bool add) | |
4402 | { | |
4403 | struct prefix ip_prefix; | |
4404 | ||
4405 | /* form the default prefix 0.0.0.0/0 */ | |
4406 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4407 | ip_prefix.family = afi2family(afi); | |
4408 | ||
4409 | if (add) { | |
4410 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4411 | NULL, afi, safi); | |
4412 | } else { | |
4413 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4414 | afi, safi); | |
4415 | } | |
4416 | } | |
4417 | ||
4418 | ||
2f69f6d3 | 4419 | /* |
4420 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4421 | * to this function correspond to those of the source IP prefix (best | |
4422 | * path in the case of the attr. In the case of a local prefix (when we | |
4423 | * are advertising local subnets), the src_attr will be NULL. | |
4424 | */ | |
bd494ec5 | 4425 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4426 | struct attr *src_attr, afi_t afi, |
4427 | safi_t safi) | |
5424b7ba MK |
4428 | { |
4429 | int ret = 0; | |
4430 | struct prefix_evpn evp; | |
7c82b312 | 4431 | |
31310b25 | 4432 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 4433 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 4434 | if (ret) |
e50f7cfd | 4435 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4436 | "%u: Failed to create type-5 route for prefix %pFX", |
4437 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4438 | } |
4439 | ||
2f69f6d3 | 4440 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4441 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4442 | * advertisement is enabled. | |
4443 | */ | |
996c9314 LB |
4444 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4445 | safi_t safi) | |
342dd0c6 | 4446 | { |
4447 | struct bgp_table *table = NULL; | |
9bcb3eef | 4448 | struct bgp_dest *dest = NULL; |
40381db7 | 4449 | struct bgp_path_info *pi; |
342dd0c6 | 4450 | |
053905d2 | 4451 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4452 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4453 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4454 | * attribute. Also, ensure that the route is injectable |
4455 | * into EVPN. | |
2f69f6d3 | 4456 | * TODO: Support for AddPath for EVPN. |
4457 | */ | |
9bcb3eef | 4458 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4459 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4460 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4461 | |
4462 | /* apply the route-map */ | |
4463 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4464 | route_map_result_t ret; |
e34291b8 | 4465 | struct bgp_path_info tmp_pi; |
4466 | struct bgp_path_info_extra tmp_pie; | |
4467 | struct attr tmp_attr; | |
4468 | ||
4469 | tmp_attr = *pi->attr; | |
4470 | ||
4471 | /* Fill temp path_info */ | |
9bcb3eef DS |
4472 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4473 | dest, pi, pi->peer, | |
4474 | &tmp_attr); | |
e34291b8 | 4475 | |
4476 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4477 | |
996c9314 LB |
4478 | ret = route_map_apply( |
4479 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4480 | .map, | |
9bcb3eef | 4481 | bgp_dest_get_prefix(dest), |
1782514f | 4482 | &tmp_pi); |
e34291b8 | 4483 | if (ret == RMAP_DENYMATCH) { |
4484 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4485 | continue; |
e34291b8 | 4486 | } |
4487 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4488 | bgp_vrf, |
9bcb3eef | 4489 | bgp_dest_get_prefix(dest), |
b54892e0 | 4490 | &tmp_attr, afi, safi); |
e34291b8 | 4491 | } else |
4492 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4493 | bgp_vrf, |
9bcb3eef | 4494 | bgp_dest_get_prefix(dest), |
b54892e0 | 4495 | pi->attr, afi, safi); |
2f69f6d3 | 4496 | break; |
4497 | } | |
4498 | } | |
31310b25 | 4499 | } |
342dd0c6 | 4500 | } |
4501 | ||
996c9314 | 4502 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4503 | { |
4504 | struct listnode *node, *nnode, *node_to_del; | |
4505 | struct ecommunity *ecom, *ecom_auto; | |
4506 | struct ecommunity_val eval; | |
4507 | ||
bf1061d8 VB |
4508 | if (bgp->advertise_autort_rfc8365) |
4509 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4510 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4511 | ||
4512 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4513 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4514 | node_to_del = NULL; |
4515 | ||
4516 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4517 | if (ecommunity_match(ecom, ecom_auto)) { | |
4518 | ecommunity_free(&ecom); | |
4519 | node_to_del = node; | |
4520 | } | |
4521 | } | |
4522 | ||
4523 | if (node_to_del) | |
4524 | list_delete_node(rtl, node_to_del); | |
4525 | ||
4526 | ecommunity_free(&ecom_auto); | |
4527 | } | |
4528 | ||
4529 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4530 | struct ecommunity *ecomadd) |
c581d8b0 | 4531 | { |
5ba238b7 | 4532 | /* uninstall routes from vrf */ |
3d0b43d7 | 4533 | if (is_l3vni_live(bgp_vrf)) |
4534 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4535 | |
4536 | /* Cleanup the RT to VRF mapping */ | |
4537 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4538 | ||
c581d8b0 MK |
4539 | /* Remove auto generated RT */ |
4540 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4541 | ||
4542 | /* Add the newly configured RT to RT list */ | |
4543 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4544 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4545 | ||
3d0b43d7 | 4546 | /* map VRF to its RTs and install routes matching the new RTs */ |
4547 | if (is_l3vni_live(bgp_vrf)) { | |
4548 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4549 | install_routes_for_vrf(bgp_vrf); | |
4550 | } | |
c581d8b0 MK |
4551 | } |
4552 | ||
4553 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4554 | struct ecommunity *ecomdel) | |
4555 | { | |
4556 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4557 | struct ecommunity *ecom = NULL; | |
4558 | ||
5ba238b7 | 4559 | /* uninstall routes from vrf */ |
3d0b43d7 | 4560 | if (is_l3vni_live(bgp_vrf)) |
4561 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4562 | |
4563 | /* Cleanup the RT to VRF mapping */ | |
4564 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4565 | ||
c581d8b0 MK |
4566 | /* remove the RT from the RT list */ |
4567 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4568 | if (ecommunity_match(ecom, ecomdel)) { | |
4569 | ecommunity_free(&ecom); | |
4570 | node_to_del = node; | |
4571 | break; | |
4572 | } | |
4573 | } | |
4574 | ||
4575 | if (node_to_del) | |
4576 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4577 | ||
b3a4db3d | 4578 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4579 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4580 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4581 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4582 | if (is_l3vni_live(bgp_vrf)) |
4583 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4584 | } |
4585 | ||
3d0b43d7 | 4586 | /* map VRFs to its RTs and install routes matching this new RT */ |
4587 | if (is_l3vni_live(bgp_vrf)) { | |
4588 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4589 | install_routes_for_vrf(bgp_vrf); | |
4590 | } | |
c581d8b0 MK |
4591 | } |
4592 | ||
4593 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4594 | struct ecommunity *ecomadd) | |
4595 | { | |
4596 | /* remove auto-generated RT */ | |
4597 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4598 | ||
4599 | /* Add the new RT to the RT list */ | |
4600 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4601 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4602 | ||
ebdc9e64 AD |
4603 | if (is_l3vni_live(bgp_vrf)) |
4604 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4605 | } |
4606 | ||
4607 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4608 | struct ecommunity *ecomdel) | |
4609 | { | |
4610 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4611 | struct ecommunity *ecom = NULL; | |
4612 | ||
4613 | /* Remove the RT from the RT list */ | |
4614 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4615 | if (ecommunity_match(ecom, ecomdel)) { | |
4616 | ecommunity_free(&ecom); | |
4617 | node_to_del = node; | |
4618 | break; | |
4619 | } | |
4620 | } | |
4621 | ||
4622 | if (node_to_del) | |
4623 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4624 | ||
1525e99f DS |
4625 | /* |
4626 | * Temporary assert to make SA happy. | |
4627 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4628 | * which means that SA is going to complain about | |
4629 | * the list_isempty call, which doesn't NULL check. | |
4630 | * So until we get this situation cleaned up, here | |
4631 | * we are. | |
4632 | */ | |
4633 | assert(bgp_vrf->vrf_export_rtl); | |
4634 | ||
c581d8b0 | 4635 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4636 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4637 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4638 | if (is_l3vni_live(bgp_vrf)) |
4639 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4640 | } |
4641 | ||
ebdc9e64 AD |
4642 | if (is_l3vni_live(bgp_vrf)) |
4643 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4644 | } |
4645 | ||
2d48ee25 | 4646 | /* |
4647 | * Handle change to BGP router id. This is invoked twice by the change | |
4648 | * handler, first before the router id has been changed and then after | |
4649 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4650 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4651 | * will result in the routes being re-advertised. |
4652 | */ | |
d62a17ae | 4653 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4654 | { |
5394a276 CS |
4655 | struct listnode *node; |
4656 | struct bgp *bgp_vrf; | |
4657 | ||
676f83b9 | 4658 | if (withdraw) { |
4659 | ||
4660 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4661 | stored in the global table for this vrf |
4662 | */ | |
80b140af | 4663 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4664 | |
4665 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4666 | * L2-VNIs |
4667 | */ | |
d62a17ae | 4668 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4669 | (void (*)(struct hash_bucket *, |
d62a17ae | 4670 | void *))withdraw_router_id_vni, |
4671 | bgp); | |
5394a276 CS |
4672 | |
4673 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4674 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4675 | if (bgp_vrf->evpn_info->advertise_pip && | |
4676 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4677 | == INADDR_ANY)) | |
4678 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4679 | = INADDR_ANY; | |
4680 | } | |
4681 | } | |
676f83b9 | 4682 | } else { |
4683 | ||
5394a276 CS |
4684 | /* Assign new default instance router-id */ |
4685 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4686 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4687 | if (bgp_vrf->evpn_info->advertise_pip && | |
4688 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4689 | == INADDR_ANY)) { | |
4690 | bgp_vrf->evpn_info->pip_ip = | |
4691 | bgp->router_id; | |
4692 | /* advertise type-5 routes with | |
4693 | * new nexthop | |
4694 | */ | |
4695 | update_advertise_vrf_routes(bgp_vrf); | |
4696 | } | |
4697 | } | |
4698 | } | |
4699 | ||
676f83b9 | 4700 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4701 | * RD |
4702 | */ | |
80b140af | 4703 | update_router_id_vrf(bgp); |
676f83b9 | 4704 | |
4705 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4706 | * new RD |
4707 | */ | |
d62a17ae | 4708 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4709 | (void (*)(struct hash_bucket *, |
d62a17ae | 4710 | void *))update_router_id_vni, |
4711 | bgp); | |
676f83b9 | 4712 | } |
2d48ee25 | 4713 | } |
4714 | ||
bf1061d8 VB |
4715 | /* |
4716 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4717 | */ | |
4718 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4719 | { | |
4720 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4721 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4722 | void*))update_autort_vni, |
4723 | bgp); | |
4724 | } | |
4725 | ||
90e60aa7 | 4726 | /* |
4727 | * Handle change to export RT - update and advertise local routes. | |
4728 | */ | |
d62a17ae | 4729 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4730 | { |
d62a17ae | 4731 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4732 | } |
4733 | ||
996c9314 | 4734 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4735 | { |
4736 | if (withdraw) | |
4737 | delete_withdraw_vrf_routes(bgp_vrf); | |
4738 | else | |
4739 | update_advertise_vrf_routes(bgp_vrf); | |
4740 | } | |
4741 | ||
90e60aa7 | 4742 | /* |
4743 | * Handle change to RD. This is invoked twice by the change handler, | |
4744 | * first before the RD has been changed and then after the RD has | |
4745 | * been changed. The first invocation will result in local routes | |
4746 | * of this VNI being deleted and withdrawn and the next will result | |
4747 | * in the routes being re-advertised. | |
4748 | */ | |
d62a17ae | 4749 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4750 | int withdraw) | |
90e60aa7 | 4751 | { |
d62a17ae | 4752 | if (withdraw) |
4753 | delete_withdraw_vni_routes(bgp, vpn); | |
4754 | else | |
4755 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4756 | } |
4757 | ||
4758 | /* | |
4759 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4760 | */ | |
d62a17ae | 4761 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4762 | { |
d62a17ae | 4763 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4764 | } |
4765 | ||
4766 | /* | |
4767 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4768 | * to Import RT. | |
4769 | */ | |
d62a17ae | 4770 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4771 | { |
d62a17ae | 4772 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4773 | } |
4774 | ||
b16031a2 | 4775 | /* |
b57ba6d2 | 4776 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4777 | */ |
d7c0a89a | 4778 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4779 | int len) |
b16031a2 | 4780 | { |
b57ba6d2 | 4781 | vni_t vni1, vni2; |
b16031a2 | 4782 | |
b57ba6d2 MK |
4783 | vni1 = label2vni(label); |
4784 | if (num_labels == 2) { | |
996c9314 | 4785 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4786 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4787 | } else | |
4788 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4789 | return buf; |
b16031a2 | 4790 | } |
4791 | ||
9c92b5f7 MK |
4792 | /* |
4793 | * Function to convert evpn route to json format. | |
4794 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4795 | */ | |
bd494ec5 | 4796 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4797 | { |
b682f6de | 4798 | char buf1[ETHER_ADDR_STRLEN]; |
4799 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4800 | uint8_t family; |
4801 | uint8_t prefixlen; | |
9c92b5f7 | 4802 | |
b682f6de | 4803 | if (!json) |
4804 | return; | |
9c92b5f7 | 4805 | |
44c69747 LK |
4806 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4807 | ||
4808 | switch (p->prefix.route_type) { | |
4809 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4810 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4811 | p->prefix.macip_addr.eth_tag); |
4812 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4813 | json_object_string_add(json, "mac", | |
4814 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4815 | sizeof(buf1))); | |
4816 | ||
4817 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4818 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4819 | AF_INET6; | |
4820 | prefixlen = (family == AF_INET) ? | |
4821 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4822 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4823 | buf2, PREFIX2STR_BUFFER); | |
4824 | json_object_int_add(json, "ipLen", prefixlen); | |
4825 | json_object_string_add(json, "ip", buf2); | |
4826 | } | |
4827 | break; | |
dff8f48d | 4828 | |
44c69747 LK |
4829 | case BGP_EVPN_IMET_ROUTE: |
4830 | json_object_int_add(json, "ethTag", | |
4831 | p->prefix.imet_addr.eth_tag); | |
4832 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4833 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4834 | IPV6_MAX_BITLEN; | |
4835 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4836 | PREFIX2STR_BUFFER); | |
4837 | json_object_int_add(json, "ipLen", prefixlen); | |
4838 | json_object_string_add(json, "ip", buf2); | |
4839 | break; | |
dff8f48d | 4840 | |
44c69747 LK |
4841 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4842 | json_object_int_add(json, "ethTag", | |
4843 | p->prefix.prefix_addr.eth_tag); | |
4844 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4845 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4846 | buf2, sizeof(buf2)); | |
4847 | json_object_int_add(json, "ipLen", | |
4848 | p->prefix.prefix_addr.ip_prefix_length); | |
4849 | json_object_string_add(json, "ip", buf2); | |
4850 | break; | |
4851 | ||
4852 | default: | |
4853 | break; | |
dff8f48d | 4854 | } |
9c92b5f7 MK |
4855 | } |
4856 | ||
128ea8ab | 4857 | /* |
4858 | * Encode EVPN prefix in Update (MP_REACH) | |
4859 | */ | |
5f040085 DS |
4860 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4861 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4862 | uint32_t num_labels, struct attr *attr, |
4863 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4864 | { |
4865 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4866 | int len, ipa_len = 0; |
d62a17ae | 4867 | |
4868 | if (addpath_encode) | |
4869 | stream_putl(s, addpath_tx_id); | |
4870 | ||
4871 | /* Route type */ | |
4872 | stream_putc(s, evp->prefix.route_type); | |
4873 | ||
4874 | switch (evp->prefix.route_type) { | |
4875 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4876 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4877 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4878 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4879 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4880 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4881 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4882 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4883 | len += 3; | |
4884 | stream_putc(s, len); | |
996c9314 | 4885 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4886 | if (attr) |
c44ab6f1 | 4887 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4888 | else |
4889 | stream_put(s, 0, 10); | |
3714a385 | 4890 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4891 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4892 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4893 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4894 | if (ipa_len) /* IP */ | |
4895 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4896 | ipa_len); | |
b57ba6d2 MK |
4897 | /* 1st label is the L2 VNI */ |
4898 | stream_put(s, label, BGP_LABEL_BYTES); | |
4899 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4900 | if (ipa_len && num_labels > 1) | |
996c9314 | 4901 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4902 | break; |
4903 | ||
4904 | case BGP_EVPN_IMET_ROUTE: | |
4905 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4906 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4907 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4908 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4909 | /* Originating Router's IP Addr */ | |
3714a385 | 4910 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4911 | break; |
4912 | ||
50f74cf1 | 4913 | case BGP_EVPN_ES_ROUTE: |
4914 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4915 | stream_put(s, prd->val, 8); /* RD */ | |
4916 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4917 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4918 | /* VTEP IP */ |
4919 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4920 | break; |
4921 | ||
c44ab6f1 AK |
4922 | case BGP_EVPN_AD_ROUTE: |
4923 | /* RD, ESI, EthTag, 1 VNI */ | |
4924 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4925 | stream_putc(s, len); | |
4926 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4927 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4928 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4929 | stream_put(s, label, BGP_LABEL_BYTES); | |
4930 | break; | |
4931 | ||
d62a17ae | 4932 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4933 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4934 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4935 | break; |
4936 | ||
4937 | default: | |
4938 | break; | |
4939 | } | |
4940 | } | |
4941 | ||
4942 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4943 | struct bgp_nlri *packet, int withdraw) | |
4944 | { | |
d7c0a89a QY |
4945 | uint8_t *pnt; |
4946 | uint8_t *lim; | |
d62a17ae | 4947 | afi_t afi; |
4948 | safi_t safi; | |
d7c0a89a | 4949 | uint32_t addpath_id; |
d62a17ae | 4950 | int addpath_encoded; |
4951 | int psize = 0; | |
d7c0a89a | 4952 | uint8_t rtype; |
d62a17ae | 4953 | struct prefix p; |
4954 | ||
d62a17ae | 4955 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4956 | pnt = packet->nlri; | |
4957 | lim = pnt + packet->length; | |
4958 | afi = packet->afi; | |
4959 | safi = packet->safi; | |
4960 | addpath_id = 0; | |
4961 | ||
4962 | addpath_encoded = | |
4963 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4964 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4965 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4966 | ||
4967 | for (; pnt < lim; pnt += psize) { | |
4968 | /* Clear prefix structure. */ | |
4969 | memset(&p, 0, sizeof(struct prefix)); | |
4970 | ||
4971 | /* Deal with path-id if AddPath is supported. */ | |
4972 | if (addpath_encoded) { | |
4973 | /* When packet overflow occurs return immediately. */ | |
4974 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4975 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4976 | |
a3a850a1 S |
4977 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4978 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4979 | pnt += BGP_ADDPATH_ID_LEN; |
4980 | } | |
4981 | ||
4982 | /* All EVPN NLRI types start with type and length. */ | |
4983 | if (pnt + 2 > lim) | |
513386b5 | 4984 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4985 | |
4986 | rtype = *pnt++; | |
3f54c705 | 4987 | psize = *pnt++; |
d62a17ae | 4988 | |
4989 | /* When packet overflow occur return immediately. */ | |
4990 | if (pnt + psize > lim) | |
513386b5 | 4991 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4992 | |
4993 | switch (rtype) { | |
4994 | case BGP_EVPN_MAC_IP_ROUTE: | |
4995 | if (process_type2_route(peer, afi, safi, | |
4996 | withdraw ? NULL : attr, pnt, | |
4997 | psize, addpath_id)) { | |
af4c2728 | 4998 | flog_err( |
e50f7cfd | 4999 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5000 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5001 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5002 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5003 | } |
5004 | break; | |
5005 | ||
5006 | case BGP_EVPN_IMET_ROUTE: | |
5007 | if (process_type3_route(peer, afi, safi, | |
5008 | withdraw ? NULL : attr, pnt, | |
5009 | psize, addpath_id)) { | |
af4c2728 | 5010 | flog_err( |
e50f7cfd | 5011 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5012 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5013 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5014 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5015 | } |
5016 | break; | |
5017 | ||
50f74cf1 | 5018 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5019 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5020 | withdraw ? NULL : attr, pnt, |
5021 | psize, addpath_id)) { | |
af4c2728 | 5022 | flog_err( |
e50f7cfd | 5023 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5024 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5025 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5026 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5027 | } |
5028 | break; | |
5029 | ||
c44ab6f1 AK |
5030 | case BGP_EVPN_AD_ROUTE: |
5031 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5032 | withdraw ? NULL : attr, pnt, | |
5033 | psize, addpath_id)) { | |
5034 | flog_err( | |
5035 | EC_BGP_PKT_PROCESS, | |
5036 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5037 | peer->bgp->vrf_id, peer->host, psize); | |
5038 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5039 | } | |
5040 | break; | |
5041 | ||
d62a17ae | 5042 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5043 | if (process_type5_route(peer, afi, safi, |
5044 | withdraw ? NULL : attr, pnt, | |
5045 | psize, addpath_id)) { | |
af4c2728 | 5046 | flog_err( |
e50f7cfd | 5047 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5048 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5049 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5050 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5051 | } |
5052 | break; | |
5053 | ||
5054 | default: | |
5055 | break; | |
5056 | } | |
5057 | } | |
5058 | ||
5059 | /* Packet length consistency check. */ | |
5060 | if (pnt != lim) | |
513386b5 | 5061 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5062 | |
513386b5 | 5063 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5064 | } |
5065 | ||
10ebe1ab MK |
5066 | /* |
5067 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5068 | * The mapping will be used during route processing. | |
5069 | * bgp_def: default bgp instance | |
5070 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5071 | */ | |
5072 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5073 | { | |
f6e07e1b | 5074 | uint32_t i = 0; |
10ebe1ab MK |
5075 | struct ecommunity_val *eval = NULL; |
5076 | struct listnode *node = NULL, *nnode = NULL; | |
5077 | struct ecommunity *ecom = NULL; | |
5078 | ||
5079 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5080 | for (i = 0; i < ecom->size; i++) { | |
5081 | eval = (struct ecommunity_val *)(ecom->val | |
5082 | + (i | |
5083 | * ECOMMUNITY_SIZE)); | |
5084 | map_vrf_to_rt(bgp_vrf, eval); | |
5085 | } | |
5086 | } | |
5087 | } | |
5088 | ||
5089 | /* | |
5090 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5091 | */ | |
5092 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5093 | { | |
f6e07e1b | 5094 | uint32_t i; |
10ebe1ab MK |
5095 | struct ecommunity_val *eval; |
5096 | struct listnode *node, *nnode; | |
5097 | struct ecommunity *ecom; | |
5098 | ||
5099 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5100 | for (i = 0; i < ecom->size; i++) { | |
5101 | struct vrf_irt_node *irt; | |
5102 | struct ecommunity_val eval_tmp; | |
5103 | ||
5104 | eval = (struct ecommunity_val *)(ecom->val | |
5105 | + (i | |
5106 | * ECOMMUNITY_SIZE)); | |
5107 | /* If using "automatic" RT, we only care about the | |
5108 | * local-admin sub-field. | |
5109 | * This is to facilitate using VNI as the RT for EBGP | |
5110 | * peering too. | |
5111 | */ | |
5112 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5113 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5114 | BGP_VRF_IMPORT_RT_CFGD)) | |
5115 | mask_ecom_global_admin(&eval_tmp, eval); | |
5116 | ||
5117 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5118 | if (irt) | |
5119 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5120 | } | |
5121 | } | |
5122 | } | |
5123 | ||
5124 | ||
128ea8ab | 5125 | /* |
5126 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5127 | * The mapping will be used during route processing. | |
5128 | */ | |
d62a17ae | 5129 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5130 | { |
f6e07e1b | 5131 | uint32_t i; |
d62a17ae | 5132 | struct ecommunity_val *eval; |
5133 | struct listnode *node, *nnode; | |
5134 | struct ecommunity *ecom; | |
128ea8ab | 5135 | |
d62a17ae | 5136 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5137 | for (i = 0; i < ecom->size; i++) { | |
5138 | eval = (struct ecommunity_val *)(ecom->val | |
5139 | + (i | |
5140 | * ECOMMUNITY_SIZE)); | |
5141 | map_vni_to_rt(bgp, vpn, eval); | |
5142 | } | |
5143 | } | |
128ea8ab | 5144 | } |
5145 | ||
5146 | /* | |
5147 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5148 | */ | |
d62a17ae | 5149 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5150 | { |
f6e07e1b | 5151 | uint32_t i; |
d62a17ae | 5152 | struct ecommunity_val *eval; |
5153 | struct listnode *node, *nnode; | |
5154 | struct ecommunity *ecom; | |
128ea8ab | 5155 | |
d62a17ae | 5156 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5157 | for (i = 0; i < ecom->size; i++) { | |
5158 | struct irt_node *irt; | |
5159 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5160 | |
d62a17ae | 5161 | eval = (struct ecommunity_val *)(ecom->val |
5162 | + (i | |
5163 | * ECOMMUNITY_SIZE)); | |
5164 | /* If using "automatic" RT, we only care about the | |
5165 | * local-admin sub-field. | |
5166 | * This is to facilitate using VNI as the RT for EBGP | |
5167 | * peering too. | |
5168 | */ | |
5169 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5170 | if (!is_import_rt_configured(vpn)) | |
5171 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5172 | |
d62a17ae | 5173 | irt = lookup_import_rt(bgp, &eval_tmp); |
5174 | if (irt) | |
5175 | unmap_vni_from_rt(bgp, vpn, irt); | |
5176 | } | |
5177 | } | |
128ea8ab | 5178 | } |
5179 | ||
5180 | /* | |
5181 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5182 | * The mapping will be used during route processing. | |
5183 | */ | |
d62a17ae | 5184 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5185 | { |
c581d8b0 | 5186 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5187 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5188 | |
d62a17ae | 5189 | /* Map RT to VNI */ |
5190 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5191 | } |
5192 | ||
5193 | /* | |
5194 | * Derive Export RT automatically for VNI. | |
5195 | */ | |
d62a17ae | 5196 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5197 | { |
c581d8b0 | 5198 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5199 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5200 | } |
5201 | ||
676f83b9 | 5202 | /* |
5203 | * Derive RD automatically for VNI using passed information - it | |
5204 | * is of the form RouterId:unique-id-for-vni. | |
5205 | */ | |
5206 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5207 | { | |
9e97ff03 CS |
5208 | if (is_vrf_rd_configured(bgp)) |
5209 | return; | |
5210 | ||
92708db6 | 5211 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5212 | } |
5213 | ||
128ea8ab | 5214 | /* |
5215 | * Derive RD automatically for VNI using passed information - it | |
5216 | * is of the form RouterId:unique-id-for-vni. | |
5217 | */ | |
d62a17ae | 5218 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5219 | { |
c44ab6f1 | 5220 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5221 | |
d62a17ae | 5222 | vpn->prd.family = AF_UNSPEC; |
5223 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5224 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5225 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5226 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5227 | } |
5228 | ||
7df407ed CS |
5229 | /* |
5230 | * Lookup L3-VNI | |
5231 | */ | |
5232 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5233 | { | |
5234 | struct list *inst = bm->bgp; | |
5235 | struct listnode *node; | |
5236 | struct bgp *bgp_vrf; | |
5237 | ||
5238 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5239 | if (bgp_vrf->l3vni == vni) | |
5240 | return true; | |
5241 | } | |
5242 | ||
5243 | return false; | |
5244 | } | |
5245 | ||
128ea8ab | 5246 | /* |
5247 | * Lookup VNI. | |
5248 | */ | |
d62a17ae | 5249 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5250 | { |
d62a17ae | 5251 | struct bgpevpn *vpn; |
5252 | struct bgpevpn tmp; | |
128ea8ab | 5253 | |
d62a17ae | 5254 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5255 | tmp.vni = vni; | |
5256 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5257 | return vpn; | |
128ea8ab | 5258 | } |
5259 | ||
5260 | /* | |
5261 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5262 | */ | |
d62a17ae | 5263 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5264 | struct in_addr originator_ip, |
5265 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5266 | struct in_addr mcast_grp, |
5267 | ifindex_t svi_ifindex) | |
128ea8ab | 5268 | { |
d62a17ae | 5269 | struct bgpevpn *vpn; |
128ea8ab | 5270 | |
d62a17ae | 5271 | if (!bgp) |
5272 | return NULL; | |
128ea8ab | 5273 | |
d62a17ae | 5274 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5275 | |
d62a17ae | 5276 | /* Set values - RD and RT set to defaults. */ |
5277 | vpn->vni = vni; | |
5278 | vpn->originator_ip = originator_ip; | |
29c53922 | 5279 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5280 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5281 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5282 | |
d62a17ae | 5283 | /* Initialize route-target import and export lists */ |
5284 | vpn->import_rtl = list_new(); | |
5285 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5286 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5287 | vpn->export_rtl = list_new(); |
5288 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5289 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5290 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5291 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5292 | |
d62a17ae | 5293 | /* Initialize EVPN route table. */ |
960035b2 | 5294 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5295 | |
d62a17ae | 5296 | /* Add to hash */ |
5297 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5298 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5299 | return NULL; | |
5300 | } | |
6a8657d0 | 5301 | |
021b6596 AD |
5302 | bgp_evpn_remote_ip_hash_init(vpn); |
5303 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5304 | ||
6a8657d0 MK |
5305 | /* add to l2vni list on corresponding vrf */ |
5306 | bgpevpn_link_to_l3vni(vpn); | |
5307 | ||
c44ab6f1 AK |
5308 | bgp_evpn_vni_es_init(vpn); |
5309 | ||
d62a17ae | 5310 | QOBJ_REG(vpn, bgpevpn); |
5311 | return vpn; | |
128ea8ab | 5312 | } |
5313 | ||
5314 | /* | |
5315 | * Free a given VPN - called in multiple scenarios such as zebra | |
5316 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5317 | * This just frees appropriate memory, caller should have taken other | |
5318 | * needed actions. | |
5319 | */ | |
d62a17ae | 5320 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5321 | { |
021b6596 | 5322 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 5323 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5324 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5325 | bgp_table_unlock(vpn->route_table); |
5326 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5327 | list_delete(&vpn->import_rtl); |
5328 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5329 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 5330 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 5331 | hash_release(bgp->vnihash, vpn); |
5332 | QOBJ_UNREG(vpn); | |
5333 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5334 | } |
5335 | ||
50f74cf1 | 5336 | /* |
5337 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5338 | */ |
d62a17ae | 5339 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5340 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5341 | { |
40381db7 | 5342 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5343 | } |
5344 | ||
5345 | /* | |
50f74cf1 | 5346 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5347 | */ |
d62a17ae | 5348 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5349 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5350 | { |
40381db7 | 5351 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5352 | } |
5353 | ||
db0e1937 MK |
5354 | /* filter routes which have martian next hops */ |
5355 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5356 | { | |
0291c246 MK |
5357 | afi_t afi; |
5358 | safi_t safi; | |
9bcb3eef | 5359 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5360 | struct bgp_table *table; |
40381db7 | 5361 | struct bgp_path_info *pi; |
db0e1937 MK |
5362 | |
5363 | afi = AFI_L2VPN; | |
5364 | safi = SAFI_EVPN; | |
5365 | ||
5366 | /* Walk entire global routing table and evaluate routes which could be | |
5367 | * imported into this VPN. Note that we cannot just look at the routes | |
5368 | * for the VNI's RD - | |
5369 | * remote routes applicable for this VNI could have any RD. | |
5370 | */ | |
5371 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5372 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5373 | rd_dest = bgp_route_next(rd_dest)) { | |
5374 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5375 | if (!table) |
5376 | continue; | |
5377 | ||
9bcb3eef DS |
5378 | for (dest = bgp_table_top(table); dest; |
5379 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5380 | |
9bcb3eef | 5381 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5382 | pi = pi->next) { |
db0e1937 MK |
5383 | |
5384 | /* Consider "valid" remote routes applicable for | |
5385 | * this VNI. */ | |
40381db7 DS |
5386 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5387 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5388 | continue; |
9bcb3eef DS |
5389 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5390 | pi->sub_type, pi->attr, | |
5391 | dest)) { | |
b54892e0 | 5392 | const struct prefix *p = |
9bcb3eef | 5393 | bgp_dest_get_prefix(dest); |
db0e1937 | 5394 | |
b54892e0 DS |
5395 | if (bgp_debug_update(pi->peer, p, NULL, |
5396 | 1)) { | |
5397 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5398 | |
b54892e0 | 5399 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5400 | attr_str, |
5401 | sizeof(attr_str)); | |
db0e1937 | 5402 | |
db0e1937 | 5403 | zlog_debug( |
56ca3b5b | 5404 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5405 | bgp->vrf_id, dest, |
db0e1937 | 5406 | attr_str); |
b54892e0 | 5407 | } |
db0e1937 | 5408 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5409 | p, pi); |
db0e1937 | 5410 | |
9bcb3eef | 5411 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5412 | safi); |
db0e1937 | 5413 | } |
db0e1937 MK |
5414 | } |
5415 | } | |
5416 | } | |
5417 | ||
5418 | return 0; | |
5419 | } | |
5420 | ||
128ea8ab | 5421 | /* |
5422 | * Handle del of a local MACIP. | |
5423 | */ | |
d62a17ae | 5424 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5425 | struct ipaddr *ip, int state) |
128ea8ab | 5426 | { |
d62a17ae | 5427 | struct bgpevpn *vpn; |
5428 | struct prefix_evpn p; | |
9bcb3eef | 5429 | struct bgp_dest *dest; |
128ea8ab | 5430 | |
d62a17ae | 5431 | /* Lookup VNI hash - should exist. */ |
5432 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5433 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5434 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5435 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5436 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5437 | return -1; | |
5438 | } | |
128ea8ab | 5439 | |
d62a17ae | 5440 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5441 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5442 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5443 | delete_evpn_route(bgp, vpn, &p); | |
5444 | } else { | |
5445 | /* Re-instate the current remote best path if any */ | |
9bcb3eef | 5446 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
e71ad4b6 | 5447 | if (dest) { |
9bcb3eef | 5448 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
5449 | bgp_dest_unlock_node(dest); |
5450 | } | |
ec0ab544 | 5451 | } |
128ea8ab | 5452 | |
d62a17ae | 5453 | return 0; |
128ea8ab | 5454 | } |
5455 | ||
5456 | /* | |
5457 | * Handle add of a local MACIP. | |
5458 | */ | |
d62a17ae | 5459 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5460 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5461 | { |
d62a17ae | 5462 | struct bgpevpn *vpn; |
5463 | struct prefix_evpn p; | |
128ea8ab | 5464 | |
d62a17ae | 5465 | /* Lookup VNI hash - should exist. */ |
5466 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5467 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5468 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5469 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5470 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5471 | return -1; | |
5472 | } | |
128ea8ab | 5473 | |
d62a17ae | 5474 | /* Create EVPN type-2 route and schedule for processing. */ |
5475 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5476 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 5477 | flog_err( |
e50f7cfd | 5478 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 5479 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 5480 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5481 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5482 | ? "sticky gateway" | |
5483 | : "", | |
c0d72166 | 5484 | mac, ip, flags); |
d62a17ae | 5485 | return -1; |
5486 | } | |
128ea8ab | 5487 | |
d62a17ae | 5488 | return 0; |
128ea8ab | 5489 | } |
5490 | ||
e3b78da8 | 5491 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5492 | struct bgp *bgp_vrf) |
5493 | { | |
e3b78da8 | 5494 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5495 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5496 | |
5e53dce3 T |
5497 | bgp_evpn = bgp_get_evpn(); |
5498 | assert(bgp_evpn); | |
6a8657d0 | 5499 | |
6a8657d0 MK |
5500 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5501 | bgpevpn_link_to_l3vni(vpn); | |
5502 | } | |
5503 | ||
14e814ea CS |
5504 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5505 | struct ethaddr *svi_rmac, | |
5506 | struct ethaddr *vrr_rmac, | |
0483af6e | 5507 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5508 | ifindex_t svi_ifindex, |
5509 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5510 | { |
5511 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5512 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5513 | struct listnode *node = NULL; |
5514 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5515 | as_t as = 0; |
5516 | ||
3621ebc5 | 5517 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5518 | * auto-creatio |
5519 | */ | |
5e53dce3 T |
5520 | bgp_evpn = bgp_get_evpn(); |
5521 | if (!bgp_evpn) { | |
af4c2728 | 5522 | flog_err( |
e50f7cfd | 5523 | EC_BGP_NO_DFLT, |
3621ebc5 | 5524 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5525 | l3vni); |
fe1dc5a3 MK |
5526 | return -1; |
5527 | } | |
5e53dce3 | 5528 | as = bgp_evpn->as; |
fe1dc5a3 | 5529 | |
0437e105 | 5530 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5531 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5532 | if (!bgp_vrf) { |
5533 | ||
5534 | int ret = 0; | |
5535 | ||
5d5393b9 DL |
5536 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5537 | vrf_id == VRF_DEFAULT | |
5538 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5539 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5540 | switch (ret) { |
fe1dc5a3 | 5541 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5542 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
5543 | "BGP instance is already running; AS is %u", |
5544 | as); | |
fe1dc5a3 MK |
5545 | return -1; |
5546 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5547 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 5548 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
5549 | return -1; |
5550 | } | |
5551 | ||
5552 | /* mark as auto created */ | |
5553 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5554 | } | |
5555 | ||
0483af6e | 5556 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5557 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5558 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5559 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5560 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5561 | |
14e814ea CS |
5562 | /* copy anycast MAC from VRR MAC */ |
5563 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5564 | /* copy sys RMAC from SVI MAC */ | |
5565 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5566 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5567 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5568 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5569 | ||
c0d72166 DS |
5570 | if (bgp_debug_zebra(NULL)) |
5571 | zlog_debug( | |
5572 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
5573 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
5574 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5575 | : "disable", | |
5576 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
5577 | &bgp_vrf->evpn_info->pip_rmac_static, | |
5578 | is_anycast_mac ? "Enable" : "Disable"); | |
5579 | ||
c48d9f5f | 5580 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5581 | if (filter) { |
c48d9f5f MK |
5582 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5583 | ||
10f70510 AD |
5584 | /* |
5585 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5586 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5587 | * that explicitly. | |
5588 | */ | |
5589 | } else { | |
5590 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5591 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5592 | ||
5593 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5594 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5595 | ||
5596 | /* | |
5597 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5598 | * flag, update all MACIP routes in this VNI | |
5599 | */ | |
5600 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5601 | update_all_type2_routes(bgp_evpn, vpn); | |
5602 | } | |
5603 | } | |
5604 | } | |
5605 | ||
530e8a6e | 5606 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5607 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5608 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5609 | else |
5610 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5611 | ||
c581d8b0 MK |
5612 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5613 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5614 | |
5615 | /* auto derive RD */ | |
676f83b9 | 5616 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5617 | |
6a8657d0 | 5618 | /* link all corresponding l2vnis */ |
5e53dce3 | 5619 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5620 | (void (*)(struct hash_bucket *, |
996c9314 | 5621 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5622 | bgp_vrf); |
5623 | ||
c48d9f5f MK |
5624 | /* Only update all corresponding type-2 routes if we are advertising two |
5625 | * labels along with type-2 routes | |
5626 | */ | |
5627 | if (!filter) | |
5628 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5629 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5630 | |
06d2e8f3 MK |
5631 | /* advertise type-5 routes if needed */ |
5632 | update_advertise_vrf_routes(bgp_vrf); | |
5633 | ||
5ba238b7 MK |
5634 | /* install all remote routes belonging to this l3vni into correspondng |
5635 | * vrf */ | |
5636 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5637 | |
5638 | return 0; | |
5639 | } | |
5640 | ||
996c9314 | 5641 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5642 | { |
5643 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5644 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5645 | struct listnode *node = NULL; |
18abc1eb | 5646 | struct listnode *next = NULL; |
f1f8b53c | 5647 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5648 | |
5649 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5650 | if (!bgp_vrf) { | |
af4c2728 | 5651 | flog_err( |
e50f7cfd | 5652 | EC_BGP_NO_DFLT, |
996c9314 LB |
5653 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5654 | l3vni); | |
fe1dc5a3 MK |
5655 | return -1; |
5656 | } | |
5657 | ||
5e53dce3 T |
5658 | bgp_evpn = bgp_get_evpn(); |
5659 | if (!bgp_evpn) { | |
af4c2728 | 5660 | flog_err( |
e50f7cfd | 5661 | EC_BGP_NO_DFLT, |
3621ebc5 | 5662 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5663 | l3vni); |
f1f8b53c MK |
5664 | return -1; |
5665 | } | |
5666 | ||
d846168d | 5667 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5668 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5669 | * routes. This will uninstalling the routes from zebra and decremnt the |
5670 | * bgp info count. | |
523cafc4 | 5671 | */ |
d846168d | 5672 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5673 | |
06d2e8f3 MK |
5674 | /* delete/withdraw all type-5 routes */ |
5675 | delete_withdraw_vrf_routes(bgp_vrf); | |
5676 | ||
fe1dc5a3 MK |
5677 | /* remove the l3vni from vrf instance */ |
5678 | bgp_vrf->l3vni = 0; | |
5679 | ||
5680 | /* remove the Rmac from the BGP vrf */ | |
5681 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5682 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5683 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5684 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5685 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5686 | |
530e8a6e | 5687 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5688 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5689 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5690 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5691 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5692 | } |
530e8a6e CS |
5693 | |
5694 | /* remove default export RT */ | |
5695 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5696 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5697 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5698 | } |
fe1dc5a3 | 5699 | |
f1f8b53c | 5700 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5701 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5702 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5703 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5704 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5705 | } |
5706 | } | |
fe1dc5a3 | 5707 | |
18abc1eb | 5708 | /* If any L2VNIs point to this instance, unlink them. */ |
5709 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5710 | bgpevpn_unlink_from_l3vni(vpn); | |
5711 | ||
ff9d54fb CS |
5712 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5713 | ||
fe1dc5a3 MK |
5714 | /* Delete the instance if it was autocreated */ |
5715 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5716 | bgp_delete(bgp_vrf); | |
5717 | ||
5718 | return 0; | |
5719 | } | |
5720 | ||
128ea8ab | 5721 | /* |
5722 | * Handle del of a local VNI. | |
5723 | */ | |
d62a17ae | 5724 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5725 | { |
d62a17ae | 5726 | struct bgpevpn *vpn; |
128ea8ab | 5727 | |
d62a17ae | 5728 | /* Locate VNI hash */ |
5729 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5730 | if (!vpn) { | |
1e00627b | 5731 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5732 | flog_warn( |
e50f7cfd | 5733 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5734 | "%u: VNI hash entry for VNI %u not found at DEL", |
5735 | bgp->vrf_id, vni); | |
d62a17ae | 5736 | return 0; |
5737 | } | |
128ea8ab | 5738 | |
d62a17ae | 5739 | /* Remove all local EVPN routes and schedule for processing (to |
5740 | * withdraw from peers). | |
5741 | */ | |
5742 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5743 | |
021b6596 AD |
5744 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
5745 | ||
9daa5d47 | 5746 | vpn->svi_ifindex = 0; |
db0e1937 MK |
5747 | /* |
5748 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5749 | */ | |
5750 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5751 | ||
d62a17ae | 5752 | /* Clear "live" flag and see if hash needs to be freed. */ |
5753 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5754 | if (!is_vni_configured(vpn)) | |
5755 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5756 | |
d62a17ae | 5757 | return 0; |
128ea8ab | 5758 | } |
5759 | ||
5760 | /* | |
d1911c26 | 5761 | * Handle add (or update) of a local VNI. The VNI changes we care |
5762 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5763 | */ |
d62a17ae | 5764 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5765 | struct in_addr originator_ip, |
5766 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5767 | struct in_addr mcast_grp, |
5768 | ifindex_t svi_ifindex) | |
d62a17ae | 5769 | { |
5770 | struct bgpevpn *vpn; | |
5771 | struct prefix_evpn p; | |
5772 | ||
d62a17ae | 5773 | /* Lookup VNI. If present and no change, exit. */ |
5774 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5775 | if (vpn) { |
29c53922 | 5776 | |
d1911c26 | 5777 | if (is_vni_live(vpn) |
5778 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5779 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
5780 | && vpn->tenant_vrf_id == tenant_vrf_id |
5781 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 5782 | /* Probably some other param has changed that we don't |
5783 | * care about. */ | |
5784 | return 0; | |
5785 | ||
76d07c7a AK |
5786 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5787 | ||
021b6596 AD |
5788 | if (vpn->svi_ifindex != svi_ifindex) { |
5789 | ||
5790 | /* | |
5791 | * Unresolve all the gateway IP nexthops for this VNI | |
5792 | * for old SVI | |
5793 | */ | |
dc6cef73 AD |
5794 | bgp_evpn_remote_ip_hash_iterate( |
5795 | vpn, | |
5796 | (void (*)(struct hash_bucket *, void *)) | |
5797 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
5798 | vpn); |
5799 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
5800 | vpn->svi_ifindex = svi_ifindex; | |
5801 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5802 | ||
5803 | /* | |
5804 | * Resolve all the gateway IP nexthops for this VNI | |
5805 | * for new SVI | |
5806 | */ | |
dc6cef73 AD |
5807 | bgp_evpn_remote_ip_hash_iterate( |
5808 | vpn, | |
5809 | (void (*)(struct hash_bucket *, void *)) | |
5810 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
5811 | vpn); |
5812 | } | |
9daa5d47 | 5813 | |
d1911c26 | 5814 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 5815 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
5816 | |
5817 | /* | |
5818 | * Unresolve all the gateway IP nexthops for this VNI | |
5819 | * in old tenant vrf | |
5820 | */ | |
dc6cef73 AD |
5821 | bgp_evpn_remote_ip_hash_iterate( |
5822 | vpn, | |
5823 | (void (*)(struct hash_bucket *, void *)) | |
5824 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 5825 | vpn); |
6a8657d0 | 5826 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 5827 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 5828 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
5829 | |
5830 | /* | |
5831 | * Resolve all the gateway IP nexthops for this VNI | |
5832 | * in new tenant vrf | |
5833 | */ | |
dc6cef73 AD |
5834 | bgp_evpn_remote_ip_hash_iterate( |
5835 | vpn, | |
5836 | (void (*)(struct hash_bucket *, void *)) | |
5837 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 5838 | vpn); |
6a8657d0 | 5839 | } |
29c53922 | 5840 | |
d1911c26 | 5841 | /* If tunnel endpoint IP has changed, update (and delete prior |
5842 | * type-3 route, if needed.) | |
5843 | */ | |
5844 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5845 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5846 | |
d1911c26 | 5847 | /* Update all routes with new endpoint IP and/or export RT |
5848 | * for VRFs | |
5849 | */ | |
5850 | if (is_vni_live(vpn)) | |
5851 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5852 | } |
5853 | ||
5854 | /* Create or update as appropriate. */ | |
5855 | if (!vpn) { | |
76d07c7a | 5856 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
9daa5d47 | 5857 | mcast_grp, svi_ifindex); |
d62a17ae | 5858 | if (!vpn) { |
af4c2728 | 5859 | flog_err( |
e50f7cfd | 5860 | EC_BGP_VNI, |
d62a17ae | 5861 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5862 | bgp->vrf_id, vni); | |
5863 | return -1; | |
5864 | } | |
5865 | } | |
5866 | ||
db0e1937 | 5867 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5868 | if (is_vni_live(vpn)) |
5869 | return 0; | |
5870 | ||
d62a17ae | 5871 | /* Mark as "live" */ |
5872 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5873 | ||
db0e1937 MK |
5874 | /* tunnel is now active, add tunnel-ip to db */ |
5875 | bgp_tip_add(bgp, &originator_ip); | |
5876 | ||
5877 | /* filter routes as nexthop database has changed */ | |
5878 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5879 | ||
fd069644 DS |
5880 | /* |
5881 | * Create EVPN type-3 route and schedule for processing. | |
5882 | * | |
5883 | * RT-3 only if doing head-end replication | |
5884 | */ | |
833b8a50 AK |
5885 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5886 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5887 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5888 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5889 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5890 | "%u: Type3 route creation failure for VNI %u", | |
5891 | bgp->vrf_id, vni); | |
5892 | return -1; | |
5893 | } | |
d62a17ae | 5894 | } |
5895 | ||
5896 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5897 | * VNI, | |
5898 | * install them. | |
5899 | */ | |
5900 | install_routes_for_vni(bgp, vpn); | |
5901 | ||
d7d97010 MK |
5902 | /* If we are advertising gateway mac-ip |
5903 | It needs to be conveyed again to zebra */ | |
5904 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5905 | ||
df070e6f CS |
5906 | /* advertise svi mac-ip knob to zebra */ |
5907 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5908 | ||
d62a17ae | 5909 | return 0; |
b18825eb | 5910 | } |
14c1a7bf | 5911 | |
fd069644 DS |
5912 | /* |
5913 | * Handle change in setting for BUM handling. The supported values | |
5914 | * are head-end replication and dropping all BUM packets. Any change | |
5915 | * should be registered with zebra. Also, if doing head-end replication, | |
5916 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5917 | * to be dropped, the RT-3s must be withdrawn. | |
5918 | */ | |
5919 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5920 | { | |
5921 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5922 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5923 | "Flooding" : "Flooding Disabled"); | |
5924 | ||
5925 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5926 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5927 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5928 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5929 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5930 | } | |
5931 | ||
7724c0a1 | 5932 | /* |
5933 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5934 | * EVPN routes from peers. | |
5935 | */ | |
d62a17ae | 5936 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5937 | { |
e3b78da8 | 5938 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5939 | void *))cleanup_vni_on_disable, |
5940 | bgp); | |
7724c0a1 | 5941 | } |
5942 | ||
14c1a7bf | 5943 | /* |
5944 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5945 | * BGP instance (default) is being freed. | |
5946 | */ | |
d62a17ae | 5947 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5948 | { |
1525e99f | 5949 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5950 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5951 | bgp); |
5952 | ||
5953 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5954 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5955 | |
5956 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5957 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 5958 | |
021b6596 AD |
5959 | hash_free(bgp->vni_svi_hash); |
5960 | bgp->vni_svi_hash = NULL; | |
1525e99f | 5961 | hash_free(bgp->vnihash); |
d62a17ae | 5962 | bgp->vnihash = NULL; |
1525e99f | 5963 | |
6a154c88 DL |
5964 | list_delete(&bgp->vrf_import_rtl); |
5965 | list_delete(&bgp->vrf_export_rtl); | |
5966 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5967 | } |
5968 | ||
5969 | /* | |
5970 | * Initialization for EVPN | |
5971 | * Create | |
5972 | * VNI hash table | |
5973 | * hash for RT to VNI | |
14c1a7bf | 5974 | */ |
d62a17ae | 5975 | void bgp_evpn_init(struct bgp *bgp) |
5976 | { | |
5977 | bgp->vnihash = | |
5978 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
5979 | bgp->vni_svi_hash = |
5980 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
5981 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 5982 | bgp->import_rt_hash = |
5983 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5984 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5985 | bgp->vrf_import_rt_hash = |
5986 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5987 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5988 | bgp->vrf_import_rtl = list_new(); |
5989 | bgp->vrf_import_rtl->cmp = | |
5990 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5991 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5992 | bgp->vrf_export_rtl = list_new(); |
5993 | bgp->vrf_export_rtl->cmp = | |
5994 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5995 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5996 | bgp->l2vnis = list_new(); |
64465785 | 5997 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5998 | /* By default Duplicate Address Dection is enabled. |
5999 | * Max-moves (N) 5, detection time (M) 180 | |
6000 | * default action is warning-only | |
6001 | * freeze action permanently freezes address, | |
6002 | * and freeze time (auto-recovery) is disabled. | |
6003 | */ | |
6004 | if (bgp->evpn_info) { | |
6005 | bgp->evpn_info->dup_addr_detect = true; | |
6006 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6007 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6008 | bgp->evpn_info->dad_freeze = false; | |
6009 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6010 | /* Initialize zebra vxlan */ |
6011 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6012 | /* Enable PIP feature by default for bgp vrf instance */ |
6013 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6014 | struct bgp *bgp_default; | |
6015 | ||
6016 | bgp->evpn_info->advertise_pip = true; | |
6017 | bgp_default = bgp_get_default(); | |
6018 | if (bgp_default) | |
6019 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6020 | } | |
85c8d83b | 6021 | } |
fd069644 DS |
6022 | |
6023 | /* Default BUM handling is to do head-end replication. */ | |
6024 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6025 | |
6026 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6027 | } |
10ebe1ab MK |
6028 | |
6029 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6030 | { | |
6031 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6032 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6033 | } |
44c69747 LK |
6034 | |
6035 | /* | |
6036 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6037 | */ | |
5f040085 | 6038 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6039 | { |
6040 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6041 | ||
6042 | if (!pfx || pfx->family != AF_EVPN) | |
6043 | return 0; | |
6044 | ||
6045 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6046 | return 0; | |
6047 | ||
6048 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6049 | } | |
7c312383 AD |
6050 | |
6051 | /* | |
6052 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6053 | */ | |
5a1ae2c2 | 6054 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6055 | { |
6056 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6057 | ||
6058 | /* | |
e11329ca | 6059 | * EVPN routes should be marked as valid only if the nexthop is |
6060 | * reachable. Only if this happens, the route should be imported | |
6061 | * (into VNI or VRF routing tables) and/or advertised. | |
6062 | * Note: This is currently applied for EVPN type-2, type-3 and | |
6063 | * type-5 routes. It may be tweaked later on for other routes, or | |
6064 | * even removed completely when all routes are handled. | |
7c312383 AD |
6065 | */ |
6066 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 6067 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
6068 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
6069 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6070 | return true; |
6071 | ||
6072 | return false; | |
6073 | } | |
021b6596 AD |
6074 | |
6075 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6076 | { | |
6077 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6078 | struct evpn_remote_ip *ip; | |
6079 | ||
6080 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6081 | *ip = *key; | |
6082 | ip->macip_path_list = list_new(); | |
6083 | ||
6084 | return ip; | |
6085 | } | |
6086 | ||
6087 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6088 | { | |
6089 | const struct evpn_remote_ip *ip = p; | |
6090 | const struct ipaddr *addr = &ip->addr; | |
6091 | ||
6092 | if (IS_IPADDR_V4(addr)) | |
6093 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6094 | ||
6095 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6096 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6097 | } | |
6098 | ||
6099 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6100 | { | |
6101 | const struct evpn_remote_ip *ip1 = p1; | |
6102 | const struct evpn_remote_ip *ip2 = p2; | |
6103 | ||
6104 | return (memcmp(&ip1->addr, &ip2->addr, sizeof(struct ipaddr)) == 0); | |
6105 | } | |
6106 | ||
6107 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6108 | { | |
dc6cef73 AD |
6109 | if (!evpn_resolve_overlay_index()) |
6110 | return; | |
6111 | ||
021b6596 AD |
6112 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6113 | bgp_evpn_remote_ip_hash_cmp, | |
6114 | "BGP EVPN remote IP hash"); | |
6115 | } | |
6116 | ||
6117 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6118 | { | |
6119 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6120 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6121 | ||
6122 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6123 | ||
6124 | list_delete(&ip->macip_path_list); | |
6125 | ||
6126 | hash_release(vpn->remote_ip_hash, ip); | |
6127 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6128 | } | |
6129 | ||
6130 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6131 | { | |
dc6cef73 | 6132 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6133 | return; |
6134 | ||
6135 | hash_iterate(vpn->remote_ip_hash, | |
6136 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6137 | vpn); | |
6138 | ||
6139 | hash_free(vpn->remote_ip_hash); | |
6140 | vpn->remote_ip_hash = NULL; | |
6141 | } | |
6142 | ||
6143 | /* Add a remote MAC/IP route to hash table */ | |
6144 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6145 | struct bgp_path_info *pi) | |
6146 | { | |
6147 | struct evpn_remote_ip tmp; | |
6148 | struct evpn_remote_ip *ip; | |
6149 | struct prefix_evpn *evp; | |
6150 | ||
dc6cef73 AD |
6151 | if (!evpn_resolve_overlay_index()) |
6152 | return; | |
6153 | ||
6154 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6155 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6156 | return; | |
6157 | ||
021b6596 AD |
6158 | evp = (struct prefix_evpn *)&pi->net->p; |
6159 | ||
6160 | if (evp->family != AF_EVPN | |
6161 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6162 | || is_evpn_prefix_ipaddr_none(evp)) | |
6163 | return; | |
6164 | ||
6165 | tmp.addr = evp->prefix.macip_addr.ip; | |
6166 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6167 | if (ip) { | |
6168 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6169 | return; | |
6170 | (void)listnode_add(ip->macip_path_list, pi); | |
6171 | return; | |
6172 | } | |
6173 | ||
6174 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
6175 | if (!ip) | |
6176 | return; | |
6177 | ||
6178 | (void)listnode_add(ip->macip_path_list, pi); | |
6179 | ||
6180 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6181 | } | |
6182 | ||
6183 | /* Delete a remote MAC/IP route from hash table */ | |
6184 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6185 | struct bgp_path_info *pi) | |
6186 | { | |
6187 | struct evpn_remote_ip tmp; | |
6188 | struct evpn_remote_ip *ip; | |
6189 | struct prefix_evpn *evp; | |
6190 | ||
dc6cef73 AD |
6191 | if (!evpn_resolve_overlay_index()) |
6192 | return; | |
6193 | ||
021b6596 AD |
6194 | evp = (struct prefix_evpn *)&pi->net->p; |
6195 | ||
6196 | if (evp->family != AF_EVPN | |
6197 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6198 | || is_evpn_prefix_ipaddr_none(evp)) | |
6199 | return; | |
6200 | ||
6201 | tmp.addr = evp->prefix.macip_addr.ip; | |
6202 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6203 | if (ip == NULL) | |
6204 | return; | |
6205 | ||
6206 | listnode_delete(ip->macip_path_list, pi); | |
6207 | ||
6208 | if (ip->macip_path_list->count == 0) { | |
6209 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6210 | hash_release(vpn->remote_ip_hash, ip); | |
6211 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6212 | } | |
6213 | } | |
6214 | ||
dc6cef73 AD |
6215 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6216 | void (*func)(struct hash_bucket *, | |
6217 | void *), | |
6218 | void *arg) | |
6219 | { | |
6220 | if (!evpn_resolve_overlay_index()) | |
6221 | return; | |
6222 | ||
6223 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6224 | } | |
6225 | ||
021b6596 AD |
6226 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6227 | { | |
6228 | char buf[INET6_ADDRSTRLEN]; | |
6229 | char buf2[EVPN_ROUTE_STRLEN]; | |
6230 | struct prefix_evpn *evp; | |
6231 | ||
6232 | struct listnode *node = NULL; | |
6233 | struct bgp_path_info *pi = NULL; | |
6234 | struct vty *vty = (struct vty *)args; | |
6235 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6236 | ||
6237 | vty_out(vty, " Remote IP: %s\n", | |
6238 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6239 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
6240 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) { | |
6241 | evp = (struct prefix_evpn *)&pi->net->p; | |
6242 | prefix2str(evp, buf2, sizeof(buf2)); | |
6243 | vty_out(vty, " %s\n", buf2); | |
6244 | } | |
6245 | } | |
6246 | ||
6247 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6248 | { | |
6249 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6250 | struct vty *vty = (struct vty *)args; | |
6251 | ||
6252 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6253 | bgp_evpn_remote_ip_hash_iterate( |
6254 | vpn, | |
021b6596 AD |
6255 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6256 | vty); | |
6257 | vty_out(vty, "\n"); | |
6258 | } | |
6259 | ||
6260 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6261 | void *args) | |
6262 | { | |
6263 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6264 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6265 | ||
6266 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6267 | } | |
6268 | ||
6269 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6270 | void *args) | |
6271 | { | |
6272 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6273 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6274 | ||
6275 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6276 | } | |
6277 | ||
6278 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6279 | { | |
6280 | const struct bgpevpn *vpn = p; | |
6281 | ||
6282 | return jhash_1word(vpn->svi_ifindex, 0); | |
6283 | } | |
6284 | ||
6285 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6286 | { | |
6287 | const struct bgpevpn *vpn1 = p1; | |
6288 | const struct bgpevpn *vpn2 = p2; | |
6289 | ||
6290 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6291 | } | |
6292 | ||
6293 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
6294 | ifindex_t svi) | |
6295 | { | |
6296 | struct bgpevpn *vpn; | |
6297 | struct bgpevpn tmp; | |
6298 | ||
6299 | memset(&tmp, 0, sizeof(struct bgpevpn)); | |
6300 | tmp.svi_ifindex = svi; | |
6301 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
6302 | return vpn; | |
6303 | } | |
6304 | ||
6305 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
6306 | { | |
6307 | if (vpn->svi_ifindex == 0) | |
6308 | return; | |
6309 | ||
6310 | hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); | |
6311 | } | |
6312 | ||
6313 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
6314 | struct bgpevpn *vpn) | |
6315 | { | |
6316 | if (vpn->svi_ifindex == 0) | |
6317 | return; | |
6318 | ||
6319 | hash_release(bgp->vni_svi_hash, vpn); | |
6320 | } | |
6321 | ||
6322 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
6323 | { | |
6324 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
6325 | struct vty *vty = (struct vty *)args; | |
6326 | ||
6327 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
6328 | } | |
6329 | ||
6330 | /* | |
6331 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
6332 | * gateway IP overlay index. | |
6333 | * This function returns true if there is a remote MAC/IP route for the gateway | |
6334 | * IP in the EVI of the nexthop SVI. | |
6335 | */ | |
6336 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
6337 | { | |
6338 | struct bgp *bgp_evpn = NULL; | |
6339 | struct bgpevpn *vpn = NULL; | |
6340 | struct evpn_remote_ip tmp; | |
6341 | struct prefix *p; | |
6342 | ||
dc6cef73 AD |
6343 | if (!evpn_resolve_overlay_index()) |
6344 | return false; | |
6345 | ||
021b6596 AD |
6346 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
6347 | return false; | |
6348 | ||
6349 | bgp_evpn = bgp_get_evpn(); | |
6350 | if (!bgp_evpn) | |
6351 | return false; | |
6352 | ||
6353 | /* | |
6354 | * Gateway IP is resolved by nht over SVI interface. | |
6355 | * Use this SVI to find corresponding EVI(L2 context) | |
6356 | */ | |
6357 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
6358 | if (!vpn) | |
6359 | return false; | |
6360 | ||
6361 | if (vpn->bgp_vrf != bnc->bgp) | |
6362 | return false; | |
6363 | ||
6364 | /* | |
6365 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
6366 | * which stores all the remote IP addresses received via MAC/IP routes | |
6367 | * in this EVI | |
6368 | */ | |
6369 | memset(&tmp, 0, sizeof(struct evpn_remote_ip)); | |
6370 | ||
6371 | p = &bnc->prefix; | |
6372 | if (p->family == AF_INET) { | |
6373 | tmp.addr.ipa_type = IPADDR_V4; | |
6374 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
6375 | sizeof(struct in_addr)); | |
6376 | } else if (p->family == AF_INET6) { | |
6377 | tmp.addr.ipa_type = IPADDR_V6; | |
6378 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
6379 | sizeof(struct in6_addr)); | |
6380 | } else | |
6381 | return false; | |
6382 | ||
6383 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
6384 | return false; | |
6385 | ||
6386 | return true; | |
6387 | } | |
6388 | ||
6389 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
6390 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
6391 | struct ipaddr *addr, | |
6392 | bool resolve) | |
6393 | { | |
6394 | afi_t afi; | |
6395 | struct prefix p; | |
6396 | struct bgp_nexthop_cache *bnc; | |
6397 | struct bgp_nexthop_cache_head *tree = NULL; | |
6398 | ||
6399 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
6400 | return; | |
6401 | ||
6402 | memset(&p, 0, sizeof(struct prefix)); | |
6403 | ||
6404 | if (addr->ipa_type == IPADDR_V4) { | |
6405 | afi = AFI_IP; | |
6406 | p.family = AF_INET; | |
6407 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
6408 | sizeof(struct in_addr)); | |
6409 | p.prefixlen = IPV4_MAX_BITLEN; | |
6410 | } else if (addr->ipa_type == IPADDR_V6) { | |
6411 | afi = AFI_IP6; | |
6412 | p.family = AF_INET6; | |
6413 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
6414 | sizeof(struct in6_addr)); | |
6415 | p.prefixlen = IPV6_MAX_BITLEN; | |
6416 | } else | |
6417 | return; | |
6418 | ||
6419 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
6420 | bnc = bnc_find(tree, &p, 0); | |
6421 | ||
6422 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
6423 | return; | |
6424 | ||
6425 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
6426 | return; | |
6427 | ||
6428 | if (BGP_DEBUG(nht, NHT)) { | |
6429 | char buf[PREFIX2STR_BUFFER]; | |
6430 | ||
6431 | prefix2str(&bnc->prefix, buf, sizeof(buf)); | |
6432 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %s", | |
6433 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, | |
6434 | vpn->vni, (resolve ? "add" : "delete"), buf); | |
6435 | } | |
6436 | ||
6437 | /* | |
6438 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
6439 | * Set nexthop as valid only if it is already L3 reachable | |
6440 | */ | |
6441 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
6442 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6443 | bnc->flags |= BGP_NEXTHOP_VALID; | |
6444 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6445 | evaluate_paths(bnc); | |
6446 | } | |
6447 | ||
6448 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
6449 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
6450 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
6451 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6452 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6453 | evaluate_paths(bnc); | |
6454 | } | |
6455 | } | |
6456 | ||
dc6cef73 AD |
6457 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
6458 | void *arg) | |
6459 | { | |
6460 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6461 | struct bgp_dest *dest; | |
6462 | struct bgp_path_info *pi; | |
6463 | ||
6464 | bgp_evpn_remote_ip_hash_init(vpn); | |
6465 | ||
6466 | for (dest = bgp_table_top(vpn->route_table); dest; | |
6467 | dest = bgp_route_next(dest)) | |
6468 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6469 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
6470 | } | |
6471 | ||
6472 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
6473 | void *arg) | |
6474 | { | |
6475 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6476 | ||
6477 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
6478 | } |