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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 | 33 | |
23d0a753 DA |
34 | #include "lib/printfrr.h" |
35 | ||
7ef5a232 PG |
36 | #include "bgpd/bgp_attr_evpn.h" |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 42 | #include "bgpd/bgp_label.h" |
7ef5a232 | 43 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 44 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 45 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 46 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 47 | #include "bgpd/bgp_encap_types.h" |
48 | #include "bgpd/bgp_debug.h" | |
14454c9f | 49 | #include "bgpd/bgp_errors.h" |
128ea8ab | 50 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 51 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 52 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 53 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 54 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 55 | #include "bgpd/bgp_vty.h" |
a2299aba | 56 | #include "bgpd/bgp_nht.h" |
23aa35ad | 57 | #include "bgpd/bgp_trace.h" |
128ea8ab | 58 | |
59 | /* | |
60 | * Definitions and external declarations. | |
61 | */ | |
96244aca DL |
62 | DEFINE_QOBJ_TYPE(bgpevpn); |
63 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 64 | |
65 | ||
66 | /* | |
67 | * Static function declarations | |
68 | */ | |
d62a17ae | 69 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
021b6596 AD |
70 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *evpn); |
71 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *evpn); | |
72 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
73 | struct bgp_path_info *pi); | |
74 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
75 | struct bgp_path_info *pi); | |
dc6cef73 AD |
76 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
77 | void (*func)(struct hash_bucket *, | |
78 | void *), | |
79 | void *arg); | |
021b6596 AD |
80 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn); |
81 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
82 | struct bgpevpn *vpn); | |
83 | static unsigned int vni_svi_hash_key_make(const void *p); | |
84 | static bool vni_svi_hash_cmp(const void *p1, const void *p2); | |
85 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
86 | struct ipaddr *addr, | |
87 | bool resolve); | |
88 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
89 | void *args); | |
90 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
91 | void *args); | |
9c7edc03 | 92 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 93 | |
94 | /* | |
95 | * Private functions. | |
96 | */ | |
97 | ||
98 | /* | |
99 | * Make vni hash key. | |
100 | */ | |
d8b87afe | 101 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 102 | { |
d8b87afe | 103 | const struct bgpevpn *vpn = p; |
d62a17ae | 104 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 105 | } |
106 | ||
107 | /* | |
108 | * Comparison function for vni hash | |
109 | */ | |
74df8d6d | 110 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 111 | { |
d62a17ae | 112 | const struct bgpevpn *vpn1 = p1; |
113 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 114 | |
ce40c627 | 115 | return vpn1->vni == vpn2->vni; |
14c1a7bf | 116 | } |
117 | ||
c44ab6f1 | 118 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
119 | { |
120 | const struct bgpevpn *vpn1 = p1; | |
121 | const struct bgpevpn *vpn2 = p2; | |
122 | ||
123 | return vpn1->vni - vpn2->vni; | |
124 | } | |
125 | ||
10ebe1ab MK |
126 | /* |
127 | * Make vrf import route target hash key. | |
128 | */ | |
d8b87afe | 129 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 130 | { |
d8b87afe QY |
131 | const struct vrf_irt_node *irt = p; |
132 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
133 | |
134 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
135 | } |
136 | ||
137 | /* | |
138 | * Comparison function for vrf import rt hash | |
139 | */ | |
74df8d6d | 140 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
141 | { |
142 | const struct vrf_irt_node *irt1 = p1; | |
143 | const struct vrf_irt_node *irt2 = p2; | |
144 | ||
10ebe1ab MK |
145 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
146 | } | |
147 | ||
148 | /* | |
f9b8094e | 149 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
150 | */ |
151 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
152 | { | |
5e53dce3 | 153 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
154 | struct vrf_irt_node *irt; |
155 | ||
5e53dce3 T |
156 | bgp_evpn = bgp_get_evpn(); |
157 | if (!bgp_evpn) { | |
e50f7cfd | 158 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 159 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
160 | return NULL; |
161 | } | |
162 | ||
163 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
164 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
165 | |
166 | irt->rt = *rt; | |
167 | irt->vrfs = list_new(); | |
168 | ||
169 | /* Add to hash */ | |
ac390ef8 | 170 | (void)hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern); |
10ebe1ab MK |
171 | |
172 | return irt; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Free the vrf import rt node | |
177 | */ | |
178 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
179 | { | |
5e53dce3 | 180 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 181 | |
5e53dce3 T |
182 | bgp_evpn = bgp_get_evpn(); |
183 | if (!bgp_evpn) { | |
e50f7cfd | 184 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 185 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
186 | return; |
187 | } | |
188 | ||
5e53dce3 | 189 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 190 | list_delete(&irt->vrfs); |
10ebe1ab MK |
191 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
192 | } | |
193 | ||
194 | /* | |
195 | * Function to lookup Import RT node - used to map a RT to set of | |
196 | * VNIs importing routes with that RT. | |
197 | */ | |
198 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
199 | { | |
5e53dce3 | 200 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
201 | struct vrf_irt_node *irt; |
202 | struct vrf_irt_node tmp; | |
203 | ||
5e53dce3 T |
204 | bgp_evpn = bgp_get_evpn(); |
205 | if (!bgp_evpn) { | |
f9b8094e T |
206 | flog_err( |
207 | EC_BGP_NO_DFLT, | |
208 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
209 | return NULL; |
210 | } | |
211 | ||
212 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
213 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 214 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
215 | return irt; |
216 | } | |
217 | ||
218 | /* | |
219 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
220 | */ | |
996c9314 | 221 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
222 | { |
223 | struct listnode *node = NULL, *nnode = NULL; | |
224 | struct bgp *tmp_bgp_vrf = NULL; | |
225 | ||
226 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
227 | if (tmp_bgp_vrf == bgp_vrf) | |
228 | return 1; | |
229 | } | |
230 | return 0; | |
231 | } | |
232 | ||
14c1a7bf | 233 | /* |
234 | * Make import route target hash key. | |
235 | */ | |
d8b87afe | 236 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 237 | { |
d8b87afe QY |
238 | const struct irt_node *irt = p; |
239 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
240 | |
241 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 242 | } |
243 | ||
244 | /* | |
245 | * Comparison function for import rt hash | |
246 | */ | |
74df8d6d | 247 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 248 | { |
d62a17ae | 249 | const struct irt_node *irt1 = p1; |
250 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 251 | |
d62a17ae | 252 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 253 | } |
254 | ||
7724c0a1 | 255 | /* |
128ea8ab | 256 | * Create a new import_rt |
257 | */ | |
d62a17ae | 258 | static struct irt_node *import_rt_new(struct bgp *bgp, |
259 | struct ecommunity_val *rt) | |
128ea8ab | 260 | { |
d62a17ae | 261 | struct irt_node *irt; |
128ea8ab | 262 | |
d62a17ae | 263 | if (!bgp) |
264 | return NULL; | |
128ea8ab | 265 | |
d62a17ae | 266 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 267 | |
d62a17ae | 268 | irt->rt = *rt; |
269 | irt->vnis = list_new(); | |
128ea8ab | 270 | |
d62a17ae | 271 | /* Add to hash */ |
ac390ef8 | 272 | (void)hash_get(bgp->import_rt_hash, irt, hash_alloc_intern); |
128ea8ab | 273 | |
d62a17ae | 274 | return irt; |
128ea8ab | 275 | } |
276 | ||
277 | /* | |
278 | * Free the import rt node | |
7724c0a1 | 279 | */ |
d62a17ae | 280 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 281 | { |
d62a17ae | 282 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 283 | list_delete(&irt->vnis); |
d62a17ae | 284 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 285 | } |
286 | ||
14c1a7bf | 287 | /* |
128ea8ab | 288 | * Function to lookup Import RT node - used to map a RT to set of |
289 | * VNIs importing routes with that RT. | |
290 | */ | |
d62a17ae | 291 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
292 | struct ecommunity_val *rt) | |
128ea8ab | 293 | { |
d62a17ae | 294 | struct irt_node *irt; |
295 | struct irt_node tmp; | |
128ea8ab | 296 | |
d62a17ae | 297 | memset(&tmp, 0, sizeof(struct irt_node)); |
298 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
299 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
300 | return irt; | |
128ea8ab | 301 | } |
302 | ||
303 | /* | |
304 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
305 | */ | |
d62a17ae | 306 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 307 | { |
d62a17ae | 308 | struct listnode *node, *nnode; |
309 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 310 | |
d62a17ae | 311 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
312 | if (tmp_vpn == vpn) | |
313 | return 1; | |
314 | } | |
128ea8ab | 315 | |
d62a17ae | 316 | return 0; |
128ea8ab | 317 | } |
318 | ||
319 | /* | |
320 | * Compare Route Targets. | |
321 | */ | |
f4a5218d AK |
322 | int bgp_evpn_route_target_cmp(struct ecommunity *ecom1, |
323 | struct ecommunity *ecom2) | |
128ea8ab | 324 | { |
d62a17ae | 325 | if (ecom1 && !ecom2) |
326 | return -1; | |
128ea8ab | 327 | |
d62a17ae | 328 | if (!ecom1 && ecom2) |
329 | return 1; | |
128ea8ab | 330 | |
d62a17ae | 331 | if (!ecom1 && !ecom2) |
332 | return 0; | |
128ea8ab | 333 | |
d62a17ae | 334 | if (ecom1->str && !ecom2->str) |
335 | return -1; | |
128ea8ab | 336 | |
d62a17ae | 337 | if (!ecom1->str && ecom2->str) |
338 | return 1; | |
128ea8ab | 339 | |
d62a17ae | 340 | if (!ecom1->str && !ecom2->str) |
341 | return 0; | |
128ea8ab | 342 | |
d62a17ae | 343 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 344 | } |
345 | ||
f4a5218d | 346 | void bgp_evpn_xxport_delete_ecomm(void *val) |
987d8198 DS |
347 | { |
348 | struct ecommunity *ecomm = val; | |
349 | ecommunity_free(&ecomm); | |
350 | } | |
351 | ||
128ea8ab | 352 | /* |
353 | * Mask off global-admin field of specified extended community (RT), | |
354 | * just retain the local-admin field. | |
355 | */ | |
d62a17ae | 356 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
357 | struct ecommunity_val *src) | |
128ea8ab | 358 | { |
d7c0a89a | 359 | uint8_t type; |
128ea8ab | 360 | |
d62a17ae | 361 | type = src->val[0]; |
362 | dst->val[0] = 0; | |
363 | if (type == ECOMMUNITY_ENCODE_AS) { | |
364 | dst->val[2] = dst->val[3] = 0; | |
365 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
366 | || type == ECOMMUNITY_ENCODE_IP) { | |
367 | dst->val[2] = dst->val[3] = 0; | |
368 | dst->val[4] = dst->val[5] = 0; | |
369 | } | |
128ea8ab | 370 | } |
371 | ||
10ebe1ab MK |
372 | /* |
373 | * Map one RT to specified VRF. | |
374 | * bgp_vrf = BGP vrf instance | |
375 | */ | |
996c9314 | 376 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
377 | { |
378 | struct vrf_irt_node *irt = NULL; | |
379 | struct ecommunity_val eval_tmp; | |
380 | ||
381 | /* If using "automatic" RT, | |
382 | * we only care about the local-admin sub-field. | |
383 | * This is to facilitate using L3VNI(VRF-VNI) | |
384 | * as the RT for EBGP peering too. | |
385 | */ | |
386 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 387 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
388 | mask_ecom_global_admin(&eval_tmp, eval); |
389 | ||
390 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
391 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
392 | /* Already mapped. */ | |
393 | return; | |
10ebe1ab | 394 | |
e066d6d0 | 395 | if (!irt) |
10ebe1ab | 396 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
397 | |
398 | /* Add VRF to the list for this RT. */ | |
399 | listnode_add(irt->vrfs, bgp_vrf); | |
400 | } | |
401 | ||
402 | /* | |
403 | * Unmap specified VRF from specified RT. If there are no other | |
404 | * VRFs for this RT, then the RT hash is deleted. | |
405 | * bgp_vrf: BGP VRF specific instance | |
406 | */ | |
996c9314 | 407 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
408 | { |
409 | /* Delete VRF from list for this RT. */ | |
410 | listnode_delete(irt->vrfs, bgp_vrf); | |
411 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
412 | vrf_import_rt_free(irt); |
413 | } | |
414 | } | |
415 | ||
128ea8ab | 416 | /* |
417 | * Map one RT to specified VNI. | |
14c1a7bf | 418 | */ |
d62a17ae | 419 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
420 | struct ecommunity_val *eval) | |
128ea8ab | 421 | { |
d62a17ae | 422 | struct irt_node *irt; |
423 | struct ecommunity_val eval_tmp; | |
128ea8ab | 424 | |
d62a17ae | 425 | /* If using "automatic" RT, we only care about the local-admin |
426 | * sub-field. | |
427 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
428 | */ | |
429 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
430 | if (!is_import_rt_configured(vpn)) | |
431 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 432 | |
d62a17ae | 433 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 434 | if (irt) |
d62a17ae | 435 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
436 | /* Already mapped. */ | |
437 | return; | |
128ea8ab | 438 | |
d62a17ae | 439 | if (!irt) { |
440 | irt = import_rt_new(bgp, &eval_tmp); | |
441 | assert(irt); | |
442 | } | |
128ea8ab | 443 | |
d62a17ae | 444 | /* Add VNI to the hash list for this RT. */ |
445 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 446 | } |
447 | ||
448 | /* | |
449 | * Unmap specified VNI from specified RT. If there are no other | |
450 | * VNIs for this RT, then the RT hash is deleted. | |
451 | */ | |
d62a17ae | 452 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
453 | struct irt_node *irt) | |
14c1a7bf | 454 | { |
d62a17ae | 455 | /* Delete VNI from hash list for this RT. */ |
456 | listnode_delete(irt->vnis, vpn); | |
457 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 458 | import_rt_free(bgp, irt); |
459 | } | |
14c1a7bf | 460 | } |
461 | ||
0ca10580 | 462 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 463 | const struct prefix_evpn *p, |
0ca10580 CS |
464 | struct attr *attr, uint8_t flags) |
465 | { | |
466 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
467 | ||
468 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
469 | if (!bgp_vrf) | |
470 | return; | |
471 | ||
b96cafa3 CS |
472 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
473 | return; | |
474 | ||
475 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
476 | * in case of route is self MAC-IP, | |
477 | * advertise-pip and advertise-svi-ip features | |
478 | * are enabled. | |
479 | * Otherwise, for all host MAC-IP route's | |
27727001 | 480 | * copy anycast RMAC. |
b96cafa3 CS |
481 | */ |
482 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
483 | && bgp_vrf->evpn_info->advertise_pip && | |
484 | bgp_vrf->evpn_info->is_anycast_mac) { | |
485 | /* copy sys rmac */ | |
486 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
487 | ETH_ALEN); | |
488 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
489 | attr->mp_nexthop_global_in = | |
490 | bgp_vrf->evpn_info->pip_ip; | |
491 | } else | |
492 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 493 | } |
b96cafa3 | 494 | |
128ea8ab | 495 | /* |
496 | * Create RT extended community automatically from passed information: | |
497 | * of the form AS:VNI. | |
498 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
499 | * the need is to get a RT value that will be unique across different | |
500 | * VNIs but the same across routers (in the same AS) for a particular | |
501 | * VNI. | |
502 | */ | |
c581d8b0 | 503 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 504 | { |
d62a17ae | 505 | struct ecommunity_val eval; |
b90d4580 CS |
506 | struct ecommunity *ecomadd, *ecom; |
507 | bool ecom_found = false; | |
508 | struct listnode *node; | |
128ea8ab | 509 | |
bf1061d8 VB |
510 | if (bgp->advertise_autort_rfc8365) |
511 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 512 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 513 | |
d62a17ae | 514 | ecomadd = ecommunity_new(); |
1207a5bc | 515 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 | 516 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
d74a6cc1 | 517 | if (ecommunity_cmp(ecomadd, ecom)) { |
b90d4580 | 518 | ecom_found = true; |
d74a6cc1 | 519 | break; |
520 | } | |
b90d4580 CS |
521 | |
522 | if (!ecom_found) | |
523 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
524 | else |
525 | ecommunity_free(&ecomadd); | |
128ea8ab | 526 | } |
14c1a7bf | 527 | |
528 | /* | |
128ea8ab | 529 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
530 | * creation of a VNI. | |
531 | */ | |
d62a17ae | 532 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 533 | { |
d62a17ae | 534 | bgp_evpn_derive_auto_rd(bgp, vpn); |
535 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
536 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 537 | } |
538 | ||
1ec31309 | 539 | /* |
540 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
541 | */ | |
542 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
543 | { | |
544 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
545 | return; | |
546 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
547 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
548 | } | |
549 | ||
09319b4e DS |
550 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
551 | safi_t safi, | |
552 | const struct prefix_evpn *evp, | |
553 | struct prefix_rd *prd) | |
c44ab6f1 AK |
554 | { |
555 | struct prefix_evpn global_p; | |
556 | ||
557 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
558 | /* prefix in the global table doesn't include the VTEP-IP so | |
559 | * we need to create a different copy of the prefix | |
560 | */ | |
561 | evpn_type1_prefix_global_copy(&global_p, evp); | |
562 | evp = &global_p; | |
563 | } | |
564 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
565 | } | |
566 | ||
09319b4e DS |
567 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
568 | safi_t safi, | |
569 | const struct prefix_evpn *evp, | |
570 | struct prefix_rd *prd) | |
c44ab6f1 AK |
571 | { |
572 | struct prefix_evpn global_p; | |
573 | ||
574 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
575 | /* prefix in the global table doesn't include the VTEP-IP so | |
576 | * we need to create a different copy of the prefix | |
577 | */ | |
578 | evpn_type1_prefix_global_copy(&global_p, evp); | |
579 | evp = &global_p; | |
580 | } | |
581 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
582 | } | |
583 | ||
128ea8ab | 584 | /* |
585 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 586 | */ |
d62a17ae | 587 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 588 | const struct prefix_evpn *p, |
d62a17ae | 589 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 590 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 591 | { |
592 | struct stream *s; | |
0ffd0fb5 | 593 | uint16_t ipa_len; |
c44ab6f1 | 594 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 595 | |
596 | /* Check socket. */ | |
597 | if (!zclient || zclient->sock < 0) | |
598 | return 0; | |
599 | ||
600 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
601 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
602 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
603 | zlog_debug( |
604 | "%s: No zebra instance to talk to, not installing remote macip", | |
605 | __func__); | |
d62a17ae | 606 | return 0; |
bb4ef1ae | 607 | } |
c44ab6f1 AK |
608 | |
609 | if (!esi) | |
610 | esi = zero_esi; | |
d62a17ae | 611 | s = zclient->obuf; |
612 | stream_reset(s); | |
613 | ||
996c9314 LB |
614 | zclient_create_header( |
615 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
616 | bgp->vrf_id); | |
d62a17ae | 617 | stream_putl(s, vpn->vni); |
3714a385 | 618 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 619 | /* IP address length and IP address, if any. */ |
3714a385 | 620 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 621 | stream_putw(s, 0); |
d62a17ae | 622 | else { |
3714a385 | 623 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 624 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 625 | stream_putw(s, ipa_len); |
3714a385 | 626 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 627 | } |
9c7edc03 AK |
628 | /* If the ESI is valid that becomes the nexthop; tape out the |
629 | * VTEP-IP for that case | |
c44ab6f1 | 630 | */ |
9c7edc03 | 631 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 632 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
633 | else |
634 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 635 | |
ead40654 | 636 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 637 | /* Also TX the sequence number of the best route. */ |
638 | if (add) { | |
ead40654 | 639 | stream_putc(s, flags); |
f07e1c99 | 640 | stream_putl(s, seq); |
c44ab6f1 | 641 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 642 | } |
d62a17ae | 643 | |
644 | stream_putw_at(s, 0, stream_get_endp(s)); | |
645 | ||
646 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 647 | zlog_debug( |
c0d72166 | 648 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4", |
996c9314 | 649 | add ? "ADD" : "DEL", vpn->vni, |
c0d72166 DS |
650 | &p->prefix.macip_addr.mac, &p->prefix.macip_addr.ip, |
651 | flags, seq, &remote_vtep_ip); | |
d62a17ae | 652 | |
23aa35ad AK |
653 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
654 | esi); | |
655 | ||
d62a17ae | 656 | return zclient_send_message(zclient); |
7ef5a232 | 657 | } |
b18825eb | 658 | |
128ea8ab | 659 | /* |
660 | * Add (update) or delete remote VTEP from zebra. | |
661 | */ | |
d62a17ae | 662 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
663 | const struct prefix_evpn *p, |
664 | int flood_control, int add) | |
128ea8ab | 665 | { |
d62a17ae | 666 | struct stream *s; |
128ea8ab | 667 | |
d62a17ae | 668 | /* Check socket. */ |
669 | if (!zclient || zclient->sock < 0) | |
670 | return 0; | |
128ea8ab | 671 | |
d62a17ae | 672 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
673 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
674 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
675 | zlog_debug( |
676 | "%s: No zebra instance to talk to, not installing remote vtep", | |
677 | __func__); | |
d62a17ae | 678 | return 0; |
bb4ef1ae | 679 | } |
128ea8ab | 680 | |
d62a17ae | 681 | s = zclient->obuf; |
682 | stream_reset(s); | |
128ea8ab | 683 | |
996c9314 LB |
684 | zclient_create_header( |
685 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
686 | bgp->vrf_id); | |
d62a17ae | 687 | stream_putl(s, vpn->vni); |
3714a385 | 688 | if (is_evpn_prefix_ipaddr_v4(p)) |
689 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
690 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 691 | flog_err( |
e50f7cfd | 692 | EC_BGP_VTEP_INVALID, |
d62a17ae | 693 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
694 | add ? "ADD" : "DEL", vpn->vni); | |
695 | return -1; | |
696 | } | |
b16dd019 | 697 | stream_putl(s, flood_control); |
128ea8ab | 698 | |
d62a17ae | 699 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 700 | |
d62a17ae | 701 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 702 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 703 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 704 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 705 | |
23aa35ad AK |
706 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
707 | ||
d62a17ae | 708 | return zclient_send_message(zclient); |
128ea8ab | 709 | } |
710 | ||
342dd0c6 | 711 | /* |
712 | * Build extended communities for EVPN prefix route. | |
713 | */ | |
714 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
715 | struct attr *attr) | |
716 | { | |
717 | struct ecommunity ecom_encap; | |
342dd0c6 | 718 | struct ecommunity_val eval; |
719 | struct ecommunity_val eval_rmac; | |
720 | bgp_encap_types tnl_type; | |
721 | struct listnode *node, *nnode; | |
722 | struct ecommunity *ecom; | |
fab92da7 | 723 | struct ecommunity *old_ecom; |
342dd0c6 | 724 | struct list *vrf_export_rtl = NULL; |
725 | ||
726 | /* Encap */ | |
727 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
728 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
729 | encode_encap_extcomm(tnl_type, &eval); | |
730 | ecom_encap.size = 1; | |
34540b0d | 731 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 732 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 733 | |
734 | /* Add Encap */ | |
b53e67a3 DA |
735 | if (bgp_attr_get_ecommunity(attr)) { |
736 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 737 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
738 | if (!old_ecom->refcnt) | |
739 | ecommunity_free(&old_ecom); | |
740 | } else | |
741 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 742 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 743 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 744 | |
745 | /* Add the export RTs for L3VNI/VRF */ | |
746 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f | 747 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
748 | bgp_attr_set_ecommunity( |
749 | attr, | |
750 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
342dd0c6 | 751 | |
752 | /* add the router mac extended community */ | |
753 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 754 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
755 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
756 | true, true); | |
342dd0c6 | 757 | } |
342dd0c6 | 758 | } |
759 | ||
128ea8ab | 760 | /* |
1ec31309 | 761 | * Build extended communities for EVPN route. |
762 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
763 | * and ENCAP extended communities are applicable for all routes. | |
764 | * The default gateway extended community and MAC mobility (sticky) extended | |
765 | * community are added as needed based on passed settings - only for type-2 | |
766 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
767 | * added, if present, based on passed settings - only for non-link-local | |
768 | * type-2 routes. | |
128ea8ab | 769 | */ |
7ec156a9 | 770 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 771 | int add_l3_ecomm) |
128ea8ab | 772 | { |
d62a17ae | 773 | struct ecommunity ecom_encap; |
774 | struct ecommunity ecom_sticky; | |
ead40654 | 775 | struct ecommunity ecom_default_gw; |
68e33151 | 776 | struct ecommunity ecom_na; |
d62a17ae | 777 | struct ecommunity_val eval; |
778 | struct ecommunity_val eval_sticky; | |
ead40654 | 779 | struct ecommunity_val eval_default_gw; |
bc59a672 | 780 | struct ecommunity_val eval_rmac; |
68e33151 | 781 | struct ecommunity_val eval_na; |
9c7edc03 | 782 | bool proxy; |
68e33151 | 783 | |
d62a17ae | 784 | bgp_encap_types tnl_type; |
785 | struct listnode *node, *nnode; | |
786 | struct ecommunity *ecom; | |
d7c0a89a | 787 | uint32_t seqnum; |
7a3e76f1 | 788 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 789 | |
d62a17ae | 790 | /* Encap */ |
791 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
792 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
793 | encode_encap_extcomm(tnl_type, &eval); | |
794 | ecom_encap.size = 1; | |
34540b0d | 795 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 796 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 797 | |
d62a17ae | 798 | /* Add Encap */ |
b53e67a3 | 799 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 800 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 801 | |
7a3e76f1 | 802 | /* Add the export RTs for L2VNI */ |
d62a17ae | 803 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
804 | bgp_attr_set_ecommunity( |
805 | attr, | |
806 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 807 | |
1ec31309 | 808 | /* Add the export RTs for L3VNI if told to - caller determines |
809 | * when this should be done. | |
523cafc4 | 810 | */ |
1ec31309 | 811 | if (add_l3_ecomm) { |
7ec156a9 MK |
812 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
813 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
814 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
815 | ecom)) | |
b53e67a3 DA |
816 | bgp_attr_set_ecommunity( |
817 | attr, | |
818 | ecommunity_merge( | |
819 | bgp_attr_get_ecommunity(attr), | |
820 | ecom)); | |
7ec156a9 | 821 | } |
f1f8b53c | 822 | } |
7a3e76f1 | 823 | |
1ec31309 | 824 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 825 | if (attr->sticky) { |
826 | seqnum = 0; | |
827 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
828 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
829 | ecom_sticky.size = 1; | |
34540b0d | 830 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 831 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
832 | bgp_attr_set_ecommunity( |
833 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
834 | &ecom_sticky)); | |
d62a17ae | 835 | } |
c85c03c7 | 836 | |
1ec31309 | 837 | /* Add RMAC, if told to. */ |
838 | if (add_l3_ecomm) { | |
bc59a672 | 839 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
840 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
841 | true, true); | |
bc59a672 MK |
842 | } |
843 | ||
1ec31309 | 844 | /* Add default gateway, if needed. */ |
ead40654 MK |
845 | if (attr->default_gw) { |
846 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
847 | encode_default_gw_extcomm(&eval_default_gw); | |
848 | ecom_default_gw.size = 1; | |
34540b0d | 849 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 850 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
851 | bgp_attr_set_ecommunity( |
852 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
853 | &ecom_default_gw)); | |
ead40654 MK |
854 | } |
855 | ||
9c7edc03 AK |
856 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
857 | if (attr->router_flag || proxy) { | |
68e33151 | 858 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 859 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 860 | ecom_na.size = 1; |
34540b0d | 861 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 862 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
863 | bgp_attr_set_ecommunity( |
864 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
865 | &ecom_na)); | |
68e33151 | 866 | } |
128ea8ab | 867 | } |
868 | ||
869 | /* | |
870 | * Add MAC mobility extended community to attribute. | |
871 | */ | |
d7c0a89a | 872 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 873 | { |
874 | struct ecommunity ecom_tmp; | |
875 | struct ecommunity_val eval; | |
d7c0a89a | 876 | uint8_t *ecom_val_ptr; |
f6e07e1b | 877 | uint32_t i; |
d7c0a89a | 878 | uint8_t *pnt; |
d62a17ae | 879 | int type = 0; |
880 | int sub_type = 0; | |
b53e67a3 | 881 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 882 | |
883 | /* Build MM */ | |
884 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
885 | ||
886 | /* Find current MM ecommunity */ | |
421bb26a | 887 | ecom_val_ptr = NULL; |
d62a17ae | 888 | |
b53e67a3 DA |
889 | if (ecomm) { |
890 | for (i = 0; i < ecomm->size; i++) { | |
891 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 892 | type = *pnt++; |
893 | sub_type = *pnt++; | |
894 | ||
895 | if (type == ECOMMUNITY_ENCODE_EVPN | |
896 | && sub_type | |
897 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 898 | ecom_val_ptr = |
b53e67a3 | 899 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 900 | break; |
901 | } | |
902 | } | |
903 | } | |
904 | ||
905 | /* Update the existing MM ecommunity */ | |
421bb26a | 906 | if (ecom_val_ptr) { |
b53e67a3 | 907 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 908 | } |
909 | /* Add MM to existing */ | |
910 | else { | |
911 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
912 | ecom_tmp.size = 1; | |
34540b0d | 913 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 914 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 915 | |
b53e67a3 DA |
916 | if (ecomm) |
917 | bgp_attr_set_ecommunity( | |
918 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 919 | else |
b53e67a3 DA |
920 | bgp_attr_set_ecommunity(attr, |
921 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 922 | } |
128ea8ab | 923 | } |
924 | ||
925 | /* Install EVPN route into zebra. */ | |
d62a17ae | 926 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
927 | const struct prefix_evpn *p, |
928 | struct bgp_path_info *pi) | |
128ea8ab | 929 | { |
d62a17ae | 930 | int ret; |
d594a14c | 931 | uint8_t flags; |
b16dd019 | 932 | int flood_control; |
9c7edc03 | 933 | uint32_t seq; |
128ea8ab | 934 | |
d594a14c AK |
935 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
936 | flags = 0; | |
9c7edc03 AK |
937 | |
938 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
939 | if (pi->attr->sticky) | |
940 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
941 | if (pi->attr->default_gw) | |
942 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
943 | if (is_evpn_prefix_ipaddr_v6(p) && | |
944 | pi->attr->router_flag) | |
945 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
946 | ||
947 | seq = mac_mobility_seqnum(pi->attr); | |
948 | /* if local ES notify zebra that this is a sync path */ | |
949 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
950 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
951 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
952 | SET_FLAG(flags, | |
953 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
954 | } | |
955 | } else { | |
956 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
957 | return 0; | |
958 | ||
959 | /* if a local path is being turned around and sent | |
960 | * to zebra it is because it is a sync path on | |
961 | * a local ES | |
962 | */ | |
963 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
964 | /* supply the highest peer seq number to zebra | |
965 | * for MM seq syncing | |
966 | */ | |
967 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
968 | /* if any of the paths from the peer have the ROUTER | |
969 | * flag set install the local entry as a router entry | |
970 | */ | |
971 | if (is_evpn_prefix_ipaddr_v6(p) && | |
972 | (pi->attr->es_flags & | |
973 | ATTR_ES_PEER_ROUTER)) | |
974 | SET_FLAG(flags, | |
975 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
976 | ||
977 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
978 | SET_FLAG(flags, | |
979 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
980 | } | |
981 | ||
d594a14c | 982 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
983 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
984 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
985 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
986 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 987 | } else { |
2a3f51cf | 988 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
989 | case PMSI_TNLTYPE_INGR_REPL: |
990 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
991 | break; | |
992 | ||
993 | case PMSI_TNLTYPE_PIM_SM: | |
994 | flood_control = VXLAN_FLOOD_PIM_SM; | |
995 | break; | |
996 | ||
997 | default: | |
998 | flood_control = VXLAN_FLOOD_DISABLED; | |
999 | break; | |
1000 | } | |
1001 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1002 | } |
128ea8ab | 1003 | |
d62a17ae | 1004 | return ret; |
128ea8ab | 1005 | } |
1006 | ||
1007 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1008 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1009 | const struct prefix_evpn *p, |
d62a17ae | 1010 | struct in_addr remote_vtep_ip) |
128ea8ab | 1011 | { |
d62a17ae | 1012 | int ret; |
128ea8ab | 1013 | |
d62a17ae | 1014 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1015 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1016 | 0, 0, 0, NULL); |
1017 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1018 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1019 | else |
b16dd019 AK |
1020 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1021 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1022 | |
d62a17ae | 1023 | return ret; |
128ea8ab | 1024 | } |
1025 | ||
1026 | /* | |
1027 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1028 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1029 | * from peers. | |
1030 | */ | |
d62a17ae | 1031 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1032 | struct bgp_dest *dest, |
9c7edc03 AK |
1033 | struct bgp_path_info *old_local, |
1034 | struct bgp_path_info *new_select) | |
128ea8ab | 1035 | { |
9bcb3eef | 1036 | struct bgp_dest *global_dest; |
40381db7 | 1037 | struct bgp_path_info *pi; |
d62a17ae | 1038 | afi_t afi = AFI_L2VPN; |
1039 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1040 | |
9c7edc03 | 1041 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1042 | char esi_buf[ESI_STR_LEN]; |
1043 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1044 | struct prefix_evpn *evp = |
1045 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1046 | |
2dbe669b DA |
1047 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1048 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1049 | sizeof(esi_buf)), | |
1050 | new_select ? esi_to_str(&new_select->attr->esi, | |
1051 | esi_buf2, sizeof(esi_buf2)) | |
1052 | : ""); | |
9c7edc03 AK |
1053 | } |
1054 | ||
d62a17ae | 1055 | /* Locate route node in the global EVPN routing table. Note that |
1056 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1057 | * L3VPN routes. | |
1058 | */ | |
c44ab6f1 AK |
1059 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1060 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1061 | &vpn->prd); | |
9bcb3eef | 1062 | if (global_dest) { |
d62a17ae | 1063 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1064 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1065 | |
d62a17ae | 1066 | /* Schedule for processing - withdraws to peers happen from |
1067 | * this table. | |
1068 | */ | |
40381db7 | 1069 | if (pi) |
9bcb3eef DS |
1070 | bgp_process(bgp, global_dest, afi, safi); |
1071 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1072 | } |
128ea8ab | 1073 | |
d62a17ae | 1074 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1075 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1076 | } |
1077 | ||
1078 | /* | |
1079 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1080 | * if appropriate. | |
c44ab6f1 | 1081 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1082 | */ |
c44ab6f1 | 1083 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1084 | struct bgp_dest *dest) |
d62a17ae | 1085 | { |
4b7e6066 DS |
1086 | struct bgp_path_info *old_select, *new_select; |
1087 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1088 | afi_t afi = AFI_L2VPN; |
1089 | safi_t safi = SAFI_EVPN; | |
1090 | int ret = 0; | |
1091 | ||
1092 | /* Compute the best path. */ | |
9bcb3eef | 1093 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1094 | afi, safi); |
1095 | old_select = old_and_new.old; | |
1096 | new_select = old_and_new.new; | |
1097 | ||
1098 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1099 | * update to zebra RIB. |
1100 | * Remote routes and SYNC route (i.e. local routes with | |
1101 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1102 | * change. | |
d62a17ae | 1103 | */ |
1104 | if (old_select && old_select == new_select | |
1105 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1106 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1107 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1108 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1109 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1110 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1111 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1112 | ret = evpn_zebra_install( |
9bcb3eef DS |
1113 | bgp, vpn, |
1114 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1115 | dest), | |
d594a14c | 1116 | old_select); |
1defdda8 | 1117 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1118 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1119 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1120 | return ret; |
1121 | } | |
1122 | ||
1123 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1124 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1125 | |
1126 | /* bestpath has changed; update relevant fields and install or uninstall | |
1127 | * into the zebra RIB. | |
1128 | */ | |
1129 | if (old_select || new_select) | |
9bcb3eef | 1130 | bgp_bump_version(dest); |
d62a17ae | 1131 | |
1132 | if (old_select) | |
9bcb3eef | 1133 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1134 | if (new_select) { |
9bcb3eef DS |
1135 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1136 | bgp_path_info_unset_flag(dest, new_select, | |
1137 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1138 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1139 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1140 | } |
1141 | ||
9c7edc03 AK |
1142 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1143 | * to zebra | |
1144 | */ | |
d62a17ae | 1145 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1146 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1147 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1148 | ret = evpn_zebra_install( |
9bcb3eef DS |
1149 | bgp, vpn, |
1150 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1151 | new_select); |
d594a14c | 1152 | |
d62a17ae | 1153 | /* If an old best existed and it was a "local" route, the only |
1154 | * reason | |
1155 | * it would be supplanted is due to MAC mobility procedures. So, | |
1156 | * we | |
1157 | * need to do an implicit delete and withdraw that route from | |
1158 | * peers. | |
1159 | */ | |
9c7edc03 AK |
1160 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1161 | old_select && old_select->peer == bgp->peer_self | |
1162 | && old_select->type == ZEBRA_ROUTE_BGP | |
1163 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1164 | && vpn) | |
1165 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1166 | old_select, new_select); | |
d62a17ae | 1167 | } else { |
1168 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1169 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1170 | ret = evpn_zebra_uninstall( |
1171 | bgp, vpn, | |
9bcb3eef DS |
1172 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1173 | dest), | |
b54892e0 | 1174 | old_select->attr->nexthop); |
d62a17ae | 1175 | } |
1176 | ||
1177 | /* Clear any route change flags. */ | |
9bcb3eef | 1178 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1179 | |
18ee8310 | 1180 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1181 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1182 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1183 | |
1184 | return ret; | |
128ea8ab | 1185 | } |
1186 | ||
9c7edc03 AK |
1187 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1188 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1189 | { |
40381db7 | 1190 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1191 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1192 | |
9bcb3eef | 1193 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1194 | tmp_pi = tmp_pi->next) { |
1195 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1196 | local_pi = tmp_pi; |
9c7edc03 AK |
1197 | break; |
1198 | } | |
d62a17ae | 1199 | } |
c85c03c7 | 1200 | |
9c7edc03 | 1201 | return local_pi; |
c85c03c7 | 1202 | } |
1203 | ||
5e53dce3 | 1204 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1205 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1206 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1207 | struct attr *attr, int *route_changed) |
342dd0c6 | 1208 | { |
1209 | struct attr *attr_new = NULL; | |
40381db7 | 1210 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1211 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1212 | struct bgp_path_info *local_pi = NULL; |
1213 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1214 | |
5424b7ba | 1215 | *route_changed = 0; |
342dd0c6 | 1216 | /* locate the local route entry if any */ |
9bcb3eef | 1217 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1218 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1219 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1220 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1221 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1222 | local_pi = tmp_pi; | |
342dd0c6 | 1223 | } |
1224 | ||
2bb9eff4 | 1225 | /* |
0437e105 | 1226 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1227 | * Otherwise see if route attr has changed |
523cafc4 | 1228 | */ |
40381db7 | 1229 | if (!local_pi) { |
342dd0c6 | 1230 | |
5424b7ba MK |
1231 | /* route has changed as this is the first entry */ |
1232 | *route_changed = 1; | |
1233 | ||
342dd0c6 | 1234 | /* Add (or update) attribute to hash. */ |
1235 | attr_new = bgp_attr_intern(attr); | |
1236 | ||
1237 | /* create the route info from attribute */ | |
40381db7 | 1238 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1239 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1240 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1241 | |
b57ba6d2 | 1242 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1243 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1244 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1245 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1246 | pi->extra->num_labels = 1; | |
342dd0c6 | 1247 | |
1248 | /* add the route entry to route node*/ | |
9bcb3eef | 1249 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1250 | } else { |
1251 | ||
40381db7 DS |
1252 | tmp_pi = local_pi; |
1253 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1254 | |
1255 | /* attribute changed */ | |
1256 | *route_changed = 1; | |
1257 | ||
342dd0c6 | 1258 | /* The attribute has changed. */ |
1259 | /* Add (or update) attribute to hash. */ | |
1260 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1261 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1262 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1263 | |
1264 | /* Restore route, if needed. */ | |
40381db7 | 1265 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1266 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1267 | |
1268 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1269 | bgp_attr_unintern(&tmp_pi->attr); |
1270 | tmp_pi->attr = attr_new; | |
1271 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1272 | } |
1273 | } | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | /* update evpn type-5 route entry */ | |
996c9314 | 1278 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1279 | struct attr *src_attr, afi_t src_afi, |
1280 | safi_t src_safi) | |
342dd0c6 | 1281 | { |
1282 | afi_t afi = AFI_L2VPN; | |
1283 | safi_t safi = SAFI_EVPN; | |
1284 | struct attr attr; | |
9bcb3eef | 1285 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1286 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1287 | int route_changed = 0; |
342dd0c6 | 1288 | |
5e53dce3 T |
1289 | bgp_evpn = bgp_get_evpn(); |
1290 | if (!bgp_evpn) | |
faafdfa8 | 1291 | return 0; |
342dd0c6 | 1292 | |
2f69f6d3 | 1293 | /* Build path attribute for this route - use the source attr, if |
1294 | * present, else treat as locally originated. | |
1295 | */ | |
1296 | if (src_attr) | |
6f4f49b2 | 1297 | attr = *src_attr; |
2f69f6d3 | 1298 | else { |
1299 | memset(&attr, 0, sizeof(struct attr)); | |
1300 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1301 | } | |
5394a276 | 1302 | |
5394a276 CS |
1303 | /* Advertise Primary IP (PIP) is enabled, send individual |
1304 | * IP (default instance router-id) as nexthop. | |
1305 | * PIP is disabled or vrr interface is not present | |
27727001 | 1306 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1307 | */ |
1308 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1309 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1310 | attr.nexthop = bgp_vrf->originator_ip; | |
1311 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1312 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1313 | } else { |
27727001 CS |
1314 | /* copy sys rmac */ |
1315 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1316 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1317 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1318 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1319 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1320 | if (bgp_debug_zebra(NULL)) |
1321 | zlog_debug( | |
1322 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1323 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1324 | } |
1325 | ||
c0d72166 DS |
1326 | if (bgp_debug_zebra(NULL)) |
1327 | zlog_debug( | |
1328 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1329 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1330 | &attr.nexthop); | |
5394a276 | 1331 | |
342dd0c6 | 1332 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1333 | |
6c995628 AD |
1334 | if (src_afi == AFI_IP6 && |
1335 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1336 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1337 | if (src_attr && | |
1338 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1339 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1340 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1341 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1342 | &src_attr->mp_nexthop_global, |
1343 | sizeof(struct in6_addr)); | |
1344 | } | |
1345 | } else if (src_afi == AFI_IP && | |
1346 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1347 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1348 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1349 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1350 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1351 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1352 | &src_attr->nexthop, sizeof(struct in_addr)); |
1353 | } | |
1354 | } | |
1355 | ||
342dd0c6 | 1356 | /* Setup RT and encap extended community */ |
1357 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1358 | ||
1359 | /* get the route node in global table */ | |
c44ab6f1 AK |
1360 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1361 | (const struct prefix_evpn *)evp, | |
1362 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1363 | assert(dest); |
342dd0c6 | 1364 | |
1365 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1366 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1367 | &route_changed); |
342dd0c6 | 1368 | |
1369 | /* schedule for processing and unlock node */ | |
5424b7ba | 1370 | if (route_changed) { |
9bcb3eef DS |
1371 | bgp_process(bgp_evpn, dest, afi, safi); |
1372 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1373 | } |
342dd0c6 | 1374 | |
1375 | /* uninten temporary */ | |
5ee65f6f | 1376 | if (!src_attr) |
1377 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1378 | return 0; |
1379 | } | |
1380 | ||
9c7edc03 | 1381 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1382 | struct bgp_dest *dest, uint32_t loc_seq, |
1383 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1384 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1385 | { |
1386 | struct bgp_path_info *tmp_pi; | |
1387 | struct bgp_path_info *second_best_path = NULL; | |
1388 | uint32_t tmp_mm_seq = 0; | |
1389 | esi_t *tmp_esi; | |
1390 | int paths_eq; | |
1391 | ||
1392 | /* find the best non-local path. a local path can only be present | |
1393 | * as best path | |
1394 | */ | |
09319b4e DS |
1395 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1396 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1397 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1398 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1399 | continue; | |
1400 | ||
1401 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1402 | second_best_path, &paths_eq)) | |
1403 | second_best_path = tmp_pi; | |
1404 | } | |
1405 | ||
1406 | if (!second_best_path) | |
1407 | return; | |
1408 | ||
1409 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1410 | /* if this has the same ES desination as the local path | |
1411 | * it is a sync path | |
1412 | */ | |
1413 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1414 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1415 | if (tmp_mm_seq < loc_seq) | |
1416 | return; | |
1417 | ||
1418 | /* we have a non-proxy path from the ES peer. */ | |
1419 | if (second_best_path->attr->es_flags & | |
1420 | ATTR_ES_PROXY_ADVERT) { | |
1421 | *proxy_from_peer = true; | |
1422 | } else { | |
1423 | *active_on_peer = true; | |
1424 | } | |
1425 | ||
1426 | if (second_best_path->attr->router_flag) | |
1427 | *peer_router = true; | |
1428 | ||
1429 | /* we use both proxy and non-proxy imports to | |
1430 | * determine the max sync sequence | |
1431 | */ | |
1432 | if (tmp_mm_seq > *max_sync_seq) | |
1433 | *max_sync_seq = tmp_mm_seq; | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1438 | * This is need for MM sequence number syncing and proxy advertisement. | |
1439 | * Note: The local path can only exist as a best path in the | |
1440 | * VPN route table. It will take precedence over all sync paths. | |
1441 | */ | |
1442 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1443 | struct bgp_dest *dest, |
1444 | struct attr *attr, | |
1445 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1446 | { |
1447 | esi_t *esi; | |
752eed47 DS |
1448 | struct prefix_evpn *evp = |
1449 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1450 | |
1451 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1452 | return; | |
1453 | ||
1454 | esi = bgp_evpn_attr_get_esi(attr); | |
1455 | if (bgp_evpn_is_esi_valid(esi)) { | |
1456 | if (setup_sync) { | |
1457 | uint32_t max_sync_seq = 0; | |
1458 | bool active_on_peer = false; | |
1459 | bool peer_router = false; | |
1460 | bool proxy_from_peer = false; | |
1461 | ||
09319b4e DS |
1462 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1463 | &max_sync_seq, &active_on_peer, | |
1464 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1465 | attr->mm_sync_seqnum = max_sync_seq; |
1466 | if (active_on_peer) | |
1467 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1468 | else | |
1469 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1470 | if (proxy_from_peer) | |
1471 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1472 | else | |
1473 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1474 | if (peer_router) | |
1475 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1476 | else | |
1477 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1478 | ||
1479 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1480 | char esi_buf[ESI_STR_LEN]; |
1481 | ||
2dbe669b DA |
1482 | zlog_debug( |
1483 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1484 | evp, | |
9c7edc03 | 1485 | esi_to_str(esi, esi_buf, |
2dbe669b | 1486 | sizeof(esi_buf)), |
9c7edc03 | 1487 | max_sync_seq, |
2dbe669b DA |
1488 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1489 | ? "peer-active " | |
1490 | : "", | |
1491 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1492 | ? "peer-proxy " | |
1493 | : "", | |
1494 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1495 | ? "peer-router " | |
1496 | : ""); | |
9c7edc03 AK |
1497 | } |
1498 | } | |
1499 | } else { | |
1500 | attr->mm_sync_seqnum = 0; | |
1501 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1502 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1503 | } | |
1504 | } | |
1505 | ||
128ea8ab | 1506 | /* |
1507 | * Create or update EVPN route entry. This could be in the VNI route table | |
1508 | * or the global route table. | |
1509 | */ | |
d62a17ae | 1510 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1511 | afi_t afi, safi_t safi, |
1512 | struct bgp_dest *dest, struct attr *attr, | |
1513 | int add, struct bgp_path_info **pi, | |
1514 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1515 | bool *old_is_sync) |
d62a17ae | 1516 | { |
40381db7 DS |
1517 | struct bgp_path_info *tmp_pi; |
1518 | struct bgp_path_info *local_pi; | |
d62a17ae | 1519 | struct attr *attr_new; |
b57ba6d2 | 1520 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1521 | uint32_t num_labels = 1; |
d62a17ae | 1522 | int route_change = 1; |
d7c0a89a | 1523 | uint8_t sticky = 0; |
b54892e0 | 1524 | const struct prefix_evpn *evp; |
d62a17ae | 1525 | |
40381db7 | 1526 | *pi = NULL; |
9bcb3eef | 1527 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1528 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1529 | |
f07e1c99 | 1530 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1531 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1532 | |
1533 | /* If route doesn't exist already, create a new one, if told to. | |
1534 | * Otherwise act based on whether the attributes of the route have | |
1535 | * changed or not. | |
1536 | */ | |
40381db7 | 1537 | if (!local_pi && !add) |
d62a17ae | 1538 | return 0; |
1539 | ||
9c7edc03 AK |
1540 | if (old_is_sync && local_pi) |
1541 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1542 | ||
1543 | /* if a local path is being added with a non-zero esi look | |
1544 | * for SYNC paths from ES peers and bubble up the sync-info | |
1545 | */ | |
26c03e43 | 1546 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1547 | |
f07e1c99 | 1548 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1549 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1550 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1551 | |
40381db7 | 1552 | if (!local_pi) { |
d62a17ae | 1553 | /* Add (or update) attribute to hash. */ |
1554 | attr_new = bgp_attr_intern(attr); | |
1555 | ||
1556 | /* Extract MAC mobility sequence number, if any. */ | |
1557 | attr_new->mm_seqnum = | |
1558 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1559 | attr_new->sticky = sticky; | |
1560 | ||
1561 | /* Create new route with its attribute. */ | |
40381db7 | 1562 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1563 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1564 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1565 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1566 | |
1567 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1568 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1569 | |
1570 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1571 | * Only attach second label if we are advertising two labels for | |
1572 | * type-2 routes. | |
1573 | */ | |
996c9314 LB |
1574 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1575 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1576 | vni_t l3vni; |
1577 | ||
1578 | l3vni = bgpevpn_get_l3vni(vpn); | |
1579 | if (l3vni) { | |
1580 | vni2label(l3vni, &label[1]); | |
1581 | num_labels++; | |
1582 | } | |
1583 | } | |
d62a17ae | 1584 | |
40381db7 DS |
1585 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1586 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1587 | /* Mark route as self type-2 route */ |
1588 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1589 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1590 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1591 | } else { |
40381db7 DS |
1592 | tmp_pi = local_pi; |
1593 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1594 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1595 | route_change = 0; |
1596 | else { | |
c48d9f5f MK |
1597 | /* |
1598 | * The attributes have changed, type-2 routes needs to | |
1599 | * be advertised with right labels. | |
1600 | */ | |
1601 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1602 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1603 | && CHECK_FLAG(vpn->flags, | |
1604 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1605 | vni_t l3vni; |
1606 | ||
1607 | l3vni = bgpevpn_get_l3vni(vpn); | |
1608 | if (l3vni) { | |
1609 | vni2label(l3vni, &label[1]); | |
1610 | num_labels++; | |
1611 | } | |
1612 | } | |
40381db7 DS |
1613 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1614 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1615 | |
d62a17ae | 1616 | /* The attribute has changed. */ |
1617 | /* Add (or update) attribute to hash. */ | |
1618 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1619 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1620 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1621 | |
f07e1c99 | 1622 | /* Extract MAC mobility sequence number, if any. */ |
1623 | attr_new->mm_seqnum = | |
1624 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1625 | attr_new->sticky = sticky; | |
1626 | ||
d62a17ae | 1627 | /* Restore route, if needed. */ |
40381db7 | 1628 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1629 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1630 | |
1631 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1632 | bgp_attr_unintern(&tmp_pi->attr); |
1633 | tmp_pi->attr = attr_new; | |
1634 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1635 | } |
1636 | } | |
1637 | ||
58bff4d1 AK |
1638 | /* local MAC-IP routes in the VNI table are linked to |
1639 | * the destination ES | |
26c03e43 AK |
1640 | */ |
1641 | if (route_change && vpn_rt | |
1642 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1643 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1644 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1645 | ||
d62a17ae | 1646 | /* Return back the route entry. */ |
40381db7 | 1647 | *pi = tmp_pi; |
d62a17ae | 1648 | return route_change; |
128ea8ab | 1649 | } |
1650 | ||
ec0ab544 | 1651 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1652 | struct bgpevpn *vpn, |
1653 | struct bgp_dest *dest) | |
ec0ab544 AK |
1654 | { |
1655 | struct bgp_path_info *tmp_ri; | |
1656 | struct bgp_path_info *curr_select = NULL; | |
1657 | ||
9bcb3eef DS |
1658 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1659 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1660 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1661 | curr_select = tmp_ri; | |
1662 | break; | |
1663 | } | |
1664 | } | |
1665 | ||
1666 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1667 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1668 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1669 | evpn_zebra_install(bgp, vpn, | |
1670 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1671 | curr_select); | |
ec0ab544 AK |
1672 | } |
1673 | ||
6d8c603a AK |
1674 | /* |
1675 | * If the local route was not selected evict it and tell zebra to re-add | |
1676 | * the best remote dest. | |
1677 | * | |
1678 | * Typically a local path added by zebra is expected to be selected as | |
1679 | * best. In which case when a remote path wins as best (later) | |
1680 | * evpn_route_select_install itself evicts the older-local-best path. | |
1681 | * | |
1682 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1683 | * is possible that the local path is no longer the "older" best path. | |
1684 | * It is a path that was never designated as best and hence requires | |
1685 | * additional handling to prevent bgp from injecting and holding on to a | |
1686 | * non-best local path. | |
1687 | */ | |
1688 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1689 | struct bgpevpn *vpn, | |
9bcb3eef | 1690 | struct bgp_dest *dest, |
9a8897aa | 1691 | struct bgp_path_info *local_pi) |
6d8c603a | 1692 | { |
6d8c603a | 1693 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1694 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1695 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1696 | dest); |
b54892e0 | 1697 | |
9c7edc03 | 1698 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1699 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1700 | |
1701 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1702 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1703 | } |
1704 | ||
70524092 AK |
1705 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
1706 | const struct prefix_evpn *p, | |
1707 | esi_t *esi) | |
1708 | { | |
1709 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
1710 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
1711 | || (is_evpn_prefix_ipaddr_v6(p) |
1712 | && !IN6_IS_ADDR_LINKLOCAL( | |
1713 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
1714 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
1715 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
1716 | } | |
1717 | ||
128ea8ab | 1718 | /* |
1719 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1720 | * and schedule for processing. | |
1721 | */ | |
d62a17ae | 1722 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1723 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1724 | uint32_t seq, esi_t *esi) |
128ea8ab | 1725 | { |
9bcb3eef | 1726 | struct bgp_dest *dest; |
d62a17ae | 1727 | struct attr attr; |
1728 | struct attr *attr_new; | |
1ec31309 | 1729 | int add_l3_ecomm = 0; |
40381db7 | 1730 | struct bgp_path_info *pi; |
d62a17ae | 1731 | afi_t afi = AFI_L2VPN; |
1732 | safi_t safi = SAFI_EVPN; | |
1733 | int route_change; | |
9c7edc03 | 1734 | bool old_is_sync = false; |
128ea8ab | 1735 | |
d62a17ae | 1736 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1737 | |
d62a17ae | 1738 | /* Build path-attribute for this route. */ |
1739 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1740 | attr.nexthop = vpn->originator_ip; | |
1741 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1742 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1743 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1744 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1745 | attr.router_flag = CHECK_FLAG(flags, |
1746 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1747 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1748 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1749 | ||
1750 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1751 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1752 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1753 | } | |
1754 | ||
be41eb68 | 1755 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1756 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1757 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1758 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1759 | } |
be41eb68 | 1760 | |
9c7edc03 | 1761 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
1762 | char buf3[ESI_STR_LEN]; |
1763 | ||
23d0a753 | 1764 | zlog_debug( |
c0d72166 | 1765 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
1766 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1767 | : " ", | |
c0d72166 | 1768 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 1769 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 1770 | } |
1ec31309 | 1771 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1772 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1773 | uint8_t af_flags = 0; | |
1774 | ||
1775 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1776 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1777 | ||
1778 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1779 | } |
1780 | ||
a21bd7a3 | 1781 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1782 | |
1ec31309 | 1783 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1784 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1785 | * these routes. | |
1786 | */ | |
70524092 AK |
1787 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
1788 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 1789 | |
1790 | /* Set up extended community. */ | |
1791 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1792 | |
d62a17ae | 1793 | /* First, create (or fetch) route node within the VNI. */ |
1794 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1795 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1796 | |
d62a17ae | 1797 | /* Create or update route entry. */ |
9bcb3eef | 1798 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1799 | 1, &pi, flags, seq, |
1800 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1801 | assert(pi); |
1802 | attr_new = pi->attr; | |
128ea8ab | 1803 | |
6d8c603a AK |
1804 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1805 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1806 | |
1807 | /* Perform route selection. Normally, the local route in the | |
1808 | * VNI is expected to win and be the best route. However, if | |
1809 | * there is a race condition where a host moved from local to | |
1810 | * remote and the remote route was received in BGP just prior | |
1811 | * to the local MACIP notification from zebra, the remote | |
1812 | * route would win, and we should evict the defunct local route | |
1813 | * and (re)install the remote route into zebra. | |
1814 | */ | |
9bcb3eef | 1815 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1816 | /* |
9a8897aa AK |
1817 | * If the new local route was not selected evict it and tell zebra |
1818 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1819 | * routes. | |
6d8c603a | 1820 | */ |
9c7edc03 | 1821 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1822 | route_change = 0; |
9c7edc03 AK |
1823 | } else { |
1824 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1825 | route_change = 0; | |
1826 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1827 | } else { | |
1828 | bool new_is_sync; | |
1829 | ||
1830 | /* If the local path already existed and is still the | |
1831 | * best path we need to also check if it transitioned | |
1832 | * from being a sync path to a non-sync path. If it | |
1833 | * it did we need to notify zebra that the sync-path | |
1834 | * has been removed. | |
1835 | */ | |
1836 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1837 | if (!new_is_sync && old_is_sync) | |
1838 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1839 | } | |
9a8897aa | 1840 | } |
6d8c603a AK |
1841 | bgp_path_info_unlock(pi); |
1842 | ||
9bcb3eef | 1843 | bgp_dest_unlock_node(dest); |
128ea8ab | 1844 | |
d62a17ae | 1845 | /* If this is a new route or some attribute has changed, export the |
1846 | * route to the global table. The route will be advertised to peers | |
1847 | * from there. Note that this table is a 2-level tree (RD-level + | |
1848 | * Prefix-level) similar to L3VPN routes. | |
1849 | */ | |
1850 | if (route_change) { | |
40381db7 | 1851 | struct bgp_path_info *global_pi; |
128ea8ab | 1852 | |
c44ab6f1 AK |
1853 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1854 | (const struct prefix_evpn *)p, | |
1855 | &vpn->prd); | |
9bcb3eef | 1856 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1857 | &global_pi, flags, seq, |
1858 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1859 | |
d62a17ae | 1860 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1861 | bgp_process(bgp, dest, afi, safi); |
1862 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1863 | } |
128ea8ab | 1864 | |
d62a17ae | 1865 | /* Unintern temporary. */ |
1866 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1867 | |
d62a17ae | 1868 | return 0; |
128ea8ab | 1869 | } |
1870 | ||
50f74cf1 | 1871 | /* |
1872 | * Delete EVPN route entry. | |
1873 | * The entry can be in ESI/VNI table or the global table. | |
1874 | */ | |
185fb14a | 1875 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1876 | struct bgp_dest *dest, |
40381db7 | 1877 | struct bgp_path_info **pi) |
342dd0c6 | 1878 | { |
40381db7 | 1879 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1880 | |
40381db7 | 1881 | *pi = NULL; |
342dd0c6 | 1882 | |
50f74cf1 | 1883 | /* Now, find matching route. */ |
9bcb3eef | 1884 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1885 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1886 | if (tmp_pi->peer == bgp->peer_self |
1887 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1888 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1889 | break; |
1890 | ||
40381db7 | 1891 | *pi = tmp_pi; |
342dd0c6 | 1892 | |
1893 | /* Mark route for delete. */ | |
40381db7 | 1894 | if (tmp_pi) |
9bcb3eef | 1895 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1896 | } |
1897 | ||
1898 | /* Delete EVPN type5 route */ | |
996c9314 | 1899 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1900 | { |
1901 | afi_t afi = AFI_L2VPN; | |
1902 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1903 | struct bgp_dest *dest = NULL; |
40381db7 | 1904 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1905 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1906 | |
5e53dce3 T |
1907 | bgp_evpn = bgp_get_evpn(); |
1908 | if (!bgp_evpn) | |
faafdfa8 | 1909 | return 0; |
342dd0c6 | 1910 | |
1911 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1912 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1913 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1914 | if (!dest) |
342dd0c6 | 1915 | return 0; |
1916 | ||
9bcb3eef | 1917 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1918 | if (pi) |
9bcb3eef DS |
1919 | bgp_process(bgp_evpn, dest, afi, safi); |
1920 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1921 | return 0; |
1922 | } | |
1923 | ||
128ea8ab | 1924 | /* |
1925 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1926 | * schedule for processing. | |
1927 | */ | |
d62a17ae | 1928 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1929 | struct prefix_evpn *p) | |
1930 | { | |
9bcb3eef | 1931 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1932 | struct bgp_path_info *pi; |
d62a17ae | 1933 | afi_t afi = AFI_L2VPN; |
1934 | safi_t safi = SAFI_EVPN; | |
1935 | ||
1936 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1937 | * there | |
1938 | * is nothing further to do. | |
1939 | */ | |
1940 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1941 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1942 | if (!dest) | |
d62a17ae | 1943 | return 0; |
1944 | ||
1945 | /* Next, locate route node in the global EVPN routing table. Note that | |
1946 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1947 | * L3VPN routes. | |
1948 | */ | |
c44ab6f1 AK |
1949 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1950 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1951 | if (global_dest) { |
d62a17ae | 1952 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1953 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1954 | |
1955 | /* Schedule for processing - withdraws to peers happen from | |
1956 | * this table. | |
1957 | */ | |
40381db7 | 1958 | if (pi) |
9bcb3eef DS |
1959 | bgp_process(bgp, global_dest, afi, safi); |
1960 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1961 | } |
1962 | ||
1963 | /* Delete route entry in the VNI route table. This can just be removed. | |
1964 | */ | |
9bcb3eef | 1965 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1966 | if (pi) { |
9bcb3eef DS |
1967 | bgp_path_info_reap(dest, pi); |
1968 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1969 | } |
9bcb3eef | 1970 | bgp_dest_unlock_node(dest); |
d62a17ae | 1971 | |
1972 | return 0; | |
128ea8ab | 1973 | } |
1974 | ||
70524092 AK |
1975 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1976 | struct bgp_dest *dest, | |
1977 | struct bgp_path_info *local_pi, | |
1978 | const char *caller) | |
9c7edc03 AK |
1979 | { |
1980 | afi_t afi = AFI_L2VPN; | |
1981 | safi_t safi = SAFI_EVPN; | |
1982 | struct bgp_path_info *pi; | |
1983 | struct attr attr; | |
1984 | struct attr *attr_new; | |
1985 | uint32_t seq; | |
1986 | int add_l3_ecomm = 0; | |
09319b4e | 1987 | struct bgp_dest *global_dest; |
9c7edc03 | 1988 | struct bgp_path_info *global_pi; |
752eed47 DS |
1989 | struct prefix_evpn *evp = |
1990 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1991 | int route_change; |
1992 | bool old_is_sync = false; | |
1993 | ||
1994 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1995 | return; | |
1996 | ||
1997 | /* | |
1998 | * Build attribute per local route as the MAC mobility and | |
1999 | * some other values could differ for different routes. The | |
2000 | * attributes will be shared in the hash table. | |
2001 | */ | |
2002 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2003 | attr.nexthop = vpn->originator_ip; | |
2004 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2005 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2006 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2007 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2008 | attr.es_flags = local_pi->attr->es_flags; | |
2009 | if (local_pi->attr->default_gw) { | |
2010 | attr.default_gw = 1; | |
2011 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2012 | attr.router_flag = 1; | |
2013 | } | |
2014 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
2015 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
2016 | local_pi->extra->af_flags); | |
2017 | vni2label(vpn->vni, &(attr.label)); | |
2018 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2019 | * using L3 VNI for type-2 routes also. | |
2020 | */ | |
70524092 AK |
2021 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2022 | vpn, evp, | |
2023 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
9c7edc03 AK |
2024 | |
2025 | /* Set up extended community. */ | |
2026 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2027 | seq = mac_mobility_seqnum(local_pi->attr); | |
2028 | ||
2029 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2030 | char buf3[ESI_STR_LEN]; |
2031 | ||
23d0a753 | 2032 | zlog_debug( |
c0d72166 | 2033 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2034 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2035 | : " ", | |
c0d72166 | 2036 | vpn->vni, evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2037 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2038 | attr.es_flags, caller); | |
9c7edc03 AK |
2039 | } |
2040 | ||
2041 | /* Update the route entry. */ | |
09319b4e DS |
2042 | route_change = update_evpn_route_entry( |
2043 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2044 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2045 | |
2046 | assert(pi); | |
2047 | attr_new = pi->attr; | |
2048 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2049 | bgp_path_info_lock(pi); | |
2050 | ||
2051 | /* Perform route selection. Normally, the local route in the | |
2052 | * VNI is expected to win and be the best route. However, | |
2053 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2054 | * that causes best selection to be based on next hop), a | |
2055 | * remote route could win. If the local route is the best, | |
2056 | * ensure it is updated in the global EVPN route table and | |
2057 | * advertised to peers; otherwise, ensure it is evicted and | |
2058 | * (re)install the remote route into zebra. | |
2059 | */ | |
09319b4e | 2060 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2061 | |
2062 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2063 | route_change = 0; | |
2064 | } else { | |
2065 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2066 | route_change = 0; | |
09319b4e | 2067 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2068 | } else { |
2069 | bool new_is_sync; | |
2070 | ||
2071 | /* If the local path already existed and is still the | |
2072 | * best path we need to also check if it transitioned | |
2073 | * from being a sync path to a non-sync path. If it | |
2074 | * it did we need to notify zebra that the sync-path | |
2075 | * has been removed. | |
2076 | */ | |
2077 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2078 | if (!new_is_sync && old_is_sync) | |
2079 | evpn_zebra_uninstall(bgp, vpn, | |
2080 | evp, zero_vtep_ip); | |
2081 | } | |
2082 | } | |
2083 | ||
2084 | ||
2085 | /* unlock pi */ | |
2086 | bgp_path_info_unlock(pi); | |
2087 | ||
2088 | if (route_change) { | |
2089 | /* Update route in global routing table. */ | |
09319b4e DS |
2090 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2091 | safi, evp, &vpn->prd); | |
2092 | assert(global_dest); | |
2093 | update_evpn_route_entry( | |
2094 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2095 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2096 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2097 | |
2098 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2099 | bgp_process(bgp, global_dest, afi, safi); |
2100 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2101 | } |
2102 | ||
2103 | /* Unintern temporary. */ | |
2104 | aspath_unintern(&attr.aspath); | |
2105 | } | |
2106 | ||
128ea8ab | 2107 | /* |
2108 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2109 | * be scheduled for advertise to peers. | |
2110 | */ | |
d62a17ae | 2111 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2112 | { | |
9bcb3eef | 2113 | struct bgp_dest *dest; |
9c7edc03 | 2114 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2115 | |
2116 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2117 | * routes updated, update corresponding entry in the global table too. | |
2118 | */ | |
9bcb3eef | 2119 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2120 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2121 | const struct prefix_evpn *evp = |
2122 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2123 | |
2124 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2125 | continue; | |
2126 | ||
f07e1c99 | 2127 | /* Identify local route. */ |
9bcb3eef | 2128 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2129 | tmp_pi = tmp_pi->next) { |
40381db7 | 2130 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2131 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2132 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2133 | break; |
7ec156a9 | 2134 | } |
d62a17ae | 2135 | |
40381db7 | 2136 | if (!tmp_pi) |
d62a17ae | 2137 | continue; |
2138 | ||
9c7edc03 AK |
2139 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2140 | __func__); | |
f07e1c99 | 2141 | } |
d62a17ae | 2142 | |
2143 | return 0; | |
128ea8ab | 2144 | } |
2145 | ||
2146 | /* | |
2147 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2148 | * global routing table. These are also scheduled for withdraw from peers. | |
2149 | */ | |
d62a17ae | 2150 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2151 | { |
d62a17ae | 2152 | afi_t afi; |
2153 | safi_t safi; | |
9bcb3eef | 2154 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2155 | struct bgp_table *table; |
40381db7 | 2156 | struct bgp_path_info *pi; |
128ea8ab | 2157 | |
d62a17ae | 2158 | afi = AFI_L2VPN; |
2159 | safi = SAFI_EVPN; | |
128ea8ab | 2160 | |
9bcb3eef DS |
2161 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2162 | (struct prefix *)&vpn->prd); | |
2163 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2164 | table = bgp_dest_get_bgp_table_info(rddest); | |
2165 | for (dest = bgp_table_top(table); dest; | |
2166 | dest = bgp_route_next(dest)) { | |
2167 | const struct prefix_evpn *evp = | |
2168 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2169 | dest); | |
128ea8ab | 2170 | |
d62a17ae | 2171 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2172 | continue; | |
128ea8ab | 2173 | |
9bcb3eef | 2174 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2175 | if (pi) |
9bcb3eef | 2176 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2177 | } |
2178 | } | |
128ea8ab | 2179 | |
d62a17ae | 2180 | /* Unlock RD node. */ |
9bcb3eef DS |
2181 | if (rddest) |
2182 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2183 | |
d62a17ae | 2184 | return 0; |
128ea8ab | 2185 | } |
2186 | ||
2187 | /* | |
2188 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2189 | * table as well as the per-VNI route table. | |
2190 | */ | |
d62a17ae | 2191 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2192 | { |
d62a17ae | 2193 | afi_t afi; |
2194 | safi_t safi; | |
9bcb3eef | 2195 | struct bgp_dest *dest; |
40381db7 | 2196 | struct bgp_path_info *pi; |
128ea8ab | 2197 | |
d62a17ae | 2198 | afi = AFI_L2VPN; |
2199 | safi = SAFI_EVPN; | |
128ea8ab | 2200 | |
d62a17ae | 2201 | /* First, walk the global route table for this VNI's type-2 local |
2202 | * routes. | |
2203 | * EVPN routes are a 2-level table, first get the RD table. | |
2204 | */ | |
2205 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2206 | |
d62a17ae | 2207 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2208 | for (dest = bgp_table_top(vpn->route_table); dest; |
2209 | dest = bgp_route_next(dest)) { | |
2210 | const struct prefix_evpn *evp = | |
2211 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2212 | |
d62a17ae | 2213 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2214 | continue; | |
128ea8ab | 2215 | |
9bcb3eef | 2216 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2217 | |
d62a17ae | 2218 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2219 | if (pi) |
9bcb3eef | 2220 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2221 | } |
128ea8ab | 2222 | |
d62a17ae | 2223 | return 0; |
128ea8ab | 2224 | } |
2225 | ||
2226 | /* | |
2227 | * Delete all routes in the per-VNI route table. | |
2228 | */ | |
d62a17ae | 2229 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2230 | { |
9bcb3eef | 2231 | struct bgp_dest *dest; |
40381db7 | 2232 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2233 | |
d62a17ae | 2234 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2235 | for (dest = bgp_table_top(vpn->route_table); dest; |
2236 | dest = bgp_route_next(dest)) { | |
2237 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2238 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2239 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2240 | bgp_path_info_delete(dest, pi); |
2241 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2242 | } |
2243 | } | |
128ea8ab | 2244 | |
d62a17ae | 2245 | return 0; |
128ea8ab | 2246 | } |
2247 | ||
833b8a50 AK |
2248 | /* BUM traffic flood mode per-l2-vni */ |
2249 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2250 | struct bgpevpn *vpn) | |
2251 | { | |
2252 | /* if flooding has been globally disabled per-vni mode is | |
2253 | * not relevant | |
2254 | */ | |
2255 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2256 | return VXLAN_FLOOD_DISABLED; | |
2257 | ||
2258 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2259 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2260 | return VXLAN_FLOOD_PIM_SM; | |
2261 | ||
2262 | /* default is ingress replication */ | |
2263 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2264 | } | |
2265 | ||
128ea8ab | 2266 | /* |
2267 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2268 | * export RT getting modified or change to tunnel IP. Note that these | |
2269 | * situations need the route in the per-VNI table as well as the global | |
2270 | * table to be updated (as attributes change). | |
2271 | */ | |
0ca10580 | 2272 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2273 | { |
d62a17ae | 2274 | int ret; |
2275 | struct prefix_evpn p; | |
128ea8ab | 2276 | |
9c49ac74 AD |
2277 | update_type1_routes_for_evi(bgp, vpn); |
2278 | ||
d62a17ae | 2279 | /* Update and advertise the type-3 route (only one) followed by the |
2280 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2281 | * |
2282 | * RT-3 only if doing head-end replication | |
d62a17ae | 2283 | */ |
833b8a50 AK |
2284 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2285 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2286 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2287 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2288 | if (ret) |
2289 | return ret; | |
2290 | } | |
128ea8ab | 2291 | |
d62a17ae | 2292 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2293 | } |
2294 | ||
2295 | /* | |
2296 | * Delete (and withdraw) local routes for specified VNI from the global | |
2297 | * table and per-VNI table. After this, remove all other routes from | |
2298 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2299 | * (advertise-all-vni) being disabled. | |
2300 | */ | |
d62a17ae | 2301 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2302 | { |
d62a17ae | 2303 | int ret; |
2304 | struct prefix_evpn p; | |
128ea8ab | 2305 | |
d62a17ae | 2306 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2307 | * followed by type-3 routes (only one) - for this VNI. | |
2308 | */ | |
2309 | ret = delete_all_type2_routes(bgp, vpn); | |
2310 | if (ret) | |
2311 | return ret; | |
128ea8ab | 2312 | |
d62a17ae | 2313 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2314 | ret = delete_evpn_route(bgp, vpn, &p); | |
2315 | if (ret) | |
2316 | return ret; | |
128ea8ab | 2317 | |
d62a17ae | 2318 | /* Delete all routes from the per-VNI table. */ |
2319 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2320 | } |
2321 | ||
76d07c7a AK |
2322 | /* |
2323 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2324 | * remove the type-3 route if any. A new type-3 route will be generated | |
2325 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2326 | */ | |
2327 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2328 | struct in_addr mcast_grp) | |
2329 | { | |
2330 | struct prefix_evpn p; | |
2331 | ||
2332 | vpn->mcast_grp = mcast_grp; | |
2333 | ||
2334 | if (is_vni_live(vpn)) { | |
2335 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2336 | delete_evpn_route(bgp, vpn, &p); | |
2337 | } | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
128ea8ab | 2342 | /* |
d1911c26 | 2343 | * There is a tunnel endpoint IP address change for this VNI, delete |
2344 | * prior type-3 route (if needed) and update. | |
2345 | * Note: Route re-advertisement happens elsewhere after other processing | |
2346 | * other changes. | |
128ea8ab | 2347 | */ |
d62a17ae | 2348 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2349 | struct in_addr originator_ip) | |
128ea8ab | 2350 | { |
d62a17ae | 2351 | struct prefix_evpn p; |
128ea8ab | 2352 | |
ddd16ed5 MK |
2353 | /* If VNI is not live, we only need to update the originator ip */ |
2354 | if (!is_vni_live(vpn)) { | |
2355 | vpn->originator_ip = originator_ip; | |
2356 | return 0; | |
2357 | } | |
2358 | ||
db0e1937 MK |
2359 | /* Update the tunnel-ip hash */ |
2360 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2361 | bgp_tip_add(bgp, &originator_ip); | |
2362 | ||
2363 | /* filter routes as martian nexthop db has changed */ | |
2364 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2365 | ||
d62a17ae | 2366 | /* Need to withdraw type-3 route as the originator IP is part |
2367 | * of the key. | |
2368 | */ | |
2369 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2370 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2371 | |
d62a17ae | 2372 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2373 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2374 | return 0; |
185fb14a | 2375 | } |
50f74cf1 | 2376 | |
185fb14a AK |
2377 | static struct bgp_path_info * |
2378 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2379 | struct bgp_dest *dest, struct attr *attr) | |
2380 | { | |
2381 | struct attr *attr_new; | |
2382 | struct bgp_path_info *pi; | |
50f74cf1 | 2383 | |
185fb14a AK |
2384 | /* Add (or update) attribute to hash. */ |
2385 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2386 | |
185fb14a AK |
2387 | /* Create new route with its attribute. */ |
2388 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2389 | attr_new, dest); | |
2390 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2391 | bgp_path_info_extra_get(pi); | |
2392 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2393 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2394 | if (parent_pi->extra) { | |
2395 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2396 | sizeof(pi->extra->label)); | |
2397 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2398 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2399 | } |
185fb14a | 2400 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2401 | |
185fb14a | 2402 | return pi; |
50f74cf1 | 2403 | } |
2404 | ||
d3135ba3 | 2405 | /* |
2406 | * Install route entry into the VRF routing table and invoke route selection. | |
2407 | */ | |
2408 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2409 | const struct prefix_evpn *evp, |
40381db7 | 2410 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2411 | { |
9bcb3eef | 2412 | struct bgp_dest *dest; |
40381db7 | 2413 | struct bgp_path_info *pi; |
1ec31309 | 2414 | struct attr attr; |
d3135ba3 | 2415 | struct attr *attr_new; |
c4edf708 | 2416 | int ret = 0; |
d3135ba3 | 2417 | struct prefix p; |
2418 | struct prefix *pp = &p; | |
2419 | afi_t afi = 0; | |
2420 | safi_t safi = 0; | |
5f0c5ec8 | 2421 | bool new_pi = false; |
58bff4d1 AK |
2422 | bool use_l3nhg = false; |
2423 | bool is_l3nhg_active = false; | |
a2299aba | 2424 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2425 | |
2426 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2427 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2428 | |
2dbe669b | 2429 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2430 | zlog_debug( |
2dbe669b DA |
2431 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2432 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2433 | parent_pi->flags); | |
1eb88002 | 2434 | |
d3135ba3 | 2435 | /* Create (or fetch) route within the VRF. */ |
2436 | /* NOTE: There is no RD here. */ | |
3714a385 | 2437 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2438 | afi = AFI_IP; |
2439 | safi = SAFI_UNICAST; | |
9bcb3eef | 2440 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2441 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2442 | afi = AFI_IP6; |
2443 | safi = SAFI_UNICAST; | |
9bcb3eef | 2444 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2445 | } else |
2446 | return 0; | |
2447 | ||
1ec31309 | 2448 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2449 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2450 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2451 | * address for the rest of the code to flow through. In the case of IPv4, | |
2452 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2453 | */ |
6f4f49b2 | 2454 | attr = *parent_pi->attr; |
a2299aba AD |
2455 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2456 | if (afi == AFI_IP6) | |
2457 | evpn_convert_nexthop_to_ipv6(&attr); | |
2458 | else | |
2459 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
2460 | } else { | |
2461 | ||
2462 | /* | |
2463 | * If gateway IP overlay index is specified in the NLRI of | |
2464 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2465 | * for the prefix in the VRF | |
2466 | */ | |
2467 | if (bgp_debug_zebra(NULL)) { | |
2468 | zlog_debug( | |
2469 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2470 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2471 | buf1, sizeof(buf1)), pp, | |
2472 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2473 | } | |
2474 | ||
2475 | if (afi == AFI_IP6) { | |
2476 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2477 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2478 | sizeof(struct in6_addr)); |
2479 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2480 | } else { | |
860e740b | 2481 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2482 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2483 | } | |
2484 | } | |
1ec31309 | 2485 | |
58bff4d1 AK |
2486 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2487 | &is_l3nhg_active, NULL); | |
2488 | if (use_l3nhg) | |
2489 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2490 | if (is_l3nhg_active) | |
2491 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2492 | ||
d3135ba3 | 2493 | /* Check if route entry is already present. */ |
9bcb3eef | 2494 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2495 | if (pi->extra |
2496 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2497 | break; |
2498 | ||
5f0c5ec8 | 2499 | if (!pi) { |
9bcb3eef | 2500 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2501 | new_pi = true; |
2502 | } else { | |
40381db7 DS |
2503 | if (attrhash_cmp(pi->attr, &attr) |
2504 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2505 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2506 | return 0; |
2507 | } | |
2508 | /* The attribute has changed. */ | |
2509 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2510 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2511 | |
2512 | /* Restore route, if needed. */ | |
40381db7 | 2513 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2514 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2515 | |
2516 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2517 | if ((afi == AFI_IP |
2518 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2519 | || (afi == AFI_IP6 | |
2520 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2521 | &attr_new->mp_nexthop_global))) | |
2522 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2523 | |
9bcb3eef | 2524 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2525 | /* Unintern existing, set to new. */ |
40381db7 DS |
2526 | bgp_attr_unintern(&pi->attr); |
2527 | pi->attr = attr_new; | |
2528 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2529 | } |
a2299aba AD |
2530 | |
2531 | /* Gateway IP nexthop should be resolved */ | |
2532 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2533 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2534 | NULL, 0, NULL)) |
a2299aba AD |
2535 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2536 | else { | |
2537 | if (BGP_DEBUG(nht, NHT)) { | |
2538 | inet_ntop(pp->family, | |
2539 | &attr.evpn_overlay.gw_ip, | |
2540 | buf1, sizeof(buf1)); | |
2541 | zlog_debug("%s: gateway IP NH unresolved", | |
2542 | buf1); | |
2543 | } | |
2544 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2545 | } | |
2546 | } else { | |
2547 | ||
2548 | /* as it is an importation, change nexthop */ | |
2549 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2550 | } | |
d3135ba3 | 2551 | |
090efa2f AK |
2552 | /* Link path to evpn nexthop */ |
2553 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2554 | ||
9bcb3eef | 2555 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2556 | safi); |
b49cdf4c | 2557 | |
d3135ba3 | 2558 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2559 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2560 | |
7452e879 | 2561 | /* Process for route leaking. */ |
2562 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2563 | ||
9bcb3eef | 2564 | bgp_dest_unlock_node(dest); |
3c11d70a | 2565 | |
5f0c5ec8 | 2566 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2567 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2568 | new_pi ? "new" : "update", dest, | |
2569 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2570 | pi->flags); | |
5f0c5ec8 | 2571 | |
d3135ba3 | 2572 | return ret; |
2573 | } | |
2574 | ||
128ea8ab | 2575 | /* |
2576 | * Install route entry into the VNI routing table and invoke route selection. | |
2577 | */ | |
d62a17ae | 2578 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2579 | const struct prefix_evpn *p, |
40381db7 | 2580 | struct bgp_path_info *parent_pi) |
d62a17ae | 2581 | { |
9bcb3eef | 2582 | struct bgp_dest *dest; |
40381db7 | 2583 | struct bgp_path_info *pi; |
9c7edc03 | 2584 | struct bgp_path_info *local_pi; |
d62a17ae | 2585 | struct attr *attr_new; |
2586 | int ret; | |
c44ab6f1 | 2587 | struct prefix_evpn ad_evp; |
74efb822 AK |
2588 | bool old_local_es = false; |
2589 | bool new_local_es; | |
c44ab6f1 AK |
2590 | |
2591 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2592 | * we need to create a different copy for the VNI | |
2593 | */ | |
2594 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2595 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2596 | parent_pi->attr->nexthop); | |
d62a17ae | 2597 | |
2598 | /* Create (or fetch) route within the VNI. */ | |
2599 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2600 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2601 | |
2602 | /* Check if route entry is already present. */ | |
9bcb3eef | 2603 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2604 | if (pi->extra |
2605 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2606 | break; |
2607 | ||
bd0254af MS |
2608 | if (!pi) { |
2609 | /* Create an info */ | |
26c03e43 | 2610 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2611 | parent_pi->attr); |
74efb822 | 2612 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2613 | } else { |
40381db7 DS |
2614 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2615 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2616 | bgp_dest_unlock_node(dest); |
d62a17ae | 2617 | return 0; |
2618 | } | |
2619 | /* The attribute has changed. */ | |
2620 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2621 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2622 | |
50f74cf1 | 2623 | /* Restore route, if needed. */ |
40381db7 | 2624 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2625 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2626 | |
2627 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2628 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2629 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2630 | |
74efb822 AK |
2631 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
2632 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
2633 | /* If ESI is different or if its type has changed we | |
2634 | * need to reinstall the path in zebra | |
2635 | */ | |
2636 | if ((old_local_es != new_local_es) | |
2637 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
2638 | sizeof(attr_new->esi))) { | |
2639 | ||
2640 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2641 | zlog_debug("VNI %d path %pFX chg to %s es", | |
2642 | vpn->vni, &pi->net->p, | |
2643 | new_local_es ? "local" | |
2644 | : "non-local"); | |
2645 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
2646 | } | |
2647 | ||
50f74cf1 | 2648 | /* Unintern existing, set to new. */ |
40381db7 DS |
2649 | bgp_attr_unintern(&pi->attr); |
2650 | pi->attr = attr_new; | |
2651 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2652 | } |
2653 | ||
021b6596 AD |
2654 | /* Add this route to remote IP hashtable */ |
2655 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
2656 | ||
50f74cf1 | 2657 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2658 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2659 | |
9c7edc03 AK |
2660 | /* if the best path is a local path with a non-zero ES |
2661 | * sync info against the local path may need to be updated | |
2662 | * when a remote path is added/updated (including changes | |
2663 | * from sync-path to remote-path) | |
2664 | */ | |
2665 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 2666 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 2667 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 2668 | __func__); |
9bcb3eef | 2669 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2670 | |
50f74cf1 | 2671 | return ret; |
2672 | } | |
2673 | ||
d3135ba3 | 2674 | /* |
2675 | * Uninstall route entry from the VRF routing table and send message | |
2676 | * to zebra, if appropriate. | |
2677 | */ | |
2678 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2679 | const struct prefix_evpn *evp, |
40381db7 | 2680 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2681 | { |
9bcb3eef | 2682 | struct bgp_dest *dest; |
40381db7 | 2683 | struct bgp_path_info *pi; |
c4edf708 | 2684 | int ret = 0; |
d3135ba3 | 2685 | struct prefix p; |
2686 | struct prefix *pp = &p; | |
2687 | afi_t afi = 0; | |
2688 | safi_t safi = 0; | |
2689 | ||
2690 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2691 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2692 | |
2dbe669b | 2693 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2694 | zlog_debug( |
2dbe669b DA |
2695 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2696 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2697 | parent_pi->flags); | |
1eb88002 | 2698 | |
d3135ba3 | 2699 | /* Locate route within the VRF. */ |
2700 | /* NOTE: There is no RD here. */ | |
3714a385 | 2701 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2702 | afi = AFI_IP; |
2703 | safi = SAFI_UNICAST; | |
9bcb3eef | 2704 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2705 | } else { |
2706 | afi = AFI_IP6; | |
2707 | safi = SAFI_UNICAST; | |
9bcb3eef | 2708 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2709 | } |
2710 | ||
9bcb3eef | 2711 | if (!dest) |
d3135ba3 | 2712 | return 0; |
2713 | ||
2714 | /* Find matching route entry. */ | |
9bcb3eef | 2715 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2716 | if (pi->extra |
2717 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2718 | break; |
2719 | ||
e71ad4b6 DA |
2720 | if (!pi) { |
2721 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 2722 | return 0; |
e71ad4b6 | 2723 | } |
d3135ba3 | 2724 | |
5f0c5ec8 | 2725 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2726 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2727 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2728 | pi->flags); | |
5f0c5ec8 | 2729 | |
7452e879 | 2730 | /* Process for route leaking. */ |
2731 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2732 | ||
9bcb3eef | 2733 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2734 | safi); |
4c7a11d5 | 2735 | |
d3135ba3 | 2736 | /* Mark entry for deletion */ |
9bcb3eef | 2737 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2738 | |
090efa2f AK |
2739 | /* Unlink path to evpn nexthop */ |
2740 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
2741 | ||
d3135ba3 | 2742 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2743 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2744 | |
2745 | /* Unlock route node. */ | |
9bcb3eef | 2746 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2747 | |
2748 | return ret; | |
2749 | } | |
2750 | ||
128ea8ab | 2751 | /* |
2752 | * Uninstall route entry from the VNI routing table and send message | |
2753 | * to zebra, if appropriate. | |
2754 | */ | |
d62a17ae | 2755 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2756 | const struct prefix_evpn *p, |
40381db7 | 2757 | struct bgp_path_info *parent_pi) |
128ea8ab | 2758 | { |
9bcb3eef | 2759 | struct bgp_dest *dest; |
40381db7 | 2760 | struct bgp_path_info *pi; |
9c7edc03 | 2761 | struct bgp_path_info *local_pi; |
d62a17ae | 2762 | int ret; |
c44ab6f1 AK |
2763 | struct prefix_evpn ad_evp; |
2764 | ||
2765 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2766 | * we need to create a different copy for the VNI | |
2767 | */ | |
2768 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2769 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2770 | parent_pi->attr->nexthop); | |
128ea8ab | 2771 | |
d62a17ae | 2772 | /* Locate route within the VNI. */ |
2773 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2774 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2775 | if (!dest) | |
d62a17ae | 2776 | return 0; |
128ea8ab | 2777 | |
d62a17ae | 2778 | /* Find matching route entry. */ |
9bcb3eef | 2779 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2780 | if (pi->extra |
2781 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2782 | break; |
128ea8ab | 2783 | |
e71ad4b6 DA |
2784 | if (!pi) { |
2785 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2786 | return 0; |
e71ad4b6 | 2787 | } |
128ea8ab | 2788 | |
021b6596 AD |
2789 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
2790 | ||
d62a17ae | 2791 | /* Mark entry for deletion */ |
9bcb3eef | 2792 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2793 | |
d62a17ae | 2794 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2795 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2796 | |
9c7edc03 AK |
2797 | /* if the best path is a local path with a non-zero ES |
2798 | * sync info against the local path may need to be updated | |
2799 | * when a remote path is deleted | |
2800 | */ | |
2801 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2802 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2803 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2804 | __func__); | |
2805 | ||
d62a17ae | 2806 | /* Unlock route node. */ |
9bcb3eef | 2807 | bgp_dest_unlock_node(dest); |
128ea8ab | 2808 | |
d62a17ae | 2809 | return ret; |
128ea8ab | 2810 | } |
2811 | ||
5ba238b7 MK |
2812 | /* |
2813 | * Given a route entry and a VRF, see if this route entry should be | |
2814 | * imported into the VRF i.e., RTs match. | |
2815 | */ | |
4b7e6066 | 2816 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2817 | struct bgp_path_info *pi) |
5ba238b7 | 2818 | { |
40381db7 | 2819 | struct attr *attr = pi->attr; |
5ba238b7 | 2820 | struct ecommunity *ecom; |
f6e07e1b | 2821 | uint32_t i; |
5ba238b7 MK |
2822 | |
2823 | assert(attr); | |
2824 | /* Route should have valid RT to be even considered. */ | |
2825 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2826 | return 0; | |
2827 | ||
b53e67a3 | 2828 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
2829 | if (!ecom || !ecom->size) |
2830 | return 0; | |
2831 | ||
2832 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2833 | * matches, we're done. | |
2834 | */ | |
2835 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2836 | uint8_t *pnt; |
2837 | uint8_t type, sub_type; | |
5ba238b7 MK |
2838 | struct ecommunity_val *eval; |
2839 | struct ecommunity_val eval_tmp; | |
2840 | struct vrf_irt_node *irt; | |
2841 | ||
2842 | /* Only deal with RTs */ | |
34540b0d | 2843 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2844 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2845 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2846 | type = *pnt++; |
2847 | sub_type = *pnt++; | |
2848 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2849 | continue; | |
2850 | ||
2851 | /* See if this RT matches specified VNIs import RTs */ | |
2852 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2853 | if (irt) |
5ba238b7 MK |
2854 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2855 | return 1; | |
2856 | ||
2857 | /* Also check for non-exact match. In this, we mask out the AS | |
2858 | * and | |
2859 | * only check on the local-admin sub-field. This is to | |
2860 | * facilitate using | |
2861 | * VNI as the RT for EBGP peering too. | |
2862 | */ | |
2863 | irt = NULL; | |
2864 | if (type == ECOMMUNITY_ENCODE_AS | |
2865 | || type == ECOMMUNITY_ENCODE_AS4 | |
2866 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2867 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2868 | mask_ecom_global_admin(&eval_tmp, eval); |
2869 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2870 | } | |
5d9cbca2 | 2871 | if (irt) |
5ba238b7 MK |
2872 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2873 | return 1; | |
2874 | } | |
2875 | ||
2876 | return 0; | |
2877 | } | |
2878 | ||
128ea8ab | 2879 | /* |
2880 | * Given a route entry and a VNI, see if this route entry should be | |
2881 | * imported into the VNI i.e., RTs match. | |
2882 | */ | |
d62a17ae | 2883 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2884 | struct bgp_path_info *pi) |
d62a17ae | 2885 | { |
40381db7 | 2886 | struct attr *attr = pi->attr; |
d62a17ae | 2887 | struct ecommunity *ecom; |
f6e07e1b | 2888 | uint32_t i; |
d62a17ae | 2889 | |
2890 | assert(attr); | |
2891 | /* Route should have valid RT to be even considered. */ | |
2892 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2893 | return 0; | |
2894 | ||
b53e67a3 | 2895 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 2896 | if (!ecom || !ecom->size) |
2897 | return 0; | |
2898 | ||
2899 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2900 | * matches, we're done. | |
2901 | */ | |
2902 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2903 | uint8_t *pnt; |
2904 | uint8_t type, sub_type; | |
d62a17ae | 2905 | struct ecommunity_val *eval; |
2906 | struct ecommunity_val eval_tmp; | |
2907 | struct irt_node *irt; | |
2908 | ||
2909 | /* Only deal with RTs */ | |
34540b0d | 2910 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2911 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2912 | + (i * ecom->unit_size)); |
d62a17ae | 2913 | type = *pnt++; |
2914 | sub_type = *pnt++; | |
2915 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2916 | continue; | |
2917 | ||
2918 | /* See if this RT matches specified VNIs import RTs */ | |
2919 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2920 | if (irt) |
d62a17ae | 2921 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2922 | return 1; | |
2923 | ||
2924 | /* Also check for non-exact match. In this, we mask out the AS | |
2925 | * and | |
2926 | * only check on the local-admin sub-field. This is to | |
2927 | * facilitate using | |
2928 | * VNI as the RT for EBGP peering too. | |
2929 | */ | |
2930 | irt = NULL; | |
2931 | if (type == ECOMMUNITY_ENCODE_AS | |
2932 | || type == ECOMMUNITY_ENCODE_AS4 | |
2933 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2934 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2935 | mask_ecom_global_admin(&eval_tmp, eval); |
2936 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2937 | } | |
b1ab0dfe | 2938 | if (irt) |
d62a17ae | 2939 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2940 | return 1; | |
2941 | } | |
2942 | ||
2943 | return 0; | |
128ea8ab | 2944 | } |
2945 | ||
47bf0432 CS |
2946 | /* This API will scan evpn routes for checking attribute's rmac |
2947 | * macthes with bgp instance router mac. It avoid installing | |
2948 | * route into bgp vrf table and remote rmac in bridge table. | |
2949 | */ | |
2950 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2951 | const struct prefix_evpn *evp, |
47bf0432 CS |
2952 | struct bgp_path_info *pi) |
2953 | { | |
2954 | /* evpn route could have learnt prior to L3vni has come up, | |
2955 | * perform rmac check before installing route and | |
2956 | * remote router mac. | |
2957 | * The route will be removed from global bgp table once | |
2958 | * SVI comes up with MAC and stored in hash, triggers | |
2959 | * bgp_mac_rescan_all_evpn_tables. | |
2960 | */ | |
05864da7 | 2961 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2962 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2963 | char attr_str[BUFSIZ] = {0}; |
2964 | ||
5022c833 | 2965 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2966 | |
2dbe669b DA |
2967 | zlog_debug( |
2968 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2969 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2970 | } |
2971 | ||
2972 | return 1; | |
2973 | } | |
2974 | ||
2975 | return 0; | |
2976 | } | |
2977 | ||
bbc57c6c AK |
2978 | /* don't import hosts that are locally attached */ |
2979 | static inline bool | |
36dd4574 AK |
2980 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
2981 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
2982 | struct bgp_path_info *pi, int install) |
2983 | { | |
26c03e43 | 2984 | esi_t *esi; |
bbc57c6c | 2985 | |
26c03e43 AK |
2986 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2987 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2988 | ||
2989 | /* Don't import routes that point to a local destination */ | |
2990 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2991 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
2992 | char esi_buf[ESI_STR_LEN]; | |
2993 | ||
2994 | zlog_debug( | |
2995 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
2996 | install ? "import" : "unimport", evp, | |
2997 | esi_to_str(esi, esi_buf, | |
2998 | sizeof(esi_buf))); | |
2999 | } | |
3000 | return true; | |
3001 | } | |
58bff4d1 AK |
3002 | } |
3003 | return false; | |
3004 | } | |
26c03e43 | 3005 | |
58bff4d1 AK |
3006 | /* |
3007 | * Install or uninstall a mac-ip route in the provided vrf if | |
3008 | * there is a rt match | |
3009 | */ | |
3010 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3011 | struct bgp_path_info *pi, | |
3012 | int install) | |
3013 | { | |
3014 | int ret = 0; | |
3015 | const struct prefix_evpn *evp = | |
3016 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3017 | ||
3018 | /* Consider "valid" remote routes applicable for | |
3019 | * this VRF. | |
3020 | */ | |
3021 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3022 | && pi->type == ZEBRA_ROUTE_BGP | |
3023 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3024 | return 0; | |
3025 | ||
58bff4d1 AK |
3026 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3027 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3028 | return 0; | |
3029 | ||
74efb822 | 3030 | /* don't import hosts that are locally attached */ |
e57e63eb | 3031 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3032 | bgp_vrf, evp, pi, install)) | |
3033 | return 0; | |
3034 | ||
3035 | if (install) | |
58bff4d1 | 3036 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3037 | else |
58bff4d1 AK |
3038 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3039 | pi); | |
26c03e43 | 3040 | |
58bff4d1 AK |
3041 | if (ret) |
3042 | flog_err(EC_BGP_EVPN_FAIL, | |
3043 | "Failed to %s EVPN %pFX route in VRF %s", | |
3044 | install ? "install" : "uninstall", evp, | |
3045 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3046 | } |
58bff4d1 AK |
3047 | |
3048 | return ret; | |
bbc57c6c AK |
3049 | } |
3050 | ||
5ba238b7 MK |
3051 | /* |
3052 | * Install or uninstall mac-ip routes are appropriate for this | |
3053 | * particular VRF. | |
3054 | */ | |
996c9314 | 3055 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3056 | { |
3057 | afi_t afi; | |
3058 | safi_t safi; | |
9bcb3eef | 3059 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3060 | struct bgp_table *table; |
40381db7 | 3061 | struct bgp_path_info *pi; |
5ba238b7 | 3062 | int ret; |
5e53dce3 | 3063 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3064 | |
3065 | afi = AFI_L2VPN; | |
3066 | safi = SAFI_EVPN; | |
5e53dce3 T |
3067 | bgp_evpn = bgp_get_evpn(); |
3068 | if (!bgp_evpn) | |
5ba238b7 MK |
3069 | return -1; |
3070 | ||
3071 | /* Walk entire global routing table and evaluate routes which could be | |
3072 | * imported into this VRF. Note that we need to loop through all global | |
3073 | * routes to determine which route matches the import rt on vrf | |
3074 | */ | |
9bcb3eef DS |
3075 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3076 | rd_dest = bgp_route_next(rd_dest)) { | |
3077 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3078 | if (!table) |
3079 | continue; | |
3080 | ||
9bcb3eef DS |
3081 | for (dest = bgp_table_top(table); dest; |
3082 | dest = bgp_route_next(dest)) { | |
3083 | const struct prefix_evpn *evp = | |
3084 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3085 | dest); | |
5ba238b7 | 3086 | |
1eb88002 | 3087 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3088 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3089 | || evp->prefix.route_type | |
3090 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3091 | continue; |
3092 | ||
1eb88002 | 3093 | /* if not a mac+ip route skip this route */ |
3714a385 | 3094 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3095 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3096 | continue; |
3097 | ||
9bcb3eef | 3098 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3099 | pi = pi->next) { |
58bff4d1 AK |
3100 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3101 | bgp_vrf, pi, install); | |
3102 | if (ret) | |
3103 | return ret; | |
5ba238b7 MK |
3104 | } |
3105 | } | |
3106 | } | |
3107 | ||
3108 | return 0; | |
3109 | } | |
3110 | ||
128ea8ab | 3111 | /* |
3112 | * Install or uninstall routes of specified type that are appropriate for this | |
3113 | * particular VNI. | |
3114 | */ | |
d62a17ae | 3115 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3116 | struct bgpevpn *vpn, | |
3117 | bgp_evpn_route_type rtype, | |
3118 | int install) | |
3119 | { | |
0291c246 MK |
3120 | afi_t afi; |
3121 | safi_t safi; | |
9bcb3eef | 3122 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3123 | struct bgp_table *table; |
40381db7 | 3124 | struct bgp_path_info *pi; |
0291c246 | 3125 | int ret; |
d62a17ae | 3126 | |
3127 | afi = AFI_L2VPN; | |
3128 | safi = SAFI_EVPN; | |
3129 | ||
3130 | /* Walk entire global routing table and evaluate routes which could be | |
3131 | * imported into this VPN. Note that we cannot just look at the routes | |
3132 | * for | |
3133 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3134 | * RD. | |
3135 | */ | |
3136 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3137 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3138 | rd_dest = bgp_route_next(rd_dest)) { | |
3139 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3140 | if (!table) |
3141 | continue; | |
3142 | ||
9bcb3eef DS |
3143 | for (dest = bgp_table_top(table); dest; |
3144 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3145 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3146 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3147 | dest); | |
d62a17ae | 3148 | |
3149 | if (evp->prefix.route_type != rtype) | |
3150 | continue; | |
3151 | ||
9bcb3eef | 3152 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3153 | pi = pi->next) { |
d62a17ae | 3154 | /* Consider "valid" remote routes applicable for |
3155 | * this VNI. */ | |
40381db7 DS |
3156 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3157 | && pi->type == ZEBRA_ROUTE_BGP | |
3158 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3159 | continue; |
3160 | ||
40381db7 | 3161 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3162 | if (install) |
3163 | ret = install_evpn_route_entry( | |
40381db7 | 3164 | bgp, vpn, evp, pi); |
d62a17ae | 3165 | else |
3166 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3167 | bgp, vpn, evp, pi); |
d62a17ae | 3168 | |
3169 | if (ret) { | |
af4c2728 | 3170 | flog_err( |
e50f7cfd | 3171 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3172 | "%u: Failed to %s EVPN %s route in VNI %u", |
3173 | bgp->vrf_id, | |
3174 | install ? "install" | |
3175 | : "uninstall", | |
3176 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3177 | ? "MACIP" | |
3178 | : "IMET", | |
3179 | vpn->vni); | |
dc52bece DS |
3180 | |
3181 | bgp_dest_unlock_node(rd_dest); | |
3182 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3183 | return ret; |
3184 | } | |
3185 | } | |
3186 | } | |
3187 | } | |
3188 | } | |
3189 | ||
3190 | return 0; | |
128ea8ab | 3191 | } |
3192 | ||
5ba238b7 | 3193 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3194 | * is invoked upon l3vni-add or l3vni import rt change |
3195 | */ | |
5ba238b7 MK |
3196 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3197 | { | |
3198 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3199 | return 0; | |
3200 | } | |
3201 | ||
128ea8ab | 3202 | /* |
3203 | * Install any existing remote routes applicable for this VNI into its | |
3204 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3205 | * RT is changed. | |
3206 | */ | |
d62a17ae | 3207 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3208 | { |
d62a17ae | 3209 | int ret; |
128ea8ab | 3210 | |
d62a17ae | 3211 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3212 | * for this VNI. | |
3213 | */ | |
3214 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3215 | 1); | |
3216 | if (ret) | |
3217 | return ret; | |
128ea8ab | 3218 | |
c44ab6f1 AK |
3219 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3220 | 1); | |
3221 | if (ret) | |
3222 | return ret; | |
3223 | ||
d62a17ae | 3224 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3225 | 1); | |
128ea8ab | 3226 | } |
3227 | ||
5ba238b7 MK |
3228 | /* uninstall routes from l3vni vrf. */ |
3229 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3230 | { | |
3231 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3232 | return 0; | |
3233 | } | |
3234 | ||
90e60aa7 | 3235 | /* |
3236 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3237 | * this is invoked is upon an import RT change. | |
3238 | */ | |
d62a17ae | 3239 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3240 | { |
d62a17ae | 3241 | int ret; |
90e60aa7 | 3242 | |
d62a17ae | 3243 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3244 | * applicable | |
3245 | * for this VNI. | |
3246 | */ | |
3247 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3248 | 0); | |
3249 | if (ret) | |
3250 | return ret; | |
90e60aa7 | 3251 | |
c44ab6f1 | 3252 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3253 | 0); |
c44ab6f1 AK |
3254 | if (ret) |
3255 | return ret; | |
3256 | ||
3257 | ||
d62a17ae | 3258 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3259 | 0); | |
90e60aa7 | 3260 | } |
3261 | ||
d3135ba3 | 3262 | /* |
3263 | * Install or uninstall route in matching VRFs (list). | |
3264 | */ | |
3265 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3266 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3267 | struct bgp_path_info *pi, |
d3135ba3 | 3268 | struct list *vrfs, int install) |
3269 | { | |
d3135ba3 | 3270 | struct bgp *bgp_vrf; |
3271 | struct listnode *node, *nnode; | |
3272 | ||
90264d64 | 3273 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3274 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3275 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3276 | return 0; |
3277 | ||
90264d64 | 3278 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3279 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3280 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3281 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3282 | return 0; |
3283 | ||
d3135ba3 | 3284 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3285 | int ret; | |
3286 | ||
36dd4574 | 3287 | /* don't import hosts that are locally attached */ |
e57e63eb | 3288 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3289 | bgp_vrf, evp, pi, install)) | |
3290 | return 0; | |
3291 | ||
3292 | if (install) | |
40381db7 | 3293 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3294 | else |
996c9314 | 3295 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3296 | pi); |
d3135ba3 | 3297 | |
3298 | if (ret) { | |
e50f7cfd | 3299 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3300 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3301 | bgp_def->vrf_id, |
2dbe669b | 3302 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3303 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3304 | return ret; |
3305 | } | |
3306 | } | |
3307 | ||
3308 | return 0; | |
3309 | } | |
3310 | ||
128ea8ab | 3311 | /* |
3312 | * Install or uninstall route in matching VNIs (list). | |
3313 | */ | |
d62a17ae | 3314 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3315 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3316 | struct bgp_path_info *pi, |
d62a17ae | 3317 | struct list *vnis, int install) |
128ea8ab | 3318 | { |
d62a17ae | 3319 | struct bgpevpn *vpn; |
3320 | struct listnode *node, *nnode; | |
128ea8ab | 3321 | |
d62a17ae | 3322 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3323 | int ret; | |
128ea8ab | 3324 | |
d62a17ae | 3325 | if (!is_vni_live(vpn)) |
3326 | continue; | |
128ea8ab | 3327 | |
d62a17ae | 3328 | if (install) |
40381db7 | 3329 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3330 | else |
40381db7 | 3331 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3332 | |
d62a17ae | 3333 | if (ret) { |
1c50c1c0 QY |
3334 | flog_err(EC_BGP_EVPN_FAIL, |
3335 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3336 | bgp->vrf_id, install ? "install" : "uninstall", | |
3337 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3338 | ? "MACIP" | |
3339 | : "IMET", | |
3340 | vpn->vni); | |
d62a17ae | 3341 | return ret; |
3342 | } | |
3343 | } | |
128ea8ab | 3344 | |
d62a17ae | 3345 | return 0; |
128ea8ab | 3346 | } |
3347 | ||
3348 | /* | |
50f74cf1 | 3349 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3350 | */ |
26c03e43 AK |
3351 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3352 | safi_t safi, const struct prefix *p, | |
3353 | struct bgp_path_info *pi, | |
3354 | int import, bool in_vni_rt, | |
3355 | bool in_vrf_rt) | |
d62a17ae | 3356 | { |
3357 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3358 | struct attr *attr = pi->attr; |
d62a17ae | 3359 | struct ecommunity *ecom; |
f6e07e1b | 3360 | uint32_t i; |
c44ab6f1 | 3361 | struct prefix_evpn ad_evp; |
d62a17ae | 3362 | |
3363 | assert(attr); | |
3364 | ||
fff7545a | 3365 | /* Only type-1, type-2, type-3, type-4 and type-5 |
3366 | * are supported currently | |
3367 | */ | |
d62a17ae | 3368 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3369 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3370 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3371 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3372 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3373 | return 0; |
3374 | ||
3375 | /* If we don't have Route Target, nothing much to do. */ | |
3376 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3377 | return 0; | |
3378 | ||
c44ab6f1 AK |
3379 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3380 | * we need to create a different copy for the VNI | |
3381 | */ | |
3382 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3383 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3384 | ||
b53e67a3 | 3385 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3386 | if (!ecom || !ecom->size) |
3387 | return -1; | |
3388 | ||
50f74cf1 | 3389 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3390 | * attached to the route */ | |
d62a17ae | 3391 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3392 | uint8_t *pnt; |
3393 | uint8_t type, sub_type; | |
d62a17ae | 3394 | struct ecommunity_val *eval; |
3395 | struct ecommunity_val eval_tmp; | |
996c9314 | 3396 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3397 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3398 | struct bgp_evpn_es *es; |
d62a17ae | 3399 | |
3400 | /* Only deal with RTs */ | |
34540b0d | 3401 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3402 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3403 | + (i * ecom->unit_size)); |
d62a17ae | 3404 | type = *pnt++; |
3405 | sub_type = *pnt++; | |
3406 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3407 | continue; | |
3408 | ||
58bff4d1 AK |
3409 | /* non-local MAC-IP routes in the global route table are linked |
3410 | * to the destination ES | |
3411 | */ | |
3412 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3413 | bgp_evpn_path_es_link(pi, 0, | |
3414 | bgp_evpn_attr_get_esi(pi->attr)); | |
3415 | ||
50f74cf1 | 3416 | /* |
3417 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3418 | * IMET route is imported into VNI table. | |
3419 | * prefix routes are imported into VRF table. | |
523cafc4 | 3420 | */ |
50f74cf1 | 3421 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3422 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3423 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3424 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3425 | |
26c03e43 | 3426 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3427 | if (irt) |
40381db7 DS |
3428 | install_uninstall_route_in_vnis( |
3429 | bgp, afi, safi, evp, pi, irt->vnis, | |
3430 | import); | |
50f74cf1 | 3431 | |
26c03e43 | 3432 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3433 | if (vrf_irt) |
40381db7 DS |
3434 | install_uninstall_route_in_vrfs( |
3435 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3436 | import); | |
50f74cf1 | 3437 | |
3438 | /* Also check for non-exact match. | |
3439 | * In this, we mask out the AS and | |
3440 | * only check on the local-admin sub-field. | |
3441 | * This is to facilitate using | |
3442 | * VNI as the RT for EBGP peering too. | |
3443 | */ | |
3444 | irt = NULL; | |
3445 | vrf_irt = NULL; | |
3446 | if (type == ECOMMUNITY_ENCODE_AS | |
3447 | || type == ECOMMUNITY_ENCODE_AS4 | |
3448 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3449 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3450 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3451 | if (in_vni_rt) |
3452 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3453 | if (in_vrf_rt) | |
3454 | vrf_irt = | |
3455 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3456 | } |
3457 | ||
3458 | if (irt) | |
40381db7 DS |
3459 | install_uninstall_route_in_vnis( |
3460 | bgp, afi, safi, evp, pi, irt->vnis, | |
3461 | import); | |
50f74cf1 | 3462 | if (vrf_irt) |
40381db7 DS |
3463 | install_uninstall_route_in_vrfs( |
3464 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3465 | import); | |
50f74cf1 | 3466 | } |
3467 | ||
3468 | /* es route is imported into the es table */ | |
3469 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3470 | ||
3471 | /* we will match based on the entire esi to avoid | |
fff7545a | 3472 | * import of an es route for esi2 into esi1 |
50f74cf1 | 3473 | */ |
c44ab6f1 | 3474 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3475 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3476 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3477 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3478 | } |
d62a17ae | 3479 | } |
3480 | ||
3481 | return 0; | |
128ea8ab | 3482 | } |
3483 | ||
26c03e43 AK |
3484 | /* |
3485 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3486 | */ | |
3487 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3488 | const struct prefix *p, | |
3489 | struct bgp_path_info *pi, int import) | |
3490 | { | |
3491 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3492 | true, true); | |
3493 | } | |
3494 | ||
74efb822 AK |
3495 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
3496 | { | |
3497 | struct bgp *bgp_evpn; | |
3498 | ||
3499 | bgp_evpn = bgp_get_evpn(); | |
3500 | if (!bgp_evpn) | |
3501 | return; | |
3502 | ||
3503 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3504 | &pi->net->p, pi, import); | |
3505 | } | |
3506 | ||
2bb9eff4 DS |
3507 | /* |
3508 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3509 | * routes | |
3510 | */ | |
80b140af MK |
3511 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3512 | { | |
5fd9c12b KA |
3513 | /* Delete ipv4 default route and withdraw from peers */ |
3514 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3515 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3516 | SAFI_UNICAST, false); | |
3517 | ||
80b140af | 3518 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3519 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3520 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3521 | |
5fd9c12b KA |
3522 | /* Delete ipv6 default route and withdraw from peers */ |
3523 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3524 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3525 | SAFI_UNICAST, false); | |
3526 | ||
80b140af | 3527 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3528 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3529 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3530 | } |
3531 | ||
2bb9eff4 DS |
3532 | /* |
3533 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3534 | * routes | |
3535 | */ | |
5394a276 | 3536 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3537 | { |
5394a276 CS |
3538 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3539 | ||
3540 | bgp_evpn = bgp_get_evpn(); | |
3541 | if (!bgp_evpn) | |
3542 | return; | |
3543 | ||
80b140af | 3544 | /* update all ipv4 routes */ |
fdf19f06 MK |
3545 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3546 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3547 | |
5fd9c12b KA |
3548 | /* update ipv4 default route and withdraw from peers */ |
3549 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3550 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3551 | SAFI_UNICAST, true); | |
3552 | ||
80b140af | 3553 | /* update all ipv6 routes */ |
fdf19f06 MK |
3554 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3555 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3556 | |
3557 | /* update ipv6 default route and withdraw from peers */ | |
3558 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3559 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3560 | SAFI_UNICAST, true); | |
3561 | ||
80b140af MK |
3562 | } |
3563 | ||
676f83b9 | 3564 | /* |
3565 | * update and advertise local routes for a VRF as type-5 routes. | |
3566 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3567 | * done in the global route table using the routes which already exist in the | |
3568 | * VRF routing table | |
3569 | */ | |
80b140af | 3570 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3571 | { |
80b140af MK |
3572 | /* skip if the RD is configured */ |
3573 | if (is_vrf_rd_configured(bgp_vrf)) | |
3574 | return; | |
3575 | ||
3576 | /* derive the RD for the VRF based on new router-id */ | |
3577 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3578 | ||
3579 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3580 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3581 | } |
3582 | ||
3583 | /* | |
3584 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3585 | * This is invoked upon VRF RD change. The processing is done only from global | |
3586 | * table. | |
3587 | */ | |
80b140af | 3588 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3589 | { |
80b140af MK |
3590 | /* skip if the RD is configured */ |
3591 | if (is_vrf_rd_configured(bgp_vrf)) | |
3592 | return; | |
3593 | ||
3594 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3595 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3596 | } |
3597 | ||
90e60aa7 | 3598 | /* |
3599 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3600 | * change. Note that the processing is done only on the global route table | |
3601 | * using routes that already exist in the per-VNI table. | |
3602 | */ | |
d62a17ae | 3603 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3604 | { | |
3605 | struct prefix_evpn p; | |
9bcb3eef | 3606 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3607 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3608 | struct attr *attr; |
3609 | afi_t afi = AFI_L2VPN; | |
3610 | safi_t safi = SAFI_EVPN; | |
3611 | ||
3612 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3613 | * attributes to create and advertise the type-3 route for this VNI | |
3614 | * in the global table. | |
fd069644 DS |
3615 | * |
3616 | * RT-3 only if doing head-end replication | |
d62a17ae | 3617 | */ |
833b8a50 AK |
3618 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3619 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3620 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3621 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3622 | if (!dest) /* unexpected */ | |
fd069644 | 3623 | return 0; |
9bcb3eef | 3624 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3625 | if (pi->peer == bgp->peer_self && |
3626 | pi->type == ZEBRA_ROUTE_BGP | |
3627 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3628 | break; | |
3629 | if (!pi) /* unexpected */ | |
3630 | return 0; | |
3631 | attr = pi->attr; | |
d62a17ae | 3632 | |
9c7edc03 AK |
3633 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3634 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3635 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3636 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3637 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3638 | |
fd069644 | 3639 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3640 | bgp_process(bgp, global_dest, afi, safi); |
3641 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3642 | } |
d62a17ae | 3643 | |
3644 | /* Now, walk this VNI's route table and use the route and its attribute | |
3645 | * to create and schedule route in global table. | |
3646 | */ | |
9bcb3eef DS |
3647 | for (dest = bgp_table_top(vpn->route_table); dest; |
3648 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3649 | const struct prefix_evpn *evp = |
9bcb3eef | 3650 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3651 | |
d60f63f0 AD |
3652 | /* |
3653 | * We have already processed type-3 routes. | |
3654 | * Process only type-1 and type-2 routes here. | |
3655 | */ | |
3656 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
3657 | && evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
d62a17ae | 3658 | continue; |
3659 | ||
9bcb3eef | 3660 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3661 | if (pi->peer == bgp->peer_self |
3662 | && pi->type == ZEBRA_ROUTE_BGP | |
3663 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3664 | break; |
40381db7 | 3665 | if (!pi) |
d62a17ae | 3666 | continue; |
3667 | ||
3668 | /* Create route in global routing table using this route entry's | |
3669 | * attribute. | |
3670 | */ | |
40381db7 | 3671 | attr = pi->attr; |
c44ab6f1 | 3672 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3673 | evp, &vpn->prd); |
9bcb3eef | 3674 | assert(global_dest); |
d60f63f0 AD |
3675 | |
3676 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3677 | /* Type-2 route */ | |
3678 | update_evpn_route_entry( | |
3679 | bgp, vpn, afi, safi, global_dest, attr, 1, | |
3680 | &global_pi, 0, mac_mobility_seqnum(attr), | |
9c7edc03 | 3681 | false /* setup_sync */, NULL /* old_is_sync */); |
d60f63f0 AD |
3682 | } else { |
3683 | /* Type-1 route */ | |
3684 | struct bgp_evpn_es *es; | |
3685 | int route_changed = 0; | |
3686 | ||
3687 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
3688 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, | |
3689 | global_dest, attr, 1, | |
3690 | &global_pi, &route_changed); | |
3691 | } | |
d62a17ae | 3692 | |
3693 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3694 | bgp_process(bgp, global_dest, afi, safi); |
3695 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3696 | } |
3697 | ||
3698 | return 0; | |
90e60aa7 | 3699 | } |
3700 | ||
3701 | /* | |
3702 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3703 | * table. Invoked upon router-id change. | |
3704 | */ | |
d62a17ae | 3705 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3706 | { |
d62a17ae | 3707 | int ret; |
3708 | struct prefix_evpn p; | |
9bcb3eef | 3709 | struct bgp_dest *global_dest; |
40381db7 | 3710 | struct bgp_path_info *pi; |
d62a17ae | 3711 | afi_t afi = AFI_L2VPN; |
3712 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3713 | |
d62a17ae | 3714 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3715 | * for this VNI - from the global table. | |
3716 | */ | |
3717 | ret = delete_global_type2_routes(bgp, vpn); | |
3718 | if (ret) | |
3719 | return ret; | |
90e60aa7 | 3720 | |
d62a17ae | 3721 | /* Remove type-3 route for this VNI from global table. */ |
3722 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3723 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3724 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3725 | if (global_dest) { |
d62a17ae | 3726 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3727 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3728 | |
d62a17ae | 3729 | /* Schedule for processing - withdraws to peers happen from |
3730 | * this table. | |
3731 | */ | |
40381db7 | 3732 | if (pi) |
9bcb3eef DS |
3733 | bgp_process(bgp, global_dest, afi, safi); |
3734 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3735 | } |
90e60aa7 | 3736 | |
d60f63f0 AD |
3737 | |
3738 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 3739 | return 0; |
90e60aa7 | 3740 | } |
3741 | ||
2d48ee25 | 3742 | /* |
3743 | * Handle router-id change. Update and advertise local routes corresponding | |
3744 | * to this VNI from peers. Note that this is invoked after updating the | |
3745 | * router-id. The routes in the per-VNI table are used to create routes in | |
3746 | * the global table and schedule them. | |
3747 | */ | |
e3b78da8 | 3748 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3749 | { |
e3b78da8 | 3750 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3751 | |
d62a17ae | 3752 | /* Skip VNIs with configured RD. */ |
3753 | if (is_rd_configured(vpn)) | |
3754 | return; | |
2d48ee25 | 3755 | |
d62a17ae | 3756 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3757 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3758 | } |
3759 | ||
3760 | /* | |
3761 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3762 | * to this VNI from peers. Note that this is invoked prior to updating | |
3763 | * the router-id and is done only on the global route table, the routes | |
3764 | * are needed in the per-VNI table to re-advertise with new router id. | |
3765 | */ | |
e3b78da8 | 3766 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3767 | { |
e3b78da8 | 3768 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3769 | |
d62a17ae | 3770 | /* Skip VNIs with configured RD. */ |
3771 | if (is_rd_configured(vpn)) | |
3772 | return; | |
2d48ee25 | 3773 | |
d62a17ae | 3774 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3775 | } |
3776 | ||
fd069644 DS |
3777 | /* |
3778 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3779 | * This is invoked upon flooding mode changing to head-end replication. | |
3780 | */ | |
e3b78da8 | 3781 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3782 | { |
e3b78da8 | 3783 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3784 | struct bgp *bgp = data; |
3785 | struct prefix_evpn p; | |
3786 | ||
833b8a50 AK |
3787 | if (!vpn || !is_vni_live(vpn) || |
3788 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3789 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3790 | return; |
3791 | ||
3792 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3793 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3794 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3795 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3796 | } | |
3797 | ||
3798 | /* | |
3799 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3800 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3801 | */ | |
e3b78da8 | 3802 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3803 | { |
e3b78da8 | 3804 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3805 | struct bgp *bgp = data; |
3806 | struct prefix_evpn p; | |
3807 | ||
3808 | if (!vpn || !is_vni_live(vpn)) | |
3809 | return; | |
3810 | ||
3811 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3812 | delete_evpn_route(bgp, vpn, &p); | |
3813 | } | |
3814 | ||
128ea8ab | 3815 | /* |
3816 | * Process received EVPN type-2 route (advertise or withdraw). | |
3817 | */ | |
d62a17ae | 3818 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3819 | struct attr *attr, uint8_t *pfx, int psize, |
3820 | uint32_t addpath_id) | |
d62a17ae | 3821 | { |
3822 | struct prefix_rd prd; | |
e121d831 QY |
3823 | struct prefix_evpn p = {}; |
3824 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3825 | uint8_t ipaddr_len; |
3826 | uint8_t macaddr_len; | |
e121d831 QY |
3827 | /* holds the VNI(s) as in packet */ |
3828 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3829 | uint32_t num_labels = 0; |
554cd77a | 3830 | uint32_t eth_tag; |
d62a17ae | 3831 | int ret; |
3832 | ||
3833 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3834 | * additional 3 bytes if there is a second label (VNI): | |
3835 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3836 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3837 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3838 | */ | |
3839 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3840 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3841 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3842 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3843 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3844 | return -1; |
3845 | } | |
3846 | ||
e121d831 QY |
3847 | struct stream *pkt = stream_new(psize); |
3848 | stream_put(pkt, pfx, psize); | |
554cd77a | 3849 | |
d62a17ae | 3850 | /* Make prefix_rd */ |
3851 | prd.family = AF_UNSPEC; | |
3852 | prd.prefixlen = 64; | |
e121d831 QY |
3853 | |
3854 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3855 | |
3856 | /* Make EVPN prefix. */ | |
b03b8898 | 3857 | p.family = AF_EVPN; |
50f74cf1 | 3858 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3859 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3860 | ||
554cd77a | 3861 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3862 | if (attr) { |
e121d831 QY |
3863 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3864 | ||
74efb822 | 3865 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
3866 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
3867 | else | |
3868 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3869 | } else { |
3870 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3871 | } |
d62a17ae | 3872 | |
554cd77a | 3873 | /* Copy Ethernet Tag */ |
e121d831 | 3874 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3875 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3876 | |
3877 | /* Get the MAC Addr len */ | |
e121d831 | 3878 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3879 | |
3880 | /* Get the MAC Addr */ | |
28328ea9 | 3881 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3882 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3883 | } else { |
af4c2728 | 3884 | flog_err( |
e50f7cfd | 3885 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3886 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3887 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3888 | goto fail; |
d62a17ae | 3889 | } |
3890 | ||
3891 | ||
3892 | /* Get the IP. */ | |
e121d831 QY |
3893 | STREAM_GETC(pkt, ipaddr_len); |
3894 | ||
d62a17ae | 3895 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3896 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3897 | flog_err( |
e50f7cfd | 3898 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3899 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3900 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3901 | goto fail; |
d62a17ae | 3902 | } |
3903 | ||
3904 | if (ipaddr_len) { | |
3905 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3906 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3907 | ? IPADDR_V4 |
3908 | : IPADDR_V6; | |
e121d831 | 3909 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3910 | } |
d62a17ae | 3911 | |
b57ba6d2 | 3912 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3913 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3914 | num_labels++; |
e121d831 | 3915 | |
b57ba6d2 | 3916 | /* Do we have a second VNI? */ |
e121d831 | 3917 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3918 | num_labels++; |
e121d831 | 3919 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3920 | } |
d62a17ae | 3921 | |
3922 | /* Process the route. */ | |
3923 | if (attr) | |
3924 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3925 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3926 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3927 | else |
3928 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3929 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3930 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3931 | goto done; |
3932 | ||
3933 | fail: | |
3934 | stream_failure: | |
3935 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3936 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3937 | peer->bgp->vrf_id, peer->host); | |
3938 | ret = -1; | |
3939 | done: | |
3940 | stream_free(pkt); | |
d62a17ae | 3941 | return ret; |
128ea8ab | 3942 | } |
3943 | ||
3944 | /* | |
3945 | * Process received EVPN type-3 route (advertise or withdraw). | |
3946 | */ | |
d62a17ae | 3947 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3948 | struct attr *attr, uint8_t *pfx, int psize, |
3949 | uint32_t addpath_id) | |
d62a17ae | 3950 | { |
3951 | struct prefix_rd prd; | |
3952 | struct prefix_evpn p; | |
d7c0a89a | 3953 | uint8_t ipaddr_len; |
554cd77a | 3954 | uint32_t eth_tag; |
d62a17ae | 3955 | int ret; |
3956 | ||
3957 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3958 | * IP len (1) and IP (4 or 16). | |
3959 | */ | |
3960 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3961 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3962 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3963 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3964 | return -1; |
3965 | } | |
3966 | ||
7fd077aa | 3967 | /* If PMSI is present, log if it is anything other than IR. |
3968 | * Note: We just simply ignore the values as it is not clear if | |
3969 | * doing anything else is better. | |
3970 | */ | |
3971 | if (attr && | |
3972 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3973 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3974 | ||
3975 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3976 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3977 | flog_warn( | |
3978 | EC_BGP_EVPN_PMSI_PRESENT, | |
3979 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3980 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3981 | } |
3982 | } | |
3983 | ||
d62a17ae | 3984 | /* Make prefix_rd */ |
3985 | prd.family = AF_UNSPEC; | |
3986 | prd.prefixlen = 64; | |
3987 | memcpy(&prd.val, pfx, 8); | |
3988 | pfx += 8; | |
3989 | ||
3990 | /* Make EVPN prefix. */ | |
3991 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3992 | p.family = AF_EVPN; |
50f74cf1 | 3993 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3994 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3995 | ||
554cd77a VB |
3996 | /* Copy Ethernet Tag */ |
3997 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3998 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3999 | pfx += 4; |
4000 | ||
4001 | /* Get the IP. */ | |
4002 | ipaddr_len = *pfx++; | |
4003 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4004 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4005 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4006 | } else { |
af4c2728 | 4007 | flog_err( |
e50f7cfd | 4008 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4009 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4010 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4011 | return -1; | |
4012 | } | |
4013 | ||
4014 | /* Process the route. */ | |
4015 | if (attr) | |
4016 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4017 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4018 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4019 | else |
4020 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4021 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4022 | &prd, NULL, 0, NULL); |
d62a17ae | 4023 | return ret; |
128ea8ab | 4024 | } |
4025 | ||
4026 | /* | |
4027 | * Process received EVPN type-5 route (advertise or withdraw). | |
4028 | */ | |
d62a17ae | 4029 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4030 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4031 | uint32_t addpath_id) |
d62a17ae | 4032 | { |
4033 | struct prefix_rd prd; | |
4034 | struct prefix_evpn p; | |
4035 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4036 | uint8_t ippfx_len; |
4037 | uint32_t eth_tag; | |
b57ba6d2 | 4038 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4039 | int ret; |
66ff6089 | 4040 | bool is_valid_update = true; |
d62a17ae | 4041 | |
4042 | /* Type-5 route should be 34 or 58 bytes: | |
4043 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4044 | * GW (4 or 16) and VNI (3). | |
4045 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4046 | */ | |
4047 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4048 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4049 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4050 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4051 | return -1; |
4052 | } | |
4053 | ||
4054 | /* Make prefix_rd */ | |
4055 | prd.family = AF_UNSPEC; | |
4056 | prd.prefixlen = 64; | |
4057 | memcpy(&prd.val, pfx, 8); | |
4058 | pfx += 8; | |
4059 | ||
4060 | /* Make EVPN prefix. */ | |
4061 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4062 | p.family = AF_EVPN; |
50f74cf1 | 4063 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4064 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4065 | ||
4066 | /* Additional information outside of prefix - ESI and GW IP */ | |
4067 | memset(&evpn, 0, sizeof(evpn)); | |
4068 | ||
66ff6089 | 4069 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4070 | if (attr) |
66ff6089 | 4071 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4072 | pfx += ESI_BYTES; |
d62a17ae | 4073 | |
4074 | /* Fetch Ethernet Tag. */ | |
4075 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4076 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4077 | pfx += 4; |
4078 | ||
4079 | /* Fetch IP prefix length. */ | |
4080 | ippfx_len = *pfx++; | |
4081 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4082 | flog_err( |
e50f7cfd | 4083 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4084 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4085 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4086 | return -1; | |
4087 | } | |
3714a385 | 4088 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4089 | |
4090 | /* Determine IPv4 or IPv6 prefix */ | |
4091 | /* Since the address and GW are from the same family, this just becomes | |
4092 | * a simple check on the total size. | |
4093 | */ | |
4094 | if (psize == 34) { | |
3714a385 | 4095 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4096 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4097 | pfx += 4; |
860e740b IR |
4098 | SET_IPADDR_V4(&evpn.gw_ip); |
4099 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4100 | pfx += 4; |
d62a17ae | 4101 | } else { |
3714a385 | 4102 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4103 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4104 | IPV6_MAX_BYTELEN); | |
4105 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4106 | SET_IPADDR_V6(&evpn.gw_ip); |
4107 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4108 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4109 | } |
4110 | ||
b57ba6d2 MK |
4111 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4112 | memset(&label, 0, sizeof(label)); | |
4113 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4114 | |
4115 | /* | |
4116 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4117 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4118 | * field | |
6b11bd8d | 4119 | */ |
d62a17ae | 4120 | |
66ff6089 AD |
4121 | /* |
4122 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4123 | * at the same time is should be treated as withdraw | |
4124 | */ | |
860e740b IR |
4125 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4126 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4127 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4128 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4129 | peer->host); | |
4130 | is_valid_update = false; | |
4131 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4132 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4133 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4134 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4135 | if (attr) { |
860e740b IR |
4136 | if (is_zero_mac(&attr->rmac) && |
4137 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4138 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4139 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4140 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4141 | peer->host); | |
c6ec0c74 | 4142 | is_valid_update = false; |
66ff6089 | 4143 | } |
c6ec0c74 KA |
4144 | |
4145 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4146 | is_valid_update = false; | |
4147 | } | |
4148 | ||
d62a17ae | 4149 | /* Process the route. */ |
66ff6089 | 4150 | if (attr && is_valid_update) |
d62a17ae | 4151 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4152 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4153 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4154 | else { |
4155 | if (!is_valid_update) { | |
4156 | char attr_str[BUFSIZ] = {0}; | |
4157 | ||
4158 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4159 | zlog_warn( | |
4160 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4161 | peer->hostname, peer->bgp->vrf_id, &p, | |
4162 | attr_str); | |
4163 | } | |
d62a17ae | 4164 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4165 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4166 | &prd, &label, 1, &evpn); |
66ff6089 | 4167 | } |
d62a17ae | 4168 | |
4169 | return ret; | |
4170 | } | |
4171 | ||
5f040085 DS |
4172 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4173 | const struct prefix_rd *prd, | |
4174 | mpls_label_t *label, uint32_t num_labels, | |
4175 | struct attr *attr) | |
d62a17ae | 4176 | { |
4177 | int len; | |
4178 | char temp[16]; | |
5f040085 | 4179 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4180 | |
4181 | memset(&temp, 0, 16); | |
b03b8898 | 4182 | if (p->family != AF_EVPN) |
d62a17ae | 4183 | return; |
4184 | p_evpn_p = &(p->u.prefix_evpn); | |
4185 | ||
e9fc2840 | 4186 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4187 | IP and GW-IP have to be both ipv4 or ipv6 |
4188 | */ | |
3714a385 | 4189 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4190 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4191 | else |
e9fc2840 | 4192 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4193 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4194 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4195 | stream_put(s, prd->val, 8); | |
6c995628 | 4196 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4197 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4198 | else |
c44ab6f1 | 4199 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4200 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4201 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4202 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4203 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4204 | else |
3714a385 | 4205 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4206 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4207 | const struct bgp_route_evpn *evpn_overlay = |
4208 | bgp_attr_get_evpn_overlay(attr); | |
4209 | ||
3714a385 | 4210 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4211 | stream_put_ipv4(s, |
4212 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4213 | else |
860e740b | 4214 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4215 | } else { |
3714a385 | 4216 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4217 | stream_put_ipv4(s, 0); |
4218 | else | |
4219 | stream_put(s, &temp, 16); | |
4220 | } | |
4221 | ||
b57ba6d2 | 4222 | if (num_labels) |
d62a17ae | 4223 | stream_put(s, label, 3); |
4224 | else | |
4225 | stream_put3(s, 0); | |
128ea8ab | 4226 | } |
4227 | ||
4228 | /* | |
4229 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4230 | */ | |
e3b78da8 | 4231 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4232 | { |
e3b78da8 | 4233 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4234 | |
d62a17ae | 4235 | /* Remove EVPN routes and schedule for processing. */ |
4236 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4237 | |
d62a17ae | 4238 | /* Clear "live" flag and see if hash needs to be freed. */ |
4239 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4240 | if (!is_vni_configured(vpn)) | |
4241 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4242 | } |
4243 | ||
4244 | /* | |
4245 | * Free a VNI entry; iterator function called during cleanup. | |
4246 | */ | |
e3b78da8 | 4247 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4248 | { |
e3b78da8 | 4249 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4250 | |
d62a17ae | 4251 | delete_all_vni_routes(bgp, vpn); |
4252 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4253 | } |
4254 | ||
c581d8b0 MK |
4255 | /* |
4256 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4257 | */ | |
4258 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4259 | { | |
5e53dce3 | 4260 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4261 | |
c581d8b0 | 4262 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4263 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4264 | ||
4265 | /* Map RT to VRF */ | |
5e53dce3 T |
4266 | bgp_evpn = bgp_get_evpn(); |
4267 | if (!bgp_evpn) | |
10ebe1ab MK |
4268 | return; |
4269 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4270 | } |
4271 | ||
4272 | /* | |
4273 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4274 | */ | |
4275 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4276 | { | |
4277 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4278 | } | |
4279 | ||
4280 | /* | |
4281 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4282 | */ | |
4283 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4284 | { | |
4285 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4286 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4287 | } | |
4288 | ||
4289 | /* | |
4290 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4291 | */ | |
4292 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4293 | { | |
4294 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4295 | } | |
128ea8ab | 4296 | |
f1f8b53c MK |
4297 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4298 | { | |
5e53dce3 | 4299 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4300 | struct listnode *node = NULL; |
4301 | struct bgpevpn *vpn = NULL; | |
4302 | ||
5e53dce3 T |
4303 | bgp_evpn = bgp_get_evpn(); |
4304 | if (!bgp_evpn) | |
f1f8b53c MK |
4305 | return; |
4306 | ||
4992b4ae MK |
4307 | /* update all type-5 routes */ |
4308 | update_advertise_vrf_routes(bgp_vrf); | |
4309 | ||
4310 | /* update all type-2 routes */ | |
f1f8b53c | 4311 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4312 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4313 | } |
4314 | ||
bf1061d8 VB |
4315 | /* |
4316 | * Handle autort change for a given VNI. | |
4317 | */ | |
e3b78da8 | 4318 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4319 | { |
e3b78da8 | 4320 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4321 | |
bf1061d8 VB |
4322 | if (!is_import_rt_configured(vpn)) { |
4323 | if (is_vni_live(vpn)) | |
4324 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4325 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4326 | list_delete_all_node(vpn->import_rtl); |
4327 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4328 | if (is_vni_live(vpn)) | |
4329 | bgp_evpn_install_routes(bgp, vpn); | |
4330 | } | |
4331 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4332 | list_delete_all_node(vpn->export_rtl); |
4333 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4334 | if (is_vni_live(vpn)) | |
4335 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4336 | } | |
4337 | } | |
4338 | ||
4204021e PG |
4339 | /* |
4340 | * Handle autort change for L3VNI. | |
4341 | */ | |
4342 | static void update_autort_l3vni(struct bgp *bgp) | |
4343 | { | |
4344 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4345 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4346 | return; | |
4347 | ||
4348 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4349 | if (is_l3vni_live(bgp)) | |
4350 | uninstall_routes_for_vrf(bgp); | |
4351 | ||
4352 | /* Cleanup the RT to VRF mapping */ | |
4353 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4354 | ||
4355 | /* Remove auto generated RT */ | |
4356 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4357 | ||
4358 | list_delete_all_node(bgp->vrf_import_rtl); | |
4359 | ||
4360 | /* Map auto derive or configured RTs */ | |
4361 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4362 | } | |
4363 | ||
4364 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4365 | list_delete_all_node(bgp->vrf_export_rtl); | |
4366 | ||
4367 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4368 | ||
4369 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4370 | ||
4371 | if (is_l3vni_live(bgp)) | |
4372 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4373 | } | |
4374 | ||
4375 | if (!is_l3vni_live(bgp)) | |
4376 | return; | |
4377 | ||
4378 | /* advertise type-5 routes if needed */ | |
4379 | update_advertise_vrf_routes(bgp); | |
4380 | ||
4381 | /* install all remote routes belonging to this l3vni | |
4382 | * into corresponding vrf | |
4383 | */ | |
4384 | install_routes_for_vrf(bgp); | |
4385 | } | |
4386 | ||
128ea8ab | 4387 | /* |
4388 | * Public functions. | |
4389 | */ | |
4390 | ||
5424b7ba | 4391 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4392 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4393 | afi_t afi, safi_t safi) |
4394 | { | |
4395 | int ret = 0; | |
4396 | struct prefix_evpn evp; | |
5424b7ba | 4397 | |
31310b25 | 4398 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4399 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4400 | if (ret) |
af4c2728 | 4401 | flog_err( |
e50f7cfd | 4402 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4403 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4404 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4405 | } |
4406 | ||
342dd0c6 | 4407 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4408 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4409 | { |
4410 | struct bgp_table *table = NULL; | |
9bcb3eef | 4411 | struct bgp_dest *dest = NULL; |
40381db7 | 4412 | struct bgp_path_info *pi; |
342dd0c6 | 4413 | |
053905d2 | 4414 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4415 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4416 | /* Only care about "selected" routes. Also ensure that |
4417 | * these are routes that are injectable into EVPN. | |
4418 | */ | |
25f2ca53 | 4419 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4420 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4421 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4422 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4423 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4424 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4425 | safi); |
25f2ca53 | 4426 | break; |
4427 | } | |
4428 | } | |
4429 | } | |
5424b7ba | 4430 | } |
342dd0c6 | 4431 | |
5fd9c12b KA |
4432 | /* |
4433 | * evpn - enable advertisement of default g/w | |
4434 | */ | |
4435 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4436 | safi_t safi, bool add) | |
4437 | { | |
4438 | struct prefix ip_prefix; | |
4439 | ||
4440 | /* form the default prefix 0.0.0.0/0 */ | |
4441 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4442 | ip_prefix.family = afi2family(afi); | |
4443 | ||
4444 | if (add) { | |
4445 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4446 | NULL, afi, safi); | |
4447 | } else { | |
4448 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4449 | afi, safi); | |
4450 | } | |
4451 | } | |
4452 | ||
4453 | ||
2f69f6d3 | 4454 | /* |
4455 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4456 | * to this function correspond to those of the source IP prefix (best | |
4457 | * path in the case of the attr. In the case of a local prefix (when we | |
4458 | * are advertising local subnets), the src_attr will be NULL. | |
4459 | */ | |
bd494ec5 | 4460 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4461 | struct attr *src_attr, afi_t afi, |
4462 | safi_t safi) | |
5424b7ba MK |
4463 | { |
4464 | int ret = 0; | |
4465 | struct prefix_evpn evp; | |
7c82b312 | 4466 | |
31310b25 | 4467 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 4468 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 4469 | if (ret) |
e50f7cfd | 4470 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4471 | "%u: Failed to create type-5 route for prefix %pFX", |
4472 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4473 | } |
4474 | ||
2f69f6d3 | 4475 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4476 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4477 | * advertisement is enabled. | |
4478 | */ | |
996c9314 LB |
4479 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4480 | safi_t safi) | |
342dd0c6 | 4481 | { |
4482 | struct bgp_table *table = NULL; | |
9bcb3eef | 4483 | struct bgp_dest *dest = NULL; |
40381db7 | 4484 | struct bgp_path_info *pi; |
342dd0c6 | 4485 | |
053905d2 | 4486 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4487 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4488 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4489 | * attribute. Also, ensure that the route is injectable |
4490 | * into EVPN. | |
2f69f6d3 | 4491 | * TODO: Support for AddPath for EVPN. |
4492 | */ | |
9bcb3eef | 4493 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4494 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4495 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4496 | |
4497 | /* apply the route-map */ | |
4498 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4499 | route_map_result_t ret; |
e34291b8 | 4500 | struct bgp_path_info tmp_pi; |
4501 | struct bgp_path_info_extra tmp_pie; | |
4502 | struct attr tmp_attr; | |
4503 | ||
4504 | tmp_attr = *pi->attr; | |
4505 | ||
4506 | /* Fill temp path_info */ | |
9bcb3eef DS |
4507 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4508 | dest, pi, pi->peer, | |
4509 | &tmp_attr); | |
e34291b8 | 4510 | |
4511 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4512 | |
996c9314 LB |
4513 | ret = route_map_apply( |
4514 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4515 | .map, | |
9bcb3eef | 4516 | bgp_dest_get_prefix(dest), |
1782514f | 4517 | &tmp_pi); |
e34291b8 | 4518 | if (ret == RMAP_DENYMATCH) { |
4519 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4520 | continue; |
e34291b8 | 4521 | } |
4522 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4523 | bgp_vrf, |
9bcb3eef | 4524 | bgp_dest_get_prefix(dest), |
b54892e0 | 4525 | &tmp_attr, afi, safi); |
e34291b8 | 4526 | } else |
4527 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4528 | bgp_vrf, |
9bcb3eef | 4529 | bgp_dest_get_prefix(dest), |
b54892e0 | 4530 | pi->attr, afi, safi); |
2f69f6d3 | 4531 | break; |
4532 | } | |
4533 | } | |
31310b25 | 4534 | } |
342dd0c6 | 4535 | } |
4536 | ||
996c9314 | 4537 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4538 | { |
4539 | struct listnode *node, *nnode, *node_to_del; | |
4540 | struct ecommunity *ecom, *ecom_auto; | |
4541 | struct ecommunity_val eval; | |
4542 | ||
bf1061d8 VB |
4543 | if (bgp->advertise_autort_rfc8365) |
4544 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4545 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4546 | ||
4547 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4548 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4549 | node_to_del = NULL; |
4550 | ||
4551 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4552 | if (ecommunity_match(ecom, ecom_auto)) { | |
4553 | ecommunity_free(&ecom); | |
4554 | node_to_del = node; | |
d74a6cc1 | 4555 | break; |
c581d8b0 MK |
4556 | } |
4557 | } | |
4558 | ||
4559 | if (node_to_del) | |
4560 | list_delete_node(rtl, node_to_del); | |
4561 | ||
4562 | ecommunity_free(&ecom_auto); | |
4563 | } | |
4564 | ||
4565 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4566 | struct ecommunity *ecomadd) |
c581d8b0 | 4567 | { |
5ba238b7 | 4568 | /* uninstall routes from vrf */ |
3d0b43d7 | 4569 | if (is_l3vni_live(bgp_vrf)) |
4570 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4571 | |
4572 | /* Cleanup the RT to VRF mapping */ | |
4573 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4574 | ||
c581d8b0 MK |
4575 | /* Remove auto generated RT */ |
4576 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4577 | ||
4578 | /* Add the newly configured RT to RT list */ | |
4579 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4580 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4581 | ||
3d0b43d7 | 4582 | /* map VRF to its RTs and install routes matching the new RTs */ |
4583 | if (is_l3vni_live(bgp_vrf)) { | |
4584 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4585 | install_routes_for_vrf(bgp_vrf); | |
4586 | } | |
c581d8b0 MK |
4587 | } |
4588 | ||
4589 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4590 | struct ecommunity *ecomdel) | |
4591 | { | |
4592 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4593 | struct ecommunity *ecom = NULL; | |
4594 | ||
5ba238b7 | 4595 | /* uninstall routes from vrf */ |
3d0b43d7 | 4596 | if (is_l3vni_live(bgp_vrf)) |
4597 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4598 | |
4599 | /* Cleanup the RT to VRF mapping */ | |
4600 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4601 | ||
c581d8b0 MK |
4602 | /* remove the RT from the RT list */ |
4603 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4604 | if (ecommunity_match(ecom, ecomdel)) { | |
4605 | ecommunity_free(&ecom); | |
4606 | node_to_del = node; | |
4607 | break; | |
4608 | } | |
4609 | } | |
4610 | ||
4611 | if (node_to_del) | |
4612 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4613 | ||
b3a4db3d | 4614 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4615 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4616 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4617 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4618 | if (is_l3vni_live(bgp_vrf)) |
4619 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4620 | } |
4621 | ||
3d0b43d7 | 4622 | /* map VRFs to its RTs and install routes matching this new RT */ |
4623 | if (is_l3vni_live(bgp_vrf)) { | |
4624 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4625 | install_routes_for_vrf(bgp_vrf); | |
4626 | } | |
c581d8b0 MK |
4627 | } |
4628 | ||
4629 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4630 | struct ecommunity *ecomadd) | |
4631 | { | |
4632 | /* remove auto-generated RT */ | |
4633 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4634 | ||
4635 | /* Add the new RT to the RT list */ | |
4636 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4637 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4638 | ||
ebdc9e64 AD |
4639 | if (is_l3vni_live(bgp_vrf)) |
4640 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4641 | } |
4642 | ||
4643 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4644 | struct ecommunity *ecomdel) | |
4645 | { | |
4646 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4647 | struct ecommunity *ecom = NULL; | |
4648 | ||
4649 | /* Remove the RT from the RT list */ | |
4650 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4651 | if (ecommunity_match(ecom, ecomdel)) { | |
4652 | ecommunity_free(&ecom); | |
4653 | node_to_del = node; | |
4654 | break; | |
4655 | } | |
4656 | } | |
4657 | ||
4658 | if (node_to_del) | |
4659 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4660 | ||
1525e99f DS |
4661 | /* |
4662 | * Temporary assert to make SA happy. | |
4663 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4664 | * which means that SA is going to complain about | |
4665 | * the list_isempty call, which doesn't NULL check. | |
4666 | * So until we get this situation cleaned up, here | |
4667 | * we are. | |
4668 | */ | |
4669 | assert(bgp_vrf->vrf_export_rtl); | |
4670 | ||
c581d8b0 | 4671 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4672 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4673 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4674 | if (is_l3vni_live(bgp_vrf)) |
4675 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4676 | } |
4677 | ||
ebdc9e64 AD |
4678 | if (is_l3vni_live(bgp_vrf)) |
4679 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4680 | } |
4681 | ||
2d48ee25 | 4682 | /* |
4683 | * Handle change to BGP router id. This is invoked twice by the change | |
4684 | * handler, first before the router id has been changed and then after | |
4685 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4686 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4687 | * will result in the routes being re-advertised. |
4688 | */ | |
d62a17ae | 4689 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4690 | { |
5394a276 CS |
4691 | struct listnode *node; |
4692 | struct bgp *bgp_vrf; | |
4693 | ||
676f83b9 | 4694 | if (withdraw) { |
4695 | ||
4696 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4697 | stored in the global table for this vrf |
4698 | */ | |
80b140af | 4699 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4700 | |
4701 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4702 | * L2-VNIs |
4703 | */ | |
d62a17ae | 4704 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4705 | (void (*)(struct hash_bucket *, |
d62a17ae | 4706 | void *))withdraw_router_id_vni, |
4707 | bgp); | |
5394a276 CS |
4708 | |
4709 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4710 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4711 | if (bgp_vrf->evpn_info->advertise_pip && | |
4712 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4713 | == INADDR_ANY)) | |
4714 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4715 | = INADDR_ANY; | |
4716 | } | |
4717 | } | |
676f83b9 | 4718 | } else { |
4719 | ||
5394a276 CS |
4720 | /* Assign new default instance router-id */ |
4721 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4722 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4723 | if (bgp_vrf->evpn_info->advertise_pip && | |
4724 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4725 | == INADDR_ANY)) { | |
4726 | bgp_vrf->evpn_info->pip_ip = | |
4727 | bgp->router_id; | |
4728 | /* advertise type-5 routes with | |
4729 | * new nexthop | |
4730 | */ | |
4731 | update_advertise_vrf_routes(bgp_vrf); | |
4732 | } | |
4733 | } | |
4734 | } | |
4735 | ||
676f83b9 | 4736 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4737 | * RD |
4738 | */ | |
80b140af | 4739 | update_router_id_vrf(bgp); |
676f83b9 | 4740 | |
4741 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4742 | * new RD |
4743 | */ | |
d62a17ae | 4744 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4745 | (void (*)(struct hash_bucket *, |
d62a17ae | 4746 | void *))update_router_id_vni, |
4747 | bgp); | |
676f83b9 | 4748 | } |
2d48ee25 | 4749 | } |
4750 | ||
bf1061d8 VB |
4751 | /* |
4752 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4753 | */ | |
4754 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4755 | { | |
4756 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4757 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4758 | void*))update_autort_vni, |
4759 | bgp); | |
4204021e PG |
4760 | if (bgp->l3vni) |
4761 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
4762 | } |
4763 | ||
90e60aa7 | 4764 | /* |
4765 | * Handle change to export RT - update and advertise local routes. | |
4766 | */ | |
d62a17ae | 4767 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4768 | { |
d62a17ae | 4769 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4770 | } |
4771 | ||
996c9314 | 4772 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4773 | { |
4774 | if (withdraw) | |
4775 | delete_withdraw_vrf_routes(bgp_vrf); | |
4776 | else | |
4777 | update_advertise_vrf_routes(bgp_vrf); | |
4778 | } | |
4779 | ||
90e60aa7 | 4780 | /* |
4781 | * Handle change to RD. This is invoked twice by the change handler, | |
4782 | * first before the RD has been changed and then after the RD has | |
4783 | * been changed. The first invocation will result in local routes | |
4784 | * of this VNI being deleted and withdrawn and the next will result | |
4785 | * in the routes being re-advertised. | |
4786 | */ | |
d62a17ae | 4787 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4788 | int withdraw) | |
90e60aa7 | 4789 | { |
d62a17ae | 4790 | if (withdraw) |
4791 | delete_withdraw_vni_routes(bgp, vpn); | |
4792 | else | |
4793 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4794 | } |
4795 | ||
4796 | /* | |
4797 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4798 | */ | |
d62a17ae | 4799 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4800 | { |
d62a17ae | 4801 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4802 | } |
4803 | ||
4804 | /* | |
4805 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4806 | * to Import RT. | |
4807 | */ | |
d62a17ae | 4808 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4809 | { |
d62a17ae | 4810 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4811 | } |
4812 | ||
b16031a2 | 4813 | /* |
b57ba6d2 | 4814 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4815 | */ |
d7c0a89a | 4816 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4817 | int len) |
b16031a2 | 4818 | { |
b57ba6d2 | 4819 | vni_t vni1, vni2; |
b16031a2 | 4820 | |
b57ba6d2 MK |
4821 | vni1 = label2vni(label); |
4822 | if (num_labels == 2) { | |
996c9314 | 4823 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4824 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4825 | } else | |
4826 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4827 | return buf; |
b16031a2 | 4828 | } |
4829 | ||
9c92b5f7 MK |
4830 | /* |
4831 | * Function to convert evpn route to json format. | |
4832 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4833 | */ | |
bd494ec5 | 4834 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4835 | { |
b682f6de | 4836 | char buf1[ETHER_ADDR_STRLEN]; |
4837 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4838 | uint8_t family; |
4839 | uint8_t prefixlen; | |
9c92b5f7 | 4840 | |
b682f6de | 4841 | if (!json) |
4842 | return; | |
9c92b5f7 | 4843 | |
44c69747 LK |
4844 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4845 | ||
4846 | switch (p->prefix.route_type) { | |
4847 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4848 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4849 | p->prefix.macip_addr.eth_tag); |
4850 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4851 | json_object_string_add(json, "mac", | |
4852 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4853 | sizeof(buf1))); | |
4854 | ||
4855 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4856 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4857 | AF_INET6; | |
4858 | prefixlen = (family == AF_INET) ? | |
4859 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4860 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4861 | buf2, PREFIX2STR_BUFFER); | |
4862 | json_object_int_add(json, "ipLen", prefixlen); | |
4863 | json_object_string_add(json, "ip", buf2); | |
4864 | } | |
4865 | break; | |
dff8f48d | 4866 | |
44c69747 LK |
4867 | case BGP_EVPN_IMET_ROUTE: |
4868 | json_object_int_add(json, "ethTag", | |
4869 | p->prefix.imet_addr.eth_tag); | |
4870 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4871 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4872 | IPV6_MAX_BITLEN; | |
4873 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4874 | PREFIX2STR_BUFFER); | |
4875 | json_object_int_add(json, "ipLen", prefixlen); | |
4876 | json_object_string_add(json, "ip", buf2); | |
4877 | break; | |
dff8f48d | 4878 | |
44c69747 LK |
4879 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4880 | json_object_int_add(json, "ethTag", | |
4881 | p->prefix.prefix_addr.eth_tag); | |
4882 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4883 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4884 | buf2, sizeof(buf2)); | |
4885 | json_object_int_add(json, "ipLen", | |
4886 | p->prefix.prefix_addr.ip_prefix_length); | |
4887 | json_object_string_add(json, "ip", buf2); | |
4888 | break; | |
4889 | ||
4890 | default: | |
4891 | break; | |
dff8f48d | 4892 | } |
9c92b5f7 MK |
4893 | } |
4894 | ||
128ea8ab | 4895 | /* |
4896 | * Encode EVPN prefix in Update (MP_REACH) | |
4897 | */ | |
5f040085 DS |
4898 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4899 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 4900 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 4901 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 4902 | { |
4903 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4904 | int len, ipa_len = 0; |
d62a17ae | 4905 | |
be92fc9f | 4906 | if (addpath_capable) |
d62a17ae | 4907 | stream_putl(s, addpath_tx_id); |
4908 | ||
4909 | /* Route type */ | |
4910 | stream_putc(s, evp->prefix.route_type); | |
4911 | ||
4912 | switch (evp->prefix.route_type) { | |
4913 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4914 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4915 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4916 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4917 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4918 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4919 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4920 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4921 | len += 3; | |
4922 | stream_putc(s, len); | |
996c9314 | 4923 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4924 | if (attr) |
c44ab6f1 | 4925 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4926 | else |
4927 | stream_put(s, 0, 10); | |
3714a385 | 4928 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4929 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4930 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4931 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4932 | if (ipa_len) /* IP */ | |
4933 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4934 | ipa_len); | |
b57ba6d2 MK |
4935 | /* 1st label is the L2 VNI */ |
4936 | stream_put(s, label, BGP_LABEL_BYTES); | |
4937 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4938 | if (ipa_len && num_labels > 1) | |
996c9314 | 4939 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4940 | break; |
4941 | ||
4942 | case BGP_EVPN_IMET_ROUTE: | |
4943 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4944 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4945 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4946 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4947 | /* Originating Router's IP Addr */ | |
3714a385 | 4948 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4949 | break; |
4950 | ||
50f74cf1 | 4951 | case BGP_EVPN_ES_ROUTE: |
4952 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4953 | stream_put(s, prd->val, 8); /* RD */ | |
4954 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4955 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4956 | /* VTEP IP */ |
4957 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4958 | break; |
4959 | ||
c44ab6f1 AK |
4960 | case BGP_EVPN_AD_ROUTE: |
4961 | /* RD, ESI, EthTag, 1 VNI */ | |
4962 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4963 | stream_putc(s, len); | |
4964 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4965 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4966 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4967 | stream_put(s, label, BGP_LABEL_BYTES); | |
4968 | break; | |
4969 | ||
d62a17ae | 4970 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4971 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4972 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4973 | break; |
4974 | ||
4975 | default: | |
4976 | break; | |
4977 | } | |
4978 | } | |
4979 | ||
4980 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4981 | struct bgp_nlri *packet, int withdraw) | |
4982 | { | |
d7c0a89a QY |
4983 | uint8_t *pnt; |
4984 | uint8_t *lim; | |
d62a17ae | 4985 | afi_t afi; |
4986 | safi_t safi; | |
d7c0a89a | 4987 | uint32_t addpath_id; |
be92fc9f | 4988 | bool addpath_capable; |
d62a17ae | 4989 | int psize = 0; |
d7c0a89a | 4990 | uint8_t rtype; |
d62a17ae | 4991 | struct prefix p; |
4992 | ||
d62a17ae | 4993 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4994 | pnt = packet->nlri; | |
4995 | lim = pnt + packet->length; | |
4996 | afi = packet->afi; | |
4997 | safi = packet->safi; | |
4998 | addpath_id = 0; | |
4999 | ||
be92fc9f | 5000 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 5001 | |
5002 | for (; pnt < lim; pnt += psize) { | |
5003 | /* Clear prefix structure. */ | |
5004 | memset(&p, 0, sizeof(struct prefix)); | |
5005 | ||
5006 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 5007 | if (addpath_capable) { |
d62a17ae | 5008 | /* When packet overflow occurs return immediately. */ |
5009 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5010 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5011 | |
a3a850a1 S |
5012 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5013 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5014 | pnt += BGP_ADDPATH_ID_LEN; |
5015 | } | |
5016 | ||
5017 | /* All EVPN NLRI types start with type and length. */ | |
5018 | if (pnt + 2 > lim) | |
513386b5 | 5019 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5020 | |
5021 | rtype = *pnt++; | |
3f54c705 | 5022 | psize = *pnt++; |
d62a17ae | 5023 | |
5024 | /* When packet overflow occur return immediately. */ | |
5025 | if (pnt + psize > lim) | |
513386b5 | 5026 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5027 | |
5028 | switch (rtype) { | |
5029 | case BGP_EVPN_MAC_IP_ROUTE: | |
5030 | if (process_type2_route(peer, afi, safi, | |
5031 | withdraw ? NULL : attr, pnt, | |
5032 | psize, addpath_id)) { | |
af4c2728 | 5033 | flog_err( |
e50f7cfd | 5034 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5035 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5036 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5037 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5038 | } |
5039 | break; | |
5040 | ||
5041 | case BGP_EVPN_IMET_ROUTE: | |
5042 | if (process_type3_route(peer, afi, safi, | |
5043 | withdraw ? NULL : attr, pnt, | |
5044 | psize, addpath_id)) { | |
af4c2728 | 5045 | flog_err( |
e50f7cfd | 5046 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5047 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5048 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5049 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5050 | } |
5051 | break; | |
5052 | ||
50f74cf1 | 5053 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5054 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5055 | withdraw ? NULL : attr, pnt, |
5056 | psize, addpath_id)) { | |
af4c2728 | 5057 | flog_err( |
e50f7cfd | 5058 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5059 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5060 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5061 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5062 | } |
5063 | break; | |
5064 | ||
c44ab6f1 AK |
5065 | case BGP_EVPN_AD_ROUTE: |
5066 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5067 | withdraw ? NULL : attr, pnt, | |
5068 | psize, addpath_id)) { | |
5069 | flog_err( | |
5070 | EC_BGP_PKT_PROCESS, | |
5071 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5072 | peer->bgp->vrf_id, peer->host, psize); | |
5073 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5074 | } | |
5075 | break; | |
5076 | ||
d62a17ae | 5077 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5078 | if (process_type5_route(peer, afi, safi, |
5079 | withdraw ? NULL : attr, pnt, | |
5080 | psize, addpath_id)) { | |
af4c2728 | 5081 | flog_err( |
e50f7cfd | 5082 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5083 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5084 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5085 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5086 | } |
5087 | break; | |
5088 | ||
5089 | default: | |
5090 | break; | |
5091 | } | |
5092 | } | |
5093 | ||
5094 | /* Packet length consistency check. */ | |
5095 | if (pnt != lim) | |
513386b5 | 5096 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5097 | |
513386b5 | 5098 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5099 | } |
5100 | ||
10ebe1ab MK |
5101 | /* |
5102 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5103 | * The mapping will be used during route processing. | |
10ebe1ab MK |
5104 | * bgp_vrf: specific bgp vrf instance on which RT is configured |
5105 | */ | |
5106 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5107 | { | |
f6e07e1b | 5108 | uint32_t i = 0; |
10ebe1ab MK |
5109 | struct ecommunity_val *eval = NULL; |
5110 | struct listnode *node = NULL, *nnode = NULL; | |
5111 | struct ecommunity *ecom = NULL; | |
5112 | ||
5113 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5114 | for (i = 0; i < ecom->size; i++) { | |
5115 | eval = (struct ecommunity_val *)(ecom->val | |
5116 | + (i | |
5117 | * ECOMMUNITY_SIZE)); | |
5118 | map_vrf_to_rt(bgp_vrf, eval); | |
5119 | } | |
5120 | } | |
5121 | } | |
5122 | ||
5123 | /* | |
5124 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5125 | */ | |
5126 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5127 | { | |
f6e07e1b | 5128 | uint32_t i; |
10ebe1ab MK |
5129 | struct ecommunity_val *eval; |
5130 | struct listnode *node, *nnode; | |
5131 | struct ecommunity *ecom; | |
5132 | ||
5133 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5134 | for (i = 0; i < ecom->size; i++) { | |
5135 | struct vrf_irt_node *irt; | |
5136 | struct ecommunity_val eval_tmp; | |
5137 | ||
5138 | eval = (struct ecommunity_val *)(ecom->val | |
5139 | + (i | |
5140 | * ECOMMUNITY_SIZE)); | |
5141 | /* If using "automatic" RT, we only care about the | |
5142 | * local-admin sub-field. | |
5143 | * This is to facilitate using VNI as the RT for EBGP | |
5144 | * peering too. | |
5145 | */ | |
5146 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5147 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5148 | BGP_VRF_IMPORT_RT_CFGD)) | |
5149 | mask_ecom_global_admin(&eval_tmp, eval); | |
5150 | ||
5151 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5152 | if (irt) | |
5153 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5154 | } | |
5155 | } | |
5156 | } | |
5157 | ||
5158 | ||
128ea8ab | 5159 | /* |
5160 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5161 | * The mapping will be used during route processing. | |
5162 | */ | |
d62a17ae | 5163 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5164 | { |
f6e07e1b | 5165 | uint32_t i; |
d62a17ae | 5166 | struct ecommunity_val *eval; |
5167 | struct listnode *node, *nnode; | |
5168 | struct ecommunity *ecom; | |
128ea8ab | 5169 | |
d62a17ae | 5170 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5171 | for (i = 0; i < ecom->size; i++) { | |
5172 | eval = (struct ecommunity_val *)(ecom->val | |
5173 | + (i | |
5174 | * ECOMMUNITY_SIZE)); | |
5175 | map_vni_to_rt(bgp, vpn, eval); | |
5176 | } | |
5177 | } | |
128ea8ab | 5178 | } |
5179 | ||
5180 | /* | |
5181 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5182 | */ | |
d62a17ae | 5183 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5184 | { |
f6e07e1b | 5185 | uint32_t i; |
d62a17ae | 5186 | struct ecommunity_val *eval; |
5187 | struct listnode *node, *nnode; | |
5188 | struct ecommunity *ecom; | |
128ea8ab | 5189 | |
d62a17ae | 5190 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5191 | for (i = 0; i < ecom->size; i++) { | |
5192 | struct irt_node *irt; | |
5193 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5194 | |
d62a17ae | 5195 | eval = (struct ecommunity_val *)(ecom->val |
5196 | + (i | |
5197 | * ECOMMUNITY_SIZE)); | |
5198 | /* If using "automatic" RT, we only care about the | |
5199 | * local-admin sub-field. | |
5200 | * This is to facilitate using VNI as the RT for EBGP | |
5201 | * peering too. | |
5202 | */ | |
5203 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5204 | if (!is_import_rt_configured(vpn)) | |
5205 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5206 | |
d62a17ae | 5207 | irt = lookup_import_rt(bgp, &eval_tmp); |
5208 | if (irt) | |
5209 | unmap_vni_from_rt(bgp, vpn, irt); | |
5210 | } | |
5211 | } | |
128ea8ab | 5212 | } |
5213 | ||
5214 | /* | |
5215 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5216 | * The mapping will be used during route processing. | |
5217 | */ | |
d62a17ae | 5218 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5219 | { |
c581d8b0 | 5220 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5221 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5222 | |
d62a17ae | 5223 | /* Map RT to VNI */ |
5224 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5225 | } |
5226 | ||
5227 | /* | |
5228 | * Derive Export RT automatically for VNI. | |
5229 | */ | |
d62a17ae | 5230 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5231 | { |
c581d8b0 | 5232 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5233 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5234 | } |
5235 | ||
676f83b9 | 5236 | /* |
5237 | * Derive RD automatically for VNI using passed information - it | |
5238 | * is of the form RouterId:unique-id-for-vni. | |
5239 | */ | |
5240 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5241 | { | |
9e97ff03 CS |
5242 | if (is_vrf_rd_configured(bgp)) |
5243 | return; | |
5244 | ||
92708db6 | 5245 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5246 | } |
5247 | ||
128ea8ab | 5248 | /* |
5249 | * Derive RD automatically for VNI using passed information - it | |
5250 | * is of the form RouterId:unique-id-for-vni. | |
5251 | */ | |
d62a17ae | 5252 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5253 | { |
c44ab6f1 | 5254 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5255 | |
d62a17ae | 5256 | vpn->prd.family = AF_UNSPEC; |
5257 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5258 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5259 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5260 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5261 | } |
5262 | ||
7df407ed CS |
5263 | /* |
5264 | * Lookup L3-VNI | |
5265 | */ | |
5266 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5267 | { | |
5268 | struct list *inst = bm->bgp; | |
5269 | struct listnode *node; | |
5270 | struct bgp *bgp_vrf; | |
5271 | ||
5272 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5273 | if (bgp_vrf->l3vni == vni) | |
5274 | return true; | |
5275 | } | |
5276 | ||
5277 | return false; | |
5278 | } | |
5279 | ||
128ea8ab | 5280 | /* |
5281 | * Lookup VNI. | |
5282 | */ | |
d62a17ae | 5283 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5284 | { |
d62a17ae | 5285 | struct bgpevpn *vpn; |
5286 | struct bgpevpn tmp; | |
128ea8ab | 5287 | |
d62a17ae | 5288 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5289 | tmp.vni = vni; | |
5290 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5291 | return vpn; | |
128ea8ab | 5292 | } |
5293 | ||
5294 | /* | |
5295 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5296 | */ | |
d62a17ae | 5297 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5298 | struct in_addr originator_ip, |
5299 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5300 | struct in_addr mcast_grp, |
5301 | ifindex_t svi_ifindex) | |
128ea8ab | 5302 | { |
d62a17ae | 5303 | struct bgpevpn *vpn; |
128ea8ab | 5304 | |
d62a17ae | 5305 | if (!bgp) |
5306 | return NULL; | |
128ea8ab | 5307 | |
d62a17ae | 5308 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5309 | |
d62a17ae | 5310 | /* Set values - RD and RT set to defaults. */ |
5311 | vpn->vni = vni; | |
5312 | vpn->originator_ip = originator_ip; | |
29c53922 | 5313 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5314 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5315 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5316 | |
d62a17ae | 5317 | /* Initialize route-target import and export lists */ |
5318 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5319 | vpn->import_rtl->cmp = |
5320 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5321 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5322 | vpn->export_rtl = list_new(); |
f4a5218d AK |
5323 | vpn->export_rtl->cmp = |
5324 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5325 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 5326 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5327 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5328 | |
d62a17ae | 5329 | /* Initialize EVPN route table. */ |
960035b2 | 5330 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5331 | |
d62a17ae | 5332 | /* Add to hash */ |
ac390ef8 | 5333 | (void)hash_get(bgp->vnihash, vpn, hash_alloc_intern); |
6a8657d0 | 5334 | |
021b6596 AD |
5335 | bgp_evpn_remote_ip_hash_init(vpn); |
5336 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5337 | ||
6a8657d0 MK |
5338 | /* add to l2vni list on corresponding vrf */ |
5339 | bgpevpn_link_to_l3vni(vpn); | |
5340 | ||
c44ab6f1 AK |
5341 | bgp_evpn_vni_es_init(vpn); |
5342 | ||
d62a17ae | 5343 | QOBJ_REG(vpn, bgpevpn); |
5344 | return vpn; | |
128ea8ab | 5345 | } |
5346 | ||
5347 | /* | |
5348 | * Free a given VPN - called in multiple scenarios such as zebra | |
5349 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5350 | * This just frees appropriate memory, caller should have taken other | |
5351 | * needed actions. | |
5352 | */ | |
d62a17ae | 5353 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5354 | { |
021b6596 | 5355 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 5356 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5357 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5358 | bgp_table_unlock(vpn->route_table); |
5359 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5360 | list_delete(&vpn->import_rtl); |
5361 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5362 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 5363 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 5364 | hash_release(bgp->vnihash, vpn); |
5365 | QOBJ_UNREG(vpn); | |
5366 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5367 | } |
5368 | ||
50f74cf1 | 5369 | /* |
5370 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5371 | */ |
d62a17ae | 5372 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5373 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5374 | { |
40381db7 | 5375 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5376 | } |
5377 | ||
5378 | /* | |
50f74cf1 | 5379 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5380 | */ |
d62a17ae | 5381 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5382 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5383 | { |
40381db7 | 5384 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5385 | } |
5386 | ||
db0e1937 MK |
5387 | /* filter routes which have martian next hops */ |
5388 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5389 | { | |
0291c246 MK |
5390 | afi_t afi; |
5391 | safi_t safi; | |
9bcb3eef | 5392 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5393 | struct bgp_table *table; |
40381db7 | 5394 | struct bgp_path_info *pi; |
db0e1937 MK |
5395 | |
5396 | afi = AFI_L2VPN; | |
5397 | safi = SAFI_EVPN; | |
5398 | ||
5399 | /* Walk entire global routing table and evaluate routes which could be | |
5400 | * imported into this VPN. Note that we cannot just look at the routes | |
5401 | * for the VNI's RD - | |
5402 | * remote routes applicable for this VNI could have any RD. | |
5403 | */ | |
5404 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5405 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5406 | rd_dest = bgp_route_next(rd_dest)) { | |
5407 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5408 | if (!table) |
5409 | continue; | |
5410 | ||
9bcb3eef DS |
5411 | for (dest = bgp_table_top(table); dest; |
5412 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5413 | |
9bcb3eef | 5414 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5415 | pi = pi->next) { |
db0e1937 MK |
5416 | |
5417 | /* Consider "valid" remote routes applicable for | |
5418 | * this VNI. */ | |
40381db7 DS |
5419 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5420 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5421 | continue; |
9bcb3eef DS |
5422 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5423 | pi->sub_type, pi->attr, | |
5424 | dest)) { | |
b54892e0 | 5425 | const struct prefix *p = |
9bcb3eef | 5426 | bgp_dest_get_prefix(dest); |
db0e1937 | 5427 | |
b54892e0 DS |
5428 | if (bgp_debug_update(pi->peer, p, NULL, |
5429 | 1)) { | |
5430 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5431 | |
b54892e0 | 5432 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5433 | attr_str, |
5434 | sizeof(attr_str)); | |
db0e1937 | 5435 | |
db0e1937 | 5436 | zlog_debug( |
56ca3b5b | 5437 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5438 | bgp->vrf_id, dest, |
db0e1937 | 5439 | attr_str); |
b54892e0 | 5440 | } |
db0e1937 | 5441 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5442 | p, pi); |
db0e1937 | 5443 | |
9bcb3eef | 5444 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5445 | safi); |
db0e1937 | 5446 | } |
db0e1937 MK |
5447 | } |
5448 | } | |
5449 | } | |
5450 | ||
5451 | return 0; | |
5452 | } | |
5453 | ||
128ea8ab | 5454 | /* |
5455 | * Handle del of a local MACIP. | |
5456 | */ | |
d62a17ae | 5457 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5458 | struct ipaddr *ip, int state) |
128ea8ab | 5459 | { |
d62a17ae | 5460 | struct bgpevpn *vpn; |
5461 | struct prefix_evpn p; | |
9bcb3eef | 5462 | struct bgp_dest *dest; |
128ea8ab | 5463 | |
d62a17ae | 5464 | /* Lookup VNI hash - should exist. */ |
5465 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5466 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5467 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5468 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5469 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5470 | return -1; | |
5471 | } | |
128ea8ab | 5472 | |
d62a17ae | 5473 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5474 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5475 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5476 | delete_evpn_route(bgp, vpn, &p); | |
5477 | } else { | |
5478 | /* Re-instate the current remote best path if any */ | |
9bcb3eef | 5479 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
e71ad4b6 | 5480 | if (dest) { |
9bcb3eef | 5481 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
5482 | bgp_dest_unlock_node(dest); |
5483 | } | |
ec0ab544 | 5484 | } |
128ea8ab | 5485 | |
d62a17ae | 5486 | return 0; |
128ea8ab | 5487 | } |
5488 | ||
5489 | /* | |
5490 | * Handle add of a local MACIP. | |
5491 | */ | |
d62a17ae | 5492 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5493 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5494 | { |
d62a17ae | 5495 | struct bgpevpn *vpn; |
5496 | struct prefix_evpn p; | |
128ea8ab | 5497 | |
d62a17ae | 5498 | /* Lookup VNI hash - should exist. */ |
5499 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5500 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5501 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5502 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5503 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5504 | return -1; | |
5505 | } | |
128ea8ab | 5506 | |
d62a17ae | 5507 | /* Create EVPN type-2 route and schedule for processing. */ |
5508 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5509 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 5510 | flog_err( |
e50f7cfd | 5511 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 5512 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 5513 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5514 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5515 | ? "sticky gateway" | |
5516 | : "", | |
c0d72166 | 5517 | mac, ip, flags); |
d62a17ae | 5518 | return -1; |
5519 | } | |
128ea8ab | 5520 | |
d62a17ae | 5521 | return 0; |
128ea8ab | 5522 | } |
5523 | ||
e3b78da8 | 5524 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5525 | struct bgp *bgp_vrf) |
5526 | { | |
e3b78da8 | 5527 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5528 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5529 | |
5e53dce3 T |
5530 | bgp_evpn = bgp_get_evpn(); |
5531 | assert(bgp_evpn); | |
6a8657d0 | 5532 | |
6a8657d0 MK |
5533 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5534 | bgpevpn_link_to_l3vni(vpn); | |
5535 | } | |
5536 | ||
14e814ea CS |
5537 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5538 | struct ethaddr *svi_rmac, | |
5539 | struct ethaddr *vrr_rmac, | |
0483af6e | 5540 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5541 | ifindex_t svi_ifindex, |
5542 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5543 | { |
5544 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5545 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5546 | struct listnode *node = NULL; |
5547 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5548 | as_t as = 0; |
5549 | ||
3621ebc5 | 5550 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5551 | * auto-creatio |
5552 | */ | |
5e53dce3 T |
5553 | bgp_evpn = bgp_get_evpn(); |
5554 | if (!bgp_evpn) { | |
af4c2728 | 5555 | flog_err( |
e50f7cfd | 5556 | EC_BGP_NO_DFLT, |
3621ebc5 | 5557 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5558 | l3vni); |
fe1dc5a3 MK |
5559 | return -1; |
5560 | } | |
5e53dce3 | 5561 | as = bgp_evpn->as; |
fe1dc5a3 | 5562 | |
0437e105 | 5563 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5564 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5565 | if (!bgp_vrf) { |
5566 | ||
5567 | int ret = 0; | |
5568 | ||
5d5393b9 DL |
5569 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5570 | vrf_id == VRF_DEFAULT | |
5571 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5572 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5573 | switch (ret) { |
fe1dc5a3 | 5574 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5575 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
5576 | "BGP instance is already running; AS is %u", |
5577 | as); | |
fe1dc5a3 MK |
5578 | return -1; |
5579 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5580 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 5581 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
5582 | return -1; |
5583 | } | |
5584 | ||
5585 | /* mark as auto created */ | |
5586 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5587 | } | |
5588 | ||
0483af6e | 5589 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5590 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5591 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5592 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5593 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5594 | |
14e814ea CS |
5595 | /* copy anycast MAC from VRR MAC */ |
5596 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5597 | /* copy sys RMAC from SVI MAC */ | |
5598 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5599 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5600 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5601 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5602 | ||
c0d72166 DS |
5603 | if (bgp_debug_zebra(NULL)) |
5604 | zlog_debug( | |
5605 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
5606 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
5607 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5608 | : "disable", | |
5609 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
5610 | &bgp_vrf->evpn_info->pip_rmac_static, | |
5611 | is_anycast_mac ? "Enable" : "Disable"); | |
5612 | ||
c48d9f5f | 5613 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5614 | if (filter) { |
c48d9f5f MK |
5615 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5616 | ||
10f70510 AD |
5617 | /* |
5618 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5619 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5620 | * that explicitly. | |
5621 | */ | |
5622 | } else { | |
5623 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5624 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5625 | ||
5626 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5627 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5628 | ||
5629 | /* | |
5630 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5631 | * flag, update all MACIP routes in this VNI | |
5632 | */ | |
5633 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5634 | update_all_type2_routes(bgp_evpn, vpn); | |
5635 | } | |
5636 | } | |
5637 | } | |
5638 | ||
530e8a6e | 5639 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5640 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5641 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5642 | else |
5643 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5644 | ||
c581d8b0 MK |
5645 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5646 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5647 | |
5648 | /* auto derive RD */ | |
676f83b9 | 5649 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5650 | |
6a8657d0 | 5651 | /* link all corresponding l2vnis */ |
5e53dce3 | 5652 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5653 | (void (*)(struct hash_bucket *, |
996c9314 | 5654 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5655 | bgp_vrf); |
5656 | ||
c48d9f5f MK |
5657 | /* Only update all corresponding type-2 routes if we are advertising two |
5658 | * labels along with type-2 routes | |
5659 | */ | |
5660 | if (!filter) | |
5661 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5662 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5663 | |
06d2e8f3 MK |
5664 | /* advertise type-5 routes if needed */ |
5665 | update_advertise_vrf_routes(bgp_vrf); | |
5666 | ||
5ba238b7 MK |
5667 | /* install all remote routes belonging to this l3vni into correspondng |
5668 | * vrf */ | |
5669 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5670 | |
5671 | return 0; | |
5672 | } | |
5673 | ||
996c9314 | 5674 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5675 | { |
5676 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5677 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5678 | struct listnode *node = NULL; |
18abc1eb | 5679 | struct listnode *next = NULL; |
f1f8b53c | 5680 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5681 | |
5682 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5683 | if (!bgp_vrf) { | |
af4c2728 | 5684 | flog_err( |
e50f7cfd | 5685 | EC_BGP_NO_DFLT, |
996c9314 LB |
5686 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5687 | l3vni); | |
fe1dc5a3 MK |
5688 | return -1; |
5689 | } | |
5690 | ||
5e53dce3 T |
5691 | bgp_evpn = bgp_get_evpn(); |
5692 | if (!bgp_evpn) { | |
af4c2728 | 5693 | flog_err( |
e50f7cfd | 5694 | EC_BGP_NO_DFLT, |
3621ebc5 | 5695 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5696 | l3vni); |
f1f8b53c MK |
5697 | return -1; |
5698 | } | |
5699 | ||
d846168d | 5700 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5701 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5702 | * routes. This will uninstalling the routes from zebra and decremnt the |
5703 | * bgp info count. | |
523cafc4 | 5704 | */ |
d846168d | 5705 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5706 | |
06d2e8f3 MK |
5707 | /* delete/withdraw all type-5 routes */ |
5708 | delete_withdraw_vrf_routes(bgp_vrf); | |
5709 | ||
fe1dc5a3 MK |
5710 | /* remove the l3vni from vrf instance */ |
5711 | bgp_vrf->l3vni = 0; | |
5712 | ||
5713 | /* remove the Rmac from the BGP vrf */ | |
5714 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5715 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5716 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5717 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5718 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5719 | |
530e8a6e | 5720 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5721 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5722 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5723 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5724 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5725 | } |
530e8a6e CS |
5726 | |
5727 | /* remove default export RT */ | |
5728 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5729 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5730 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5731 | } |
fe1dc5a3 | 5732 | |
f1f8b53c | 5733 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5734 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5735 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5736 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5737 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5738 | } |
5739 | } | |
fe1dc5a3 | 5740 | |
18abc1eb | 5741 | /* If any L2VNIs point to this instance, unlink them. */ |
5742 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5743 | bgpevpn_unlink_from_l3vni(vpn); | |
5744 | ||
ff9d54fb CS |
5745 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5746 | ||
fe1dc5a3 MK |
5747 | /* Delete the instance if it was autocreated */ |
5748 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5749 | bgp_delete(bgp_vrf); | |
5750 | ||
5751 | return 0; | |
5752 | } | |
5753 | ||
128ea8ab | 5754 | /* |
5755 | * Handle del of a local VNI. | |
5756 | */ | |
d62a17ae | 5757 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5758 | { |
d62a17ae | 5759 | struct bgpevpn *vpn; |
128ea8ab | 5760 | |
d62a17ae | 5761 | /* Locate VNI hash */ |
5762 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5763 | if (!vpn) { | |
1e00627b | 5764 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5765 | flog_warn( |
e50f7cfd | 5766 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5767 | "%u: VNI hash entry for VNI %u not found at DEL", |
5768 | bgp->vrf_id, vni); | |
d62a17ae | 5769 | return 0; |
5770 | } | |
128ea8ab | 5771 | |
d62a17ae | 5772 | /* Remove all local EVPN routes and schedule for processing (to |
5773 | * withdraw from peers). | |
5774 | */ | |
5775 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5776 | |
021b6596 AD |
5777 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
5778 | ||
9daa5d47 | 5779 | vpn->svi_ifindex = 0; |
db0e1937 MK |
5780 | /* |
5781 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5782 | */ | |
5783 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5784 | ||
d62a17ae | 5785 | /* Clear "live" flag and see if hash needs to be freed. */ |
5786 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5787 | if (!is_vni_configured(vpn)) | |
5788 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5789 | |
d62a17ae | 5790 | return 0; |
128ea8ab | 5791 | } |
5792 | ||
5793 | /* | |
d1911c26 | 5794 | * Handle add (or update) of a local VNI. The VNI changes we care |
5795 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5796 | */ |
d62a17ae | 5797 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5798 | struct in_addr originator_ip, |
5799 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5800 | struct in_addr mcast_grp, |
5801 | ifindex_t svi_ifindex) | |
d62a17ae | 5802 | { |
5803 | struct bgpevpn *vpn; | |
5804 | struct prefix_evpn p; | |
5805 | ||
d62a17ae | 5806 | /* Lookup VNI. If present and no change, exit. */ |
5807 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5808 | if (vpn) { |
29c53922 | 5809 | |
d1911c26 | 5810 | if (is_vni_live(vpn) |
5811 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5812 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
5813 | && vpn->tenant_vrf_id == tenant_vrf_id |
5814 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 5815 | /* Probably some other param has changed that we don't |
5816 | * care about. */ | |
5817 | return 0; | |
5818 | ||
76d07c7a AK |
5819 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5820 | ||
021b6596 AD |
5821 | if (vpn->svi_ifindex != svi_ifindex) { |
5822 | ||
5823 | /* | |
5824 | * Unresolve all the gateway IP nexthops for this VNI | |
5825 | * for old SVI | |
5826 | */ | |
dc6cef73 AD |
5827 | bgp_evpn_remote_ip_hash_iterate( |
5828 | vpn, | |
5829 | (void (*)(struct hash_bucket *, void *)) | |
5830 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
5831 | vpn); |
5832 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
5833 | vpn->svi_ifindex = svi_ifindex; | |
5834 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5835 | ||
5836 | /* | |
5837 | * Resolve all the gateway IP nexthops for this VNI | |
5838 | * for new SVI | |
5839 | */ | |
dc6cef73 AD |
5840 | bgp_evpn_remote_ip_hash_iterate( |
5841 | vpn, | |
5842 | (void (*)(struct hash_bucket *, void *)) | |
5843 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
5844 | vpn); |
5845 | } | |
9daa5d47 | 5846 | |
d1911c26 | 5847 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 5848 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
5849 | |
5850 | /* | |
5851 | * Unresolve all the gateway IP nexthops for this VNI | |
5852 | * in old tenant vrf | |
5853 | */ | |
dc6cef73 AD |
5854 | bgp_evpn_remote_ip_hash_iterate( |
5855 | vpn, | |
5856 | (void (*)(struct hash_bucket *, void *)) | |
5857 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 5858 | vpn); |
6a8657d0 | 5859 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 5860 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 5861 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
5862 | |
5863 | /* | |
5864 | * Resolve all the gateway IP nexthops for this VNI | |
5865 | * in new tenant vrf | |
5866 | */ | |
dc6cef73 AD |
5867 | bgp_evpn_remote_ip_hash_iterate( |
5868 | vpn, | |
5869 | (void (*)(struct hash_bucket *, void *)) | |
5870 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 5871 | vpn); |
6a8657d0 | 5872 | } |
29c53922 | 5873 | |
d1911c26 | 5874 | /* If tunnel endpoint IP has changed, update (and delete prior |
5875 | * type-3 route, if needed.) | |
5876 | */ | |
5877 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5878 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5879 | |
d1911c26 | 5880 | /* Update all routes with new endpoint IP and/or export RT |
5881 | * for VRFs | |
5882 | */ | |
5883 | if (is_vni_live(vpn)) | |
5884 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5885 | } |
5886 | ||
5887 | /* Create or update as appropriate. */ | |
5888 | if (!vpn) { | |
76d07c7a | 5889 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
9daa5d47 | 5890 | mcast_grp, svi_ifindex); |
d62a17ae | 5891 | if (!vpn) { |
af4c2728 | 5892 | flog_err( |
e50f7cfd | 5893 | EC_BGP_VNI, |
d62a17ae | 5894 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5895 | bgp->vrf_id, vni); | |
5896 | return -1; | |
5897 | } | |
5898 | } | |
5899 | ||
db0e1937 | 5900 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5901 | if (is_vni_live(vpn)) |
5902 | return 0; | |
5903 | ||
d62a17ae | 5904 | /* Mark as "live" */ |
5905 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5906 | ||
db0e1937 MK |
5907 | /* tunnel is now active, add tunnel-ip to db */ |
5908 | bgp_tip_add(bgp, &originator_ip); | |
5909 | ||
5910 | /* filter routes as nexthop database has changed */ | |
5911 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5912 | ||
fd069644 DS |
5913 | /* |
5914 | * Create EVPN type-3 route and schedule for processing. | |
5915 | * | |
5916 | * RT-3 only if doing head-end replication | |
5917 | */ | |
833b8a50 AK |
5918 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5919 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5920 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5921 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5922 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5923 | "%u: Type3 route creation failure for VNI %u", | |
5924 | bgp->vrf_id, vni); | |
5925 | return -1; | |
5926 | } | |
d62a17ae | 5927 | } |
5928 | ||
5929 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5930 | * VNI, | |
5931 | * install them. | |
5932 | */ | |
5933 | install_routes_for_vni(bgp, vpn); | |
5934 | ||
d7d97010 MK |
5935 | /* If we are advertising gateway mac-ip |
5936 | It needs to be conveyed again to zebra */ | |
5937 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5938 | ||
df070e6f CS |
5939 | /* advertise svi mac-ip knob to zebra */ |
5940 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5941 | ||
d62a17ae | 5942 | return 0; |
b18825eb | 5943 | } |
14c1a7bf | 5944 | |
fd069644 DS |
5945 | /* |
5946 | * Handle change in setting for BUM handling. The supported values | |
5947 | * are head-end replication and dropping all BUM packets. Any change | |
5948 | * should be registered with zebra. Also, if doing head-end replication, | |
5949 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5950 | * to be dropped, the RT-3s must be withdrawn. | |
5951 | */ | |
5952 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5953 | { | |
5954 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5955 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5956 | "Flooding" : "Flooding Disabled"); | |
5957 | ||
5958 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5959 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5960 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5961 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5962 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5963 | } | |
5964 | ||
7724c0a1 | 5965 | /* |
5966 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5967 | * EVPN routes from peers. | |
5968 | */ | |
d62a17ae | 5969 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5970 | { |
e3b78da8 | 5971 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5972 | void *))cleanup_vni_on_disable, |
5973 | bgp); | |
7724c0a1 | 5974 | } |
5975 | ||
14c1a7bf | 5976 | /* |
5977 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5978 | * BGP instance (default) is being freed. | |
5979 | */ | |
d62a17ae | 5980 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5981 | { |
1525e99f | 5982 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5983 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5984 | bgp); |
5985 | ||
5986 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5987 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5988 | |
5989 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5990 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 5991 | |
021b6596 AD |
5992 | hash_free(bgp->vni_svi_hash); |
5993 | bgp->vni_svi_hash = NULL; | |
1525e99f | 5994 | hash_free(bgp->vnihash); |
d62a17ae | 5995 | bgp->vnihash = NULL; |
1525e99f | 5996 | |
6a154c88 DL |
5997 | list_delete(&bgp->vrf_import_rtl); |
5998 | list_delete(&bgp->vrf_export_rtl); | |
5999 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6000 | } |
6001 | ||
6002 | /* | |
6003 | * Initialization for EVPN | |
6004 | * Create | |
6005 | * VNI hash table | |
6006 | * hash for RT to VNI | |
14c1a7bf | 6007 | */ |
d62a17ae | 6008 | void bgp_evpn_init(struct bgp *bgp) |
6009 | { | |
6010 | bgp->vnihash = | |
6011 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
6012 | bgp->vni_svi_hash = |
6013 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
6014 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 6015 | bgp->import_rt_hash = |
6016 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6017 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6018 | bgp->vrf_import_rt_hash = |
6019 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6020 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6021 | bgp->vrf_import_rtl = list_new(); |
6022 | bgp->vrf_import_rtl->cmp = | |
f4a5218d AK |
6023 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6024 | bgp->vrf_import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
c581d8b0 MK |
6025 | bgp->vrf_export_rtl = list_new(); |
6026 | bgp->vrf_export_rtl->cmp = | |
f4a5218d AK |
6027 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6028 | bgp->vrf_export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
6a8657d0 | 6029 | bgp->l2vnis = list_new(); |
64465785 | 6030 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6031 | /* By default Duplicate Address Dection is enabled. |
6032 | * Max-moves (N) 5, detection time (M) 180 | |
6033 | * default action is warning-only | |
6034 | * freeze action permanently freezes address, | |
6035 | * and freeze time (auto-recovery) is disabled. | |
6036 | */ | |
6037 | if (bgp->evpn_info) { | |
6038 | bgp->evpn_info->dup_addr_detect = true; | |
6039 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6040 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6041 | bgp->evpn_info->dad_freeze = false; | |
6042 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6043 | /* Initialize zebra vxlan */ |
6044 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6045 | /* Enable PIP feature by default for bgp vrf instance */ |
6046 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6047 | struct bgp *bgp_default; | |
6048 | ||
6049 | bgp->evpn_info->advertise_pip = true; | |
6050 | bgp_default = bgp_get_default(); | |
6051 | if (bgp_default) | |
6052 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6053 | } | |
85c8d83b | 6054 | } |
fd069644 DS |
6055 | |
6056 | /* Default BUM handling is to do head-end replication. */ | |
6057 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6058 | |
6059 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6060 | } |
10ebe1ab MK |
6061 | |
6062 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6063 | { | |
6064 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6065 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6066 | } |
44c69747 LK |
6067 | |
6068 | /* | |
6069 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6070 | */ | |
5f040085 | 6071 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6072 | { |
6073 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6074 | ||
6075 | if (!pfx || pfx->family != AF_EVPN) | |
6076 | return 0; | |
6077 | ||
6078 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6079 | return 0; | |
6080 | ||
6081 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6082 | } | |
7c312383 AD |
6083 | |
6084 | /* | |
6085 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6086 | */ | |
5a1ae2c2 | 6087 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6088 | { |
6089 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6090 | ||
6091 | /* | |
e11329ca | 6092 | * EVPN routes should be marked as valid only if the nexthop is |
6093 | * reachable. Only if this happens, the route should be imported | |
6094 | * (into VNI or VRF routing tables) and/or advertised. | |
fff7545a | 6095 | * Note: This is currently applied for EVPN type-1, type-2, |
6096 | * type-3, type-4 and type-5 routes. | |
6097 | * It may be tweaked later on for other routes, or | |
e11329ca | 6098 | * even removed completely when all routes are handled. |
7c312383 | 6099 | */ |
fa46a5cd AK |
6100 | if (pfx && pfx->family == AF_EVPN |
6101 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6102 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6103 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6104 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6105 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6106 | return true; |
6107 | ||
6108 | return false; | |
6109 | } | |
021b6596 AD |
6110 | |
6111 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6112 | { | |
6113 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6114 | struct evpn_remote_ip *ip; | |
6115 | ||
6116 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6117 | *ip = *key; | |
6118 | ip->macip_path_list = list_new(); | |
6119 | ||
6120 | return ip; | |
6121 | } | |
6122 | ||
6123 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6124 | { | |
6125 | const struct evpn_remote_ip *ip = p; | |
6126 | const struct ipaddr *addr = &ip->addr; | |
6127 | ||
6128 | if (IS_IPADDR_V4(addr)) | |
6129 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6130 | ||
6131 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6132 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6133 | } | |
6134 | ||
6135 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6136 | { | |
6137 | const struct evpn_remote_ip *ip1 = p1; | |
6138 | const struct evpn_remote_ip *ip2 = p2; | |
6139 | ||
761cc919 | 6140 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6141 | } |
6142 | ||
6143 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6144 | { | |
dc6cef73 AD |
6145 | if (!evpn_resolve_overlay_index()) |
6146 | return; | |
6147 | ||
021b6596 AD |
6148 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6149 | bgp_evpn_remote_ip_hash_cmp, | |
6150 | "BGP EVPN remote IP hash"); | |
6151 | } | |
6152 | ||
6153 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6154 | { | |
6155 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6156 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6157 | ||
6158 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6159 | ||
6160 | list_delete(&ip->macip_path_list); | |
6161 | ||
6162 | hash_release(vpn->remote_ip_hash, ip); | |
6163 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6164 | } | |
6165 | ||
6166 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6167 | { | |
dc6cef73 | 6168 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6169 | return; |
6170 | ||
6171 | hash_iterate(vpn->remote_ip_hash, | |
6172 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6173 | vpn); | |
6174 | ||
6175 | hash_free(vpn->remote_ip_hash); | |
6176 | vpn->remote_ip_hash = NULL; | |
6177 | } | |
6178 | ||
6179 | /* Add a remote MAC/IP route to hash table */ | |
6180 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6181 | struct bgp_path_info *pi) | |
6182 | { | |
6183 | struct evpn_remote_ip tmp; | |
6184 | struct evpn_remote_ip *ip; | |
6185 | struct prefix_evpn *evp; | |
6186 | ||
dc6cef73 AD |
6187 | if (!evpn_resolve_overlay_index()) |
6188 | return; | |
6189 | ||
6190 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6191 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
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) { | |
6204 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6205 | return; | |
6206 | (void)listnode_add(ip->macip_path_list, pi); | |
6207 | return; | |
6208 | } | |
6209 | ||
6210 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
021b6596 AD |
6211 | (void)listnode_add(ip->macip_path_list, pi); |
6212 | ||
6213 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6214 | } | |
6215 | ||
6216 | /* Delete a remote MAC/IP route from hash table */ | |
6217 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6218 | struct bgp_path_info *pi) | |
6219 | { | |
6220 | struct evpn_remote_ip tmp; | |
6221 | struct evpn_remote_ip *ip; | |
6222 | struct prefix_evpn *evp; | |
6223 | ||
dc6cef73 AD |
6224 | if (!evpn_resolve_overlay_index()) |
6225 | return; | |
6226 | ||
021b6596 AD |
6227 | evp = (struct prefix_evpn *)&pi->net->p; |
6228 | ||
6229 | if (evp->family != AF_EVPN | |
6230 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6231 | || is_evpn_prefix_ipaddr_none(evp)) | |
6232 | return; | |
6233 | ||
6234 | tmp.addr = evp->prefix.macip_addr.ip; | |
6235 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6236 | if (ip == NULL) | |
6237 | return; | |
6238 | ||
6239 | listnode_delete(ip->macip_path_list, pi); | |
6240 | ||
6241 | if (ip->macip_path_list->count == 0) { | |
6242 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6243 | hash_release(vpn->remote_ip_hash, ip); | |
6244 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6245 | } | |
6246 | } | |
6247 | ||
dc6cef73 AD |
6248 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6249 | void (*func)(struct hash_bucket *, | |
6250 | void *), | |
6251 | void *arg) | |
6252 | { | |
6253 | if (!evpn_resolve_overlay_index()) | |
6254 | return; | |
6255 | ||
6256 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6257 | } | |
6258 | ||
021b6596 AD |
6259 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6260 | { | |
6261 | char buf[INET6_ADDRSTRLEN]; | |
6262 | char buf2[EVPN_ROUTE_STRLEN]; | |
6263 | struct prefix_evpn *evp; | |
6264 | ||
6265 | struct listnode *node = NULL; | |
6266 | struct bgp_path_info *pi = NULL; | |
6267 | struct vty *vty = (struct vty *)args; | |
6268 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6269 | ||
6270 | vty_out(vty, " Remote IP: %s\n", | |
6271 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6272 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
6273 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) { | |
6274 | evp = (struct prefix_evpn *)&pi->net->p; | |
6275 | prefix2str(evp, buf2, sizeof(buf2)); | |
6276 | vty_out(vty, " %s\n", buf2); | |
6277 | } | |
6278 | } | |
6279 | ||
6280 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6281 | { | |
6282 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6283 | struct vty *vty = (struct vty *)args; | |
6284 | ||
6285 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6286 | bgp_evpn_remote_ip_hash_iterate( |
6287 | vpn, | |
021b6596 AD |
6288 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6289 | vty); | |
6290 | vty_out(vty, "\n"); | |
6291 | } | |
6292 | ||
6293 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6294 | void *args) | |
6295 | { | |
6296 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6297 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6298 | ||
6299 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6300 | } | |
6301 | ||
6302 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6303 | void *args) | |
6304 | { | |
6305 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6306 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6307 | ||
6308 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6309 | } | |
6310 | ||
6311 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6312 | { | |
6313 | const struct bgpevpn *vpn = p; | |
6314 | ||
6315 | return jhash_1word(vpn->svi_ifindex, 0); | |
6316 | } | |
6317 | ||
6318 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6319 | { | |
6320 | const struct bgpevpn *vpn1 = p1; | |
6321 | const struct bgpevpn *vpn2 = p2; | |
6322 | ||
6323 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6324 | } | |
6325 | ||
6326 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
6327 | ifindex_t svi) | |
6328 | { | |
6329 | struct bgpevpn *vpn; | |
6330 | struct bgpevpn tmp; | |
6331 | ||
6332 | memset(&tmp, 0, sizeof(struct bgpevpn)); | |
6333 | tmp.svi_ifindex = svi; | |
6334 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
6335 | return vpn; | |
6336 | } | |
6337 | ||
6338 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
6339 | { | |
6340 | if (vpn->svi_ifindex == 0) | |
6341 | return; | |
6342 | ||
8e3aae66 | 6343 | (void)hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); |
021b6596 AD |
6344 | } |
6345 | ||
6346 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
6347 | struct bgpevpn *vpn) | |
6348 | { | |
6349 | if (vpn->svi_ifindex == 0) | |
6350 | return; | |
6351 | ||
6352 | hash_release(bgp->vni_svi_hash, vpn); | |
6353 | } | |
6354 | ||
6355 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
6356 | { | |
6357 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
6358 | struct vty *vty = (struct vty *)args; | |
6359 | ||
6360 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
6361 | } | |
6362 | ||
6363 | /* | |
6364 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
6365 | * gateway IP overlay index. | |
6366 | * This function returns true if there is a remote MAC/IP route for the gateway | |
6367 | * IP in the EVI of the nexthop SVI. | |
6368 | */ | |
6369 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
6370 | { | |
6371 | struct bgp *bgp_evpn = NULL; | |
6372 | struct bgpevpn *vpn = NULL; | |
6373 | struct evpn_remote_ip tmp; | |
6374 | struct prefix *p; | |
6375 | ||
dc6cef73 AD |
6376 | if (!evpn_resolve_overlay_index()) |
6377 | return false; | |
6378 | ||
021b6596 AD |
6379 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
6380 | return false; | |
6381 | ||
6382 | bgp_evpn = bgp_get_evpn(); | |
6383 | if (!bgp_evpn) | |
6384 | return false; | |
6385 | ||
6386 | /* | |
6387 | * Gateway IP is resolved by nht over SVI interface. | |
6388 | * Use this SVI to find corresponding EVI(L2 context) | |
6389 | */ | |
6390 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
6391 | if (!vpn) | |
6392 | return false; | |
6393 | ||
6394 | if (vpn->bgp_vrf != bnc->bgp) | |
6395 | return false; | |
6396 | ||
6397 | /* | |
6398 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
6399 | * which stores all the remote IP addresses received via MAC/IP routes | |
6400 | * in this EVI | |
6401 | */ | |
6402 | memset(&tmp, 0, sizeof(struct evpn_remote_ip)); | |
6403 | ||
6404 | p = &bnc->prefix; | |
6405 | if (p->family == AF_INET) { | |
6406 | tmp.addr.ipa_type = IPADDR_V4; | |
6407 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
6408 | sizeof(struct in_addr)); | |
6409 | } else if (p->family == AF_INET6) { | |
6410 | tmp.addr.ipa_type = IPADDR_V6; | |
6411 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
6412 | sizeof(struct in6_addr)); | |
6413 | } else | |
6414 | return false; | |
6415 | ||
6416 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
6417 | return false; | |
6418 | ||
6419 | return true; | |
6420 | } | |
6421 | ||
6422 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
6423 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
6424 | struct ipaddr *addr, | |
6425 | bool resolve) | |
6426 | { | |
6427 | afi_t afi; | |
6428 | struct prefix p; | |
6429 | struct bgp_nexthop_cache *bnc; | |
6430 | struct bgp_nexthop_cache_head *tree = NULL; | |
6431 | ||
6432 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
6433 | return; | |
6434 | ||
6435 | memset(&p, 0, sizeof(struct prefix)); | |
6436 | ||
6437 | if (addr->ipa_type == IPADDR_V4) { | |
6438 | afi = AFI_IP; | |
6439 | p.family = AF_INET; | |
6440 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
6441 | sizeof(struct in_addr)); | |
6442 | p.prefixlen = IPV4_MAX_BITLEN; | |
6443 | } else if (addr->ipa_type == IPADDR_V6) { | |
6444 | afi = AFI_IP6; | |
6445 | p.family = AF_INET6; | |
6446 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
6447 | sizeof(struct in6_addr)); | |
6448 | p.prefixlen = IPV6_MAX_BITLEN; | |
6449 | } else | |
6450 | return; | |
6451 | ||
6452 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
6453 | bnc = bnc_find(tree, &p, 0); | |
6454 | ||
6455 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
6456 | return; | |
6457 | ||
6458 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
6459 | return; | |
6460 | ||
6461 | if (BGP_DEBUG(nht, NHT)) { | |
6462 | char buf[PREFIX2STR_BUFFER]; | |
6463 | ||
6464 | prefix2str(&bnc->prefix, buf, sizeof(buf)); | |
6465 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %s", | |
6466 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, | |
6467 | vpn->vni, (resolve ? "add" : "delete"), buf); | |
6468 | } | |
6469 | ||
6470 | /* | |
6471 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
6472 | * Set nexthop as valid only if it is already L3 reachable | |
6473 | */ | |
6474 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
6475 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6476 | bnc->flags |= BGP_NEXTHOP_VALID; | |
6477 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6478 | evaluate_paths(bnc); | |
6479 | } | |
6480 | ||
6481 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
6482 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
6483 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
6484 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6485 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6486 | evaluate_paths(bnc); | |
6487 | } | |
6488 | } | |
6489 | ||
dc6cef73 AD |
6490 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
6491 | void *arg) | |
6492 | { | |
6493 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6494 | struct bgp_dest *dest; | |
6495 | struct bgp_path_info *pi; | |
6496 | ||
6497 | bgp_evpn_remote_ip_hash_init(vpn); | |
6498 | ||
6499 | for (dest = bgp_table_top(vpn->route_table); dest; | |
6500 | dest = bgp_route_next(dest)) | |
6501 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6502 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
6503 | } | |
6504 | ||
6505 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
6506 | void *arg) | |
6507 | { | |
6508 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6509 | ||
6510 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
6511 | } |