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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 */ | |
5e53dce3 | 170 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
171 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
172 | return NULL; | |
173 | } | |
174 | ||
175 | return irt; | |
176 | } | |
177 | ||
178 | /* | |
179 | * Free the vrf import rt node | |
180 | */ | |
181 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
182 | { | |
5e53dce3 | 183 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 184 | |
5e53dce3 T |
185 | bgp_evpn = bgp_get_evpn(); |
186 | if (!bgp_evpn) { | |
e50f7cfd | 187 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 188 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
189 | return; |
190 | } | |
191 | ||
5e53dce3 | 192 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 193 | list_delete(&irt->vrfs); |
10ebe1ab MK |
194 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
195 | } | |
196 | ||
197 | /* | |
198 | * Function to lookup Import RT node - used to map a RT to set of | |
199 | * VNIs importing routes with that RT. | |
200 | */ | |
201 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
202 | { | |
5e53dce3 | 203 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
204 | struct vrf_irt_node *irt; |
205 | struct vrf_irt_node tmp; | |
206 | ||
5e53dce3 T |
207 | bgp_evpn = bgp_get_evpn(); |
208 | if (!bgp_evpn) { | |
f9b8094e T |
209 | flog_err( |
210 | EC_BGP_NO_DFLT, | |
211 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
212 | return NULL; |
213 | } | |
214 | ||
215 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
216 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 217 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
218 | return irt; |
219 | } | |
220 | ||
221 | /* | |
222 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
223 | */ | |
996c9314 | 224 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
225 | { |
226 | struct listnode *node = NULL, *nnode = NULL; | |
227 | struct bgp *tmp_bgp_vrf = NULL; | |
228 | ||
229 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
230 | if (tmp_bgp_vrf == bgp_vrf) | |
231 | return 1; | |
232 | } | |
233 | return 0; | |
234 | } | |
235 | ||
14c1a7bf | 236 | /* |
237 | * Make import route target hash key. | |
238 | */ | |
d8b87afe | 239 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 240 | { |
d8b87afe QY |
241 | const struct irt_node *irt = p; |
242 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
243 | |
244 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 245 | } |
246 | ||
247 | /* | |
248 | * Comparison function for import rt hash | |
249 | */ | |
74df8d6d | 250 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 251 | { |
d62a17ae | 252 | const struct irt_node *irt1 = p1; |
253 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 254 | |
d62a17ae | 255 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 256 | } |
257 | ||
7724c0a1 | 258 | /* |
128ea8ab | 259 | * Create a new import_rt |
260 | */ | |
d62a17ae | 261 | static struct irt_node *import_rt_new(struct bgp *bgp, |
262 | struct ecommunity_val *rt) | |
128ea8ab | 263 | { |
d62a17ae | 264 | struct irt_node *irt; |
128ea8ab | 265 | |
d62a17ae | 266 | if (!bgp) |
267 | return NULL; | |
128ea8ab | 268 | |
d62a17ae | 269 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 270 | |
d62a17ae | 271 | irt->rt = *rt; |
272 | irt->vnis = list_new(); | |
128ea8ab | 273 | |
d62a17ae | 274 | /* Add to hash */ |
275 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
276 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
277 | return NULL; | |
278 | } | |
128ea8ab | 279 | |
d62a17ae | 280 | return irt; |
128ea8ab | 281 | } |
282 | ||
283 | /* | |
284 | * Free the import rt node | |
7724c0a1 | 285 | */ |
d62a17ae | 286 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 287 | { |
d62a17ae | 288 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 289 | list_delete(&irt->vnis); |
d62a17ae | 290 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 291 | } |
292 | ||
14c1a7bf | 293 | /* |
128ea8ab | 294 | * Function to lookup Import RT node - used to map a RT to set of |
295 | * VNIs importing routes with that RT. | |
296 | */ | |
d62a17ae | 297 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
298 | struct ecommunity_val *rt) | |
128ea8ab | 299 | { |
d62a17ae | 300 | struct irt_node *irt; |
301 | struct irt_node tmp; | |
128ea8ab | 302 | |
d62a17ae | 303 | memset(&tmp, 0, sizeof(struct irt_node)); |
304 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
305 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
306 | return irt; | |
128ea8ab | 307 | } |
308 | ||
309 | /* | |
310 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
311 | */ | |
d62a17ae | 312 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 313 | { |
d62a17ae | 314 | struct listnode *node, *nnode; |
315 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 316 | |
d62a17ae | 317 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
318 | if (tmp_vpn == vpn) | |
319 | return 1; | |
320 | } | |
128ea8ab | 321 | |
d62a17ae | 322 | return 0; |
128ea8ab | 323 | } |
324 | ||
325 | /* | |
326 | * Compare Route Targets. | |
327 | */ | |
f4a5218d AK |
328 | int bgp_evpn_route_target_cmp(struct ecommunity *ecom1, |
329 | struct ecommunity *ecom2) | |
128ea8ab | 330 | { |
d62a17ae | 331 | if (ecom1 && !ecom2) |
332 | return -1; | |
128ea8ab | 333 | |
d62a17ae | 334 | if (!ecom1 && ecom2) |
335 | return 1; | |
128ea8ab | 336 | |
d62a17ae | 337 | if (!ecom1 && !ecom2) |
338 | return 0; | |
128ea8ab | 339 | |
d62a17ae | 340 | if (ecom1->str && !ecom2->str) |
341 | return -1; | |
128ea8ab | 342 | |
d62a17ae | 343 | if (!ecom1->str && ecom2->str) |
344 | return 1; | |
128ea8ab | 345 | |
d62a17ae | 346 | if (!ecom1->str && !ecom2->str) |
347 | return 0; | |
128ea8ab | 348 | |
d62a17ae | 349 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 350 | } |
351 | ||
f4a5218d | 352 | void bgp_evpn_xxport_delete_ecomm(void *val) |
987d8198 DS |
353 | { |
354 | struct ecommunity *ecomm = val; | |
355 | ecommunity_free(&ecomm); | |
356 | } | |
357 | ||
128ea8ab | 358 | /* |
359 | * Mask off global-admin field of specified extended community (RT), | |
360 | * just retain the local-admin field. | |
361 | */ | |
d62a17ae | 362 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
363 | struct ecommunity_val *src) | |
128ea8ab | 364 | { |
d7c0a89a | 365 | uint8_t type; |
128ea8ab | 366 | |
d62a17ae | 367 | type = src->val[0]; |
368 | dst->val[0] = 0; | |
369 | if (type == ECOMMUNITY_ENCODE_AS) { | |
370 | dst->val[2] = dst->val[3] = 0; | |
371 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
372 | || type == ECOMMUNITY_ENCODE_IP) { | |
373 | dst->val[2] = dst->val[3] = 0; | |
374 | dst->val[4] = dst->val[5] = 0; | |
375 | } | |
128ea8ab | 376 | } |
377 | ||
10ebe1ab MK |
378 | /* |
379 | * Map one RT to specified VRF. | |
380 | * bgp_vrf = BGP vrf instance | |
381 | */ | |
996c9314 | 382 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
383 | { |
384 | struct vrf_irt_node *irt = NULL; | |
385 | struct ecommunity_val eval_tmp; | |
386 | ||
387 | /* If using "automatic" RT, | |
388 | * we only care about the local-admin sub-field. | |
389 | * This is to facilitate using L3VNI(VRF-VNI) | |
390 | * as the RT for EBGP peering too. | |
391 | */ | |
392 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 393 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
394 | mask_ecom_global_admin(&eval_tmp, eval); |
395 | ||
396 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
397 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
398 | /* Already mapped. */ | |
399 | return; | |
10ebe1ab | 400 | |
e066d6d0 | 401 | if (!irt) |
10ebe1ab | 402 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
403 | |
404 | /* Add VRF to the list for this RT. */ | |
405 | listnode_add(irt->vrfs, bgp_vrf); | |
406 | } | |
407 | ||
408 | /* | |
409 | * Unmap specified VRF from specified RT. If there are no other | |
410 | * VRFs for this RT, then the RT hash is deleted. | |
411 | * bgp_vrf: BGP VRF specific instance | |
412 | */ | |
996c9314 | 413 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
414 | { |
415 | /* Delete VRF from list for this RT. */ | |
416 | listnode_delete(irt->vrfs, bgp_vrf); | |
417 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
418 | vrf_import_rt_free(irt); |
419 | } | |
420 | } | |
421 | ||
128ea8ab | 422 | /* |
423 | * Map one RT to specified VNI. | |
14c1a7bf | 424 | */ |
d62a17ae | 425 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
426 | struct ecommunity_val *eval) | |
128ea8ab | 427 | { |
d62a17ae | 428 | struct irt_node *irt; |
429 | struct ecommunity_val eval_tmp; | |
128ea8ab | 430 | |
d62a17ae | 431 | /* If using "automatic" RT, we only care about the local-admin |
432 | * sub-field. | |
433 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
434 | */ | |
435 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
436 | if (!is_import_rt_configured(vpn)) | |
437 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 438 | |
d62a17ae | 439 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 440 | if (irt) |
d62a17ae | 441 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
442 | /* Already mapped. */ | |
443 | return; | |
128ea8ab | 444 | |
d62a17ae | 445 | if (!irt) { |
446 | irt = import_rt_new(bgp, &eval_tmp); | |
447 | assert(irt); | |
448 | } | |
128ea8ab | 449 | |
d62a17ae | 450 | /* Add VNI to the hash list for this RT. */ |
451 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 452 | } |
453 | ||
454 | /* | |
455 | * Unmap specified VNI from specified RT. If there are no other | |
456 | * VNIs for this RT, then the RT hash is deleted. | |
457 | */ | |
d62a17ae | 458 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
459 | struct irt_node *irt) | |
14c1a7bf | 460 | { |
d62a17ae | 461 | /* Delete VNI from hash list for this RT. */ |
462 | listnode_delete(irt->vnis, vpn); | |
463 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 464 | import_rt_free(bgp, irt); |
465 | } | |
14c1a7bf | 466 | } |
467 | ||
0ca10580 | 468 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 469 | const struct prefix_evpn *p, |
0ca10580 CS |
470 | struct attr *attr, uint8_t flags) |
471 | { | |
472 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
473 | ||
474 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
475 | if (!bgp_vrf) | |
476 | return; | |
477 | ||
b96cafa3 CS |
478 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
479 | return; | |
480 | ||
481 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
482 | * in case of route is self MAC-IP, | |
483 | * advertise-pip and advertise-svi-ip features | |
484 | * are enabled. | |
485 | * Otherwise, for all host MAC-IP route's | |
27727001 | 486 | * copy anycast RMAC. |
b96cafa3 CS |
487 | */ |
488 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
489 | && bgp_vrf->evpn_info->advertise_pip && | |
490 | bgp_vrf->evpn_info->is_anycast_mac) { | |
491 | /* copy sys rmac */ | |
492 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
493 | ETH_ALEN); | |
494 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
495 | attr->mp_nexthop_global_in = | |
496 | bgp_vrf->evpn_info->pip_ip; | |
497 | } else | |
498 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 499 | } |
b96cafa3 | 500 | |
128ea8ab | 501 | /* |
502 | * Create RT extended community automatically from passed information: | |
503 | * of the form AS:VNI. | |
504 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
505 | * the need is to get a RT value that will be unique across different | |
506 | * VNIs but the same across routers (in the same AS) for a particular | |
507 | * VNI. | |
508 | */ | |
c581d8b0 | 509 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 510 | { |
d62a17ae | 511 | struct ecommunity_val eval; |
b90d4580 CS |
512 | struct ecommunity *ecomadd, *ecom; |
513 | bool ecom_found = false; | |
514 | struct listnode *node; | |
128ea8ab | 515 | |
bf1061d8 VB |
516 | if (bgp->advertise_autort_rfc8365) |
517 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 518 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 519 | |
d62a17ae | 520 | ecomadd = ecommunity_new(); |
1207a5bc | 521 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
522 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
523 | if (ecommunity_cmp(ecomadd, ecom)) | |
524 | ecom_found = true; | |
525 | ||
526 | if (!ecom_found) | |
527 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
528 | else |
529 | ecommunity_free(&ecomadd); | |
128ea8ab | 530 | } |
14c1a7bf | 531 | |
532 | /* | |
128ea8ab | 533 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
534 | * creation of a VNI. | |
535 | */ | |
d62a17ae | 536 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 537 | { |
d62a17ae | 538 | bgp_evpn_derive_auto_rd(bgp, vpn); |
539 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
540 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 541 | } |
542 | ||
1ec31309 | 543 | /* |
544 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
545 | */ | |
546 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
547 | { | |
548 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
549 | return; | |
550 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
551 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
552 | } | |
553 | ||
09319b4e DS |
554 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
555 | safi_t safi, | |
556 | const struct prefix_evpn *evp, | |
557 | struct prefix_rd *prd) | |
c44ab6f1 AK |
558 | { |
559 | struct prefix_evpn global_p; | |
560 | ||
561 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
562 | /* prefix in the global table doesn't include the VTEP-IP so | |
563 | * we need to create a different copy of the prefix | |
564 | */ | |
565 | evpn_type1_prefix_global_copy(&global_p, evp); | |
566 | evp = &global_p; | |
567 | } | |
568 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
569 | } | |
570 | ||
09319b4e DS |
571 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
572 | safi_t safi, | |
573 | const struct prefix_evpn *evp, | |
574 | struct prefix_rd *prd) | |
c44ab6f1 AK |
575 | { |
576 | struct prefix_evpn global_p; | |
577 | ||
578 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
579 | /* prefix in the global table doesn't include the VTEP-IP so | |
580 | * we need to create a different copy of the prefix | |
581 | */ | |
582 | evpn_type1_prefix_global_copy(&global_p, evp); | |
583 | evp = &global_p; | |
584 | } | |
585 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
586 | } | |
587 | ||
128ea8ab | 588 | /* |
589 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 590 | */ |
d62a17ae | 591 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 592 | const struct prefix_evpn *p, |
d62a17ae | 593 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 594 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 595 | { |
596 | struct stream *s; | |
0ffd0fb5 | 597 | uint16_t ipa_len; |
c44ab6f1 | 598 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 599 | |
600 | /* Check socket. */ | |
601 | if (!zclient || zclient->sock < 0) | |
602 | return 0; | |
603 | ||
604 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
605 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
606 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
607 | zlog_debug( |
608 | "%s: No zebra instance to talk to, not installing remote macip", | |
609 | __func__); | |
d62a17ae | 610 | return 0; |
bb4ef1ae | 611 | } |
c44ab6f1 AK |
612 | |
613 | if (!esi) | |
614 | esi = zero_esi; | |
d62a17ae | 615 | s = zclient->obuf; |
616 | stream_reset(s); | |
617 | ||
996c9314 LB |
618 | zclient_create_header( |
619 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
620 | bgp->vrf_id); | |
d62a17ae | 621 | stream_putl(s, vpn->vni); |
3714a385 | 622 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 623 | /* IP address length and IP address, if any. */ |
3714a385 | 624 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 625 | stream_putw(s, 0); |
d62a17ae | 626 | else { |
3714a385 | 627 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 628 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 629 | stream_putw(s, ipa_len); |
3714a385 | 630 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 631 | } |
9c7edc03 AK |
632 | /* If the ESI is valid that becomes the nexthop; tape out the |
633 | * VTEP-IP for that case | |
c44ab6f1 | 634 | */ |
9c7edc03 | 635 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 636 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
637 | else |
638 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 639 | |
ead40654 | 640 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 641 | /* Also TX the sequence number of the best route. */ |
642 | if (add) { | |
ead40654 | 643 | stream_putc(s, flags); |
f07e1c99 | 644 | stream_putl(s, seq); |
c44ab6f1 | 645 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 646 | } |
d62a17ae | 647 | |
648 | stream_putw_at(s, 0, stream_get_endp(s)); | |
649 | ||
650 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 651 | zlog_debug( |
c0d72166 | 652 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4", |
996c9314 | 653 | add ? "ADD" : "DEL", vpn->vni, |
c0d72166 DS |
654 | &p->prefix.macip_addr.mac, &p->prefix.macip_addr.ip, |
655 | flags, seq, &remote_vtep_ip); | |
d62a17ae | 656 | |
23aa35ad AK |
657 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
658 | esi); | |
659 | ||
d62a17ae | 660 | return zclient_send_message(zclient); |
7ef5a232 | 661 | } |
b18825eb | 662 | |
128ea8ab | 663 | /* |
664 | * Add (update) or delete remote VTEP from zebra. | |
665 | */ | |
d62a17ae | 666 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
667 | const struct prefix_evpn *p, |
668 | int flood_control, int add) | |
128ea8ab | 669 | { |
d62a17ae | 670 | struct stream *s; |
128ea8ab | 671 | |
d62a17ae | 672 | /* Check socket. */ |
673 | if (!zclient || zclient->sock < 0) | |
674 | return 0; | |
128ea8ab | 675 | |
d62a17ae | 676 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
677 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
678 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
679 | zlog_debug( |
680 | "%s: No zebra instance to talk to, not installing remote vtep", | |
681 | __func__); | |
d62a17ae | 682 | return 0; |
bb4ef1ae | 683 | } |
128ea8ab | 684 | |
d62a17ae | 685 | s = zclient->obuf; |
686 | stream_reset(s); | |
128ea8ab | 687 | |
996c9314 LB |
688 | zclient_create_header( |
689 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
690 | bgp->vrf_id); | |
d62a17ae | 691 | stream_putl(s, vpn->vni); |
3714a385 | 692 | if (is_evpn_prefix_ipaddr_v4(p)) |
693 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
694 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 695 | flog_err( |
e50f7cfd | 696 | EC_BGP_VTEP_INVALID, |
d62a17ae | 697 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
698 | add ? "ADD" : "DEL", vpn->vni); | |
699 | return -1; | |
700 | } | |
b16dd019 | 701 | stream_putl(s, flood_control); |
128ea8ab | 702 | |
d62a17ae | 703 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 704 | |
d62a17ae | 705 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 706 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 707 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 708 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 709 | |
23aa35ad AK |
710 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
711 | ||
d62a17ae | 712 | return zclient_send_message(zclient); |
128ea8ab | 713 | } |
714 | ||
342dd0c6 | 715 | /* |
716 | * Build extended communities for EVPN prefix route. | |
717 | */ | |
718 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
719 | struct attr *attr) | |
720 | { | |
721 | struct ecommunity ecom_encap; | |
342dd0c6 | 722 | struct ecommunity_val eval; |
723 | struct ecommunity_val eval_rmac; | |
724 | bgp_encap_types tnl_type; | |
725 | struct listnode *node, *nnode; | |
726 | struct ecommunity *ecom; | |
fab92da7 | 727 | struct ecommunity *old_ecom; |
342dd0c6 | 728 | struct list *vrf_export_rtl = NULL; |
729 | ||
730 | /* Encap */ | |
731 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
732 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
733 | encode_encap_extcomm(tnl_type, &eval); | |
734 | ecom_encap.size = 1; | |
34540b0d | 735 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 736 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 737 | |
738 | /* Add Encap */ | |
b53e67a3 DA |
739 | if (bgp_attr_get_ecommunity(attr)) { |
740 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 741 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
742 | if (!old_ecom->refcnt) | |
743 | ecommunity_free(&old_ecom); | |
744 | } else | |
745 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 746 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 747 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 748 | |
749 | /* Add the export RTs for L3VNI/VRF */ | |
750 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f | 751 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
752 | bgp_attr_set_ecommunity( |
753 | attr, | |
754 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
342dd0c6 | 755 | |
756 | /* add the router mac extended community */ | |
757 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 758 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
759 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
760 | true, true); | |
342dd0c6 | 761 | } |
762 | ||
763 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
764 | } | |
765 | ||
128ea8ab | 766 | /* |
1ec31309 | 767 | * Build extended communities for EVPN route. |
768 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
769 | * and ENCAP extended communities are applicable for all routes. | |
770 | * The default gateway extended community and MAC mobility (sticky) extended | |
771 | * community are added as needed based on passed settings - only for type-2 | |
772 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
773 | * added, if present, based on passed settings - only for non-link-local | |
774 | * type-2 routes. | |
128ea8ab | 775 | */ |
7ec156a9 | 776 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 777 | int add_l3_ecomm) |
128ea8ab | 778 | { |
d62a17ae | 779 | struct ecommunity ecom_encap; |
780 | struct ecommunity ecom_sticky; | |
ead40654 | 781 | struct ecommunity ecom_default_gw; |
68e33151 | 782 | struct ecommunity ecom_na; |
d62a17ae | 783 | struct ecommunity_val eval; |
784 | struct ecommunity_val eval_sticky; | |
ead40654 | 785 | struct ecommunity_val eval_default_gw; |
bc59a672 | 786 | struct ecommunity_val eval_rmac; |
68e33151 | 787 | struct ecommunity_val eval_na; |
9c7edc03 | 788 | bool proxy; |
68e33151 | 789 | |
d62a17ae | 790 | bgp_encap_types tnl_type; |
791 | struct listnode *node, *nnode; | |
792 | struct ecommunity *ecom; | |
d7c0a89a | 793 | uint32_t seqnum; |
7a3e76f1 | 794 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 795 | |
d62a17ae | 796 | /* Encap */ |
797 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
798 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
799 | encode_encap_extcomm(tnl_type, &eval); | |
800 | ecom_encap.size = 1; | |
34540b0d | 801 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 802 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 803 | |
d62a17ae | 804 | /* Add Encap */ |
b53e67a3 | 805 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 806 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 807 | |
7a3e76f1 | 808 | /* Add the export RTs for L2VNI */ |
d62a17ae | 809 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
810 | bgp_attr_set_ecommunity( |
811 | attr, | |
812 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 813 | |
1ec31309 | 814 | /* Add the export RTs for L3VNI if told to - caller determines |
815 | * when this should be done. | |
523cafc4 | 816 | */ |
1ec31309 | 817 | if (add_l3_ecomm) { |
7ec156a9 MK |
818 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
819 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
820 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
821 | ecom)) | |
b53e67a3 DA |
822 | bgp_attr_set_ecommunity( |
823 | attr, | |
824 | ecommunity_merge( | |
825 | bgp_attr_get_ecommunity(attr), | |
826 | ecom)); | |
7ec156a9 | 827 | } |
f1f8b53c | 828 | } |
7a3e76f1 | 829 | |
1ec31309 | 830 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 831 | if (attr->sticky) { |
832 | seqnum = 0; | |
833 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
834 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
835 | ecom_sticky.size = 1; | |
34540b0d | 836 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 837 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
838 | bgp_attr_set_ecommunity( |
839 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
840 | &ecom_sticky)); | |
d62a17ae | 841 | } |
c85c03c7 | 842 | |
1ec31309 | 843 | /* Add RMAC, if told to. */ |
844 | if (add_l3_ecomm) { | |
bc59a672 | 845 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
846 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
847 | true, true); | |
bc59a672 MK |
848 | } |
849 | ||
1ec31309 | 850 | /* Add default gateway, if needed. */ |
ead40654 MK |
851 | if (attr->default_gw) { |
852 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
853 | encode_default_gw_extcomm(&eval_default_gw); | |
854 | ecom_default_gw.size = 1; | |
34540b0d | 855 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 856 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
857 | bgp_attr_set_ecommunity( |
858 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
859 | &ecom_default_gw)); | |
ead40654 MK |
860 | } |
861 | ||
9c7edc03 AK |
862 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
863 | if (attr->router_flag || proxy) { | |
68e33151 | 864 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 865 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 866 | ecom_na.size = 1; |
34540b0d | 867 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 868 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
869 | bgp_attr_set_ecommunity( |
870 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
871 | &ecom_na)); | |
68e33151 CS |
872 | } |
873 | ||
d62a17ae | 874 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 875 | } |
876 | ||
877 | /* | |
878 | * Add MAC mobility extended community to attribute. | |
879 | */ | |
d7c0a89a | 880 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 881 | { |
882 | struct ecommunity ecom_tmp; | |
883 | struct ecommunity_val eval; | |
d7c0a89a | 884 | uint8_t *ecom_val_ptr; |
f6e07e1b | 885 | uint32_t i; |
d7c0a89a | 886 | uint8_t *pnt; |
d62a17ae | 887 | int type = 0; |
888 | int sub_type = 0; | |
b53e67a3 | 889 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 890 | |
891 | /* Build MM */ | |
892 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
893 | ||
894 | /* Find current MM ecommunity */ | |
421bb26a | 895 | ecom_val_ptr = NULL; |
d62a17ae | 896 | |
b53e67a3 DA |
897 | if (ecomm) { |
898 | for (i = 0; i < ecomm->size; i++) { | |
899 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 900 | type = *pnt++; |
901 | sub_type = *pnt++; | |
902 | ||
903 | if (type == ECOMMUNITY_ENCODE_EVPN | |
904 | && sub_type | |
905 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 906 | ecom_val_ptr = |
b53e67a3 | 907 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 908 | break; |
909 | } | |
910 | } | |
911 | } | |
912 | ||
913 | /* Update the existing MM ecommunity */ | |
421bb26a | 914 | if (ecom_val_ptr) { |
b53e67a3 | 915 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 916 | } |
917 | /* Add MM to existing */ | |
918 | else { | |
919 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
920 | ecom_tmp.size = 1; | |
34540b0d | 921 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 922 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 923 | |
b53e67a3 DA |
924 | if (ecomm) |
925 | bgp_attr_set_ecommunity( | |
926 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 927 | else |
b53e67a3 DA |
928 | bgp_attr_set_ecommunity(attr, |
929 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 930 | } |
128ea8ab | 931 | } |
932 | ||
933 | /* Install EVPN route into zebra. */ | |
d62a17ae | 934 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
935 | const struct prefix_evpn *p, |
936 | struct bgp_path_info *pi) | |
128ea8ab | 937 | { |
d62a17ae | 938 | int ret; |
d594a14c | 939 | uint8_t flags; |
b16dd019 | 940 | int flood_control; |
9c7edc03 | 941 | uint32_t seq; |
128ea8ab | 942 | |
d594a14c AK |
943 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
944 | flags = 0; | |
9c7edc03 AK |
945 | |
946 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
947 | if (pi->attr->sticky) | |
948 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
949 | if (pi->attr->default_gw) | |
950 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
951 | if (is_evpn_prefix_ipaddr_v6(p) && | |
952 | pi->attr->router_flag) | |
953 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
954 | ||
955 | seq = mac_mobility_seqnum(pi->attr); | |
956 | /* if local ES notify zebra that this is a sync path */ | |
957 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
958 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
959 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
960 | SET_FLAG(flags, | |
961 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
962 | } | |
963 | } else { | |
964 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
965 | return 0; | |
966 | ||
967 | /* if a local path is being turned around and sent | |
968 | * to zebra it is because it is a sync path on | |
969 | * a local ES | |
970 | */ | |
971 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
972 | /* supply the highest peer seq number to zebra | |
973 | * for MM seq syncing | |
974 | */ | |
975 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
976 | /* if any of the paths from the peer have the ROUTER | |
977 | * flag set install the local entry as a router entry | |
978 | */ | |
979 | if (is_evpn_prefix_ipaddr_v6(p) && | |
980 | (pi->attr->es_flags & | |
981 | ATTR_ES_PEER_ROUTER)) | |
982 | SET_FLAG(flags, | |
983 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
984 | ||
985 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
986 | SET_FLAG(flags, | |
987 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
988 | } | |
989 | ||
d594a14c | 990 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
991 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
992 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
993 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
994 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 995 | } else { |
2a3f51cf | 996 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
997 | case PMSI_TNLTYPE_INGR_REPL: |
998 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
999 | break; | |
1000 | ||
1001 | case PMSI_TNLTYPE_PIM_SM: | |
1002 | flood_control = VXLAN_FLOOD_PIM_SM; | |
1003 | break; | |
1004 | ||
1005 | default: | |
1006 | flood_control = VXLAN_FLOOD_DISABLED; | |
1007 | break; | |
1008 | } | |
1009 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1010 | } |
128ea8ab | 1011 | |
d62a17ae | 1012 | return ret; |
128ea8ab | 1013 | } |
1014 | ||
1015 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1016 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1017 | const struct prefix_evpn *p, |
d62a17ae | 1018 | struct in_addr remote_vtep_ip) |
128ea8ab | 1019 | { |
d62a17ae | 1020 | int ret; |
128ea8ab | 1021 | |
d62a17ae | 1022 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1023 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1024 | 0, 0, 0, NULL); |
1025 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1026 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1027 | else |
b16dd019 AK |
1028 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1029 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1030 | |
d62a17ae | 1031 | return ret; |
128ea8ab | 1032 | } |
1033 | ||
1034 | /* | |
1035 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1036 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1037 | * from peers. | |
1038 | */ | |
d62a17ae | 1039 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1040 | struct bgp_dest *dest, |
9c7edc03 AK |
1041 | struct bgp_path_info *old_local, |
1042 | struct bgp_path_info *new_select) | |
128ea8ab | 1043 | { |
9bcb3eef | 1044 | struct bgp_dest *global_dest; |
40381db7 | 1045 | struct bgp_path_info *pi; |
d62a17ae | 1046 | afi_t afi = AFI_L2VPN; |
1047 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1048 | |
9c7edc03 | 1049 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1050 | char esi_buf[ESI_STR_LEN]; |
1051 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1052 | struct prefix_evpn *evp = |
1053 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1054 | |
2dbe669b DA |
1055 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1056 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1057 | sizeof(esi_buf)), | |
1058 | new_select ? esi_to_str(&new_select->attr->esi, | |
1059 | esi_buf2, sizeof(esi_buf2)) | |
1060 | : ""); | |
9c7edc03 AK |
1061 | } |
1062 | ||
d62a17ae | 1063 | /* Locate route node in the global EVPN routing table. Note that |
1064 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1065 | * L3VPN routes. | |
1066 | */ | |
c44ab6f1 AK |
1067 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1068 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1069 | &vpn->prd); | |
9bcb3eef | 1070 | if (global_dest) { |
d62a17ae | 1071 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1072 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1073 | |
d62a17ae | 1074 | /* Schedule for processing - withdraws to peers happen from |
1075 | * this table. | |
1076 | */ | |
40381db7 | 1077 | if (pi) |
9bcb3eef DS |
1078 | bgp_process(bgp, global_dest, afi, safi); |
1079 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1080 | } |
128ea8ab | 1081 | |
d62a17ae | 1082 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1083 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1084 | } |
1085 | ||
1086 | /* | |
1087 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1088 | * if appropriate. | |
c44ab6f1 | 1089 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1090 | */ |
c44ab6f1 | 1091 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1092 | struct bgp_dest *dest) |
d62a17ae | 1093 | { |
4b7e6066 DS |
1094 | struct bgp_path_info *old_select, *new_select; |
1095 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1096 | afi_t afi = AFI_L2VPN; |
1097 | safi_t safi = SAFI_EVPN; | |
1098 | int ret = 0; | |
1099 | ||
1100 | /* Compute the best path. */ | |
9bcb3eef | 1101 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1102 | afi, safi); |
1103 | old_select = old_and_new.old; | |
1104 | new_select = old_and_new.new; | |
1105 | ||
1106 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1107 | * update to zebra RIB. |
1108 | * Remote routes and SYNC route (i.e. local routes with | |
1109 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1110 | * change. | |
d62a17ae | 1111 | */ |
1112 | if (old_select && old_select == new_select | |
1113 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1114 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1115 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1116 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1117 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1118 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1119 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1120 | ret = evpn_zebra_install( |
9bcb3eef DS |
1121 | bgp, vpn, |
1122 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1123 | dest), | |
d594a14c | 1124 | old_select); |
1defdda8 | 1125 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1126 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1127 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1128 | return ret; |
1129 | } | |
1130 | ||
1131 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1132 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1133 | |
1134 | /* bestpath has changed; update relevant fields and install or uninstall | |
1135 | * into the zebra RIB. | |
1136 | */ | |
1137 | if (old_select || new_select) | |
9bcb3eef | 1138 | bgp_bump_version(dest); |
d62a17ae | 1139 | |
1140 | if (old_select) | |
9bcb3eef | 1141 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1142 | if (new_select) { |
9bcb3eef DS |
1143 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1144 | bgp_path_info_unset_flag(dest, new_select, | |
1145 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1146 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1147 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1148 | } |
1149 | ||
9c7edc03 AK |
1150 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1151 | * to zebra | |
1152 | */ | |
d62a17ae | 1153 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1154 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1155 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1156 | ret = evpn_zebra_install( |
9bcb3eef DS |
1157 | bgp, vpn, |
1158 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1159 | new_select); |
d594a14c | 1160 | |
d62a17ae | 1161 | /* If an old best existed and it was a "local" route, the only |
1162 | * reason | |
1163 | * it would be supplanted is due to MAC mobility procedures. So, | |
1164 | * we | |
1165 | * need to do an implicit delete and withdraw that route from | |
1166 | * peers. | |
1167 | */ | |
9c7edc03 AK |
1168 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1169 | old_select && old_select->peer == bgp->peer_self | |
1170 | && old_select->type == ZEBRA_ROUTE_BGP | |
1171 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1172 | && vpn) | |
1173 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1174 | old_select, new_select); | |
d62a17ae | 1175 | } else { |
1176 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1177 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1178 | ret = evpn_zebra_uninstall( |
1179 | bgp, vpn, | |
9bcb3eef DS |
1180 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1181 | dest), | |
b54892e0 | 1182 | old_select->attr->nexthop); |
d62a17ae | 1183 | } |
1184 | ||
1185 | /* Clear any route change flags. */ | |
9bcb3eef | 1186 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1187 | |
18ee8310 | 1188 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1189 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1190 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1191 | |
1192 | return ret; | |
128ea8ab | 1193 | } |
1194 | ||
9c7edc03 AK |
1195 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1196 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1197 | { |
40381db7 | 1198 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1199 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1200 | |
9bcb3eef | 1201 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1202 | tmp_pi = tmp_pi->next) { |
1203 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1204 | local_pi = tmp_pi; |
9c7edc03 AK |
1205 | break; |
1206 | } | |
d62a17ae | 1207 | } |
c85c03c7 | 1208 | |
9c7edc03 | 1209 | return local_pi; |
c85c03c7 | 1210 | } |
1211 | ||
5e53dce3 | 1212 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1213 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1214 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1215 | struct attr *attr, int *route_changed) |
342dd0c6 | 1216 | { |
1217 | struct attr *attr_new = NULL; | |
40381db7 | 1218 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1219 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1220 | struct bgp_path_info *local_pi = NULL; |
1221 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1222 | |
5424b7ba | 1223 | *route_changed = 0; |
342dd0c6 | 1224 | /* locate the local route entry if any */ |
9bcb3eef | 1225 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1226 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1227 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1228 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1229 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1230 | local_pi = tmp_pi; | |
342dd0c6 | 1231 | } |
1232 | ||
2bb9eff4 | 1233 | /* |
0437e105 | 1234 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1235 | * Otherwise see if route attr has changed |
523cafc4 | 1236 | */ |
40381db7 | 1237 | if (!local_pi) { |
342dd0c6 | 1238 | |
5424b7ba MK |
1239 | /* route has changed as this is the first entry */ |
1240 | *route_changed = 1; | |
1241 | ||
342dd0c6 | 1242 | /* Add (or update) attribute to hash. */ |
1243 | attr_new = bgp_attr_intern(attr); | |
1244 | ||
1245 | /* create the route info from attribute */ | |
40381db7 | 1246 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1247 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1248 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1249 | |
b57ba6d2 | 1250 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1251 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1252 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1253 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1254 | pi->extra->num_labels = 1; | |
342dd0c6 | 1255 | |
1256 | /* add the route entry to route node*/ | |
9bcb3eef | 1257 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1258 | } else { |
1259 | ||
40381db7 DS |
1260 | tmp_pi = local_pi; |
1261 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1262 | |
1263 | /* attribute changed */ | |
1264 | *route_changed = 1; | |
1265 | ||
342dd0c6 | 1266 | /* The attribute has changed. */ |
1267 | /* Add (or update) attribute to hash. */ | |
1268 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1269 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1270 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1271 | |
1272 | /* Restore route, if needed. */ | |
40381db7 | 1273 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1274 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1275 | |
1276 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1277 | bgp_attr_unintern(&tmp_pi->attr); |
1278 | tmp_pi->attr = attr_new; | |
1279 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1280 | } |
1281 | } | |
1282 | return 0; | |
1283 | } | |
1284 | ||
1285 | /* update evpn type-5 route entry */ | |
996c9314 | 1286 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1287 | struct attr *src_attr, afi_t src_afi, |
1288 | safi_t src_safi) | |
342dd0c6 | 1289 | { |
1290 | afi_t afi = AFI_L2VPN; | |
1291 | safi_t safi = SAFI_EVPN; | |
1292 | struct attr attr; | |
9bcb3eef | 1293 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1294 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1295 | int route_changed = 0; |
342dd0c6 | 1296 | |
5e53dce3 T |
1297 | bgp_evpn = bgp_get_evpn(); |
1298 | if (!bgp_evpn) | |
faafdfa8 | 1299 | return 0; |
342dd0c6 | 1300 | |
2f69f6d3 | 1301 | /* Build path attribute for this route - use the source attr, if |
1302 | * present, else treat as locally originated. | |
1303 | */ | |
1304 | if (src_attr) | |
6f4f49b2 | 1305 | attr = *src_attr; |
2f69f6d3 | 1306 | else { |
1307 | memset(&attr, 0, sizeof(struct attr)); | |
1308 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1309 | } | |
5394a276 | 1310 | |
5394a276 CS |
1311 | /* Advertise Primary IP (PIP) is enabled, send individual |
1312 | * IP (default instance router-id) as nexthop. | |
1313 | * PIP is disabled or vrr interface is not present | |
27727001 | 1314 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1315 | */ |
1316 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1317 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1318 | attr.nexthop = bgp_vrf->originator_ip; | |
1319 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1320 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1321 | } else { |
27727001 CS |
1322 | /* copy sys rmac */ |
1323 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1324 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1325 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1326 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1327 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1328 | if (bgp_debug_zebra(NULL)) |
1329 | zlog_debug( | |
1330 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1331 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1332 | } |
1333 | ||
c0d72166 DS |
1334 | if (bgp_debug_zebra(NULL)) |
1335 | zlog_debug( | |
1336 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1337 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1338 | &attr.nexthop); | |
5394a276 | 1339 | |
342dd0c6 | 1340 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1341 | |
6c995628 AD |
1342 | if (src_afi == AFI_IP6 && |
1343 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1344 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1345 | if (src_attr && | |
1346 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1347 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1348 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1349 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1350 | &src_attr->mp_nexthop_global, |
1351 | sizeof(struct in6_addr)); | |
1352 | } | |
1353 | } else if (src_afi == AFI_IP && | |
1354 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1355 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1356 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1357 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1358 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1359 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1360 | &src_attr->nexthop, sizeof(struct in_addr)); |
1361 | } | |
1362 | } | |
1363 | ||
342dd0c6 | 1364 | /* Setup RT and encap extended community */ |
1365 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1366 | ||
1367 | /* get the route node in global table */ | |
c44ab6f1 AK |
1368 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1369 | (const struct prefix_evpn *)evp, | |
1370 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1371 | assert(dest); |
342dd0c6 | 1372 | |
1373 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1374 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1375 | &route_changed); |
342dd0c6 | 1376 | |
1377 | /* schedule for processing and unlock node */ | |
5424b7ba | 1378 | if (route_changed) { |
9bcb3eef DS |
1379 | bgp_process(bgp_evpn, dest, afi, safi); |
1380 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1381 | } |
342dd0c6 | 1382 | |
1383 | /* uninten temporary */ | |
5ee65f6f | 1384 | if (!src_attr) |
1385 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1386 | return 0; |
1387 | } | |
1388 | ||
9c7edc03 | 1389 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1390 | struct bgp_dest *dest, uint32_t loc_seq, |
1391 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1392 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1393 | { |
1394 | struct bgp_path_info *tmp_pi; | |
1395 | struct bgp_path_info *second_best_path = NULL; | |
1396 | uint32_t tmp_mm_seq = 0; | |
1397 | esi_t *tmp_esi; | |
1398 | int paths_eq; | |
1399 | ||
1400 | /* find the best non-local path. a local path can only be present | |
1401 | * as best path | |
1402 | */ | |
09319b4e DS |
1403 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1404 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1405 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1406 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1407 | continue; | |
1408 | ||
1409 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1410 | second_best_path, &paths_eq)) | |
1411 | second_best_path = tmp_pi; | |
1412 | } | |
1413 | ||
1414 | if (!second_best_path) | |
1415 | return; | |
1416 | ||
1417 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1418 | /* if this has the same ES desination as the local path | |
1419 | * it is a sync path | |
1420 | */ | |
1421 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1422 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1423 | if (tmp_mm_seq < loc_seq) | |
1424 | return; | |
1425 | ||
1426 | /* we have a non-proxy path from the ES peer. */ | |
1427 | if (second_best_path->attr->es_flags & | |
1428 | ATTR_ES_PROXY_ADVERT) { | |
1429 | *proxy_from_peer = true; | |
1430 | } else { | |
1431 | *active_on_peer = true; | |
1432 | } | |
1433 | ||
1434 | if (second_best_path->attr->router_flag) | |
1435 | *peer_router = true; | |
1436 | ||
1437 | /* we use both proxy and non-proxy imports to | |
1438 | * determine the max sync sequence | |
1439 | */ | |
1440 | if (tmp_mm_seq > *max_sync_seq) | |
1441 | *max_sync_seq = tmp_mm_seq; | |
1442 | } | |
1443 | } | |
1444 | ||
1445 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1446 | * This is need for MM sequence number syncing and proxy advertisement. | |
1447 | * Note: The local path can only exist as a best path in the | |
1448 | * VPN route table. It will take precedence over all sync paths. | |
1449 | */ | |
1450 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1451 | struct bgp_dest *dest, |
1452 | struct attr *attr, | |
1453 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1454 | { |
1455 | esi_t *esi; | |
752eed47 DS |
1456 | struct prefix_evpn *evp = |
1457 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1458 | |
1459 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1460 | return; | |
1461 | ||
1462 | esi = bgp_evpn_attr_get_esi(attr); | |
1463 | if (bgp_evpn_is_esi_valid(esi)) { | |
1464 | if (setup_sync) { | |
1465 | uint32_t max_sync_seq = 0; | |
1466 | bool active_on_peer = false; | |
1467 | bool peer_router = false; | |
1468 | bool proxy_from_peer = false; | |
1469 | ||
09319b4e DS |
1470 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1471 | &max_sync_seq, &active_on_peer, | |
1472 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1473 | attr->mm_sync_seqnum = max_sync_seq; |
1474 | if (active_on_peer) | |
1475 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1476 | else | |
1477 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1478 | if (proxy_from_peer) | |
1479 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1480 | else | |
1481 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1482 | if (peer_router) | |
1483 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1484 | else | |
1485 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1486 | ||
1487 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1488 | char esi_buf[ESI_STR_LEN]; |
1489 | ||
2dbe669b DA |
1490 | zlog_debug( |
1491 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1492 | evp, | |
9c7edc03 | 1493 | esi_to_str(esi, esi_buf, |
2dbe669b | 1494 | sizeof(esi_buf)), |
9c7edc03 | 1495 | max_sync_seq, |
2dbe669b DA |
1496 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1497 | ? "peer-active " | |
1498 | : "", | |
1499 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1500 | ? "peer-proxy " | |
1501 | : "", | |
1502 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1503 | ? "peer-router " | |
1504 | : ""); | |
9c7edc03 AK |
1505 | } |
1506 | } | |
1507 | } else { | |
1508 | attr->mm_sync_seqnum = 0; | |
1509 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1510 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1511 | } | |
1512 | } | |
1513 | ||
128ea8ab | 1514 | /* |
1515 | * Create or update EVPN route entry. This could be in the VNI route table | |
1516 | * or the global route table. | |
1517 | */ | |
d62a17ae | 1518 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1519 | afi_t afi, safi_t safi, |
1520 | struct bgp_dest *dest, struct attr *attr, | |
1521 | int add, struct bgp_path_info **pi, | |
1522 | uint8_t flags, uint32_t seq, bool vpn_rt, | |
9c7edc03 | 1523 | bool *old_is_sync) |
d62a17ae | 1524 | { |
40381db7 DS |
1525 | struct bgp_path_info *tmp_pi; |
1526 | struct bgp_path_info *local_pi; | |
d62a17ae | 1527 | struct attr *attr_new; |
b57ba6d2 | 1528 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1529 | uint32_t num_labels = 1; |
d62a17ae | 1530 | int route_change = 1; |
d7c0a89a | 1531 | uint8_t sticky = 0; |
b54892e0 | 1532 | const struct prefix_evpn *evp; |
d62a17ae | 1533 | |
40381db7 | 1534 | *pi = NULL; |
9bcb3eef | 1535 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1536 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1537 | |
f07e1c99 | 1538 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1539 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1540 | |
1541 | /* If route doesn't exist already, create a new one, if told to. | |
1542 | * Otherwise act based on whether the attributes of the route have | |
1543 | * changed or not. | |
1544 | */ | |
40381db7 | 1545 | if (!local_pi && !add) |
d62a17ae | 1546 | return 0; |
1547 | ||
9c7edc03 AK |
1548 | if (old_is_sync && local_pi) |
1549 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1550 | ||
1551 | /* if a local path is being added with a non-zero esi look | |
1552 | * for SYNC paths from ES peers and bubble up the sync-info | |
1553 | */ | |
26c03e43 | 1554 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt); |
9c7edc03 | 1555 | |
f07e1c99 | 1556 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1557 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1558 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1559 | |
40381db7 | 1560 | if (!local_pi) { |
d62a17ae | 1561 | /* Add (or update) attribute to hash. */ |
1562 | attr_new = bgp_attr_intern(attr); | |
1563 | ||
1564 | /* Extract MAC mobility sequence number, if any. */ | |
1565 | attr_new->mm_seqnum = | |
1566 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1567 | attr_new->sticky = sticky; | |
1568 | ||
1569 | /* Create new route with its attribute. */ | |
40381db7 | 1570 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1571 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1572 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1573 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1574 | |
1575 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1576 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1577 | |
1578 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1579 | * Only attach second label if we are advertising two labels for | |
1580 | * type-2 routes. | |
1581 | */ | |
996c9314 LB |
1582 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1583 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1584 | vni_t l3vni; |
1585 | ||
1586 | l3vni = bgpevpn_get_l3vni(vpn); | |
1587 | if (l3vni) { | |
1588 | vni2label(l3vni, &label[1]); | |
1589 | num_labels++; | |
1590 | } | |
1591 | } | |
d62a17ae | 1592 | |
40381db7 DS |
1593 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1594 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1595 | /* Mark route as self type-2 route */ |
1596 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1597 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1598 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1599 | } else { |
40381db7 DS |
1600 | tmp_pi = local_pi; |
1601 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1602 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1603 | route_change = 0; |
1604 | else { | |
c48d9f5f MK |
1605 | /* |
1606 | * The attributes have changed, type-2 routes needs to | |
1607 | * be advertised with right labels. | |
1608 | */ | |
1609 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1610 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1611 | && CHECK_FLAG(vpn->flags, | |
1612 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1613 | vni_t l3vni; |
1614 | ||
1615 | l3vni = bgpevpn_get_l3vni(vpn); | |
1616 | if (l3vni) { | |
1617 | vni2label(l3vni, &label[1]); | |
1618 | num_labels++; | |
1619 | } | |
1620 | } | |
40381db7 DS |
1621 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1622 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1623 | |
d62a17ae | 1624 | /* The attribute has changed. */ |
1625 | /* Add (or update) attribute to hash. */ | |
1626 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1627 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1628 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1629 | |
f07e1c99 | 1630 | /* Extract MAC mobility sequence number, if any. */ |
1631 | attr_new->mm_seqnum = | |
1632 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1633 | attr_new->sticky = sticky; | |
1634 | ||
d62a17ae | 1635 | /* Restore route, if needed. */ |
40381db7 | 1636 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1637 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1638 | |
1639 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1640 | bgp_attr_unintern(&tmp_pi->attr); |
1641 | tmp_pi->attr = attr_new; | |
1642 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1643 | } |
1644 | } | |
1645 | ||
58bff4d1 AK |
1646 | /* local MAC-IP routes in the VNI table are linked to |
1647 | * the destination ES | |
26c03e43 AK |
1648 | */ |
1649 | if (route_change && vpn_rt | |
1650 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1651 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1652 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1653 | ||
d62a17ae | 1654 | /* Return back the route entry. */ |
40381db7 | 1655 | *pi = tmp_pi; |
d62a17ae | 1656 | return route_change; |
128ea8ab | 1657 | } |
1658 | ||
ec0ab544 | 1659 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1660 | struct bgpevpn *vpn, |
1661 | struct bgp_dest *dest) | |
ec0ab544 AK |
1662 | { |
1663 | struct bgp_path_info *tmp_ri; | |
1664 | struct bgp_path_info *curr_select = NULL; | |
1665 | ||
9bcb3eef DS |
1666 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1667 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1668 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1669 | curr_select = tmp_ri; | |
1670 | break; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1675 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1676 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1677 | evpn_zebra_install(bgp, vpn, | |
1678 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1679 | curr_select); | |
ec0ab544 AK |
1680 | } |
1681 | ||
6d8c603a AK |
1682 | /* |
1683 | * If the local route was not selected evict it and tell zebra to re-add | |
1684 | * the best remote dest. | |
1685 | * | |
1686 | * Typically a local path added by zebra is expected to be selected as | |
1687 | * best. In which case when a remote path wins as best (later) | |
1688 | * evpn_route_select_install itself evicts the older-local-best path. | |
1689 | * | |
1690 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1691 | * is possible that the local path is no longer the "older" best path. | |
1692 | * It is a path that was never designated as best and hence requires | |
1693 | * additional handling to prevent bgp from injecting and holding on to a | |
1694 | * non-best local path. | |
1695 | */ | |
1696 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1697 | struct bgpevpn *vpn, | |
9bcb3eef | 1698 | struct bgp_dest *dest, |
9a8897aa | 1699 | struct bgp_path_info *local_pi) |
6d8c603a | 1700 | { |
6d8c603a | 1701 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1702 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1703 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1704 | dest); |
b54892e0 | 1705 | |
9c7edc03 | 1706 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1707 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1708 | |
1709 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1710 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1711 | } |
1712 | ||
70524092 AK |
1713 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
1714 | const struct prefix_evpn *p, | |
1715 | esi_t *esi) | |
1716 | { | |
1717 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
1718 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
1719 | || (is_evpn_prefix_ipaddr_v6(p) |
1720 | && !IN6_IS_ADDR_LINKLOCAL( | |
1721 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
1722 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
1723 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
1724 | } | |
1725 | ||
128ea8ab | 1726 | /* |
1727 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1728 | * and schedule for processing. | |
1729 | */ | |
d62a17ae | 1730 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1731 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1732 | uint32_t seq, esi_t *esi) |
128ea8ab | 1733 | { |
9bcb3eef | 1734 | struct bgp_dest *dest; |
d62a17ae | 1735 | struct attr attr; |
1736 | struct attr *attr_new; | |
1ec31309 | 1737 | int add_l3_ecomm = 0; |
40381db7 | 1738 | struct bgp_path_info *pi; |
d62a17ae | 1739 | afi_t afi = AFI_L2VPN; |
1740 | safi_t safi = SAFI_EVPN; | |
1741 | int route_change; | |
9c7edc03 | 1742 | bool old_is_sync = false; |
128ea8ab | 1743 | |
d62a17ae | 1744 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1745 | |
d62a17ae | 1746 | /* Build path-attribute for this route. */ |
1747 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1748 | attr.nexthop = vpn->originator_ip; | |
1749 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1750 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1751 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1752 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1753 | attr.router_flag = CHECK_FLAG(flags, |
1754 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1755 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1756 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1757 | ||
1758 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1759 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1760 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1761 | } | |
1762 | ||
be41eb68 | 1763 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1764 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1765 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 1766 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 1767 | } |
be41eb68 | 1768 | |
9c7edc03 | 1769 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
1770 | char buf3[ESI_STR_LEN]; |
1771 | ||
23d0a753 | 1772 | zlog_debug( |
c0d72166 | 1773 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
1774 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
1775 | : " ", | |
c0d72166 | 1776 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 1777 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 1778 | } |
1ec31309 | 1779 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1780 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1781 | uint8_t af_flags = 0; | |
1782 | ||
1783 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1784 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1785 | ||
1786 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1787 | } |
1788 | ||
a21bd7a3 | 1789 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1790 | |
1ec31309 | 1791 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1792 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1793 | * these routes. | |
1794 | */ | |
70524092 AK |
1795 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
1796 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 1797 | |
1798 | /* Set up extended community. */ | |
1799 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1800 | |
d62a17ae | 1801 | /* First, create (or fetch) route node within the VNI. */ |
1802 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1803 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1804 | |
d62a17ae | 1805 | /* Create or update route entry. */ |
9bcb3eef | 1806 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1807 | 1, &pi, flags, seq, |
1808 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1809 | assert(pi); |
1810 | attr_new = pi->attr; | |
128ea8ab | 1811 | |
6d8c603a AK |
1812 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1813 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1814 | |
1815 | /* Perform route selection. Normally, the local route in the | |
1816 | * VNI is expected to win and be the best route. However, if | |
1817 | * there is a race condition where a host moved from local to | |
1818 | * remote and the remote route was received in BGP just prior | |
1819 | * to the local MACIP notification from zebra, the remote | |
1820 | * route would win, and we should evict the defunct local route | |
1821 | * and (re)install the remote route into zebra. | |
1822 | */ | |
9bcb3eef | 1823 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1824 | /* |
9a8897aa AK |
1825 | * If the new local route was not selected evict it and tell zebra |
1826 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1827 | * routes. | |
6d8c603a | 1828 | */ |
9c7edc03 | 1829 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1830 | route_change = 0; |
9c7edc03 AK |
1831 | } else { |
1832 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1833 | route_change = 0; | |
1834 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1835 | } else { | |
1836 | bool new_is_sync; | |
1837 | ||
1838 | /* If the local path already existed and is still the | |
1839 | * best path we need to also check if it transitioned | |
1840 | * from being a sync path to a non-sync path. If it | |
1841 | * it did we need to notify zebra that the sync-path | |
1842 | * has been removed. | |
1843 | */ | |
1844 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1845 | if (!new_is_sync && old_is_sync) | |
1846 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1847 | } | |
9a8897aa | 1848 | } |
6d8c603a AK |
1849 | bgp_path_info_unlock(pi); |
1850 | ||
9bcb3eef | 1851 | bgp_dest_unlock_node(dest); |
128ea8ab | 1852 | |
d62a17ae | 1853 | /* If this is a new route or some attribute has changed, export the |
1854 | * route to the global table. The route will be advertised to peers | |
1855 | * from there. Note that this table is a 2-level tree (RD-level + | |
1856 | * Prefix-level) similar to L3VPN routes. | |
1857 | */ | |
1858 | if (route_change) { | |
40381db7 | 1859 | struct bgp_path_info *global_pi; |
128ea8ab | 1860 | |
c44ab6f1 AK |
1861 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1862 | (const struct prefix_evpn *)p, | |
1863 | &vpn->prd); | |
9bcb3eef | 1864 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1865 | &global_pi, flags, seq, |
1866 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1867 | |
d62a17ae | 1868 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1869 | bgp_process(bgp, dest, afi, safi); |
1870 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1871 | } |
128ea8ab | 1872 | |
d62a17ae | 1873 | /* Unintern temporary. */ |
1874 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1875 | |
d62a17ae | 1876 | return 0; |
128ea8ab | 1877 | } |
1878 | ||
50f74cf1 | 1879 | /* |
1880 | * Delete EVPN route entry. | |
1881 | * The entry can be in ESI/VNI table or the global table. | |
1882 | */ | |
185fb14a | 1883 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1884 | struct bgp_dest *dest, |
40381db7 | 1885 | struct bgp_path_info **pi) |
342dd0c6 | 1886 | { |
40381db7 | 1887 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1888 | |
40381db7 | 1889 | *pi = NULL; |
342dd0c6 | 1890 | |
50f74cf1 | 1891 | /* Now, find matching route. */ |
9bcb3eef | 1892 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1893 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1894 | if (tmp_pi->peer == bgp->peer_self |
1895 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1896 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1897 | break; |
1898 | ||
40381db7 | 1899 | *pi = tmp_pi; |
342dd0c6 | 1900 | |
1901 | /* Mark route for delete. */ | |
40381db7 | 1902 | if (tmp_pi) |
9bcb3eef | 1903 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1904 | } |
1905 | ||
1906 | /* Delete EVPN type5 route */ | |
996c9314 | 1907 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1908 | { |
1909 | afi_t afi = AFI_L2VPN; | |
1910 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1911 | struct bgp_dest *dest = NULL; |
40381db7 | 1912 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1913 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1914 | |
5e53dce3 T |
1915 | bgp_evpn = bgp_get_evpn(); |
1916 | if (!bgp_evpn) | |
faafdfa8 | 1917 | return 0; |
342dd0c6 | 1918 | |
1919 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1920 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1921 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1922 | if (!dest) |
342dd0c6 | 1923 | return 0; |
1924 | ||
9bcb3eef | 1925 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1926 | if (pi) |
9bcb3eef DS |
1927 | bgp_process(bgp_evpn, dest, afi, safi); |
1928 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1929 | return 0; |
1930 | } | |
1931 | ||
128ea8ab | 1932 | /* |
1933 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1934 | * schedule for processing. | |
1935 | */ | |
d62a17ae | 1936 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1937 | struct prefix_evpn *p) | |
1938 | { | |
9bcb3eef | 1939 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1940 | struct bgp_path_info *pi; |
d62a17ae | 1941 | afi_t afi = AFI_L2VPN; |
1942 | safi_t safi = SAFI_EVPN; | |
1943 | ||
1944 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1945 | * there | |
1946 | * is nothing further to do. | |
1947 | */ | |
1948 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1949 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1950 | if (!dest) | |
d62a17ae | 1951 | return 0; |
1952 | ||
1953 | /* Next, locate route node in the global EVPN routing table. Note that | |
1954 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1955 | * L3VPN routes. | |
1956 | */ | |
c44ab6f1 AK |
1957 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1958 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1959 | if (global_dest) { |
d62a17ae | 1960 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1961 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1962 | |
1963 | /* Schedule for processing - withdraws to peers happen from | |
1964 | * this table. | |
1965 | */ | |
40381db7 | 1966 | if (pi) |
9bcb3eef DS |
1967 | bgp_process(bgp, global_dest, afi, safi); |
1968 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1969 | } |
1970 | ||
1971 | /* Delete route entry in the VNI route table. This can just be removed. | |
1972 | */ | |
9bcb3eef | 1973 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1974 | if (pi) { |
9bcb3eef DS |
1975 | bgp_path_info_reap(dest, pi); |
1976 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1977 | } |
9bcb3eef | 1978 | bgp_dest_unlock_node(dest); |
d62a17ae | 1979 | |
1980 | return 0; | |
128ea8ab | 1981 | } |
1982 | ||
70524092 AK |
1983 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1984 | struct bgp_dest *dest, | |
1985 | struct bgp_path_info *local_pi, | |
1986 | const char *caller) | |
9c7edc03 AK |
1987 | { |
1988 | afi_t afi = AFI_L2VPN; | |
1989 | safi_t safi = SAFI_EVPN; | |
1990 | struct bgp_path_info *pi; | |
1991 | struct attr attr; | |
1992 | struct attr *attr_new; | |
1993 | uint32_t seq; | |
1994 | int add_l3_ecomm = 0; | |
09319b4e | 1995 | struct bgp_dest *global_dest; |
9c7edc03 | 1996 | struct bgp_path_info *global_pi; |
752eed47 DS |
1997 | struct prefix_evpn *evp = |
1998 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1999 | int route_change; |
2000 | bool old_is_sync = false; | |
2001 | ||
2002 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
2003 | return; | |
2004 | ||
2005 | /* | |
2006 | * Build attribute per local route as the MAC mobility and | |
2007 | * some other values could differ for different routes. The | |
2008 | * attributes will be shared in the hash table. | |
2009 | */ | |
2010 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
2011 | attr.nexthop = vpn->originator_ip; | |
2012 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2013 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2014 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2015 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2016 | attr.es_flags = local_pi->attr->es_flags; | |
2017 | if (local_pi->attr->default_gw) { | |
2018 | attr.default_gw = 1; | |
2019 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2020 | attr.router_flag = 1; | |
2021 | } | |
2022 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
2023 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
2024 | local_pi->extra->af_flags); | |
2025 | vni2label(vpn->vni, &(attr.label)); | |
2026 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2027 | * using L3 VNI for type-2 routes also. | |
2028 | */ | |
70524092 AK |
2029 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2030 | vpn, evp, | |
2031 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
9c7edc03 AK |
2032 | |
2033 | /* Set up extended community. */ | |
2034 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2035 | seq = mac_mobility_seqnum(local_pi->attr); | |
2036 | ||
2037 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2038 | char buf3[ESI_STR_LEN]; |
2039 | ||
23d0a753 | 2040 | zlog_debug( |
c0d72166 | 2041 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2042 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2043 | : " ", | |
c0d72166 | 2044 | vpn->vni, evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2045 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2046 | attr.es_flags, caller); | |
9c7edc03 AK |
2047 | } |
2048 | ||
2049 | /* Update the route entry. */ | |
09319b4e DS |
2050 | route_change = update_evpn_route_entry( |
2051 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2052 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2053 | |
2054 | assert(pi); | |
2055 | attr_new = pi->attr; | |
2056 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2057 | bgp_path_info_lock(pi); | |
2058 | ||
2059 | /* Perform route selection. Normally, the local route in the | |
2060 | * VNI is expected to win and be the best route. However, | |
2061 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2062 | * that causes best selection to be based on next hop), a | |
2063 | * remote route could win. If the local route is the best, | |
2064 | * ensure it is updated in the global EVPN route table and | |
2065 | * advertised to peers; otherwise, ensure it is evicted and | |
2066 | * (re)install the remote route into zebra. | |
2067 | */ | |
09319b4e | 2068 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2069 | |
2070 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2071 | route_change = 0; | |
2072 | } else { | |
2073 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2074 | route_change = 0; | |
09319b4e | 2075 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2076 | } else { |
2077 | bool new_is_sync; | |
2078 | ||
2079 | /* If the local path already existed and is still the | |
2080 | * best path we need to also check if it transitioned | |
2081 | * from being a sync path to a non-sync path. If it | |
2082 | * it did we need to notify zebra that the sync-path | |
2083 | * has been removed. | |
2084 | */ | |
2085 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2086 | if (!new_is_sync && old_is_sync) | |
2087 | evpn_zebra_uninstall(bgp, vpn, | |
2088 | evp, zero_vtep_ip); | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | ||
2093 | /* unlock pi */ | |
2094 | bgp_path_info_unlock(pi); | |
2095 | ||
2096 | if (route_change) { | |
2097 | /* Update route in global routing table. */ | |
09319b4e DS |
2098 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2099 | safi, evp, &vpn->prd); | |
2100 | assert(global_dest); | |
2101 | update_evpn_route_entry( | |
2102 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2103 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2104 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2105 | |
2106 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2107 | bgp_process(bgp, global_dest, afi, safi); |
2108 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2109 | } |
2110 | ||
2111 | /* Unintern temporary. */ | |
2112 | aspath_unintern(&attr.aspath); | |
2113 | } | |
2114 | ||
128ea8ab | 2115 | /* |
2116 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2117 | * be scheduled for advertise to peers. | |
2118 | */ | |
d62a17ae | 2119 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2120 | { | |
9bcb3eef | 2121 | struct bgp_dest *dest; |
9c7edc03 | 2122 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2123 | |
2124 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2125 | * routes updated, update corresponding entry in the global table too. | |
2126 | */ | |
9bcb3eef | 2127 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2128 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2129 | const struct prefix_evpn *evp = |
2130 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2131 | |
2132 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2133 | continue; | |
2134 | ||
f07e1c99 | 2135 | /* Identify local route. */ |
9bcb3eef | 2136 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2137 | tmp_pi = tmp_pi->next) { |
40381db7 | 2138 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2139 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2140 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2141 | break; |
7ec156a9 | 2142 | } |
d62a17ae | 2143 | |
40381db7 | 2144 | if (!tmp_pi) |
d62a17ae | 2145 | continue; |
2146 | ||
9c7edc03 AK |
2147 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2148 | __func__); | |
f07e1c99 | 2149 | } |
d62a17ae | 2150 | |
2151 | return 0; | |
128ea8ab | 2152 | } |
2153 | ||
2154 | /* | |
2155 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2156 | * global routing table. These are also scheduled for withdraw from peers. | |
2157 | */ | |
d62a17ae | 2158 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2159 | { |
d62a17ae | 2160 | afi_t afi; |
2161 | safi_t safi; | |
9bcb3eef | 2162 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2163 | struct bgp_table *table; |
40381db7 | 2164 | struct bgp_path_info *pi; |
128ea8ab | 2165 | |
d62a17ae | 2166 | afi = AFI_L2VPN; |
2167 | safi = SAFI_EVPN; | |
128ea8ab | 2168 | |
9bcb3eef DS |
2169 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2170 | (struct prefix *)&vpn->prd); | |
2171 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2172 | table = bgp_dest_get_bgp_table_info(rddest); | |
2173 | for (dest = bgp_table_top(table); dest; | |
2174 | dest = bgp_route_next(dest)) { | |
2175 | const struct prefix_evpn *evp = | |
2176 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2177 | dest); | |
128ea8ab | 2178 | |
d62a17ae | 2179 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2180 | continue; | |
128ea8ab | 2181 | |
9bcb3eef | 2182 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2183 | if (pi) |
9bcb3eef | 2184 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2185 | } |
2186 | } | |
128ea8ab | 2187 | |
d62a17ae | 2188 | /* Unlock RD node. */ |
9bcb3eef DS |
2189 | if (rddest) |
2190 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2191 | |
d62a17ae | 2192 | return 0; |
128ea8ab | 2193 | } |
2194 | ||
2195 | /* | |
2196 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2197 | * table as well as the per-VNI route table. | |
2198 | */ | |
d62a17ae | 2199 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2200 | { |
d62a17ae | 2201 | afi_t afi; |
2202 | safi_t safi; | |
9bcb3eef | 2203 | struct bgp_dest *dest; |
40381db7 | 2204 | struct bgp_path_info *pi; |
128ea8ab | 2205 | |
d62a17ae | 2206 | afi = AFI_L2VPN; |
2207 | safi = SAFI_EVPN; | |
128ea8ab | 2208 | |
d62a17ae | 2209 | /* First, walk the global route table for this VNI's type-2 local |
2210 | * routes. | |
2211 | * EVPN routes are a 2-level table, first get the RD table. | |
2212 | */ | |
2213 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2214 | |
d62a17ae | 2215 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2216 | for (dest = bgp_table_top(vpn->route_table); dest; |
2217 | dest = bgp_route_next(dest)) { | |
2218 | const struct prefix_evpn *evp = | |
2219 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2220 | |
d62a17ae | 2221 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2222 | continue; | |
128ea8ab | 2223 | |
9bcb3eef | 2224 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2225 | |
d62a17ae | 2226 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2227 | if (pi) |
9bcb3eef | 2228 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2229 | } |
128ea8ab | 2230 | |
d62a17ae | 2231 | return 0; |
128ea8ab | 2232 | } |
2233 | ||
2234 | /* | |
2235 | * Delete all routes in the per-VNI route table. | |
2236 | */ | |
d62a17ae | 2237 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2238 | { |
9bcb3eef | 2239 | struct bgp_dest *dest; |
40381db7 | 2240 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2241 | |
d62a17ae | 2242 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2243 | for (dest = bgp_table_top(vpn->route_table); dest; |
2244 | dest = bgp_route_next(dest)) { | |
2245 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2246 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2247 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2248 | bgp_path_info_delete(dest, pi); |
2249 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2250 | } |
2251 | } | |
128ea8ab | 2252 | |
d62a17ae | 2253 | return 0; |
128ea8ab | 2254 | } |
2255 | ||
833b8a50 AK |
2256 | /* BUM traffic flood mode per-l2-vni */ |
2257 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2258 | struct bgpevpn *vpn) | |
2259 | { | |
2260 | /* if flooding has been globally disabled per-vni mode is | |
2261 | * not relevant | |
2262 | */ | |
2263 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2264 | return VXLAN_FLOOD_DISABLED; | |
2265 | ||
2266 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2267 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2268 | return VXLAN_FLOOD_PIM_SM; | |
2269 | ||
2270 | /* default is ingress replication */ | |
2271 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2272 | } | |
2273 | ||
128ea8ab | 2274 | /* |
2275 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2276 | * export RT getting modified or change to tunnel IP. Note that these | |
2277 | * situations need the route in the per-VNI table as well as the global | |
2278 | * table to be updated (as attributes change). | |
2279 | */ | |
0ca10580 | 2280 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2281 | { |
d62a17ae | 2282 | int ret; |
2283 | struct prefix_evpn p; | |
128ea8ab | 2284 | |
9c49ac74 AD |
2285 | update_type1_routes_for_evi(bgp, vpn); |
2286 | ||
d62a17ae | 2287 | /* Update and advertise the type-3 route (only one) followed by the |
2288 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2289 | * |
2290 | * RT-3 only if doing head-end replication | |
d62a17ae | 2291 | */ |
833b8a50 AK |
2292 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2293 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2294 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2295 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2296 | if (ret) |
2297 | return ret; | |
2298 | } | |
128ea8ab | 2299 | |
d62a17ae | 2300 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2301 | } |
2302 | ||
2303 | /* | |
2304 | * Delete (and withdraw) local routes for specified VNI from the global | |
2305 | * table and per-VNI table. After this, remove all other routes from | |
2306 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2307 | * (advertise-all-vni) being disabled. | |
2308 | */ | |
d62a17ae | 2309 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2310 | { |
d62a17ae | 2311 | int ret; |
2312 | struct prefix_evpn p; | |
128ea8ab | 2313 | |
d62a17ae | 2314 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2315 | * followed by type-3 routes (only one) - for this VNI. | |
2316 | */ | |
2317 | ret = delete_all_type2_routes(bgp, vpn); | |
2318 | if (ret) | |
2319 | return ret; | |
128ea8ab | 2320 | |
d62a17ae | 2321 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2322 | ret = delete_evpn_route(bgp, vpn, &p); | |
2323 | if (ret) | |
2324 | return ret; | |
128ea8ab | 2325 | |
d62a17ae | 2326 | /* Delete all routes from the per-VNI table. */ |
2327 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2328 | } |
2329 | ||
76d07c7a AK |
2330 | /* |
2331 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2332 | * remove the type-3 route if any. A new type-3 route will be generated | |
2333 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2334 | */ | |
2335 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2336 | struct in_addr mcast_grp) | |
2337 | { | |
2338 | struct prefix_evpn p; | |
2339 | ||
2340 | vpn->mcast_grp = mcast_grp; | |
2341 | ||
2342 | if (is_vni_live(vpn)) { | |
2343 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2344 | delete_evpn_route(bgp, vpn, &p); | |
2345 | } | |
2346 | ||
2347 | return 0; | |
2348 | } | |
2349 | ||
128ea8ab | 2350 | /* |
d1911c26 | 2351 | * There is a tunnel endpoint IP address change for this VNI, delete |
2352 | * prior type-3 route (if needed) and update. | |
2353 | * Note: Route re-advertisement happens elsewhere after other processing | |
2354 | * other changes. | |
128ea8ab | 2355 | */ |
d62a17ae | 2356 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2357 | struct in_addr originator_ip) | |
128ea8ab | 2358 | { |
d62a17ae | 2359 | struct prefix_evpn p; |
128ea8ab | 2360 | |
ddd16ed5 MK |
2361 | /* If VNI is not live, we only need to update the originator ip */ |
2362 | if (!is_vni_live(vpn)) { | |
2363 | vpn->originator_ip = originator_ip; | |
2364 | return 0; | |
2365 | } | |
2366 | ||
db0e1937 MK |
2367 | /* Update the tunnel-ip hash */ |
2368 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2369 | bgp_tip_add(bgp, &originator_ip); | |
2370 | ||
2371 | /* filter routes as martian nexthop db has changed */ | |
2372 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2373 | ||
d62a17ae | 2374 | /* Need to withdraw type-3 route as the originator IP is part |
2375 | * of the key. | |
2376 | */ | |
2377 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2378 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2379 | |
d62a17ae | 2380 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2381 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2382 | return 0; |
185fb14a | 2383 | } |
50f74cf1 | 2384 | |
185fb14a AK |
2385 | static struct bgp_path_info * |
2386 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2387 | struct bgp_dest *dest, struct attr *attr) | |
2388 | { | |
2389 | struct attr *attr_new; | |
2390 | struct bgp_path_info *pi; | |
50f74cf1 | 2391 | |
185fb14a AK |
2392 | /* Add (or update) attribute to hash. */ |
2393 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2394 | |
185fb14a AK |
2395 | /* Create new route with its attribute. */ |
2396 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2397 | attr_new, dest); | |
2398 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2399 | bgp_path_info_extra_get(pi); | |
2400 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2401 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2402 | if (parent_pi->extra) { | |
2403 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2404 | sizeof(pi->extra->label)); | |
2405 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2406 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2407 | } |
185fb14a | 2408 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2409 | |
185fb14a | 2410 | return pi; |
50f74cf1 | 2411 | } |
2412 | ||
d3135ba3 | 2413 | /* |
2414 | * Install route entry into the VRF routing table and invoke route selection. | |
2415 | */ | |
2416 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2417 | const struct prefix_evpn *evp, |
40381db7 | 2418 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2419 | { |
9bcb3eef | 2420 | struct bgp_dest *dest; |
40381db7 | 2421 | struct bgp_path_info *pi; |
1ec31309 | 2422 | struct attr attr; |
d3135ba3 | 2423 | struct attr *attr_new; |
c4edf708 | 2424 | int ret = 0; |
d3135ba3 | 2425 | struct prefix p; |
2426 | struct prefix *pp = &p; | |
2427 | afi_t afi = 0; | |
2428 | safi_t safi = 0; | |
5f0c5ec8 | 2429 | bool new_pi = false; |
58bff4d1 AK |
2430 | bool use_l3nhg = false; |
2431 | bool is_l3nhg_active = false; | |
a2299aba | 2432 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2433 | |
2434 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2435 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2436 | |
2dbe669b | 2437 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2438 | zlog_debug( |
2dbe669b DA |
2439 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2440 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2441 | parent_pi->flags); | |
1eb88002 | 2442 | |
d3135ba3 | 2443 | /* Create (or fetch) route within the VRF. */ |
2444 | /* NOTE: There is no RD here. */ | |
3714a385 | 2445 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2446 | afi = AFI_IP; |
2447 | safi = SAFI_UNICAST; | |
9bcb3eef | 2448 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2449 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2450 | afi = AFI_IP6; |
2451 | safi = SAFI_UNICAST; | |
9bcb3eef | 2452 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2453 | } else |
2454 | return 0; | |
2455 | ||
1ec31309 | 2456 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2457 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2458 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2459 | * address for the rest of the code to flow through. In the case of IPv4, | |
2460 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2461 | */ |
6f4f49b2 | 2462 | attr = *parent_pi->attr; |
a2299aba AD |
2463 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2464 | if (afi == AFI_IP6) | |
2465 | evpn_convert_nexthop_to_ipv6(&attr); | |
2466 | else | |
2467 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
2468 | } else { | |
2469 | ||
2470 | /* | |
2471 | * If gateway IP overlay index is specified in the NLRI of | |
2472 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2473 | * for the prefix in the VRF | |
2474 | */ | |
2475 | if (bgp_debug_zebra(NULL)) { | |
2476 | zlog_debug( | |
2477 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2478 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2479 | buf1, sizeof(buf1)), pp, | |
2480 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2481 | } | |
2482 | ||
2483 | if (afi == AFI_IP6) { | |
2484 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2485 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2486 | sizeof(struct in6_addr)); |
2487 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2488 | } else { | |
860e740b | 2489 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2490 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2491 | } | |
2492 | } | |
1ec31309 | 2493 | |
58bff4d1 AK |
2494 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2495 | &is_l3nhg_active, NULL); | |
2496 | if (use_l3nhg) | |
2497 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2498 | if (is_l3nhg_active) | |
2499 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2500 | ||
d3135ba3 | 2501 | /* Check if route entry is already present. */ |
9bcb3eef | 2502 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2503 | if (pi->extra |
2504 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2505 | break; |
2506 | ||
5f0c5ec8 | 2507 | if (!pi) { |
9bcb3eef | 2508 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2509 | new_pi = true; |
2510 | } else { | |
40381db7 DS |
2511 | if (attrhash_cmp(pi->attr, &attr) |
2512 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2513 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2514 | return 0; |
2515 | } | |
2516 | /* The attribute has changed. */ | |
2517 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2518 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2519 | |
2520 | /* Restore route, if needed. */ | |
40381db7 | 2521 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2522 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2523 | |
2524 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2525 | if ((afi == AFI_IP |
2526 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2527 | || (afi == AFI_IP6 | |
2528 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2529 | &attr_new->mp_nexthop_global))) | |
2530 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2531 | |
9bcb3eef | 2532 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2533 | /* Unintern existing, set to new. */ |
40381db7 DS |
2534 | bgp_attr_unintern(&pi->attr); |
2535 | pi->attr = attr_new; | |
2536 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2537 | } |
a2299aba AD |
2538 | |
2539 | /* Gateway IP nexthop should be resolved */ | |
2540 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2541 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2542 | NULL, 0, NULL)) |
a2299aba AD |
2543 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2544 | else { | |
2545 | if (BGP_DEBUG(nht, NHT)) { | |
2546 | inet_ntop(pp->family, | |
2547 | &attr.evpn_overlay.gw_ip, | |
2548 | buf1, sizeof(buf1)); | |
2549 | zlog_debug("%s: gateway IP NH unresolved", | |
2550 | buf1); | |
2551 | } | |
2552 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2553 | } | |
2554 | } else { | |
2555 | ||
2556 | /* as it is an importation, change nexthop */ | |
2557 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2558 | } | |
d3135ba3 | 2559 | |
090efa2f AK |
2560 | /* Link path to evpn nexthop */ |
2561 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2562 | ||
9bcb3eef | 2563 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2564 | safi); |
b49cdf4c | 2565 | |
d3135ba3 | 2566 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2567 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2568 | |
7452e879 | 2569 | /* Process for route leaking. */ |
2570 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2571 | ||
9bcb3eef | 2572 | bgp_dest_unlock_node(dest); |
3c11d70a | 2573 | |
5f0c5ec8 | 2574 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2575 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2576 | new_pi ? "new" : "update", dest, | |
2577 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2578 | pi->flags); | |
5f0c5ec8 | 2579 | |
d3135ba3 | 2580 | return ret; |
2581 | } | |
2582 | ||
128ea8ab | 2583 | /* |
2584 | * Install route entry into the VNI routing table and invoke route selection. | |
2585 | */ | |
d62a17ae | 2586 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2587 | const struct prefix_evpn *p, |
40381db7 | 2588 | struct bgp_path_info *parent_pi) |
d62a17ae | 2589 | { |
9bcb3eef | 2590 | struct bgp_dest *dest; |
40381db7 | 2591 | struct bgp_path_info *pi; |
9c7edc03 | 2592 | struct bgp_path_info *local_pi; |
d62a17ae | 2593 | struct attr *attr_new; |
2594 | int ret; | |
c44ab6f1 | 2595 | struct prefix_evpn ad_evp; |
74efb822 AK |
2596 | bool old_local_es = false; |
2597 | bool new_local_es; | |
c44ab6f1 AK |
2598 | |
2599 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2600 | * we need to create a different copy for the VNI | |
2601 | */ | |
2602 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2603 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2604 | parent_pi->attr->nexthop); | |
d62a17ae | 2605 | |
2606 | /* Create (or fetch) route within the VNI. */ | |
2607 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2608 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2609 | |
2610 | /* Check if route entry is already present. */ | |
9bcb3eef | 2611 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2612 | if (pi->extra |
2613 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2614 | break; |
2615 | ||
bd0254af MS |
2616 | if (!pi) { |
2617 | /* Create an info */ | |
26c03e43 | 2618 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2619 | parent_pi->attr); |
74efb822 | 2620 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2621 | } else { |
40381db7 DS |
2622 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2623 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2624 | bgp_dest_unlock_node(dest); |
d62a17ae | 2625 | return 0; |
2626 | } | |
2627 | /* The attribute has changed. */ | |
2628 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2629 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2630 | |
50f74cf1 | 2631 | /* Restore route, if needed. */ |
40381db7 | 2632 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2633 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2634 | |
2635 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2636 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2637 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2638 | |
74efb822 AK |
2639 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
2640 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
2641 | /* If ESI is different or if its type has changed we | |
2642 | * need to reinstall the path in zebra | |
2643 | */ | |
2644 | if ((old_local_es != new_local_es) | |
2645 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
2646 | sizeof(attr_new->esi))) { | |
2647 | ||
2648 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2649 | zlog_debug("VNI %d path %pFX chg to %s es", | |
2650 | vpn->vni, &pi->net->p, | |
2651 | new_local_es ? "local" | |
2652 | : "non-local"); | |
2653 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
2654 | } | |
2655 | ||
50f74cf1 | 2656 | /* Unintern existing, set to new. */ |
40381db7 DS |
2657 | bgp_attr_unintern(&pi->attr); |
2658 | pi->attr = attr_new; | |
2659 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2660 | } |
2661 | ||
021b6596 AD |
2662 | /* Add this route to remote IP hashtable */ |
2663 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
2664 | ||
50f74cf1 | 2665 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2666 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2667 | |
9c7edc03 AK |
2668 | /* if the best path is a local path with a non-zero ES |
2669 | * sync info against the local path may need to be updated | |
2670 | * when a remote path is added/updated (including changes | |
2671 | * from sync-path to remote-path) | |
2672 | */ | |
2673 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 2674 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 2675 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 2676 | __func__); |
9bcb3eef | 2677 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2678 | |
50f74cf1 | 2679 | return ret; |
2680 | } | |
2681 | ||
d3135ba3 | 2682 | /* |
2683 | * Uninstall route entry from the VRF routing table and send message | |
2684 | * to zebra, if appropriate. | |
2685 | */ | |
2686 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2687 | const struct prefix_evpn *evp, |
40381db7 | 2688 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2689 | { |
9bcb3eef | 2690 | struct bgp_dest *dest; |
40381db7 | 2691 | struct bgp_path_info *pi; |
c4edf708 | 2692 | int ret = 0; |
d3135ba3 | 2693 | struct prefix p; |
2694 | struct prefix *pp = &p; | |
2695 | afi_t afi = 0; | |
2696 | safi_t safi = 0; | |
2697 | ||
2698 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2699 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2700 | |
2dbe669b | 2701 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2702 | zlog_debug( |
2dbe669b DA |
2703 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
2704 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2705 | parent_pi->flags); | |
1eb88002 | 2706 | |
d3135ba3 | 2707 | /* Locate route within the VRF. */ |
2708 | /* NOTE: There is no RD here. */ | |
3714a385 | 2709 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2710 | afi = AFI_IP; |
2711 | safi = SAFI_UNICAST; | |
9bcb3eef | 2712 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2713 | } else { |
2714 | afi = AFI_IP6; | |
2715 | safi = SAFI_UNICAST; | |
9bcb3eef | 2716 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2717 | } |
2718 | ||
9bcb3eef | 2719 | if (!dest) |
d3135ba3 | 2720 | return 0; |
2721 | ||
2722 | /* Find matching route entry. */ | |
9bcb3eef | 2723 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2724 | if (pi->extra |
2725 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2726 | break; |
2727 | ||
e71ad4b6 DA |
2728 | if (!pi) { |
2729 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 2730 | return 0; |
e71ad4b6 | 2731 | } |
d3135ba3 | 2732 | |
5f0c5ec8 | 2733 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2734 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2735 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2736 | pi->flags); | |
5f0c5ec8 | 2737 | |
7452e879 | 2738 | /* Process for route leaking. */ |
2739 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2740 | ||
9bcb3eef | 2741 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2742 | safi); |
4c7a11d5 | 2743 | |
d3135ba3 | 2744 | /* Mark entry for deletion */ |
9bcb3eef | 2745 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2746 | |
090efa2f AK |
2747 | /* Unlink path to evpn nexthop */ |
2748 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
2749 | ||
d3135ba3 | 2750 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2751 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2752 | |
2753 | /* Unlock route node. */ | |
9bcb3eef | 2754 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2755 | |
2756 | return ret; | |
2757 | } | |
2758 | ||
128ea8ab | 2759 | /* |
2760 | * Uninstall route entry from the VNI routing table and send message | |
2761 | * to zebra, if appropriate. | |
2762 | */ | |
d62a17ae | 2763 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2764 | const struct prefix_evpn *p, |
40381db7 | 2765 | struct bgp_path_info *parent_pi) |
128ea8ab | 2766 | { |
9bcb3eef | 2767 | struct bgp_dest *dest; |
40381db7 | 2768 | struct bgp_path_info *pi; |
9c7edc03 | 2769 | struct bgp_path_info *local_pi; |
d62a17ae | 2770 | int ret; |
c44ab6f1 AK |
2771 | struct prefix_evpn ad_evp; |
2772 | ||
2773 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2774 | * we need to create a different copy for the VNI | |
2775 | */ | |
2776 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2777 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2778 | parent_pi->attr->nexthop); | |
128ea8ab | 2779 | |
d62a17ae | 2780 | /* Locate route within the VNI. */ |
2781 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2782 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2783 | if (!dest) | |
d62a17ae | 2784 | return 0; |
128ea8ab | 2785 | |
d62a17ae | 2786 | /* Find matching route entry. */ |
9bcb3eef | 2787 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2788 | if (pi->extra |
2789 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2790 | break; |
128ea8ab | 2791 | |
e71ad4b6 DA |
2792 | if (!pi) { |
2793 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2794 | return 0; |
e71ad4b6 | 2795 | } |
128ea8ab | 2796 | |
021b6596 AD |
2797 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
2798 | ||
d62a17ae | 2799 | /* Mark entry for deletion */ |
9bcb3eef | 2800 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2801 | |
d62a17ae | 2802 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2803 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2804 | |
9c7edc03 AK |
2805 | /* if the best path is a local path with a non-zero ES |
2806 | * sync info against the local path may need to be updated | |
2807 | * when a remote path is deleted | |
2808 | */ | |
2809 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2810 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2811 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2812 | __func__); | |
2813 | ||
d62a17ae | 2814 | /* Unlock route node. */ |
9bcb3eef | 2815 | bgp_dest_unlock_node(dest); |
128ea8ab | 2816 | |
d62a17ae | 2817 | return ret; |
128ea8ab | 2818 | } |
2819 | ||
5ba238b7 MK |
2820 | /* |
2821 | * Given a route entry and a VRF, see if this route entry should be | |
2822 | * imported into the VRF i.e., RTs match. | |
2823 | */ | |
4b7e6066 | 2824 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2825 | struct bgp_path_info *pi) |
5ba238b7 | 2826 | { |
40381db7 | 2827 | struct attr *attr = pi->attr; |
5ba238b7 | 2828 | struct ecommunity *ecom; |
f6e07e1b | 2829 | uint32_t i; |
5ba238b7 MK |
2830 | |
2831 | assert(attr); | |
2832 | /* Route should have valid RT to be even considered. */ | |
2833 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2834 | return 0; | |
2835 | ||
b53e67a3 | 2836 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
2837 | if (!ecom || !ecom->size) |
2838 | return 0; | |
2839 | ||
2840 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2841 | * matches, we're done. | |
2842 | */ | |
2843 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2844 | uint8_t *pnt; |
2845 | uint8_t type, sub_type; | |
5ba238b7 MK |
2846 | struct ecommunity_val *eval; |
2847 | struct ecommunity_val eval_tmp; | |
2848 | struct vrf_irt_node *irt; | |
2849 | ||
2850 | /* Only deal with RTs */ | |
34540b0d | 2851 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2852 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2853 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2854 | type = *pnt++; |
2855 | sub_type = *pnt++; | |
2856 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2857 | continue; | |
2858 | ||
2859 | /* See if this RT matches specified VNIs import RTs */ | |
2860 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2861 | if (irt) |
5ba238b7 MK |
2862 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2863 | return 1; | |
2864 | ||
2865 | /* Also check for non-exact match. In this, we mask out the AS | |
2866 | * and | |
2867 | * only check on the local-admin sub-field. This is to | |
2868 | * facilitate using | |
2869 | * VNI as the RT for EBGP peering too. | |
2870 | */ | |
2871 | irt = NULL; | |
2872 | if (type == ECOMMUNITY_ENCODE_AS | |
2873 | || type == ECOMMUNITY_ENCODE_AS4 | |
2874 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2875 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2876 | mask_ecom_global_admin(&eval_tmp, eval); |
2877 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2878 | } | |
5d9cbca2 | 2879 | if (irt) |
5ba238b7 MK |
2880 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2881 | return 1; | |
2882 | } | |
2883 | ||
2884 | return 0; | |
2885 | } | |
2886 | ||
128ea8ab | 2887 | /* |
2888 | * Given a route entry and a VNI, see if this route entry should be | |
2889 | * imported into the VNI i.e., RTs match. | |
2890 | */ | |
d62a17ae | 2891 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2892 | struct bgp_path_info *pi) |
d62a17ae | 2893 | { |
40381db7 | 2894 | struct attr *attr = pi->attr; |
d62a17ae | 2895 | struct ecommunity *ecom; |
f6e07e1b | 2896 | uint32_t i; |
d62a17ae | 2897 | |
2898 | assert(attr); | |
2899 | /* Route should have valid RT to be even considered. */ | |
2900 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2901 | return 0; | |
2902 | ||
b53e67a3 | 2903 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 2904 | if (!ecom || !ecom->size) |
2905 | return 0; | |
2906 | ||
2907 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2908 | * matches, we're done. | |
2909 | */ | |
2910 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2911 | uint8_t *pnt; |
2912 | uint8_t type, sub_type; | |
d62a17ae | 2913 | struct ecommunity_val *eval; |
2914 | struct ecommunity_val eval_tmp; | |
2915 | struct irt_node *irt; | |
2916 | ||
2917 | /* Only deal with RTs */ | |
34540b0d | 2918 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2919 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2920 | + (i * ecom->unit_size)); |
d62a17ae | 2921 | type = *pnt++; |
2922 | sub_type = *pnt++; | |
2923 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2924 | continue; | |
2925 | ||
2926 | /* See if this RT matches specified VNIs import RTs */ | |
2927 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2928 | if (irt) |
d62a17ae | 2929 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2930 | return 1; | |
2931 | ||
2932 | /* Also check for non-exact match. In this, we mask out the AS | |
2933 | * and | |
2934 | * only check on the local-admin sub-field. This is to | |
2935 | * facilitate using | |
2936 | * VNI as the RT for EBGP peering too. | |
2937 | */ | |
2938 | irt = NULL; | |
2939 | if (type == ECOMMUNITY_ENCODE_AS | |
2940 | || type == ECOMMUNITY_ENCODE_AS4 | |
2941 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2942 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2943 | mask_ecom_global_admin(&eval_tmp, eval); |
2944 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2945 | } | |
b1ab0dfe | 2946 | if (irt) |
d62a17ae | 2947 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2948 | return 1; | |
2949 | } | |
2950 | ||
2951 | return 0; | |
128ea8ab | 2952 | } |
2953 | ||
47bf0432 CS |
2954 | /* This API will scan evpn routes for checking attribute's rmac |
2955 | * macthes with bgp instance router mac. It avoid installing | |
2956 | * route into bgp vrf table and remote rmac in bridge table. | |
2957 | */ | |
2958 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2959 | const struct prefix_evpn *evp, |
47bf0432 CS |
2960 | struct bgp_path_info *pi) |
2961 | { | |
2962 | /* evpn route could have learnt prior to L3vni has come up, | |
2963 | * perform rmac check before installing route and | |
2964 | * remote router mac. | |
2965 | * The route will be removed from global bgp table once | |
2966 | * SVI comes up with MAC and stored in hash, triggers | |
2967 | * bgp_mac_rescan_all_evpn_tables. | |
2968 | */ | |
05864da7 | 2969 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 2970 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
2971 | char attr_str[BUFSIZ] = {0}; |
2972 | ||
5022c833 | 2973 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 2974 | |
2dbe669b DA |
2975 | zlog_debug( |
2976 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
2977 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
2978 | } |
2979 | ||
2980 | return 1; | |
2981 | } | |
2982 | ||
2983 | return 0; | |
2984 | } | |
2985 | ||
bbc57c6c AK |
2986 | /* don't import hosts that are locally attached */ |
2987 | static inline bool | |
36dd4574 AK |
2988 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
2989 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
2990 | struct bgp_path_info *pi, int install) |
2991 | { | |
26c03e43 | 2992 | esi_t *esi; |
bbc57c6c | 2993 | |
26c03e43 AK |
2994 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2995 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
2996 | ||
2997 | /* Don't import routes that point to a local destination */ | |
2998 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
2999 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
3000 | char esi_buf[ESI_STR_LEN]; | |
3001 | ||
3002 | zlog_debug( | |
3003 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
3004 | install ? "import" : "unimport", evp, | |
3005 | esi_to_str(esi, esi_buf, | |
3006 | sizeof(esi_buf))); | |
3007 | } | |
3008 | return true; | |
3009 | } | |
58bff4d1 AK |
3010 | } |
3011 | return false; | |
3012 | } | |
26c03e43 | 3013 | |
58bff4d1 AK |
3014 | /* |
3015 | * Install or uninstall a mac-ip route in the provided vrf if | |
3016 | * there is a rt match | |
3017 | */ | |
3018 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3019 | struct bgp_path_info *pi, | |
3020 | int install) | |
3021 | { | |
3022 | int ret = 0; | |
3023 | const struct prefix_evpn *evp = | |
3024 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3025 | ||
3026 | /* Consider "valid" remote routes applicable for | |
3027 | * this VRF. | |
3028 | */ | |
3029 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3030 | && pi->type == ZEBRA_ROUTE_BGP | |
3031 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3032 | return 0; | |
3033 | ||
58bff4d1 AK |
3034 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3035 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3036 | return 0; | |
3037 | ||
74efb822 | 3038 | /* don't import hosts that are locally attached */ |
e57e63eb | 3039 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3040 | bgp_vrf, evp, pi, install)) | |
3041 | return 0; | |
3042 | ||
3043 | if (install) | |
58bff4d1 | 3044 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3045 | else |
58bff4d1 AK |
3046 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3047 | pi); | |
26c03e43 | 3048 | |
58bff4d1 AK |
3049 | if (ret) |
3050 | flog_err(EC_BGP_EVPN_FAIL, | |
3051 | "Failed to %s EVPN %pFX route in VRF %s", | |
3052 | install ? "install" : "uninstall", evp, | |
3053 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3054 | } |
58bff4d1 AK |
3055 | |
3056 | return ret; | |
bbc57c6c AK |
3057 | } |
3058 | ||
5ba238b7 MK |
3059 | /* |
3060 | * Install or uninstall mac-ip routes are appropriate for this | |
3061 | * particular VRF. | |
3062 | */ | |
996c9314 | 3063 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3064 | { |
3065 | afi_t afi; | |
3066 | safi_t safi; | |
9bcb3eef | 3067 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3068 | struct bgp_table *table; |
40381db7 | 3069 | struct bgp_path_info *pi; |
5ba238b7 | 3070 | int ret; |
5e53dce3 | 3071 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3072 | |
3073 | afi = AFI_L2VPN; | |
3074 | safi = SAFI_EVPN; | |
5e53dce3 T |
3075 | bgp_evpn = bgp_get_evpn(); |
3076 | if (!bgp_evpn) | |
5ba238b7 MK |
3077 | return -1; |
3078 | ||
3079 | /* Walk entire global routing table and evaluate routes which could be | |
3080 | * imported into this VRF. Note that we need to loop through all global | |
3081 | * routes to determine which route matches the import rt on vrf | |
3082 | */ | |
9bcb3eef DS |
3083 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3084 | rd_dest = bgp_route_next(rd_dest)) { | |
3085 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3086 | if (!table) |
3087 | continue; | |
3088 | ||
9bcb3eef DS |
3089 | for (dest = bgp_table_top(table); dest; |
3090 | dest = bgp_route_next(dest)) { | |
3091 | const struct prefix_evpn *evp = | |
3092 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3093 | dest); | |
5ba238b7 | 3094 | |
1eb88002 | 3095 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3096 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3097 | || evp->prefix.route_type | |
3098 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3099 | continue; |
3100 | ||
1eb88002 | 3101 | /* if not a mac+ip route skip this route */ |
3714a385 | 3102 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3103 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3104 | continue; |
3105 | ||
9bcb3eef | 3106 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3107 | pi = pi->next) { |
58bff4d1 AK |
3108 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3109 | bgp_vrf, pi, install); | |
3110 | if (ret) | |
3111 | return ret; | |
5ba238b7 MK |
3112 | } |
3113 | } | |
3114 | } | |
3115 | ||
3116 | return 0; | |
3117 | } | |
3118 | ||
128ea8ab | 3119 | /* |
3120 | * Install or uninstall routes of specified type that are appropriate for this | |
3121 | * particular VNI. | |
3122 | */ | |
d62a17ae | 3123 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3124 | struct bgpevpn *vpn, | |
3125 | bgp_evpn_route_type rtype, | |
3126 | int install) | |
3127 | { | |
0291c246 MK |
3128 | afi_t afi; |
3129 | safi_t safi; | |
9bcb3eef | 3130 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3131 | struct bgp_table *table; |
40381db7 | 3132 | struct bgp_path_info *pi; |
0291c246 | 3133 | int ret; |
d62a17ae | 3134 | |
3135 | afi = AFI_L2VPN; | |
3136 | safi = SAFI_EVPN; | |
3137 | ||
3138 | /* Walk entire global routing table and evaluate routes which could be | |
3139 | * imported into this VPN. Note that we cannot just look at the routes | |
3140 | * for | |
3141 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3142 | * RD. | |
3143 | */ | |
3144 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3145 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3146 | rd_dest = bgp_route_next(rd_dest)) { | |
3147 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3148 | if (!table) |
3149 | continue; | |
3150 | ||
9bcb3eef DS |
3151 | for (dest = bgp_table_top(table); dest; |
3152 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3153 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3154 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3155 | dest); | |
d62a17ae | 3156 | |
3157 | if (evp->prefix.route_type != rtype) | |
3158 | continue; | |
3159 | ||
9bcb3eef | 3160 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3161 | pi = pi->next) { |
d62a17ae | 3162 | /* Consider "valid" remote routes applicable for |
3163 | * this VNI. */ | |
40381db7 DS |
3164 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3165 | && pi->type == ZEBRA_ROUTE_BGP | |
3166 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3167 | continue; |
3168 | ||
40381db7 | 3169 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3170 | if (install) |
3171 | ret = install_evpn_route_entry( | |
40381db7 | 3172 | bgp, vpn, evp, pi); |
d62a17ae | 3173 | else |
3174 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3175 | bgp, vpn, evp, pi); |
d62a17ae | 3176 | |
3177 | if (ret) { | |
af4c2728 | 3178 | flog_err( |
e50f7cfd | 3179 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3180 | "%u: Failed to %s EVPN %s route in VNI %u", |
3181 | bgp->vrf_id, | |
3182 | install ? "install" | |
3183 | : "uninstall", | |
3184 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3185 | ? "MACIP" | |
3186 | : "IMET", | |
3187 | vpn->vni); | |
dc52bece DS |
3188 | |
3189 | bgp_dest_unlock_node(rd_dest); | |
3190 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3191 | return ret; |
3192 | } | |
3193 | } | |
3194 | } | |
3195 | } | |
3196 | } | |
3197 | ||
3198 | return 0; | |
128ea8ab | 3199 | } |
3200 | ||
5ba238b7 | 3201 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3202 | * is invoked upon l3vni-add or l3vni import rt change |
3203 | */ | |
5ba238b7 MK |
3204 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3205 | { | |
3206 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3207 | return 0; | |
3208 | } | |
3209 | ||
128ea8ab | 3210 | /* |
3211 | * Install any existing remote routes applicable for this VNI into its | |
3212 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3213 | * RT is changed. | |
3214 | */ | |
d62a17ae | 3215 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3216 | { |
d62a17ae | 3217 | int ret; |
128ea8ab | 3218 | |
d62a17ae | 3219 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3220 | * for this VNI. | |
3221 | */ | |
3222 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3223 | 1); | |
3224 | if (ret) | |
3225 | return ret; | |
128ea8ab | 3226 | |
c44ab6f1 AK |
3227 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3228 | 1); | |
3229 | if (ret) | |
3230 | return ret; | |
3231 | ||
d62a17ae | 3232 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3233 | 1); | |
128ea8ab | 3234 | } |
3235 | ||
5ba238b7 MK |
3236 | /* uninstall routes from l3vni vrf. */ |
3237 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3238 | { | |
3239 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3240 | return 0; | |
3241 | } | |
3242 | ||
90e60aa7 | 3243 | /* |
3244 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3245 | * this is invoked is upon an import RT change. | |
3246 | */ | |
d62a17ae | 3247 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3248 | { |
d62a17ae | 3249 | int ret; |
90e60aa7 | 3250 | |
d62a17ae | 3251 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3252 | * applicable | |
3253 | * for this VNI. | |
3254 | */ | |
3255 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3256 | 0); | |
3257 | if (ret) | |
3258 | return ret; | |
90e60aa7 | 3259 | |
c44ab6f1 | 3260 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3261 | 0); |
c44ab6f1 AK |
3262 | if (ret) |
3263 | return ret; | |
3264 | ||
3265 | ||
d62a17ae | 3266 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3267 | 0); | |
90e60aa7 | 3268 | } |
3269 | ||
d3135ba3 | 3270 | /* |
3271 | * Install or uninstall route in matching VRFs (list). | |
3272 | */ | |
3273 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3274 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3275 | struct bgp_path_info *pi, |
d3135ba3 | 3276 | struct list *vrfs, int install) |
3277 | { | |
d3135ba3 | 3278 | struct bgp *bgp_vrf; |
3279 | struct listnode *node, *nnode; | |
3280 | ||
90264d64 | 3281 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3282 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3283 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3284 | return 0; |
3285 | ||
90264d64 | 3286 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3287 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3288 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3289 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3290 | return 0; |
3291 | ||
d3135ba3 | 3292 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3293 | int ret; | |
3294 | ||
36dd4574 | 3295 | /* don't import hosts that are locally attached */ |
e57e63eb | 3296 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3297 | bgp_vrf, evp, pi, install)) | |
3298 | return 0; | |
3299 | ||
3300 | if (install) | |
40381db7 | 3301 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3302 | else |
996c9314 | 3303 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3304 | pi); |
d3135ba3 | 3305 | |
3306 | if (ret) { | |
e50f7cfd | 3307 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3308 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3309 | bgp_def->vrf_id, |
2dbe669b | 3310 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3311 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3312 | return ret; |
3313 | } | |
3314 | } | |
3315 | ||
3316 | return 0; | |
3317 | } | |
3318 | ||
128ea8ab | 3319 | /* |
3320 | * Install or uninstall route in matching VNIs (list). | |
3321 | */ | |
d62a17ae | 3322 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3323 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3324 | struct bgp_path_info *pi, |
d62a17ae | 3325 | struct list *vnis, int install) |
128ea8ab | 3326 | { |
d62a17ae | 3327 | struct bgpevpn *vpn; |
3328 | struct listnode *node, *nnode; | |
128ea8ab | 3329 | |
d62a17ae | 3330 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3331 | int ret; | |
128ea8ab | 3332 | |
d62a17ae | 3333 | if (!is_vni_live(vpn)) |
3334 | continue; | |
128ea8ab | 3335 | |
d62a17ae | 3336 | if (install) |
40381db7 | 3337 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3338 | else |
40381db7 | 3339 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3340 | |
d62a17ae | 3341 | if (ret) { |
1c50c1c0 QY |
3342 | flog_err(EC_BGP_EVPN_FAIL, |
3343 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3344 | bgp->vrf_id, install ? "install" : "uninstall", | |
3345 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3346 | ? "MACIP" | |
3347 | : "IMET", | |
3348 | vpn->vni); | |
d62a17ae | 3349 | return ret; |
3350 | } | |
3351 | } | |
128ea8ab | 3352 | |
d62a17ae | 3353 | return 0; |
128ea8ab | 3354 | } |
3355 | ||
3356 | /* | |
50f74cf1 | 3357 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3358 | */ |
26c03e43 AK |
3359 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3360 | safi_t safi, const struct prefix *p, | |
3361 | struct bgp_path_info *pi, | |
3362 | int import, bool in_vni_rt, | |
3363 | bool in_vrf_rt) | |
d62a17ae | 3364 | { |
3365 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3366 | struct attr *attr = pi->attr; |
d62a17ae | 3367 | struct ecommunity *ecom; |
f6e07e1b | 3368 | uint32_t i; |
c44ab6f1 | 3369 | struct prefix_evpn ad_evp; |
d62a17ae | 3370 | |
3371 | assert(attr); | |
3372 | ||
50f74cf1 | 3373 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3374 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3375 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3376 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3377 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3378 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3379 | return 0; |
3380 | ||
3381 | /* If we don't have Route Target, nothing much to do. */ | |
3382 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3383 | return 0; | |
3384 | ||
c44ab6f1 AK |
3385 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3386 | * we need to create a different copy for the VNI | |
3387 | */ | |
3388 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3389 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3390 | ||
b53e67a3 | 3391 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3392 | if (!ecom || !ecom->size) |
3393 | return -1; | |
3394 | ||
50f74cf1 | 3395 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3396 | * attached to the route */ | |
d62a17ae | 3397 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3398 | uint8_t *pnt; |
3399 | uint8_t type, sub_type; | |
d62a17ae | 3400 | struct ecommunity_val *eval; |
3401 | struct ecommunity_val eval_tmp; | |
996c9314 | 3402 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3403 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3404 | struct bgp_evpn_es *es; |
d62a17ae | 3405 | |
3406 | /* Only deal with RTs */ | |
34540b0d | 3407 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3408 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3409 | + (i * ecom->unit_size)); |
d62a17ae | 3410 | type = *pnt++; |
3411 | sub_type = *pnt++; | |
3412 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3413 | continue; | |
3414 | ||
58bff4d1 AK |
3415 | /* non-local MAC-IP routes in the global route table are linked |
3416 | * to the destination ES | |
3417 | */ | |
3418 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3419 | bgp_evpn_path_es_link(pi, 0, | |
3420 | bgp_evpn_attr_get_esi(pi->attr)); | |
3421 | ||
50f74cf1 | 3422 | /* |
3423 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3424 | * IMET route is imported into VNI table. | |
3425 | * prefix routes are imported into VRF table. | |
523cafc4 | 3426 | */ |
50f74cf1 | 3427 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3428 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3429 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3430 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3431 | |
26c03e43 | 3432 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3433 | if (irt) |
40381db7 DS |
3434 | install_uninstall_route_in_vnis( |
3435 | bgp, afi, safi, evp, pi, irt->vnis, | |
3436 | import); | |
50f74cf1 | 3437 | |
26c03e43 | 3438 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3439 | if (vrf_irt) |
40381db7 DS |
3440 | install_uninstall_route_in_vrfs( |
3441 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3442 | import); | |
50f74cf1 | 3443 | |
3444 | /* Also check for non-exact match. | |
3445 | * In this, we mask out the AS and | |
3446 | * only check on the local-admin sub-field. | |
3447 | * This is to facilitate using | |
3448 | * VNI as the RT for EBGP peering too. | |
3449 | */ | |
3450 | irt = NULL; | |
3451 | vrf_irt = NULL; | |
3452 | if (type == ECOMMUNITY_ENCODE_AS | |
3453 | || type == ECOMMUNITY_ENCODE_AS4 | |
3454 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3455 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3456 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
3457 | if (in_vni_rt) |
3458 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3459 | if (in_vrf_rt) | |
3460 | vrf_irt = | |
3461 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 3462 | } |
3463 | ||
3464 | if (irt) | |
40381db7 DS |
3465 | install_uninstall_route_in_vnis( |
3466 | bgp, afi, safi, evp, pi, irt->vnis, | |
3467 | import); | |
50f74cf1 | 3468 | if (vrf_irt) |
40381db7 DS |
3469 | install_uninstall_route_in_vrfs( |
3470 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3471 | import); | |
50f74cf1 | 3472 | } |
3473 | ||
3474 | /* es route is imported into the es table */ | |
3475 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3476 | ||
3477 | /* we will match based on the entire esi to avoid | |
3478 | * imoort of an es route for esi2 into esi1 | |
3479 | */ | |
c44ab6f1 | 3480 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3481 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3482 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3483 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3484 | } |
d62a17ae | 3485 | } |
3486 | ||
3487 | return 0; | |
128ea8ab | 3488 | } |
3489 | ||
26c03e43 AK |
3490 | /* |
3491 | * Install or uninstall route for appropriate VNIs/ESIs. | |
3492 | */ | |
3493 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
3494 | const struct prefix *p, | |
3495 | struct bgp_path_info *pi, int import) | |
3496 | { | |
3497 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
3498 | true, true); | |
3499 | } | |
3500 | ||
74efb822 AK |
3501 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
3502 | { | |
3503 | struct bgp *bgp_evpn; | |
3504 | ||
3505 | bgp_evpn = bgp_get_evpn(); | |
3506 | if (!bgp_evpn) | |
3507 | return; | |
3508 | ||
3509 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
3510 | &pi->net->p, pi, import); | |
3511 | } | |
3512 | ||
2bb9eff4 DS |
3513 | /* |
3514 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3515 | * routes | |
3516 | */ | |
80b140af MK |
3517 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3518 | { | |
5fd9c12b KA |
3519 | /* Delete ipv4 default route and withdraw from peers */ |
3520 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3521 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3522 | SAFI_UNICAST, false); | |
3523 | ||
80b140af | 3524 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3525 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3526 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3527 | |
5fd9c12b KA |
3528 | /* Delete ipv6 default route and withdraw from peers */ |
3529 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3530 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3531 | SAFI_UNICAST, false); | |
3532 | ||
80b140af | 3533 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3534 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3535 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3536 | } |
3537 | ||
2bb9eff4 DS |
3538 | /* |
3539 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3540 | * routes | |
3541 | */ | |
5394a276 | 3542 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3543 | { |
5394a276 CS |
3544 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3545 | ||
3546 | bgp_evpn = bgp_get_evpn(); | |
3547 | if (!bgp_evpn) | |
3548 | return; | |
3549 | ||
80b140af | 3550 | /* update all ipv4 routes */ |
fdf19f06 MK |
3551 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3552 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3553 | |
5fd9c12b KA |
3554 | /* update ipv4 default route and withdraw from peers */ |
3555 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3556 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3557 | SAFI_UNICAST, true); | |
3558 | ||
80b140af | 3559 | /* update all ipv6 routes */ |
fdf19f06 MK |
3560 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3561 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3562 | |
3563 | /* update ipv6 default route and withdraw from peers */ | |
3564 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3565 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3566 | SAFI_UNICAST, true); | |
3567 | ||
80b140af MK |
3568 | } |
3569 | ||
676f83b9 | 3570 | /* |
3571 | * update and advertise local routes for a VRF as type-5 routes. | |
3572 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3573 | * done in the global route table using the routes which already exist in the | |
3574 | * VRF routing table | |
3575 | */ | |
80b140af | 3576 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3577 | { |
80b140af MK |
3578 | /* skip if the RD is configured */ |
3579 | if (is_vrf_rd_configured(bgp_vrf)) | |
3580 | return; | |
3581 | ||
3582 | /* derive the RD for the VRF based on new router-id */ | |
3583 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3584 | ||
3585 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3586 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3587 | } |
3588 | ||
3589 | /* | |
3590 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3591 | * This is invoked upon VRF RD change. The processing is done only from global | |
3592 | * table. | |
3593 | */ | |
80b140af | 3594 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3595 | { |
80b140af MK |
3596 | /* skip if the RD is configured */ |
3597 | if (is_vrf_rd_configured(bgp_vrf)) | |
3598 | return; | |
3599 | ||
3600 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3601 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3602 | } |
3603 | ||
90e60aa7 | 3604 | /* |
3605 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3606 | * change. Note that the processing is done only on the global route table | |
3607 | * using routes that already exist in the per-VNI table. | |
3608 | */ | |
d62a17ae | 3609 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3610 | { | |
3611 | struct prefix_evpn p; | |
9bcb3eef | 3612 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3613 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3614 | struct attr *attr; |
3615 | afi_t afi = AFI_L2VPN; | |
3616 | safi_t safi = SAFI_EVPN; | |
3617 | ||
3618 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3619 | * attributes to create and advertise the type-3 route for this VNI | |
3620 | * in the global table. | |
fd069644 DS |
3621 | * |
3622 | * RT-3 only if doing head-end replication | |
d62a17ae | 3623 | */ |
833b8a50 AK |
3624 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3625 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3626 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3627 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3628 | if (!dest) /* unexpected */ | |
fd069644 | 3629 | return 0; |
9bcb3eef | 3630 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3631 | if (pi->peer == bgp->peer_self && |
3632 | pi->type == ZEBRA_ROUTE_BGP | |
3633 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3634 | break; | |
3635 | if (!pi) /* unexpected */ | |
3636 | return 0; | |
3637 | attr = pi->attr; | |
d62a17ae | 3638 | |
9c7edc03 AK |
3639 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3640 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3641 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3642 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3643 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3644 | |
fd069644 | 3645 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3646 | bgp_process(bgp, global_dest, afi, safi); |
3647 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3648 | } |
d62a17ae | 3649 | |
3650 | /* Now, walk this VNI's route table and use the route and its attribute | |
3651 | * to create and schedule route in global table. | |
3652 | */ | |
9bcb3eef DS |
3653 | for (dest = bgp_table_top(vpn->route_table); dest; |
3654 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3655 | const struct prefix_evpn *evp = |
9bcb3eef | 3656 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3657 | |
d60f63f0 AD |
3658 | /* |
3659 | * We have already processed type-3 routes. | |
3660 | * Process only type-1 and type-2 routes here. | |
3661 | */ | |
3662 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
3663 | && evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
d62a17ae | 3664 | continue; |
3665 | ||
9bcb3eef | 3666 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3667 | if (pi->peer == bgp->peer_self |
3668 | && pi->type == ZEBRA_ROUTE_BGP | |
3669 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3670 | break; |
40381db7 | 3671 | if (!pi) |
d62a17ae | 3672 | continue; |
3673 | ||
3674 | /* Create route in global routing table using this route entry's | |
3675 | * attribute. | |
3676 | */ | |
40381db7 | 3677 | attr = pi->attr; |
c44ab6f1 | 3678 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3679 | evp, &vpn->prd); |
9bcb3eef | 3680 | assert(global_dest); |
d60f63f0 AD |
3681 | |
3682 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
3683 | /* Type-2 route */ | |
3684 | update_evpn_route_entry( | |
3685 | bgp, vpn, afi, safi, global_dest, attr, 1, | |
3686 | &global_pi, 0, mac_mobility_seqnum(attr), | |
9c7edc03 | 3687 | false /* setup_sync */, NULL /* old_is_sync */); |
d60f63f0 AD |
3688 | } else { |
3689 | /* Type-1 route */ | |
3690 | struct bgp_evpn_es *es; | |
3691 | int route_changed = 0; | |
3692 | ||
3693 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
3694 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, | |
3695 | global_dest, attr, 1, | |
3696 | &global_pi, &route_changed); | |
3697 | } | |
d62a17ae | 3698 | |
3699 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3700 | bgp_process(bgp, global_dest, afi, safi); |
3701 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3702 | } |
3703 | ||
3704 | return 0; | |
90e60aa7 | 3705 | } |
3706 | ||
3707 | /* | |
3708 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3709 | * table. Invoked upon router-id change. | |
3710 | */ | |
d62a17ae | 3711 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3712 | { |
d62a17ae | 3713 | int ret; |
3714 | struct prefix_evpn p; | |
9bcb3eef | 3715 | struct bgp_dest *global_dest; |
40381db7 | 3716 | struct bgp_path_info *pi; |
d62a17ae | 3717 | afi_t afi = AFI_L2VPN; |
3718 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3719 | |
d62a17ae | 3720 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3721 | * for this VNI - from the global table. | |
3722 | */ | |
3723 | ret = delete_global_type2_routes(bgp, vpn); | |
3724 | if (ret) | |
3725 | return ret; | |
90e60aa7 | 3726 | |
d62a17ae | 3727 | /* Remove type-3 route for this VNI from global table. */ |
3728 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3729 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3730 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3731 | if (global_dest) { |
d62a17ae | 3732 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3733 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3734 | |
d62a17ae | 3735 | /* Schedule for processing - withdraws to peers happen from |
3736 | * this table. | |
3737 | */ | |
40381db7 | 3738 | if (pi) |
9bcb3eef DS |
3739 | bgp_process(bgp, global_dest, afi, safi); |
3740 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3741 | } |
90e60aa7 | 3742 | |
d60f63f0 AD |
3743 | |
3744 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 3745 | return 0; |
90e60aa7 | 3746 | } |
3747 | ||
2d48ee25 | 3748 | /* |
3749 | * Handle router-id change. Update and advertise local routes corresponding | |
3750 | * to this VNI from peers. Note that this is invoked after updating the | |
3751 | * router-id. The routes in the per-VNI table are used to create routes in | |
3752 | * the global table and schedule them. | |
3753 | */ | |
e3b78da8 | 3754 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3755 | { |
e3b78da8 | 3756 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3757 | |
d62a17ae | 3758 | /* Skip VNIs with configured RD. */ |
3759 | if (is_rd_configured(vpn)) | |
3760 | return; | |
2d48ee25 | 3761 | |
d62a17ae | 3762 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3763 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3764 | } |
3765 | ||
3766 | /* | |
3767 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3768 | * to this VNI from peers. Note that this is invoked prior to updating | |
3769 | * the router-id and is done only on the global route table, the routes | |
3770 | * are needed in the per-VNI table to re-advertise with new router id. | |
3771 | */ | |
e3b78da8 | 3772 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3773 | { |
e3b78da8 | 3774 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3775 | |
d62a17ae | 3776 | /* Skip VNIs with configured RD. */ |
3777 | if (is_rd_configured(vpn)) | |
3778 | return; | |
2d48ee25 | 3779 | |
d62a17ae | 3780 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3781 | } |
3782 | ||
fd069644 DS |
3783 | /* |
3784 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3785 | * This is invoked upon flooding mode changing to head-end replication. | |
3786 | */ | |
e3b78da8 | 3787 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3788 | { |
e3b78da8 | 3789 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3790 | struct bgp *bgp = data; |
3791 | struct prefix_evpn p; | |
3792 | ||
833b8a50 AK |
3793 | if (!vpn || !is_vni_live(vpn) || |
3794 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3795 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3796 | return; |
3797 | ||
3798 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3799 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3800 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3801 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3802 | } | |
3803 | ||
3804 | /* | |
3805 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3806 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3807 | */ | |
e3b78da8 | 3808 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3809 | { |
e3b78da8 | 3810 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3811 | struct bgp *bgp = data; |
3812 | struct prefix_evpn p; | |
3813 | ||
3814 | if (!vpn || !is_vni_live(vpn)) | |
3815 | return; | |
3816 | ||
3817 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3818 | delete_evpn_route(bgp, vpn, &p); | |
3819 | } | |
3820 | ||
128ea8ab | 3821 | /* |
3822 | * Process received EVPN type-2 route (advertise or withdraw). | |
3823 | */ | |
d62a17ae | 3824 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3825 | struct attr *attr, uint8_t *pfx, int psize, |
3826 | uint32_t addpath_id) | |
d62a17ae | 3827 | { |
3828 | struct prefix_rd prd; | |
e121d831 QY |
3829 | struct prefix_evpn p = {}; |
3830 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3831 | uint8_t ipaddr_len; |
3832 | uint8_t macaddr_len; | |
e121d831 QY |
3833 | /* holds the VNI(s) as in packet */ |
3834 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3835 | uint32_t num_labels = 0; |
554cd77a | 3836 | uint32_t eth_tag; |
d62a17ae | 3837 | int ret; |
3838 | ||
3839 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3840 | * additional 3 bytes if there is a second label (VNI): | |
3841 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3842 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3843 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3844 | */ | |
3845 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3846 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3847 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3848 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3849 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3850 | return -1; |
3851 | } | |
3852 | ||
e121d831 QY |
3853 | struct stream *pkt = stream_new(psize); |
3854 | stream_put(pkt, pfx, psize); | |
554cd77a | 3855 | |
d62a17ae | 3856 | /* Make prefix_rd */ |
3857 | prd.family = AF_UNSPEC; | |
3858 | prd.prefixlen = 64; | |
e121d831 QY |
3859 | |
3860 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3861 | |
3862 | /* Make EVPN prefix. */ | |
b03b8898 | 3863 | p.family = AF_EVPN; |
50f74cf1 | 3864 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3865 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3866 | ||
554cd77a | 3867 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3868 | if (attr) { |
e121d831 QY |
3869 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3870 | ||
74efb822 | 3871 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
3872 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
3873 | else | |
3874 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3875 | } else { |
3876 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3877 | } |
d62a17ae | 3878 | |
554cd77a | 3879 | /* Copy Ethernet Tag */ |
e121d831 | 3880 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3881 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3882 | |
3883 | /* Get the MAC Addr len */ | |
e121d831 | 3884 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3885 | |
3886 | /* Get the MAC Addr */ | |
28328ea9 | 3887 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3888 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3889 | } else { |
af4c2728 | 3890 | flog_err( |
e50f7cfd | 3891 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3892 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3893 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3894 | goto fail; |
d62a17ae | 3895 | } |
3896 | ||
3897 | ||
3898 | /* Get the IP. */ | |
e121d831 QY |
3899 | STREAM_GETC(pkt, ipaddr_len); |
3900 | ||
d62a17ae | 3901 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3902 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3903 | flog_err( |
e50f7cfd | 3904 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3905 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3906 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3907 | goto fail; |
d62a17ae | 3908 | } |
3909 | ||
3910 | if (ipaddr_len) { | |
3911 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3912 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3913 | ? IPADDR_V4 |
3914 | : IPADDR_V6; | |
e121d831 | 3915 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3916 | } |
d62a17ae | 3917 | |
b57ba6d2 | 3918 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3919 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3920 | num_labels++; |
e121d831 | 3921 | |
b57ba6d2 | 3922 | /* Do we have a second VNI? */ |
e121d831 | 3923 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3924 | num_labels++; |
e121d831 | 3925 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3926 | } |
d62a17ae | 3927 | |
3928 | /* Process the route. */ | |
3929 | if (attr) | |
3930 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3931 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3932 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3933 | else |
3934 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3935 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3936 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3937 | goto done; |
3938 | ||
3939 | fail: | |
3940 | stream_failure: | |
3941 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3942 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3943 | peer->bgp->vrf_id, peer->host); | |
3944 | ret = -1; | |
3945 | done: | |
3946 | stream_free(pkt); | |
d62a17ae | 3947 | return ret; |
128ea8ab | 3948 | } |
3949 | ||
3950 | /* | |
3951 | * Process received EVPN type-3 route (advertise or withdraw). | |
3952 | */ | |
d62a17ae | 3953 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3954 | struct attr *attr, uint8_t *pfx, int psize, |
3955 | uint32_t addpath_id) | |
d62a17ae | 3956 | { |
3957 | struct prefix_rd prd; | |
3958 | struct prefix_evpn p; | |
d7c0a89a | 3959 | uint8_t ipaddr_len; |
554cd77a | 3960 | uint32_t eth_tag; |
d62a17ae | 3961 | int ret; |
3962 | ||
3963 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3964 | * IP len (1) and IP (4 or 16). | |
3965 | */ | |
3966 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3967 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3968 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3969 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3970 | return -1; |
3971 | } | |
3972 | ||
7fd077aa | 3973 | /* If PMSI is present, log if it is anything other than IR. |
3974 | * Note: We just simply ignore the values as it is not clear if | |
3975 | * doing anything else is better. | |
3976 | */ | |
3977 | if (attr && | |
3978 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
3979 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
3980 | ||
3981 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
3982 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3983 | flog_warn( | |
3984 | EC_BGP_EVPN_PMSI_PRESENT, | |
3985 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3986 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 3987 | } |
3988 | } | |
3989 | ||
d62a17ae | 3990 | /* Make prefix_rd */ |
3991 | prd.family = AF_UNSPEC; | |
3992 | prd.prefixlen = 64; | |
3993 | memcpy(&prd.val, pfx, 8); | |
3994 | pfx += 8; | |
3995 | ||
3996 | /* Make EVPN prefix. */ | |
3997 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3998 | p.family = AF_EVPN; |
50f74cf1 | 3999 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4000 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4001 | ||
554cd77a VB |
4002 | /* Copy Ethernet Tag */ |
4003 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4004 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4005 | pfx += 4; |
4006 | ||
4007 | /* Get the IP. */ | |
4008 | ipaddr_len = *pfx++; | |
4009 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4010 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4011 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4012 | } else { |
af4c2728 | 4013 | flog_err( |
e50f7cfd | 4014 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4015 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4016 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4017 | return -1; | |
4018 | } | |
4019 | ||
4020 | /* Process the route. */ | |
4021 | if (attr) | |
4022 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4023 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4024 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4025 | else |
4026 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4027 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4028 | &prd, NULL, 0, NULL); |
d62a17ae | 4029 | return ret; |
128ea8ab | 4030 | } |
4031 | ||
4032 | /* | |
4033 | * Process received EVPN type-5 route (advertise or withdraw). | |
4034 | */ | |
d62a17ae | 4035 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4036 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4037 | uint32_t addpath_id) |
d62a17ae | 4038 | { |
4039 | struct prefix_rd prd; | |
4040 | struct prefix_evpn p; | |
4041 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4042 | uint8_t ippfx_len; |
4043 | uint32_t eth_tag; | |
b57ba6d2 | 4044 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4045 | int ret; |
66ff6089 | 4046 | bool is_valid_update = true; |
d62a17ae | 4047 | |
4048 | /* Type-5 route should be 34 or 58 bytes: | |
4049 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4050 | * GW (4 or 16) and VNI (3). | |
4051 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4052 | */ | |
4053 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4054 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4055 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4056 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4057 | return -1; |
4058 | } | |
4059 | ||
4060 | /* Make prefix_rd */ | |
4061 | prd.family = AF_UNSPEC; | |
4062 | prd.prefixlen = 64; | |
4063 | memcpy(&prd.val, pfx, 8); | |
4064 | pfx += 8; | |
4065 | ||
4066 | /* Make EVPN prefix. */ | |
4067 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 4068 | p.family = AF_EVPN; |
50f74cf1 | 4069 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4070 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4071 | ||
4072 | /* Additional information outside of prefix - ESI and GW IP */ | |
4073 | memset(&evpn, 0, sizeof(evpn)); | |
4074 | ||
66ff6089 | 4075 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4076 | if (attr) |
66ff6089 | 4077 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4078 | pfx += ESI_BYTES; |
d62a17ae | 4079 | |
4080 | /* Fetch Ethernet Tag. */ | |
4081 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4082 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4083 | pfx += 4; |
4084 | ||
4085 | /* Fetch IP prefix length. */ | |
4086 | ippfx_len = *pfx++; | |
4087 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4088 | flog_err( |
e50f7cfd | 4089 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4090 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4091 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4092 | return -1; | |
4093 | } | |
3714a385 | 4094 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4095 | |
4096 | /* Determine IPv4 or IPv6 prefix */ | |
4097 | /* Since the address and GW are from the same family, this just becomes | |
4098 | * a simple check on the total size. | |
4099 | */ | |
4100 | if (psize == 34) { | |
3714a385 | 4101 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4102 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4103 | pfx += 4; |
860e740b IR |
4104 | SET_IPADDR_V4(&evpn.gw_ip); |
4105 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4106 | pfx += 4; |
d62a17ae | 4107 | } else { |
3714a385 | 4108 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4109 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4110 | IPV6_MAX_BYTELEN); | |
4111 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4112 | SET_IPADDR_V6(&evpn.gw_ip); |
4113 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4114 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4115 | } |
4116 | ||
b57ba6d2 MK |
4117 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4118 | memset(&label, 0, sizeof(label)); | |
4119 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4120 | |
4121 | /* | |
4122 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4123 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4124 | * field | |
6b11bd8d | 4125 | */ |
d62a17ae | 4126 | |
66ff6089 AD |
4127 | /* |
4128 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4129 | * at the same time is should be treated as withdraw | |
4130 | */ | |
860e740b IR |
4131 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4132 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4133 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4134 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4135 | peer->host); | |
4136 | is_valid_update = false; | |
4137 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4138 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4139 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4140 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4141 | if (attr) { |
860e740b IR |
4142 | if (is_zero_mac(&attr->rmac) && |
4143 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4144 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4145 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4146 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4147 | peer->host); | |
c6ec0c74 | 4148 | is_valid_update = false; |
66ff6089 | 4149 | } |
c6ec0c74 KA |
4150 | |
4151 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4152 | is_valid_update = false; | |
4153 | } | |
4154 | ||
d62a17ae | 4155 | /* Process the route. */ |
66ff6089 | 4156 | if (attr && is_valid_update) |
d62a17ae | 4157 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4158 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4159 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4160 | else { |
4161 | if (!is_valid_update) { | |
4162 | char attr_str[BUFSIZ] = {0}; | |
4163 | ||
4164 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4165 | zlog_warn( | |
4166 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4167 | peer->hostname, peer->bgp->vrf_id, &p, | |
4168 | attr_str); | |
4169 | } | |
d62a17ae | 4170 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4171 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4172 | &prd, &label, 1, &evpn); |
66ff6089 | 4173 | } |
d62a17ae | 4174 | |
4175 | return ret; | |
4176 | } | |
4177 | ||
5f040085 DS |
4178 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4179 | const struct prefix_rd *prd, | |
4180 | mpls_label_t *label, uint32_t num_labels, | |
4181 | struct attr *attr) | |
d62a17ae | 4182 | { |
4183 | int len; | |
4184 | char temp[16]; | |
5f040085 | 4185 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4186 | |
4187 | memset(&temp, 0, 16); | |
b03b8898 | 4188 | if (p->family != AF_EVPN) |
d62a17ae | 4189 | return; |
4190 | p_evpn_p = &(p->u.prefix_evpn); | |
4191 | ||
e9fc2840 | 4192 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4193 | IP and GW-IP have to be both ipv4 or ipv6 |
4194 | */ | |
3714a385 | 4195 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4196 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4197 | else |
e9fc2840 | 4198 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4199 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4200 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4201 | stream_put(s, prd->val, 8); | |
6c995628 | 4202 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4203 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4204 | else |
c44ab6f1 | 4205 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4206 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4207 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4208 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4209 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4210 | else |
3714a385 | 4211 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4212 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4213 | const struct bgp_route_evpn *evpn_overlay = |
4214 | bgp_attr_get_evpn_overlay(attr); | |
4215 | ||
3714a385 | 4216 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4217 | stream_put_ipv4(s, |
4218 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4219 | else |
860e740b | 4220 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4221 | } else { |
3714a385 | 4222 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4223 | stream_put_ipv4(s, 0); |
4224 | else | |
4225 | stream_put(s, &temp, 16); | |
4226 | } | |
4227 | ||
b57ba6d2 | 4228 | if (num_labels) |
d62a17ae | 4229 | stream_put(s, label, 3); |
4230 | else | |
4231 | stream_put3(s, 0); | |
128ea8ab | 4232 | } |
4233 | ||
4234 | /* | |
4235 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4236 | */ | |
e3b78da8 | 4237 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4238 | { |
e3b78da8 | 4239 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4240 | |
d62a17ae | 4241 | /* Remove EVPN routes and schedule for processing. */ |
4242 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4243 | |
d62a17ae | 4244 | /* Clear "live" flag and see if hash needs to be freed. */ |
4245 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4246 | if (!is_vni_configured(vpn)) | |
4247 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4248 | } |
4249 | ||
4250 | /* | |
4251 | * Free a VNI entry; iterator function called during cleanup. | |
4252 | */ | |
e3b78da8 | 4253 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4254 | { |
e3b78da8 | 4255 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4256 | |
d62a17ae | 4257 | delete_all_vni_routes(bgp, vpn); |
4258 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4259 | } |
4260 | ||
c581d8b0 MK |
4261 | /* |
4262 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4263 | */ | |
4264 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4265 | { | |
5e53dce3 | 4266 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4267 | |
c581d8b0 | 4268 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4269 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4270 | ||
4271 | /* Map RT to VRF */ | |
5e53dce3 T |
4272 | bgp_evpn = bgp_get_evpn(); |
4273 | if (!bgp_evpn) | |
10ebe1ab MK |
4274 | return; |
4275 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4276 | } |
4277 | ||
4278 | /* | |
4279 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4280 | */ | |
4281 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4282 | { | |
4283 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4284 | } | |
4285 | ||
4286 | /* | |
4287 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4288 | */ | |
4289 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4290 | { | |
4291 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4292 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4293 | } | |
4294 | ||
4295 | /* | |
4296 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4297 | */ | |
4298 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4299 | { | |
4300 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4301 | } | |
128ea8ab | 4302 | |
f1f8b53c MK |
4303 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4304 | { | |
5e53dce3 | 4305 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4306 | struct listnode *node = NULL; |
4307 | struct bgpevpn *vpn = NULL; | |
4308 | ||
5e53dce3 T |
4309 | bgp_evpn = bgp_get_evpn(); |
4310 | if (!bgp_evpn) | |
f1f8b53c MK |
4311 | return; |
4312 | ||
4992b4ae MK |
4313 | /* update all type-5 routes */ |
4314 | update_advertise_vrf_routes(bgp_vrf); | |
4315 | ||
4316 | /* update all type-2 routes */ | |
f1f8b53c | 4317 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4318 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4319 | } |
4320 | ||
bf1061d8 VB |
4321 | /* |
4322 | * Handle autort change for a given VNI. | |
4323 | */ | |
e3b78da8 | 4324 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4325 | { |
e3b78da8 | 4326 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4327 | |
bf1061d8 VB |
4328 | if (!is_import_rt_configured(vpn)) { |
4329 | if (is_vni_live(vpn)) | |
4330 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4331 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4332 | list_delete_all_node(vpn->import_rtl); |
4333 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4334 | if (is_vni_live(vpn)) | |
4335 | bgp_evpn_install_routes(bgp, vpn); | |
4336 | } | |
4337 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4338 | list_delete_all_node(vpn->export_rtl); |
4339 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4340 | if (is_vni_live(vpn)) | |
4341 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4342 | } | |
4343 | } | |
4344 | ||
4204021e PG |
4345 | /* |
4346 | * Handle autort change for L3VNI. | |
4347 | */ | |
4348 | static void update_autort_l3vni(struct bgp *bgp) | |
4349 | { | |
4350 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4351 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4352 | return; | |
4353 | ||
4354 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4355 | if (is_l3vni_live(bgp)) | |
4356 | uninstall_routes_for_vrf(bgp); | |
4357 | ||
4358 | /* Cleanup the RT to VRF mapping */ | |
4359 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4360 | ||
4361 | /* Remove auto generated RT */ | |
4362 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4363 | ||
4364 | list_delete_all_node(bgp->vrf_import_rtl); | |
4365 | ||
4366 | /* Map auto derive or configured RTs */ | |
4367 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4368 | } | |
4369 | ||
4370 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4371 | list_delete_all_node(bgp->vrf_export_rtl); | |
4372 | ||
4373 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4374 | ||
4375 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4376 | ||
4377 | if (is_l3vni_live(bgp)) | |
4378 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4379 | } | |
4380 | ||
4381 | if (!is_l3vni_live(bgp)) | |
4382 | return; | |
4383 | ||
4384 | /* advertise type-5 routes if needed */ | |
4385 | update_advertise_vrf_routes(bgp); | |
4386 | ||
4387 | /* install all remote routes belonging to this l3vni | |
4388 | * into corresponding vrf | |
4389 | */ | |
4390 | install_routes_for_vrf(bgp); | |
4391 | } | |
4392 | ||
128ea8ab | 4393 | /* |
4394 | * Public functions. | |
4395 | */ | |
4396 | ||
5424b7ba | 4397 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4398 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4399 | afi_t afi, safi_t safi) |
4400 | { | |
4401 | int ret = 0; | |
4402 | struct prefix_evpn evp; | |
5424b7ba | 4403 | |
31310b25 | 4404 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4405 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4406 | if (ret) |
af4c2728 | 4407 | flog_err( |
e50f7cfd | 4408 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4409 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4410 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4411 | } |
4412 | ||
342dd0c6 | 4413 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4414 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4415 | { |
4416 | struct bgp_table *table = NULL; | |
9bcb3eef | 4417 | struct bgp_dest *dest = NULL; |
40381db7 | 4418 | struct bgp_path_info *pi; |
342dd0c6 | 4419 | |
053905d2 | 4420 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4421 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4422 | /* Only care about "selected" routes. Also ensure that |
4423 | * these are routes that are injectable into EVPN. | |
4424 | */ | |
25f2ca53 | 4425 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4426 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4427 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4428 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4429 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4430 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4431 | safi); |
25f2ca53 | 4432 | break; |
4433 | } | |
4434 | } | |
4435 | } | |
5424b7ba | 4436 | } |
342dd0c6 | 4437 | |
5fd9c12b KA |
4438 | /* |
4439 | * evpn - enable advertisement of default g/w | |
4440 | */ | |
4441 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4442 | safi_t safi, bool add) | |
4443 | { | |
4444 | struct prefix ip_prefix; | |
4445 | ||
4446 | /* form the default prefix 0.0.0.0/0 */ | |
4447 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4448 | ip_prefix.family = afi2family(afi); | |
4449 | ||
4450 | if (add) { | |
4451 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4452 | NULL, afi, safi); | |
4453 | } else { | |
4454 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4455 | afi, safi); | |
4456 | } | |
4457 | } | |
4458 | ||
4459 | ||
2f69f6d3 | 4460 | /* |
4461 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4462 | * to this function correspond to those of the source IP prefix (best | |
4463 | * path in the case of the attr. In the case of a local prefix (when we | |
4464 | * are advertising local subnets), the src_attr will be NULL. | |
4465 | */ | |
bd494ec5 | 4466 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4467 | struct attr *src_attr, afi_t afi, |
4468 | safi_t safi) | |
5424b7ba MK |
4469 | { |
4470 | int ret = 0; | |
4471 | struct prefix_evpn evp; | |
7c82b312 | 4472 | |
31310b25 | 4473 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 4474 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 4475 | if (ret) |
e50f7cfd | 4476 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
4477 | "%u: Failed to create type-5 route for prefix %pFX", |
4478 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 4479 | } |
4480 | ||
2f69f6d3 | 4481 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4482 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4483 | * advertisement is enabled. | |
4484 | */ | |
996c9314 LB |
4485 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4486 | safi_t safi) | |
342dd0c6 | 4487 | { |
4488 | struct bgp_table *table = NULL; | |
9bcb3eef | 4489 | struct bgp_dest *dest = NULL; |
40381db7 | 4490 | struct bgp_path_info *pi; |
342dd0c6 | 4491 | |
053905d2 | 4492 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4493 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4494 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4495 | * attribute. Also, ensure that the route is injectable |
4496 | * into EVPN. | |
2f69f6d3 | 4497 | * TODO: Support for AddPath for EVPN. |
4498 | */ | |
9bcb3eef | 4499 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4500 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4501 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4502 | |
4503 | /* apply the route-map */ | |
4504 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4505 | route_map_result_t ret; |
e34291b8 | 4506 | struct bgp_path_info tmp_pi; |
4507 | struct bgp_path_info_extra tmp_pie; | |
4508 | struct attr tmp_attr; | |
4509 | ||
4510 | tmp_attr = *pi->attr; | |
4511 | ||
4512 | /* Fill temp path_info */ | |
9bcb3eef DS |
4513 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4514 | dest, pi, pi->peer, | |
4515 | &tmp_attr); | |
e34291b8 | 4516 | |
4517 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4518 | |
996c9314 LB |
4519 | ret = route_map_apply( |
4520 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4521 | .map, | |
9bcb3eef | 4522 | bgp_dest_get_prefix(dest), |
1782514f | 4523 | &tmp_pi); |
e34291b8 | 4524 | if (ret == RMAP_DENYMATCH) { |
4525 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4526 | continue; |
e34291b8 | 4527 | } |
4528 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4529 | bgp_vrf, |
9bcb3eef | 4530 | bgp_dest_get_prefix(dest), |
b54892e0 | 4531 | &tmp_attr, afi, safi); |
e34291b8 | 4532 | } else |
4533 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4534 | bgp_vrf, |
9bcb3eef | 4535 | bgp_dest_get_prefix(dest), |
b54892e0 | 4536 | pi->attr, afi, safi); |
2f69f6d3 | 4537 | break; |
4538 | } | |
4539 | } | |
31310b25 | 4540 | } |
342dd0c6 | 4541 | } |
4542 | ||
996c9314 | 4543 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4544 | { |
4545 | struct listnode *node, *nnode, *node_to_del; | |
4546 | struct ecommunity *ecom, *ecom_auto; | |
4547 | struct ecommunity_val eval; | |
4548 | ||
bf1061d8 VB |
4549 | if (bgp->advertise_autort_rfc8365) |
4550 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4551 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4552 | ||
4553 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4554 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4555 | node_to_del = NULL; |
4556 | ||
4557 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4558 | if (ecommunity_match(ecom, ecom_auto)) { | |
4559 | ecommunity_free(&ecom); | |
4560 | node_to_del = node; | |
4561 | } | |
4562 | } | |
4563 | ||
4564 | if (node_to_del) | |
4565 | list_delete_node(rtl, node_to_del); | |
4566 | ||
4567 | ecommunity_free(&ecom_auto); | |
4568 | } | |
4569 | ||
4570 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4571 | struct ecommunity *ecomadd) |
c581d8b0 | 4572 | { |
5ba238b7 | 4573 | /* uninstall routes from vrf */ |
3d0b43d7 | 4574 | if (is_l3vni_live(bgp_vrf)) |
4575 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4576 | |
4577 | /* Cleanup the RT to VRF mapping */ | |
4578 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4579 | ||
c581d8b0 MK |
4580 | /* Remove auto generated RT */ |
4581 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4582 | ||
4583 | /* Add the newly configured RT to RT list */ | |
4584 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4585 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4586 | ||
3d0b43d7 | 4587 | /* map VRF to its RTs and install routes matching the new RTs */ |
4588 | if (is_l3vni_live(bgp_vrf)) { | |
4589 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4590 | install_routes_for_vrf(bgp_vrf); | |
4591 | } | |
c581d8b0 MK |
4592 | } |
4593 | ||
4594 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4595 | struct ecommunity *ecomdel) | |
4596 | { | |
4597 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4598 | struct ecommunity *ecom = NULL; | |
4599 | ||
5ba238b7 | 4600 | /* uninstall routes from vrf */ |
3d0b43d7 | 4601 | if (is_l3vni_live(bgp_vrf)) |
4602 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4603 | |
4604 | /* Cleanup the RT to VRF mapping */ | |
4605 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4606 | ||
c581d8b0 MK |
4607 | /* remove the RT from the RT list */ |
4608 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4609 | if (ecommunity_match(ecom, ecomdel)) { | |
4610 | ecommunity_free(&ecom); | |
4611 | node_to_del = node; | |
4612 | break; | |
4613 | } | |
4614 | } | |
4615 | ||
4616 | if (node_to_del) | |
4617 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4618 | ||
b3a4db3d | 4619 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4620 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4621 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4622 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4623 | if (is_l3vni_live(bgp_vrf)) |
4624 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4625 | } |
4626 | ||
3d0b43d7 | 4627 | /* map VRFs to its RTs and install routes matching this new RT */ |
4628 | if (is_l3vni_live(bgp_vrf)) { | |
4629 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4630 | install_routes_for_vrf(bgp_vrf); | |
4631 | } | |
c581d8b0 MK |
4632 | } |
4633 | ||
4634 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4635 | struct ecommunity *ecomadd) | |
4636 | { | |
4637 | /* remove auto-generated RT */ | |
4638 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4639 | ||
4640 | /* Add the new RT to the RT list */ | |
4641 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4642 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4643 | ||
ebdc9e64 AD |
4644 | if (is_l3vni_live(bgp_vrf)) |
4645 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4646 | } |
4647 | ||
4648 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4649 | struct ecommunity *ecomdel) | |
4650 | { | |
4651 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4652 | struct ecommunity *ecom = NULL; | |
4653 | ||
4654 | /* Remove the RT from the RT list */ | |
4655 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4656 | if (ecommunity_match(ecom, ecomdel)) { | |
4657 | ecommunity_free(&ecom); | |
4658 | node_to_del = node; | |
4659 | break; | |
4660 | } | |
4661 | } | |
4662 | ||
4663 | if (node_to_del) | |
4664 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4665 | ||
1525e99f DS |
4666 | /* |
4667 | * Temporary assert to make SA happy. | |
4668 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4669 | * which means that SA is going to complain about | |
4670 | * the list_isempty call, which doesn't NULL check. | |
4671 | * So until we get this situation cleaned up, here | |
4672 | * we are. | |
4673 | */ | |
4674 | assert(bgp_vrf->vrf_export_rtl); | |
4675 | ||
c581d8b0 | 4676 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4677 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4678 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4679 | if (is_l3vni_live(bgp_vrf)) |
4680 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4681 | } |
4682 | ||
ebdc9e64 AD |
4683 | if (is_l3vni_live(bgp_vrf)) |
4684 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4685 | } |
4686 | ||
2d48ee25 | 4687 | /* |
4688 | * Handle change to BGP router id. This is invoked twice by the change | |
4689 | * handler, first before the router id has been changed and then after | |
4690 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4691 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4692 | * will result in the routes being re-advertised. |
4693 | */ | |
d62a17ae | 4694 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4695 | { |
5394a276 CS |
4696 | struct listnode *node; |
4697 | struct bgp *bgp_vrf; | |
4698 | ||
676f83b9 | 4699 | if (withdraw) { |
4700 | ||
4701 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4702 | stored in the global table for this vrf |
4703 | */ | |
80b140af | 4704 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4705 | |
4706 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4707 | * L2-VNIs |
4708 | */ | |
d62a17ae | 4709 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4710 | (void (*)(struct hash_bucket *, |
d62a17ae | 4711 | void *))withdraw_router_id_vni, |
4712 | bgp); | |
5394a276 CS |
4713 | |
4714 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4715 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4716 | if (bgp_vrf->evpn_info->advertise_pip && | |
4717 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4718 | == INADDR_ANY)) | |
4719 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4720 | = INADDR_ANY; | |
4721 | } | |
4722 | } | |
676f83b9 | 4723 | } else { |
4724 | ||
5394a276 CS |
4725 | /* Assign new default instance router-id */ |
4726 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4727 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4728 | if (bgp_vrf->evpn_info->advertise_pip && | |
4729 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4730 | == INADDR_ANY)) { | |
4731 | bgp_vrf->evpn_info->pip_ip = | |
4732 | bgp->router_id; | |
4733 | /* advertise type-5 routes with | |
4734 | * new nexthop | |
4735 | */ | |
4736 | update_advertise_vrf_routes(bgp_vrf); | |
4737 | } | |
4738 | } | |
4739 | } | |
4740 | ||
676f83b9 | 4741 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4742 | * RD |
4743 | */ | |
80b140af | 4744 | update_router_id_vrf(bgp); |
676f83b9 | 4745 | |
4746 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4747 | * new RD |
4748 | */ | |
d62a17ae | 4749 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4750 | (void (*)(struct hash_bucket *, |
d62a17ae | 4751 | void *))update_router_id_vni, |
4752 | bgp); | |
676f83b9 | 4753 | } |
2d48ee25 | 4754 | } |
4755 | ||
bf1061d8 VB |
4756 | /* |
4757 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4758 | */ | |
4759 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4760 | { | |
4761 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4762 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4763 | void*))update_autort_vni, |
4764 | bgp); | |
4204021e PG |
4765 | if (bgp->l3vni) |
4766 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
4767 | } |
4768 | ||
90e60aa7 | 4769 | /* |
4770 | * Handle change to export RT - update and advertise local routes. | |
4771 | */ | |
d62a17ae | 4772 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4773 | { |
d62a17ae | 4774 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4775 | } |
4776 | ||
996c9314 | 4777 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4778 | { |
4779 | if (withdraw) | |
4780 | delete_withdraw_vrf_routes(bgp_vrf); | |
4781 | else | |
4782 | update_advertise_vrf_routes(bgp_vrf); | |
4783 | } | |
4784 | ||
90e60aa7 | 4785 | /* |
4786 | * Handle change to RD. This is invoked twice by the change handler, | |
4787 | * first before the RD has been changed and then after the RD has | |
4788 | * been changed. The first invocation will result in local routes | |
4789 | * of this VNI being deleted and withdrawn and the next will result | |
4790 | * in the routes being re-advertised. | |
4791 | */ | |
d62a17ae | 4792 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4793 | int withdraw) | |
90e60aa7 | 4794 | { |
d62a17ae | 4795 | if (withdraw) |
4796 | delete_withdraw_vni_routes(bgp, vpn); | |
4797 | else | |
4798 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4799 | } |
4800 | ||
4801 | /* | |
4802 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4803 | */ | |
d62a17ae | 4804 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4805 | { |
d62a17ae | 4806 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4807 | } |
4808 | ||
4809 | /* | |
4810 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4811 | * to Import RT. | |
4812 | */ | |
d62a17ae | 4813 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4814 | { |
d62a17ae | 4815 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4816 | } |
4817 | ||
b16031a2 | 4818 | /* |
b57ba6d2 | 4819 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4820 | */ |
d7c0a89a | 4821 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4822 | int len) |
b16031a2 | 4823 | { |
b57ba6d2 | 4824 | vni_t vni1, vni2; |
b16031a2 | 4825 | |
b57ba6d2 MK |
4826 | vni1 = label2vni(label); |
4827 | if (num_labels == 2) { | |
996c9314 | 4828 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4829 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4830 | } else | |
4831 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4832 | return buf; |
b16031a2 | 4833 | } |
4834 | ||
9c92b5f7 MK |
4835 | /* |
4836 | * Function to convert evpn route to json format. | |
4837 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4838 | */ | |
bd494ec5 | 4839 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4840 | { |
b682f6de | 4841 | char buf1[ETHER_ADDR_STRLEN]; |
4842 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4843 | uint8_t family; |
4844 | uint8_t prefixlen; | |
9c92b5f7 | 4845 | |
b682f6de | 4846 | if (!json) |
4847 | return; | |
9c92b5f7 | 4848 | |
44c69747 LK |
4849 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4850 | ||
4851 | switch (p->prefix.route_type) { | |
4852 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4853 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4854 | p->prefix.macip_addr.eth_tag); |
4855 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4856 | json_object_string_add(json, "mac", | |
4857 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4858 | sizeof(buf1))); | |
4859 | ||
4860 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4861 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4862 | AF_INET6; | |
4863 | prefixlen = (family == AF_INET) ? | |
4864 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4865 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4866 | buf2, PREFIX2STR_BUFFER); | |
4867 | json_object_int_add(json, "ipLen", prefixlen); | |
4868 | json_object_string_add(json, "ip", buf2); | |
4869 | } | |
4870 | break; | |
dff8f48d | 4871 | |
44c69747 LK |
4872 | case BGP_EVPN_IMET_ROUTE: |
4873 | json_object_int_add(json, "ethTag", | |
4874 | p->prefix.imet_addr.eth_tag); | |
4875 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4876 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4877 | IPV6_MAX_BITLEN; | |
4878 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4879 | PREFIX2STR_BUFFER); | |
4880 | json_object_int_add(json, "ipLen", prefixlen); | |
4881 | json_object_string_add(json, "ip", buf2); | |
4882 | break; | |
dff8f48d | 4883 | |
44c69747 LK |
4884 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4885 | json_object_int_add(json, "ethTag", | |
4886 | p->prefix.prefix_addr.eth_tag); | |
4887 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4888 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4889 | buf2, sizeof(buf2)); | |
4890 | json_object_int_add(json, "ipLen", | |
4891 | p->prefix.prefix_addr.ip_prefix_length); | |
4892 | json_object_string_add(json, "ip", buf2); | |
4893 | break; | |
4894 | ||
4895 | default: | |
4896 | break; | |
dff8f48d | 4897 | } |
9c92b5f7 MK |
4898 | } |
4899 | ||
128ea8ab | 4900 | /* |
4901 | * Encode EVPN prefix in Update (MP_REACH) | |
4902 | */ | |
5f040085 DS |
4903 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4904 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 4905 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 4906 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 4907 | { |
4908 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4909 | int len, ipa_len = 0; |
d62a17ae | 4910 | |
be92fc9f | 4911 | if (addpath_capable) |
d62a17ae | 4912 | stream_putl(s, addpath_tx_id); |
4913 | ||
4914 | /* Route type */ | |
4915 | stream_putc(s, evp->prefix.route_type); | |
4916 | ||
4917 | switch (evp->prefix.route_type) { | |
4918 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4919 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4920 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4921 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4922 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4923 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4924 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4925 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4926 | len += 3; | |
4927 | stream_putc(s, len); | |
996c9314 | 4928 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4929 | if (attr) |
c44ab6f1 | 4930 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4931 | else |
4932 | stream_put(s, 0, 10); | |
3714a385 | 4933 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4934 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4935 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4936 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4937 | if (ipa_len) /* IP */ | |
4938 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4939 | ipa_len); | |
b57ba6d2 MK |
4940 | /* 1st label is the L2 VNI */ |
4941 | stream_put(s, label, BGP_LABEL_BYTES); | |
4942 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4943 | if (ipa_len && num_labels > 1) | |
996c9314 | 4944 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4945 | break; |
4946 | ||
4947 | case BGP_EVPN_IMET_ROUTE: | |
4948 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4949 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4950 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4951 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4952 | /* Originating Router's IP Addr */ | |
3714a385 | 4953 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4954 | break; |
4955 | ||
50f74cf1 | 4956 | case BGP_EVPN_ES_ROUTE: |
4957 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4958 | stream_put(s, prd->val, 8); /* RD */ | |
4959 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4960 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4961 | /* VTEP IP */ |
4962 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4963 | break; |
4964 | ||
c44ab6f1 AK |
4965 | case BGP_EVPN_AD_ROUTE: |
4966 | /* RD, ESI, EthTag, 1 VNI */ | |
4967 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4968 | stream_putc(s, len); | |
4969 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4970 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4971 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4972 | stream_put(s, label, BGP_LABEL_BYTES); | |
4973 | break; | |
4974 | ||
d62a17ae | 4975 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4976 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4977 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4978 | break; |
4979 | ||
4980 | default: | |
4981 | break; | |
4982 | } | |
4983 | } | |
4984 | ||
4985 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4986 | struct bgp_nlri *packet, int withdraw) | |
4987 | { | |
d7c0a89a QY |
4988 | uint8_t *pnt; |
4989 | uint8_t *lim; | |
d62a17ae | 4990 | afi_t afi; |
4991 | safi_t safi; | |
d7c0a89a | 4992 | uint32_t addpath_id; |
be92fc9f | 4993 | bool addpath_capable; |
d62a17ae | 4994 | int psize = 0; |
d7c0a89a | 4995 | uint8_t rtype; |
d62a17ae | 4996 | struct prefix p; |
4997 | ||
d62a17ae | 4998 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4999 | pnt = packet->nlri; | |
5000 | lim = pnt + packet->length; | |
5001 | afi = packet->afi; | |
5002 | safi = packet->safi; | |
5003 | addpath_id = 0; | |
5004 | ||
be92fc9f | 5005 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 5006 | |
5007 | for (; pnt < lim; pnt += psize) { | |
5008 | /* Clear prefix structure. */ | |
5009 | memset(&p, 0, sizeof(struct prefix)); | |
5010 | ||
5011 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 5012 | if (addpath_capable) { |
d62a17ae | 5013 | /* When packet overflow occurs return immediately. */ |
5014 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5015 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5016 | |
a3a850a1 S |
5017 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5018 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5019 | pnt += BGP_ADDPATH_ID_LEN; |
5020 | } | |
5021 | ||
5022 | /* All EVPN NLRI types start with type and length. */ | |
5023 | if (pnt + 2 > lim) | |
513386b5 | 5024 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5025 | |
5026 | rtype = *pnt++; | |
3f54c705 | 5027 | psize = *pnt++; |
d62a17ae | 5028 | |
5029 | /* When packet overflow occur return immediately. */ | |
5030 | if (pnt + psize > lim) | |
513386b5 | 5031 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5032 | |
5033 | switch (rtype) { | |
5034 | case BGP_EVPN_MAC_IP_ROUTE: | |
5035 | if (process_type2_route(peer, afi, safi, | |
5036 | withdraw ? NULL : attr, pnt, | |
5037 | psize, addpath_id)) { | |
af4c2728 | 5038 | flog_err( |
e50f7cfd | 5039 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5040 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5041 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5042 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5043 | } |
5044 | break; | |
5045 | ||
5046 | case BGP_EVPN_IMET_ROUTE: | |
5047 | if (process_type3_route(peer, afi, safi, | |
5048 | withdraw ? NULL : attr, pnt, | |
5049 | psize, addpath_id)) { | |
af4c2728 | 5050 | flog_err( |
e50f7cfd | 5051 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5052 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5053 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5054 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5055 | } |
5056 | break; | |
5057 | ||
50f74cf1 | 5058 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5059 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5060 | withdraw ? NULL : attr, pnt, |
5061 | psize, addpath_id)) { | |
af4c2728 | 5062 | flog_err( |
e50f7cfd | 5063 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5064 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5065 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5066 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5067 | } |
5068 | break; | |
5069 | ||
c44ab6f1 AK |
5070 | case BGP_EVPN_AD_ROUTE: |
5071 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5072 | withdraw ? NULL : attr, pnt, | |
5073 | psize, addpath_id)) { | |
5074 | flog_err( | |
5075 | EC_BGP_PKT_PROCESS, | |
5076 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5077 | peer->bgp->vrf_id, peer->host, psize); | |
5078 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5079 | } | |
5080 | break; | |
5081 | ||
d62a17ae | 5082 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5083 | if (process_type5_route(peer, afi, safi, |
5084 | withdraw ? NULL : attr, pnt, | |
5085 | psize, addpath_id)) { | |
af4c2728 | 5086 | flog_err( |
e50f7cfd | 5087 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5088 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5089 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5090 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5091 | } |
5092 | break; | |
5093 | ||
5094 | default: | |
5095 | break; | |
5096 | } | |
5097 | } | |
5098 | ||
5099 | /* Packet length consistency check. */ | |
5100 | if (pnt != lim) | |
513386b5 | 5101 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5102 | |
513386b5 | 5103 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5104 | } |
5105 | ||
10ebe1ab MK |
5106 | /* |
5107 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5108 | * The mapping will be used during route processing. | |
5109 | * bgp_def: default bgp instance | |
5110 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
5111 | */ | |
5112 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5113 | { | |
f6e07e1b | 5114 | uint32_t i = 0; |
10ebe1ab MK |
5115 | struct ecommunity_val *eval = NULL; |
5116 | struct listnode *node = NULL, *nnode = NULL; | |
5117 | struct ecommunity *ecom = NULL; | |
5118 | ||
5119 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5120 | for (i = 0; i < ecom->size; i++) { | |
5121 | eval = (struct ecommunity_val *)(ecom->val | |
5122 | + (i | |
5123 | * ECOMMUNITY_SIZE)); | |
5124 | map_vrf_to_rt(bgp_vrf, eval); | |
5125 | } | |
5126 | } | |
5127 | } | |
5128 | ||
5129 | /* | |
5130 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5131 | */ | |
5132 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5133 | { | |
f6e07e1b | 5134 | uint32_t i; |
10ebe1ab MK |
5135 | struct ecommunity_val *eval; |
5136 | struct listnode *node, *nnode; | |
5137 | struct ecommunity *ecom; | |
5138 | ||
5139 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
5140 | for (i = 0; i < ecom->size; i++) { | |
5141 | struct vrf_irt_node *irt; | |
5142 | struct ecommunity_val eval_tmp; | |
5143 | ||
5144 | eval = (struct ecommunity_val *)(ecom->val | |
5145 | + (i | |
5146 | * ECOMMUNITY_SIZE)); | |
5147 | /* If using "automatic" RT, we only care about the | |
5148 | * local-admin sub-field. | |
5149 | * This is to facilitate using VNI as the RT for EBGP | |
5150 | * peering too. | |
5151 | */ | |
5152 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5153 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
5154 | BGP_VRF_IMPORT_RT_CFGD)) | |
5155 | mask_ecom_global_admin(&eval_tmp, eval); | |
5156 | ||
5157 | irt = lookup_vrf_import_rt(&eval_tmp); | |
5158 | if (irt) | |
5159 | unmap_vrf_from_rt(bgp_vrf, irt); | |
5160 | } | |
5161 | } | |
5162 | } | |
5163 | ||
5164 | ||
128ea8ab | 5165 | /* |
5166 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5167 | * The mapping will be used during route processing. | |
5168 | */ | |
d62a17ae | 5169 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5170 | { |
f6e07e1b | 5171 | uint32_t i; |
d62a17ae | 5172 | struct ecommunity_val *eval; |
5173 | struct listnode *node, *nnode; | |
5174 | struct ecommunity *ecom; | |
128ea8ab | 5175 | |
d62a17ae | 5176 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5177 | for (i = 0; i < ecom->size; i++) { | |
5178 | eval = (struct ecommunity_val *)(ecom->val | |
5179 | + (i | |
5180 | * ECOMMUNITY_SIZE)); | |
5181 | map_vni_to_rt(bgp, vpn, eval); | |
5182 | } | |
5183 | } | |
128ea8ab | 5184 | } |
5185 | ||
5186 | /* | |
5187 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5188 | */ | |
d62a17ae | 5189 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5190 | { |
f6e07e1b | 5191 | uint32_t i; |
d62a17ae | 5192 | struct ecommunity_val *eval; |
5193 | struct listnode *node, *nnode; | |
5194 | struct ecommunity *ecom; | |
128ea8ab | 5195 | |
d62a17ae | 5196 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5197 | for (i = 0; i < ecom->size; i++) { | |
5198 | struct irt_node *irt; | |
5199 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5200 | |
d62a17ae | 5201 | eval = (struct ecommunity_val *)(ecom->val |
5202 | + (i | |
5203 | * ECOMMUNITY_SIZE)); | |
5204 | /* If using "automatic" RT, we only care about the | |
5205 | * local-admin sub-field. | |
5206 | * This is to facilitate using VNI as the RT for EBGP | |
5207 | * peering too. | |
5208 | */ | |
5209 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5210 | if (!is_import_rt_configured(vpn)) | |
5211 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5212 | |
d62a17ae | 5213 | irt = lookup_import_rt(bgp, &eval_tmp); |
5214 | if (irt) | |
5215 | unmap_vni_from_rt(bgp, vpn, irt); | |
5216 | } | |
5217 | } | |
128ea8ab | 5218 | } |
5219 | ||
5220 | /* | |
5221 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5222 | * The mapping will be used during route processing. | |
5223 | */ | |
d62a17ae | 5224 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5225 | { |
c581d8b0 | 5226 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 5227 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5228 | |
d62a17ae | 5229 | /* Map RT to VNI */ |
5230 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5231 | } |
5232 | ||
5233 | /* | |
5234 | * Derive Export RT automatically for VNI. | |
5235 | */ | |
d62a17ae | 5236 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5237 | { |
c581d8b0 | 5238 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 5239 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5240 | } |
5241 | ||
676f83b9 | 5242 | /* |
5243 | * Derive RD automatically for VNI using passed information - it | |
5244 | * is of the form RouterId:unique-id-for-vni. | |
5245 | */ | |
5246 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5247 | { | |
9e97ff03 CS |
5248 | if (is_vrf_rd_configured(bgp)) |
5249 | return; | |
5250 | ||
92708db6 | 5251 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5252 | } |
5253 | ||
128ea8ab | 5254 | /* |
5255 | * Derive RD automatically for VNI using passed information - it | |
5256 | * is of the form RouterId:unique-id-for-vni. | |
5257 | */ | |
d62a17ae | 5258 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5259 | { |
c44ab6f1 | 5260 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5261 | |
d62a17ae | 5262 | vpn->prd.family = AF_UNSPEC; |
5263 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5264 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5265 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5266 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5267 | } |
5268 | ||
7df407ed CS |
5269 | /* |
5270 | * Lookup L3-VNI | |
5271 | */ | |
5272 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5273 | { | |
5274 | struct list *inst = bm->bgp; | |
5275 | struct listnode *node; | |
5276 | struct bgp *bgp_vrf; | |
5277 | ||
5278 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5279 | if (bgp_vrf->l3vni == vni) | |
5280 | return true; | |
5281 | } | |
5282 | ||
5283 | return false; | |
5284 | } | |
5285 | ||
128ea8ab | 5286 | /* |
5287 | * Lookup VNI. | |
5288 | */ | |
d62a17ae | 5289 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5290 | { |
d62a17ae | 5291 | struct bgpevpn *vpn; |
5292 | struct bgpevpn tmp; | |
128ea8ab | 5293 | |
d62a17ae | 5294 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5295 | tmp.vni = vni; | |
5296 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5297 | return vpn; | |
128ea8ab | 5298 | } |
5299 | ||
5300 | /* | |
5301 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5302 | */ | |
d62a17ae | 5303 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5304 | struct in_addr originator_ip, |
5305 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5306 | struct in_addr mcast_grp, |
5307 | ifindex_t svi_ifindex) | |
128ea8ab | 5308 | { |
d62a17ae | 5309 | struct bgpevpn *vpn; |
128ea8ab | 5310 | |
d62a17ae | 5311 | if (!bgp) |
5312 | return NULL; | |
128ea8ab | 5313 | |
d62a17ae | 5314 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5315 | |
d62a17ae | 5316 | /* Set values - RD and RT set to defaults. */ |
5317 | vpn->vni = vni; | |
5318 | vpn->originator_ip = originator_ip; | |
29c53922 | 5319 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5320 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5321 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5322 | |
d62a17ae | 5323 | /* Initialize route-target import and export lists */ |
5324 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5325 | vpn->import_rtl->cmp = |
5326 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5327 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5328 | vpn->export_rtl = list_new(); |
f4a5218d AK |
5329 | vpn->export_rtl->cmp = |
5330 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5331 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 5332 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5333 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5334 | |
d62a17ae | 5335 | /* Initialize EVPN route table. */ |
960035b2 | 5336 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5337 | |
d62a17ae | 5338 | /* Add to hash */ |
5339 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5340 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5341 | return NULL; | |
5342 | } | |
6a8657d0 | 5343 | |
021b6596 AD |
5344 | bgp_evpn_remote_ip_hash_init(vpn); |
5345 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5346 | ||
6a8657d0 MK |
5347 | /* add to l2vni list on corresponding vrf */ |
5348 | bgpevpn_link_to_l3vni(vpn); | |
5349 | ||
c44ab6f1 AK |
5350 | bgp_evpn_vni_es_init(vpn); |
5351 | ||
d62a17ae | 5352 | QOBJ_REG(vpn, bgpevpn); |
5353 | return vpn; | |
128ea8ab | 5354 | } |
5355 | ||
5356 | /* | |
5357 | * Free a given VPN - called in multiple scenarios such as zebra | |
5358 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5359 | * This just frees appropriate memory, caller should have taken other | |
5360 | * needed actions. | |
5361 | */ | |
d62a17ae | 5362 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5363 | { |
021b6596 | 5364 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 5365 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5366 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5367 | bgp_table_unlock(vpn->route_table); |
5368 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5369 | list_delete(&vpn->import_rtl); |
5370 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5371 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 5372 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 5373 | hash_release(bgp->vnihash, vpn); |
5374 | QOBJ_UNREG(vpn); | |
5375 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5376 | } |
5377 | ||
50f74cf1 | 5378 | /* |
5379 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5380 | */ |
d62a17ae | 5381 | int bgp_evpn_import_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, 1); |
128ea8ab | 5385 | } |
5386 | ||
5387 | /* | |
50f74cf1 | 5388 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5389 | */ |
d62a17ae | 5390 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5391 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5392 | { |
40381db7 | 5393 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5394 | } |
5395 | ||
db0e1937 MK |
5396 | /* filter routes which have martian next hops */ |
5397 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5398 | { | |
0291c246 MK |
5399 | afi_t afi; |
5400 | safi_t safi; | |
9bcb3eef | 5401 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5402 | struct bgp_table *table; |
40381db7 | 5403 | struct bgp_path_info *pi; |
db0e1937 MK |
5404 | |
5405 | afi = AFI_L2VPN; | |
5406 | safi = SAFI_EVPN; | |
5407 | ||
5408 | /* Walk entire global routing table and evaluate routes which could be | |
5409 | * imported into this VPN. Note that we cannot just look at the routes | |
5410 | * for the VNI's RD - | |
5411 | * remote routes applicable for this VNI could have any RD. | |
5412 | */ | |
5413 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5414 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5415 | rd_dest = bgp_route_next(rd_dest)) { | |
5416 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5417 | if (!table) |
5418 | continue; | |
5419 | ||
9bcb3eef DS |
5420 | for (dest = bgp_table_top(table); dest; |
5421 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5422 | |
9bcb3eef | 5423 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5424 | pi = pi->next) { |
db0e1937 MK |
5425 | |
5426 | /* Consider "valid" remote routes applicable for | |
5427 | * this VNI. */ | |
40381db7 DS |
5428 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5429 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5430 | continue; |
9bcb3eef DS |
5431 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5432 | pi->sub_type, pi->attr, | |
5433 | dest)) { | |
b54892e0 | 5434 | const struct prefix *p = |
9bcb3eef | 5435 | bgp_dest_get_prefix(dest); |
db0e1937 | 5436 | |
b54892e0 DS |
5437 | if (bgp_debug_update(pi->peer, p, NULL, |
5438 | 1)) { | |
5439 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5440 | |
b54892e0 | 5441 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5442 | attr_str, |
5443 | sizeof(attr_str)); | |
db0e1937 | 5444 | |
db0e1937 | 5445 | zlog_debug( |
56ca3b5b | 5446 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5447 | bgp->vrf_id, dest, |
db0e1937 | 5448 | attr_str); |
b54892e0 | 5449 | } |
db0e1937 | 5450 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5451 | p, pi); |
db0e1937 | 5452 | |
9bcb3eef | 5453 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5454 | safi); |
db0e1937 | 5455 | } |
db0e1937 MK |
5456 | } |
5457 | } | |
5458 | } | |
5459 | ||
5460 | return 0; | |
5461 | } | |
5462 | ||
128ea8ab | 5463 | /* |
5464 | * Handle del of a local MACIP. | |
5465 | */ | |
d62a17ae | 5466 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5467 | struct ipaddr *ip, int state) |
128ea8ab | 5468 | { |
d62a17ae | 5469 | struct bgpevpn *vpn; |
5470 | struct prefix_evpn p; | |
9bcb3eef | 5471 | struct bgp_dest *dest; |
128ea8ab | 5472 | |
d62a17ae | 5473 | /* Lookup VNI hash - should exist. */ |
5474 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5475 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5476 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5477 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5478 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5479 | return -1; | |
5480 | } | |
128ea8ab | 5481 | |
d62a17ae | 5482 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5483 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5484 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5485 | delete_evpn_route(bgp, vpn, &p); | |
5486 | } else { | |
5487 | /* Re-instate the current remote best path if any */ | |
9bcb3eef | 5488 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
e71ad4b6 | 5489 | if (dest) { |
9bcb3eef | 5490 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
5491 | bgp_dest_unlock_node(dest); |
5492 | } | |
ec0ab544 | 5493 | } |
128ea8ab | 5494 | |
d62a17ae | 5495 | return 0; |
128ea8ab | 5496 | } |
5497 | ||
5498 | /* | |
5499 | * Handle add of a local MACIP. | |
5500 | */ | |
d62a17ae | 5501 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5502 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5503 | { |
d62a17ae | 5504 | struct bgpevpn *vpn; |
5505 | struct prefix_evpn p; | |
128ea8ab | 5506 | |
d62a17ae | 5507 | /* Lookup VNI hash - should exist. */ |
5508 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5509 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5510 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5511 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5512 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5513 | return -1; | |
5514 | } | |
128ea8ab | 5515 | |
d62a17ae | 5516 | /* Create EVPN type-2 route and schedule for processing. */ |
5517 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5518 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 5519 | flog_err( |
e50f7cfd | 5520 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 5521 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 5522 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5523 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5524 | ? "sticky gateway" | |
5525 | : "", | |
c0d72166 | 5526 | mac, ip, flags); |
d62a17ae | 5527 | return -1; |
5528 | } | |
128ea8ab | 5529 | |
d62a17ae | 5530 | return 0; |
128ea8ab | 5531 | } |
5532 | ||
e3b78da8 | 5533 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5534 | struct bgp *bgp_vrf) |
5535 | { | |
e3b78da8 | 5536 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5537 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5538 | |
5e53dce3 T |
5539 | bgp_evpn = bgp_get_evpn(); |
5540 | assert(bgp_evpn); | |
6a8657d0 | 5541 | |
6a8657d0 MK |
5542 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5543 | bgpevpn_link_to_l3vni(vpn); | |
5544 | } | |
5545 | ||
14e814ea CS |
5546 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5547 | struct ethaddr *svi_rmac, | |
5548 | struct ethaddr *vrr_rmac, | |
0483af6e | 5549 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5550 | ifindex_t svi_ifindex, |
5551 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5552 | { |
5553 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5554 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5555 | struct listnode *node = NULL; |
5556 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5557 | as_t as = 0; |
5558 | ||
3621ebc5 | 5559 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5560 | * auto-creatio |
5561 | */ | |
5e53dce3 T |
5562 | bgp_evpn = bgp_get_evpn(); |
5563 | if (!bgp_evpn) { | |
af4c2728 | 5564 | flog_err( |
e50f7cfd | 5565 | EC_BGP_NO_DFLT, |
3621ebc5 | 5566 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5567 | l3vni); |
fe1dc5a3 MK |
5568 | return -1; |
5569 | } | |
5e53dce3 | 5570 | as = bgp_evpn->as; |
fe1dc5a3 | 5571 | |
0437e105 | 5572 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5573 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5574 | if (!bgp_vrf) { |
5575 | ||
5576 | int ret = 0; | |
5577 | ||
5d5393b9 DL |
5578 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5579 | vrf_id == VRF_DEFAULT | |
5580 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5581 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5582 | switch (ret) { |
fe1dc5a3 | 5583 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5584 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
5585 | "BGP instance is already running; AS is %u", |
5586 | as); | |
fe1dc5a3 MK |
5587 | return -1; |
5588 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5589 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 5590 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
5591 | return -1; |
5592 | } | |
5593 | ||
5594 | /* mark as auto created */ | |
5595 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5596 | } | |
5597 | ||
0483af6e | 5598 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5599 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5600 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5601 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5602 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5603 | |
14e814ea CS |
5604 | /* copy anycast MAC from VRR MAC */ |
5605 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5606 | /* copy sys RMAC from SVI MAC */ | |
5607 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5608 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5609 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5610 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5611 | ||
c0d72166 DS |
5612 | if (bgp_debug_zebra(NULL)) |
5613 | zlog_debug( | |
5614 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
5615 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
5616 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5617 | : "disable", | |
5618 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
5619 | &bgp_vrf->evpn_info->pip_rmac_static, | |
5620 | is_anycast_mac ? "Enable" : "Disable"); | |
5621 | ||
c48d9f5f | 5622 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5623 | if (filter) { |
c48d9f5f MK |
5624 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5625 | ||
10f70510 AD |
5626 | /* |
5627 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5628 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5629 | * that explicitly. | |
5630 | */ | |
5631 | } else { | |
5632 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5633 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5634 | ||
5635 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5636 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5637 | ||
5638 | /* | |
5639 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5640 | * flag, update all MACIP routes in this VNI | |
5641 | */ | |
5642 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5643 | update_all_type2_routes(bgp_evpn, vpn); | |
5644 | } | |
5645 | } | |
5646 | } | |
5647 | ||
530e8a6e | 5648 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5649 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5650 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5651 | else |
5652 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5653 | ||
c581d8b0 MK |
5654 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5655 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5656 | |
5657 | /* auto derive RD */ | |
676f83b9 | 5658 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5659 | |
6a8657d0 | 5660 | /* link all corresponding l2vnis */ |
5e53dce3 | 5661 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5662 | (void (*)(struct hash_bucket *, |
996c9314 | 5663 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5664 | bgp_vrf); |
5665 | ||
c48d9f5f MK |
5666 | /* Only update all corresponding type-2 routes if we are advertising two |
5667 | * labels along with type-2 routes | |
5668 | */ | |
5669 | if (!filter) | |
5670 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5671 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5672 | |
06d2e8f3 MK |
5673 | /* advertise type-5 routes if needed */ |
5674 | update_advertise_vrf_routes(bgp_vrf); | |
5675 | ||
5ba238b7 MK |
5676 | /* install all remote routes belonging to this l3vni into correspondng |
5677 | * vrf */ | |
5678 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5679 | |
5680 | return 0; | |
5681 | } | |
5682 | ||
996c9314 | 5683 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5684 | { |
5685 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5686 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5687 | struct listnode *node = NULL; |
18abc1eb | 5688 | struct listnode *next = NULL; |
f1f8b53c | 5689 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5690 | |
5691 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5692 | if (!bgp_vrf) { | |
af4c2728 | 5693 | flog_err( |
e50f7cfd | 5694 | EC_BGP_NO_DFLT, |
996c9314 LB |
5695 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5696 | l3vni); | |
fe1dc5a3 MK |
5697 | return -1; |
5698 | } | |
5699 | ||
5e53dce3 T |
5700 | bgp_evpn = bgp_get_evpn(); |
5701 | if (!bgp_evpn) { | |
af4c2728 | 5702 | flog_err( |
e50f7cfd | 5703 | EC_BGP_NO_DFLT, |
3621ebc5 | 5704 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5705 | l3vni); |
f1f8b53c MK |
5706 | return -1; |
5707 | } | |
5708 | ||
d846168d | 5709 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5710 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5711 | * routes. This will uninstalling the routes from zebra and decremnt the |
5712 | * bgp info count. | |
523cafc4 | 5713 | */ |
d846168d | 5714 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5715 | |
06d2e8f3 MK |
5716 | /* delete/withdraw all type-5 routes */ |
5717 | delete_withdraw_vrf_routes(bgp_vrf); | |
5718 | ||
fe1dc5a3 MK |
5719 | /* remove the l3vni from vrf instance */ |
5720 | bgp_vrf->l3vni = 0; | |
5721 | ||
5722 | /* remove the Rmac from the BGP vrf */ | |
5723 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5724 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5725 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5726 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5727 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5728 | |
530e8a6e | 5729 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5730 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5731 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5732 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5733 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5734 | } |
530e8a6e CS |
5735 | |
5736 | /* remove default export RT */ | |
5737 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5738 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5739 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5740 | } |
fe1dc5a3 | 5741 | |
f1f8b53c | 5742 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5743 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5744 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5745 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5746 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5747 | } |
5748 | } | |
fe1dc5a3 | 5749 | |
18abc1eb | 5750 | /* If any L2VNIs point to this instance, unlink them. */ |
5751 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5752 | bgpevpn_unlink_from_l3vni(vpn); | |
5753 | ||
ff9d54fb CS |
5754 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5755 | ||
fe1dc5a3 MK |
5756 | /* Delete the instance if it was autocreated */ |
5757 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5758 | bgp_delete(bgp_vrf); | |
5759 | ||
5760 | return 0; | |
5761 | } | |
5762 | ||
128ea8ab | 5763 | /* |
5764 | * Handle del of a local VNI. | |
5765 | */ | |
d62a17ae | 5766 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5767 | { |
d62a17ae | 5768 | struct bgpevpn *vpn; |
128ea8ab | 5769 | |
d62a17ae | 5770 | /* Locate VNI hash */ |
5771 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5772 | if (!vpn) { | |
1e00627b | 5773 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5774 | flog_warn( |
e50f7cfd | 5775 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5776 | "%u: VNI hash entry for VNI %u not found at DEL", |
5777 | bgp->vrf_id, vni); | |
d62a17ae | 5778 | return 0; |
5779 | } | |
128ea8ab | 5780 | |
d62a17ae | 5781 | /* Remove all local EVPN routes and schedule for processing (to |
5782 | * withdraw from peers). | |
5783 | */ | |
5784 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5785 | |
021b6596 AD |
5786 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
5787 | ||
9daa5d47 | 5788 | vpn->svi_ifindex = 0; |
db0e1937 MK |
5789 | /* |
5790 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5791 | */ | |
5792 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5793 | ||
d62a17ae | 5794 | /* Clear "live" flag and see if hash needs to be freed. */ |
5795 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5796 | if (!is_vni_configured(vpn)) | |
5797 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5798 | |
d62a17ae | 5799 | return 0; |
128ea8ab | 5800 | } |
5801 | ||
5802 | /* | |
d1911c26 | 5803 | * Handle add (or update) of a local VNI. The VNI changes we care |
5804 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5805 | */ |
d62a17ae | 5806 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5807 | struct in_addr originator_ip, |
5808 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5809 | struct in_addr mcast_grp, |
5810 | ifindex_t svi_ifindex) | |
d62a17ae | 5811 | { |
5812 | struct bgpevpn *vpn; | |
5813 | struct prefix_evpn p; | |
5814 | ||
d62a17ae | 5815 | /* Lookup VNI. If present and no change, exit. */ |
5816 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5817 | if (vpn) { |
29c53922 | 5818 | |
d1911c26 | 5819 | if (is_vni_live(vpn) |
5820 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5821 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
5822 | && vpn->tenant_vrf_id == tenant_vrf_id |
5823 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 5824 | /* Probably some other param has changed that we don't |
5825 | * care about. */ | |
5826 | return 0; | |
5827 | ||
76d07c7a AK |
5828 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5829 | ||
021b6596 AD |
5830 | if (vpn->svi_ifindex != svi_ifindex) { |
5831 | ||
5832 | /* | |
5833 | * Unresolve all the gateway IP nexthops for this VNI | |
5834 | * for old SVI | |
5835 | */ | |
dc6cef73 AD |
5836 | bgp_evpn_remote_ip_hash_iterate( |
5837 | vpn, | |
5838 | (void (*)(struct hash_bucket *, void *)) | |
5839 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
5840 | vpn); |
5841 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
5842 | vpn->svi_ifindex = svi_ifindex; | |
5843 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
5844 | ||
5845 | /* | |
5846 | * Resolve all the gateway IP nexthops for this VNI | |
5847 | * for new SVI | |
5848 | */ | |
dc6cef73 AD |
5849 | bgp_evpn_remote_ip_hash_iterate( |
5850 | vpn, | |
5851 | (void (*)(struct hash_bucket *, void *)) | |
5852 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
5853 | vpn); |
5854 | } | |
9daa5d47 | 5855 | |
d1911c26 | 5856 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 5857 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
5858 | |
5859 | /* | |
5860 | * Unresolve all the gateway IP nexthops for this VNI | |
5861 | * in old tenant vrf | |
5862 | */ | |
dc6cef73 AD |
5863 | bgp_evpn_remote_ip_hash_iterate( |
5864 | vpn, | |
5865 | (void (*)(struct hash_bucket *, void *)) | |
5866 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 5867 | vpn); |
6a8657d0 | 5868 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 5869 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 5870 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
5871 | |
5872 | /* | |
5873 | * Resolve all the gateway IP nexthops for this VNI | |
5874 | * in new tenant vrf | |
5875 | */ | |
dc6cef73 AD |
5876 | bgp_evpn_remote_ip_hash_iterate( |
5877 | vpn, | |
5878 | (void (*)(struct hash_bucket *, void *)) | |
5879 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 5880 | vpn); |
6a8657d0 | 5881 | } |
29c53922 | 5882 | |
d1911c26 | 5883 | /* If tunnel endpoint IP has changed, update (and delete prior |
5884 | * type-3 route, if needed.) | |
5885 | */ | |
5886 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5887 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5888 | |
d1911c26 | 5889 | /* Update all routes with new endpoint IP and/or export RT |
5890 | * for VRFs | |
5891 | */ | |
5892 | if (is_vni_live(vpn)) | |
5893 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5894 | } |
5895 | ||
5896 | /* Create or update as appropriate. */ | |
5897 | if (!vpn) { | |
76d07c7a | 5898 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
9daa5d47 | 5899 | mcast_grp, svi_ifindex); |
d62a17ae | 5900 | if (!vpn) { |
af4c2728 | 5901 | flog_err( |
e50f7cfd | 5902 | EC_BGP_VNI, |
d62a17ae | 5903 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5904 | bgp->vrf_id, vni); | |
5905 | return -1; | |
5906 | } | |
5907 | } | |
5908 | ||
db0e1937 | 5909 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5910 | if (is_vni_live(vpn)) |
5911 | return 0; | |
5912 | ||
d62a17ae | 5913 | /* Mark as "live" */ |
5914 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5915 | ||
db0e1937 MK |
5916 | /* tunnel is now active, add tunnel-ip to db */ |
5917 | bgp_tip_add(bgp, &originator_ip); | |
5918 | ||
5919 | /* filter routes as nexthop database has changed */ | |
5920 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5921 | ||
fd069644 DS |
5922 | /* |
5923 | * Create EVPN type-3 route and schedule for processing. | |
5924 | * | |
5925 | * RT-3 only if doing head-end replication | |
5926 | */ | |
833b8a50 AK |
5927 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5928 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5929 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5930 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5931 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5932 | "%u: Type3 route creation failure for VNI %u", | |
5933 | bgp->vrf_id, vni); | |
5934 | return -1; | |
5935 | } | |
d62a17ae | 5936 | } |
5937 | ||
5938 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5939 | * VNI, | |
5940 | * install them. | |
5941 | */ | |
5942 | install_routes_for_vni(bgp, vpn); | |
5943 | ||
d7d97010 MK |
5944 | /* If we are advertising gateway mac-ip |
5945 | It needs to be conveyed again to zebra */ | |
5946 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5947 | ||
df070e6f CS |
5948 | /* advertise svi mac-ip knob to zebra */ |
5949 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5950 | ||
d62a17ae | 5951 | return 0; |
b18825eb | 5952 | } |
14c1a7bf | 5953 | |
fd069644 DS |
5954 | /* |
5955 | * Handle change in setting for BUM handling. The supported values | |
5956 | * are head-end replication and dropping all BUM packets. Any change | |
5957 | * should be registered with zebra. Also, if doing head-end replication, | |
5958 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5959 | * to be dropped, the RT-3s must be withdrawn. | |
5960 | */ | |
5961 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5962 | { | |
5963 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5964 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5965 | "Flooding" : "Flooding Disabled"); | |
5966 | ||
5967 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5968 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5969 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5970 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5971 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5972 | } | |
5973 | ||
7724c0a1 | 5974 | /* |
5975 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5976 | * EVPN routes from peers. | |
5977 | */ | |
d62a17ae | 5978 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5979 | { |
e3b78da8 | 5980 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5981 | void *))cleanup_vni_on_disable, |
5982 | bgp); | |
7724c0a1 | 5983 | } |
5984 | ||
14c1a7bf | 5985 | /* |
5986 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5987 | * BGP instance (default) is being freed. | |
5988 | */ | |
d62a17ae | 5989 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5990 | { |
1525e99f | 5991 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5992 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5993 | bgp); |
5994 | ||
5995 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5996 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5997 | |
5998 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5999 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 6000 | |
021b6596 AD |
6001 | hash_free(bgp->vni_svi_hash); |
6002 | bgp->vni_svi_hash = NULL; | |
1525e99f | 6003 | hash_free(bgp->vnihash); |
d62a17ae | 6004 | bgp->vnihash = NULL; |
1525e99f | 6005 | |
6a154c88 DL |
6006 | list_delete(&bgp->vrf_import_rtl); |
6007 | list_delete(&bgp->vrf_export_rtl); | |
6008 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6009 | } |
6010 | ||
6011 | /* | |
6012 | * Initialization for EVPN | |
6013 | * Create | |
6014 | * VNI hash table | |
6015 | * hash for RT to VNI | |
14c1a7bf | 6016 | */ |
d62a17ae | 6017 | void bgp_evpn_init(struct bgp *bgp) |
6018 | { | |
6019 | bgp->vnihash = | |
6020 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
6021 | bgp->vni_svi_hash = |
6022 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
6023 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 6024 | bgp->import_rt_hash = |
6025 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6026 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6027 | bgp->vrf_import_rt_hash = |
6028 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6029 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6030 | bgp->vrf_import_rtl = list_new(); |
6031 | bgp->vrf_import_rtl->cmp = | |
f4a5218d AK |
6032 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6033 | bgp->vrf_import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
c581d8b0 MK |
6034 | bgp->vrf_export_rtl = list_new(); |
6035 | bgp->vrf_export_rtl->cmp = | |
f4a5218d AK |
6036 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; |
6037 | bgp->vrf_export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
6a8657d0 | 6038 | bgp->l2vnis = list_new(); |
64465785 | 6039 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6040 | /* By default Duplicate Address Dection is enabled. |
6041 | * Max-moves (N) 5, detection time (M) 180 | |
6042 | * default action is warning-only | |
6043 | * freeze action permanently freezes address, | |
6044 | * and freeze time (auto-recovery) is disabled. | |
6045 | */ | |
6046 | if (bgp->evpn_info) { | |
6047 | bgp->evpn_info->dup_addr_detect = true; | |
6048 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6049 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6050 | bgp->evpn_info->dad_freeze = false; | |
6051 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6052 | /* Initialize zebra vxlan */ |
6053 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6054 | /* Enable PIP feature by default for bgp vrf instance */ |
6055 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6056 | struct bgp *bgp_default; | |
6057 | ||
6058 | bgp->evpn_info->advertise_pip = true; | |
6059 | bgp_default = bgp_get_default(); | |
6060 | if (bgp_default) | |
6061 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6062 | } | |
85c8d83b | 6063 | } |
fd069644 DS |
6064 | |
6065 | /* Default BUM handling is to do head-end replication. */ | |
6066 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6067 | |
6068 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6069 | } |
10ebe1ab MK |
6070 | |
6071 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6072 | { | |
6073 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6074 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6075 | } |
44c69747 LK |
6076 | |
6077 | /* | |
6078 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6079 | */ | |
5f040085 | 6080 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6081 | { |
6082 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6083 | ||
6084 | if (!pfx || pfx->family != AF_EVPN) | |
6085 | return 0; | |
6086 | ||
6087 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6088 | return 0; | |
6089 | ||
6090 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6091 | } | |
7c312383 AD |
6092 | |
6093 | /* | |
6094 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6095 | */ | |
5a1ae2c2 | 6096 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6097 | { |
6098 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6099 | ||
6100 | /* | |
e11329ca | 6101 | * EVPN routes should be marked as valid only if the nexthop is |
6102 | * reachable. Only if this happens, the route should be imported | |
6103 | * (into VNI or VRF routing tables) and/or advertised. | |
6104 | * Note: This is currently applied for EVPN type-2, type-3 and | |
6105 | * type-5 routes. It may be tweaked later on for other routes, or | |
6106 | * even removed completely when all routes are handled. | |
7c312383 | 6107 | */ |
fa46a5cd AK |
6108 | if (pfx && pfx->family == AF_EVPN |
6109 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6110 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6111 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6112 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6113 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6114 | return true; |
6115 | ||
6116 | return false; | |
6117 | } | |
021b6596 AD |
6118 | |
6119 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6120 | { | |
6121 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6122 | struct evpn_remote_ip *ip; | |
6123 | ||
6124 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6125 | *ip = *key; | |
6126 | ip->macip_path_list = list_new(); | |
6127 | ||
6128 | return ip; | |
6129 | } | |
6130 | ||
6131 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6132 | { | |
6133 | const struct evpn_remote_ip *ip = p; | |
6134 | const struct ipaddr *addr = &ip->addr; | |
6135 | ||
6136 | if (IS_IPADDR_V4(addr)) | |
6137 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6138 | ||
6139 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6140 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6141 | } | |
6142 | ||
6143 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6144 | { | |
6145 | const struct evpn_remote_ip *ip1 = p1; | |
6146 | const struct evpn_remote_ip *ip2 = p2; | |
6147 | ||
761cc919 | 6148 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6149 | } |
6150 | ||
6151 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6152 | { | |
dc6cef73 AD |
6153 | if (!evpn_resolve_overlay_index()) |
6154 | return; | |
6155 | ||
021b6596 AD |
6156 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6157 | bgp_evpn_remote_ip_hash_cmp, | |
6158 | "BGP EVPN remote IP hash"); | |
6159 | } | |
6160 | ||
6161 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6162 | { | |
6163 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6164 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6165 | ||
6166 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6167 | ||
6168 | list_delete(&ip->macip_path_list); | |
6169 | ||
6170 | hash_release(vpn->remote_ip_hash, ip); | |
6171 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6172 | } | |
6173 | ||
6174 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6175 | { | |
dc6cef73 | 6176 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6177 | return; |
6178 | ||
6179 | hash_iterate(vpn->remote_ip_hash, | |
6180 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6181 | vpn); | |
6182 | ||
6183 | hash_free(vpn->remote_ip_hash); | |
6184 | vpn->remote_ip_hash = NULL; | |
6185 | } | |
6186 | ||
6187 | /* Add a remote MAC/IP route to hash table */ | |
6188 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6189 | struct bgp_path_info *pi) | |
6190 | { | |
6191 | struct evpn_remote_ip tmp; | |
6192 | struct evpn_remote_ip *ip; | |
6193 | struct prefix_evpn *evp; | |
6194 | ||
dc6cef73 AD |
6195 | if (!evpn_resolve_overlay_index()) |
6196 | return; | |
6197 | ||
6198 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6199 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6200 | return; | |
6201 | ||
021b6596 AD |
6202 | evp = (struct prefix_evpn *)&pi->net->p; |
6203 | ||
6204 | if (evp->family != AF_EVPN | |
6205 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6206 | || is_evpn_prefix_ipaddr_none(evp)) | |
6207 | return; | |
6208 | ||
6209 | tmp.addr = evp->prefix.macip_addr.ip; | |
6210 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6211 | if (ip) { | |
6212 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6213 | return; | |
6214 | (void)listnode_add(ip->macip_path_list, pi); | |
6215 | return; | |
6216 | } | |
6217 | ||
6218 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
6219 | if (!ip) | |
6220 | return; | |
6221 | ||
6222 | (void)listnode_add(ip->macip_path_list, pi); | |
6223 | ||
6224 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6225 | } | |
6226 | ||
6227 | /* Delete a remote MAC/IP route from hash table */ | |
6228 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6229 | struct bgp_path_info *pi) | |
6230 | { | |
6231 | struct evpn_remote_ip tmp; | |
6232 | struct evpn_remote_ip *ip; | |
6233 | struct prefix_evpn *evp; | |
6234 | ||
dc6cef73 AD |
6235 | if (!evpn_resolve_overlay_index()) |
6236 | return; | |
6237 | ||
021b6596 AD |
6238 | evp = (struct prefix_evpn *)&pi->net->p; |
6239 | ||
6240 | if (evp->family != AF_EVPN | |
6241 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6242 | || is_evpn_prefix_ipaddr_none(evp)) | |
6243 | return; | |
6244 | ||
6245 | tmp.addr = evp->prefix.macip_addr.ip; | |
6246 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6247 | if (ip == NULL) | |
6248 | return; | |
6249 | ||
6250 | listnode_delete(ip->macip_path_list, pi); | |
6251 | ||
6252 | if (ip->macip_path_list->count == 0) { | |
6253 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6254 | hash_release(vpn->remote_ip_hash, ip); | |
6255 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6256 | } | |
6257 | } | |
6258 | ||
dc6cef73 AD |
6259 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6260 | void (*func)(struct hash_bucket *, | |
6261 | void *), | |
6262 | void *arg) | |
6263 | { | |
6264 | if (!evpn_resolve_overlay_index()) | |
6265 | return; | |
6266 | ||
6267 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6268 | } | |
6269 | ||
021b6596 AD |
6270 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6271 | { | |
6272 | char buf[INET6_ADDRSTRLEN]; | |
6273 | char buf2[EVPN_ROUTE_STRLEN]; | |
6274 | struct prefix_evpn *evp; | |
6275 | ||
6276 | struct listnode *node = NULL; | |
6277 | struct bgp_path_info *pi = NULL; | |
6278 | struct vty *vty = (struct vty *)args; | |
6279 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6280 | ||
6281 | vty_out(vty, " Remote IP: %s\n", | |
6282 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6283 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
6284 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) { | |
6285 | evp = (struct prefix_evpn *)&pi->net->p; | |
6286 | prefix2str(evp, buf2, sizeof(buf2)); | |
6287 | vty_out(vty, " %s\n", buf2); | |
6288 | } | |
6289 | } | |
6290 | ||
6291 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6292 | { | |
6293 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6294 | struct vty *vty = (struct vty *)args; | |
6295 | ||
6296 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6297 | bgp_evpn_remote_ip_hash_iterate( |
6298 | vpn, | |
021b6596 AD |
6299 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6300 | vty); | |
6301 | vty_out(vty, "\n"); | |
6302 | } | |
6303 | ||
6304 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6305 | void *args) | |
6306 | { | |
6307 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6308 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6309 | ||
6310 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6311 | } | |
6312 | ||
6313 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6314 | void *args) | |
6315 | { | |
6316 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6317 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6318 | ||
6319 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6320 | } | |
6321 | ||
6322 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6323 | { | |
6324 | const struct bgpevpn *vpn = p; | |
6325 | ||
6326 | return jhash_1word(vpn->svi_ifindex, 0); | |
6327 | } | |
6328 | ||
6329 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6330 | { | |
6331 | const struct bgpevpn *vpn1 = p1; | |
6332 | const struct bgpevpn *vpn2 = p2; | |
6333 | ||
6334 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6335 | } | |
6336 | ||
6337 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
6338 | ifindex_t svi) | |
6339 | { | |
6340 | struct bgpevpn *vpn; | |
6341 | struct bgpevpn tmp; | |
6342 | ||
6343 | memset(&tmp, 0, sizeof(struct bgpevpn)); | |
6344 | tmp.svi_ifindex = svi; | |
6345 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
6346 | return vpn; | |
6347 | } | |
6348 | ||
6349 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
6350 | { | |
6351 | if (vpn->svi_ifindex == 0) | |
6352 | return; | |
6353 | ||
6354 | hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); | |
6355 | } | |
6356 | ||
6357 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
6358 | struct bgpevpn *vpn) | |
6359 | { | |
6360 | if (vpn->svi_ifindex == 0) | |
6361 | return; | |
6362 | ||
6363 | hash_release(bgp->vni_svi_hash, vpn); | |
6364 | } | |
6365 | ||
6366 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
6367 | { | |
6368 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
6369 | struct vty *vty = (struct vty *)args; | |
6370 | ||
6371 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
6372 | } | |
6373 | ||
6374 | /* | |
6375 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
6376 | * gateway IP overlay index. | |
6377 | * This function returns true if there is a remote MAC/IP route for the gateway | |
6378 | * IP in the EVI of the nexthop SVI. | |
6379 | */ | |
6380 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
6381 | { | |
6382 | struct bgp *bgp_evpn = NULL; | |
6383 | struct bgpevpn *vpn = NULL; | |
6384 | struct evpn_remote_ip tmp; | |
6385 | struct prefix *p; | |
6386 | ||
dc6cef73 AD |
6387 | if (!evpn_resolve_overlay_index()) |
6388 | return false; | |
6389 | ||
021b6596 AD |
6390 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
6391 | return false; | |
6392 | ||
6393 | bgp_evpn = bgp_get_evpn(); | |
6394 | if (!bgp_evpn) | |
6395 | return false; | |
6396 | ||
6397 | /* | |
6398 | * Gateway IP is resolved by nht over SVI interface. | |
6399 | * Use this SVI to find corresponding EVI(L2 context) | |
6400 | */ | |
6401 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
6402 | if (!vpn) | |
6403 | return false; | |
6404 | ||
6405 | if (vpn->bgp_vrf != bnc->bgp) | |
6406 | return false; | |
6407 | ||
6408 | /* | |
6409 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
6410 | * which stores all the remote IP addresses received via MAC/IP routes | |
6411 | * in this EVI | |
6412 | */ | |
6413 | memset(&tmp, 0, sizeof(struct evpn_remote_ip)); | |
6414 | ||
6415 | p = &bnc->prefix; | |
6416 | if (p->family == AF_INET) { | |
6417 | tmp.addr.ipa_type = IPADDR_V4; | |
6418 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
6419 | sizeof(struct in_addr)); | |
6420 | } else if (p->family == AF_INET6) { | |
6421 | tmp.addr.ipa_type = IPADDR_V6; | |
6422 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
6423 | sizeof(struct in6_addr)); | |
6424 | } else | |
6425 | return false; | |
6426 | ||
6427 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
6428 | return false; | |
6429 | ||
6430 | return true; | |
6431 | } | |
6432 | ||
6433 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
6434 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
6435 | struct ipaddr *addr, | |
6436 | bool resolve) | |
6437 | { | |
6438 | afi_t afi; | |
6439 | struct prefix p; | |
6440 | struct bgp_nexthop_cache *bnc; | |
6441 | struct bgp_nexthop_cache_head *tree = NULL; | |
6442 | ||
6443 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
6444 | return; | |
6445 | ||
6446 | memset(&p, 0, sizeof(struct prefix)); | |
6447 | ||
6448 | if (addr->ipa_type == IPADDR_V4) { | |
6449 | afi = AFI_IP; | |
6450 | p.family = AF_INET; | |
6451 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
6452 | sizeof(struct in_addr)); | |
6453 | p.prefixlen = IPV4_MAX_BITLEN; | |
6454 | } else if (addr->ipa_type == IPADDR_V6) { | |
6455 | afi = AFI_IP6; | |
6456 | p.family = AF_INET6; | |
6457 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
6458 | sizeof(struct in6_addr)); | |
6459 | p.prefixlen = IPV6_MAX_BITLEN; | |
6460 | } else | |
6461 | return; | |
6462 | ||
6463 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
6464 | bnc = bnc_find(tree, &p, 0); | |
6465 | ||
6466 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
6467 | return; | |
6468 | ||
6469 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
6470 | return; | |
6471 | ||
6472 | if (BGP_DEBUG(nht, NHT)) { | |
6473 | char buf[PREFIX2STR_BUFFER]; | |
6474 | ||
6475 | prefix2str(&bnc->prefix, buf, sizeof(buf)); | |
6476 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %s", | |
6477 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, | |
6478 | vpn->vni, (resolve ? "add" : "delete"), buf); | |
6479 | } | |
6480 | ||
6481 | /* | |
6482 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
6483 | * Set nexthop as valid only if it is already L3 reachable | |
6484 | */ | |
6485 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
6486 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6487 | bnc->flags |= BGP_NEXTHOP_VALID; | |
6488 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6489 | evaluate_paths(bnc); | |
6490 | } | |
6491 | ||
6492 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
6493 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
6494 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
6495 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
6496 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
6497 | evaluate_paths(bnc); | |
6498 | } | |
6499 | } | |
6500 | ||
dc6cef73 AD |
6501 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
6502 | void *arg) | |
6503 | { | |
6504 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6505 | struct bgp_dest *dest; | |
6506 | struct bgp_path_info *pi; | |
6507 | ||
6508 | bgp_evpn_remote_ip_hash_init(vpn); | |
6509 | ||
6510 | for (dest = bgp_table_top(vpn->route_table); dest; | |
6511 | dest = bgp_route_next(dest)) | |
6512 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
6513 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
6514 | } | |
6515 | ||
6516 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
6517 | void *arg) | |
6518 | { | |
6519 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6520 | ||
6521 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
6522 | } |