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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 | |
ca337b46 | 65 | DEFINE_MTYPE_STATIC(BGPD, VRF_ROUTE_TARGET, "L3 Route Target"); |
128ea8ab | 66 | |
67 | /* | |
68 | * Static function declarations | |
69 | */ | |
021b6596 AD |
70 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *evpn); |
71 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *evpn); | |
72 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
73 | struct bgp_path_info *pi); | |
74 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
75 | struct bgp_path_info *pi); | |
dc6cef73 AD |
76 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
77 | void (*func)(struct hash_bucket *, | |
78 | void *), | |
79 | void *arg); | |
021b6596 AD |
80 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn); |
81 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
82 | struct bgpevpn *vpn); | |
83 | static unsigned int vni_svi_hash_key_make(const void *p); | |
84 | static bool vni_svi_hash_cmp(const void *p1, const void *p2); | |
85 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
86 | struct ipaddr *addr, | |
87 | bool resolve); | |
88 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
89 | void *args); | |
90 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
91 | void *args); | |
9c7edc03 | 92 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 93 | |
94 | /* | |
95 | * Private functions. | |
96 | */ | |
97 | ||
98 | /* | |
99 | * Make vni hash key. | |
100 | */ | |
d8b87afe | 101 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 102 | { |
d8b87afe | 103 | const struct bgpevpn *vpn = p; |
d62a17ae | 104 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 105 | } |
106 | ||
107 | /* | |
108 | * Comparison function for vni hash | |
109 | */ | |
74df8d6d | 110 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 111 | { |
d62a17ae | 112 | const struct bgpevpn *vpn1 = p1; |
113 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 114 | |
ce40c627 | 115 | return vpn1->vni == vpn2->vni; |
14c1a7bf | 116 | } |
117 | ||
c44ab6f1 | 118 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
119 | { |
120 | const struct bgpevpn *vpn1 = p1; | |
121 | const struct bgpevpn *vpn2 = p2; | |
122 | ||
123 | return vpn1->vni - vpn2->vni; | |
124 | } | |
125 | ||
10ebe1ab MK |
126 | /* |
127 | * Make vrf import route target hash key. | |
128 | */ | |
d8b87afe | 129 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 130 | { |
d8b87afe QY |
131 | const struct vrf_irt_node *irt = p; |
132 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
133 | |
134 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
135 | } |
136 | ||
137 | /* | |
138 | * Comparison function for vrf import rt hash | |
139 | */ | |
74df8d6d | 140 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
141 | { |
142 | const struct vrf_irt_node *irt1 = p1; | |
143 | const struct vrf_irt_node *irt2 = p2; | |
144 | ||
10ebe1ab MK |
145 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
146 | } | |
147 | ||
148 | /* | |
f9b8094e | 149 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
150 | */ |
151 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
152 | { | |
5e53dce3 | 153 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
154 | struct vrf_irt_node *irt; |
155 | ||
5e53dce3 T |
156 | bgp_evpn = bgp_get_evpn(); |
157 | if (!bgp_evpn) { | |
e50f7cfd | 158 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 159 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
160 | return NULL; |
161 | } | |
162 | ||
163 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
164 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
165 | |
166 | irt->rt = *rt; | |
167 | irt->vrfs = list_new(); | |
168 | ||
169 | /* Add to hash */ | |
ac390ef8 | 170 | (void)hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern); |
10ebe1ab MK |
171 | |
172 | return irt; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Free the vrf import rt node | |
177 | */ | |
178 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
179 | { | |
5e53dce3 | 180 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 181 | |
5e53dce3 T |
182 | bgp_evpn = bgp_get_evpn(); |
183 | if (!bgp_evpn) { | |
e50f7cfd | 184 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 185 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
186 | return; |
187 | } | |
188 | ||
5e53dce3 | 189 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 190 | list_delete(&irt->vrfs); |
10ebe1ab MK |
191 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
192 | } | |
193 | ||
3727e359 DA |
194 | static void hash_vrf_import_rt_free(struct vrf_irt_node *irt) |
195 | { | |
196 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
197 | } | |
198 | ||
10ebe1ab MK |
199 | /* |
200 | * Function to lookup Import RT node - used to map a RT to set of | |
201 | * VNIs importing routes with that RT. | |
202 | */ | |
203 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
204 | { | |
5e53dce3 | 205 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
206 | struct vrf_irt_node *irt; |
207 | struct vrf_irt_node tmp; | |
208 | ||
5e53dce3 T |
209 | bgp_evpn = bgp_get_evpn(); |
210 | if (!bgp_evpn) { | |
f9b8094e T |
211 | flog_err( |
212 | EC_BGP_NO_DFLT, | |
213 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
214 | return NULL; |
215 | } | |
216 | ||
6006b807 | 217 | memset(&tmp, 0, sizeof(tmp)); |
10ebe1ab | 218 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
5e53dce3 | 219 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
220 | return irt; |
221 | } | |
222 | ||
223 | /* | |
224 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
225 | */ | |
996c9314 | 226 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
227 | { |
228 | struct listnode *node = NULL, *nnode = NULL; | |
229 | struct bgp *tmp_bgp_vrf = NULL; | |
230 | ||
231 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
232 | if (tmp_bgp_vrf == bgp_vrf) | |
233 | return 1; | |
234 | } | |
235 | return 0; | |
236 | } | |
237 | ||
14c1a7bf | 238 | /* |
239 | * Make import route target hash key. | |
240 | */ | |
d8b87afe | 241 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 242 | { |
d8b87afe QY |
243 | const struct irt_node *irt = p; |
244 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
245 | |
246 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 247 | } |
248 | ||
249 | /* | |
250 | * Comparison function for import rt hash | |
251 | */ | |
74df8d6d | 252 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 253 | { |
d62a17ae | 254 | const struct irt_node *irt1 = p1; |
255 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 256 | |
d62a17ae | 257 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 258 | } |
259 | ||
7724c0a1 | 260 | /* |
128ea8ab | 261 | * Create a new import_rt |
262 | */ | |
d62a17ae | 263 | static struct irt_node *import_rt_new(struct bgp *bgp, |
264 | struct ecommunity_val *rt) | |
128ea8ab | 265 | { |
d62a17ae | 266 | struct irt_node *irt; |
128ea8ab | 267 | |
d62a17ae | 268 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 269 | |
d62a17ae | 270 | irt->rt = *rt; |
271 | irt->vnis = list_new(); | |
128ea8ab | 272 | |
d62a17ae | 273 | /* Add to hash */ |
ac390ef8 | 274 | (void)hash_get(bgp->import_rt_hash, irt, hash_alloc_intern); |
128ea8ab | 275 | |
d62a17ae | 276 | return irt; |
128ea8ab | 277 | } |
278 | ||
279 | /* | |
280 | * Free the import rt node | |
7724c0a1 | 281 | */ |
d62a17ae | 282 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 283 | { |
d62a17ae | 284 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 285 | list_delete(&irt->vnis); |
d62a17ae | 286 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 287 | } |
288 | ||
3727e359 DA |
289 | static void hash_import_rt_free(struct irt_node *irt) |
290 | { | |
291 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
292 | } | |
293 | ||
14c1a7bf | 294 | /* |
128ea8ab | 295 | * Function to lookup Import RT node - used to map a RT to set of |
296 | * VNIs importing routes with that RT. | |
297 | */ | |
d62a17ae | 298 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
299 | struct ecommunity_val *rt) | |
128ea8ab | 300 | { |
d62a17ae | 301 | struct irt_node *irt; |
302 | struct irt_node tmp; | |
128ea8ab | 303 | |
6006b807 | 304 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 305 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
306 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
307 | return irt; | |
128ea8ab | 308 | } |
309 | ||
310 | /* | |
311 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
312 | */ | |
d62a17ae | 313 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 314 | { |
d62a17ae | 315 | struct listnode *node, *nnode; |
316 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 317 | |
d62a17ae | 318 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
319 | if (tmp_vpn == vpn) | |
320 | return 1; | |
321 | } | |
128ea8ab | 322 | |
d62a17ae | 323 | return 0; |
128ea8ab | 324 | } |
325 | ||
326 | /* | |
327 | * Compare Route Targets. | |
328 | */ | |
f4a5218d AK |
329 | int bgp_evpn_route_target_cmp(struct ecommunity *ecom1, |
330 | struct ecommunity *ecom2) | |
128ea8ab | 331 | { |
d62a17ae | 332 | if (ecom1 && !ecom2) |
333 | return -1; | |
128ea8ab | 334 | |
d62a17ae | 335 | if (!ecom1 && ecom2) |
336 | return 1; | |
128ea8ab | 337 | |
d62a17ae | 338 | if (!ecom1 && !ecom2) |
339 | return 0; | |
128ea8ab | 340 | |
d62a17ae | 341 | if (ecom1->str && !ecom2->str) |
342 | return -1; | |
128ea8ab | 343 | |
d62a17ae | 344 | if (!ecom1->str && ecom2->str) |
345 | return 1; | |
128ea8ab | 346 | |
d62a17ae | 347 | if (!ecom1->str && !ecom2->str) |
348 | return 0; | |
128ea8ab | 349 | |
d62a17ae | 350 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 351 | } |
352 | ||
ca337b46 SW |
353 | /* |
354 | * Compare L3 Route Targets. | |
355 | */ | |
356 | static int evpn_vrf_route_target_cmp(struct vrf_route_target *rt1, | |
357 | struct vrf_route_target *rt2) | |
358 | { | |
359 | return bgp_evpn_route_target_cmp(rt1->ecom, rt2->ecom); | |
360 | } | |
361 | ||
f4a5218d | 362 | void bgp_evpn_xxport_delete_ecomm(void *val) |
987d8198 DS |
363 | { |
364 | struct ecommunity *ecomm = val; | |
365 | ecommunity_free(&ecomm); | |
366 | } | |
367 | ||
ca337b46 SW |
368 | /* |
369 | * Delete l3 Route Target. | |
370 | */ | |
371 | static void evpn_vrf_rt_del(void *val) | |
372 | { | |
373 | struct vrf_route_target *l3rt = val; | |
374 | ||
375 | ecommunity_free(&l3rt->ecom); | |
376 | ||
377 | XFREE(MTYPE_VRF_ROUTE_TARGET, l3rt); | |
378 | } | |
379 | ||
380 | /* | |
381 | * Allocate a new l3 Route Target. | |
382 | */ | |
383 | static struct vrf_route_target *evpn_vrf_rt_new(struct ecommunity *ecom) | |
384 | { | |
385 | struct vrf_route_target *l3rt; | |
386 | ||
387 | l3rt = XCALLOC(MTYPE_VRF_ROUTE_TARGET, sizeof(struct vrf_route_target)); | |
388 | ||
389 | l3rt->ecom = ecom; | |
390 | ||
391 | return l3rt; | |
392 | } | |
393 | ||
128ea8ab | 394 | /* |
395 | * Mask off global-admin field of specified extended community (RT), | |
396 | * just retain the local-admin field. | |
397 | */ | |
d62a17ae | 398 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
58d8948c | 399 | const struct ecommunity_val *src) |
128ea8ab | 400 | { |
d7c0a89a | 401 | uint8_t type; |
128ea8ab | 402 | |
d62a17ae | 403 | type = src->val[0]; |
404 | dst->val[0] = 0; | |
405 | if (type == ECOMMUNITY_ENCODE_AS) { | |
406 | dst->val[2] = dst->val[3] = 0; | |
407 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
408 | || type == ECOMMUNITY_ENCODE_IP) { | |
409 | dst->val[2] = dst->val[3] = 0; | |
410 | dst->val[4] = dst->val[5] = 0; | |
411 | } | |
128ea8ab | 412 | } |
413 | ||
10ebe1ab | 414 | /* |
58d8948c SW |
415 | * Converts the RT to Ecommunity Value and adjusts masking based |
416 | * on flags set for RT. | |
10ebe1ab | 417 | */ |
58d8948c SW |
418 | static void vrf_rt2ecom_val(struct ecommunity_val *to_eval, |
419 | const struct vrf_route_target *l3rt, int iter) | |
10ebe1ab | 420 | { |
58d8948c | 421 | const struct ecommunity_val *eval; |
10ebe1ab | 422 | |
58d8948c SW |
423 | eval = (const struct ecommunity_val *)(l3rt->ecom->val + |
424 | (iter * ECOMMUNITY_SIZE)); | |
425 | /* If using "automatic" or "wildcard *" RT, | |
10ebe1ab MK |
426 | * we only care about the local-admin sub-field. |
427 | * This is to facilitate using L3VNI(VRF-VNI) | |
58d8948c SW |
428 | * as the RT for EBGP peering too and simplify |
429 | * configurations by allowing any ASN via '*'. | |
10ebe1ab | 430 | */ |
58d8948c | 431 | memcpy(to_eval, eval, ECOMMUNITY_SIZE); |
10ebe1ab | 432 | |
58d8948c SW |
433 | if (CHECK_FLAG(l3rt->flags, BGP_VRF_RT_AUTO) || |
434 | CHECK_FLAG(l3rt->flags, BGP_VRF_RT_WILD)) | |
435 | mask_ecom_global_admin(to_eval, eval); | |
436 | } | |
10ebe1ab | 437 | |
58d8948c SW |
438 | /* |
439 | * Map one RT to specified VRF. | |
440 | * bgp_vrf = BGP vrf instance | |
441 | */ | |
442 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct vrf_route_target *l3rt) | |
443 | { | |
444 | uint32_t i = 0; | |
445 | ||
446 | for (i = 0; i < l3rt->ecom->size; i++) { | |
447 | struct vrf_irt_node *irt = NULL; | |
448 | struct ecommunity_val eval_tmp; | |
449 | ||
450 | /* Adjust masking for value */ | |
451 | vrf_rt2ecom_val(&eval_tmp, l3rt, i); | |
10ebe1ab | 452 | |
58d8948c | 453 | irt = lookup_vrf_import_rt(&eval_tmp); |
10ebe1ab | 454 | |
58d8948c SW |
455 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
456 | return; /* Already mapped. */ | |
457 | ||
458 | if (!irt) | |
459 | irt = vrf_import_rt_new(&eval_tmp); | |
460 | ||
461 | /* Add VRF to the list for this RT. */ | |
462 | listnode_add(irt->vrfs, bgp_vrf); | |
463 | } | |
10ebe1ab MK |
464 | } |
465 | ||
466 | /* | |
467 | * Unmap specified VRF from specified RT. If there are no other | |
468 | * VRFs for this RT, then the RT hash is deleted. | |
469 | * bgp_vrf: BGP VRF specific instance | |
470 | */ | |
58d8948c SW |
471 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, |
472 | struct vrf_route_target *l3rt) | |
10ebe1ab | 473 | { |
58d8948c SW |
474 | uint32_t i; |
475 | ||
476 | for (i = 0; i < l3rt->ecom->size; i++) { | |
477 | struct vrf_irt_node *irt; | |
478 | struct ecommunity_val eval_tmp; | |
479 | ||
480 | /* Adjust masking for value */ | |
481 | vrf_rt2ecom_val(&eval_tmp, l3rt, i); | |
482 | ||
483 | irt = lookup_vrf_import_rt(&eval_tmp); | |
484 | ||
485 | if (!irt) | |
486 | return; /* Not mapped */ | |
487 | ||
488 | /* Delete VRF from list for this RT. */ | |
489 | listnode_delete(irt->vrfs, bgp_vrf); | |
490 | ||
491 | if (!listnode_head(irt->vrfs)) | |
492 | vrf_import_rt_free(irt); | |
10ebe1ab MK |
493 | } |
494 | } | |
495 | ||
128ea8ab | 496 | /* |
497 | * Map one RT to specified VNI. | |
14c1a7bf | 498 | */ |
d62a17ae | 499 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
500 | struct ecommunity_val *eval) | |
128ea8ab | 501 | { |
d62a17ae | 502 | struct irt_node *irt; |
503 | struct ecommunity_val eval_tmp; | |
128ea8ab | 504 | |
d62a17ae | 505 | /* If using "automatic" RT, we only care about the local-admin |
506 | * sub-field. | |
507 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
508 | */ | |
509 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
510 | if (!is_import_rt_configured(vpn)) | |
511 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 512 | |
d62a17ae | 513 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 514 | if (irt) |
d62a17ae | 515 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
516 | /* Already mapped. */ | |
517 | return; | |
128ea8ab | 518 | |
879e43a5 | 519 | if (!irt) |
d62a17ae | 520 | irt = import_rt_new(bgp, &eval_tmp); |
128ea8ab | 521 | |
d62a17ae | 522 | /* Add VNI to the hash list for this RT. */ |
523 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 524 | } |
525 | ||
526 | /* | |
527 | * Unmap specified VNI from specified RT. If there are no other | |
528 | * VNIs for this RT, then the RT hash is deleted. | |
529 | */ | |
d62a17ae | 530 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
531 | struct irt_node *irt) | |
14c1a7bf | 532 | { |
d62a17ae | 533 | /* Delete VNI from hash list for this RT. */ |
534 | listnode_delete(irt->vnis, vpn); | |
535 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 536 | import_rt_free(bgp, irt); |
537 | } | |
14c1a7bf | 538 | } |
539 | ||
0ca10580 | 540 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 541 | const struct prefix_evpn *p, |
0ca10580 CS |
542 | struct attr *attr, uint8_t flags) |
543 | { | |
544 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
545 | ||
546 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
547 | if (!bgp_vrf) | |
548 | return; | |
549 | ||
b96cafa3 CS |
550 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
551 | return; | |
552 | ||
553 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
554 | * in case of route is self MAC-IP, | |
555 | * advertise-pip and advertise-svi-ip features | |
556 | * are enabled. | |
557 | * Otherwise, for all host MAC-IP route's | |
27727001 | 558 | * copy anycast RMAC. |
b96cafa3 CS |
559 | */ |
560 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
561 | && bgp_vrf->evpn_info->advertise_pip && | |
562 | bgp_vrf->evpn_info->is_anycast_mac) { | |
563 | /* copy sys rmac */ | |
564 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
565 | ETH_ALEN); | |
566 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
567 | attr->mp_nexthop_global_in = | |
568 | bgp_vrf->evpn_info->pip_ip; | |
569 | } else | |
570 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 571 | } |
b96cafa3 | 572 | |
128ea8ab | 573 | /* |
574 | * Create RT extended community automatically from passed information: | |
575 | * of the form AS:VNI. | |
576 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
577 | * the need is to get a RT value that will be unique across different | |
578 | * VNIs but the same across routers (in the same AS) for a particular | |
579 | * VNI. | |
580 | */ | |
58d8948c SW |
581 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl, |
582 | bool is_l3) | |
128ea8ab | 583 | { |
d62a17ae | 584 | struct ecommunity_val eval; |
ca337b46 | 585 | struct ecommunity *ecomadd; |
58d8948c | 586 | struct ecommunity *ecom; |
ca337b46 SW |
587 | struct vrf_route_target *l3rt; |
588 | struct vrf_route_target *newrt; | |
b90d4580 CS |
589 | bool ecom_found = false; |
590 | struct listnode *node; | |
128ea8ab | 591 | |
bf1061d8 VB |
592 | if (bgp->advertise_autort_rfc8365) |
593 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 594 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 595 | |
d62a17ae | 596 | ecomadd = ecommunity_new(); |
1207a5bc | 597 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 | 598 | |
58d8948c SW |
599 | if (is_l3) { |
600 | for (ALL_LIST_ELEMENTS_RO(rtl, node, l3rt)) | |
601 | if (ecommunity_cmp(ecomadd, l3rt->ecom)) { | |
602 | ecom_found = true; | |
603 | break; | |
604 | } | |
605 | } else { | |
606 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) | |
607 | if (ecommunity_cmp(ecomadd, ecom)) { | |
608 | ecom_found = true; | |
609 | break; | |
610 | } | |
611 | } | |
b90d4580 | 612 | |
ca337b46 | 613 | if (!ecom_found) { |
58d8948c SW |
614 | if (is_l3) { |
615 | newrt = evpn_vrf_rt_new(ecomadd); | |
616 | /* Label it as autoderived */ | |
617 | SET_FLAG(newrt->flags, BGP_VRF_RT_AUTO); | |
618 | listnode_add_sort(rtl, newrt); | |
619 | } else | |
620 | listnode_add_sort(rtl, ecomadd); | |
ca337b46 | 621 | } else |
84f22ecc | 622 | ecommunity_free(&ecomadd); |
128ea8ab | 623 | } |
14c1a7bf | 624 | |
625 | /* | |
128ea8ab | 626 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
627 | * creation of a VNI. | |
628 | */ | |
d62a17ae | 629 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 630 | { |
d62a17ae | 631 | bgp_evpn_derive_auto_rd(bgp, vpn); |
632 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
633 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 634 | } |
635 | ||
1ec31309 | 636 | /* |
637 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
638 | */ | |
639 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
640 | { | |
641 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
642 | return; | |
643 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
644 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
645 | } | |
646 | ||
34c7f35f SW |
647 | /* |
648 | * Wrapper for node get in global table. | |
649 | */ | |
650 | struct bgp_dest *bgp_evpn_global_node_get(struct bgp_table *table, afi_t afi, | |
09319b4e DS |
651 | safi_t safi, |
652 | const struct prefix_evpn *evp, | |
34c7f35f SW |
653 | struct prefix_rd *prd, |
654 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
655 | { |
656 | struct prefix_evpn global_p; | |
657 | ||
658 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
659 | /* prefix in the global table doesn't include the VTEP-IP so | |
660 | * we need to create a different copy of the prefix | |
661 | */ | |
662 | evpn_type1_prefix_global_copy(&global_p, evp); | |
663 | evp = &global_p; | |
34c7f35f SW |
664 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
665 | local_pi) { | |
666 | /* | |
852d9f97 SW |
667 | * prefix in the global table needs MAC/IP, ensure they are |
668 | * present, using one's from local table's path_info. | |
34c7f35f | 669 | */ |
852d9f97 SW |
670 | if (is_evpn_prefix_ipaddr_none(evp)) { |
671 | /* VNI MAC -> Global */ | |
672 | evpn_type2_prefix_global_copy( | |
673 | &global_p, evp, NULL /* mac */, | |
674 | evpn_type2_path_info_get_ip(local_pi)); | |
675 | } else { | |
676 | /* VNI IP -> Global */ | |
677 | evpn_type2_prefix_global_copy( | |
678 | &global_p, evp, | |
679 | evpn_type2_path_info_get_mac(local_pi), | |
680 | NULL /* ip */); | |
681 | } | |
682 | ||
c44ab6f1 AK |
683 | evp = &global_p; |
684 | } | |
685 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
686 | } | |
687 | ||
34c7f35f SW |
688 | /* |
689 | * Wrapper for node lookup in global table. | |
690 | */ | |
691 | struct bgp_dest * | |
692 | bgp_evpn_global_node_lookup(struct bgp_table *table, afi_t afi, safi_t safi, | |
693 | const struct prefix_evpn *evp, | |
694 | struct prefix_rd *prd, | |
695 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
696 | { |
697 | struct prefix_evpn global_p; | |
698 | ||
699 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
700 | /* prefix in the global table doesn't include the VTEP-IP so | |
701 | * we need to create a different copy of the prefix | |
702 | */ | |
703 | evpn_type1_prefix_global_copy(&global_p, evp); | |
704 | evp = &global_p; | |
34c7f35f SW |
705 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
706 | local_pi) { | |
707 | /* | |
852d9f97 SW |
708 | * prefix in the global table needs MAC/IP, ensure they are |
709 | * present, using one's from local table's path_info. | |
34c7f35f | 710 | */ |
852d9f97 SW |
711 | if (is_evpn_prefix_ipaddr_none(evp)) { |
712 | /* VNI MAC -> Global */ | |
713 | evpn_type2_prefix_global_copy( | |
714 | &global_p, evp, NULL /* mac */, | |
715 | evpn_type2_path_info_get_ip(local_pi)); | |
716 | } else { | |
717 | /* VNI IP -> Global */ | |
718 | evpn_type2_prefix_global_copy( | |
719 | &global_p, evp, | |
720 | evpn_type2_path_info_get_mac(local_pi), | |
721 | NULL /* ip */); | |
722 | } | |
723 | ||
c44ab6f1 AK |
724 | evp = &global_p; |
725 | } | |
726 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
727 | } | |
728 | ||
34c7f35f | 729 | /* |
852d9f97 | 730 | * Wrapper for node get in VNI IP table. |
34c7f35f | 731 | */ |
852d9f97 SW |
732 | struct bgp_dest *bgp_evpn_vni_ip_node_get(struct bgp_table *const table, |
733 | const struct prefix_evpn *evp, | |
734 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
735 | { |
736 | struct prefix_evpn vni_p; | |
737 | ||
738 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
739 | /* prefix in the global table doesn't include the VTEP-IP so | |
740 | * we need to create a different copy for the VNI | |
741 | */ | |
852d9f97 SW |
742 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
743 | parent_pi->attr->nexthop); | |
34c7f35f | 744 | evp = &vni_p; |
852d9f97 SW |
745 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
746 | /* Only MAC-IP should go into this table, not mac-only */ | |
747 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
748 | ||
34c7f35f | 749 | /* |
852d9f97 | 750 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 751 | * we need to create a different copy of the prefix. |
34c7f35f | 752 | */ |
852d9f97 | 753 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
754 | evp = &vni_p; |
755 | } | |
756 | return bgp_node_get(table, (struct prefix *)evp); | |
757 | } | |
758 | ||
759 | /* | |
852d9f97 | 760 | * Wrapper for node lookup in VNI IP table. |
34c7f35f | 761 | */ |
852d9f97 SW |
762 | struct bgp_dest * |
763 | bgp_evpn_vni_ip_node_lookup(const struct bgp_table *const table, | |
764 | const struct prefix_evpn *evp, | |
765 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
766 | { |
767 | struct prefix_evpn vni_p; | |
768 | ||
769 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
770 | /* prefix in the global table doesn't include the VTEP-IP so | |
771 | * we need to create a different copy for the VNI | |
772 | */ | |
852d9f97 SW |
773 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
774 | parent_pi->attr->nexthop); | |
34c7f35f | 775 | evp = &vni_p; |
852d9f97 SW |
776 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
777 | /* Only MAC-IP should go into this table, not mac-only */ | |
778 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
779 | ||
34c7f35f | 780 | /* |
852d9f97 | 781 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 782 | * we need to create a different copy of the prefix. |
34c7f35f | 783 | */ |
852d9f97 | 784 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
785 | evp = &vni_p; |
786 | } | |
787 | return bgp_node_lookup(table, (struct prefix *)evp); | |
788 | } | |
789 | ||
852d9f97 SW |
790 | /* |
791 | * Wrapper for node get in VNI MAC table. | |
792 | */ | |
793 | struct bgp_dest * | |
794 | bgp_evpn_vni_mac_node_get(struct bgp_table *const table, | |
795 | const struct prefix_evpn *evp, | |
796 | const struct bgp_path_info *parent_pi) | |
797 | { | |
798 | struct prefix_evpn vni_p; | |
799 | ||
800 | /* Only type-2 should ever go into this table */ | |
801 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
802 | ||
803 | /* | |
804 | * prefix in the vni MAC table doesn't include IP so | |
805 | * we need to create a different copy of the prefix. | |
806 | */ | |
807 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
808 | evp = &vni_p; | |
809 | return bgp_node_get(table, (struct prefix *)evp); | |
810 | } | |
811 | ||
812 | /* | |
813 | * Wrapper for node lookup in VNI MAC table. | |
814 | */ | |
815 | struct bgp_dest * | |
816 | bgp_evpn_vni_mac_node_lookup(const struct bgp_table *const table, | |
817 | const struct prefix_evpn *evp, | |
818 | const struct bgp_path_info *parent_pi) | |
819 | { | |
820 | struct prefix_evpn vni_p; | |
821 | ||
822 | /* Only type-2 should ever go into this table */ | |
823 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
824 | ||
825 | /* | |
826 | * prefix in the vni MAC table doesn't include IP so | |
827 | * we need to create a different copy of the prefix. | |
828 | */ | |
829 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
830 | evp = &vni_p; | |
831 | return bgp_node_lookup(table, (struct prefix *)evp); | |
832 | } | |
833 | ||
834 | /* | |
835 | * Wrapper for node get in both VNI tables. | |
836 | */ | |
837 | struct bgp_dest *bgp_evpn_vni_node_get(struct bgpevpn *vpn, | |
838 | const struct prefix_evpn *p, | |
839 | const struct bgp_path_info *parent_pi) | |
840 | { | |
841 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
842 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
843 | return bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
844 | ||
845 | return bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
846 | } | |
847 | ||
848 | /* | |
849 | * Wrapper for node lookup in both VNI tables. | |
850 | */ | |
851 | struct bgp_dest *bgp_evpn_vni_node_lookup(const struct bgpevpn *vpn, | |
852 | const struct prefix_evpn *p, | |
853 | const struct bgp_path_info *parent_pi) | |
854 | { | |
855 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
856 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
857 | return bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, | |
858 | parent_pi); | |
859 | ||
860 | return bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
861 | } | |
862 | ||
128ea8ab | 863 | /* |
864 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 865 | */ |
d62a17ae | 866 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 867 | const struct prefix_evpn *p, |
34c7f35f | 868 | const struct ethaddr *mac, |
d62a17ae | 869 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 870 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 871 | { |
872 | struct stream *s; | |
0ffd0fb5 | 873 | uint16_t ipa_len; |
c44ab6f1 | 874 | static struct in_addr zero_remote_vtep_ip; |
90f30caa | 875 | bool esi_valid; |
d62a17ae | 876 | |
877 | /* Check socket. */ | |
878 | if (!zclient || zclient->sock < 0) | |
879 | return 0; | |
880 | ||
881 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
882 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
883 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
884 | zlog_debug( |
885 | "%s: No zebra instance to talk to, not installing remote macip", | |
886 | __func__); | |
d62a17ae | 887 | return 0; |
bb4ef1ae | 888 | } |
c44ab6f1 AK |
889 | |
890 | if (!esi) | |
891 | esi = zero_esi; | |
d62a17ae | 892 | s = zclient->obuf; |
893 | stream_reset(s); | |
894 | ||
996c9314 LB |
895 | zclient_create_header( |
896 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
897 | bgp->vrf_id); | |
d62a17ae | 898 | stream_putl(s, vpn->vni); |
34c7f35f SW |
899 | |
900 | if (mac) /* Mac Addr */ | |
901 | stream_put(s, &mac->octet, ETH_ALEN); | |
902 | else | |
903 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); | |
904 | ||
d62a17ae | 905 | /* IP address length and IP address, if any. */ |
3714a385 | 906 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 907 | stream_putw(s, 0); |
d62a17ae | 908 | else { |
3714a385 | 909 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 910 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 911 | stream_putw(s, ipa_len); |
3714a385 | 912 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 913 | } |
9c7edc03 AK |
914 | /* If the ESI is valid that becomes the nexthop; tape out the |
915 | * VTEP-IP for that case | |
c44ab6f1 | 916 | */ |
90f30caa AK |
917 | if (bgp_evpn_is_esi_valid(esi)) { |
918 | esi_valid = true; | |
c44ab6f1 | 919 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
90f30caa AK |
920 | } else { |
921 | esi_valid = false; | |
9c7edc03 | 922 | stream_put_in_addr(s, &remote_vtep_ip); |
90f30caa | 923 | } |
d62a17ae | 924 | |
ead40654 | 925 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 926 | /* Also TX the sequence number of the best route. */ |
927 | if (add) { | |
ead40654 | 928 | stream_putc(s, flags); |
f07e1c99 | 929 | stream_putl(s, seq); |
c44ab6f1 | 930 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 931 | } |
d62a17ae | 932 | |
933 | stream_putw_at(s, 0, stream_get_endp(s)); | |
934 | ||
90f30caa AK |
935 | if (bgp_debug_zebra(NULL)) { |
936 | char esi_buf[ESI_STR_LEN]; | |
937 | ||
938 | if (esi_valid) | |
939 | esi_to_str(esi, esi_buf, sizeof(esi_buf)); | |
940 | else | |
941 | snprintf(esi_buf, sizeof(esi_buf), "-"); | |
996c9314 | 942 | zlog_debug( |
90f30caa | 943 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4 esi %s", |
996c9314 | 944 | add ? "ADD" : "DEL", vpn->vni, |
852d9f97 SW |
945 | (mac ? mac : &p->prefix.macip_addr.mac), |
946 | &p->prefix.macip_addr.ip, flags, seq, &remote_vtep_ip, | |
947 | esi_buf); | |
90f30caa | 948 | } |
d62a17ae | 949 | |
23aa35ad AK |
950 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
951 | esi); | |
952 | ||
d62a17ae | 953 | return zclient_send_message(zclient); |
7ef5a232 | 954 | } |
b18825eb | 955 | |
128ea8ab | 956 | /* |
957 | * Add (update) or delete remote VTEP from zebra. | |
958 | */ | |
d62a17ae | 959 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
960 | const struct prefix_evpn *p, |
961 | int flood_control, int add) | |
128ea8ab | 962 | { |
d62a17ae | 963 | struct stream *s; |
128ea8ab | 964 | |
d62a17ae | 965 | /* Check socket. */ |
966 | if (!zclient || zclient->sock < 0) | |
967 | return 0; | |
128ea8ab | 968 | |
d62a17ae | 969 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
970 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
971 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
972 | zlog_debug( |
973 | "%s: No zebra instance to talk to, not installing remote vtep", | |
974 | __func__); | |
d62a17ae | 975 | return 0; |
bb4ef1ae | 976 | } |
128ea8ab | 977 | |
d62a17ae | 978 | s = zclient->obuf; |
979 | stream_reset(s); | |
128ea8ab | 980 | |
996c9314 LB |
981 | zclient_create_header( |
982 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
983 | bgp->vrf_id); | |
d62a17ae | 984 | stream_putl(s, vpn->vni); |
3714a385 | 985 | if (is_evpn_prefix_ipaddr_v4(p)) |
986 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
987 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 988 | flog_err( |
e50f7cfd | 989 | EC_BGP_VTEP_INVALID, |
d62a17ae | 990 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
991 | add ? "ADD" : "DEL", vpn->vni); | |
992 | return -1; | |
993 | } | |
b16dd019 | 994 | stream_putl(s, flood_control); |
128ea8ab | 995 | |
d62a17ae | 996 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 997 | |
d62a17ae | 998 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 999 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 1000 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 1001 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 1002 | |
23aa35ad AK |
1003 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
1004 | ||
d62a17ae | 1005 | return zclient_send_message(zclient); |
128ea8ab | 1006 | } |
1007 | ||
342dd0c6 | 1008 | /* |
1009 | * Build extended communities for EVPN prefix route. | |
1010 | */ | |
1011 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
1012 | struct attr *attr) | |
1013 | { | |
1014 | struct ecommunity ecom_encap; | |
342dd0c6 | 1015 | struct ecommunity_val eval; |
1016 | struct ecommunity_val eval_rmac; | |
1017 | bgp_encap_types tnl_type; | |
1018 | struct listnode *node, *nnode; | |
ca337b46 | 1019 | struct vrf_route_target *l3rt; |
fab92da7 | 1020 | struct ecommunity *old_ecom; |
ca337b46 | 1021 | struct ecommunity *ecom; |
342dd0c6 | 1022 | struct list *vrf_export_rtl = NULL; |
1023 | ||
1024 | /* Encap */ | |
1025 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1026 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1027 | encode_encap_extcomm(tnl_type, &eval); | |
1028 | ecom_encap.size = 1; | |
34540b0d | 1029 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1030 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 1031 | |
1032 | /* Add Encap */ | |
b53e67a3 DA |
1033 | if (bgp_attr_get_ecommunity(attr)) { |
1034 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 1035 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
1036 | if (!old_ecom->refcnt) | |
1037 | ecommunity_free(&old_ecom); | |
1038 | } else | |
1039 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 1040 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 1041 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 1042 | |
1043 | /* Add the export RTs for L3VNI/VRF */ | |
1044 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
ca337b46 | 1045 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, l3rt)) |
b53e67a3 | 1046 | bgp_attr_set_ecommunity( |
ca337b46 SW |
1047 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), |
1048 | l3rt->ecom)); | |
342dd0c6 | 1049 | |
1050 | /* add the router mac extended community */ | |
1051 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 1052 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1053 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1054 | true, true); | |
342dd0c6 | 1055 | } |
342dd0c6 | 1056 | } |
1057 | ||
128ea8ab | 1058 | /* |
1ec31309 | 1059 | * Build extended communities for EVPN route. |
1060 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
1061 | * and ENCAP extended communities are applicable for all routes. | |
1062 | * The default gateway extended community and MAC mobility (sticky) extended | |
1063 | * community are added as needed based on passed settings - only for type-2 | |
1064 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
1065 | * added, if present, based on passed settings - only for non-link-local | |
1066 | * type-2 routes. | |
128ea8ab | 1067 | */ |
7ec156a9 | 1068 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 1069 | int add_l3_ecomm) |
128ea8ab | 1070 | { |
d62a17ae | 1071 | struct ecommunity ecom_encap; |
1072 | struct ecommunity ecom_sticky; | |
ead40654 | 1073 | struct ecommunity ecom_default_gw; |
68e33151 | 1074 | struct ecommunity ecom_na; |
d62a17ae | 1075 | struct ecommunity_val eval; |
1076 | struct ecommunity_val eval_sticky; | |
ead40654 | 1077 | struct ecommunity_val eval_default_gw; |
bc59a672 | 1078 | struct ecommunity_val eval_rmac; |
68e33151 | 1079 | struct ecommunity_val eval_na; |
9c7edc03 | 1080 | bool proxy; |
68e33151 | 1081 | |
d62a17ae | 1082 | bgp_encap_types tnl_type; |
1083 | struct listnode *node, *nnode; | |
1084 | struct ecommunity *ecom; | |
ca337b46 | 1085 | struct vrf_route_target *l3rt; |
d7c0a89a | 1086 | uint32_t seqnum; |
7a3e76f1 | 1087 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 1088 | |
d62a17ae | 1089 | /* Encap */ |
1090 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1091 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1092 | encode_encap_extcomm(tnl_type, &eval); | |
1093 | ecom_encap.size = 1; | |
34540b0d | 1094 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1095 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 1096 | |
d62a17ae | 1097 | /* Add Encap */ |
b53e67a3 | 1098 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 1099 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 1100 | |
7a3e76f1 | 1101 | /* Add the export RTs for L2VNI */ |
d62a17ae | 1102 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
1103 | bgp_attr_set_ecommunity( |
1104 | attr, | |
1105 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 1106 | |
1ec31309 | 1107 | /* Add the export RTs for L3VNI if told to - caller determines |
1108 | * when this should be done. | |
523cafc4 | 1109 | */ |
1ec31309 | 1110 | if (add_l3_ecomm) { |
7ec156a9 MK |
1111 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
1112 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
1113 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
ca337b46 | 1114 | l3rt)) |
b53e67a3 DA |
1115 | bgp_attr_set_ecommunity( |
1116 | attr, | |
1117 | ecommunity_merge( | |
1118 | bgp_attr_get_ecommunity(attr), | |
ca337b46 | 1119 | l3rt->ecom)); |
7ec156a9 | 1120 | } |
f1f8b53c | 1121 | } |
7a3e76f1 | 1122 | |
1ec31309 | 1123 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 1124 | if (attr->sticky) { |
1125 | seqnum = 0; | |
1126 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
1127 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
1128 | ecom_sticky.size = 1; | |
34540b0d | 1129 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1130 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
1131 | bgp_attr_set_ecommunity( |
1132 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1133 | &ecom_sticky)); | |
d62a17ae | 1134 | } |
c85c03c7 | 1135 | |
1ec31309 | 1136 | /* Add RMAC, if told to. */ |
1137 | if (add_l3_ecomm) { | |
bc59a672 | 1138 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1139 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1140 | true, true); | |
bc59a672 MK |
1141 | } |
1142 | ||
1ec31309 | 1143 | /* Add default gateway, if needed. */ |
ead40654 MK |
1144 | if (attr->default_gw) { |
1145 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
1146 | encode_default_gw_extcomm(&eval_default_gw); | |
1147 | ecom_default_gw.size = 1; | |
34540b0d | 1148 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 1149 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
1150 | bgp_attr_set_ecommunity( |
1151 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1152 | &ecom_default_gw)); | |
ead40654 MK |
1153 | } |
1154 | ||
9c7edc03 AK |
1155 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
1156 | if (attr->router_flag || proxy) { | |
68e33151 | 1157 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 1158 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 1159 | ecom_na.size = 1; |
34540b0d | 1160 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 1161 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
1162 | bgp_attr_set_ecommunity( |
1163 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1164 | &ecom_na)); | |
68e33151 | 1165 | } |
128ea8ab | 1166 | } |
1167 | ||
1168 | /* | |
1169 | * Add MAC mobility extended community to attribute. | |
1170 | */ | |
d7c0a89a | 1171 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 1172 | { |
1173 | struct ecommunity ecom_tmp; | |
1174 | struct ecommunity_val eval; | |
d7c0a89a | 1175 | uint8_t *ecom_val_ptr; |
f6e07e1b | 1176 | uint32_t i; |
d7c0a89a | 1177 | uint8_t *pnt; |
d62a17ae | 1178 | int type = 0; |
1179 | int sub_type = 0; | |
b53e67a3 | 1180 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 1181 | |
1182 | /* Build MM */ | |
1183 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
1184 | ||
1185 | /* Find current MM ecommunity */ | |
421bb26a | 1186 | ecom_val_ptr = NULL; |
d62a17ae | 1187 | |
b53e67a3 DA |
1188 | if (ecomm) { |
1189 | for (i = 0; i < ecomm->size; i++) { | |
1190 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 1191 | type = *pnt++; |
1192 | sub_type = *pnt++; | |
1193 | ||
1194 | if (type == ECOMMUNITY_ENCODE_EVPN | |
1195 | && sub_type | |
1196 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 1197 | ecom_val_ptr = |
b53e67a3 | 1198 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 1199 | break; |
1200 | } | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | /* Update the existing MM ecommunity */ | |
421bb26a | 1205 | if (ecom_val_ptr) { |
b53e67a3 | 1206 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 1207 | } |
1208 | /* Add MM to existing */ | |
1209 | else { | |
1210 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
1211 | ecom_tmp.size = 1; | |
34540b0d | 1212 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1213 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 1214 | |
b53e67a3 DA |
1215 | if (ecomm) |
1216 | bgp_attr_set_ecommunity( | |
1217 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 1218 | else |
b53e67a3 DA |
1219 | bgp_attr_set_ecommunity(attr, |
1220 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 1221 | } |
128ea8ab | 1222 | } |
1223 | ||
1224 | /* Install EVPN route into zebra. */ | |
d62a17ae | 1225 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
1226 | const struct prefix_evpn *p, |
1227 | struct bgp_path_info *pi) | |
128ea8ab | 1228 | { |
d62a17ae | 1229 | int ret; |
d594a14c | 1230 | uint8_t flags; |
58cf0823 | 1231 | int flood_control = VXLAN_FLOOD_DISABLED; |
9c7edc03 | 1232 | uint32_t seq; |
128ea8ab | 1233 | |
d594a14c AK |
1234 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1235 | flags = 0; | |
9c7edc03 AK |
1236 | |
1237 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
1238 | if (pi->attr->sticky) | |
1239 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1240 | if (pi->attr->default_gw) | |
1241 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
1242 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1243 | pi->attr->router_flag) | |
1244 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1245 | ||
1246 | seq = mac_mobility_seqnum(pi->attr); | |
1247 | /* if local ES notify zebra that this is a sync path */ | |
1248 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
1249 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1250 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
1251 | SET_FLAG(flags, | |
1252 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1253 | } | |
1254 | } else { | |
1255 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
1256 | return 0; | |
1257 | ||
1258 | /* if a local path is being turned around and sent | |
1259 | * to zebra it is because it is a sync path on | |
1260 | * a local ES | |
1261 | */ | |
1262 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1263 | /* supply the highest peer seq number to zebra | |
1264 | * for MM seq syncing | |
1265 | */ | |
1266 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
1267 | /* if any of the paths from the peer have the ROUTER | |
1268 | * flag set install the local entry as a router entry | |
1269 | */ | |
1270 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1271 | (pi->attr->es_flags & | |
1272 | ATTR_ES_PEER_ROUTER)) | |
1273 | SET_FLAG(flags, | |
1274 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1275 | ||
1276 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
1277 | SET_FLAG(flags, | |
1278 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1279 | } | |
1280 | ||
d594a14c | 1281 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1282 | bgp, vpn, p, |
1283 | (is_evpn_prefix_ipaddr_none(p) | |
1284 | ? NULL /* MAC update */ | |
1285 | : evpn_type2_path_info_get_mac( | |
1286 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1287 | pi->attr->nexthop, 1, flags, seq, |
1288 | bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
1289 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
1290 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 1291 | } else { |
2a3f51cf | 1292 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
1293 | case PMSI_TNLTYPE_INGR_REPL: |
1294 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
1295 | break; | |
1296 | ||
1297 | case PMSI_TNLTYPE_PIM_SM: | |
1298 | flood_control = VXLAN_FLOOD_PIM_SM; | |
1299 | break; | |
1300 | ||
58cf0823 DS |
1301 | case PMSI_TNLTYPE_NO_INFO: |
1302 | case PMSI_TNLTYPE_RSVP_TE_P2MP: | |
1303 | case PMSI_TNLTYPE_MLDP_P2MP: | |
1304 | case PMSI_TNLTYPE_PIM_SSM: | |
1305 | case PMSI_TNLTYPE_PIM_BIDIR: | |
1306 | case PMSI_TNLTYPE_MLDP_MP2MP: | |
b16dd019 AK |
1307 | flood_control = VXLAN_FLOOD_DISABLED; |
1308 | break; | |
1309 | } | |
1310 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1311 | } |
128ea8ab | 1312 | |
d62a17ae | 1313 | return ret; |
128ea8ab | 1314 | } |
1315 | ||
1316 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1317 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1318 | const struct prefix_evpn *p, |
34c7f35f | 1319 | struct bgp_path_info *pi, bool is_sync) |
128ea8ab | 1320 | { |
d62a17ae | 1321 | int ret; |
128ea8ab | 1322 | |
d62a17ae | 1323 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
34c7f35f | 1324 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1325 | bgp, vpn, p, |
1326 | (is_evpn_prefix_ipaddr_none(p) | |
1327 | ? NULL /* MAC update */ | |
1328 | : evpn_type2_path_info_get_mac( | |
1329 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1330 | (is_sync ? zero_vtep_ip : pi->attr->nexthop), 0, 0, 0, |
1331 | NULL); | |
c44ab6f1 AK |
1332 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) |
1333 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1334 | else |
b16dd019 AK |
1335 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1336 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1337 | |
d62a17ae | 1338 | return ret; |
128ea8ab | 1339 | } |
1340 | ||
1341 | /* | |
1342 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1343 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1344 | * from peers. | |
1345 | */ | |
d62a17ae | 1346 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1347 | struct bgp_dest *dest, |
9c7edc03 AK |
1348 | struct bgp_path_info *old_local, |
1349 | struct bgp_path_info *new_select) | |
128ea8ab | 1350 | { |
9bcb3eef | 1351 | struct bgp_dest *global_dest; |
40381db7 | 1352 | struct bgp_path_info *pi; |
d62a17ae | 1353 | afi_t afi = AFI_L2VPN; |
1354 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1355 | |
9c7edc03 | 1356 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1357 | char esi_buf[ESI_STR_LEN]; |
1358 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1359 | struct prefix_evpn *evp = |
1360 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1361 | |
2dbe669b DA |
1362 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1363 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1364 | sizeof(esi_buf)), | |
1365 | new_select ? esi_to_str(&new_select->attr->esi, | |
1366 | esi_buf2, sizeof(esi_buf2)) | |
1367 | : ""); | |
9c7edc03 AK |
1368 | } |
1369 | ||
d62a17ae | 1370 | /* Locate route node in the global EVPN routing table. Note that |
1371 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1372 | * L3VPN routes. | |
1373 | */ | |
34c7f35f SW |
1374 | global_dest = bgp_evpn_global_node_lookup( |
1375 | bgp->rib[afi][safi], afi, safi, | |
1376 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1377 | &vpn->prd, old_local); | |
9bcb3eef | 1378 | if (global_dest) { |
d62a17ae | 1379 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1380 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1381 | |
d62a17ae | 1382 | /* Schedule for processing - withdraws to peers happen from |
1383 | * this table. | |
1384 | */ | |
40381db7 | 1385 | if (pi) |
9bcb3eef DS |
1386 | bgp_process(bgp, global_dest, afi, safi); |
1387 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1388 | } |
128ea8ab | 1389 | |
d62a17ae | 1390 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1391 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1392 | } |
1393 | ||
1394 | /* | |
1395 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1396 | * if appropriate. | |
c44ab6f1 | 1397 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1398 | */ |
c44ab6f1 | 1399 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1400 | struct bgp_dest *dest) |
d62a17ae | 1401 | { |
4b7e6066 DS |
1402 | struct bgp_path_info *old_select, *new_select; |
1403 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1404 | afi_t afi = AFI_L2VPN; |
1405 | safi_t safi = SAFI_EVPN; | |
1406 | int ret = 0; | |
1407 | ||
1408 | /* Compute the best path. */ | |
9bcb3eef | 1409 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1410 | afi, safi); |
1411 | old_select = old_and_new.old; | |
1412 | new_select = old_and_new.new; | |
1413 | ||
1414 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1415 | * update to zebra RIB. |
1416 | * Remote routes and SYNC route (i.e. local routes with | |
1417 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1418 | * change. | |
d62a17ae | 1419 | */ |
1420 | if (old_select && old_select == new_select | |
1421 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1422 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1423 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1424 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1425 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1426 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1427 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1428 | ret = evpn_zebra_install( |
9bcb3eef DS |
1429 | bgp, vpn, |
1430 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1431 | dest), | |
d594a14c | 1432 | old_select); |
1defdda8 | 1433 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1434 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1435 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1436 | return ret; |
1437 | } | |
1438 | ||
1439 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1440 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1441 | |
1442 | /* bestpath has changed; update relevant fields and install or uninstall | |
1443 | * into the zebra RIB. | |
1444 | */ | |
1445 | if (old_select || new_select) | |
9bcb3eef | 1446 | bgp_bump_version(dest); |
d62a17ae | 1447 | |
1448 | if (old_select) | |
9bcb3eef | 1449 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1450 | if (new_select) { |
9bcb3eef DS |
1451 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1452 | bgp_path_info_unset_flag(dest, new_select, | |
1453 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1454 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1455 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1456 | } |
1457 | ||
9c7edc03 AK |
1458 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1459 | * to zebra | |
1460 | */ | |
d62a17ae | 1461 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1462 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1463 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1464 | ret = evpn_zebra_install( |
9bcb3eef DS |
1465 | bgp, vpn, |
1466 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1467 | new_select); |
d594a14c | 1468 | |
d62a17ae | 1469 | /* If an old best existed and it was a "local" route, the only |
1470 | * reason | |
1471 | * it would be supplanted is due to MAC mobility procedures. So, | |
1472 | * we | |
1473 | * need to do an implicit delete and withdraw that route from | |
1474 | * peers. | |
1475 | */ | |
9c7edc03 AK |
1476 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1477 | old_select && old_select->peer == bgp->peer_self | |
1478 | && old_select->type == ZEBRA_ROUTE_BGP | |
1479 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1480 | && vpn) | |
1481 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1482 | old_select, new_select); | |
d62a17ae | 1483 | } else { |
1484 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1485 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1486 | ret = evpn_zebra_uninstall( |
1487 | bgp, vpn, | |
9bcb3eef DS |
1488 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1489 | dest), | |
34c7f35f | 1490 | old_select, false); |
d62a17ae | 1491 | } |
1492 | ||
1493 | /* Clear any route change flags. */ | |
9bcb3eef | 1494 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1495 | |
18ee8310 | 1496 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1497 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1498 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1499 | |
1500 | return ret; | |
128ea8ab | 1501 | } |
1502 | ||
9c7edc03 AK |
1503 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1504 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1505 | { |
40381db7 | 1506 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1507 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1508 | |
9bcb3eef | 1509 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1510 | tmp_pi = tmp_pi->next) { |
1511 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1512 | local_pi = tmp_pi; |
9c7edc03 AK |
1513 | break; |
1514 | } | |
d62a17ae | 1515 | } |
c85c03c7 | 1516 | |
9c7edc03 | 1517 | return local_pi; |
c85c03c7 | 1518 | } |
1519 | ||
5e53dce3 | 1520 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1521 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1522 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1523 | struct attr *attr, int *route_changed) |
342dd0c6 | 1524 | { |
1525 | struct attr *attr_new = NULL; | |
40381db7 | 1526 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1527 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1528 | struct bgp_path_info *local_pi = NULL; |
1529 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1530 | |
5424b7ba | 1531 | *route_changed = 0; |
342dd0c6 | 1532 | /* locate the local route entry if any */ |
9bcb3eef | 1533 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1534 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1535 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1536 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1537 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1538 | local_pi = tmp_pi; | |
342dd0c6 | 1539 | } |
1540 | ||
2bb9eff4 | 1541 | /* |
0437e105 | 1542 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1543 | * Otherwise see if route attr has changed |
523cafc4 | 1544 | */ |
40381db7 | 1545 | if (!local_pi) { |
342dd0c6 | 1546 | |
5424b7ba MK |
1547 | /* route has changed as this is the first entry */ |
1548 | *route_changed = 1; | |
1549 | ||
342dd0c6 | 1550 | /* Add (or update) attribute to hash. */ |
1551 | attr_new = bgp_attr_intern(attr); | |
1552 | ||
1553 | /* create the route info from attribute */ | |
40381db7 | 1554 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1555 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1556 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1557 | |
b57ba6d2 | 1558 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1559 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1560 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1561 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1562 | pi->extra->num_labels = 1; | |
342dd0c6 | 1563 | |
1564 | /* add the route entry to route node*/ | |
9bcb3eef | 1565 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1566 | } else { |
1567 | ||
40381db7 DS |
1568 | tmp_pi = local_pi; |
1569 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1570 | |
1571 | /* attribute changed */ | |
1572 | *route_changed = 1; | |
1573 | ||
342dd0c6 | 1574 | /* The attribute has changed. */ |
1575 | /* Add (or update) attribute to hash. */ | |
1576 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1577 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1578 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1579 | |
1580 | /* Restore route, if needed. */ | |
40381db7 | 1581 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1582 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1583 | |
1584 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1585 | bgp_attr_unintern(&tmp_pi->attr); |
1586 | tmp_pi->attr = attr_new; | |
083ec940 | 1587 | tmp_pi->uptime = monotime(NULL); |
342dd0c6 | 1588 | } |
1589 | } | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | /* update evpn type-5 route entry */ | |
996c9314 | 1594 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1595 | struct attr *src_attr, afi_t src_afi, |
1596 | safi_t src_safi) | |
342dd0c6 | 1597 | { |
1598 | afi_t afi = AFI_L2VPN; | |
1599 | safi_t safi = SAFI_EVPN; | |
1600 | struct attr attr; | |
9bcb3eef | 1601 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1602 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1603 | int route_changed = 0; |
342dd0c6 | 1604 | |
5e53dce3 T |
1605 | bgp_evpn = bgp_get_evpn(); |
1606 | if (!bgp_evpn) | |
faafdfa8 | 1607 | return 0; |
342dd0c6 | 1608 | |
2f69f6d3 | 1609 | /* Build path attribute for this route - use the source attr, if |
1610 | * present, else treat as locally originated. | |
1611 | */ | |
1612 | if (src_attr) | |
6f4f49b2 | 1613 | attr = *src_attr; |
2f69f6d3 | 1614 | else { |
6006b807 | 1615 | memset(&attr, 0, sizeof(attr)); |
0f05ea43 | 1616 | bgp_attr_default_set(&attr, bgp_vrf, BGP_ORIGIN_IGP); |
2f69f6d3 | 1617 | } |
5394a276 | 1618 | |
5394a276 CS |
1619 | /* Advertise Primary IP (PIP) is enabled, send individual |
1620 | * IP (default instance router-id) as nexthop. | |
1621 | * PIP is disabled or vrr interface is not present | |
27727001 | 1622 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1623 | */ |
1624 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1625 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1626 | attr.nexthop = bgp_vrf->originator_ip; | |
1627 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1628 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1629 | } else { |
27727001 CS |
1630 | /* copy sys rmac */ |
1631 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1632 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1633 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1634 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1635 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1636 | if (bgp_debug_zebra(NULL)) |
1637 | zlog_debug( | |
1638 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1639 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1640 | } |
1641 | ||
c0d72166 DS |
1642 | if (bgp_debug_zebra(NULL)) |
1643 | zlog_debug( | |
1644 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1645 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1646 | &attr.nexthop); | |
5394a276 | 1647 | |
342dd0c6 | 1648 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1649 | |
6c995628 AD |
1650 | if (src_afi == AFI_IP6 && |
1651 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1652 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1653 | if (src_attr && | |
1654 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1655 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1656 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1657 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1658 | &src_attr->mp_nexthop_global, |
1659 | sizeof(struct in6_addr)); | |
1660 | } | |
1661 | } else if (src_afi == AFI_IP && | |
1662 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1663 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1664 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1665 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1666 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1667 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1668 | &src_attr->nexthop, sizeof(struct in_addr)); |
1669 | } | |
1670 | } | |
1671 | ||
342dd0c6 | 1672 | /* Setup RT and encap extended community */ |
1673 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1674 | ||
1675 | /* get the route node in global table */ | |
34c7f35f SW |
1676 | dest = bgp_evpn_global_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1677 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 1678 | assert(dest); |
342dd0c6 | 1679 | |
1680 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1681 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1682 | &route_changed); |
342dd0c6 | 1683 | |
1684 | /* schedule for processing and unlock node */ | |
5424b7ba | 1685 | if (route_changed) { |
9bcb3eef DS |
1686 | bgp_process(bgp_evpn, dest, afi, safi); |
1687 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1688 | } |
342dd0c6 | 1689 | |
1690 | /* uninten temporary */ | |
5ee65f6f | 1691 | if (!src_attr) |
1692 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1693 | return 0; |
1694 | } | |
1695 | ||
9c7edc03 | 1696 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1697 | struct bgp_dest *dest, uint32_t loc_seq, |
1698 | uint32_t *max_sync_seq, bool *active_on_peer, | |
36bac85c AK |
1699 | bool *peer_router, bool *proxy_from_peer, |
1700 | const struct ethaddr *mac) | |
9c7edc03 AK |
1701 | { |
1702 | struct bgp_path_info *tmp_pi; | |
1703 | struct bgp_path_info *second_best_path = NULL; | |
1704 | uint32_t tmp_mm_seq = 0; | |
1705 | esi_t *tmp_esi; | |
1706 | int paths_eq; | |
36bac85c AK |
1707 | struct ethaddr *tmp_mac; |
1708 | bool mac_cmp = false; | |
1709 | struct prefix_evpn *evp = (struct prefix_evpn *)&dest->p; | |
1710 | ||
1711 | ||
1712 | /* mac comparison is not needed for MAC-only routes */ | |
1713 | if (mac && !is_evpn_prefix_ipaddr_none(evp)) | |
1714 | mac_cmp = true; | |
9c7edc03 AK |
1715 | |
1716 | /* find the best non-local path. a local path can only be present | |
1717 | * as best path | |
1718 | */ | |
09319b4e DS |
1719 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1720 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1721 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1722 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1723 | continue; | |
1724 | ||
36bac85c AK |
1725 | /* ignore paths that have a different mac */ |
1726 | if (mac_cmp) { | |
1727 | tmp_mac = evpn_type2_path_info_get_mac(tmp_pi); | |
1728 | if (memcmp(mac, tmp_mac, sizeof(*mac))) | |
1729 | continue; | |
1730 | } | |
1731 | ||
9c7edc03 AK |
1732 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, |
1733 | second_best_path, &paths_eq)) | |
1734 | second_best_path = tmp_pi; | |
1735 | } | |
1736 | ||
1737 | if (!second_best_path) | |
1738 | return; | |
1739 | ||
1740 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1741 | /* if this has the same ES desination as the local path | |
1742 | * it is a sync path | |
1743 | */ | |
1744 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1745 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1746 | if (tmp_mm_seq < loc_seq) | |
1747 | return; | |
1748 | ||
1749 | /* we have a non-proxy path from the ES peer. */ | |
1750 | if (second_best_path->attr->es_flags & | |
1751 | ATTR_ES_PROXY_ADVERT) { | |
1752 | *proxy_from_peer = true; | |
1753 | } else { | |
1754 | *active_on_peer = true; | |
1755 | } | |
1756 | ||
1757 | if (second_best_path->attr->router_flag) | |
1758 | *peer_router = true; | |
1759 | ||
1760 | /* we use both proxy and non-proxy imports to | |
1761 | * determine the max sync sequence | |
1762 | */ | |
1763 | if (tmp_mm_seq > *max_sync_seq) | |
1764 | *max_sync_seq = tmp_mm_seq; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1769 | * This is need for MM sequence number syncing and proxy advertisement. | |
1770 | * Note: The local path can only exist as a best path in the | |
1771 | * VPN route table. It will take precedence over all sync paths. | |
1772 | */ | |
1773 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1774 | struct bgp_dest *dest, |
1775 | struct attr *attr, | |
36bac85c AK |
1776 | uint32_t loc_seq, bool setup_sync, |
1777 | const struct ethaddr *mac) | |
9c7edc03 AK |
1778 | { |
1779 | esi_t *esi; | |
752eed47 DS |
1780 | struct prefix_evpn *evp = |
1781 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1782 | |
1783 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1784 | return; | |
1785 | ||
1786 | esi = bgp_evpn_attr_get_esi(attr); | |
1787 | if (bgp_evpn_is_esi_valid(esi)) { | |
1788 | if (setup_sync) { | |
1789 | uint32_t max_sync_seq = 0; | |
1790 | bool active_on_peer = false; | |
1791 | bool peer_router = false; | |
1792 | bool proxy_from_peer = false; | |
1793 | ||
09319b4e DS |
1794 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1795 | &max_sync_seq, &active_on_peer, | |
36bac85c AK |
1796 | &peer_router, &proxy_from_peer, |
1797 | mac); | |
9c7edc03 AK |
1798 | attr->mm_sync_seqnum = max_sync_seq; |
1799 | if (active_on_peer) | |
1800 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1801 | else | |
1802 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1803 | if (proxy_from_peer) | |
1804 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1805 | else | |
1806 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1807 | if (peer_router) | |
1808 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1809 | else | |
1810 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1811 | ||
1812 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1813 | char esi_buf[ESI_STR_LEN]; |
1814 | ||
2dbe669b DA |
1815 | zlog_debug( |
1816 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1817 | evp, | |
9c7edc03 | 1818 | esi_to_str(esi, esi_buf, |
2dbe669b | 1819 | sizeof(esi_buf)), |
9c7edc03 | 1820 | max_sync_seq, |
2dbe669b DA |
1821 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1822 | ? "peer-active " | |
1823 | : "", | |
1824 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1825 | ? "peer-proxy " | |
1826 | : "", | |
1827 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1828 | ? "peer-router " | |
1829 | : ""); | |
9c7edc03 AK |
1830 | } |
1831 | } | |
1832 | } else { | |
1833 | attr->mm_sync_seqnum = 0; | |
1834 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1835 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1836 | } | |
1837 | } | |
1838 | ||
128ea8ab | 1839 | /* |
852d9f97 | 1840 | * Create or update EVPN route entry. This could be in the VNI route tables |
128ea8ab | 1841 | * or the global route table. |
1842 | */ | |
d62a17ae | 1843 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1844 | afi_t afi, safi_t safi, |
1845 | struct bgp_dest *dest, struct attr *attr, | |
852d9f97 SW |
1846 | const struct ethaddr *mac, |
1847 | const struct ipaddr *ip, int add, | |
34c7f35f SW |
1848 | struct bgp_path_info **pi, uint8_t flags, |
1849 | uint32_t seq, bool vpn_rt, bool *old_is_sync) | |
d62a17ae | 1850 | { |
40381db7 DS |
1851 | struct bgp_path_info *tmp_pi; |
1852 | struct bgp_path_info *local_pi; | |
d62a17ae | 1853 | struct attr *attr_new; |
b57ba6d2 | 1854 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1855 | uint32_t num_labels = 1; |
d62a17ae | 1856 | int route_change = 1; |
d7c0a89a | 1857 | uint8_t sticky = 0; |
b54892e0 | 1858 | const struct prefix_evpn *evp; |
d62a17ae | 1859 | |
40381db7 | 1860 | *pi = NULL; |
9bcb3eef | 1861 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1862 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1863 | |
f07e1c99 | 1864 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1865 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1866 | |
1867 | /* If route doesn't exist already, create a new one, if told to. | |
1868 | * Otherwise act based on whether the attributes of the route have | |
1869 | * changed or not. | |
1870 | */ | |
40381db7 | 1871 | if (!local_pi && !add) |
d62a17ae | 1872 | return 0; |
1873 | ||
9c7edc03 AK |
1874 | if (old_is_sync && local_pi) |
1875 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1876 | ||
1877 | /* if a local path is being added with a non-zero esi look | |
1878 | * for SYNC paths from ES peers and bubble up the sync-info | |
1879 | */ | |
36bac85c | 1880 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt, mac); |
9c7edc03 | 1881 | |
f07e1c99 | 1882 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1883 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1884 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1885 | |
40381db7 | 1886 | if (!local_pi) { |
d62a17ae | 1887 | /* Add (or update) attribute to hash. */ |
1888 | attr_new = bgp_attr_intern(attr); | |
1889 | ||
1890 | /* Extract MAC mobility sequence number, if any. */ | |
1891 | attr_new->mm_seqnum = | |
1892 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1893 | attr_new->sticky = sticky; | |
1894 | ||
1895 | /* Create new route with its attribute. */ | |
40381db7 | 1896 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1897 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1898 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1899 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1900 | |
1901 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1902 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1903 | |
1904 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1905 | * Only attach second label if we are advertising two labels for | |
1906 | * type-2 routes. | |
1907 | */ | |
996c9314 LB |
1908 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1909 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1910 | vni_t l3vni; |
1911 | ||
1912 | l3vni = bgpevpn_get_l3vni(vpn); | |
1913 | if (l3vni) { | |
1914 | vni2label(l3vni, &label[1]); | |
1915 | num_labels++; | |
1916 | } | |
1917 | } | |
d62a17ae | 1918 | |
40381db7 DS |
1919 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1920 | tmp_pi->extra->num_labels = num_labels; | |
34c7f35f | 1921 | |
852d9f97 SW |
1922 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1923 | if (mac) | |
1924 | evpn_type2_path_info_set_mac(tmp_pi, *mac); | |
1925 | else if (ip) | |
1926 | evpn_type2_path_info_set_ip(tmp_pi, *ip); | |
1927 | } | |
34c7f35f | 1928 | |
0ca10580 CS |
1929 | /* Mark route as self type-2 route */ |
1930 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1931 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1932 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1933 | } else { |
40381db7 DS |
1934 | tmp_pi = local_pi; |
1935 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1936 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1937 | route_change = 0; |
1938 | else { | |
c48d9f5f MK |
1939 | /* |
1940 | * The attributes have changed, type-2 routes needs to | |
1941 | * be advertised with right labels. | |
1942 | */ | |
1943 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1944 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1945 | && CHECK_FLAG(vpn->flags, | |
1946 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1947 | vni_t l3vni; |
1948 | ||
1949 | l3vni = bgpevpn_get_l3vni(vpn); | |
1950 | if (l3vni) { | |
1951 | vni2label(l3vni, &label[1]); | |
1952 | num_labels++; | |
1953 | } | |
1954 | } | |
40381db7 DS |
1955 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1956 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1957 | |
852d9f97 SW |
1958 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1959 | if (mac) | |
1960 | evpn_type2_path_info_set_mac(tmp_pi, | |
1961 | *mac); | |
1962 | else if (ip) | |
1963 | evpn_type2_path_info_set_ip(tmp_pi, | |
1964 | *ip); | |
1965 | } | |
34c7f35f | 1966 | |
d62a17ae | 1967 | /* The attribute has changed. */ |
1968 | /* Add (or update) attribute to hash. */ | |
1969 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1970 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1971 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1972 | |
f07e1c99 | 1973 | /* Extract MAC mobility sequence number, if any. */ |
1974 | attr_new->mm_seqnum = | |
1975 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1976 | attr_new->sticky = sticky; | |
1977 | ||
d62a17ae | 1978 | /* Restore route, if needed. */ |
40381db7 | 1979 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1980 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1981 | |
1982 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1983 | bgp_attr_unintern(&tmp_pi->attr); |
1984 | tmp_pi->attr = attr_new; | |
083ec940 | 1985 | tmp_pi->uptime = monotime(NULL); |
d62a17ae | 1986 | } |
1987 | } | |
1988 | ||
58bff4d1 AK |
1989 | /* local MAC-IP routes in the VNI table are linked to |
1990 | * the destination ES | |
26c03e43 AK |
1991 | */ |
1992 | if (route_change && vpn_rt | |
1993 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1994 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1995 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1996 | ||
d62a17ae | 1997 | /* Return back the route entry. */ |
40381db7 | 1998 | *pi = tmp_pi; |
d62a17ae | 1999 | return route_change; |
128ea8ab | 2000 | } |
2001 | ||
ec0ab544 | 2002 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
2003 | struct bgpevpn *vpn, |
2004 | struct bgp_dest *dest) | |
ec0ab544 AK |
2005 | { |
2006 | struct bgp_path_info *tmp_ri; | |
2007 | struct bgp_path_info *curr_select = NULL; | |
2008 | ||
9bcb3eef DS |
2009 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
2010 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
2011 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
2012 | curr_select = tmp_ri; | |
2013 | break; | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
2018 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
2019 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
2020 | evpn_zebra_install(bgp, vpn, | |
2021 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
2022 | curr_select); | |
ec0ab544 AK |
2023 | } |
2024 | ||
6d8c603a AK |
2025 | /* |
2026 | * If the local route was not selected evict it and tell zebra to re-add | |
2027 | * the best remote dest. | |
2028 | * | |
2029 | * Typically a local path added by zebra is expected to be selected as | |
2030 | * best. In which case when a remote path wins as best (later) | |
2031 | * evpn_route_select_install itself evicts the older-local-best path. | |
2032 | * | |
2033 | * However if bgp's add and zebra's add cross paths (race condition) it | |
2034 | * is possible that the local path is no longer the "older" best path. | |
2035 | * It is a path that was never designated as best and hence requires | |
2036 | * additional handling to prevent bgp from injecting and holding on to a | |
2037 | * non-best local path. | |
2038 | */ | |
2039 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
2040 | struct bgpevpn *vpn, | |
9bcb3eef | 2041 | struct bgp_dest *dest, |
9a8897aa | 2042 | struct bgp_path_info *local_pi) |
6d8c603a | 2043 | { |
6d8c603a | 2044 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 2045 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 2046 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 2047 | dest); |
b54892e0 | 2048 | |
9c7edc03 | 2049 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 2050 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
2051 | |
2052 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 2053 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
2054 | } |
2055 | ||
70524092 AK |
2056 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
2057 | const struct prefix_evpn *p, | |
2058 | esi_t *esi) | |
2059 | { | |
2060 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2061 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
2062 | || (is_evpn_prefix_ipaddr_v6(p) |
2063 | && !IN6_IS_ADDR_LINKLOCAL( | |
2064 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
2065 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
2066 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
2067 | } | |
2068 | ||
128ea8ab | 2069 | /* |
2070 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
2071 | * and schedule for processing. | |
2072 | */ | |
d62a17ae | 2073 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 2074 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 2075 | uint32_t seq, esi_t *esi) |
128ea8ab | 2076 | { |
9bcb3eef | 2077 | struct bgp_dest *dest; |
d62a17ae | 2078 | struct attr attr; |
2079 | struct attr *attr_new; | |
1ec31309 | 2080 | int add_l3_ecomm = 0; |
40381db7 | 2081 | struct bgp_path_info *pi; |
d62a17ae | 2082 | afi_t afi = AFI_L2VPN; |
2083 | safi_t safi = SAFI_EVPN; | |
2084 | int route_change; | |
9c7edc03 | 2085 | bool old_is_sync = false; |
852d9f97 | 2086 | bool mac_only = false; |
128ea8ab | 2087 | |
6006b807 | 2088 | memset(&attr, 0, sizeof(attr)); |
128ea8ab | 2089 | |
d62a17ae | 2090 | /* Build path-attribute for this route. */ |
0f05ea43 | 2091 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
d62a17ae | 2092 | attr.nexthop = vpn->originator_ip; |
2093 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2094 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 2095 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 2096 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
2097 | attr.router_flag = CHECK_FLAG(flags, |
2098 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
2099 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
2100 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
2101 | ||
2102 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 2103 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
2104 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
2105 | } | |
2106 | ||
be41eb68 | 2107 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 2108 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 2109 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 2110 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 2111 | } |
be41eb68 | 2112 | |
2304139a | 2113 | /* router mac is only needed for type-2 routes here. */ |
2114 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
2115 | uint8_t af_flags = 0; | |
2116 | ||
2117 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
2118 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
2119 | ||
2120 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
2121 | } | |
2122 | ||
9c7edc03 | 2123 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
2124 | char buf3[ESI_STR_LEN]; |
2125 | ||
23d0a753 | 2126 | zlog_debug( |
47f5eb74 | 2127 | "VRF %s vni %u type-%u route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 | 2128 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
47f5eb74 | 2129 | : "None", |
2130 | vpn->vni, p->prefix.route_type, p, &attr.rmac, | |
2131 | &attr.mp_nexthop_global_in, | |
23d0a753 | 2132 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 2133 | } |
0ca10580 | 2134 | |
a21bd7a3 | 2135 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 2136 | |
1ec31309 | 2137 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
2138 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
2139 | * these routes. | |
2140 | */ | |
70524092 AK |
2141 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2142 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 2143 | |
2144 | /* Set up extended community. */ | |
2145 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 2146 | |
852d9f97 SW |
2147 | /* First, create (or fetch) route node within the VNI. |
2148 | * NOTE: There is no RD here. | |
2149 | */ | |
2150 | dest = bgp_evpn_vni_node_get(vpn, p, NULL); | |
2151 | ||
2152 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
2153 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
2154 | mac_only = true; | |
128ea8ab | 2155 | |
d62a17ae | 2156 | /* Create or update route entry. */ |
34c7f35f | 2157 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2158 | bgp, vpn, afi, safi, dest, &attr, |
2159 | (mac_only ? NULL : &p->prefix.macip_addr.mac), NULL /* ip */, 1, | |
34c7f35f | 2160 | &pi, flags, seq, true /* setup_sync */, &old_is_sync); |
40381db7 DS |
2161 | assert(pi); |
2162 | attr_new = pi->attr; | |
128ea8ab | 2163 | |
6d8c603a AK |
2164 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2165 | bgp_path_info_lock(pi); | |
7ab604ab CS |
2166 | |
2167 | /* Perform route selection. Normally, the local route in the | |
2168 | * VNI is expected to win and be the best route. However, if | |
2169 | * there is a race condition where a host moved from local to | |
2170 | * remote and the remote route was received in BGP just prior | |
2171 | * to the local MACIP notification from zebra, the remote | |
2172 | * route would win, and we should evict the defunct local route | |
2173 | * and (re)install the remote route into zebra. | |
2174 | */ | |
9bcb3eef | 2175 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 2176 | /* |
9a8897aa AK |
2177 | * If the new local route was not selected evict it and tell zebra |
2178 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
2179 | * routes. | |
6d8c603a | 2180 | */ |
9c7edc03 | 2181 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 2182 | route_change = 0; |
9c7edc03 AK |
2183 | } else { |
2184 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2185 | route_change = 0; | |
2186 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
2187 | } else { | |
2188 | bool new_is_sync; | |
2189 | ||
2190 | /* If the local path already existed and is still the | |
2191 | * best path we need to also check if it transitioned | |
2192 | * from being a sync path to a non-sync path. If it | |
2193 | * it did we need to notify zebra that the sync-path | |
2194 | * has been removed. | |
2195 | */ | |
2196 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2197 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2198 | evpn_zebra_uninstall(bgp, vpn, p, pi, true); |
9c7edc03 | 2199 | } |
9a8897aa | 2200 | } |
6d8c603a AK |
2201 | bgp_path_info_unlock(pi); |
2202 | ||
9bcb3eef | 2203 | bgp_dest_unlock_node(dest); |
128ea8ab | 2204 | |
d62a17ae | 2205 | /* If this is a new route or some attribute has changed, export the |
2206 | * route to the global table. The route will be advertised to peers | |
2207 | * from there. Note that this table is a 2-level tree (RD-level + | |
2208 | * Prefix-level) similar to L3VPN routes. | |
2209 | */ | |
2210 | if (route_change) { | |
40381db7 | 2211 | struct bgp_path_info *global_pi; |
128ea8ab | 2212 | |
34c7f35f SW |
2213 | dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, |
2214 | p, &vpn->prd, NULL); | |
852d9f97 SW |
2215 | update_evpn_route_entry( |
2216 | bgp, vpn, afi, safi, dest, attr_new, NULL /* mac */, | |
2217 | NULL /* ip */, 1, &global_pi, flags, seq, | |
2218 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 2219 | |
d62a17ae | 2220 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
2221 | bgp_process(bgp, dest, afi, safi); |
2222 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2223 | } |
128ea8ab | 2224 | |
d62a17ae | 2225 | /* Unintern temporary. */ |
2226 | aspath_unintern(&attr.aspath); | |
128ea8ab | 2227 | |
d62a17ae | 2228 | return 0; |
128ea8ab | 2229 | } |
2230 | ||
50f74cf1 | 2231 | /* |
2232 | * Delete EVPN route entry. | |
2233 | * The entry can be in ESI/VNI table or the global table. | |
2234 | */ | |
185fb14a | 2235 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 2236 | struct bgp_dest *dest, |
40381db7 | 2237 | struct bgp_path_info **pi) |
342dd0c6 | 2238 | { |
40381db7 | 2239 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 2240 | |
40381db7 | 2241 | *pi = NULL; |
342dd0c6 | 2242 | |
50f74cf1 | 2243 | /* Now, find matching route. */ |
9bcb3eef | 2244 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 2245 | tmp_pi = tmp_pi->next) |
40381db7 DS |
2246 | if (tmp_pi->peer == bgp->peer_self |
2247 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2248 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 2249 | break; |
2250 | ||
40381db7 | 2251 | *pi = tmp_pi; |
342dd0c6 | 2252 | |
2253 | /* Mark route for delete. */ | |
40381db7 | 2254 | if (tmp_pi) |
9bcb3eef | 2255 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 2256 | } |
2257 | ||
2258 | /* Delete EVPN type5 route */ | |
996c9314 | 2259 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2260 | { |
2261 | afi_t afi = AFI_L2VPN; | |
2262 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 2263 | struct bgp_dest *dest = NULL; |
40381db7 | 2264 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2265 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2266 | |
5e53dce3 T |
2267 | bgp_evpn = bgp_get_evpn(); |
2268 | if (!bgp_evpn) | |
faafdfa8 | 2269 | return 0; |
342dd0c6 | 2270 | |
2271 | /* locate the global route entry for this type-5 prefix */ | |
34c7f35f SW |
2272 | dest = bgp_evpn_global_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
2273 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 2274 | if (!dest) |
342dd0c6 | 2275 | return 0; |
2276 | ||
9bcb3eef | 2277 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 2278 | if (pi) |
9bcb3eef DS |
2279 | bgp_process(bgp_evpn, dest, afi, safi); |
2280 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 2281 | return 0; |
2282 | } | |
2283 | ||
128ea8ab | 2284 | /* |
2285 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2286 | * schedule for processing. | |
2287 | */ | |
d62a17ae | 2288 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2289 | struct prefix_evpn *p) | |
2290 | { | |
9bcb3eef | 2291 | struct bgp_dest *dest, *global_dest; |
40381db7 | 2292 | struct bgp_path_info *pi; |
d62a17ae | 2293 | afi_t afi = AFI_L2VPN; |
2294 | safi_t safi = SAFI_EVPN; | |
2295 | ||
2296 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2297 | * there | |
2298 | * is nothing further to do. | |
852d9f97 | 2299 | * NOTE: There is no RD here. |
d62a17ae | 2300 | */ |
852d9f97 | 2301 | dest = bgp_evpn_vni_node_lookup(vpn, p, NULL); |
9bcb3eef | 2302 | if (!dest) |
d62a17ae | 2303 | return 0; |
2304 | ||
2305 | /* Next, locate route node in the global EVPN routing table. Note that | |
2306 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2307 | * L3VPN routes. | |
2308 | */ | |
34c7f35f SW |
2309 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
2310 | safi, p, &vpn->prd, NULL); | |
9bcb3eef | 2311 | if (global_dest) { |
d62a17ae | 2312 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 2313 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 2314 | |
2315 | /* Schedule for processing - withdraws to peers happen from | |
2316 | * this table. | |
2317 | */ | |
40381db7 | 2318 | if (pi) |
9bcb3eef DS |
2319 | bgp_process(bgp, global_dest, afi, safi); |
2320 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 2321 | } |
2322 | ||
2323 | /* Delete route entry in the VNI route table. This can just be removed. | |
2324 | */ | |
9bcb3eef | 2325 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 2326 | if (pi) { |
9bcb3eef DS |
2327 | bgp_path_info_reap(dest, pi); |
2328 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 2329 | } |
9bcb3eef | 2330 | bgp_dest_unlock_node(dest); |
d62a17ae | 2331 | |
2332 | return 0; | |
128ea8ab | 2333 | } |
2334 | ||
70524092 AK |
2335 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2336 | struct bgp_dest *dest, | |
2337 | struct bgp_path_info *local_pi, | |
2338 | const char *caller) | |
9c7edc03 AK |
2339 | { |
2340 | afi_t afi = AFI_L2VPN; | |
2341 | safi_t safi = SAFI_EVPN; | |
2342 | struct bgp_path_info *pi; | |
2343 | struct attr attr; | |
2344 | struct attr *attr_new; | |
2345 | uint32_t seq; | |
2346 | int add_l3_ecomm = 0; | |
09319b4e | 2347 | struct bgp_dest *global_dest; |
9c7edc03 | 2348 | struct bgp_path_info *global_pi; |
34c7f35f | 2349 | struct prefix_evpn evp; |
9c7edc03 AK |
2350 | int route_change; |
2351 | bool old_is_sync = false; | |
2352 | ||
2353 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
2354 | return; | |
2355 | ||
34c7f35f SW |
2356 | /* |
2357 | * VNI table MAC-IP prefixes don't have MAC so make sure it's set from | |
2358 | * path info here. | |
2359 | */ | |
852d9f97 SW |
2360 | if (is_evpn_prefix_ipaddr_none((struct prefix_evpn *)&dest->p)) { |
2361 | /* VNI MAC -> Global */ | |
2362 | evpn_type2_prefix_global_copy( | |
2363 | &evp, (struct prefix_evpn *)&dest->p, NULL /* mac */, | |
2364 | evpn_type2_path_info_get_ip(local_pi)); | |
2365 | } else { | |
2366 | /* VNI IP -> Global */ | |
2367 | evpn_type2_prefix_global_copy( | |
2368 | &evp, (struct prefix_evpn *)&dest->p, | |
2369 | evpn_type2_path_info_get_mac(local_pi), NULL /* ip */); | |
2370 | } | |
34c7f35f | 2371 | |
9c7edc03 AK |
2372 | /* |
2373 | * Build attribute per local route as the MAC mobility and | |
2374 | * some other values could differ for different routes. The | |
2375 | * attributes will be shared in the hash table. | |
2376 | */ | |
0f05ea43 | 2377 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
9c7edc03 AK |
2378 | attr.nexthop = vpn->originator_ip; |
2379 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2380 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2381 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2382 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2383 | attr.es_flags = local_pi->attr->es_flags; | |
2384 | if (local_pi->attr->default_gw) { | |
2385 | attr.default_gw = 1; | |
34c7f35f | 2386 | if (is_evpn_prefix_ipaddr_v6(&evp)) |
9c7edc03 AK |
2387 | attr.router_flag = 1; |
2388 | } | |
2389 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
34c7f35f | 2390 | bgp_evpn_get_rmac_nexthop(vpn, &evp, &attr, local_pi->extra->af_flags); |
9c7edc03 AK |
2391 | vni2label(vpn->vni, &(attr.label)); |
2392 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2393 | * using L3 VNI for type-2 routes also. | |
2394 | */ | |
70524092 | 2395 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
34c7f35f | 2396 | vpn, &evp, |
70524092 | 2397 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); |
9c7edc03 AK |
2398 | |
2399 | /* Set up extended community. */ | |
2400 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2401 | seq = mac_mobility_seqnum(local_pi->attr); | |
2402 | ||
2403 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2404 | char buf3[ESI_STR_LEN]; |
2405 | ||
23d0a753 | 2406 | zlog_debug( |
c0d72166 | 2407 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2408 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2409 | : " ", | |
34c7f35f | 2410 | vpn->vni, &evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2411 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2412 | attr.es_flags, caller); | |
9c7edc03 AK |
2413 | } |
2414 | ||
2415 | /* Update the route entry. */ | |
09319b4e | 2416 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2417 | bgp, vpn, afi, safi, dest, &attr, NULL /* mac */, NULL /* ip */, |
2418 | 0, &pi, 0, seq, true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2419 | |
2420 | assert(pi); | |
2421 | attr_new = pi->attr; | |
2422 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2423 | bgp_path_info_lock(pi); | |
2424 | ||
2425 | /* Perform route selection. Normally, the local route in the | |
2426 | * VNI is expected to win and be the best route. However, | |
2427 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2428 | * that causes best selection to be based on next hop), a | |
2429 | * remote route could win. If the local route is the best, | |
2430 | * ensure it is updated in the global EVPN route table and | |
2431 | * advertised to peers; otherwise, ensure it is evicted and | |
2432 | * (re)install the remote route into zebra. | |
2433 | */ | |
09319b4e | 2434 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2435 | |
2436 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2437 | route_change = 0; | |
2438 | } else { | |
2439 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2440 | route_change = 0; | |
09319b4e | 2441 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2442 | } else { |
2443 | bool new_is_sync; | |
2444 | ||
2445 | /* If the local path already existed and is still the | |
2446 | * best path we need to also check if it transitioned | |
2447 | * from being a sync path to a non-sync path. If it | |
2448 | * it did we need to notify zebra that the sync-path | |
2449 | * has been removed. | |
2450 | */ | |
2451 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2452 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2453 | evpn_zebra_uninstall(bgp, vpn, &evp, pi, true); |
9c7edc03 AK |
2454 | } |
2455 | } | |
2456 | ||
2457 | ||
2458 | /* unlock pi */ | |
2459 | bgp_path_info_unlock(pi); | |
2460 | ||
2461 | if (route_change) { | |
2462 | /* Update route in global routing table. */ | |
34c7f35f SW |
2463 | global_dest = bgp_evpn_global_node_get( |
2464 | bgp->rib[afi][safi], afi, safi, &evp, &vpn->prd, NULL); | |
09319b4e DS |
2465 | assert(global_dest); |
2466 | update_evpn_route_entry( | |
852d9f97 SW |
2467 | bgp, vpn, afi, safi, global_dest, attr_new, |
2468 | NULL /* mac */, NULL /* ip */, 0, &global_pi, 0, | |
2469 | mac_mobility_seqnum(attr_new), false /* setup_sync */, | |
2470 | NULL /* old_is_sync */); | |
9c7edc03 AK |
2471 | |
2472 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2473 | bgp_process(bgp, global_dest, afi, safi); |
2474 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2475 | } |
2476 | ||
2477 | /* Unintern temporary. */ | |
2478 | aspath_unintern(&attr.aspath); | |
2479 | } | |
2480 | ||
852d9f97 SW |
2481 | static void update_type2_route(struct bgp *bgp, struct bgpevpn *vpn, |
2482 | struct bgp_dest *dest) | |
2483 | { | |
2484 | struct bgp_path_info *tmp_pi; | |
2485 | ||
2486 | const struct prefix_evpn *evp = | |
2487 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2488 | ||
2489 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2490 | return; | |
2491 | ||
2492 | /* Identify local route. */ | |
2493 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; | |
2494 | tmp_pi = tmp_pi->next) { | |
2495 | if (tmp_pi->peer == bgp->peer_self && | |
2496 | tmp_pi->type == ZEBRA_ROUTE_BGP && | |
2497 | tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
2498 | break; | |
2499 | } | |
2500 | ||
2501 | if (!tmp_pi) | |
2502 | return; | |
2503 | ||
2504 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, __func__); | |
2505 | } | |
2506 | ||
128ea8ab | 2507 | /* |
2508 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2509 | * be scheduled for advertise to peers. | |
2510 | */ | |
852d9f97 | 2511 | static void update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 2512 | { |
9bcb3eef | 2513 | struct bgp_dest *dest; |
d62a17ae | 2514 | |
852d9f97 SW |
2515 | /* Walk this VNI's route MAC & IP table and update local type-2 |
2516 | * routes. For any routes updated, update corresponding entry in the | |
2517 | * global table too. | |
d62a17ae | 2518 | */ |
852d9f97 SW |
2519 | for (dest = bgp_table_top(vpn->mac_table); dest; |
2520 | dest = bgp_route_next(dest)) | |
2521 | update_type2_route(bgp, vpn, dest); | |
d62a17ae | 2522 | |
852d9f97 SW |
2523 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2524 | dest = bgp_route_next(dest)) | |
2525 | update_type2_route(bgp, vpn, dest); | |
128ea8ab | 2526 | } |
2527 | ||
2528 | /* | |
2529 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2530 | * global routing table. These are also scheduled for withdraw from peers. | |
2531 | */ | |
17151ae9 | 2532 | static void delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2533 | { |
d62a17ae | 2534 | afi_t afi; |
2535 | safi_t safi; | |
9bcb3eef | 2536 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2537 | struct bgp_table *table; |
40381db7 | 2538 | struct bgp_path_info *pi; |
128ea8ab | 2539 | |
d62a17ae | 2540 | afi = AFI_L2VPN; |
2541 | safi = SAFI_EVPN; | |
128ea8ab | 2542 | |
9bcb3eef DS |
2543 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2544 | (struct prefix *)&vpn->prd); | |
17151ae9 | 2545 | if (rddest) { |
9bcb3eef DS |
2546 | table = bgp_dest_get_bgp_table_info(rddest); |
2547 | for (dest = bgp_table_top(table); dest; | |
2548 | dest = bgp_route_next(dest)) { | |
2549 | const struct prefix_evpn *evp = | |
2550 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2551 | dest); | |
128ea8ab | 2552 | |
d62a17ae | 2553 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2554 | continue; | |
128ea8ab | 2555 | |
9bcb3eef | 2556 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2557 | if (pi) |
9bcb3eef | 2558 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2559 | } |
128ea8ab | 2560 | |
17151ae9 | 2561 | /* Unlock RD node. */ |
9bcb3eef | 2562 | bgp_dest_unlock_node(rddest); |
17151ae9 | 2563 | } |
128ea8ab | 2564 | } |
2565 | ||
852d9f97 SW |
2566 | static void delete_vni_type2_route(struct bgp *bgp, struct bgp_dest *dest) |
2567 | { | |
2568 | struct bgp_path_info *pi; | |
2569 | afi_t afi = AFI_L2VPN; | |
2570 | safi_t safi = SAFI_EVPN; | |
2571 | ||
2572 | const struct prefix_evpn *evp = | |
2573 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2574 | ||
2575 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2576 | return; | |
2577 | ||
2578 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); | |
2579 | ||
2580 | /* Route entry in local table gets deleted immediately. */ | |
2581 | if (pi) | |
2582 | bgp_path_info_reap(dest, pi); | |
2583 | } | |
2584 | ||
2585 | static void delete_vni_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
2586 | { | |
2587 | struct bgp_dest *dest; | |
2588 | ||
2589 | /* Next, walk this VNI's MAC & IP route table and delete local type-2 | |
2590 | * routes. | |
2591 | */ | |
2592 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
2593 | dest = bgp_route_next(dest)) | |
2594 | delete_vni_type2_route(bgp, dest); | |
2595 | ||
2596 | for (dest = bgp_table_top(vpn->ip_table); dest; | |
2597 | dest = bgp_route_next(dest)) | |
2598 | delete_vni_type2_route(bgp, dest); | |
2599 | } | |
2600 | ||
128ea8ab | 2601 | /* |
2602 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2603 | * table as well as the per-VNI route table. | |
2604 | */ | |
852d9f97 | 2605 | static void delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2606 | { |
d62a17ae | 2607 | /* First, walk the global route table for this VNI's type-2 local |
2608 | * routes. | |
2609 | * EVPN routes are a 2-level table, first get the RD table. | |
2610 | */ | |
2611 | delete_global_type2_routes(bgp, vpn); | |
852d9f97 | 2612 | delete_vni_type2_routes(bgp, vpn); |
128ea8ab | 2613 | } |
2614 | ||
2615 | /* | |
2616 | * Delete all routes in the per-VNI route table. | |
2617 | */ | |
852d9f97 | 2618 | static void delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2619 | { |
9bcb3eef | 2620 | struct bgp_dest *dest; |
40381db7 | 2621 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2622 | |
852d9f97 SW |
2623 | /* Walk this VNI's MAC & IP route table and delete all routes. */ |
2624 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
9bcb3eef DS |
2625 | dest = bgp_route_next(dest)) { |
2626 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2627 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2628 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2629 | bgp_path_info_delete(dest, pi); |
2630 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2631 | } |
2632 | } | |
128ea8ab | 2633 | |
852d9f97 SW |
2634 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2635 | dest = bgp_route_next(dest)) { | |
2636 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
2637 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
2638 | bgp_path_info_delete(dest, pi); | |
2639 | bgp_path_info_reap(dest, pi); | |
2640 | } | |
2641 | } | |
128ea8ab | 2642 | } |
2643 | ||
833b8a50 AK |
2644 | /* BUM traffic flood mode per-l2-vni */ |
2645 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2646 | struct bgpevpn *vpn) | |
2647 | { | |
2648 | /* if flooding has been globally disabled per-vni mode is | |
2649 | * not relevant | |
2650 | */ | |
2651 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2652 | return VXLAN_FLOOD_DISABLED; | |
2653 | ||
2654 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2655 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2656 | return VXLAN_FLOOD_PIM_SM; | |
2657 | ||
2658 | /* default is ingress replication */ | |
2659 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2660 | } | |
2661 | ||
128ea8ab | 2662 | /* |
2663 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2664 | * export RT getting modified or change to tunnel IP. Note that these | |
2665 | * situations need the route in the per-VNI table as well as the global | |
2666 | * table to be updated (as attributes change). | |
2667 | */ | |
0ca10580 | 2668 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2669 | { |
d62a17ae | 2670 | int ret; |
2671 | struct prefix_evpn p; | |
128ea8ab | 2672 | |
9c49ac74 AD |
2673 | update_type1_routes_for_evi(bgp, vpn); |
2674 | ||
d62a17ae | 2675 | /* Update and advertise the type-3 route (only one) followed by the |
2676 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2677 | * |
2678 | * RT-3 only if doing head-end replication | |
d62a17ae | 2679 | */ |
833b8a50 AK |
2680 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2681 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2682 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2683 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2684 | if (ret) |
2685 | return ret; | |
2686 | } | |
128ea8ab | 2687 | |
852d9f97 SW |
2688 | update_all_type2_routes(bgp, vpn); |
2689 | return 0; | |
128ea8ab | 2690 | } |
2691 | ||
2692 | /* | |
2693 | * Delete (and withdraw) local routes for specified VNI from the global | |
2694 | * table and per-VNI table. After this, remove all other routes from | |
2695 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2696 | * (advertise-all-vni) being disabled. | |
2697 | */ | |
d62a17ae | 2698 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2699 | { |
d62a17ae | 2700 | int ret; |
2701 | struct prefix_evpn p; | |
128ea8ab | 2702 | |
d62a17ae | 2703 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2704 | * followed by type-3 routes (only one) - for this VNI. | |
2705 | */ | |
852d9f97 | 2706 | delete_all_type2_routes(bgp, vpn); |
128ea8ab | 2707 | |
d62a17ae | 2708 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2709 | ret = delete_evpn_route(bgp, vpn, &p); | |
2710 | if (ret) | |
2711 | return ret; | |
128ea8ab | 2712 | |
d62a17ae | 2713 | /* Delete all routes from the per-VNI table. */ |
852d9f97 SW |
2714 | delete_all_vni_routes(bgp, vpn); |
2715 | return 0; | |
128ea8ab | 2716 | } |
2717 | ||
76d07c7a AK |
2718 | /* |
2719 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2720 | * remove the type-3 route if any. A new type-3 route will be generated | |
2721 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2722 | */ | |
2723 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2724 | struct in_addr mcast_grp) | |
2725 | { | |
2726 | struct prefix_evpn p; | |
2727 | ||
2728 | vpn->mcast_grp = mcast_grp; | |
2729 | ||
2730 | if (is_vni_live(vpn)) { | |
2731 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2732 | delete_evpn_route(bgp, vpn, &p); | |
2733 | } | |
2734 | ||
2735 | return 0; | |
2736 | } | |
2737 | ||
128ea8ab | 2738 | /* |
d1911c26 | 2739 | * There is a tunnel endpoint IP address change for this VNI, delete |
2740 | * prior type-3 route (if needed) and update. | |
2741 | * Note: Route re-advertisement happens elsewhere after other processing | |
2742 | * other changes. | |
128ea8ab | 2743 | */ |
4dabdde3 TA |
2744 | static void handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2745 | struct in_addr originator_ip) | |
128ea8ab | 2746 | { |
d62a17ae | 2747 | struct prefix_evpn p; |
128ea8ab | 2748 | |
4dabdde3 TA |
2749 | if (IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) |
2750 | return; | |
2751 | ||
ddd16ed5 MK |
2752 | /* If VNI is not live, we only need to update the originator ip */ |
2753 | if (!is_vni_live(vpn)) { | |
2754 | vpn->originator_ip = originator_ip; | |
4dabdde3 | 2755 | return; |
ddd16ed5 MK |
2756 | } |
2757 | ||
db0e1937 MK |
2758 | /* Update the tunnel-ip hash */ |
2759 | bgp_tip_del(bgp, &vpn->originator_ip); | |
826c3f6d TA |
2760 | if (bgp_tip_add(bgp, &originator_ip)) |
2761 | /* The originator_ip was not already present in the | |
2762 | * bgp martian next-hop table as a tunnel-ip, so we | |
2763 | * need to go back and filter routes matching the new | |
2764 | * martian next-hop. | |
2765 | */ | |
2766 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
db0e1937 | 2767 | |
d62a17ae | 2768 | /* Need to withdraw type-3 route as the originator IP is part |
2769 | * of the key. | |
2770 | */ | |
2771 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2772 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2773 | |
d62a17ae | 2774 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2775 | vpn->originator_ip = originator_ip; | |
4dabdde3 | 2776 | return; |
185fb14a | 2777 | } |
50f74cf1 | 2778 | |
185fb14a AK |
2779 | static struct bgp_path_info * |
2780 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2781 | struct bgp_dest *dest, struct attr *attr) | |
2782 | { | |
2783 | struct attr *attr_new; | |
2784 | struct bgp_path_info *pi; | |
50f74cf1 | 2785 | |
185fb14a AK |
2786 | /* Add (or update) attribute to hash. */ |
2787 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2788 | |
185fb14a AK |
2789 | /* Create new route with its attribute. */ |
2790 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2791 | attr_new, dest); | |
2792 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2793 | bgp_path_info_extra_get(pi); | |
2794 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2795 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2796 | if (parent_pi->extra) { | |
2797 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2798 | sizeof(pi->extra->label)); | |
2799 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2800 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2801 | } |
34c7f35f | 2802 | |
185fb14a | 2803 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2804 | |
185fb14a | 2805 | return pi; |
50f74cf1 | 2806 | } |
2807 | ||
d3135ba3 | 2808 | /* |
2809 | * Install route entry into the VRF routing table and invoke route selection. | |
2810 | */ | |
2811 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2812 | const struct prefix_evpn *evp, |
40381db7 | 2813 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2814 | { |
9bcb3eef | 2815 | struct bgp_dest *dest; |
40381db7 | 2816 | struct bgp_path_info *pi; |
1ec31309 | 2817 | struct attr attr; |
d3135ba3 | 2818 | struct attr *attr_new; |
c4edf708 | 2819 | int ret = 0; |
d3135ba3 | 2820 | struct prefix p; |
2821 | struct prefix *pp = &p; | |
2822 | afi_t afi = 0; | |
2823 | safi_t safi = 0; | |
5f0c5ec8 | 2824 | bool new_pi = false; |
58bff4d1 AK |
2825 | bool use_l3nhg = false; |
2826 | bool is_l3nhg_active = false; | |
a2299aba | 2827 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2828 | |
2829 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2830 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2831 | |
2dbe669b | 2832 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2833 | zlog_debug( |
2dbe669b DA |
2834 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2835 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2836 | parent_pi->flags); | |
1eb88002 | 2837 | |
d3135ba3 | 2838 | /* Create (or fetch) route within the VRF. */ |
2839 | /* NOTE: There is no RD here. */ | |
3714a385 | 2840 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2841 | afi = AFI_IP; |
2842 | safi = SAFI_UNICAST; | |
9bcb3eef | 2843 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2844 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2845 | afi = AFI_IP6; |
2846 | safi = SAFI_UNICAST; | |
9bcb3eef | 2847 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2848 | } else |
2849 | return 0; | |
2850 | ||
1ec31309 | 2851 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2852 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2853 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2854 | * address for the rest of the code to flow through. In the case of IPv4, | |
2855 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2856 | */ |
6f4f49b2 | 2857 | attr = *parent_pi->attr; |
a2299aba AD |
2858 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2859 | if (afi == AFI_IP6) | |
2860 | evpn_convert_nexthop_to_ipv6(&attr); | |
7226bc40 TA |
2861 | else { |
2862 | attr.nexthop = attr.mp_nexthop_global_in; | |
a2299aba | 2863 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
7226bc40 | 2864 | } |
a2299aba AD |
2865 | } else { |
2866 | ||
2867 | /* | |
2868 | * If gateway IP overlay index is specified in the NLRI of | |
2869 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2870 | * for the prefix in the VRF | |
2871 | */ | |
2872 | if (bgp_debug_zebra(NULL)) { | |
2873 | zlog_debug( | |
2874 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2875 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2876 | buf1, sizeof(buf1)), pp, | |
2877 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2878 | } | |
2879 | ||
2880 | if (afi == AFI_IP6) { | |
2881 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2882 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2883 | sizeof(struct in6_addr)); |
2884 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2885 | } else { | |
860e740b | 2886 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2887 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2888 | } | |
2889 | } | |
1ec31309 | 2890 | |
58bff4d1 AK |
2891 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2892 | &is_l3nhg_active, NULL); | |
2893 | if (use_l3nhg) | |
2894 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2895 | if (is_l3nhg_active) | |
2896 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2897 | ||
d3135ba3 | 2898 | /* Check if route entry is already present. */ |
9bcb3eef | 2899 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2900 | if (pi->extra |
2901 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2902 | break; |
2903 | ||
5f0c5ec8 | 2904 | if (!pi) { |
9bcb3eef | 2905 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2906 | new_pi = true; |
2907 | } else { | |
40381db7 DS |
2908 | if (attrhash_cmp(pi->attr, &attr) |
2909 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2910 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2911 | return 0; |
2912 | } | |
2913 | /* The attribute has changed. */ | |
2914 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2915 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2916 | |
2917 | /* Restore route, if needed. */ | |
40381db7 | 2918 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2919 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2920 | |
2921 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2922 | if ((afi == AFI_IP |
2923 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2924 | || (afi == AFI_IP6 | |
2925 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2926 | &attr_new->mp_nexthop_global))) | |
2927 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2928 | |
9bcb3eef | 2929 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2930 | /* Unintern existing, set to new. */ |
40381db7 DS |
2931 | bgp_attr_unintern(&pi->attr); |
2932 | pi->attr = attr_new; | |
083ec940 | 2933 | pi->uptime = monotime(NULL); |
d3135ba3 | 2934 | } |
a2299aba AD |
2935 | |
2936 | /* Gateway IP nexthop should be resolved */ | |
2937 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2938 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2939 | NULL, 0, NULL)) |
a2299aba AD |
2940 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2941 | else { | |
2942 | if (BGP_DEBUG(nht, NHT)) { | |
2943 | inet_ntop(pp->family, | |
2944 | &attr.evpn_overlay.gw_ip, | |
2945 | buf1, sizeof(buf1)); | |
2946 | zlog_debug("%s: gateway IP NH unresolved", | |
2947 | buf1); | |
2948 | } | |
2949 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2950 | } | |
2951 | } else { | |
2952 | ||
2953 | /* as it is an importation, change nexthop */ | |
2954 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2955 | } | |
d3135ba3 | 2956 | |
090efa2f AK |
2957 | /* Link path to evpn nexthop */ |
2958 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2959 | ||
9bcb3eef | 2960 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2961 | safi); |
b49cdf4c | 2962 | |
d3135ba3 | 2963 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2964 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2965 | |
7452e879 | 2966 | /* Process for route leaking. */ |
2967 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2968 | ||
9bcb3eef | 2969 | bgp_dest_unlock_node(dest); |
3c11d70a | 2970 | |
5f0c5ec8 | 2971 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2972 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2973 | new_pi ? "new" : "update", dest, | |
2974 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2975 | pi->flags); | |
5f0c5ec8 | 2976 | |
d3135ba3 | 2977 | return ret; |
2978 | } | |
2979 | ||
128ea8ab | 2980 | /* |
852d9f97 | 2981 | * Common handling for vni route tables install/selection. |
128ea8ab | 2982 | */ |
852d9f97 SW |
2983 | static int install_evpn_route_entry_in_vni_common( |
2984 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
2985 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
d62a17ae | 2986 | { |
40381db7 | 2987 | struct bgp_path_info *pi; |
9c7edc03 | 2988 | struct bgp_path_info *local_pi; |
d62a17ae | 2989 | struct attr *attr_new; |
2990 | int ret; | |
74efb822 AK |
2991 | bool old_local_es = false; |
2992 | bool new_local_es; | |
c44ab6f1 | 2993 | |
d62a17ae | 2994 | /* Check if route entry is already present. */ |
9bcb3eef | 2995 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2996 | if (pi->extra |
2997 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2998 | break; |
2999 | ||
bd0254af MS |
3000 | if (!pi) { |
3001 | /* Create an info */ | |
26c03e43 | 3002 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 3003 | parent_pi->attr); |
34c7f35f | 3004 | |
852d9f97 SW |
3005 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3006 | if (is_evpn_type2_dest_ipaddr_none(dest)) | |
3007 | evpn_type2_path_info_set_ip( | |
3008 | pi, p->prefix.macip_addr.ip); | |
3009 | else | |
3010 | evpn_type2_path_info_set_mac( | |
3011 | pi, p->prefix.macip_addr.mac); | |
3012 | } | |
34c7f35f | 3013 | |
74efb822 | 3014 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 3015 | } else { |
b5118501 TA |
3016 | /* Return early if attributes haven't changed |
3017 | * and dest isn't flagged for removal. | |
3018 | * dest will be unlocked by either | |
3019 | * install_evpn_route_entry_in_vni_mac() or | |
3020 | * install_evpn_route_entry_in_vni_ip() | |
3021 | */ | |
3022 | if (attrhash_cmp(pi->attr, parent_pi->attr) && | |
3023 | !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 3024 | return 0; |
d62a17ae | 3025 | /* The attribute has changed. */ |
3026 | /* Add (or update) attribute to hash. */ | |
40381db7 | 3027 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 3028 | |
50f74cf1 | 3029 | /* Restore route, if needed. */ |
40381db7 | 3030 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 3031 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 3032 | |
3033 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
3034 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
3035 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 3036 | |
74efb822 AK |
3037 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
3038 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
3039 | /* If ESI is different or if its type has changed we | |
3040 | * need to reinstall the path in zebra | |
3041 | */ | |
3042 | if ((old_local_es != new_local_es) | |
3043 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
3044 | sizeof(attr_new->esi))) { | |
3045 | ||
3046 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
3047 | zlog_debug("VNI %d path %pFX chg to %s es", | |
3048 | vpn->vni, &pi->net->p, | |
3049 | new_local_es ? "local" | |
3050 | : "non-local"); | |
3051 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
3052 | } | |
3053 | ||
50f74cf1 | 3054 | /* Unintern existing, set to new. */ |
40381db7 DS |
3055 | bgp_attr_unintern(&pi->attr); |
3056 | pi->attr = attr_new; | |
083ec940 | 3057 | pi->uptime = monotime(NULL); |
50f74cf1 | 3058 | } |
3059 | ||
021b6596 AD |
3060 | /* Add this route to remote IP hashtable */ |
3061 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
3062 | ||
50f74cf1 | 3063 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3064 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 3065 | |
9c7edc03 AK |
3066 | /* if the best path is a local path with a non-zero ES |
3067 | * sync info against the local path may need to be updated | |
3068 | * when a remote path is added/updated (including changes | |
3069 | * from sync-path to remote-path) | |
3070 | */ | |
3071 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 3072 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 3073 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 3074 | __func__); |
852d9f97 SW |
3075 | |
3076 | return ret; | |
3077 | } | |
3078 | ||
3079 | /* | |
3080 | * Common handling for vni route tables uninstall/selection. | |
3081 | */ | |
3082 | static int uninstall_evpn_route_entry_in_vni_common( | |
3083 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
3084 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
3085 | { | |
3086 | struct bgp_path_info *pi; | |
3087 | struct bgp_path_info *local_pi; | |
3088 | int ret; | |
3089 | ||
3090 | /* Find matching route entry. */ | |
3091 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
3092 | if (pi->extra && | |
3093 | (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
3094 | break; | |
3095 | ||
3096 | if (!pi) | |
3097 | return 0; | |
3098 | ||
3099 | bgp_evpn_remote_ip_hash_del(vpn, pi); | |
3100 | ||
3101 | /* Mark entry for deletion */ | |
3102 | bgp_path_info_delete(dest, pi); | |
3103 | ||
3104 | /* Perform route selection and update zebra, if required. */ | |
3105 | ret = evpn_route_select_install(bgp, vpn, dest); | |
3106 | ||
3107 | /* if the best path is a local path with a non-zero ES | |
3108 | * sync info against the local path may need to be updated | |
3109 | * when a remote path is deleted | |
3110 | */ | |
3111 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
3112 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
3113 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
3114 | __func__); | |
3115 | ||
3116 | return ret; | |
3117 | } | |
3118 | ||
3119 | /* | |
3120 | * Install route entry into VNI IP table and invoke route selection. | |
3121 | */ | |
3122 | static int install_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3123 | struct bgpevpn *vpn, | |
3124 | const struct prefix_evpn *p, | |
3125 | struct bgp_path_info *parent_pi) | |
3126 | { | |
3127 | int ret; | |
3128 | struct bgp_dest *dest; | |
3129 | ||
3130 | /* Ignore MAC Only Type-2 */ | |
3131 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3132 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3133 | return 0; | |
3134 | ||
3135 | /* Create (or fetch) route within the VNI IP table. */ | |
3136 | dest = bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
3137 | ||
3138 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3139 | parent_pi); | |
3140 | ||
3141 | bgp_dest_unlock_node(dest); | |
3142 | ||
3143 | return ret; | |
3144 | } | |
3145 | ||
3146 | /* | |
3147 | * Install route entry into VNI MAC table and invoke route selection. | |
3148 | */ | |
3149 | static int install_evpn_route_entry_in_vni_mac(struct bgp *bgp, | |
3150 | struct bgpevpn *vpn, | |
3151 | const struct prefix_evpn *p, | |
3152 | struct bgp_path_info *parent_pi) | |
3153 | { | |
3154 | int ret; | |
3155 | struct bgp_dest *dest; | |
3156 | ||
3157 | /* Only type-2 routes go into this table */ | |
3158 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3159 | return 0; | |
3160 | ||
3161 | /* Create (or fetch) route within the VNI MAC table. */ | |
3162 | dest = bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
3163 | ||
3164 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3165 | parent_pi); | |
3166 | ||
3167 | bgp_dest_unlock_node(dest); | |
3168 | ||
3169 | return ret; | |
3170 | } | |
3171 | ||
3172 | /* | |
3173 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3174 | */ | |
3175 | static int uninstall_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3176 | struct bgpevpn *vpn, | |
3177 | const struct prefix_evpn *p, | |
3178 | struct bgp_path_info *parent_pi) | |
3179 | { | |
3180 | int ret; | |
3181 | struct bgp_dest *dest; | |
3182 | ||
3183 | /* Ignore MAC Only Type-2 */ | |
3184 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3185 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3186 | return 0; | |
3187 | ||
3188 | /* Locate route within the VNI IP table. */ | |
3189 | dest = bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
3190 | if (!dest) | |
3191 | return 0; | |
3192 | ||
3193 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3194 | parent_pi); | |
3195 | ||
9bcb3eef | 3196 | bgp_dest_unlock_node(dest); |
a97a1e11 | 3197 | |
50f74cf1 | 3198 | return ret; |
3199 | } | |
3200 | ||
852d9f97 SW |
3201 | /* |
3202 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3203 | */ | |
3204 | static int | |
3205 | uninstall_evpn_route_entry_in_vni_mac(struct bgp *bgp, struct bgpevpn *vpn, | |
3206 | const struct prefix_evpn *p, | |
3207 | struct bgp_path_info *parent_pi) | |
3208 | { | |
3209 | int ret; | |
3210 | struct bgp_dest *dest; | |
3211 | ||
3212 | /* Only type-2 routes go into this table */ | |
3213 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3214 | return 0; | |
3215 | ||
3216 | /* Locate route within the VNI MAC table. */ | |
3217 | dest = bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, parent_pi); | |
3218 | if (!dest) | |
3219 | return 0; | |
3220 | ||
3221 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3222 | parent_pi); | |
3223 | ||
3224 | bgp_dest_unlock_node(dest); | |
3225 | ||
3226 | return ret; | |
3227 | } | |
d3135ba3 | 3228 | /* |
3229 | * Uninstall route entry from the VRF routing table and send message | |
3230 | * to zebra, if appropriate. | |
3231 | */ | |
3232 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 3233 | const struct prefix_evpn *evp, |
40381db7 | 3234 | struct bgp_path_info *parent_pi) |
d3135ba3 | 3235 | { |
9bcb3eef | 3236 | struct bgp_dest *dest; |
40381db7 | 3237 | struct bgp_path_info *pi; |
c4edf708 | 3238 | int ret = 0; |
d3135ba3 | 3239 | struct prefix p; |
3240 | struct prefix *pp = &p; | |
3241 | afi_t afi = 0; | |
3242 | safi_t safi = 0; | |
3243 | ||
3244 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 3245 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 3246 | |
2dbe669b | 3247 | if (bgp_debug_zebra(NULL)) |
996c9314 | 3248 | zlog_debug( |
2dbe669b DA |
3249 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
3250 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
3251 | parent_pi->flags); | |
1eb88002 | 3252 | |
d3135ba3 | 3253 | /* Locate route within the VRF. */ |
3254 | /* NOTE: There is no RD here. */ | |
3714a385 | 3255 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 3256 | afi = AFI_IP; |
3257 | safi = SAFI_UNICAST; | |
9bcb3eef | 3258 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3259 | } else { |
3260 | afi = AFI_IP6; | |
3261 | safi = SAFI_UNICAST; | |
9bcb3eef | 3262 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3263 | } |
3264 | ||
9bcb3eef | 3265 | if (!dest) |
d3135ba3 | 3266 | return 0; |
3267 | ||
3268 | /* Find matching route entry. */ | |
9bcb3eef | 3269 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3270 | if (pi->extra |
3271 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 3272 | break; |
3273 | ||
e71ad4b6 DA |
3274 | if (!pi) { |
3275 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 3276 | return 0; |
e71ad4b6 | 3277 | } |
d3135ba3 | 3278 | |
5f0c5ec8 | 3279 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
3280 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
3281 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
3282 | pi->flags); | |
5f0c5ec8 | 3283 | |
7452e879 | 3284 | /* Process for route leaking. */ |
3285 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
3286 | ||
9bcb3eef | 3287 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 3288 | safi); |
4c7a11d5 | 3289 | |
d3135ba3 | 3290 | /* Mark entry for deletion */ |
9bcb3eef | 3291 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 3292 | |
090efa2f AK |
3293 | /* Unlink path to evpn nexthop */ |
3294 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
3295 | ||
d3135ba3 | 3296 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3297 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 3298 | |
3299 | /* Unlock route node. */ | |
9bcb3eef | 3300 | bgp_dest_unlock_node(dest); |
d3135ba3 | 3301 | |
3302 | return ret; | |
3303 | } | |
3304 | ||
128ea8ab | 3305 | /* |
852d9f97 SW |
3306 | * Install route entry into the VNI routing tables. |
3307 | */ | |
3308 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, | |
3309 | const struct prefix_evpn *p, | |
3310 | struct bgp_path_info *parent_pi) | |
3311 | { | |
3312 | int ret = 0; | |
3313 | ||
3314 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) | |
3315 | zlog_debug( | |
3316 | "%s (%u): Installing EVPN %pFX route in VNI %u IP/MAC table", | |
3317 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3318 | ||
3319 | ret = install_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); | |
3320 | ||
3321 | if (ret) { | |
3322 | flog_err( | |
3323 | EC_BGP_EVPN_FAIL, | |
3324 | "%s (%u): Failed to install EVPN %pFX route in VNI %u MAC table", | |
3325 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3326 | ||
3327 | return ret; | |
3328 | } | |
3329 | ||
3330 | ret = install_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); | |
3331 | ||
3332 | if (ret) { | |
3333 | flog_err( | |
3334 | EC_BGP_EVPN_FAIL, | |
3335 | "%s (%u): Failed to install EVPN %pFX route in VNI %u IP table", | |
3336 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3337 | ||
3338 | return ret; | |
3339 | } | |
3340 | ||
3341 | return ret; | |
3342 | } | |
3343 | ||
3344 | /* | |
3345 | * Uninstall route entry from the VNI routing tables. | |
128ea8ab | 3346 | */ |
d62a17ae | 3347 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 3348 | const struct prefix_evpn *p, |
40381db7 | 3349 | struct bgp_path_info *parent_pi) |
128ea8ab | 3350 | { |
852d9f97 | 3351 | int ret = 0; |
c44ab6f1 | 3352 | |
852d9f97 SW |
3353 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) |
3354 | zlog_debug( | |
3355 | "%s (%u): Uninstalling EVPN %pFX route from VNI %u IP/MAC table", | |
3356 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3357 | |
852d9f97 | 3358 | ret = uninstall_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); |
128ea8ab | 3359 | |
852d9f97 SW |
3360 | if (ret) { |
3361 | flog_err( | |
3362 | EC_BGP_EVPN_FAIL, | |
3363 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u IP table", | |
3364 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3365 | |
852d9f97 | 3366 | return ret; |
e71ad4b6 | 3367 | } |
128ea8ab | 3368 | |
852d9f97 | 3369 | ret = uninstall_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); |
128ea8ab | 3370 | |
852d9f97 SW |
3371 | if (ret) { |
3372 | flog_err( | |
3373 | EC_BGP_EVPN_FAIL, | |
3374 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u MAC table", | |
3375 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
9c7edc03 | 3376 | |
852d9f97 SW |
3377 | return ret; |
3378 | } | |
128ea8ab | 3379 | |
d62a17ae | 3380 | return ret; |
128ea8ab | 3381 | } |
3382 | ||
5ba238b7 MK |
3383 | /* |
3384 | * Given a route entry and a VRF, see if this route entry should be | |
3385 | * imported into the VRF i.e., RTs match. | |
3386 | */ | |
4b7e6066 | 3387 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 3388 | struct bgp_path_info *pi) |
5ba238b7 | 3389 | { |
40381db7 | 3390 | struct attr *attr = pi->attr; |
5ba238b7 | 3391 | struct ecommunity *ecom; |
f6e07e1b | 3392 | uint32_t i; |
5ba238b7 MK |
3393 | |
3394 | assert(attr); | |
3395 | /* Route should have valid RT to be even considered. */ | |
3396 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3397 | return 0; | |
3398 | ||
b53e67a3 | 3399 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
3400 | if (!ecom || !ecom->size) |
3401 | return 0; | |
3402 | ||
3403 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3404 | * matches, we're done. | |
3405 | */ | |
3406 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3407 | uint8_t *pnt; |
3408 | uint8_t type, sub_type; | |
5ba238b7 MK |
3409 | struct ecommunity_val *eval; |
3410 | struct ecommunity_val eval_tmp; | |
3411 | struct vrf_irt_node *irt; | |
3412 | ||
3413 | /* Only deal with RTs */ | |
34540b0d | 3414 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 3415 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3416 | + (i * ecom->unit_size)); |
5ba238b7 MK |
3417 | type = *pnt++; |
3418 | sub_type = *pnt++; | |
3419 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3420 | continue; | |
3421 | ||
3422 | /* See if this RT matches specified VNIs import RTs */ | |
3423 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 3424 | if (irt) |
5ba238b7 MK |
3425 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3426 | return 1; | |
3427 | ||
3428 | /* Also check for non-exact match. In this, we mask out the AS | |
3429 | * and | |
3430 | * only check on the local-admin sub-field. This is to | |
3431 | * facilitate using | |
3432 | * VNI as the RT for EBGP peering too. | |
3433 | */ | |
3434 | irt = NULL; | |
3435 | if (type == ECOMMUNITY_ENCODE_AS | |
3436 | || type == ECOMMUNITY_ENCODE_AS4 | |
3437 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3438 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
3439 | mask_ecom_global_admin(&eval_tmp, eval); |
3440 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3441 | } | |
5d9cbca2 | 3442 | if (irt) |
5ba238b7 MK |
3443 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3444 | return 1; | |
3445 | } | |
3446 | ||
3447 | return 0; | |
3448 | } | |
3449 | ||
128ea8ab | 3450 | /* |
3451 | * Given a route entry and a VNI, see if this route entry should be | |
3452 | * imported into the VNI i.e., RTs match. | |
3453 | */ | |
d62a17ae | 3454 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3455 | struct bgp_path_info *pi) |
d62a17ae | 3456 | { |
40381db7 | 3457 | struct attr *attr = pi->attr; |
d62a17ae | 3458 | struct ecommunity *ecom; |
f6e07e1b | 3459 | uint32_t i; |
d62a17ae | 3460 | |
3461 | assert(attr); | |
3462 | /* Route should have valid RT to be even considered. */ | |
3463 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3464 | return 0; | |
3465 | ||
b53e67a3 | 3466 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3467 | if (!ecom || !ecom->size) |
3468 | return 0; | |
3469 | ||
3470 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3471 | * matches, we're done. | |
3472 | */ | |
3473 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3474 | uint8_t *pnt; |
3475 | uint8_t type, sub_type; | |
d62a17ae | 3476 | struct ecommunity_val *eval; |
3477 | struct ecommunity_val eval_tmp; | |
3478 | struct irt_node *irt; | |
3479 | ||
3480 | /* Only deal with RTs */ | |
34540b0d | 3481 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3482 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3483 | + (i * ecom->unit_size)); |
d62a17ae | 3484 | type = *pnt++; |
3485 | sub_type = *pnt++; | |
3486 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3487 | continue; | |
3488 | ||
3489 | /* See if this RT matches specified VNIs import RTs */ | |
3490 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3491 | if (irt) |
d62a17ae | 3492 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3493 | return 1; | |
3494 | ||
3495 | /* Also check for non-exact match. In this, we mask out the AS | |
3496 | * and | |
3497 | * only check on the local-admin sub-field. This is to | |
3498 | * facilitate using | |
3499 | * VNI as the RT for EBGP peering too. | |
3500 | */ | |
3501 | irt = NULL; | |
3502 | if (type == ECOMMUNITY_ENCODE_AS | |
3503 | || type == ECOMMUNITY_ENCODE_AS4 | |
3504 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3505 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 3506 | mask_ecom_global_admin(&eval_tmp, eval); |
3507 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3508 | } | |
b1ab0dfe | 3509 | if (irt) |
d62a17ae | 3510 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3511 | return 1; | |
3512 | } | |
3513 | ||
3514 | return 0; | |
128ea8ab | 3515 | } |
3516 | ||
47bf0432 CS |
3517 | /* This API will scan evpn routes for checking attribute's rmac |
3518 | * macthes with bgp instance router mac. It avoid installing | |
3519 | * route into bgp vrf table and remote rmac in bridge table. | |
3520 | */ | |
3521 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3522 | const struct prefix_evpn *evp, |
47bf0432 CS |
3523 | struct bgp_path_info *pi) |
3524 | { | |
3525 | /* evpn route could have learnt prior to L3vni has come up, | |
3526 | * perform rmac check before installing route and | |
3527 | * remote router mac. | |
3528 | * The route will be removed from global bgp table once | |
3529 | * SVI comes up with MAC and stored in hash, triggers | |
3530 | * bgp_mac_rescan_all_evpn_tables. | |
3531 | */ | |
05864da7 | 3532 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 3533 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
3534 | char attr_str[BUFSIZ] = {0}; |
3535 | ||
5022c833 | 3536 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 3537 | |
2dbe669b DA |
3538 | zlog_debug( |
3539 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
3540 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
3541 | } |
3542 | ||
3543 | return 1; | |
3544 | } | |
3545 | ||
3546 | return 0; | |
3547 | } | |
3548 | ||
bbc57c6c AK |
3549 | /* don't import hosts that are locally attached */ |
3550 | static inline bool | |
36dd4574 AK |
3551 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
3552 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
3553 | struct bgp_path_info *pi, int install) |
3554 | { | |
26c03e43 | 3555 | esi_t *esi; |
bbc57c6c | 3556 | |
26c03e43 AK |
3557 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3558 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
3559 | ||
3560 | /* Don't import routes that point to a local destination */ | |
3561 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
3562 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
3563 | char esi_buf[ESI_STR_LEN]; | |
3564 | ||
3565 | zlog_debug( | |
3566 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
3567 | install ? "import" : "unimport", evp, | |
3568 | esi_to_str(esi, esi_buf, | |
3569 | sizeof(esi_buf))); | |
3570 | } | |
3571 | return true; | |
3572 | } | |
58bff4d1 AK |
3573 | } |
3574 | return false; | |
3575 | } | |
26c03e43 | 3576 | |
58bff4d1 AK |
3577 | /* |
3578 | * Install or uninstall a mac-ip route in the provided vrf if | |
3579 | * there is a rt match | |
3580 | */ | |
3581 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3582 | struct bgp_path_info *pi, | |
3583 | int install) | |
3584 | { | |
3585 | int ret = 0; | |
3586 | const struct prefix_evpn *evp = | |
3587 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3588 | ||
3589 | /* Consider "valid" remote routes applicable for | |
3590 | * this VRF. | |
3591 | */ | |
3592 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3593 | && pi->type == ZEBRA_ROUTE_BGP | |
3594 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3595 | return 0; | |
3596 | ||
58bff4d1 AK |
3597 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3598 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3599 | return 0; | |
3600 | ||
74efb822 | 3601 | /* don't import hosts that are locally attached */ |
e57e63eb | 3602 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3603 | bgp_vrf, evp, pi, install)) | |
3604 | return 0; | |
3605 | ||
3606 | if (install) | |
58bff4d1 | 3607 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3608 | else |
58bff4d1 AK |
3609 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3610 | pi); | |
26c03e43 | 3611 | |
58bff4d1 AK |
3612 | if (ret) |
3613 | flog_err(EC_BGP_EVPN_FAIL, | |
3614 | "Failed to %s EVPN %pFX route in VRF %s", | |
3615 | install ? "install" : "uninstall", evp, | |
3616 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3617 | } |
58bff4d1 AK |
3618 | |
3619 | return ret; | |
bbc57c6c AK |
3620 | } |
3621 | ||
5ba238b7 MK |
3622 | /* |
3623 | * Install or uninstall mac-ip routes are appropriate for this | |
3624 | * particular VRF. | |
3625 | */ | |
996c9314 | 3626 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3627 | { |
3628 | afi_t afi; | |
3629 | safi_t safi; | |
9bcb3eef | 3630 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3631 | struct bgp_table *table; |
40381db7 | 3632 | struct bgp_path_info *pi; |
5ba238b7 | 3633 | int ret; |
5e53dce3 | 3634 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3635 | |
3636 | afi = AFI_L2VPN; | |
3637 | safi = SAFI_EVPN; | |
5e53dce3 T |
3638 | bgp_evpn = bgp_get_evpn(); |
3639 | if (!bgp_evpn) | |
5ba238b7 MK |
3640 | return -1; |
3641 | ||
3642 | /* Walk entire global routing table and evaluate routes which could be | |
3643 | * imported into this VRF. Note that we need to loop through all global | |
3644 | * routes to determine which route matches the import rt on vrf | |
3645 | */ | |
9bcb3eef DS |
3646 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3647 | rd_dest = bgp_route_next(rd_dest)) { | |
3648 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3649 | if (!table) |
3650 | continue; | |
3651 | ||
9bcb3eef DS |
3652 | for (dest = bgp_table_top(table); dest; |
3653 | dest = bgp_route_next(dest)) { | |
3654 | const struct prefix_evpn *evp = | |
3655 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3656 | dest); | |
5ba238b7 | 3657 | |
1eb88002 | 3658 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3659 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3660 | || evp->prefix.route_type | |
3661 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3662 | continue; |
3663 | ||
1eb88002 | 3664 | /* if not a mac+ip route skip this route */ |
3714a385 | 3665 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3666 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3667 | continue; |
3668 | ||
9bcb3eef | 3669 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3670 | pi = pi->next) { |
58bff4d1 AK |
3671 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3672 | bgp_vrf, pi, install); | |
3673 | if (ret) | |
3674 | return ret; | |
5ba238b7 MK |
3675 | } |
3676 | } | |
3677 | } | |
3678 | ||
3679 | return 0; | |
3680 | } | |
3681 | ||
128ea8ab | 3682 | /* |
3683 | * Install or uninstall routes of specified type that are appropriate for this | |
3684 | * particular VNI. | |
3685 | */ | |
d62a17ae | 3686 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3687 | struct bgpevpn *vpn, | |
3688 | bgp_evpn_route_type rtype, | |
3689 | int install) | |
3690 | { | |
0291c246 MK |
3691 | afi_t afi; |
3692 | safi_t safi; | |
9bcb3eef | 3693 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3694 | struct bgp_table *table; |
40381db7 | 3695 | struct bgp_path_info *pi; |
0291c246 | 3696 | int ret; |
d62a17ae | 3697 | |
3698 | afi = AFI_L2VPN; | |
3699 | safi = SAFI_EVPN; | |
3700 | ||
3701 | /* Walk entire global routing table and evaluate routes which could be | |
3702 | * imported into this VPN. Note that we cannot just look at the routes | |
3703 | * for | |
3704 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3705 | * RD. | |
3706 | */ | |
3707 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3708 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3709 | rd_dest = bgp_route_next(rd_dest)) { | |
3710 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3711 | if (!table) |
3712 | continue; | |
3713 | ||
9bcb3eef DS |
3714 | for (dest = bgp_table_top(table); dest; |
3715 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3716 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3717 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3718 | dest); | |
d62a17ae | 3719 | |
3720 | if (evp->prefix.route_type != rtype) | |
3721 | continue; | |
3722 | ||
9bcb3eef | 3723 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3724 | pi = pi->next) { |
d62a17ae | 3725 | /* Consider "valid" remote routes applicable for |
3726 | * this VNI. */ | |
40381db7 DS |
3727 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3728 | && pi->type == ZEBRA_ROUTE_BGP | |
3729 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3730 | continue; |
3731 | ||
40381db7 | 3732 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3733 | if (install) |
3734 | ret = install_evpn_route_entry( | |
40381db7 | 3735 | bgp, vpn, evp, pi); |
d62a17ae | 3736 | else |
3737 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3738 | bgp, vpn, evp, pi); |
d62a17ae | 3739 | |
3740 | if (ret) { | |
af4c2728 | 3741 | flog_err( |
e50f7cfd | 3742 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3743 | "%u: Failed to %s EVPN %s route in VNI %u", |
3744 | bgp->vrf_id, | |
3745 | install ? "install" | |
3746 | : "uninstall", | |
3747 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3748 | ? "MACIP" | |
3749 | : "IMET", | |
3750 | vpn->vni); | |
dc52bece DS |
3751 | |
3752 | bgp_dest_unlock_node(rd_dest); | |
3753 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3754 | return ret; |
3755 | } | |
3756 | } | |
3757 | } | |
3758 | } | |
3759 | } | |
3760 | ||
3761 | return 0; | |
128ea8ab | 3762 | } |
3763 | ||
5ba238b7 | 3764 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3765 | * is invoked upon l3vni-add or l3vni import rt change |
3766 | */ | |
5ba238b7 MK |
3767 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3768 | { | |
3769 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3770 | return 0; | |
3771 | } | |
3772 | ||
128ea8ab | 3773 | /* |
3774 | * Install any existing remote routes applicable for this VNI into its | |
3775 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3776 | * RT is changed. | |
3777 | */ | |
d62a17ae | 3778 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3779 | { |
d62a17ae | 3780 | int ret; |
128ea8ab | 3781 | |
d62a17ae | 3782 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3783 | * for this VNI. | |
3784 | */ | |
3785 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3786 | 1); | |
3787 | if (ret) | |
3788 | return ret; | |
128ea8ab | 3789 | |
c44ab6f1 AK |
3790 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3791 | 1); | |
3792 | if (ret) | |
3793 | return ret; | |
3794 | ||
d62a17ae | 3795 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3796 | 1); | |
128ea8ab | 3797 | } |
3798 | ||
5ba238b7 MK |
3799 | /* uninstall routes from l3vni vrf. */ |
3800 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3801 | { | |
3802 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3803 | return 0; | |
3804 | } | |
3805 | ||
90e60aa7 | 3806 | /* |
3807 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3808 | * this is invoked is upon an import RT change. | |
3809 | */ | |
d62a17ae | 3810 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3811 | { |
d62a17ae | 3812 | int ret; |
90e60aa7 | 3813 | |
d62a17ae | 3814 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3815 | * applicable | |
3816 | * for this VNI. | |
3817 | */ | |
3818 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3819 | 0); | |
3820 | if (ret) | |
3821 | return ret; | |
90e60aa7 | 3822 | |
c44ab6f1 | 3823 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3824 | 0); |
c44ab6f1 AK |
3825 | if (ret) |
3826 | return ret; | |
3827 | ||
3828 | ||
d62a17ae | 3829 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3830 | 0); | |
90e60aa7 | 3831 | } |
3832 | ||
d3135ba3 | 3833 | /* |
3834 | * Install or uninstall route in matching VRFs (list). | |
3835 | */ | |
3836 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3837 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3838 | struct bgp_path_info *pi, |
d3135ba3 | 3839 | struct list *vrfs, int install) |
3840 | { | |
d3135ba3 | 3841 | struct bgp *bgp_vrf; |
3842 | struct listnode *node, *nnode; | |
3843 | ||
90264d64 | 3844 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3845 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3846 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3847 | return 0; |
3848 | ||
90264d64 | 3849 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3850 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3851 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3852 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3853 | return 0; |
3854 | ||
d3135ba3 | 3855 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3856 | int ret; | |
3857 | ||
36dd4574 | 3858 | /* don't import hosts that are locally attached */ |
e57e63eb | 3859 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3860 | bgp_vrf, evp, pi, install)) | |
3861 | return 0; | |
3862 | ||
3863 | if (install) | |
40381db7 | 3864 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3865 | else |
996c9314 | 3866 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3867 | pi); |
d3135ba3 | 3868 | |
3869 | if (ret) { | |
e50f7cfd | 3870 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3871 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3872 | bgp_def->vrf_id, |
2dbe669b | 3873 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3874 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3875 | return ret; |
3876 | } | |
3877 | } | |
3878 | ||
3879 | return 0; | |
3880 | } | |
3881 | ||
128ea8ab | 3882 | /* |
3883 | * Install or uninstall route in matching VNIs (list). | |
3884 | */ | |
d62a17ae | 3885 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3886 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3887 | struct bgp_path_info *pi, |
d62a17ae | 3888 | struct list *vnis, int install) |
128ea8ab | 3889 | { |
d62a17ae | 3890 | struct bgpevpn *vpn; |
3891 | struct listnode *node, *nnode; | |
128ea8ab | 3892 | |
d62a17ae | 3893 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3894 | int ret; | |
128ea8ab | 3895 | |
d62a17ae | 3896 | if (!is_vni_live(vpn)) |
3897 | continue; | |
128ea8ab | 3898 | |
d62a17ae | 3899 | if (install) |
40381db7 | 3900 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3901 | else |
40381db7 | 3902 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3903 | |
d62a17ae | 3904 | if (ret) { |
1c50c1c0 QY |
3905 | flog_err(EC_BGP_EVPN_FAIL, |
3906 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3907 | bgp->vrf_id, install ? "install" : "uninstall", | |
3908 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3909 | ? "MACIP" | |
3910 | : "IMET", | |
3911 | vpn->vni); | |
d62a17ae | 3912 | return ret; |
3913 | } | |
3914 | } | |
128ea8ab | 3915 | |
d62a17ae | 3916 | return 0; |
128ea8ab | 3917 | } |
3918 | ||
3919 | /* | |
50f74cf1 | 3920 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3921 | */ |
26c03e43 AK |
3922 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3923 | safi_t safi, const struct prefix *p, | |
3924 | struct bgp_path_info *pi, | |
3925 | int import, bool in_vni_rt, | |
3926 | bool in_vrf_rt) | |
d62a17ae | 3927 | { |
3928 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3929 | struct attr *attr = pi->attr; |
d62a17ae | 3930 | struct ecommunity *ecom; |
f6e07e1b | 3931 | uint32_t i; |
c44ab6f1 | 3932 | struct prefix_evpn ad_evp; |
d62a17ae | 3933 | |
3934 | assert(attr); | |
3935 | ||
fff7545a | 3936 | /* Only type-1, type-2, type-3, type-4 and type-5 |
3937 | * are supported currently | |
3938 | */ | |
d62a17ae | 3939 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3940 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3941 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3942 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3943 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3944 | return 0; |
3945 | ||
3946 | /* If we don't have Route Target, nothing much to do. */ | |
3947 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3948 | return 0; | |
3949 | ||
c44ab6f1 AK |
3950 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3951 | * we need to create a different copy for the VNI | |
3952 | */ | |
3953 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
852d9f97 SW |
3954 | evp = evpn_type1_prefix_vni_ip_copy(&ad_evp, evp, |
3955 | attr->nexthop); | |
c44ab6f1 | 3956 | |
b53e67a3 | 3957 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3958 | if (!ecom || !ecom->size) |
3959 | return -1; | |
3960 | ||
50f74cf1 | 3961 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3962 | * attached to the route */ | |
d62a17ae | 3963 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3964 | uint8_t *pnt; |
3965 | uint8_t type, sub_type; | |
d62a17ae | 3966 | struct ecommunity_val *eval; |
3967 | struct ecommunity_val eval_tmp; | |
996c9314 | 3968 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3969 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3970 | struct bgp_evpn_es *es; |
d62a17ae | 3971 | |
3972 | /* Only deal with RTs */ | |
34540b0d | 3973 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3974 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3975 | + (i * ecom->unit_size)); |
d62a17ae | 3976 | type = *pnt++; |
3977 | sub_type = *pnt++; | |
3978 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3979 | continue; | |
3980 | ||
58bff4d1 AK |
3981 | /* non-local MAC-IP routes in the global route table are linked |
3982 | * to the destination ES | |
3983 | */ | |
3984 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3985 | bgp_evpn_path_es_link(pi, 0, | |
3986 | bgp_evpn_attr_get_esi(pi->attr)); | |
3987 | ||
50f74cf1 | 3988 | /* |
3989 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3990 | * IMET route is imported into VNI table. | |
3991 | * prefix routes are imported into VRF table. | |
523cafc4 | 3992 | */ |
50f74cf1 | 3993 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3994 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3995 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3996 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3997 | |
26c03e43 | 3998 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3999 | if (irt) |
40381db7 DS |
4000 | install_uninstall_route_in_vnis( |
4001 | bgp, afi, safi, evp, pi, irt->vnis, | |
4002 | import); | |
50f74cf1 | 4003 | |
26c03e43 | 4004 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 4005 | if (vrf_irt) |
40381db7 DS |
4006 | install_uninstall_route_in_vrfs( |
4007 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
4008 | import); | |
50f74cf1 | 4009 | |
4010 | /* Also check for non-exact match. | |
4011 | * In this, we mask out the AS and | |
4012 | * only check on the local-admin sub-field. | |
4013 | * This is to facilitate using | |
4014 | * VNI as the RT for EBGP peering too. | |
4015 | */ | |
4016 | irt = NULL; | |
4017 | vrf_irt = NULL; | |
4018 | if (type == ECOMMUNITY_ENCODE_AS | |
4019 | || type == ECOMMUNITY_ENCODE_AS4 | |
4020 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 4021 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 4022 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
4023 | if (in_vni_rt) |
4024 | irt = lookup_import_rt(bgp, &eval_tmp); | |
4025 | if (in_vrf_rt) | |
4026 | vrf_irt = | |
4027 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 4028 | } |
4029 | ||
4030 | if (irt) | |
40381db7 DS |
4031 | install_uninstall_route_in_vnis( |
4032 | bgp, afi, safi, evp, pi, irt->vnis, | |
4033 | import); | |
50f74cf1 | 4034 | if (vrf_irt) |
40381db7 DS |
4035 | install_uninstall_route_in_vrfs( |
4036 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
4037 | import); | |
50f74cf1 | 4038 | } |
4039 | ||
4040 | /* es route is imported into the es table */ | |
4041 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
4042 | ||
4043 | /* we will match based on the entire esi to avoid | |
fff7545a | 4044 | * import of an es route for esi2 into esi1 |
50f74cf1 | 4045 | */ |
c44ab6f1 | 4046 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 4047 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 4048 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 4049 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 4050 | } |
d62a17ae | 4051 | } |
4052 | ||
4053 | return 0; | |
128ea8ab | 4054 | } |
4055 | ||
26c03e43 AK |
4056 | /* |
4057 | * Install or uninstall route for appropriate VNIs/ESIs. | |
4058 | */ | |
4059 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
4060 | const struct prefix *p, | |
4061 | struct bgp_path_info *pi, int import) | |
4062 | { | |
4063 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
4064 | true, true); | |
4065 | } | |
4066 | ||
74efb822 AK |
4067 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
4068 | { | |
4069 | struct bgp *bgp_evpn; | |
4070 | ||
4071 | bgp_evpn = bgp_get_evpn(); | |
4072 | if (!bgp_evpn) | |
4073 | return; | |
4074 | ||
4075 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
4076 | &pi->net->p, pi, import); | |
4077 | } | |
4078 | ||
2bb9eff4 DS |
4079 | /* |
4080 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
4081 | * routes | |
4082 | */ | |
80b140af MK |
4083 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
4084 | { | |
5fd9c12b KA |
4085 | /* Delete ipv4 default route and withdraw from peers */ |
4086 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4087 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4088 | SAFI_UNICAST, false); | |
4089 | ||
80b140af | 4090 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
4091 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4092 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4093 | |
5fd9c12b KA |
4094 | /* Delete ipv6 default route and withdraw from peers */ |
4095 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4096 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4097 | SAFI_UNICAST, false); | |
4098 | ||
80b140af | 4099 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
4100 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4101 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
4102 | } |
4103 | ||
2bb9eff4 DS |
4104 | /* |
4105 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
4106 | * routes | |
4107 | */ | |
5394a276 | 4108 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 4109 | { |
5394a276 CS |
4110 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
4111 | ||
4112 | bgp_evpn = bgp_get_evpn(); | |
4113 | if (!bgp_evpn) | |
4114 | return; | |
4115 | ||
80b140af | 4116 | /* update all ipv4 routes */ |
fdf19f06 MK |
4117 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4118 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4119 | |
5fd9c12b KA |
4120 | /* update ipv4 default route and withdraw from peers */ |
4121 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4122 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4123 | SAFI_UNICAST, true); | |
4124 | ||
80b140af | 4125 | /* update all ipv6 routes */ |
fdf19f06 MK |
4126 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4127 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
4128 | |
4129 | /* update ipv6 default route and withdraw from peers */ | |
4130 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4131 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4132 | SAFI_UNICAST, true); | |
4133 | ||
80b140af MK |
4134 | } |
4135 | ||
676f83b9 | 4136 | /* |
4137 | * update and advertise local routes for a VRF as type-5 routes. | |
4138 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
4139 | * done in the global route table using the routes which already exist in the | |
4140 | * VRF routing table | |
4141 | */ | |
80b140af | 4142 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4143 | { |
80b140af MK |
4144 | /* skip if the RD is configured */ |
4145 | if (is_vrf_rd_configured(bgp_vrf)) | |
4146 | return; | |
4147 | ||
4148 | /* derive the RD for the VRF based on new router-id */ | |
4149 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
4150 | ||
4151 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
4152 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 4153 | } |
4154 | ||
4155 | /* | |
4156 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
4157 | * This is invoked upon VRF RD change. The processing is done only from global | |
4158 | * table. | |
4159 | */ | |
80b140af | 4160 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4161 | { |
80b140af MK |
4162 | /* skip if the RD is configured */ |
4163 | if (is_vrf_rd_configured(bgp_vrf)) | |
4164 | return; | |
4165 | ||
4166 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
4167 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 4168 | } |
4169 | ||
852d9f97 SW |
4170 | static void update_advertise_vni_route(struct bgp *bgp, struct bgpevpn *vpn, |
4171 | struct bgp_dest *dest) | |
4172 | { | |
4173 | struct bgp_dest *global_dest; | |
4174 | struct bgp_path_info *pi, *global_pi; | |
4175 | struct attr *attr; | |
4176 | afi_t afi = AFI_L2VPN; | |
4177 | safi_t safi = SAFI_EVPN; | |
4178 | ||
4179 | struct prefix_evpn tmp_evp; | |
4180 | const struct prefix_evpn *evp = | |
4181 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
4182 | ||
4183 | /* | |
4184 | * We have already processed type-3 routes. | |
4185 | * Process only type-1 and type-2 routes here. | |
4186 | */ | |
4187 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE && | |
4188 | evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
4189 | return; | |
4190 | ||
4191 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
4192 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP && | |
4193 | pi->sub_type == BGP_ROUTE_STATIC) | |
4194 | break; | |
4195 | if (!pi) | |
4196 | return; | |
4197 | ||
4198 | /* | |
4199 | * VNI table MAC-IP prefixes don't have MAC so make sure it's | |
4200 | * set from path info here. | |
4201 | */ | |
4202 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4203 | if (is_evpn_prefix_ipaddr_none(evp)) { | |
4204 | /* VNI MAC -> Global */ | |
4205 | evpn_type2_prefix_global_copy( | |
4206 | &tmp_evp, evp, NULL /* mac */, | |
4207 | evpn_type2_path_info_get_ip(pi)); | |
4208 | } else { | |
4209 | /* VNI IP -> Global */ | |
4210 | evpn_type2_prefix_global_copy( | |
4211 | &tmp_evp, evp, evpn_type2_path_info_get_mac(pi), | |
4212 | NULL /* ip */); | |
4213 | } | |
4214 | } else { | |
4215 | memcpy(&tmp_evp, evp, sizeof(tmp_evp)); | |
4216 | } | |
4217 | ||
4218 | /* Create route in global routing table using this route entry's | |
4219 | * attribute. | |
4220 | */ | |
4221 | attr = pi->attr; | |
4222 | global_dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, | |
4223 | &tmp_evp, &vpn->prd, NULL); | |
4224 | assert(global_dest); | |
4225 | ||
4226 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4227 | /* Type-2 route */ | |
4228 | update_evpn_route_entry( | |
4229 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
4230 | NULL /* ip */, 1, &global_pi, 0, | |
4231 | mac_mobility_seqnum(attr), false /* setup_sync */, | |
4232 | NULL /* old_is_sync */); | |
4233 | } else { | |
4234 | /* Type-1 route */ | |
4235 | struct bgp_evpn_es *es; | |
4236 | int route_changed = 0; | |
4237 | ||
4238 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
4239 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, global_dest, | |
4240 | attr, &global_pi, &route_changed); | |
4241 | } | |
4242 | ||
4243 | /* Schedule for processing and unlock node. */ | |
4244 | bgp_process(bgp, global_dest, afi, safi); | |
4245 | bgp_dest_unlock_node(global_dest); | |
4246 | } | |
4247 | ||
90e60aa7 | 4248 | /* |
4249 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
4250 | * change. Note that the processing is done only on the global route table | |
4251 | * using routes that already exist in the per-VNI table. | |
4252 | */ | |
852d9f97 | 4253 | static void update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 4254 | { |
4255 | struct prefix_evpn p; | |
9bcb3eef | 4256 | struct bgp_dest *dest, *global_dest; |
852d9f97 | 4257 | struct bgp_path_info *pi; |
d62a17ae | 4258 | struct attr *attr; |
4259 | afi_t afi = AFI_L2VPN; | |
4260 | safi_t safi = SAFI_EVPN; | |
4261 | ||
4262 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
4263 | * attributes to create and advertise the type-3 route for this VNI | |
4264 | * in the global table. | |
fd069644 DS |
4265 | * |
4266 | * RT-3 only if doing head-end replication | |
d62a17ae | 4267 | */ |
833b8a50 AK |
4268 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
4269 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 4270 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
852d9f97 | 4271 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
9bcb3eef | 4272 | if (!dest) /* unexpected */ |
852d9f97 | 4273 | return; |
9bcb3eef | 4274 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
4275 | if (pi->peer == bgp->peer_self && |
4276 | pi->type == ZEBRA_ROUTE_BGP | |
4277 | && pi->sub_type == BGP_ROUTE_STATIC) | |
4278 | break; | |
fd43ffd9 DA |
4279 | if (!pi) { |
4280 | bgp_dest_unlock_node(dest); | |
852d9f97 | 4281 | return; |
fd43ffd9 | 4282 | } |
852d9f97 | 4283 | |
fd069644 | 4284 | attr = pi->attr; |
d62a17ae | 4285 | |
34c7f35f SW |
4286 | global_dest = bgp_evpn_global_node_get( |
4287 | bgp->rib[afi][safi], afi, safi, &p, &vpn->prd, NULL); | |
4288 | update_evpn_route_entry( | |
4289 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
852d9f97 | 4290 | NULL /* ip */, 1, &pi, 0, mac_mobility_seqnum(attr), |
34c7f35f | 4291 | false /* setup_sync */, NULL /* old_is_sync */); |
d62a17ae | 4292 | |
fd069644 | 4293 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
4294 | bgp_process(bgp, global_dest, afi, safi); |
4295 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 4296 | } |
d62a17ae | 4297 | |
852d9f97 SW |
4298 | /* Now, walk this VNI's MAC & IP route table and use the route and its |
4299 | * attribute to create and schedule route in global table. | |
d62a17ae | 4300 | */ |
852d9f97 SW |
4301 | for (dest = bgp_table_top(vpn->mac_table); dest; |
4302 | dest = bgp_route_next(dest)) | |
4303 | update_advertise_vni_route(bgp, vpn, dest); | |
d62a17ae | 4304 | |
852d9f97 SW |
4305 | for (dest = bgp_table_top(vpn->ip_table); dest; |
4306 | dest = bgp_route_next(dest)) | |
4307 | update_advertise_vni_route(bgp, vpn, dest); | |
90e60aa7 | 4308 | } |
4309 | ||
4310 | /* | |
4311 | * Delete (and withdraw) local routes for a VNI - only from the global | |
4312 | * table. Invoked upon router-id change. | |
4313 | */ | |
d62a17ae | 4314 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4315 | { |
d62a17ae | 4316 | struct prefix_evpn p; |
9bcb3eef | 4317 | struct bgp_dest *global_dest; |
40381db7 | 4318 | struct bgp_path_info *pi; |
d62a17ae | 4319 | afi_t afi = AFI_L2VPN; |
4320 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 4321 | |
d62a17ae | 4322 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
4323 | * for this VNI - from the global table. | |
4324 | */ | |
17151ae9 | 4325 | delete_global_type2_routes(bgp, vpn); |
90e60aa7 | 4326 | |
d62a17ae | 4327 | /* Remove type-3 route for this VNI from global table. */ |
4328 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
34c7f35f SW |
4329 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
4330 | safi, &p, &vpn->prd, NULL); | |
9bcb3eef | 4331 | if (global_dest) { |
d62a17ae | 4332 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 4333 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 4334 | |
d62a17ae | 4335 | /* Schedule for processing - withdraws to peers happen from |
4336 | * this table. | |
4337 | */ | |
40381db7 | 4338 | if (pi) |
9bcb3eef DS |
4339 | bgp_process(bgp, global_dest, afi, safi); |
4340 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 4341 | } |
90e60aa7 | 4342 | |
d60f63f0 AD |
4343 | |
4344 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 4345 | return 0; |
90e60aa7 | 4346 | } |
4347 | ||
2d48ee25 | 4348 | /* |
4349 | * Handle router-id change. Update and advertise local routes corresponding | |
4350 | * to this VNI from peers. Note that this is invoked after updating the | |
4351 | * router-id. The routes in the per-VNI table are used to create routes in | |
4352 | * the global table and schedule them. | |
4353 | */ | |
e3b78da8 | 4354 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4355 | { |
e3b78da8 | 4356 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4357 | |
d62a17ae | 4358 | /* Skip VNIs with configured RD. */ |
4359 | if (is_rd_configured(vpn)) | |
4360 | return; | |
2d48ee25 | 4361 | |
d62a17ae | 4362 | bgp_evpn_derive_auto_rd(bgp, vpn); |
4363 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 4364 | } |
4365 | ||
4366 | /* | |
4367 | * Handle router-id change. Delete and withdraw local routes corresponding | |
4368 | * to this VNI from peers. Note that this is invoked prior to updating | |
4369 | * the router-id and is done only on the global route table, the routes | |
4370 | * are needed in the per-VNI table to re-advertise with new router id. | |
4371 | */ | |
e3b78da8 | 4372 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4373 | { |
e3b78da8 | 4374 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4375 | |
d62a17ae | 4376 | /* Skip VNIs with configured RD. */ |
4377 | if (is_rd_configured(vpn)) | |
4378 | return; | |
2d48ee25 | 4379 | |
d62a17ae | 4380 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 4381 | } |
4382 | ||
fd069644 DS |
4383 | /* |
4384 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
4385 | * This is invoked upon flooding mode changing to head-end replication. | |
4386 | */ | |
e3b78da8 | 4387 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4388 | { |
e3b78da8 | 4389 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4390 | struct bgp *bgp = data; |
4391 | struct prefix_evpn p; | |
4392 | ||
833b8a50 AK |
4393 | if (!vpn || !is_vni_live(vpn) || |
4394 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
4395 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
4396 | return; |
4397 | ||
4398 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 4399 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
4400 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
4401 | "Type3 route creation failure for VNI %u", vpn->vni); | |
4402 | } | |
4403 | ||
4404 | /* | |
4405 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
4406 | * This is invoked upon flooding mode changing to drop BUM packets. | |
4407 | */ | |
e3b78da8 | 4408 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4409 | { |
e3b78da8 | 4410 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4411 | struct bgp *bgp = data; |
4412 | struct prefix_evpn p; | |
4413 | ||
4414 | if (!vpn || !is_vni_live(vpn)) | |
4415 | return; | |
4416 | ||
4417 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4418 | delete_evpn_route(bgp, vpn, &p); | |
4419 | } | |
4420 | ||
128ea8ab | 4421 | /* |
4422 | * Process received EVPN type-2 route (advertise or withdraw). | |
4423 | */ | |
d62a17ae | 4424 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4425 | struct attr *attr, uint8_t *pfx, int psize, |
4426 | uint32_t addpath_id) | |
d62a17ae | 4427 | { |
4428 | struct prefix_rd prd; | |
e121d831 QY |
4429 | struct prefix_evpn p = {}; |
4430 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
4431 | uint8_t ipaddr_len; |
4432 | uint8_t macaddr_len; | |
e121d831 QY |
4433 | /* holds the VNI(s) as in packet */ |
4434 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 4435 | uint32_t num_labels = 0; |
554cd77a | 4436 | uint32_t eth_tag; |
367b458c | 4437 | int ret = 0; |
d62a17ae | 4438 | |
4439 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
4440 | * additional 3 bytes if there is a second label (VNI): | |
4441 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
4442 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
4443 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
4444 | */ | |
4445 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
4446 | && psize != 40 && psize != 52) { | |
e50f7cfd | 4447 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4448 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
4449 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4450 | return -1; |
4451 | } | |
4452 | ||
e121d831 QY |
4453 | struct stream *pkt = stream_new(psize); |
4454 | stream_put(pkt, pfx, psize); | |
554cd77a | 4455 | |
d62a17ae | 4456 | /* Make prefix_rd */ |
4457 | prd.family = AF_UNSPEC; | |
4458 | prd.prefixlen = 64; | |
e121d831 QY |
4459 | |
4460 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 4461 | |
4462 | /* Make EVPN prefix. */ | |
b03b8898 | 4463 | p.family = AF_EVPN; |
50f74cf1 | 4464 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4465 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
4466 | ||
554cd77a | 4467 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 4468 | if (attr) { |
e121d831 QY |
4469 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
4470 | ||
74efb822 | 4471 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
4472 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
4473 | else | |
4474 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
4475 | } else { |
4476 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 4477 | } |
d62a17ae | 4478 | |
554cd77a | 4479 | /* Copy Ethernet Tag */ |
e121d831 | 4480 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 4481 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4482 | |
4483 | /* Get the MAC Addr len */ | |
e121d831 | 4484 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 4485 | |
4486 | /* Get the MAC Addr */ | |
28328ea9 | 4487 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 4488 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 4489 | } else { |
af4c2728 | 4490 | flog_err( |
e50f7cfd | 4491 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4492 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
4493 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 4494 | goto fail; |
d62a17ae | 4495 | } |
4496 | ||
4497 | ||
4498 | /* Get the IP. */ | |
e121d831 QY |
4499 | STREAM_GETC(pkt, ipaddr_len); |
4500 | ||
d62a17ae | 4501 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
4502 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 4503 | flog_err( |
e50f7cfd | 4504 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4505 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
4506 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 4507 | goto fail; |
d62a17ae | 4508 | } |
4509 | ||
4510 | if (ipaddr_len) { | |
4511 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4512 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4513 | ? IPADDR_V4 |
4514 | : IPADDR_V6; | |
e121d831 | 4515 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 4516 | } |
d62a17ae | 4517 | |
b57ba6d2 | 4518 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 4519 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4520 | num_labels++; |
e121d831 | 4521 | |
b57ba6d2 | 4522 | /* Do we have a second VNI? */ |
e121d831 | 4523 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 4524 | num_labels++; |
e121d831 | 4525 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4526 | } |
d62a17ae | 4527 | |
4528 | /* Process the route. */ | |
4529 | if (attr) | |
367b458c DS |
4530 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4531 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4532 | &label[0], num_labels, 0, &evpn); | |
d62a17ae | 4533 | else |
367b458c DS |
4534 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4535 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4536 | &label[0], num_labels, &evpn); | |
e121d831 QY |
4537 | goto done; |
4538 | ||
4539 | fail: | |
4540 | stream_failure: | |
4541 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4542 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
4543 | peer->bgp->vrf_id, peer->host); | |
4544 | ret = -1; | |
4545 | done: | |
4546 | stream_free(pkt); | |
d62a17ae | 4547 | return ret; |
128ea8ab | 4548 | } |
4549 | ||
4550 | /* | |
4551 | * Process received EVPN type-3 route (advertise or withdraw). | |
4552 | */ | |
d62a17ae | 4553 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4554 | struct attr *attr, uint8_t *pfx, int psize, |
4555 | uint32_t addpath_id) | |
d62a17ae | 4556 | { |
4557 | struct prefix_rd prd; | |
4558 | struct prefix_evpn p; | |
d7c0a89a | 4559 | uint8_t ipaddr_len; |
554cd77a | 4560 | uint32_t eth_tag; |
d62a17ae | 4561 | |
4562 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4563 | * IP len (1) and IP (4 or 16). | |
4564 | */ | |
4565 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4566 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4567 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4568 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4569 | return -1; |
4570 | } | |
4571 | ||
7fd077aa | 4572 | /* If PMSI is present, log if it is anything other than IR. |
4573 | * Note: We just simply ignore the values as it is not clear if | |
4574 | * doing anything else is better. | |
4575 | */ | |
4576 | if (attr && | |
4577 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
4578 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
4579 | ||
4580 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
4581 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4582 | flog_warn( | |
4583 | EC_BGP_EVPN_PMSI_PRESENT, | |
4584 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4585 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 4586 | } |
4587 | } | |
4588 | ||
d62a17ae | 4589 | /* Make prefix_rd */ |
4590 | prd.family = AF_UNSPEC; | |
4591 | prd.prefixlen = 64; | |
4592 | memcpy(&prd.val, pfx, 8); | |
4593 | pfx += 8; | |
4594 | ||
4595 | /* Make EVPN prefix. */ | |
6006b807 | 4596 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4597 | p.family = AF_EVPN; |
50f74cf1 | 4598 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4599 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4600 | ||
554cd77a VB |
4601 | /* Copy Ethernet Tag */ |
4602 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4603 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4604 | pfx += 4; |
4605 | ||
4606 | /* Get the IP. */ | |
4607 | ipaddr_len = *pfx++; | |
4608 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4609 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4610 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4611 | } else { |
af4c2728 | 4612 | flog_err( |
e50f7cfd | 4613 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4614 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4615 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4616 | return -1; | |
4617 | } | |
4618 | ||
4619 | /* Process the route. */ | |
4620 | if (attr) | |
367b458c DS |
4621 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4622 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, | |
4623 | 0, 0, NULL); | |
d62a17ae | 4624 | else |
367b458c DS |
4625 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4626 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4627 | NULL, 0, NULL); | |
4628 | return 0; | |
128ea8ab | 4629 | } |
4630 | ||
4631 | /* | |
4632 | * Process received EVPN type-5 route (advertise or withdraw). | |
4633 | */ | |
d62a17ae | 4634 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4635 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4636 | uint32_t addpath_id) |
d62a17ae | 4637 | { |
4638 | struct prefix_rd prd; | |
4639 | struct prefix_evpn p; | |
4640 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4641 | uint8_t ippfx_len; |
4642 | uint32_t eth_tag; | |
b57ba6d2 | 4643 | mpls_label_t label; /* holds the VNI as in the packet */ |
66ff6089 | 4644 | bool is_valid_update = true; |
d62a17ae | 4645 | |
4646 | /* Type-5 route should be 34 or 58 bytes: | |
4647 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4648 | * GW (4 or 16) and VNI (3). | |
4649 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4650 | */ | |
4651 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4652 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4653 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4654 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4655 | return -1; |
4656 | } | |
4657 | ||
4658 | /* Make prefix_rd */ | |
4659 | prd.family = AF_UNSPEC; | |
4660 | prd.prefixlen = 64; | |
4661 | memcpy(&prd.val, pfx, 8); | |
4662 | pfx += 8; | |
4663 | ||
4664 | /* Make EVPN prefix. */ | |
6006b807 | 4665 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4666 | p.family = AF_EVPN; |
50f74cf1 | 4667 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4668 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4669 | ||
4670 | /* Additional information outside of prefix - ESI and GW IP */ | |
4671 | memset(&evpn, 0, sizeof(evpn)); | |
4672 | ||
66ff6089 | 4673 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4674 | if (attr) |
66ff6089 | 4675 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4676 | pfx += ESI_BYTES; |
d62a17ae | 4677 | |
4678 | /* Fetch Ethernet Tag. */ | |
4679 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4680 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4681 | pfx += 4; |
4682 | ||
4683 | /* Fetch IP prefix length. */ | |
4684 | ippfx_len = *pfx++; | |
4685 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4686 | flog_err( |
e50f7cfd | 4687 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4688 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4689 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4690 | return -1; | |
4691 | } | |
3714a385 | 4692 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4693 | |
4694 | /* Determine IPv4 or IPv6 prefix */ | |
4695 | /* Since the address and GW are from the same family, this just becomes | |
4696 | * a simple check on the total size. | |
4697 | */ | |
4698 | if (psize == 34) { | |
3714a385 | 4699 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4700 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4701 | pfx += 4; |
860e740b IR |
4702 | SET_IPADDR_V4(&evpn.gw_ip); |
4703 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4704 | pfx += 4; |
d62a17ae | 4705 | } else { |
3714a385 | 4706 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4707 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4708 | IPV6_MAX_BYTELEN); | |
4709 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4710 | SET_IPADDR_V6(&evpn.gw_ip); |
4711 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4712 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4713 | } |
4714 | ||
b57ba6d2 MK |
4715 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4716 | memset(&label, 0, sizeof(label)); | |
4717 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4718 | |
4719 | /* | |
4720 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4721 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4722 | * field | |
6b11bd8d | 4723 | */ |
d62a17ae | 4724 | |
66ff6089 AD |
4725 | /* |
4726 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4727 | * at the same time is should be treated as withdraw | |
4728 | */ | |
860e740b IR |
4729 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4730 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4731 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4732 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4733 | peer->host); | |
4734 | is_valid_update = false; | |
4735 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4736 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4737 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4738 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4739 | if (attr) { |
860e740b IR |
4740 | if (is_zero_mac(&attr->rmac) && |
4741 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4742 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4743 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4744 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4745 | peer->host); | |
c6ec0c74 | 4746 | is_valid_update = false; |
66ff6089 | 4747 | } |
c6ec0c74 KA |
4748 | |
4749 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4750 | is_valid_update = false; | |
4751 | } | |
4752 | ||
d62a17ae | 4753 | /* Process the route. */ |
66ff6089 | 4754 | if (attr && is_valid_update) |
367b458c DS |
4755 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4756 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4757 | &label, 1, 0, &evpn); | |
66ff6089 AD |
4758 | else { |
4759 | if (!is_valid_update) { | |
4760 | char attr_str[BUFSIZ] = {0}; | |
4761 | ||
4762 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4763 | zlog_warn( | |
4764 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4765 | peer->hostname, peer->bgp->vrf_id, &p, | |
4766 | attr_str); | |
4767 | } | |
367b458c DS |
4768 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4769 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4770 | &label, 1, &evpn); | |
66ff6089 | 4771 | } |
d62a17ae | 4772 | |
367b458c | 4773 | return 0; |
d62a17ae | 4774 | } |
4775 | ||
5f040085 DS |
4776 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4777 | const struct prefix_rd *prd, | |
4778 | mpls_label_t *label, uint32_t num_labels, | |
4779 | struct attr *attr) | |
d62a17ae | 4780 | { |
4781 | int len; | |
4782 | char temp[16]; | |
5f040085 | 4783 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4784 | |
b5605493 | 4785 | memset(&temp, 0, sizeof(temp)); |
b03b8898 | 4786 | if (p->family != AF_EVPN) |
d62a17ae | 4787 | return; |
4788 | p_evpn_p = &(p->u.prefix_evpn); | |
4789 | ||
e9fc2840 | 4790 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4791 | IP and GW-IP have to be both ipv4 or ipv6 |
4792 | */ | |
3714a385 | 4793 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4794 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4795 | else |
e9fc2840 | 4796 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4797 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4798 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4799 | stream_put(s, prd->val, 8); | |
6c995628 | 4800 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4801 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4802 | else |
c44ab6f1 | 4803 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4804 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4805 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4806 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4807 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4808 | else |
3714a385 | 4809 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4810 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4811 | const struct bgp_route_evpn *evpn_overlay = |
4812 | bgp_attr_get_evpn_overlay(attr); | |
4813 | ||
3714a385 | 4814 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4815 | stream_put_ipv4(s, |
4816 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4817 | else |
860e740b | 4818 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4819 | } else { |
3714a385 | 4820 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4821 | stream_put_ipv4(s, 0); |
4822 | else | |
4823 | stream_put(s, &temp, 16); | |
4824 | } | |
4825 | ||
b57ba6d2 | 4826 | if (num_labels) |
d62a17ae | 4827 | stream_put(s, label, 3); |
4828 | else | |
4829 | stream_put3(s, 0); | |
128ea8ab | 4830 | } |
4831 | ||
4832 | /* | |
4833 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4834 | */ | |
e3b78da8 | 4835 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4836 | { |
e3b78da8 | 4837 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4838 | |
d62a17ae | 4839 | /* Remove EVPN routes and schedule for processing. */ |
4840 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4841 | |
d62a17ae | 4842 | /* Clear "live" flag and see if hash needs to be freed. */ |
4843 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4844 | if (!is_vni_configured(vpn)) | |
4845 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4846 | } |
4847 | ||
4848 | /* | |
4849 | * Free a VNI entry; iterator function called during cleanup. | |
4850 | */ | |
e3b78da8 | 4851 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4852 | { |
e3b78da8 | 4853 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4854 | |
d62a17ae | 4855 | delete_all_vni_routes(bgp, vpn); |
4856 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4857 | } |
4858 | ||
c581d8b0 MK |
4859 | /* |
4860 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4861 | */ | |
4862 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4863 | { | |
5e53dce3 | 4864 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4865 | |
58d8948c | 4866 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, true); |
10ebe1ab MK |
4867 | |
4868 | /* Map RT to VRF */ | |
5e53dce3 | 4869 | bgp_evpn = bgp_get_evpn(); |
58d8948c | 4870 | |
5e53dce3 | 4871 | if (!bgp_evpn) |
10ebe1ab | 4872 | return; |
58d8948c | 4873 | |
10ebe1ab | 4874 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); |
c581d8b0 MK |
4875 | } |
4876 | ||
4877 | /* | |
4878 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4879 | */ | |
4880 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4881 | { | |
ca337b46 SW |
4882 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, |
4883 | true); | |
c581d8b0 MK |
4884 | } |
4885 | ||
4886 | /* | |
4887 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4888 | */ | |
4889 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4890 | { | |
58d8948c | 4891 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, true); |
c581d8b0 MK |
4892 | } |
4893 | ||
4894 | /* | |
4895 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4896 | */ | |
4897 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4898 | { | |
ca337b46 SW |
4899 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, |
4900 | true); | |
c581d8b0 | 4901 | } |
128ea8ab | 4902 | |
f1f8b53c MK |
4903 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4904 | { | |
5e53dce3 | 4905 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4906 | struct listnode *node = NULL; |
4907 | struct bgpevpn *vpn = NULL; | |
4908 | ||
5e53dce3 T |
4909 | bgp_evpn = bgp_get_evpn(); |
4910 | if (!bgp_evpn) | |
f1f8b53c MK |
4911 | return; |
4912 | ||
4992b4ae MK |
4913 | /* update all type-5 routes */ |
4914 | update_advertise_vrf_routes(bgp_vrf); | |
4915 | ||
4916 | /* update all type-2 routes */ | |
f1f8b53c | 4917 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4918 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4919 | } |
4920 | ||
bf1061d8 VB |
4921 | /* |
4922 | * Handle autort change for a given VNI. | |
4923 | */ | |
e3b78da8 | 4924 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4925 | { |
e3b78da8 | 4926 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4927 | |
bf1061d8 VB |
4928 | if (!is_import_rt_configured(vpn)) { |
4929 | if (is_vni_live(vpn)) | |
4930 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4931 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4932 | list_delete_all_node(vpn->import_rtl); |
4933 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4934 | if (is_vni_live(vpn)) | |
4935 | bgp_evpn_install_routes(bgp, vpn); | |
4936 | } | |
4937 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4938 | list_delete_all_node(vpn->export_rtl); |
4939 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4940 | if (is_vni_live(vpn)) | |
4941 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4942 | } | |
4943 | } | |
4944 | ||
4204021e PG |
4945 | /* |
4946 | * Handle autort change for L3VNI. | |
4947 | */ | |
4948 | static void update_autort_l3vni(struct bgp *bgp) | |
4949 | { | |
4950 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4951 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4952 | return; | |
4953 | ||
4954 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4955 | if (is_l3vni_live(bgp)) | |
4956 | uninstall_routes_for_vrf(bgp); | |
4957 | ||
4958 | /* Cleanup the RT to VRF mapping */ | |
4959 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4960 | ||
4961 | /* Remove auto generated RT */ | |
4962 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4963 | ||
4964 | list_delete_all_node(bgp->vrf_import_rtl); | |
4965 | ||
4966 | /* Map auto derive or configured RTs */ | |
4967 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4968 | } | |
4969 | ||
4970 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4971 | list_delete_all_node(bgp->vrf_export_rtl); | |
4972 | ||
4973 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4974 | ||
4975 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4976 | ||
4977 | if (is_l3vni_live(bgp)) | |
4978 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4979 | } | |
4980 | ||
4981 | if (!is_l3vni_live(bgp)) | |
4982 | return; | |
4983 | ||
4984 | /* advertise type-5 routes if needed */ | |
4985 | update_advertise_vrf_routes(bgp); | |
4986 | ||
4987 | /* install all remote routes belonging to this l3vni | |
4988 | * into corresponding vrf | |
4989 | */ | |
4990 | install_routes_for_vrf(bgp); | |
4991 | } | |
4992 | ||
128ea8ab | 4993 | /* |
4994 | * Public functions. | |
4995 | */ | |
4996 | ||
5424b7ba | 4997 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4998 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4999 | afi_t afi, safi_t safi) |
5000 | { | |
5001 | int ret = 0; | |
5002 | struct prefix_evpn evp; | |
5424b7ba | 5003 | |
31310b25 | 5004 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 5005 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 5006 | if (ret) |
af4c2728 | 5007 | flog_err( |
e50f7cfd | 5008 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
5009 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
5010 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
5011 | } |
5012 | ||
342dd0c6 | 5013 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 5014 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 5015 | { |
5016 | struct bgp_table *table = NULL; | |
9bcb3eef | 5017 | struct bgp_dest *dest = NULL; |
40381db7 | 5018 | struct bgp_path_info *pi; |
342dd0c6 | 5019 | |
053905d2 | 5020 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5021 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 5022 | /* Only care about "selected" routes. Also ensure that |
5023 | * these are routes that are injectable into EVPN. | |
5024 | */ | |
25f2ca53 | 5025 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 5026 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5027 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5028 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 5029 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 5030 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 5031 | safi); |
25f2ca53 | 5032 | break; |
5033 | } | |
5034 | } | |
5035 | } | |
5424b7ba | 5036 | } |
342dd0c6 | 5037 | |
5fd9c12b KA |
5038 | /* |
5039 | * evpn - enable advertisement of default g/w | |
5040 | */ | |
5041 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
5042 | safi_t safi, bool add) | |
5043 | { | |
5044 | struct prefix ip_prefix; | |
5045 | ||
5046 | /* form the default prefix 0.0.0.0/0 */ | |
6006b807 | 5047 | memset(&ip_prefix, 0, sizeof(ip_prefix)); |
5fd9c12b KA |
5048 | ip_prefix.family = afi2family(afi); |
5049 | ||
5050 | if (add) { | |
5051 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
5052 | NULL, afi, safi); | |
5053 | } else { | |
5054 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
5055 | afi, safi); | |
5056 | } | |
5057 | } | |
5058 | ||
5059 | ||
2f69f6d3 | 5060 | /* |
5061 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
5062 | * to this function correspond to those of the source IP prefix (best | |
5063 | * path in the case of the attr. In the case of a local prefix (when we | |
5064 | * are advertising local subnets), the src_attr will be NULL. | |
5065 | */ | |
bd494ec5 | 5066 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
5067 | struct attr *src_attr, afi_t afi, |
5068 | safi_t safi) | |
5424b7ba MK |
5069 | { |
5070 | int ret = 0; | |
5071 | struct prefix_evpn evp; | |
7c82b312 | 5072 | |
31310b25 | 5073 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 5074 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 5075 | if (ret) |
e50f7cfd | 5076 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
5077 | "%u: Failed to create type-5 route for prefix %pFX", |
5078 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 5079 | } |
5080 | ||
2f69f6d3 | 5081 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
5082 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
5083 | * advertisement is enabled. | |
5084 | */ | |
996c9314 LB |
5085 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
5086 | safi_t safi) | |
342dd0c6 | 5087 | { |
5088 | struct bgp_table *table = NULL; | |
9bcb3eef | 5089 | struct bgp_dest *dest = NULL; |
40381db7 | 5090 | struct bgp_path_info *pi; |
342dd0c6 | 5091 | |
053905d2 | 5092 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5093 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 5094 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 5095 | * attribute. Also, ensure that the route is injectable |
5096 | * into EVPN. | |
2f69f6d3 | 5097 | * TODO: Support for AddPath for EVPN. |
5098 | */ | |
9bcb3eef | 5099 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5100 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5101 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
5102 | |
5103 | /* apply the route-map */ | |
5104 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 5105 | route_map_result_t ret; |
e34291b8 | 5106 | struct bgp_path_info tmp_pi; |
5107 | struct bgp_path_info_extra tmp_pie; | |
5108 | struct attr tmp_attr; | |
5109 | ||
5110 | tmp_attr = *pi->attr; | |
5111 | ||
5112 | /* Fill temp path_info */ | |
9bcb3eef DS |
5113 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
5114 | dest, pi, pi->peer, | |
5115 | &tmp_attr); | |
e34291b8 | 5116 | |
5117 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 5118 | |
996c9314 LB |
5119 | ret = route_map_apply( |
5120 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
5121 | .map, | |
9bcb3eef | 5122 | bgp_dest_get_prefix(dest), |
1782514f | 5123 | &tmp_pi); |
e34291b8 | 5124 | if (ret == RMAP_DENYMATCH) { |
5125 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 5126 | continue; |
e34291b8 | 5127 | } |
5128 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5129 | bgp_vrf, |
9bcb3eef | 5130 | bgp_dest_get_prefix(dest), |
b54892e0 | 5131 | &tmp_attr, afi, safi); |
e34291b8 | 5132 | } else |
5133 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5134 | bgp_vrf, |
9bcb3eef | 5135 | bgp_dest_get_prefix(dest), |
b54892e0 | 5136 | pi->attr, afi, safi); |
2f69f6d3 | 5137 | break; |
5138 | } | |
5139 | } | |
31310b25 | 5140 | } |
342dd0c6 | 5141 | } |
5142 | ||
ca337b46 SW |
5143 | static void rt_list_remove_node(struct list *rt_list, |
5144 | struct ecommunity *ecomdel, bool is_l3) | |
c581d8b0 | 5145 | { |
ca337b46 SW |
5146 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; |
5147 | struct vrf_route_target *l3rt = NULL; | |
5148 | struct ecommunity *ecom = NULL; | |
5149 | ||
ca337b46 SW |
5150 | if (is_l3) { |
5151 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5152 | if (ecommunity_match(l3rt->ecom, ecomdel)) { | |
5153 | evpn_vrf_rt_del(l3rt); | |
5154 | node_to_del = node; | |
5155 | break; | |
5156 | } | |
5157 | } | |
5158 | } else { | |
5159 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, ecom)) { | |
5160 | if (ecommunity_match(ecom, ecomdel)) { | |
5161 | ecommunity_free(&ecom); | |
5162 | node_to_del = node; | |
5163 | break; | |
5164 | } | |
5165 | } | |
5166 | } | |
5167 | ||
58d8948c | 5168 | |
ca337b46 SW |
5169 | if (node_to_del) |
5170 | list_delete_node(rt_list, node_to_del); | |
5171 | } | |
5172 | ||
5173 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl, | |
5174 | bool is_l3) | |
5175 | { | |
5176 | struct ecommunity *ecom_auto; | |
c581d8b0 MK |
5177 | struct ecommunity_val eval; |
5178 | ||
bf1061d8 VB |
5179 | if (bgp->advertise_autort_rfc8365) |
5180 | vni |= EVPN_AUTORT_VXLAN; | |
58d8948c | 5181 | |
c581d8b0 MK |
5182 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
5183 | ||
5184 | ecom_auto = ecommunity_new(); | |
1207a5bc | 5185 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 | 5186 | |
ca337b46 | 5187 | rt_list_remove_node(rtl, ecom_auto, is_l3); |
c581d8b0 MK |
5188 | |
5189 | ecommunity_free(&ecom_auto); | |
5190 | } | |
5191 | ||
58d8948c | 5192 | static void evpn_vrf_rt_routes_map(struct bgp *bgp_vrf) |
c581d8b0 | 5193 | { |
58d8948c SW |
5194 | /* map VRFs to its RTs and install routes matching this new RT */ |
5195 | if (is_l3vni_live(bgp_vrf)) { | |
5196 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5197 | install_routes_for_vrf(bgp_vrf); | |
5198 | } | |
5199 | } | |
ca337b46 | 5200 | |
58d8948c | 5201 | static void evpn_vrf_rt_routes_unmap(struct bgp *bgp_vrf) |
c581d8b0 | 5202 | { |
5ba238b7 | 5203 | /* uninstall routes from vrf */ |
3d0b43d7 | 5204 | if (is_l3vni_live(bgp_vrf)) |
5205 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
5206 | |
5207 | /* Cleanup the RT to VRF mapping */ | |
5208 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
58d8948c | 5209 | } |
10ebe1ab | 5210 | |
58d8948c SW |
5211 | static bool rt_list_has_cfgd_rt(struct list *rt_list) |
5212 | { | |
5213 | struct listnode *node = NULL, *nnode = NULL; | |
5214 | struct vrf_route_target *l3rt = NULL; | |
5215 | ||
5216 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5217 | if (!CHECK_FLAG(l3rt->flags, BGP_VRF_RT_AUTO)) | |
5218 | return true; | |
5219 | } | |
5220 | ||
5221 | return false; | |
5222 | } | |
5223 | ||
5224 | static void unconfigure_import_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5225 | { | |
5226 | if (!bgp_vrf->vrf_import_rtl) | |
5227 | return; /* this should never fail */ | |
5228 | ||
5229 | if (!is_l3vni_live(bgp_vrf)) | |
5230 | return; /* Nothing to do if no vni */ | |
5231 | ||
5232 | /* fall back to auto-generated RT if this was the last RT */ | |
5233 | if (list_isempty(bgp_vrf->vrf_import_rtl)) | |
5234 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5235 | } | |
5236 | ||
5237 | static void unconfigure_export_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5238 | { | |
5239 | ||
5240 | if (!bgp_vrf->vrf_export_rtl) | |
5241 | return; /* this should never fail */ | |
5242 | ||
5243 | if (!is_l3vni_live(bgp_vrf)) | |
5244 | return; /* Nothing to do if no vni */ | |
5245 | ||
5246 | /* fall back to auto-generated RT if this was the last RT */ | |
5247 | if (list_isempty(bgp_vrf->vrf_export_rtl)) | |
5248 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5249 | ||
5250 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5251 | } | |
5252 | ||
5253 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5254 | struct ecommunity *ecomadd, | |
5255 | bool is_wildcard) | |
5256 | { | |
5257 | struct vrf_route_target *newrt; | |
5258 | ||
5259 | newrt = evpn_vrf_rt_new(ecomadd); | |
5260 | ||
5261 | if (is_wildcard) | |
5262 | SET_FLAG(newrt->flags, BGP_VRF_RT_WILD); | |
5263 | ||
5264 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5265 | ||
5266 | /* Remove auto generated RT if not configured */ | |
5267 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5268 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5269 | |
5270 | /* Add the newly configured RT to RT list */ | |
ca337b46 | 5271 | listnode_add_sort(bgp_vrf->vrf_import_rtl, newrt); |
58d8948c | 5272 | |
c581d8b0 MK |
5273 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
5274 | ||
58d8948c SW |
5275 | evpn_vrf_rt_routes_map(bgp_vrf); |
5276 | } | |
5277 | ||
5278 | void bgp_evpn_configure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) | |
5279 | { | |
5280 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5281 | return; /* Already configured */ | |
5282 | ||
5283 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5284 | ||
5285 | if (!is_l3vni_live(bgp_vrf)) | |
5286 | return; /* Wait for VNI before adding rts */ | |
5287 | ||
5288 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5289 | ||
5290 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5291 | ||
5292 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5293 | } |
5294 | ||
5295 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5296 | struct ecommunity *ecomdel) | |
5297 | { | |
58d8948c SW |
5298 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5299 | return; /* Already un-configured */ | |
c581d8b0 | 5300 | |
58d8948c | 5301 | evpn_vrf_rt_routes_unmap(bgp_vrf); |
10ebe1ab | 5302 | |
ca337b46 SW |
5303 | /* Remove rt */ |
5304 | rt_list_remove_node(bgp_vrf->vrf_import_rtl, ecomdel, true); | |
10ebe1ab | 5305 | |
58d8948c | 5306 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_import_rtl)) |
c581d8b0 | 5307 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
c581d8b0 | 5308 | |
58d8948c | 5309 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); |
c581d8b0 | 5310 | |
58d8948c SW |
5311 | evpn_vrf_rt_routes_map(bgp_vrf); |
5312 | } | |
c581d8b0 | 5313 | |
58d8948c SW |
5314 | void bgp_evpn_unconfigure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5315 | { | |
5316 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5317 | return; /* Already un-configured */ | |
5318 | ||
5319 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5320 | ||
5321 | /* remove auto-generated RT */ | |
5322 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
5323 | ||
5324 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5325 | ||
5326 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); | |
5327 | ||
5328 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5329 | } |
5330 | ||
5331 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
5332 | struct ecommunity *ecomadd) | |
5333 | { | |
ca337b46 SW |
5334 | struct vrf_route_target *newrt; |
5335 | ||
5336 | newrt = evpn_vrf_rt_new(ecomadd); | |
5337 | ||
58d8948c SW |
5338 | /* Remove auto generated RT if not configured */ |
5339 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5340 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5341 | |
5342 | /* Add the new RT to the RT list */ | |
ca337b46 | 5343 | listnode_add_sort(bgp_vrf->vrf_export_rtl, newrt); |
58d8948c | 5344 | |
c581d8b0 MK |
5345 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
5346 | ||
ebdc9e64 AD |
5347 | if (is_l3vni_live(bgp_vrf)) |
5348 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5349 | } |
5350 | ||
58d8948c SW |
5351 | void bgp_evpn_configure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5352 | { | |
5353 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5354 | return; /* Already configured */ | |
5355 | ||
5356 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5357 | ||
5358 | if (!is_l3vni_live(bgp_vrf)) | |
5359 | return; /* Wait for VNI before adding rts */ | |
5360 | ||
5361 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5362 | ||
5363 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5364 | } | |
5365 | ||
c581d8b0 MK |
5366 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, |
5367 | struct ecommunity *ecomdel) | |
5368 | { | |
58d8948c SW |
5369 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5370 | return; /* Already un-configured */ | |
c581d8b0 | 5371 | |
ca337b46 SW |
5372 | /* Remove rt */ |
5373 | rt_list_remove_node(bgp_vrf->vrf_export_rtl, ecomdel, true); | |
c581d8b0 | 5374 | |
58d8948c | 5375 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_export_rtl)) |
c581d8b0 | 5376 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
c581d8b0 | 5377 | |
58d8948c SW |
5378 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); |
5379 | } | |
1525e99f | 5380 | |
58d8948c SW |
5381 | void bgp_evpn_unconfigure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5382 | { | |
5383 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5384 | return; /* Already un-configured */ | |
c581d8b0 | 5385 | |
58d8948c SW |
5386 | /* remove auto-generated RT */ |
5387 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
5388 | ||
5389 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5390 | ||
5391 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); | |
c581d8b0 MK |
5392 | } |
5393 | ||
2d48ee25 | 5394 | /* |
5395 | * Handle change to BGP router id. This is invoked twice by the change | |
5396 | * handler, first before the router id has been changed and then after | |
5397 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 5398 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 5399 | * will result in the routes being re-advertised. |
5400 | */ | |
d62a17ae | 5401 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 5402 | { |
5394a276 CS |
5403 | struct listnode *node; |
5404 | struct bgp *bgp_vrf; | |
5405 | ||
676f83b9 | 5406 | if (withdraw) { |
5407 | ||
5408 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 5409 | stored in the global table for this vrf |
5410 | */ | |
80b140af | 5411 | withdraw_router_id_vrf(bgp); |
676f83b9 | 5412 | |
5413 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 5414 | * L2-VNIs |
5415 | */ | |
d62a17ae | 5416 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5417 | (void (*)(struct hash_bucket *, |
d62a17ae | 5418 | void *))withdraw_router_id_vni, |
5419 | bgp); | |
5394a276 CS |
5420 | |
5421 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5422 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5423 | if (bgp_vrf->evpn_info->advertise_pip && | |
5424 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5425 | == INADDR_ANY)) | |
5426 | bgp_vrf->evpn_info->pip_ip.s_addr | |
5427 | = INADDR_ANY; | |
5428 | } | |
5429 | } | |
676f83b9 | 5430 | } else { |
5431 | ||
5394a276 CS |
5432 | /* Assign new default instance router-id */ |
5433 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5434 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5435 | if (bgp_vrf->evpn_info->advertise_pip && | |
5436 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5437 | == INADDR_ANY)) { | |
5438 | bgp_vrf->evpn_info->pip_ip = | |
5439 | bgp->router_id; | |
5440 | /* advertise type-5 routes with | |
5441 | * new nexthop | |
5442 | */ | |
5443 | update_advertise_vrf_routes(bgp_vrf); | |
5444 | } | |
5445 | } | |
5446 | } | |
5447 | ||
676f83b9 | 5448 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 5449 | * RD |
5450 | */ | |
80b140af | 5451 | update_router_id_vrf(bgp); |
676f83b9 | 5452 | |
5453 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 5454 | * new RD |
5455 | */ | |
d62a17ae | 5456 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5457 | (void (*)(struct hash_bucket *, |
d62a17ae | 5458 | void *))update_router_id_vni, |
5459 | bgp); | |
676f83b9 | 5460 | } |
2d48ee25 | 5461 | } |
5462 | ||
bf1061d8 VB |
5463 | /* |
5464 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
5465 | */ | |
5466 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
5467 | { | |
5468 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 5469 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
5470 | void*))update_autort_vni, |
5471 | bgp); | |
4204021e PG |
5472 | if (bgp->l3vni) |
5473 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
5474 | } |
5475 | ||
90e60aa7 | 5476 | /* |
5477 | * Handle change to export RT - update and advertise local routes. | |
5478 | */ | |
d62a17ae | 5479 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5480 | { |
d62a17ae | 5481 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 5482 | } |
5483 | ||
996c9314 | 5484 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 5485 | { |
5486 | if (withdraw) | |
5487 | delete_withdraw_vrf_routes(bgp_vrf); | |
5488 | else | |
5489 | update_advertise_vrf_routes(bgp_vrf); | |
5490 | } | |
5491 | ||
90e60aa7 | 5492 | /* |
5493 | * Handle change to RD. This is invoked twice by the change handler, | |
5494 | * first before the RD has been changed and then after the RD has | |
5495 | * been changed. The first invocation will result in local routes | |
5496 | * of this VNI being deleted and withdrawn and the next will result | |
5497 | * in the routes being re-advertised. | |
5498 | */ | |
d62a17ae | 5499 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
5500 | int withdraw) | |
90e60aa7 | 5501 | { |
d62a17ae | 5502 | if (withdraw) |
5503 | delete_withdraw_vni_routes(bgp, vpn); | |
5504 | else | |
5505 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 5506 | } |
5507 | ||
5508 | /* | |
5509 | * Install routes for this VNI. Invoked upon change to Import RT. | |
5510 | */ | |
d62a17ae | 5511 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5512 | { |
d62a17ae | 5513 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 5514 | } |
5515 | ||
5516 | /* | |
5517 | * Uninstall all routes installed for this VNI. Invoked upon change | |
5518 | * to Import RT. | |
5519 | */ | |
d62a17ae | 5520 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5521 | { |
d62a17ae | 5522 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 5523 | } |
5524 | ||
b16031a2 | 5525 | /* |
b57ba6d2 | 5526 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 5527 | */ |
d7c0a89a | 5528 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 5529 | int len) |
b16031a2 | 5530 | { |
b57ba6d2 | 5531 | vni_t vni1, vni2; |
b16031a2 | 5532 | |
b57ba6d2 MK |
5533 | vni1 = label2vni(label); |
5534 | if (num_labels == 2) { | |
996c9314 | 5535 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
5536 | snprintf(buf, len, "%u/%u", vni1, vni2); |
5537 | } else | |
5538 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 5539 | return buf; |
b16031a2 | 5540 | } |
5541 | ||
9c92b5f7 MK |
5542 | /* |
5543 | * Function to convert evpn route to json format. | |
5544 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
5545 | */ | |
bd494ec5 | 5546 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 5547 | { |
b682f6de | 5548 | char buf1[ETHER_ADDR_STRLEN]; |
5549 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
5550 | uint8_t family; |
5551 | uint8_t prefixlen; | |
9c92b5f7 | 5552 | |
b682f6de | 5553 | if (!json) |
5554 | return; | |
9c92b5f7 | 5555 | |
44c69747 LK |
5556 | json_object_int_add(json, "routeType", p->prefix.route_type); |
5557 | ||
5558 | switch (p->prefix.route_type) { | |
5559 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5560 | json_object_int_add(json, "ethTag", |
44c69747 LK |
5561 | p->prefix.macip_addr.eth_tag); |
5562 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
5563 | json_object_string_add(json, "mac", | |
5564 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
5565 | sizeof(buf1))); | |
5566 | ||
5567 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
5568 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
5569 | AF_INET6; | |
5570 | prefixlen = (family == AF_INET) ? | |
5571 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
5572 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
5573 | buf2, PREFIX2STR_BUFFER); | |
5574 | json_object_int_add(json, "ipLen", prefixlen); | |
5575 | json_object_string_add(json, "ip", buf2); | |
5576 | } | |
5577 | break; | |
dff8f48d | 5578 | |
44c69747 LK |
5579 | case BGP_EVPN_IMET_ROUTE: |
5580 | json_object_int_add(json, "ethTag", | |
5581 | p->prefix.imet_addr.eth_tag); | |
5582 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5583 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
5584 | IPV6_MAX_BITLEN; | |
5585 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
5586 | PREFIX2STR_BUFFER); | |
5587 | json_object_int_add(json, "ipLen", prefixlen); | |
5588 | json_object_string_add(json, "ip", buf2); | |
5589 | break; | |
dff8f48d | 5590 | |
44c69747 LK |
5591 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5592 | json_object_int_add(json, "ethTag", | |
5593 | p->prefix.prefix_addr.eth_tag); | |
5594 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5595 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
5596 | buf2, sizeof(buf2)); | |
5597 | json_object_int_add(json, "ipLen", | |
5598 | p->prefix.prefix_addr.ip_prefix_length); | |
5599 | json_object_string_add(json, "ip", buf2); | |
5600 | break; | |
5601 | ||
5602 | default: | |
5603 | break; | |
dff8f48d | 5604 | } |
9c92b5f7 MK |
5605 | } |
5606 | ||
128ea8ab | 5607 | /* |
5608 | * Encode EVPN prefix in Update (MP_REACH) | |
5609 | */ | |
5f040085 DS |
5610 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5611 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 5612 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 5613 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 5614 | { |
5615 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5616 | int len, ipa_len = 0; |
d62a17ae | 5617 | |
be92fc9f | 5618 | if (addpath_capable) |
d62a17ae | 5619 | stream_putl(s, addpath_tx_id); |
5620 | ||
5621 | /* Route type */ | |
5622 | stream_putc(s, evp->prefix.route_type); | |
5623 | ||
5624 | switch (evp->prefix.route_type) { | |
5625 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5626 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5627 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5628 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5629 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5630 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5631 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5632 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5633 | len += 3; | |
5634 | stream_putc(s, len); | |
996c9314 | 5635 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 5636 | if (attr) |
c44ab6f1 | 5637 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
5638 | else |
5639 | stream_put(s, 0, 10); | |
3714a385 | 5640 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5641 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5642 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5643 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5644 | if (ipa_len) /* IP */ | |
5645 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5646 | ipa_len); | |
b57ba6d2 MK |
5647 | /* 1st label is the L2 VNI */ |
5648 | stream_put(s, label, BGP_LABEL_BYTES); | |
5649 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5650 | if (ipa_len && num_labels > 1) | |
996c9314 | 5651 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5652 | break; |
5653 | ||
5654 | case BGP_EVPN_IMET_ROUTE: | |
5655 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5656 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5657 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5658 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5659 | /* Originating Router's IP Addr */ | |
3714a385 | 5660 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5661 | break; |
5662 | ||
50f74cf1 | 5663 | case BGP_EVPN_ES_ROUTE: |
5664 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5665 | stream_put(s, prd->val, 8); /* RD */ | |
5666 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5667 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5668 | /* VTEP IP */ |
5669 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5670 | break; |
5671 | ||
c44ab6f1 AK |
5672 | case BGP_EVPN_AD_ROUTE: |
5673 | /* RD, ESI, EthTag, 1 VNI */ | |
5674 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
5675 | stream_putc(s, len); | |
5676 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
5677 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
5678 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
5679 | stream_put(s, label, BGP_LABEL_BYTES); | |
5680 | break; | |
5681 | ||
d62a17ae | 5682 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5683 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5684 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5685 | break; |
5686 | ||
5687 | default: | |
5688 | break; | |
5689 | } | |
5690 | } | |
5691 | ||
5692 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5693 | struct bgp_nlri *packet, int withdraw) | |
5694 | { | |
d7c0a89a QY |
5695 | uint8_t *pnt; |
5696 | uint8_t *lim; | |
d62a17ae | 5697 | afi_t afi; |
5698 | safi_t safi; | |
d7c0a89a | 5699 | uint32_t addpath_id; |
be92fc9f | 5700 | bool addpath_capable; |
d62a17ae | 5701 | int psize = 0; |
d7c0a89a | 5702 | uint8_t rtype; |
d62a17ae | 5703 | struct prefix p; |
5704 | ||
d62a17ae | 5705 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5706 | pnt = packet->nlri; | |
5707 | lim = pnt + packet->length; | |
5708 | afi = packet->afi; | |
5709 | safi = packet->safi; | |
5710 | addpath_id = 0; | |
5711 | ||
be92fc9f | 5712 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 5713 | |
5714 | for (; pnt < lim; pnt += psize) { | |
5715 | /* Clear prefix structure. */ | |
6006b807 | 5716 | memset(&p, 0, sizeof(p)); |
d62a17ae | 5717 | |
5718 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 5719 | if (addpath_capable) { |
d62a17ae | 5720 | /* When packet overflow occurs return immediately. */ |
5721 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5722 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5723 | |
a3a850a1 S |
5724 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5725 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5726 | pnt += BGP_ADDPATH_ID_LEN; |
5727 | } | |
5728 | ||
5729 | /* All EVPN NLRI types start with type and length. */ | |
5730 | if (pnt + 2 > lim) | |
513386b5 | 5731 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5732 | |
5733 | rtype = *pnt++; | |
3f54c705 | 5734 | psize = *pnt++; |
d62a17ae | 5735 | |
5736 | /* When packet overflow occur return immediately. */ | |
5737 | if (pnt + psize > lim) | |
513386b5 | 5738 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5739 | |
5740 | switch (rtype) { | |
5741 | case BGP_EVPN_MAC_IP_ROUTE: | |
5742 | if (process_type2_route(peer, afi, safi, | |
5743 | withdraw ? NULL : attr, pnt, | |
5744 | psize, addpath_id)) { | |
af4c2728 | 5745 | flog_err( |
e50f7cfd | 5746 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5747 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5748 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5749 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5750 | } |
5751 | break; | |
5752 | ||
5753 | case BGP_EVPN_IMET_ROUTE: | |
5754 | if (process_type3_route(peer, afi, safi, | |
5755 | withdraw ? NULL : attr, pnt, | |
5756 | psize, addpath_id)) { | |
af4c2728 | 5757 | flog_err( |
e50f7cfd | 5758 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5759 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5760 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5761 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5762 | } |
5763 | break; | |
5764 | ||
50f74cf1 | 5765 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5766 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5767 | withdraw ? NULL : attr, pnt, |
5768 | psize, addpath_id)) { | |
af4c2728 | 5769 | flog_err( |
e50f7cfd | 5770 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5771 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5772 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5773 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5774 | } |
5775 | break; | |
5776 | ||
c44ab6f1 AK |
5777 | case BGP_EVPN_AD_ROUTE: |
5778 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5779 | withdraw ? NULL : attr, pnt, | |
5780 | psize, addpath_id)) { | |
5781 | flog_err( | |
5782 | EC_BGP_PKT_PROCESS, | |
5783 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5784 | peer->bgp->vrf_id, peer->host, psize); | |
5785 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5786 | } | |
5787 | break; | |
5788 | ||
d62a17ae | 5789 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5790 | if (process_type5_route(peer, afi, safi, |
5791 | withdraw ? NULL : attr, pnt, | |
5792 | psize, addpath_id)) { | |
af4c2728 | 5793 | flog_err( |
e50f7cfd | 5794 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5795 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5796 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5797 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5798 | } |
5799 | break; | |
5800 | ||
5801 | default: | |
5802 | break; | |
5803 | } | |
5804 | } | |
5805 | ||
5806 | /* Packet length consistency check. */ | |
5807 | if (pnt != lim) | |
513386b5 | 5808 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5809 | |
513386b5 | 5810 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5811 | } |
5812 | ||
10ebe1ab MK |
5813 | /* |
5814 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5815 | * The mapping will be used during route processing. | |
10ebe1ab MK |
5816 | * bgp_vrf: specific bgp vrf instance on which RT is configured |
5817 | */ | |
5818 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5819 | { | |
58d8948c | 5820 | struct listnode *node, *nnode; |
ca337b46 | 5821 | struct vrf_route_target *l3rt; |
10ebe1ab | 5822 | |
58d8948c SW |
5823 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5824 | map_vrf_to_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5825 | } |
5826 | ||
5827 | /* | |
5828 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5829 | */ | |
5830 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5831 | { | |
10ebe1ab | 5832 | struct listnode *node, *nnode; |
ca337b46 | 5833 | struct vrf_route_target *l3rt; |
10ebe1ab | 5834 | |
58d8948c SW |
5835 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5836 | unmap_vrf_from_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5837 | } |
5838 | ||
128ea8ab | 5839 | /* |
5840 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5841 | * The mapping will be used during route processing. | |
5842 | */ | |
d62a17ae | 5843 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5844 | { |
f6e07e1b | 5845 | uint32_t i; |
d62a17ae | 5846 | struct ecommunity_val *eval; |
5847 | struct listnode *node, *nnode; | |
5848 | struct ecommunity *ecom; | |
128ea8ab | 5849 | |
d62a17ae | 5850 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5851 | for (i = 0; i < ecom->size; i++) { | |
5852 | eval = (struct ecommunity_val *)(ecom->val | |
5853 | + (i | |
5854 | * ECOMMUNITY_SIZE)); | |
5855 | map_vni_to_rt(bgp, vpn, eval); | |
5856 | } | |
5857 | } | |
128ea8ab | 5858 | } |
5859 | ||
5860 | /* | |
5861 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5862 | */ | |
d62a17ae | 5863 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5864 | { |
f6e07e1b | 5865 | uint32_t i; |
d62a17ae | 5866 | struct ecommunity_val *eval; |
5867 | struct listnode *node, *nnode; | |
5868 | struct ecommunity *ecom; | |
128ea8ab | 5869 | |
d62a17ae | 5870 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5871 | for (i = 0; i < ecom->size; i++) { | |
5872 | struct irt_node *irt; | |
5873 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5874 | |
d62a17ae | 5875 | eval = (struct ecommunity_val *)(ecom->val |
5876 | + (i | |
5877 | * ECOMMUNITY_SIZE)); | |
5878 | /* If using "automatic" RT, we only care about the | |
5879 | * local-admin sub-field. | |
5880 | * This is to facilitate using VNI as the RT for EBGP | |
5881 | * peering too. | |
5882 | */ | |
5883 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5884 | if (!is_import_rt_configured(vpn)) | |
5885 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5886 | |
d62a17ae | 5887 | irt = lookup_import_rt(bgp, &eval_tmp); |
5888 | if (irt) | |
5889 | unmap_vni_from_rt(bgp, vpn, irt); | |
5890 | } | |
5891 | } | |
128ea8ab | 5892 | } |
5893 | ||
5894 | /* | |
5895 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5896 | * The mapping will be used during route processing. | |
5897 | */ | |
d62a17ae | 5898 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5899 | { |
58d8948c | 5900 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl, false); |
d62a17ae | 5901 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5902 | |
d62a17ae | 5903 | /* Map RT to VNI */ |
5904 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5905 | } |
5906 | ||
5907 | /* | |
5908 | * Derive Export RT automatically for VNI. | |
5909 | */ | |
d62a17ae | 5910 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5911 | { |
58d8948c | 5912 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl, false); |
d62a17ae | 5913 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5914 | } |
5915 | ||
676f83b9 | 5916 | /* |
5917 | * Derive RD automatically for VNI using passed information - it | |
5918 | * is of the form RouterId:unique-id-for-vni. | |
5919 | */ | |
5920 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5921 | { | |
9e97ff03 CS |
5922 | if (is_vrf_rd_configured(bgp)) |
5923 | return; | |
5924 | ||
92708db6 | 5925 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5926 | } |
5927 | ||
128ea8ab | 5928 | /* |
5929 | * Derive RD automatically for VNI using passed information - it | |
5930 | * is of the form RouterId:unique-id-for-vni. | |
5931 | */ | |
d62a17ae | 5932 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5933 | { |
c44ab6f1 | 5934 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5935 | |
d62a17ae | 5936 | vpn->prd.family = AF_UNSPEC; |
5937 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5938 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5939 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5940 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5941 | } |
5942 | ||
7df407ed CS |
5943 | /* |
5944 | * Lookup L3-VNI | |
5945 | */ | |
5946 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5947 | { | |
5948 | struct list *inst = bm->bgp; | |
5949 | struct listnode *node; | |
5950 | struct bgp *bgp_vrf; | |
5951 | ||
5952 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5953 | if (bgp_vrf->l3vni == vni) | |
5954 | return true; | |
5955 | } | |
5956 | ||
5957 | return false; | |
5958 | } | |
5959 | ||
128ea8ab | 5960 | /* |
5961 | * Lookup VNI. | |
5962 | */ | |
d62a17ae | 5963 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5964 | { |
d62a17ae | 5965 | struct bgpevpn *vpn; |
5966 | struct bgpevpn tmp; | |
128ea8ab | 5967 | |
6006b807 | 5968 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 5969 | tmp.vni = vni; |
5970 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5971 | return vpn; | |
128ea8ab | 5972 | } |
5973 | ||
5974 | /* | |
5975 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5976 | */ | |
d62a17ae | 5977 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5978 | struct in_addr originator_ip, |
5979 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5980 | struct in_addr mcast_grp, |
5981 | ifindex_t svi_ifindex) | |
128ea8ab | 5982 | { |
d62a17ae | 5983 | struct bgpevpn *vpn; |
128ea8ab | 5984 | |
d62a17ae | 5985 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5986 | |
d62a17ae | 5987 | /* Set values - RD and RT set to defaults. */ |
5988 | vpn->vni = vni; | |
5989 | vpn->originator_ip = originator_ip; | |
29c53922 | 5990 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5991 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5992 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5993 | |
d62a17ae | 5994 | /* Initialize route-target import and export lists */ |
5995 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5996 | vpn->import_rtl->cmp = |
5997 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5998 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5999 | vpn->export_rtl = list_new(); |
f4a5218d AK |
6000 | vpn->export_rtl->cmp = |
6001 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
6002 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 6003 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 6004 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 6005 | |
852d9f97 SW |
6006 | /* Initialize EVPN route tables. */ |
6007 | vpn->ip_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
6008 | vpn->mac_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
128ea8ab | 6009 | |
d62a17ae | 6010 | /* Add to hash */ |
ac390ef8 | 6011 | (void)hash_get(bgp->vnihash, vpn, hash_alloc_intern); |
6a8657d0 | 6012 | |
021b6596 AD |
6013 | bgp_evpn_remote_ip_hash_init(vpn); |
6014 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6015 | ||
6a8657d0 MK |
6016 | /* add to l2vni list on corresponding vrf */ |
6017 | bgpevpn_link_to_l3vni(vpn); | |
6018 | ||
c44ab6f1 AK |
6019 | bgp_evpn_vni_es_init(vpn); |
6020 | ||
d62a17ae | 6021 | QOBJ_REG(vpn, bgpevpn); |
6022 | return vpn; | |
128ea8ab | 6023 | } |
6024 | ||
6025 | /* | |
6026 | * Free a given VPN - called in multiple scenarios such as zebra | |
6027 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
6028 | * This just frees appropriate memory, caller should have taken other | |
6029 | * needed actions. | |
6030 | */ | |
d62a17ae | 6031 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 6032 | { |
021b6596 | 6033 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 6034 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 6035 | bgpevpn_unlink_from_l3vni(vpn); |
852d9f97 SW |
6036 | bgp_table_unlock(vpn->ip_table); |
6037 | bgp_table_unlock(vpn->mac_table); | |
d62a17ae | 6038 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); |
6a154c88 DL |
6039 | list_delete(&vpn->import_rtl); |
6040 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 6041 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 6042 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 6043 | hash_release(bgp->vnihash, vpn); |
6044 | QOBJ_UNREG(vpn); | |
6045 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 6046 | } |
6047 | ||
3727e359 DA |
6048 | static void hash_evpn_free(struct bgpevpn *vpn) |
6049 | { | |
6050 | XFREE(MTYPE_BGP_EVPN, vpn); | |
6051 | } | |
6052 | ||
50f74cf1 | 6053 | /* |
6054 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 6055 | */ |
d62a17ae | 6056 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6057 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6058 | { |
40381db7 | 6059 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 6060 | } |
6061 | ||
6062 | /* | |
50f74cf1 | 6063 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 6064 | */ |
d62a17ae | 6065 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6066 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6067 | { |
40381db7 | 6068 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 6069 | } |
6070 | ||
db0e1937 MK |
6071 | /* filter routes which have martian next hops */ |
6072 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
6073 | { | |
0291c246 MK |
6074 | afi_t afi; |
6075 | safi_t safi; | |
9bcb3eef | 6076 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 6077 | struct bgp_table *table; |
40381db7 | 6078 | struct bgp_path_info *pi; |
db0e1937 MK |
6079 | |
6080 | afi = AFI_L2VPN; | |
6081 | safi = SAFI_EVPN; | |
6082 | ||
6083 | /* Walk entire global routing table and evaluate routes which could be | |
6084 | * imported into this VPN. Note that we cannot just look at the routes | |
6085 | * for the VNI's RD - | |
6086 | * remote routes applicable for this VNI could have any RD. | |
6087 | */ | |
6088 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
6089 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
6090 | rd_dest = bgp_route_next(rd_dest)) { | |
6091 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
6092 | if (!table) |
6093 | continue; | |
6094 | ||
9bcb3eef DS |
6095 | for (dest = bgp_table_top(table); dest; |
6096 | dest = bgp_route_next(dest)) { | |
db0e1937 | 6097 | |
9bcb3eef | 6098 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 6099 | pi = pi->next) { |
db0e1937 MK |
6100 | |
6101 | /* Consider "valid" remote routes applicable for | |
6102 | * this VNI. */ | |
40381db7 DS |
6103 | if (!(pi->type == ZEBRA_ROUTE_BGP |
6104 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 6105 | continue; |
9bcb3eef DS |
6106 | if (bgp_nexthop_self(bgp, afi, pi->type, |
6107 | pi->sub_type, pi->attr, | |
6108 | dest)) { | |
b54892e0 | 6109 | const struct prefix *p = |
9bcb3eef | 6110 | bgp_dest_get_prefix(dest); |
db0e1937 | 6111 | |
b54892e0 DS |
6112 | if (bgp_debug_update(pi->peer, p, NULL, |
6113 | 1)) { | |
6114 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 6115 | |
b54892e0 | 6116 | bgp_dump_attr(pi->attr, |
5022c833 DA |
6117 | attr_str, |
6118 | sizeof(attr_str)); | |
db0e1937 | 6119 | |
db0e1937 | 6120 | zlog_debug( |
56ca3b5b | 6121 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 6122 | bgp->vrf_id, dest, |
db0e1937 | 6123 | attr_str); |
b54892e0 | 6124 | } |
db0e1937 | 6125 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 6126 | p, pi); |
db0e1937 | 6127 | |
9bcb3eef | 6128 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 6129 | safi); |
db0e1937 | 6130 | } |
db0e1937 MK |
6131 | } |
6132 | } | |
6133 | } | |
6134 | ||
6135 | return 0; | |
6136 | } | |
6137 | ||
128ea8ab | 6138 | /* |
6139 | * Handle del of a local MACIP. | |
6140 | */ | |
d62a17ae | 6141 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 6142 | struct ipaddr *ip, int state) |
128ea8ab | 6143 | { |
d62a17ae | 6144 | struct bgpevpn *vpn; |
6145 | struct prefix_evpn p; | |
9bcb3eef | 6146 | struct bgp_dest *dest; |
128ea8ab | 6147 | |
d62a17ae | 6148 | /* Lookup VNI hash - should exist. */ |
6149 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6150 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6151 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6152 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 6153 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6154 | return -1; | |
6155 | } | |
128ea8ab | 6156 | |
d62a17ae | 6157 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
6158 | if (state == ZEBRA_NEIGH_ACTIVE) { |
6159 | /* Remove EVPN type-2 route and schedule for processing. */ | |
6160 | delete_evpn_route(bgp, vpn, &p); | |
6161 | } else { | |
6162 | /* Re-instate the current remote best path if any */ | |
852d9f97 | 6163 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
e71ad4b6 | 6164 | if (dest) { |
9bcb3eef | 6165 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
6166 | bgp_dest_unlock_node(dest); |
6167 | } | |
ec0ab544 | 6168 | } |
128ea8ab | 6169 | |
d62a17ae | 6170 | return 0; |
128ea8ab | 6171 | } |
6172 | ||
6173 | /* | |
6174 | * Handle add of a local MACIP. | |
6175 | */ | |
d62a17ae | 6176 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 6177 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 6178 | { |
d62a17ae | 6179 | struct bgpevpn *vpn; |
6180 | struct prefix_evpn p; | |
128ea8ab | 6181 | |
d62a17ae | 6182 | /* Lookup VNI hash - should exist. */ |
6183 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6184 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6185 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6186 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 6187 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6188 | return -1; | |
6189 | } | |
128ea8ab | 6190 | |
d62a17ae | 6191 | /* Create EVPN type-2 route and schedule for processing. */ |
6192 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 6193 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 6194 | flog_err( |
e50f7cfd | 6195 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 6196 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 6197 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
6198 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
6199 | ? "sticky gateway" | |
6200 | : "", | |
c0d72166 | 6201 | mac, ip, flags); |
d62a17ae | 6202 | return -1; |
6203 | } | |
128ea8ab | 6204 | |
d62a17ae | 6205 | return 0; |
128ea8ab | 6206 | } |
6207 | ||
e3b78da8 | 6208 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
6209 | struct bgp *bgp_vrf) |
6210 | { | |
e3b78da8 | 6211 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 6212 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 6213 | |
5e53dce3 T |
6214 | bgp_evpn = bgp_get_evpn(); |
6215 | assert(bgp_evpn); | |
6a8657d0 | 6216 | |
6a8657d0 MK |
6217 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
6218 | bgpevpn_link_to_l3vni(vpn); | |
6219 | } | |
6220 | ||
14e814ea CS |
6221 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
6222 | struct ethaddr *svi_rmac, | |
6223 | struct ethaddr *vrr_rmac, | |
0483af6e | 6224 | struct in_addr originator_ip, int filter, |
14e814ea CS |
6225 | ifindex_t svi_ifindex, |
6226 | bool is_anycast_mac) | |
fe1dc5a3 MK |
6227 | { |
6228 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 6229 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
6230 | struct listnode *node = NULL; |
6231 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
6232 | as_t as = 0; |
6233 | ||
3621ebc5 | 6234 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 6235 | * auto-creatio |
6236 | */ | |
5e53dce3 T |
6237 | bgp_evpn = bgp_get_evpn(); |
6238 | if (!bgp_evpn) { | |
af4c2728 | 6239 | flog_err( |
e50f7cfd | 6240 | EC_BGP_NO_DFLT, |
3621ebc5 | 6241 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 6242 | l3vni); |
fe1dc5a3 MK |
6243 | return -1; |
6244 | } | |
5e53dce3 | 6245 | as = bgp_evpn->as; |
fe1dc5a3 | 6246 | |
0437e105 | 6247 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 6248 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
6249 | if (!bgp_vrf) { |
6250 | ||
6251 | int ret = 0; | |
6252 | ||
5d5393b9 DL |
6253 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
6254 | vrf_id == VRF_DEFAULT | |
9eb11997 PG |
6255 | ? BGP_INSTANCE_TYPE_DEFAULT |
6256 | : BGP_INSTANCE_TYPE_VRF, | |
6257 | NULL); | |
fe1dc5a3 | 6258 | switch (ret) { |
fe1dc5a3 | 6259 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 6260 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
9eb11997 PG |
6261 | "BGP instance is already running; AS is %s", |
6262 | bgp_vrf->as_pretty); | |
fe1dc5a3 MK |
6263 | return -1; |
6264 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 6265 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 6266 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
6267 | return -1; |
6268 | } | |
6269 | ||
6270 | /* mark as auto created */ | |
6271 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
6272 | } | |
6273 | ||
0483af6e | 6274 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 6275 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 6276 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 6277 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 6278 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 6279 | |
14e814ea CS |
6280 | /* copy anycast MAC from VRR MAC */ |
6281 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
6282 | /* copy sys RMAC from SVI MAC */ | |
6283 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
6284 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
6285 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
6286 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
6287 | ||
c0d72166 DS |
6288 | if (bgp_debug_zebra(NULL)) |
6289 | zlog_debug( | |
6290 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
6291 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
6292 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
6293 | : "disable", | |
6294 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
6295 | &bgp_vrf->evpn_info->pip_rmac_static, | |
6296 | is_anycast_mac ? "Enable" : "Disable"); | |
6297 | ||
c48d9f5f | 6298 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 6299 | if (filter) { |
c48d9f5f MK |
6300 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6301 | ||
10f70510 AD |
6302 | /* |
6303 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
6304 | * set before linking vrf to L3VNI. Thus, no need to clear | |
6305 | * that explicitly. | |
6306 | */ | |
6307 | } else { | |
6308 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
6309 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
6310 | ||
6311 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6312 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
6313 | ||
6314 | /* | |
6315 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
6316 | * flag, update all MACIP routes in this VNI | |
6317 | */ | |
6318 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
6319 | update_all_type2_routes(bgp_evpn, vpn); | |
6320 | } | |
6321 | } | |
6322 | } | |
6323 | ||
530e8a6e | 6324 | /* Map auto derive or configured RTs */ |
58d8948c SW |
6325 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD) || |
6326 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6327 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6328 | else |
6329 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
6330 | ||
58d8948c SW |
6331 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD) || |
6332 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6333 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6334 | |
6335 | /* auto derive RD */ | |
676f83b9 | 6336 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 6337 | |
6a8657d0 | 6338 | /* link all corresponding l2vnis */ |
5e53dce3 | 6339 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 6340 | (void (*)(struct hash_bucket *, |
996c9314 | 6341 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
6342 | bgp_vrf); |
6343 | ||
c48d9f5f MK |
6344 | /* Only update all corresponding type-2 routes if we are advertising two |
6345 | * labels along with type-2 routes | |
6346 | */ | |
6347 | if (!filter) | |
6348 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 6349 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 6350 | |
06d2e8f3 MK |
6351 | /* advertise type-5 routes if needed */ |
6352 | update_advertise_vrf_routes(bgp_vrf); | |
6353 | ||
5ba238b7 MK |
6354 | /* install all remote routes belonging to this l3vni into correspondng |
6355 | * vrf */ | |
6356 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
6357 | |
6358 | return 0; | |
6359 | } | |
6360 | ||
996c9314 | 6361 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
6362 | { |
6363 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 6364 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 6365 | struct listnode *node = NULL; |
18abc1eb | 6366 | struct listnode *next = NULL; |
f1f8b53c | 6367 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
6368 | |
6369 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
6370 | if (!bgp_vrf) { | |
af4c2728 | 6371 | flog_err( |
e50f7cfd | 6372 | EC_BGP_NO_DFLT, |
996c9314 LB |
6373 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
6374 | l3vni); | |
fe1dc5a3 MK |
6375 | return -1; |
6376 | } | |
6377 | ||
5e53dce3 T |
6378 | bgp_evpn = bgp_get_evpn(); |
6379 | if (!bgp_evpn) { | |
af4c2728 | 6380 | flog_err( |
e50f7cfd | 6381 | EC_BGP_NO_DFLT, |
3621ebc5 | 6382 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 6383 | l3vni); |
f1f8b53c MK |
6384 | return -1; |
6385 | } | |
6386 | ||
d846168d | 6387 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 6388 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
6389 | * routes. This will uninstalling the routes from zebra and decremnt the |
6390 | * bgp info count. | |
523cafc4 | 6391 | */ |
d846168d | 6392 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 6393 | |
06d2e8f3 MK |
6394 | /* delete/withdraw all type-5 routes */ |
6395 | delete_withdraw_vrf_routes(bgp_vrf); | |
6396 | ||
fe1dc5a3 MK |
6397 | /* remove the l3vni from vrf instance */ |
6398 | bgp_vrf->l3vni = 0; | |
6399 | ||
6400 | /* remove the Rmac from the BGP vrf */ | |
6401 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
6402 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
6403 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
6404 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
6405 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 6406 | |
530e8a6e | 6407 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 6408 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 6409 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
6410 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
6411 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 6412 | } |
530e8a6e CS |
6413 | |
6414 | /* remove default export RT */ | |
6415 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
6416 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 6417 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 6418 | } |
fe1dc5a3 | 6419 | |
f1f8b53c | 6420 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
6421 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
6422 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6423 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 6424 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
6425 | } |
6426 | } | |
fe1dc5a3 | 6427 | |
18abc1eb | 6428 | /* If any L2VNIs point to this instance, unlink them. */ |
6429 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
6430 | bgpevpn_unlink_from_l3vni(vpn); | |
6431 | ||
ff9d54fb CS |
6432 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6433 | ||
fe1dc5a3 MK |
6434 | /* Delete the instance if it was autocreated */ |
6435 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
6436 | bgp_delete(bgp_vrf); | |
6437 | ||
6438 | return 0; | |
6439 | } | |
6440 | ||
128ea8ab | 6441 | /* |
6442 | * Handle del of a local VNI. | |
6443 | */ | |
d62a17ae | 6444 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 6445 | { |
d62a17ae | 6446 | struct bgpevpn *vpn; |
128ea8ab | 6447 | |
d62a17ae | 6448 | /* Locate VNI hash */ |
6449 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
07b9f44d | 6450 | if (!vpn) |
d62a17ae | 6451 | return 0; |
128ea8ab | 6452 | |
d62a17ae | 6453 | /* Remove all local EVPN routes and schedule for processing (to |
6454 | * withdraw from peers). | |
6455 | */ | |
6456 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 6457 | |
021b6596 AD |
6458 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
6459 | ||
9daa5d47 | 6460 | vpn->svi_ifindex = 0; |
db0e1937 MK |
6461 | /* |
6462 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
6463 | */ | |
6464 | bgp_tip_del(bgp, &vpn->originator_ip); | |
6465 | ||
d62a17ae | 6466 | /* Clear "live" flag and see if hash needs to be freed. */ |
6467 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6468 | if (!is_vni_configured(vpn)) | |
6469 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 6470 | |
d62a17ae | 6471 | return 0; |
128ea8ab | 6472 | } |
6473 | ||
6474 | /* | |
d1911c26 | 6475 | * Handle add (or update) of a local VNI. The VNI changes we care |
6476 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 6477 | */ |
d62a17ae | 6478 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
6479 | struct in_addr originator_ip, |
6480 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
6481 | struct in_addr mcast_grp, |
6482 | ifindex_t svi_ifindex) | |
d62a17ae | 6483 | { |
6484 | struct bgpevpn *vpn; | |
6485 | struct prefix_evpn p; | |
6486 | ||
d62a17ae | 6487 | /* Lookup VNI. If present and no change, exit. */ |
6488 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 6489 | if (vpn) { |
29c53922 | 6490 | |
d1911c26 | 6491 | if (is_vni_live(vpn) |
6492 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 6493 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
6494 | && vpn->tenant_vrf_id == tenant_vrf_id |
6495 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 6496 | /* Probably some other param has changed that we don't |
6497 | * care about. */ | |
6498 | return 0; | |
6499 | ||
76d07c7a AK |
6500 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
6501 | ||
021b6596 AD |
6502 | if (vpn->svi_ifindex != svi_ifindex) { |
6503 | ||
6504 | /* | |
6505 | * Unresolve all the gateway IP nexthops for this VNI | |
6506 | * for old SVI | |
6507 | */ | |
dc6cef73 AD |
6508 | bgp_evpn_remote_ip_hash_iterate( |
6509 | vpn, | |
6510 | (void (*)(struct hash_bucket *, void *)) | |
6511 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
6512 | vpn); |
6513 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
6514 | vpn->svi_ifindex = svi_ifindex; | |
6515 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6516 | ||
6517 | /* | |
6518 | * Resolve all the gateway IP nexthops for this VNI | |
6519 | * for new SVI | |
6520 | */ | |
dc6cef73 AD |
6521 | bgp_evpn_remote_ip_hash_iterate( |
6522 | vpn, | |
6523 | (void (*)(struct hash_bucket *, void *)) | |
6524 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
6525 | vpn); |
6526 | } | |
9daa5d47 | 6527 | |
d1911c26 | 6528 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 6529 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
6530 | |
6531 | /* | |
6532 | * Unresolve all the gateway IP nexthops for this VNI | |
6533 | * in old tenant vrf | |
6534 | */ | |
dc6cef73 AD |
6535 | bgp_evpn_remote_ip_hash_iterate( |
6536 | vpn, | |
6537 | (void (*)(struct hash_bucket *, void *)) | |
6538 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 6539 | vpn); |
6a8657d0 | 6540 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 6541 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 6542 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
6543 | |
6544 | /* | |
6545 | * Resolve all the gateway IP nexthops for this VNI | |
6546 | * in new tenant vrf | |
6547 | */ | |
dc6cef73 AD |
6548 | bgp_evpn_remote_ip_hash_iterate( |
6549 | vpn, | |
6550 | (void (*)(struct hash_bucket *, void *)) | |
6551 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 6552 | vpn); |
6a8657d0 | 6553 | } |
29c53922 | 6554 | |
d1911c26 | 6555 | /* If tunnel endpoint IP has changed, update (and delete prior |
6556 | * type-3 route, if needed.) | |
6557 | */ | |
4dabdde3 | 6558 | handle_tunnel_ip_change(bgp, vpn, originator_ip); |
d62a17ae | 6559 | |
d1911c26 | 6560 | /* Update all routes with new endpoint IP and/or export RT |
6561 | * for VRFs | |
6562 | */ | |
6563 | if (is_vni_live(vpn)) | |
6564 | update_routes_for_vni(bgp, vpn); | |
879e43a5 | 6565 | } else { |
6566 | /* Create or update as appropriate. */ | |
76d07c7a | 6567 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
879e43a5 | 6568 | mcast_grp, svi_ifindex); |
d62a17ae | 6569 | } |
6570 | ||
db0e1937 | 6571 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6572 | if (is_vni_live(vpn)) |
6573 | return 0; | |
6574 | ||
d62a17ae | 6575 | /* Mark as "live" */ |
6576 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6577 | ||
db0e1937 | 6578 | /* tunnel is now active, add tunnel-ip to db */ |
826c3f6d TA |
6579 | if (bgp_tip_add(bgp, &originator_ip)) |
6580 | /* The originator_ip was not already present in the | |
6581 | * bgp martian next-hop table as a tunnel-ip, so we | |
6582 | * need to go back and filter routes matching the new | |
6583 | * martian next-hop. | |
6584 | */ | |
6585 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
db0e1937 | 6586 | |
fd069644 DS |
6587 | /* |
6588 | * Create EVPN type-3 route and schedule for processing. | |
6589 | * | |
6590 | * RT-3 only if doing head-end replication | |
6591 | */ | |
833b8a50 AK |
6592 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6593 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 6594 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 6595 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
6596 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
6597 | "%u: Type3 route creation failure for VNI %u", | |
6598 | bgp->vrf_id, vni); | |
6599 | return -1; | |
6600 | } | |
d62a17ae | 6601 | } |
6602 | ||
6603 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6604 | * VNI, | |
6605 | * install them. | |
6606 | */ | |
6607 | install_routes_for_vni(bgp, vpn); | |
6608 | ||
d7d97010 MK |
6609 | /* If we are advertising gateway mac-ip |
6610 | It needs to be conveyed again to zebra */ | |
6611 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6612 | ||
df070e6f CS |
6613 | /* advertise svi mac-ip knob to zebra */ |
6614 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6615 | ||
d62a17ae | 6616 | return 0; |
b18825eb | 6617 | } |
14c1a7bf | 6618 | |
fd069644 DS |
6619 | /* |
6620 | * Handle change in setting for BUM handling. The supported values | |
6621 | * are head-end replication and dropping all BUM packets. Any change | |
6622 | * should be registered with zebra. Also, if doing head-end replication, | |
6623 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6624 | * to be dropped, the RT-3s must be withdrawn. | |
6625 | */ | |
6626 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6627 | { | |
6628 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6629 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6630 | "Flooding" : "Flooding Disabled"); | |
6631 | ||
6632 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6633 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6634 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6635 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6636 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6637 | } | |
6638 | ||
7724c0a1 | 6639 | /* |
6640 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6641 | * EVPN routes from peers. | |
6642 | */ | |
d62a17ae | 6643 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6644 | { |
e3b78da8 | 6645 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6646 | void *))cleanup_vni_on_disable, |
6647 | bgp); | |
7724c0a1 | 6648 | } |
6649 | ||
14c1a7bf | 6650 | /* |
6651 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6652 | * BGP instance (default) is being freed. | |
6653 | */ | |
d62a17ae | 6654 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6655 | { |
1525e99f | 6656 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6657 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6658 | bgp); |
6659 | ||
3727e359 | 6660 | hash_clean(bgp->import_rt_hash, (void (*)(void *))hash_import_rt_free); |
1525e99f | 6661 | hash_free(bgp->import_rt_hash); |
d62a17ae | 6662 | bgp->import_rt_hash = NULL; |
1525e99f | 6663 | |
3727e359 DA |
6664 | hash_clean(bgp->vrf_import_rt_hash, |
6665 | (void (*)(void *))hash_vrf_import_rt_free); | |
1525e99f | 6666 | hash_free(bgp->vrf_import_rt_hash); |
10ebe1ab | 6667 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 6668 | |
3727e359 | 6669 | hash_clean(bgp->vni_svi_hash, (void (*)(void *))hash_evpn_free); |
021b6596 AD |
6670 | hash_free(bgp->vni_svi_hash); |
6671 | bgp->vni_svi_hash = NULL; | |
1525e99f | 6672 | hash_free(bgp->vnihash); |
d62a17ae | 6673 | bgp->vnihash = NULL; |
1525e99f | 6674 | |
6a154c88 DL |
6675 | list_delete(&bgp->vrf_import_rtl); |
6676 | list_delete(&bgp->vrf_export_rtl); | |
6677 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6678 | } |
6679 | ||
6680 | /* | |
6681 | * Initialization for EVPN | |
6682 | * Create | |
6683 | * VNI hash table | |
6684 | * hash for RT to VNI | |
14c1a7bf | 6685 | */ |
d62a17ae | 6686 | void bgp_evpn_init(struct bgp *bgp) |
6687 | { | |
6688 | bgp->vnihash = | |
6689 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
6690 | bgp->vni_svi_hash = |
6691 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
6692 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 6693 | bgp->import_rt_hash = |
6694 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6695 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6696 | bgp->vrf_import_rt_hash = |
6697 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6698 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6699 | bgp->vrf_import_rtl = list_new(); |
6700 | bgp->vrf_import_rtl->cmp = | |
ca337b46 SW |
6701 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6702 | bgp->vrf_import_rtl->del = evpn_vrf_rt_del; | |
c581d8b0 MK |
6703 | bgp->vrf_export_rtl = list_new(); |
6704 | bgp->vrf_export_rtl->cmp = | |
ca337b46 SW |
6705 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6706 | bgp->vrf_export_rtl->del = evpn_vrf_rt_del; | |
6a8657d0 | 6707 | bgp->l2vnis = list_new(); |
64465785 | 6708 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6709 | /* By default Duplicate Address Dection is enabled. |
6710 | * Max-moves (N) 5, detection time (M) 180 | |
6711 | * default action is warning-only | |
6712 | * freeze action permanently freezes address, | |
6713 | * and freeze time (auto-recovery) is disabled. | |
6714 | */ | |
6715 | if (bgp->evpn_info) { | |
6716 | bgp->evpn_info->dup_addr_detect = true; | |
6717 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6718 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6719 | bgp->evpn_info->dad_freeze = false; | |
6720 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6721 | /* Initialize zebra vxlan */ |
6722 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6723 | /* Enable PIP feature by default for bgp vrf instance */ |
6724 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6725 | struct bgp *bgp_default; | |
6726 | ||
6727 | bgp->evpn_info->advertise_pip = true; | |
6728 | bgp_default = bgp_get_default(); | |
6729 | if (bgp_default) | |
6730 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6731 | } | |
85c8d83b | 6732 | } |
fd069644 DS |
6733 | |
6734 | /* Default BUM handling is to do head-end replication. */ | |
6735 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6736 | |
6737 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6738 | } |
10ebe1ab MK |
6739 | |
6740 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6741 | { | |
6742 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6743 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6744 | } |
44c69747 LK |
6745 | |
6746 | /* | |
6747 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6748 | */ | |
5f040085 | 6749 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6750 | { |
6751 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6752 | ||
6753 | if (!pfx || pfx->family != AF_EVPN) | |
6754 | return 0; | |
6755 | ||
6756 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6757 | return 0; | |
6758 | ||
6759 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6760 | } | |
7c312383 AD |
6761 | |
6762 | /* | |
6763 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6764 | */ | |
5a1ae2c2 | 6765 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6766 | { |
6767 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6768 | ||
6769 | /* | |
e11329ca | 6770 | * EVPN routes should be marked as valid only if the nexthop is |
6771 | * reachable. Only if this happens, the route should be imported | |
6772 | * (into VNI or VRF routing tables) and/or advertised. | |
fff7545a | 6773 | * Note: This is currently applied for EVPN type-1, type-2, |
6774 | * type-3, type-4 and type-5 routes. | |
6775 | * It may be tweaked later on for other routes, or | |
e11329ca | 6776 | * even removed completely when all routes are handled. |
7c312383 | 6777 | */ |
fa46a5cd AK |
6778 | if (pfx && pfx->family == AF_EVPN |
6779 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6780 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6781 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6782 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6783 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6784 | return true; |
6785 | ||
6786 | return false; | |
6787 | } | |
021b6596 AD |
6788 | |
6789 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6790 | { | |
6791 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6792 | struct evpn_remote_ip *ip; | |
6793 | ||
6794 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6795 | *ip = *key; | |
6796 | ip->macip_path_list = list_new(); | |
6797 | ||
6798 | return ip; | |
6799 | } | |
6800 | ||
6801 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6802 | { | |
6803 | const struct evpn_remote_ip *ip = p; | |
6804 | const struct ipaddr *addr = &ip->addr; | |
6805 | ||
6806 | if (IS_IPADDR_V4(addr)) | |
6807 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6808 | ||
6809 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6810 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6811 | } | |
6812 | ||
6813 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6814 | { | |
6815 | const struct evpn_remote_ip *ip1 = p1; | |
6816 | const struct evpn_remote_ip *ip2 = p2; | |
6817 | ||
761cc919 | 6818 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6819 | } |
6820 | ||
6821 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6822 | { | |
dc6cef73 AD |
6823 | if (!evpn_resolve_overlay_index()) |
6824 | return; | |
6825 | ||
021b6596 AD |
6826 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6827 | bgp_evpn_remote_ip_hash_cmp, | |
6828 | "BGP EVPN remote IP hash"); | |
6829 | } | |
6830 | ||
6831 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6832 | { | |
6833 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6834 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6835 | ||
6836 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6837 | ||
6838 | list_delete(&ip->macip_path_list); | |
6839 | ||
6840 | hash_release(vpn->remote_ip_hash, ip); | |
6841 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6842 | } | |
6843 | ||
6844 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6845 | { | |
dc6cef73 | 6846 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6847 | return; |
6848 | ||
6849 | hash_iterate(vpn->remote_ip_hash, | |
6850 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6851 | vpn); | |
6852 | ||
6853 | hash_free(vpn->remote_ip_hash); | |
6854 | vpn->remote_ip_hash = NULL; | |
6855 | } | |
6856 | ||
6857 | /* Add a remote MAC/IP route to hash table */ | |
6858 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6859 | struct bgp_path_info *pi) | |
6860 | { | |
6861 | struct evpn_remote_ip tmp; | |
6862 | struct evpn_remote_ip *ip; | |
6863 | struct prefix_evpn *evp; | |
6864 | ||
dc6cef73 AD |
6865 | if (!evpn_resolve_overlay_index()) |
6866 | return; | |
6867 | ||
6868 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6869 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6870 | return; | |
6871 | ||
021b6596 AD |
6872 | evp = (struct prefix_evpn *)&pi->net->p; |
6873 | ||
6874 | if (evp->family != AF_EVPN | |
6875 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6876 | || is_evpn_prefix_ipaddr_none(evp)) | |
6877 | return; | |
6878 | ||
6879 | tmp.addr = evp->prefix.macip_addr.ip; | |
6880 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6881 | if (ip) { | |
6882 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6883 | return; | |
6884 | (void)listnode_add(ip->macip_path_list, pi); | |
6885 | return; | |
6886 | } | |
6887 | ||
6888 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
021b6596 AD |
6889 | (void)listnode_add(ip->macip_path_list, pi); |
6890 | ||
6891 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6892 | } | |
6893 | ||
6894 | /* Delete a remote MAC/IP route from hash table */ | |
6895 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6896 | struct bgp_path_info *pi) | |
6897 | { | |
6898 | struct evpn_remote_ip tmp; | |
6899 | struct evpn_remote_ip *ip; | |
6900 | struct prefix_evpn *evp; | |
6901 | ||
dc6cef73 AD |
6902 | if (!evpn_resolve_overlay_index()) |
6903 | return; | |
6904 | ||
021b6596 AD |
6905 | evp = (struct prefix_evpn *)&pi->net->p; |
6906 | ||
6907 | if (evp->family != AF_EVPN | |
6908 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6909 | || is_evpn_prefix_ipaddr_none(evp)) | |
6910 | return; | |
6911 | ||
6912 | tmp.addr = evp->prefix.macip_addr.ip; | |
6913 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6914 | if (ip == NULL) | |
6915 | return; | |
6916 | ||
6917 | listnode_delete(ip->macip_path_list, pi); | |
6918 | ||
6919 | if (ip->macip_path_list->count == 0) { | |
6920 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6921 | hash_release(vpn->remote_ip_hash, ip); | |
889360dc | 6922 | list_delete(&ip->macip_path_list); |
021b6596 AD |
6923 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); |
6924 | } | |
6925 | } | |
6926 | ||
dc6cef73 AD |
6927 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6928 | void (*func)(struct hash_bucket *, | |
6929 | void *), | |
6930 | void *arg) | |
6931 | { | |
6932 | if (!evpn_resolve_overlay_index()) | |
6933 | return; | |
6934 | ||
6935 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6936 | } | |
6937 | ||
021b6596 AD |
6938 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6939 | { | |
6940 | char buf[INET6_ADDRSTRLEN]; | |
021b6596 AD |
6941 | struct listnode *node = NULL; |
6942 | struct bgp_path_info *pi = NULL; | |
6943 | struct vty *vty = (struct vty *)args; | |
6944 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6945 | ||
6946 | vty_out(vty, " Remote IP: %s\n", | |
6947 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6948 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
511211bf DA |
6949 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) |
6950 | vty_out(vty, " %pFX\n", &pi->net->p); | |
021b6596 AD |
6951 | } |
6952 | ||
6953 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6954 | { | |
6955 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6956 | struct vty *vty = (struct vty *)args; | |
6957 | ||
6958 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6959 | bgp_evpn_remote_ip_hash_iterate( |
6960 | vpn, | |
021b6596 AD |
6961 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6962 | vty); | |
6963 | vty_out(vty, "\n"); | |
6964 | } | |
6965 | ||
6966 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6967 | void *args) | |
6968 | { | |
6969 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6970 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6971 | ||
6972 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6973 | } | |
6974 | ||
6975 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6976 | void *args) | |
6977 | { | |
6978 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6979 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6980 | ||
6981 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6982 | } | |
6983 | ||
6984 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6985 | { | |
6986 | const struct bgpevpn *vpn = p; | |
6987 | ||
6988 | return jhash_1word(vpn->svi_ifindex, 0); | |
6989 | } | |
6990 | ||
6991 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6992 | { | |
6993 | const struct bgpevpn *vpn1 = p1; | |
6994 | const struct bgpevpn *vpn2 = p2; | |
6995 | ||
6996 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6997 | } | |
6998 | ||
6999 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
7000 | ifindex_t svi) | |
7001 | { | |
7002 | struct bgpevpn *vpn; | |
7003 | struct bgpevpn tmp; | |
7004 | ||
6006b807 | 7005 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
7006 | tmp.svi_ifindex = svi; |
7007 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
7008 | return vpn; | |
7009 | } | |
7010 | ||
7011 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
7012 | { | |
7013 | if (vpn->svi_ifindex == 0) | |
7014 | return; | |
7015 | ||
8e3aae66 | 7016 | (void)hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); |
021b6596 AD |
7017 | } |
7018 | ||
7019 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
7020 | struct bgpevpn *vpn) | |
7021 | { | |
7022 | if (vpn->svi_ifindex == 0) | |
7023 | return; | |
7024 | ||
7025 | hash_release(bgp->vni_svi_hash, vpn); | |
7026 | } | |
7027 | ||
7028 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
7029 | { | |
7030 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
7031 | struct vty *vty = (struct vty *)args; | |
7032 | ||
7033 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
7034 | } | |
7035 | ||
7036 | /* | |
7037 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
7038 | * gateway IP overlay index. | |
7039 | * This function returns true if there is a remote MAC/IP route for the gateway | |
7040 | * IP in the EVI of the nexthop SVI. | |
7041 | */ | |
7042 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
7043 | { | |
7044 | struct bgp *bgp_evpn = NULL; | |
7045 | struct bgpevpn *vpn = NULL; | |
7046 | struct evpn_remote_ip tmp; | |
7047 | struct prefix *p; | |
7048 | ||
dc6cef73 AD |
7049 | if (!evpn_resolve_overlay_index()) |
7050 | return false; | |
7051 | ||
021b6596 AD |
7052 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
7053 | return false; | |
7054 | ||
7055 | bgp_evpn = bgp_get_evpn(); | |
7056 | if (!bgp_evpn) | |
7057 | return false; | |
7058 | ||
7059 | /* | |
7060 | * Gateway IP is resolved by nht over SVI interface. | |
7061 | * Use this SVI to find corresponding EVI(L2 context) | |
7062 | */ | |
7063 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
7064 | if (!vpn) | |
7065 | return false; | |
7066 | ||
7067 | if (vpn->bgp_vrf != bnc->bgp) | |
7068 | return false; | |
7069 | ||
7070 | /* | |
7071 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
7072 | * which stores all the remote IP addresses received via MAC/IP routes | |
7073 | * in this EVI | |
7074 | */ | |
6006b807 | 7075 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
7076 | |
7077 | p = &bnc->prefix; | |
7078 | if (p->family == AF_INET) { | |
7079 | tmp.addr.ipa_type = IPADDR_V4; | |
7080 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
7081 | sizeof(struct in_addr)); | |
7082 | } else if (p->family == AF_INET6) { | |
7083 | tmp.addr.ipa_type = IPADDR_V6; | |
7084 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
7085 | sizeof(struct in6_addr)); | |
7086 | } else | |
7087 | return false; | |
7088 | ||
7089 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
7090 | return false; | |
7091 | ||
7092 | return true; | |
7093 | } | |
7094 | ||
7095 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
7096 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
7097 | struct ipaddr *addr, | |
7098 | bool resolve) | |
7099 | { | |
7100 | afi_t afi; | |
7101 | struct prefix p; | |
7102 | struct bgp_nexthop_cache *bnc; | |
7103 | struct bgp_nexthop_cache_head *tree = NULL; | |
7104 | ||
7105 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
7106 | return; | |
7107 | ||
6006b807 | 7108 | memset(&p, 0, sizeof(p)); |
021b6596 AD |
7109 | |
7110 | if (addr->ipa_type == IPADDR_V4) { | |
7111 | afi = AFI_IP; | |
7112 | p.family = AF_INET; | |
7113 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
7114 | sizeof(struct in_addr)); | |
7115 | p.prefixlen = IPV4_MAX_BITLEN; | |
7116 | } else if (addr->ipa_type == IPADDR_V6) { | |
7117 | afi = AFI_IP6; | |
7118 | p.family = AF_INET6; | |
7119 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
7120 | sizeof(struct in6_addr)); | |
7121 | p.prefixlen = IPV6_MAX_BITLEN; | |
7122 | } else | |
7123 | return; | |
7124 | ||
7125 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
35aae5c9 | 7126 | bnc = bnc_find(tree, &p, 0, 0); |
021b6596 AD |
7127 | |
7128 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
7129 | return; | |
7130 | ||
7131 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
7132 | return; | |
7133 | ||
511211bf DA |
7134 | if (BGP_DEBUG(nht, NHT)) |
7135 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %pFX", | |
021b6596 | 7136 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, |
511211bf DA |
7137 | vpn->vni, (resolve ? "add" : "delete"), |
7138 | &bnc->prefix); | |
021b6596 AD |
7139 | |
7140 | /* | |
7141 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
7142 | * Set nexthop as valid only if it is already L3 reachable | |
7143 | */ | |
7144 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
7145 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7146 | bnc->flags |= BGP_NEXTHOP_VALID; | |
7147 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7148 | evaluate_paths(bnc); | |
7149 | } | |
7150 | ||
7151 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
7152 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
7153 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
7154 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7155 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7156 | evaluate_paths(bnc); | |
7157 | } | |
7158 | } | |
7159 | ||
dc6cef73 AD |
7160 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
7161 | void *arg) | |
7162 | { | |
7163 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7164 | struct bgp_dest *dest; | |
7165 | struct bgp_path_info *pi; | |
7166 | ||
7167 | bgp_evpn_remote_ip_hash_init(vpn); | |
7168 | ||
852d9f97 | 7169 | for (dest = bgp_table_top(vpn->ip_table); dest; |
dc6cef73 AD |
7170 | dest = bgp_route_next(dest)) |
7171 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
7172 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
7173 | } | |
7174 | ||
7175 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
7176 | void *arg) | |
7177 | { | |
7178 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7179 | ||
7180 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
7181 | } |