]>
Commit | Line | Data |
---|---|---|
acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
7ef5a232 | 2 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 3 | * Copyright (C) 2016 6WIND |
128ea8ab | 4 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 5 | */ |
7ef5a232 | 6 | |
7ef5a232 PG |
7 | #include <zebra.h> |
8 | ||
9 | #include "command.h" | |
10 | #include "filter.h" | |
11 | #include "prefix.h" | |
12 | #include "log.h" | |
13 | #include "memory.h" | |
14 | #include "stream.h" | |
14c1a7bf | 15 | #include "hash.h" |
16 | #include "jhash.h" | |
128ea8ab | 17 | #include "zclient.h" |
7ef5a232 | 18 | |
23d0a753 DA |
19 | #include "lib/printfrr.h" |
20 | ||
7ef5a232 PG |
21 | #include "bgpd/bgp_attr_evpn.h" |
22 | #include "bgpd/bgpd.h" | |
23 | #include "bgpd/bgp_table.h" | |
24 | #include "bgpd/bgp_route.h" | |
25 | #include "bgpd/bgp_attr.h" | |
26 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 27 | #include "bgpd/bgp_label.h" |
7ef5a232 | 28 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 29 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 30 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 31 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 32 | #include "bgpd/bgp_encap_types.h" |
33 | #include "bgpd/bgp_debug.h" | |
14454c9f | 34 | #include "bgpd/bgp_errors.h" |
128ea8ab | 35 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 36 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 37 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 38 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 39 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 40 | #include "bgpd/bgp_vty.h" |
a2299aba | 41 | #include "bgpd/bgp_nht.h" |
23aa35ad | 42 | #include "bgpd/bgp_trace.h" |
742341e1 | 43 | #include "bgpd/bgp_mpath.h" |
128ea8ab | 44 | |
45 | /* | |
46 | * Definitions and external declarations. | |
47 | */ | |
96244aca DL |
48 | DEFINE_QOBJ_TYPE(bgpevpn); |
49 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 50 | |
ca337b46 | 51 | DEFINE_MTYPE_STATIC(BGPD, VRF_ROUTE_TARGET, "L3 Route Target"); |
128ea8ab | 52 | |
53 | /* | |
54 | * Static function declarations | |
55 | */ | |
021b6596 AD |
56 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *evpn); |
57 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *evpn); | |
58 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
59 | struct bgp_path_info *pi); | |
60 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
61 | struct bgp_path_info *pi); | |
dc6cef73 AD |
62 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
63 | void (*func)(struct hash_bucket *, | |
64 | void *), | |
65 | void *arg); | |
021b6596 AD |
66 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn); |
67 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
68 | struct bgpevpn *vpn); | |
69 | static unsigned int vni_svi_hash_key_make(const void *p); | |
70 | static bool vni_svi_hash_cmp(const void *p1, const void *p2); | |
71 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
72 | struct ipaddr *addr, | |
73 | bool resolve); | |
74 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
75 | void *args); | |
76 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
77 | void *args); | |
9c7edc03 | 78 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 79 | |
80 | /* | |
81 | * Private functions. | |
82 | */ | |
83 | ||
84 | /* | |
85 | * Make vni hash key. | |
86 | */ | |
d8b87afe | 87 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 88 | { |
d8b87afe | 89 | const struct bgpevpn *vpn = p; |
d62a17ae | 90 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 91 | } |
92 | ||
93 | /* | |
94 | * Comparison function for vni hash | |
95 | */ | |
74df8d6d | 96 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 97 | { |
d62a17ae | 98 | const struct bgpevpn *vpn1 = p1; |
99 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 100 | |
ce40c627 | 101 | return vpn1->vni == vpn2->vni; |
14c1a7bf | 102 | } |
103 | ||
c44ab6f1 | 104 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
105 | { |
106 | const struct bgpevpn *vpn1 = p1; | |
107 | const struct bgpevpn *vpn2 = p2; | |
108 | ||
109 | return vpn1->vni - vpn2->vni; | |
110 | } | |
111 | ||
10ebe1ab MK |
112 | /* |
113 | * Make vrf import route target hash key. | |
114 | */ | |
d8b87afe | 115 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 116 | { |
d8b87afe QY |
117 | const struct vrf_irt_node *irt = p; |
118 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
119 | |
120 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
121 | } |
122 | ||
123 | /* | |
124 | * Comparison function for vrf import rt hash | |
125 | */ | |
74df8d6d | 126 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
127 | { |
128 | const struct vrf_irt_node *irt1 = p1; | |
129 | const struct vrf_irt_node *irt2 = p2; | |
130 | ||
10ebe1ab MK |
131 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
132 | } | |
133 | ||
134 | /* | |
f9b8094e | 135 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
136 | */ |
137 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
138 | { | |
5e53dce3 | 139 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
140 | struct vrf_irt_node *irt; |
141 | ||
5e53dce3 T |
142 | bgp_evpn = bgp_get_evpn(); |
143 | if (!bgp_evpn) { | |
e50f7cfd | 144 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 145 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
146 | return NULL; |
147 | } | |
148 | ||
149 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
150 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
151 | |
152 | irt->rt = *rt; | |
153 | irt->vrfs = list_new(); | |
154 | ||
155 | /* Add to hash */ | |
ac390ef8 | 156 | (void)hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern); |
10ebe1ab MK |
157 | |
158 | return irt; | |
159 | } | |
160 | ||
161 | /* | |
162 | * Free the vrf import rt node | |
163 | */ | |
164 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
165 | { | |
5e53dce3 | 166 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 167 | |
5e53dce3 T |
168 | bgp_evpn = bgp_get_evpn(); |
169 | if (!bgp_evpn) { | |
e50f7cfd | 170 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 171 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
172 | return; |
173 | } | |
174 | ||
5e53dce3 | 175 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 176 | list_delete(&irt->vrfs); |
10ebe1ab MK |
177 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
178 | } | |
179 | ||
3727e359 DA |
180 | static void hash_vrf_import_rt_free(struct vrf_irt_node *irt) |
181 | { | |
182 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
183 | } | |
184 | ||
10ebe1ab MK |
185 | /* |
186 | * Function to lookup Import RT node - used to map a RT to set of | |
187 | * VNIs importing routes with that RT. | |
188 | */ | |
189 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
190 | { | |
5e53dce3 | 191 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
192 | struct vrf_irt_node *irt; |
193 | struct vrf_irt_node tmp; | |
194 | ||
5e53dce3 T |
195 | bgp_evpn = bgp_get_evpn(); |
196 | if (!bgp_evpn) { | |
f9b8094e T |
197 | flog_err( |
198 | EC_BGP_NO_DFLT, | |
199 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
200 | return NULL; |
201 | } | |
202 | ||
6006b807 | 203 | memset(&tmp, 0, sizeof(tmp)); |
10ebe1ab | 204 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
5e53dce3 | 205 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
206 | return irt; |
207 | } | |
208 | ||
209 | /* | |
210 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
211 | */ | |
996c9314 | 212 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
213 | { |
214 | struct listnode *node = NULL, *nnode = NULL; | |
215 | struct bgp *tmp_bgp_vrf = NULL; | |
216 | ||
217 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
218 | if (tmp_bgp_vrf == bgp_vrf) | |
219 | return 1; | |
220 | } | |
221 | return 0; | |
222 | } | |
223 | ||
14c1a7bf | 224 | /* |
225 | * Make import route target hash key. | |
226 | */ | |
d8b87afe | 227 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 228 | { |
d8b87afe QY |
229 | const struct irt_node *irt = p; |
230 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
231 | |
232 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 233 | } |
234 | ||
235 | /* | |
236 | * Comparison function for import rt hash | |
237 | */ | |
74df8d6d | 238 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 239 | { |
d62a17ae | 240 | const struct irt_node *irt1 = p1; |
241 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 242 | |
d62a17ae | 243 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 244 | } |
245 | ||
7724c0a1 | 246 | /* |
128ea8ab | 247 | * Create a new import_rt |
248 | */ | |
d62a17ae | 249 | static struct irt_node *import_rt_new(struct bgp *bgp, |
250 | struct ecommunity_val *rt) | |
128ea8ab | 251 | { |
d62a17ae | 252 | struct irt_node *irt; |
128ea8ab | 253 | |
d62a17ae | 254 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 255 | |
d62a17ae | 256 | irt->rt = *rt; |
257 | irt->vnis = list_new(); | |
128ea8ab | 258 | |
d62a17ae | 259 | /* Add to hash */ |
ac390ef8 | 260 | (void)hash_get(bgp->import_rt_hash, irt, hash_alloc_intern); |
128ea8ab | 261 | |
d62a17ae | 262 | return irt; |
128ea8ab | 263 | } |
264 | ||
265 | /* | |
266 | * Free the import rt node | |
7724c0a1 | 267 | */ |
d62a17ae | 268 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 269 | { |
d62a17ae | 270 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 271 | list_delete(&irt->vnis); |
d62a17ae | 272 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 273 | } |
274 | ||
3727e359 DA |
275 | static void hash_import_rt_free(struct irt_node *irt) |
276 | { | |
277 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
278 | } | |
279 | ||
14c1a7bf | 280 | /* |
128ea8ab | 281 | * Function to lookup Import RT node - used to map a RT to set of |
282 | * VNIs importing routes with that RT. | |
283 | */ | |
d62a17ae | 284 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
285 | struct ecommunity_val *rt) | |
128ea8ab | 286 | { |
d62a17ae | 287 | struct irt_node *irt; |
288 | struct irt_node tmp; | |
128ea8ab | 289 | |
6006b807 | 290 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 291 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
292 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
293 | return irt; | |
128ea8ab | 294 | } |
295 | ||
296 | /* | |
297 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
298 | */ | |
d62a17ae | 299 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 300 | { |
d62a17ae | 301 | struct listnode *node, *nnode; |
302 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 303 | |
d62a17ae | 304 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
305 | if (tmp_vpn == vpn) | |
306 | return 1; | |
307 | } | |
128ea8ab | 308 | |
d62a17ae | 309 | return 0; |
128ea8ab | 310 | } |
311 | ||
312 | /* | |
313 | * Compare Route Targets. | |
314 | */ | |
f4a5218d AK |
315 | int bgp_evpn_route_target_cmp(struct ecommunity *ecom1, |
316 | struct ecommunity *ecom2) | |
128ea8ab | 317 | { |
d62a17ae | 318 | if (ecom1 && !ecom2) |
319 | return -1; | |
128ea8ab | 320 | |
d62a17ae | 321 | if (!ecom1 && ecom2) |
322 | return 1; | |
128ea8ab | 323 | |
d62a17ae | 324 | if (!ecom1 && !ecom2) |
325 | return 0; | |
128ea8ab | 326 | |
d62a17ae | 327 | if (ecom1->str && !ecom2->str) |
328 | return -1; | |
128ea8ab | 329 | |
d62a17ae | 330 | if (!ecom1->str && ecom2->str) |
331 | return 1; | |
128ea8ab | 332 | |
d62a17ae | 333 | if (!ecom1->str && !ecom2->str) |
334 | return 0; | |
128ea8ab | 335 | |
d62a17ae | 336 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 337 | } |
338 | ||
ca337b46 SW |
339 | /* |
340 | * Compare L3 Route Targets. | |
341 | */ | |
342 | static int evpn_vrf_route_target_cmp(struct vrf_route_target *rt1, | |
343 | struct vrf_route_target *rt2) | |
344 | { | |
345 | return bgp_evpn_route_target_cmp(rt1->ecom, rt2->ecom); | |
346 | } | |
347 | ||
f4a5218d | 348 | void bgp_evpn_xxport_delete_ecomm(void *val) |
987d8198 DS |
349 | { |
350 | struct ecommunity *ecomm = val; | |
351 | ecommunity_free(&ecomm); | |
352 | } | |
353 | ||
ca337b46 SW |
354 | /* |
355 | * Delete l3 Route Target. | |
356 | */ | |
357 | static void evpn_vrf_rt_del(void *val) | |
358 | { | |
359 | struct vrf_route_target *l3rt = val; | |
360 | ||
361 | ecommunity_free(&l3rt->ecom); | |
362 | ||
363 | XFREE(MTYPE_VRF_ROUTE_TARGET, l3rt); | |
364 | } | |
365 | ||
366 | /* | |
367 | * Allocate a new l3 Route Target. | |
368 | */ | |
369 | static struct vrf_route_target *evpn_vrf_rt_new(struct ecommunity *ecom) | |
370 | { | |
371 | struct vrf_route_target *l3rt; | |
372 | ||
373 | l3rt = XCALLOC(MTYPE_VRF_ROUTE_TARGET, sizeof(struct vrf_route_target)); | |
374 | ||
375 | l3rt->ecom = ecom; | |
376 | ||
377 | return l3rt; | |
378 | } | |
379 | ||
128ea8ab | 380 | /* |
381 | * Mask off global-admin field of specified extended community (RT), | |
382 | * just retain the local-admin field. | |
383 | */ | |
d62a17ae | 384 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
58d8948c | 385 | const struct ecommunity_val *src) |
128ea8ab | 386 | { |
d7c0a89a | 387 | uint8_t type; |
128ea8ab | 388 | |
d62a17ae | 389 | type = src->val[0]; |
390 | dst->val[0] = 0; | |
391 | if (type == ECOMMUNITY_ENCODE_AS) { | |
392 | dst->val[2] = dst->val[3] = 0; | |
393 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
394 | || type == ECOMMUNITY_ENCODE_IP) { | |
395 | dst->val[2] = dst->val[3] = 0; | |
396 | dst->val[4] = dst->val[5] = 0; | |
397 | } | |
128ea8ab | 398 | } |
399 | ||
10ebe1ab | 400 | /* |
58d8948c SW |
401 | * Converts the RT to Ecommunity Value and adjusts masking based |
402 | * on flags set for RT. | |
10ebe1ab | 403 | */ |
58d8948c SW |
404 | static void vrf_rt2ecom_val(struct ecommunity_val *to_eval, |
405 | const struct vrf_route_target *l3rt, int iter) | |
10ebe1ab | 406 | { |
58d8948c | 407 | const struct ecommunity_val *eval; |
10ebe1ab | 408 | |
58d8948c SW |
409 | eval = (const struct ecommunity_val *)(l3rt->ecom->val + |
410 | (iter * ECOMMUNITY_SIZE)); | |
411 | /* If using "automatic" or "wildcard *" RT, | |
10ebe1ab MK |
412 | * we only care about the local-admin sub-field. |
413 | * This is to facilitate using L3VNI(VRF-VNI) | |
58d8948c SW |
414 | * as the RT for EBGP peering too and simplify |
415 | * configurations by allowing any ASN via '*'. | |
10ebe1ab | 416 | */ |
58d8948c | 417 | memcpy(to_eval, eval, ECOMMUNITY_SIZE); |
10ebe1ab | 418 | |
58d8948c SW |
419 | if (CHECK_FLAG(l3rt->flags, BGP_VRF_RT_AUTO) || |
420 | CHECK_FLAG(l3rt->flags, BGP_VRF_RT_WILD)) | |
421 | mask_ecom_global_admin(to_eval, eval); | |
422 | } | |
10ebe1ab | 423 | |
58d8948c SW |
424 | /* |
425 | * Map one RT to specified VRF. | |
426 | * bgp_vrf = BGP vrf instance | |
427 | */ | |
428 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct vrf_route_target *l3rt) | |
429 | { | |
430 | uint32_t i = 0; | |
431 | ||
432 | for (i = 0; i < l3rt->ecom->size; i++) { | |
433 | struct vrf_irt_node *irt = NULL; | |
434 | struct ecommunity_val eval_tmp; | |
435 | ||
436 | /* Adjust masking for value */ | |
437 | vrf_rt2ecom_val(&eval_tmp, l3rt, i); | |
10ebe1ab | 438 | |
58d8948c | 439 | irt = lookup_vrf_import_rt(&eval_tmp); |
10ebe1ab | 440 | |
58d8948c SW |
441 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
442 | return; /* Already mapped. */ | |
443 | ||
444 | if (!irt) | |
445 | irt = vrf_import_rt_new(&eval_tmp); | |
446 | ||
447 | /* Add VRF to the list for this RT. */ | |
448 | listnode_add(irt->vrfs, bgp_vrf); | |
449 | } | |
10ebe1ab MK |
450 | } |
451 | ||
452 | /* | |
453 | * Unmap specified VRF from specified RT. If there are no other | |
454 | * VRFs for this RT, then the RT hash is deleted. | |
455 | * bgp_vrf: BGP VRF specific instance | |
456 | */ | |
58d8948c SW |
457 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, |
458 | struct vrf_route_target *l3rt) | |
10ebe1ab | 459 | { |
58d8948c SW |
460 | uint32_t i; |
461 | ||
462 | for (i = 0; i < l3rt->ecom->size; i++) { | |
463 | struct vrf_irt_node *irt; | |
464 | struct ecommunity_val eval_tmp; | |
465 | ||
466 | /* Adjust masking for value */ | |
467 | vrf_rt2ecom_val(&eval_tmp, l3rt, i); | |
468 | ||
469 | irt = lookup_vrf_import_rt(&eval_tmp); | |
470 | ||
471 | if (!irt) | |
472 | return; /* Not mapped */ | |
473 | ||
474 | /* Delete VRF from list for this RT. */ | |
475 | listnode_delete(irt->vrfs, bgp_vrf); | |
476 | ||
477 | if (!listnode_head(irt->vrfs)) | |
478 | vrf_import_rt_free(irt); | |
10ebe1ab MK |
479 | } |
480 | } | |
481 | ||
128ea8ab | 482 | /* |
483 | * Map one RT to specified VNI. | |
14c1a7bf | 484 | */ |
d62a17ae | 485 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
486 | struct ecommunity_val *eval) | |
128ea8ab | 487 | { |
d62a17ae | 488 | struct irt_node *irt; |
489 | struct ecommunity_val eval_tmp; | |
128ea8ab | 490 | |
d62a17ae | 491 | /* If using "automatic" RT, we only care about the local-admin |
492 | * sub-field. | |
493 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
494 | */ | |
495 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
496 | if (!is_import_rt_configured(vpn)) | |
497 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 498 | |
d62a17ae | 499 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 500 | if (irt) |
d62a17ae | 501 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
502 | /* Already mapped. */ | |
503 | return; | |
128ea8ab | 504 | |
879e43a5 | 505 | if (!irt) |
d62a17ae | 506 | irt = import_rt_new(bgp, &eval_tmp); |
128ea8ab | 507 | |
d62a17ae | 508 | /* Add VNI to the hash list for this RT. */ |
509 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 510 | } |
511 | ||
512 | /* | |
513 | * Unmap specified VNI from specified RT. If there are no other | |
514 | * VNIs for this RT, then the RT hash is deleted. | |
515 | */ | |
d62a17ae | 516 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
517 | struct irt_node *irt) | |
14c1a7bf | 518 | { |
d62a17ae | 519 | /* Delete VNI from hash list for this RT. */ |
520 | listnode_delete(irt->vnis, vpn); | |
521 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 522 | import_rt_free(bgp, irt); |
523 | } | |
14c1a7bf | 524 | } |
525 | ||
0ca10580 | 526 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 527 | const struct prefix_evpn *p, |
0ca10580 CS |
528 | struct attr *attr, uint8_t flags) |
529 | { | |
530 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
531 | ||
532 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
533 | if (!bgp_vrf) | |
534 | return; | |
535 | ||
b96cafa3 CS |
536 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
537 | return; | |
538 | ||
539 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
540 | * in case of route is self MAC-IP, | |
541 | * advertise-pip and advertise-svi-ip features | |
542 | * are enabled. | |
543 | * Otherwise, for all host MAC-IP route's | |
27727001 | 544 | * copy anycast RMAC. |
b96cafa3 CS |
545 | */ |
546 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
547 | && bgp_vrf->evpn_info->advertise_pip && | |
548 | bgp_vrf->evpn_info->is_anycast_mac) { | |
549 | /* copy sys rmac */ | |
550 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
551 | ETH_ALEN); | |
552 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
553 | attr->mp_nexthop_global_in = | |
554 | bgp_vrf->evpn_info->pip_ip; | |
555 | } else | |
556 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 557 | } |
b96cafa3 | 558 | |
128ea8ab | 559 | /* |
560 | * Create RT extended community automatically from passed information: | |
561 | * of the form AS:VNI. | |
562 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
563 | * the need is to get a RT value that will be unique across different | |
564 | * VNIs but the same across routers (in the same AS) for a particular | |
565 | * VNI. | |
566 | */ | |
58d8948c SW |
567 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl, |
568 | bool is_l3) | |
128ea8ab | 569 | { |
d62a17ae | 570 | struct ecommunity_val eval; |
ca337b46 | 571 | struct ecommunity *ecomadd; |
58d8948c | 572 | struct ecommunity *ecom; |
ca337b46 SW |
573 | struct vrf_route_target *l3rt; |
574 | struct vrf_route_target *newrt; | |
b90d4580 CS |
575 | bool ecom_found = false; |
576 | struct listnode *node; | |
128ea8ab | 577 | |
bf1061d8 VB |
578 | if (bgp->advertise_autort_rfc8365) |
579 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 580 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 581 | |
d62a17ae | 582 | ecomadd = ecommunity_new(); |
1207a5bc | 583 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 | 584 | |
58d8948c SW |
585 | if (is_l3) { |
586 | for (ALL_LIST_ELEMENTS_RO(rtl, node, l3rt)) | |
587 | if (ecommunity_cmp(ecomadd, l3rt->ecom)) { | |
588 | ecom_found = true; | |
589 | break; | |
590 | } | |
591 | } else { | |
592 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) | |
593 | if (ecommunity_cmp(ecomadd, ecom)) { | |
594 | ecom_found = true; | |
595 | break; | |
596 | } | |
597 | } | |
b90d4580 | 598 | |
ca337b46 | 599 | if (!ecom_found) { |
58d8948c SW |
600 | if (is_l3) { |
601 | newrt = evpn_vrf_rt_new(ecomadd); | |
602 | /* Label it as autoderived */ | |
603 | SET_FLAG(newrt->flags, BGP_VRF_RT_AUTO); | |
604 | listnode_add_sort(rtl, newrt); | |
605 | } else | |
606 | listnode_add_sort(rtl, ecomadd); | |
ca337b46 | 607 | } else |
84f22ecc | 608 | ecommunity_free(&ecomadd); |
128ea8ab | 609 | } |
14c1a7bf | 610 | |
611 | /* | |
128ea8ab | 612 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
613 | * creation of a VNI. | |
614 | */ | |
d62a17ae | 615 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 616 | { |
d62a17ae | 617 | bgp_evpn_derive_auto_rd(bgp, vpn); |
618 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
619 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 620 | } |
621 | ||
1ec31309 | 622 | /* |
623 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
624 | */ | |
625 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
626 | { | |
627 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
628 | return; | |
629 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
630 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
631 | } | |
632 | ||
34c7f35f SW |
633 | /* |
634 | * Wrapper for node get in global table. | |
635 | */ | |
636 | struct bgp_dest *bgp_evpn_global_node_get(struct bgp_table *table, afi_t afi, | |
09319b4e DS |
637 | safi_t safi, |
638 | const struct prefix_evpn *evp, | |
34c7f35f SW |
639 | struct prefix_rd *prd, |
640 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
641 | { |
642 | struct prefix_evpn global_p; | |
643 | ||
644 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
645 | /* prefix in the global table doesn't include the VTEP-IP so | |
646 | * we need to create a different copy of the prefix | |
647 | */ | |
648 | evpn_type1_prefix_global_copy(&global_p, evp); | |
649 | evp = &global_p; | |
34c7f35f SW |
650 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
651 | local_pi) { | |
652 | /* | |
852d9f97 SW |
653 | * prefix in the global table needs MAC/IP, ensure they are |
654 | * present, using one's from local table's path_info. | |
34c7f35f | 655 | */ |
852d9f97 SW |
656 | if (is_evpn_prefix_ipaddr_none(evp)) { |
657 | /* VNI MAC -> Global */ | |
658 | evpn_type2_prefix_global_copy( | |
659 | &global_p, evp, NULL /* mac */, | |
660 | evpn_type2_path_info_get_ip(local_pi)); | |
661 | } else { | |
662 | /* VNI IP -> Global */ | |
663 | evpn_type2_prefix_global_copy( | |
664 | &global_p, evp, | |
665 | evpn_type2_path_info_get_mac(local_pi), | |
666 | NULL /* ip */); | |
667 | } | |
668 | ||
c44ab6f1 AK |
669 | evp = &global_p; |
670 | } | |
671 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
672 | } | |
673 | ||
34c7f35f SW |
674 | /* |
675 | * Wrapper for node lookup in global table. | |
676 | */ | |
677 | struct bgp_dest * | |
678 | bgp_evpn_global_node_lookup(struct bgp_table *table, afi_t afi, safi_t safi, | |
679 | const struct prefix_evpn *evp, | |
680 | struct prefix_rd *prd, | |
681 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
682 | { |
683 | struct prefix_evpn global_p; | |
684 | ||
685 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
686 | /* prefix in the global table doesn't include the VTEP-IP so | |
687 | * we need to create a different copy of the prefix | |
688 | */ | |
689 | evpn_type1_prefix_global_copy(&global_p, evp); | |
690 | evp = &global_p; | |
34c7f35f SW |
691 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
692 | local_pi) { | |
693 | /* | |
852d9f97 SW |
694 | * prefix in the global table needs MAC/IP, ensure they are |
695 | * present, using one's from local table's path_info. | |
34c7f35f | 696 | */ |
852d9f97 SW |
697 | if (is_evpn_prefix_ipaddr_none(evp)) { |
698 | /* VNI MAC -> Global */ | |
699 | evpn_type2_prefix_global_copy( | |
700 | &global_p, evp, NULL /* mac */, | |
701 | evpn_type2_path_info_get_ip(local_pi)); | |
702 | } else { | |
703 | /* VNI IP -> Global */ | |
704 | evpn_type2_prefix_global_copy( | |
705 | &global_p, evp, | |
706 | evpn_type2_path_info_get_mac(local_pi), | |
707 | NULL /* ip */); | |
708 | } | |
709 | ||
c44ab6f1 AK |
710 | evp = &global_p; |
711 | } | |
712 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
713 | } | |
714 | ||
34c7f35f | 715 | /* |
852d9f97 | 716 | * Wrapper for node get in VNI IP table. |
34c7f35f | 717 | */ |
852d9f97 SW |
718 | struct bgp_dest *bgp_evpn_vni_ip_node_get(struct bgp_table *const table, |
719 | const struct prefix_evpn *evp, | |
720 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
721 | { |
722 | struct prefix_evpn vni_p; | |
723 | ||
724 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
725 | /* prefix in the global table doesn't include the VTEP-IP so | |
726 | * we need to create a different copy for the VNI | |
727 | */ | |
852d9f97 SW |
728 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
729 | parent_pi->attr->nexthop); | |
34c7f35f | 730 | evp = &vni_p; |
852d9f97 SW |
731 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
732 | /* Only MAC-IP should go into this table, not mac-only */ | |
733 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
734 | ||
34c7f35f | 735 | /* |
852d9f97 | 736 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 737 | * we need to create a different copy of the prefix. |
34c7f35f | 738 | */ |
852d9f97 | 739 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
740 | evp = &vni_p; |
741 | } | |
742 | return bgp_node_get(table, (struct prefix *)evp); | |
743 | } | |
744 | ||
745 | /* | |
852d9f97 | 746 | * Wrapper for node lookup in VNI IP table. |
34c7f35f | 747 | */ |
852d9f97 SW |
748 | struct bgp_dest * |
749 | bgp_evpn_vni_ip_node_lookup(const struct bgp_table *const table, | |
750 | const struct prefix_evpn *evp, | |
751 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
752 | { |
753 | struct prefix_evpn vni_p; | |
754 | ||
755 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
756 | /* prefix in the global table doesn't include the VTEP-IP so | |
757 | * we need to create a different copy for the VNI | |
758 | */ | |
852d9f97 SW |
759 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
760 | parent_pi->attr->nexthop); | |
34c7f35f | 761 | evp = &vni_p; |
852d9f97 SW |
762 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
763 | /* Only MAC-IP should go into this table, not mac-only */ | |
764 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
765 | ||
34c7f35f | 766 | /* |
852d9f97 | 767 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 768 | * we need to create a different copy of the prefix. |
34c7f35f | 769 | */ |
852d9f97 | 770 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
771 | evp = &vni_p; |
772 | } | |
773 | return bgp_node_lookup(table, (struct prefix *)evp); | |
774 | } | |
775 | ||
852d9f97 SW |
776 | /* |
777 | * Wrapper for node get in VNI MAC table. | |
778 | */ | |
779 | struct bgp_dest * | |
780 | bgp_evpn_vni_mac_node_get(struct bgp_table *const table, | |
781 | const struct prefix_evpn *evp, | |
782 | const struct bgp_path_info *parent_pi) | |
783 | { | |
784 | struct prefix_evpn vni_p; | |
785 | ||
786 | /* Only type-2 should ever go into this table */ | |
787 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
788 | ||
789 | /* | |
790 | * prefix in the vni MAC table doesn't include IP so | |
791 | * we need to create a different copy of the prefix. | |
792 | */ | |
793 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
794 | evp = &vni_p; | |
795 | return bgp_node_get(table, (struct prefix *)evp); | |
796 | } | |
797 | ||
798 | /* | |
799 | * Wrapper for node lookup in VNI MAC table. | |
800 | */ | |
801 | struct bgp_dest * | |
802 | bgp_evpn_vni_mac_node_lookup(const struct bgp_table *const table, | |
803 | const struct prefix_evpn *evp, | |
804 | const struct bgp_path_info *parent_pi) | |
805 | { | |
806 | struct prefix_evpn vni_p; | |
807 | ||
808 | /* Only type-2 should ever go into this table */ | |
809 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
810 | ||
811 | /* | |
812 | * prefix in the vni MAC table doesn't include IP so | |
813 | * we need to create a different copy of the prefix. | |
814 | */ | |
815 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
816 | evp = &vni_p; | |
817 | return bgp_node_lookup(table, (struct prefix *)evp); | |
818 | } | |
819 | ||
820 | /* | |
821 | * Wrapper for node get in both VNI tables. | |
822 | */ | |
823 | struct bgp_dest *bgp_evpn_vni_node_get(struct bgpevpn *vpn, | |
824 | const struct prefix_evpn *p, | |
825 | const struct bgp_path_info *parent_pi) | |
826 | { | |
827 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
828 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
829 | return bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
830 | ||
831 | return bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
832 | } | |
833 | ||
834 | /* | |
835 | * Wrapper for node lookup in both VNI tables. | |
836 | */ | |
837 | struct bgp_dest *bgp_evpn_vni_node_lookup(const 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_lookup(vpn->mac_table, p, | |
844 | parent_pi); | |
845 | ||
846 | return bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
847 | } | |
848 | ||
128ea8ab | 849 | /* |
850 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 851 | */ |
d62a17ae | 852 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 853 | const struct prefix_evpn *p, |
34c7f35f | 854 | const struct ethaddr *mac, |
d62a17ae | 855 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 856 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 857 | { |
858 | struct stream *s; | |
0ffd0fb5 | 859 | uint16_t ipa_len; |
c44ab6f1 | 860 | static struct in_addr zero_remote_vtep_ip; |
90f30caa | 861 | bool esi_valid; |
d62a17ae | 862 | |
863 | /* Check socket. */ | |
864 | if (!zclient || zclient->sock < 0) | |
865 | return 0; | |
866 | ||
867 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
868 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
869 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
870 | zlog_debug( |
871 | "%s: No zebra instance to talk to, not installing remote macip", | |
872 | __func__); | |
d62a17ae | 873 | return 0; |
bb4ef1ae | 874 | } |
c44ab6f1 AK |
875 | |
876 | if (!esi) | |
877 | esi = zero_esi; | |
d62a17ae | 878 | s = zclient->obuf; |
879 | stream_reset(s); | |
880 | ||
996c9314 LB |
881 | zclient_create_header( |
882 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
883 | bgp->vrf_id); | |
d62a17ae | 884 | stream_putl(s, vpn->vni); |
34c7f35f SW |
885 | |
886 | if (mac) /* Mac Addr */ | |
887 | stream_put(s, &mac->octet, ETH_ALEN); | |
888 | else | |
889 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); | |
890 | ||
d62a17ae | 891 | /* IP address length and IP address, if any. */ |
3714a385 | 892 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 893 | stream_putw(s, 0); |
d62a17ae | 894 | else { |
3714a385 | 895 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 896 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 897 | stream_putw(s, ipa_len); |
3714a385 | 898 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 899 | } |
9c7edc03 AK |
900 | /* If the ESI is valid that becomes the nexthop; tape out the |
901 | * VTEP-IP for that case | |
c44ab6f1 | 902 | */ |
90f30caa AK |
903 | if (bgp_evpn_is_esi_valid(esi)) { |
904 | esi_valid = true; | |
c44ab6f1 | 905 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
90f30caa AK |
906 | } else { |
907 | esi_valid = false; | |
9c7edc03 | 908 | stream_put_in_addr(s, &remote_vtep_ip); |
90f30caa | 909 | } |
d62a17ae | 910 | |
ead40654 | 911 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 912 | /* Also TX the sequence number of the best route. */ |
913 | if (add) { | |
ead40654 | 914 | stream_putc(s, flags); |
f07e1c99 | 915 | stream_putl(s, seq); |
c44ab6f1 | 916 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 917 | } |
d62a17ae | 918 | |
919 | stream_putw_at(s, 0, stream_get_endp(s)); | |
920 | ||
90f30caa AK |
921 | if (bgp_debug_zebra(NULL)) { |
922 | char esi_buf[ESI_STR_LEN]; | |
923 | ||
924 | if (esi_valid) | |
925 | esi_to_str(esi, esi_buf, sizeof(esi_buf)); | |
926 | else | |
927 | snprintf(esi_buf, sizeof(esi_buf), "-"); | |
996c9314 | 928 | zlog_debug( |
90f30caa | 929 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4 esi %s", |
996c9314 | 930 | add ? "ADD" : "DEL", vpn->vni, |
852d9f97 SW |
931 | (mac ? mac : &p->prefix.macip_addr.mac), |
932 | &p->prefix.macip_addr.ip, flags, seq, &remote_vtep_ip, | |
933 | esi_buf); | |
90f30caa | 934 | } |
d62a17ae | 935 | |
23aa35ad AK |
936 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
937 | esi); | |
938 | ||
d62a17ae | 939 | return zclient_send_message(zclient); |
7ef5a232 | 940 | } |
b18825eb | 941 | |
128ea8ab | 942 | /* |
943 | * Add (update) or delete remote VTEP from zebra. | |
944 | */ | |
d62a17ae | 945 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
946 | const struct prefix_evpn *p, |
947 | int flood_control, int add) | |
128ea8ab | 948 | { |
d62a17ae | 949 | struct stream *s; |
128ea8ab | 950 | |
d62a17ae | 951 | /* Check socket. */ |
952 | if (!zclient || zclient->sock < 0) | |
953 | return 0; | |
128ea8ab | 954 | |
d62a17ae | 955 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
956 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
957 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
958 | zlog_debug( |
959 | "%s: No zebra instance to talk to, not installing remote vtep", | |
960 | __func__); | |
d62a17ae | 961 | return 0; |
bb4ef1ae | 962 | } |
128ea8ab | 963 | |
d62a17ae | 964 | s = zclient->obuf; |
965 | stream_reset(s); | |
128ea8ab | 966 | |
996c9314 LB |
967 | zclient_create_header( |
968 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
969 | bgp->vrf_id); | |
d62a17ae | 970 | stream_putl(s, vpn->vni); |
3714a385 | 971 | if (is_evpn_prefix_ipaddr_v4(p)) |
972 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
973 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 974 | flog_err( |
e50f7cfd | 975 | EC_BGP_VTEP_INVALID, |
d62a17ae | 976 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
977 | add ? "ADD" : "DEL", vpn->vni); | |
978 | return -1; | |
979 | } | |
b16dd019 | 980 | stream_putl(s, flood_control); |
128ea8ab | 981 | |
d62a17ae | 982 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 983 | |
d62a17ae | 984 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 985 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 986 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 987 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 988 | |
23aa35ad AK |
989 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
990 | ||
d62a17ae | 991 | return zclient_send_message(zclient); |
128ea8ab | 992 | } |
993 | ||
342dd0c6 | 994 | /* |
995 | * Build extended communities for EVPN prefix route. | |
996 | */ | |
997 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
998 | struct attr *attr) | |
999 | { | |
1000 | struct ecommunity ecom_encap; | |
342dd0c6 | 1001 | struct ecommunity_val eval; |
1002 | struct ecommunity_val eval_rmac; | |
1003 | bgp_encap_types tnl_type; | |
1004 | struct listnode *node, *nnode; | |
ca337b46 | 1005 | struct vrf_route_target *l3rt; |
fab92da7 | 1006 | struct ecommunity *old_ecom; |
ca337b46 | 1007 | struct ecommunity *ecom; |
342dd0c6 | 1008 | struct list *vrf_export_rtl = NULL; |
1009 | ||
1010 | /* Encap */ | |
1011 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1012 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1013 | encode_encap_extcomm(tnl_type, &eval); | |
1014 | ecom_encap.size = 1; | |
34540b0d | 1015 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1016 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 1017 | |
1018 | /* Add Encap */ | |
b53e67a3 DA |
1019 | if (bgp_attr_get_ecommunity(attr)) { |
1020 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 1021 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
1022 | if (!old_ecom->refcnt) | |
1023 | ecommunity_free(&old_ecom); | |
1024 | } else | |
1025 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 1026 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 1027 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 1028 | |
1029 | /* Add the export RTs for L3VNI/VRF */ | |
1030 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
ca337b46 | 1031 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, l3rt)) |
b53e67a3 | 1032 | bgp_attr_set_ecommunity( |
ca337b46 SW |
1033 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), |
1034 | l3rt->ecom)); | |
342dd0c6 | 1035 | |
1036 | /* add the router mac extended community */ | |
1037 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 1038 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1039 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1040 | true, true); | |
342dd0c6 | 1041 | } |
342dd0c6 | 1042 | } |
1043 | ||
128ea8ab | 1044 | /* |
1ec31309 | 1045 | * Build extended communities for EVPN route. |
1046 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
1047 | * and ENCAP extended communities are applicable for all routes. | |
1048 | * The default gateway extended community and MAC mobility (sticky) extended | |
1049 | * community are added as needed based on passed settings - only for type-2 | |
1050 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
1051 | * added, if present, based on passed settings - only for non-link-local | |
1052 | * type-2 routes. | |
128ea8ab | 1053 | */ |
7ec156a9 | 1054 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 1055 | int add_l3_ecomm) |
128ea8ab | 1056 | { |
d62a17ae | 1057 | struct ecommunity ecom_encap; |
1058 | struct ecommunity ecom_sticky; | |
ead40654 | 1059 | struct ecommunity ecom_default_gw; |
68e33151 | 1060 | struct ecommunity ecom_na; |
d62a17ae | 1061 | struct ecommunity_val eval; |
1062 | struct ecommunity_val eval_sticky; | |
ead40654 | 1063 | struct ecommunity_val eval_default_gw; |
bc59a672 | 1064 | struct ecommunity_val eval_rmac; |
68e33151 | 1065 | struct ecommunity_val eval_na; |
9c7edc03 | 1066 | bool proxy; |
68e33151 | 1067 | |
d62a17ae | 1068 | bgp_encap_types tnl_type; |
1069 | struct listnode *node, *nnode; | |
1070 | struct ecommunity *ecom; | |
ca337b46 | 1071 | struct vrf_route_target *l3rt; |
d7c0a89a | 1072 | uint32_t seqnum; |
7a3e76f1 | 1073 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 1074 | |
d62a17ae | 1075 | /* Encap */ |
1076 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1077 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1078 | encode_encap_extcomm(tnl_type, &eval); | |
1079 | ecom_encap.size = 1; | |
34540b0d | 1080 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1081 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 1082 | |
d62a17ae | 1083 | /* Add Encap */ |
b53e67a3 | 1084 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 1085 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 1086 | |
7a3e76f1 | 1087 | /* Add the export RTs for L2VNI */ |
d62a17ae | 1088 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
1089 | bgp_attr_set_ecommunity( |
1090 | attr, | |
1091 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 1092 | |
1ec31309 | 1093 | /* Add the export RTs for L3VNI if told to - caller determines |
1094 | * when this should be done. | |
523cafc4 | 1095 | */ |
1ec31309 | 1096 | if (add_l3_ecomm) { |
7ec156a9 MK |
1097 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
1098 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
1099 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
ca337b46 | 1100 | l3rt)) |
b53e67a3 DA |
1101 | bgp_attr_set_ecommunity( |
1102 | attr, | |
1103 | ecommunity_merge( | |
1104 | bgp_attr_get_ecommunity(attr), | |
ca337b46 | 1105 | l3rt->ecom)); |
7ec156a9 | 1106 | } |
f1f8b53c | 1107 | } |
7a3e76f1 | 1108 | |
1ec31309 | 1109 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 1110 | if (attr->sticky) { |
1111 | seqnum = 0; | |
1112 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
1113 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
1114 | ecom_sticky.size = 1; | |
34540b0d | 1115 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1116 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
1117 | bgp_attr_set_ecommunity( |
1118 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1119 | &ecom_sticky)); | |
d62a17ae | 1120 | } |
c85c03c7 | 1121 | |
1ec31309 | 1122 | /* Add RMAC, if told to. */ |
1123 | if (add_l3_ecomm) { | |
bc59a672 | 1124 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1125 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1126 | true, true); | |
bc59a672 MK |
1127 | } |
1128 | ||
1ec31309 | 1129 | /* Add default gateway, if needed. */ |
ead40654 MK |
1130 | if (attr->default_gw) { |
1131 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
1132 | encode_default_gw_extcomm(&eval_default_gw); | |
1133 | ecom_default_gw.size = 1; | |
34540b0d | 1134 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 1135 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
1136 | bgp_attr_set_ecommunity( |
1137 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1138 | &ecom_default_gw)); | |
ead40654 MK |
1139 | } |
1140 | ||
9c7edc03 AK |
1141 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
1142 | if (attr->router_flag || proxy) { | |
68e33151 | 1143 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 1144 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 1145 | ecom_na.size = 1; |
34540b0d | 1146 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 1147 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
1148 | bgp_attr_set_ecommunity( |
1149 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1150 | &ecom_na)); | |
68e33151 | 1151 | } |
128ea8ab | 1152 | } |
1153 | ||
1154 | /* | |
1155 | * Add MAC mobility extended community to attribute. | |
1156 | */ | |
d7c0a89a | 1157 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 1158 | { |
1159 | struct ecommunity ecom_tmp; | |
1160 | struct ecommunity_val eval; | |
d7c0a89a | 1161 | uint8_t *ecom_val_ptr; |
f6e07e1b | 1162 | uint32_t i; |
d7c0a89a | 1163 | uint8_t *pnt; |
d62a17ae | 1164 | int type = 0; |
1165 | int sub_type = 0; | |
b53e67a3 | 1166 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 1167 | |
1168 | /* Build MM */ | |
1169 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
1170 | ||
1171 | /* Find current MM ecommunity */ | |
421bb26a | 1172 | ecom_val_ptr = NULL; |
d62a17ae | 1173 | |
b53e67a3 DA |
1174 | if (ecomm) { |
1175 | for (i = 0; i < ecomm->size; i++) { | |
1176 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 1177 | type = *pnt++; |
1178 | sub_type = *pnt++; | |
1179 | ||
1180 | if (type == ECOMMUNITY_ENCODE_EVPN | |
1181 | && sub_type | |
1182 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 1183 | ecom_val_ptr = |
b53e67a3 | 1184 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 1185 | break; |
1186 | } | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | /* Update the existing MM ecommunity */ | |
421bb26a | 1191 | if (ecom_val_ptr) { |
b53e67a3 | 1192 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 1193 | } |
1194 | /* Add MM to existing */ | |
1195 | else { | |
1196 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
1197 | ecom_tmp.size = 1; | |
34540b0d | 1198 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1199 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 1200 | |
b53e67a3 DA |
1201 | if (ecomm) |
1202 | bgp_attr_set_ecommunity( | |
1203 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 1204 | else |
b53e67a3 DA |
1205 | bgp_attr_set_ecommunity(attr, |
1206 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 1207 | } |
128ea8ab | 1208 | } |
1209 | ||
1210 | /* Install EVPN route into zebra. */ | |
d62a17ae | 1211 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
1212 | const struct prefix_evpn *p, |
1213 | struct bgp_path_info *pi) | |
128ea8ab | 1214 | { |
d62a17ae | 1215 | int ret; |
d594a14c | 1216 | uint8_t flags; |
58cf0823 | 1217 | int flood_control = VXLAN_FLOOD_DISABLED; |
9c7edc03 | 1218 | uint32_t seq; |
128ea8ab | 1219 | |
d594a14c AK |
1220 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1221 | flags = 0; | |
9c7edc03 AK |
1222 | |
1223 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
1224 | if (pi->attr->sticky) | |
1225 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1226 | if (pi->attr->default_gw) | |
1227 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
1228 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1229 | pi->attr->router_flag) | |
1230 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1231 | ||
1232 | seq = mac_mobility_seqnum(pi->attr); | |
1233 | /* if local ES notify zebra that this is a sync path */ | |
1234 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
1235 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1236 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
1237 | SET_FLAG(flags, | |
1238 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1239 | } | |
1240 | } else { | |
1241 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
1242 | return 0; | |
1243 | ||
1244 | /* if a local path is being turned around and sent | |
1245 | * to zebra it is because it is a sync path on | |
1246 | * a local ES | |
1247 | */ | |
1248 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1249 | /* supply the highest peer seq number to zebra | |
1250 | * for MM seq syncing | |
1251 | */ | |
1252 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
1253 | /* if any of the paths from the peer have the ROUTER | |
1254 | * flag set install the local entry as a router entry | |
1255 | */ | |
1256 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1257 | (pi->attr->es_flags & | |
1258 | ATTR_ES_PEER_ROUTER)) | |
1259 | SET_FLAG(flags, | |
1260 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1261 | ||
1262 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
1263 | SET_FLAG(flags, | |
1264 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1265 | } | |
1266 | ||
d594a14c | 1267 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1268 | bgp, vpn, p, |
1269 | (is_evpn_prefix_ipaddr_none(p) | |
1270 | ? NULL /* MAC update */ | |
1271 | : evpn_type2_path_info_get_mac( | |
1272 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1273 | pi->attr->nexthop, 1, flags, seq, |
1274 | bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
1275 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
1276 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 1277 | } else { |
2a3f51cf | 1278 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
1279 | case PMSI_TNLTYPE_INGR_REPL: |
1280 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
1281 | break; | |
1282 | ||
1283 | case PMSI_TNLTYPE_PIM_SM: | |
1284 | flood_control = VXLAN_FLOOD_PIM_SM; | |
1285 | break; | |
1286 | ||
58cf0823 DS |
1287 | case PMSI_TNLTYPE_NO_INFO: |
1288 | case PMSI_TNLTYPE_RSVP_TE_P2MP: | |
1289 | case PMSI_TNLTYPE_MLDP_P2MP: | |
1290 | case PMSI_TNLTYPE_PIM_SSM: | |
1291 | case PMSI_TNLTYPE_PIM_BIDIR: | |
1292 | case PMSI_TNLTYPE_MLDP_MP2MP: | |
b16dd019 AK |
1293 | flood_control = VXLAN_FLOOD_DISABLED; |
1294 | break; | |
1295 | } | |
1296 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1297 | } |
128ea8ab | 1298 | |
d62a17ae | 1299 | return ret; |
128ea8ab | 1300 | } |
1301 | ||
1302 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1303 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1304 | const struct prefix_evpn *p, |
34c7f35f | 1305 | struct bgp_path_info *pi, bool is_sync) |
128ea8ab | 1306 | { |
d62a17ae | 1307 | int ret; |
128ea8ab | 1308 | |
d62a17ae | 1309 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
34c7f35f | 1310 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1311 | bgp, vpn, p, |
1312 | (is_evpn_prefix_ipaddr_none(p) | |
1313 | ? NULL /* MAC update */ | |
1314 | : evpn_type2_path_info_get_mac( | |
1315 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1316 | (is_sync ? zero_vtep_ip : pi->attr->nexthop), 0, 0, 0, |
1317 | NULL); | |
c44ab6f1 AK |
1318 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) |
1319 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1320 | else |
b16dd019 AK |
1321 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1322 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1323 | |
d62a17ae | 1324 | return ret; |
128ea8ab | 1325 | } |
1326 | ||
1327 | /* | |
1328 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1329 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1330 | * from peers. | |
1331 | */ | |
d62a17ae | 1332 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1333 | struct bgp_dest *dest, |
9c7edc03 AK |
1334 | struct bgp_path_info *old_local, |
1335 | struct bgp_path_info *new_select) | |
128ea8ab | 1336 | { |
9bcb3eef | 1337 | struct bgp_dest *global_dest; |
40381db7 | 1338 | struct bgp_path_info *pi; |
d62a17ae | 1339 | afi_t afi = AFI_L2VPN; |
1340 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1341 | |
9c7edc03 | 1342 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1343 | char esi_buf[ESI_STR_LEN]; |
1344 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1345 | struct prefix_evpn *evp = |
1346 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1347 | |
2dbe669b DA |
1348 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1349 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1350 | sizeof(esi_buf)), | |
1351 | new_select ? esi_to_str(&new_select->attr->esi, | |
1352 | esi_buf2, sizeof(esi_buf2)) | |
1353 | : ""); | |
9c7edc03 AK |
1354 | } |
1355 | ||
d62a17ae | 1356 | /* Locate route node in the global EVPN routing table. Note that |
1357 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1358 | * L3VPN routes. | |
1359 | */ | |
34c7f35f SW |
1360 | global_dest = bgp_evpn_global_node_lookup( |
1361 | bgp->rib[afi][safi], afi, safi, | |
1362 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1363 | &vpn->prd, old_local); | |
9bcb3eef | 1364 | if (global_dest) { |
d62a17ae | 1365 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1366 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1367 | |
d62a17ae | 1368 | /* Schedule for processing - withdraws to peers happen from |
1369 | * this table. | |
1370 | */ | |
40381db7 | 1371 | if (pi) |
9bcb3eef DS |
1372 | bgp_process(bgp, global_dest, afi, safi); |
1373 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1374 | } |
128ea8ab | 1375 | |
d62a17ae | 1376 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1377 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1378 | } |
1379 | ||
1380 | /* | |
1381 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1382 | * if appropriate. | |
c44ab6f1 | 1383 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1384 | */ |
c44ab6f1 | 1385 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1386 | struct bgp_dest *dest) |
d62a17ae | 1387 | { |
4b7e6066 DS |
1388 | struct bgp_path_info *old_select, *new_select; |
1389 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1390 | afi_t afi = AFI_L2VPN; |
1391 | safi_t safi = SAFI_EVPN; | |
1392 | int ret = 0; | |
1393 | ||
1394 | /* Compute the best path. */ | |
9bcb3eef | 1395 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1396 | afi, safi); |
1397 | old_select = old_and_new.old; | |
1398 | new_select = old_and_new.new; | |
1399 | ||
1400 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1401 | * update to zebra RIB. |
1402 | * Remote routes and SYNC route (i.e. local routes with | |
1403 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1404 | * change. | |
d62a17ae | 1405 | */ |
1406 | if (old_select && old_select == new_select | |
1407 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1408 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1409 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1410 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1411 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1412 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1413 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1414 | ret = evpn_zebra_install( |
9bcb3eef DS |
1415 | bgp, vpn, |
1416 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1417 | dest), | |
d594a14c | 1418 | old_select); |
1defdda8 | 1419 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1420 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1421 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1422 | return ret; |
1423 | } | |
1424 | ||
1425 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1426 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1427 | |
1428 | /* bestpath has changed; update relevant fields and install or uninstall | |
1429 | * into the zebra RIB. | |
1430 | */ | |
1431 | if (old_select || new_select) | |
9bcb3eef | 1432 | bgp_bump_version(dest); |
d62a17ae | 1433 | |
1434 | if (old_select) | |
9bcb3eef | 1435 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1436 | if (new_select) { |
9bcb3eef DS |
1437 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1438 | bgp_path_info_unset_flag(dest, new_select, | |
1439 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1440 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1441 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1442 | } |
1443 | ||
9c7edc03 AK |
1444 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1445 | * to zebra | |
1446 | */ | |
d62a17ae | 1447 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1448 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1449 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1450 | ret = evpn_zebra_install( |
9bcb3eef DS |
1451 | bgp, vpn, |
1452 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1453 | new_select); |
d594a14c | 1454 | |
d62a17ae | 1455 | /* If an old best existed and it was a "local" route, the only |
1456 | * reason | |
1457 | * it would be supplanted is due to MAC mobility procedures. So, | |
1458 | * we | |
1459 | * need to do an implicit delete and withdraw that route from | |
1460 | * peers. | |
1461 | */ | |
9c7edc03 AK |
1462 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1463 | old_select && old_select->peer == bgp->peer_self | |
1464 | && old_select->type == ZEBRA_ROUTE_BGP | |
1465 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1466 | && vpn) | |
1467 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1468 | old_select, new_select); | |
d62a17ae | 1469 | } else { |
1470 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1471 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1472 | ret = evpn_zebra_uninstall( |
1473 | bgp, vpn, | |
9bcb3eef DS |
1474 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1475 | dest), | |
34c7f35f | 1476 | old_select, false); |
d62a17ae | 1477 | } |
1478 | ||
1479 | /* Clear any route change flags. */ | |
9bcb3eef | 1480 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1481 | |
18ee8310 | 1482 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1483 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1484 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1485 | |
1486 | return ret; | |
128ea8ab | 1487 | } |
1488 | ||
9c7edc03 AK |
1489 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1490 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1491 | { |
40381db7 | 1492 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1493 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1494 | |
9bcb3eef | 1495 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1496 | tmp_pi = tmp_pi->next) { |
1497 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1498 | local_pi = tmp_pi; |
9c7edc03 AK |
1499 | break; |
1500 | } | |
d62a17ae | 1501 | } |
c85c03c7 | 1502 | |
9c7edc03 | 1503 | return local_pi; |
c85c03c7 | 1504 | } |
1505 | ||
5e53dce3 | 1506 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1507 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1508 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1509 | struct attr *attr, int *route_changed) |
342dd0c6 | 1510 | { |
1511 | struct attr *attr_new = NULL; | |
40381db7 | 1512 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1513 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1514 | struct bgp_path_info *local_pi = NULL; |
1515 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1516 | |
5424b7ba | 1517 | *route_changed = 0; |
342dd0c6 | 1518 | /* locate the local route entry if any */ |
9bcb3eef | 1519 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1520 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1521 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1522 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1523 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1524 | local_pi = tmp_pi; | |
342dd0c6 | 1525 | } |
1526 | ||
2bb9eff4 | 1527 | /* |
0437e105 | 1528 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1529 | * Otherwise see if route attr has changed |
523cafc4 | 1530 | */ |
40381db7 | 1531 | if (!local_pi) { |
342dd0c6 | 1532 | |
5424b7ba MK |
1533 | /* route has changed as this is the first entry */ |
1534 | *route_changed = 1; | |
1535 | ||
342dd0c6 | 1536 | /* Add (or update) attribute to hash. */ |
1537 | attr_new = bgp_attr_intern(attr); | |
1538 | ||
1539 | /* create the route info from attribute */ | |
40381db7 | 1540 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1541 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1542 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1543 | |
b57ba6d2 | 1544 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1545 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1546 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1547 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1548 | pi->extra->num_labels = 1; | |
342dd0c6 | 1549 | |
1550 | /* add the route entry to route node*/ | |
9bcb3eef | 1551 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1552 | } else { |
1553 | ||
40381db7 DS |
1554 | tmp_pi = local_pi; |
1555 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1556 | |
1557 | /* attribute changed */ | |
1558 | *route_changed = 1; | |
1559 | ||
342dd0c6 | 1560 | /* The attribute has changed. */ |
1561 | /* Add (or update) attribute to hash. */ | |
1562 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1563 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1564 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1565 | |
1566 | /* Restore route, if needed. */ | |
40381db7 | 1567 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1568 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1569 | |
1570 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1571 | bgp_attr_unintern(&tmp_pi->attr); |
1572 | tmp_pi->attr = attr_new; | |
083ec940 | 1573 | tmp_pi->uptime = monotime(NULL); |
342dd0c6 | 1574 | } |
1575 | } | |
1576 | return 0; | |
1577 | } | |
1578 | ||
1579 | /* update evpn type-5 route entry */ | |
996c9314 | 1580 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1581 | struct attr *src_attr, afi_t src_afi, |
1582 | safi_t src_safi) | |
342dd0c6 | 1583 | { |
1584 | afi_t afi = AFI_L2VPN; | |
1585 | safi_t safi = SAFI_EVPN; | |
1586 | struct attr attr; | |
9bcb3eef | 1587 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1588 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1589 | int route_changed = 0; |
342dd0c6 | 1590 | |
5e53dce3 T |
1591 | bgp_evpn = bgp_get_evpn(); |
1592 | if (!bgp_evpn) | |
faafdfa8 | 1593 | return 0; |
342dd0c6 | 1594 | |
2f69f6d3 | 1595 | /* Build path attribute for this route - use the source attr, if |
1596 | * present, else treat as locally originated. | |
1597 | */ | |
1598 | if (src_attr) | |
6f4f49b2 | 1599 | attr = *src_attr; |
2f69f6d3 | 1600 | else { |
6006b807 | 1601 | memset(&attr, 0, sizeof(attr)); |
0f05ea43 | 1602 | bgp_attr_default_set(&attr, bgp_vrf, BGP_ORIGIN_IGP); |
2f69f6d3 | 1603 | } |
5394a276 | 1604 | |
5394a276 CS |
1605 | /* Advertise Primary IP (PIP) is enabled, send individual |
1606 | * IP (default instance router-id) as nexthop. | |
1607 | * PIP is disabled or vrr interface is not present | |
27727001 | 1608 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1609 | */ |
1610 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1611 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1612 | attr.nexthop = bgp_vrf->originator_ip; | |
1613 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1614 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1615 | } else { |
27727001 CS |
1616 | /* copy sys rmac */ |
1617 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1618 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1619 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1620 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1621 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1622 | if (bgp_debug_zebra(NULL)) |
1623 | zlog_debug( | |
1624 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1625 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1626 | } |
1627 | ||
c0d72166 DS |
1628 | if (bgp_debug_zebra(NULL)) |
1629 | zlog_debug( | |
1630 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1631 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1632 | &attr.nexthop); | |
5394a276 | 1633 | |
342dd0c6 | 1634 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1635 | |
6c995628 AD |
1636 | if (src_afi == AFI_IP6 && |
1637 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1638 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1639 | if (src_attr && | |
1640 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1641 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1642 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1643 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1644 | &src_attr->mp_nexthop_global, |
1645 | sizeof(struct in6_addr)); | |
1646 | } | |
1647 | } else if (src_afi == AFI_IP && | |
1648 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1649 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1650 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1651 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1652 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1653 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1654 | &src_attr->nexthop, sizeof(struct in_addr)); |
1655 | } | |
1656 | } | |
1657 | ||
342dd0c6 | 1658 | /* Setup RT and encap extended community */ |
1659 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1660 | ||
1661 | /* get the route node in global table */ | |
34c7f35f SW |
1662 | dest = bgp_evpn_global_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1663 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 1664 | assert(dest); |
342dd0c6 | 1665 | |
1666 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1667 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1668 | &route_changed); |
342dd0c6 | 1669 | |
1670 | /* schedule for processing and unlock node */ | |
5424b7ba | 1671 | if (route_changed) { |
9bcb3eef DS |
1672 | bgp_process(bgp_evpn, dest, afi, safi); |
1673 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1674 | } |
342dd0c6 | 1675 | |
1676 | /* uninten temporary */ | |
5ee65f6f | 1677 | if (!src_attr) |
1678 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1679 | return 0; |
1680 | } | |
1681 | ||
9c7edc03 | 1682 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1683 | struct bgp_dest *dest, uint32_t loc_seq, |
1684 | uint32_t *max_sync_seq, bool *active_on_peer, | |
36bac85c AK |
1685 | bool *peer_router, bool *proxy_from_peer, |
1686 | const struct ethaddr *mac) | |
9c7edc03 AK |
1687 | { |
1688 | struct bgp_path_info *tmp_pi; | |
1689 | struct bgp_path_info *second_best_path = NULL; | |
1690 | uint32_t tmp_mm_seq = 0; | |
1691 | esi_t *tmp_esi; | |
1692 | int paths_eq; | |
36bac85c AK |
1693 | struct ethaddr *tmp_mac; |
1694 | bool mac_cmp = false; | |
1695 | struct prefix_evpn *evp = (struct prefix_evpn *)&dest->p; | |
1696 | ||
1697 | ||
1698 | /* mac comparison is not needed for MAC-only routes */ | |
1699 | if (mac && !is_evpn_prefix_ipaddr_none(evp)) | |
1700 | mac_cmp = true; | |
9c7edc03 AK |
1701 | |
1702 | /* find the best non-local path. a local path can only be present | |
1703 | * as best path | |
1704 | */ | |
09319b4e DS |
1705 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1706 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1707 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1708 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1709 | continue; | |
1710 | ||
36bac85c AK |
1711 | /* ignore paths that have a different mac */ |
1712 | if (mac_cmp) { | |
1713 | tmp_mac = evpn_type2_path_info_get_mac(tmp_pi); | |
1714 | if (memcmp(mac, tmp_mac, sizeof(*mac))) | |
1715 | continue; | |
1716 | } | |
1717 | ||
9c7edc03 AK |
1718 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, |
1719 | second_best_path, &paths_eq)) | |
1720 | second_best_path = tmp_pi; | |
1721 | } | |
1722 | ||
1723 | if (!second_best_path) | |
1724 | return; | |
1725 | ||
1726 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1727 | /* if this has the same ES desination as the local path | |
1728 | * it is a sync path | |
1729 | */ | |
1730 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1731 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1732 | if (tmp_mm_seq < loc_seq) | |
1733 | return; | |
1734 | ||
1735 | /* we have a non-proxy path from the ES peer. */ | |
1736 | if (second_best_path->attr->es_flags & | |
1737 | ATTR_ES_PROXY_ADVERT) { | |
1738 | *proxy_from_peer = true; | |
1739 | } else { | |
1740 | *active_on_peer = true; | |
1741 | } | |
1742 | ||
1743 | if (second_best_path->attr->router_flag) | |
1744 | *peer_router = true; | |
1745 | ||
1746 | /* we use both proxy and non-proxy imports to | |
1747 | * determine the max sync sequence | |
1748 | */ | |
1749 | if (tmp_mm_seq > *max_sync_seq) | |
1750 | *max_sync_seq = tmp_mm_seq; | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1755 | * This is need for MM sequence number syncing and proxy advertisement. | |
1756 | * Note: The local path can only exist as a best path in the | |
1757 | * VPN route table. It will take precedence over all sync paths. | |
1758 | */ | |
1759 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1760 | struct bgp_dest *dest, |
1761 | struct attr *attr, | |
36bac85c AK |
1762 | uint32_t loc_seq, bool setup_sync, |
1763 | const struct ethaddr *mac) | |
9c7edc03 AK |
1764 | { |
1765 | esi_t *esi; | |
752eed47 DS |
1766 | struct prefix_evpn *evp = |
1767 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1768 | |
1769 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1770 | return; | |
1771 | ||
1772 | esi = bgp_evpn_attr_get_esi(attr); | |
1773 | if (bgp_evpn_is_esi_valid(esi)) { | |
1774 | if (setup_sync) { | |
1775 | uint32_t max_sync_seq = 0; | |
1776 | bool active_on_peer = false; | |
1777 | bool peer_router = false; | |
1778 | bool proxy_from_peer = false; | |
1779 | ||
09319b4e DS |
1780 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1781 | &max_sync_seq, &active_on_peer, | |
36bac85c AK |
1782 | &peer_router, &proxy_from_peer, |
1783 | mac); | |
9c7edc03 AK |
1784 | attr->mm_sync_seqnum = max_sync_seq; |
1785 | if (active_on_peer) | |
1786 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1787 | else | |
1788 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1789 | if (proxy_from_peer) | |
1790 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1791 | else | |
1792 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1793 | if (peer_router) | |
1794 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1795 | else | |
1796 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1797 | ||
1798 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1799 | char esi_buf[ESI_STR_LEN]; |
1800 | ||
2dbe669b DA |
1801 | zlog_debug( |
1802 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1803 | evp, | |
9c7edc03 | 1804 | esi_to_str(esi, esi_buf, |
2dbe669b | 1805 | sizeof(esi_buf)), |
9c7edc03 | 1806 | max_sync_seq, |
2dbe669b DA |
1807 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1808 | ? "peer-active " | |
1809 | : "", | |
1810 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1811 | ? "peer-proxy " | |
1812 | : "", | |
1813 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1814 | ? "peer-router " | |
1815 | : ""); | |
9c7edc03 AK |
1816 | } |
1817 | } | |
1818 | } else { | |
1819 | attr->mm_sync_seqnum = 0; | |
1820 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1821 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1822 | } | |
1823 | } | |
1824 | ||
128ea8ab | 1825 | /* |
852d9f97 | 1826 | * Create or update EVPN route entry. This could be in the VNI route tables |
128ea8ab | 1827 | * or the global route table. |
1828 | */ | |
d62a17ae | 1829 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1830 | afi_t afi, safi_t safi, |
1831 | struct bgp_dest *dest, struct attr *attr, | |
852d9f97 SW |
1832 | const struct ethaddr *mac, |
1833 | const struct ipaddr *ip, int add, | |
34c7f35f SW |
1834 | struct bgp_path_info **pi, uint8_t flags, |
1835 | uint32_t seq, bool vpn_rt, bool *old_is_sync) | |
d62a17ae | 1836 | { |
40381db7 DS |
1837 | struct bgp_path_info *tmp_pi; |
1838 | struct bgp_path_info *local_pi; | |
d62a17ae | 1839 | struct attr *attr_new; |
b57ba6d2 | 1840 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1841 | uint32_t num_labels = 1; |
d62a17ae | 1842 | int route_change = 1; |
d7c0a89a | 1843 | uint8_t sticky = 0; |
b54892e0 | 1844 | const struct prefix_evpn *evp; |
d62a17ae | 1845 | |
40381db7 | 1846 | *pi = NULL; |
9bcb3eef | 1847 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1848 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1849 | |
f07e1c99 | 1850 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1851 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1852 | |
1853 | /* If route doesn't exist already, create a new one, if told to. | |
1854 | * Otherwise act based on whether the attributes of the route have | |
1855 | * changed or not. | |
1856 | */ | |
40381db7 | 1857 | if (!local_pi && !add) |
d62a17ae | 1858 | return 0; |
1859 | ||
9c7edc03 AK |
1860 | if (old_is_sync && local_pi) |
1861 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1862 | ||
1863 | /* if a local path is being added with a non-zero esi look | |
1864 | * for SYNC paths from ES peers and bubble up the sync-info | |
1865 | */ | |
36bac85c | 1866 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt, mac); |
9c7edc03 | 1867 | |
f07e1c99 | 1868 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1869 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1870 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1871 | |
40381db7 | 1872 | if (!local_pi) { |
d62a17ae | 1873 | /* Add (or update) attribute to hash. */ |
1874 | attr_new = bgp_attr_intern(attr); | |
1875 | ||
1876 | /* Extract MAC mobility sequence number, if any. */ | |
1877 | attr_new->mm_seqnum = | |
1878 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1879 | attr_new->sticky = sticky; | |
1880 | ||
1881 | /* Create new route with its attribute. */ | |
40381db7 | 1882 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1883 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1884 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1885 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1886 | |
1887 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1888 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1889 | |
1890 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1891 | * Only attach second label if we are advertising two labels for | |
1892 | * type-2 routes. | |
1893 | */ | |
996c9314 LB |
1894 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1895 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1896 | vni_t l3vni; |
1897 | ||
1898 | l3vni = bgpevpn_get_l3vni(vpn); | |
1899 | if (l3vni) { | |
1900 | vni2label(l3vni, &label[1]); | |
1901 | num_labels++; | |
1902 | } | |
1903 | } | |
d62a17ae | 1904 | |
40381db7 DS |
1905 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1906 | tmp_pi->extra->num_labels = num_labels; | |
34c7f35f | 1907 | |
852d9f97 SW |
1908 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1909 | if (mac) | |
1910 | evpn_type2_path_info_set_mac(tmp_pi, *mac); | |
1911 | else if (ip) | |
1912 | evpn_type2_path_info_set_ip(tmp_pi, *ip); | |
1913 | } | |
34c7f35f | 1914 | |
0ca10580 CS |
1915 | /* Mark route as self type-2 route */ |
1916 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1917 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1918 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1919 | } else { |
40381db7 DS |
1920 | tmp_pi = local_pi; |
1921 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1922 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1923 | route_change = 0; |
1924 | else { | |
c48d9f5f MK |
1925 | /* |
1926 | * The attributes have changed, type-2 routes needs to | |
1927 | * be advertised with right labels. | |
1928 | */ | |
1929 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1930 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1931 | && CHECK_FLAG(vpn->flags, | |
1932 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1933 | vni_t l3vni; |
1934 | ||
1935 | l3vni = bgpevpn_get_l3vni(vpn); | |
1936 | if (l3vni) { | |
1937 | vni2label(l3vni, &label[1]); | |
1938 | num_labels++; | |
1939 | } | |
1940 | } | |
40381db7 DS |
1941 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1942 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1943 | |
852d9f97 SW |
1944 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1945 | if (mac) | |
1946 | evpn_type2_path_info_set_mac(tmp_pi, | |
1947 | *mac); | |
1948 | else if (ip) | |
1949 | evpn_type2_path_info_set_ip(tmp_pi, | |
1950 | *ip); | |
1951 | } | |
34c7f35f | 1952 | |
d62a17ae | 1953 | /* The attribute has changed. */ |
1954 | /* Add (or update) attribute to hash. */ | |
1955 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1956 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1957 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1958 | |
f07e1c99 | 1959 | /* Extract MAC mobility sequence number, if any. */ |
1960 | attr_new->mm_seqnum = | |
1961 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1962 | attr_new->sticky = sticky; | |
1963 | ||
d62a17ae | 1964 | /* Restore route, if needed. */ |
40381db7 | 1965 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1966 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1967 | |
1968 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1969 | bgp_attr_unintern(&tmp_pi->attr); |
1970 | tmp_pi->attr = attr_new; | |
083ec940 | 1971 | tmp_pi->uptime = monotime(NULL); |
d62a17ae | 1972 | } |
1973 | } | |
1974 | ||
58bff4d1 AK |
1975 | /* local MAC-IP routes in the VNI table are linked to |
1976 | * the destination ES | |
26c03e43 AK |
1977 | */ |
1978 | if (route_change && vpn_rt | |
1979 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1980 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1981 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1982 | ||
d62a17ae | 1983 | /* Return back the route entry. */ |
40381db7 | 1984 | *pi = tmp_pi; |
d62a17ae | 1985 | return route_change; |
128ea8ab | 1986 | } |
1987 | ||
ec0ab544 | 1988 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1989 | struct bgpevpn *vpn, |
1990 | struct bgp_dest *dest) | |
ec0ab544 AK |
1991 | { |
1992 | struct bgp_path_info *tmp_ri; | |
1993 | struct bgp_path_info *curr_select = NULL; | |
1994 | ||
9bcb3eef DS |
1995 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1996 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1997 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1998 | curr_select = tmp_ri; | |
1999 | break; | |
2000 | } | |
2001 | } | |
2002 | ||
2003 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
2004 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
2005 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
2006 | evpn_zebra_install(bgp, vpn, | |
2007 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
2008 | curr_select); | |
ec0ab544 AK |
2009 | } |
2010 | ||
6d8c603a AK |
2011 | /* |
2012 | * If the local route was not selected evict it and tell zebra to re-add | |
2013 | * the best remote dest. | |
2014 | * | |
2015 | * Typically a local path added by zebra is expected to be selected as | |
2016 | * best. In which case when a remote path wins as best (later) | |
2017 | * evpn_route_select_install itself evicts the older-local-best path. | |
2018 | * | |
2019 | * However if bgp's add and zebra's add cross paths (race condition) it | |
2020 | * is possible that the local path is no longer the "older" best path. | |
2021 | * It is a path that was never designated as best and hence requires | |
2022 | * additional handling to prevent bgp from injecting and holding on to a | |
2023 | * non-best local path. | |
2024 | */ | |
2025 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
2026 | struct bgpevpn *vpn, | |
9bcb3eef | 2027 | struct bgp_dest *dest, |
9a8897aa | 2028 | struct bgp_path_info *local_pi) |
6d8c603a | 2029 | { |
6d8c603a | 2030 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 2031 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 2032 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 2033 | dest); |
b54892e0 | 2034 | |
9c7edc03 | 2035 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 2036 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
2037 | |
2038 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 2039 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
2040 | } |
2041 | ||
70524092 AK |
2042 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
2043 | const struct prefix_evpn *p, | |
2044 | esi_t *esi) | |
2045 | { | |
2046 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2047 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
2048 | || (is_evpn_prefix_ipaddr_v6(p) |
2049 | && !IN6_IS_ADDR_LINKLOCAL( | |
2050 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
2051 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
2052 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
2053 | } | |
2054 | ||
128ea8ab | 2055 | /* |
2056 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
2057 | * and schedule for processing. | |
2058 | */ | |
d62a17ae | 2059 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 2060 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 2061 | uint32_t seq, esi_t *esi) |
128ea8ab | 2062 | { |
9bcb3eef | 2063 | struct bgp_dest *dest; |
d62a17ae | 2064 | struct attr attr; |
2065 | struct attr *attr_new; | |
1ec31309 | 2066 | int add_l3_ecomm = 0; |
40381db7 | 2067 | struct bgp_path_info *pi; |
d62a17ae | 2068 | afi_t afi = AFI_L2VPN; |
2069 | safi_t safi = SAFI_EVPN; | |
2070 | int route_change; | |
9c7edc03 | 2071 | bool old_is_sync = false; |
852d9f97 | 2072 | bool mac_only = false; |
128ea8ab | 2073 | |
6006b807 | 2074 | memset(&attr, 0, sizeof(attr)); |
128ea8ab | 2075 | |
d62a17ae | 2076 | /* Build path-attribute for this route. */ |
0f05ea43 | 2077 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
d62a17ae | 2078 | attr.nexthop = vpn->originator_ip; |
2079 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2080 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 2081 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 2082 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
2083 | attr.router_flag = CHECK_FLAG(flags, |
2084 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
2085 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
2086 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
2087 | ||
2088 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 2089 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
2090 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
2091 | } | |
2092 | ||
be41eb68 | 2093 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 2094 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 2095 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 2096 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 2097 | } |
be41eb68 | 2098 | |
2304139a | 2099 | /* router mac is only needed for type-2 routes here. */ |
2100 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
2101 | uint8_t af_flags = 0; | |
2102 | ||
2103 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
2104 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
2105 | ||
2106 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
2107 | } | |
2108 | ||
9c7edc03 | 2109 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
2110 | char buf3[ESI_STR_LEN]; |
2111 | ||
23d0a753 | 2112 | zlog_debug( |
47f5eb74 | 2113 | "VRF %s vni %u type-%u route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 | 2114 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
47f5eb74 | 2115 | : "None", |
2116 | vpn->vni, p->prefix.route_type, p, &attr.rmac, | |
2117 | &attr.mp_nexthop_global_in, | |
23d0a753 | 2118 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 2119 | } |
0ca10580 | 2120 | |
a21bd7a3 | 2121 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 2122 | |
1ec31309 | 2123 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
2124 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
2125 | * these routes. | |
2126 | */ | |
70524092 AK |
2127 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2128 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 2129 | |
2130 | /* Set up extended community. */ | |
2131 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 2132 | |
852d9f97 SW |
2133 | /* First, create (or fetch) route node within the VNI. |
2134 | * NOTE: There is no RD here. | |
2135 | */ | |
2136 | dest = bgp_evpn_vni_node_get(vpn, p, NULL); | |
2137 | ||
2138 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
2139 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
2140 | mac_only = true; | |
128ea8ab | 2141 | |
d62a17ae | 2142 | /* Create or update route entry. */ |
34c7f35f | 2143 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2144 | bgp, vpn, afi, safi, dest, &attr, |
2145 | (mac_only ? NULL : &p->prefix.macip_addr.mac), NULL /* ip */, 1, | |
34c7f35f | 2146 | &pi, flags, seq, true /* setup_sync */, &old_is_sync); |
40381db7 DS |
2147 | assert(pi); |
2148 | attr_new = pi->attr; | |
128ea8ab | 2149 | |
6d8c603a AK |
2150 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2151 | bgp_path_info_lock(pi); | |
7ab604ab CS |
2152 | |
2153 | /* Perform route selection. Normally, the local route in the | |
2154 | * VNI is expected to win and be the best route. However, if | |
2155 | * there is a race condition where a host moved from local to | |
2156 | * remote and the remote route was received in BGP just prior | |
2157 | * to the local MACIP notification from zebra, the remote | |
2158 | * route would win, and we should evict the defunct local route | |
2159 | * and (re)install the remote route into zebra. | |
2160 | */ | |
9bcb3eef | 2161 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 2162 | /* |
9a8897aa AK |
2163 | * If the new local route was not selected evict it and tell zebra |
2164 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
2165 | * routes. | |
6d8c603a | 2166 | */ |
9c7edc03 | 2167 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 2168 | route_change = 0; |
9c7edc03 AK |
2169 | } else { |
2170 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2171 | route_change = 0; | |
2172 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
2173 | } else { | |
2174 | bool new_is_sync; | |
2175 | ||
2176 | /* If the local path already existed and is still the | |
2177 | * best path we need to also check if it transitioned | |
2178 | * from being a sync path to a non-sync path. If it | |
2179 | * it did we need to notify zebra that the sync-path | |
2180 | * has been removed. | |
2181 | */ | |
2182 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2183 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2184 | evpn_zebra_uninstall(bgp, vpn, p, pi, true); |
9c7edc03 | 2185 | } |
9a8897aa | 2186 | } |
6d8c603a AK |
2187 | bgp_path_info_unlock(pi); |
2188 | ||
9bcb3eef | 2189 | bgp_dest_unlock_node(dest); |
128ea8ab | 2190 | |
d62a17ae | 2191 | /* If this is a new route or some attribute has changed, export the |
2192 | * route to the global table. The route will be advertised to peers | |
2193 | * from there. Note that this table is a 2-level tree (RD-level + | |
2194 | * Prefix-level) similar to L3VPN routes. | |
2195 | */ | |
2196 | if (route_change) { | |
40381db7 | 2197 | struct bgp_path_info *global_pi; |
128ea8ab | 2198 | |
34c7f35f SW |
2199 | dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, |
2200 | p, &vpn->prd, NULL); | |
852d9f97 SW |
2201 | update_evpn_route_entry( |
2202 | bgp, vpn, afi, safi, dest, attr_new, NULL /* mac */, | |
2203 | NULL /* ip */, 1, &global_pi, flags, seq, | |
2204 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 2205 | |
d62a17ae | 2206 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
2207 | bgp_process(bgp, dest, afi, safi); |
2208 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2209 | } |
128ea8ab | 2210 | |
d62a17ae | 2211 | /* Unintern temporary. */ |
2212 | aspath_unintern(&attr.aspath); | |
128ea8ab | 2213 | |
d62a17ae | 2214 | return 0; |
128ea8ab | 2215 | } |
2216 | ||
50f74cf1 | 2217 | /* |
2218 | * Delete EVPN route entry. | |
2219 | * The entry can be in ESI/VNI table or the global table. | |
2220 | */ | |
185fb14a | 2221 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 2222 | struct bgp_dest *dest, |
40381db7 | 2223 | struct bgp_path_info **pi) |
342dd0c6 | 2224 | { |
40381db7 | 2225 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 2226 | |
40381db7 | 2227 | *pi = NULL; |
342dd0c6 | 2228 | |
50f74cf1 | 2229 | /* Now, find matching route. */ |
9bcb3eef | 2230 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 2231 | tmp_pi = tmp_pi->next) |
40381db7 DS |
2232 | if (tmp_pi->peer == bgp->peer_self |
2233 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2234 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 2235 | break; |
2236 | ||
40381db7 | 2237 | *pi = tmp_pi; |
342dd0c6 | 2238 | |
2239 | /* Mark route for delete. */ | |
40381db7 | 2240 | if (tmp_pi) |
9bcb3eef | 2241 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 2242 | } |
2243 | ||
2244 | /* Delete EVPN type5 route */ | |
996c9314 | 2245 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2246 | { |
2247 | afi_t afi = AFI_L2VPN; | |
2248 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 2249 | struct bgp_dest *dest = NULL; |
40381db7 | 2250 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2251 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2252 | |
5e53dce3 T |
2253 | bgp_evpn = bgp_get_evpn(); |
2254 | if (!bgp_evpn) | |
faafdfa8 | 2255 | return 0; |
342dd0c6 | 2256 | |
2257 | /* locate the global route entry for this type-5 prefix */ | |
34c7f35f SW |
2258 | dest = bgp_evpn_global_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
2259 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 2260 | if (!dest) |
342dd0c6 | 2261 | return 0; |
2262 | ||
9bcb3eef | 2263 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 2264 | if (pi) |
9bcb3eef DS |
2265 | bgp_process(bgp_evpn, dest, afi, safi); |
2266 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 2267 | return 0; |
2268 | } | |
2269 | ||
128ea8ab | 2270 | /* |
2271 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2272 | * schedule for processing. | |
2273 | */ | |
d62a17ae | 2274 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2275 | struct prefix_evpn *p) | |
2276 | { | |
9bcb3eef | 2277 | struct bgp_dest *dest, *global_dest; |
40381db7 | 2278 | struct bgp_path_info *pi; |
d62a17ae | 2279 | afi_t afi = AFI_L2VPN; |
2280 | safi_t safi = SAFI_EVPN; | |
2281 | ||
2282 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2283 | * there | |
2284 | * is nothing further to do. | |
852d9f97 | 2285 | * NOTE: There is no RD here. |
d62a17ae | 2286 | */ |
852d9f97 | 2287 | dest = bgp_evpn_vni_node_lookup(vpn, p, NULL); |
9bcb3eef | 2288 | if (!dest) |
d62a17ae | 2289 | return 0; |
2290 | ||
2291 | /* Next, locate route node in the global EVPN routing table. Note that | |
2292 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2293 | * L3VPN routes. | |
2294 | */ | |
34c7f35f SW |
2295 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
2296 | safi, p, &vpn->prd, NULL); | |
9bcb3eef | 2297 | if (global_dest) { |
d62a17ae | 2298 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 2299 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 2300 | |
2301 | /* Schedule for processing - withdraws to peers happen from | |
2302 | * this table. | |
2303 | */ | |
40381db7 | 2304 | if (pi) |
9bcb3eef DS |
2305 | bgp_process(bgp, global_dest, afi, safi); |
2306 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 2307 | } |
2308 | ||
2309 | /* Delete route entry in the VNI route table. This can just be removed. | |
2310 | */ | |
9bcb3eef | 2311 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 2312 | if (pi) { |
9bcb3eef DS |
2313 | bgp_path_info_reap(dest, pi); |
2314 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 2315 | } |
9bcb3eef | 2316 | bgp_dest_unlock_node(dest); |
d62a17ae | 2317 | |
2318 | return 0; | |
128ea8ab | 2319 | } |
2320 | ||
70524092 AK |
2321 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2322 | struct bgp_dest *dest, | |
2323 | struct bgp_path_info *local_pi, | |
2324 | const char *caller) | |
9c7edc03 AK |
2325 | { |
2326 | afi_t afi = AFI_L2VPN; | |
2327 | safi_t safi = SAFI_EVPN; | |
2328 | struct bgp_path_info *pi; | |
2329 | struct attr attr; | |
2330 | struct attr *attr_new; | |
2331 | uint32_t seq; | |
2332 | int add_l3_ecomm = 0; | |
09319b4e | 2333 | struct bgp_dest *global_dest; |
9c7edc03 | 2334 | struct bgp_path_info *global_pi; |
34c7f35f | 2335 | struct prefix_evpn evp; |
9c7edc03 AK |
2336 | int route_change; |
2337 | bool old_is_sync = false; | |
2338 | ||
2339 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
2340 | return; | |
2341 | ||
34c7f35f SW |
2342 | /* |
2343 | * VNI table MAC-IP prefixes don't have MAC so make sure it's set from | |
2344 | * path info here. | |
2345 | */ | |
852d9f97 SW |
2346 | if (is_evpn_prefix_ipaddr_none((struct prefix_evpn *)&dest->p)) { |
2347 | /* VNI MAC -> Global */ | |
2348 | evpn_type2_prefix_global_copy( | |
2349 | &evp, (struct prefix_evpn *)&dest->p, NULL /* mac */, | |
2350 | evpn_type2_path_info_get_ip(local_pi)); | |
2351 | } else { | |
2352 | /* VNI IP -> Global */ | |
2353 | evpn_type2_prefix_global_copy( | |
2354 | &evp, (struct prefix_evpn *)&dest->p, | |
2355 | evpn_type2_path_info_get_mac(local_pi), NULL /* ip */); | |
2356 | } | |
34c7f35f | 2357 | |
9c7edc03 AK |
2358 | /* |
2359 | * Build attribute per local route as the MAC mobility and | |
2360 | * some other values could differ for different routes. The | |
2361 | * attributes will be shared in the hash table. | |
2362 | */ | |
0f05ea43 | 2363 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
9c7edc03 AK |
2364 | attr.nexthop = vpn->originator_ip; |
2365 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2366 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2367 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2368 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2369 | attr.es_flags = local_pi->attr->es_flags; | |
2370 | if (local_pi->attr->default_gw) { | |
2371 | attr.default_gw = 1; | |
34c7f35f | 2372 | if (is_evpn_prefix_ipaddr_v6(&evp)) |
9c7edc03 AK |
2373 | attr.router_flag = 1; |
2374 | } | |
2375 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
34c7f35f | 2376 | bgp_evpn_get_rmac_nexthop(vpn, &evp, &attr, local_pi->extra->af_flags); |
9c7edc03 AK |
2377 | vni2label(vpn->vni, &(attr.label)); |
2378 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2379 | * using L3 VNI for type-2 routes also. | |
2380 | */ | |
70524092 | 2381 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
34c7f35f | 2382 | vpn, &evp, |
70524092 | 2383 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); |
9c7edc03 AK |
2384 | |
2385 | /* Set up extended community. */ | |
2386 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2387 | seq = mac_mobility_seqnum(local_pi->attr); | |
2388 | ||
2389 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2390 | char buf3[ESI_STR_LEN]; |
2391 | ||
23d0a753 | 2392 | zlog_debug( |
c0d72166 | 2393 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2394 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2395 | : " ", | |
34c7f35f | 2396 | vpn->vni, &evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2397 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2398 | attr.es_flags, caller); | |
9c7edc03 AK |
2399 | } |
2400 | ||
2401 | /* Update the route entry. */ | |
09319b4e | 2402 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2403 | bgp, vpn, afi, safi, dest, &attr, NULL /* mac */, NULL /* ip */, |
2404 | 0, &pi, 0, seq, true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2405 | |
2406 | assert(pi); | |
2407 | attr_new = pi->attr; | |
2408 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2409 | bgp_path_info_lock(pi); | |
2410 | ||
2411 | /* Perform route selection. Normally, the local route in the | |
2412 | * VNI is expected to win and be the best route. However, | |
2413 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2414 | * that causes best selection to be based on next hop), a | |
2415 | * remote route could win. If the local route is the best, | |
2416 | * ensure it is updated in the global EVPN route table and | |
2417 | * advertised to peers; otherwise, ensure it is evicted and | |
2418 | * (re)install the remote route into zebra. | |
2419 | */ | |
09319b4e | 2420 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2421 | |
2422 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2423 | route_change = 0; | |
2424 | } else { | |
2425 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2426 | route_change = 0; | |
09319b4e | 2427 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2428 | } else { |
2429 | bool new_is_sync; | |
2430 | ||
2431 | /* If the local path already existed and is still the | |
2432 | * best path we need to also check if it transitioned | |
2433 | * from being a sync path to a non-sync path. If it | |
2434 | * it did we need to notify zebra that the sync-path | |
2435 | * has been removed. | |
2436 | */ | |
2437 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2438 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2439 | evpn_zebra_uninstall(bgp, vpn, &evp, pi, true); |
9c7edc03 AK |
2440 | } |
2441 | } | |
2442 | ||
2443 | ||
2444 | /* unlock pi */ | |
2445 | bgp_path_info_unlock(pi); | |
2446 | ||
2447 | if (route_change) { | |
2448 | /* Update route in global routing table. */ | |
34c7f35f SW |
2449 | global_dest = bgp_evpn_global_node_get( |
2450 | bgp->rib[afi][safi], afi, safi, &evp, &vpn->prd, NULL); | |
09319b4e DS |
2451 | assert(global_dest); |
2452 | update_evpn_route_entry( | |
852d9f97 SW |
2453 | bgp, vpn, afi, safi, global_dest, attr_new, |
2454 | NULL /* mac */, NULL /* ip */, 0, &global_pi, 0, | |
2455 | mac_mobility_seqnum(attr_new), false /* setup_sync */, | |
2456 | NULL /* old_is_sync */); | |
9c7edc03 AK |
2457 | |
2458 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2459 | bgp_process(bgp, global_dest, afi, safi); |
2460 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2461 | } |
2462 | ||
2463 | /* Unintern temporary. */ | |
2464 | aspath_unintern(&attr.aspath); | |
2465 | } | |
2466 | ||
852d9f97 SW |
2467 | static void update_type2_route(struct bgp *bgp, struct bgpevpn *vpn, |
2468 | struct bgp_dest *dest) | |
2469 | { | |
2470 | struct bgp_path_info *tmp_pi; | |
2471 | ||
2472 | const struct prefix_evpn *evp = | |
2473 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2474 | ||
2475 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2476 | return; | |
2477 | ||
2478 | /* Identify local route. */ | |
2479 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; | |
2480 | tmp_pi = tmp_pi->next) { | |
2481 | if (tmp_pi->peer == bgp->peer_self && | |
2482 | tmp_pi->type == ZEBRA_ROUTE_BGP && | |
2483 | tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
2484 | break; | |
2485 | } | |
2486 | ||
2487 | if (!tmp_pi) | |
2488 | return; | |
2489 | ||
2490 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, __func__); | |
2491 | } | |
2492 | ||
128ea8ab | 2493 | /* |
2494 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2495 | * be scheduled for advertise to peers. | |
2496 | */ | |
852d9f97 | 2497 | static void update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 2498 | { |
9bcb3eef | 2499 | struct bgp_dest *dest; |
d62a17ae | 2500 | |
852d9f97 SW |
2501 | /* Walk this VNI's route MAC & IP table and update local type-2 |
2502 | * routes. For any routes updated, update corresponding entry in the | |
2503 | * global table too. | |
d62a17ae | 2504 | */ |
852d9f97 SW |
2505 | for (dest = bgp_table_top(vpn->mac_table); dest; |
2506 | dest = bgp_route_next(dest)) | |
2507 | update_type2_route(bgp, vpn, dest); | |
d62a17ae | 2508 | |
852d9f97 SW |
2509 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2510 | dest = bgp_route_next(dest)) | |
2511 | update_type2_route(bgp, vpn, dest); | |
128ea8ab | 2512 | } |
2513 | ||
2514 | /* | |
2515 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2516 | * global routing table. These are also scheduled for withdraw from peers. | |
2517 | */ | |
17151ae9 | 2518 | static void delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2519 | { |
d62a17ae | 2520 | afi_t afi; |
2521 | safi_t safi; | |
9bcb3eef | 2522 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2523 | struct bgp_table *table; |
40381db7 | 2524 | struct bgp_path_info *pi; |
128ea8ab | 2525 | |
d62a17ae | 2526 | afi = AFI_L2VPN; |
2527 | safi = SAFI_EVPN; | |
128ea8ab | 2528 | |
9bcb3eef DS |
2529 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2530 | (struct prefix *)&vpn->prd); | |
17151ae9 | 2531 | if (rddest) { |
9bcb3eef DS |
2532 | table = bgp_dest_get_bgp_table_info(rddest); |
2533 | for (dest = bgp_table_top(table); dest; | |
2534 | dest = bgp_route_next(dest)) { | |
2535 | const struct prefix_evpn *evp = | |
2536 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2537 | dest); | |
128ea8ab | 2538 | |
d62a17ae | 2539 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2540 | continue; | |
128ea8ab | 2541 | |
9bcb3eef | 2542 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2543 | if (pi) |
9bcb3eef | 2544 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2545 | } |
128ea8ab | 2546 | |
17151ae9 | 2547 | /* Unlock RD node. */ |
9bcb3eef | 2548 | bgp_dest_unlock_node(rddest); |
17151ae9 | 2549 | } |
128ea8ab | 2550 | } |
2551 | ||
852d9f97 SW |
2552 | static void delete_vni_type2_route(struct bgp *bgp, struct bgp_dest *dest) |
2553 | { | |
2554 | struct bgp_path_info *pi; | |
2555 | afi_t afi = AFI_L2VPN; | |
2556 | safi_t safi = SAFI_EVPN; | |
2557 | ||
2558 | const struct prefix_evpn *evp = | |
2559 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2560 | ||
2561 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2562 | return; | |
2563 | ||
2564 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); | |
2565 | ||
2566 | /* Route entry in local table gets deleted immediately. */ | |
2567 | if (pi) | |
2568 | bgp_path_info_reap(dest, pi); | |
2569 | } | |
2570 | ||
2571 | static void delete_vni_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
2572 | { | |
2573 | struct bgp_dest *dest; | |
2574 | ||
2575 | /* Next, walk this VNI's MAC & IP route table and delete local type-2 | |
2576 | * routes. | |
2577 | */ | |
2578 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
2579 | dest = bgp_route_next(dest)) | |
2580 | delete_vni_type2_route(bgp, dest); | |
2581 | ||
2582 | for (dest = bgp_table_top(vpn->ip_table); dest; | |
2583 | dest = bgp_route_next(dest)) | |
2584 | delete_vni_type2_route(bgp, dest); | |
2585 | } | |
2586 | ||
128ea8ab | 2587 | /* |
2588 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2589 | * table as well as the per-VNI route table. | |
2590 | */ | |
852d9f97 | 2591 | static void delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2592 | { |
d62a17ae | 2593 | /* First, walk the global route table for this VNI's type-2 local |
2594 | * routes. | |
2595 | * EVPN routes are a 2-level table, first get the RD table. | |
2596 | */ | |
2597 | delete_global_type2_routes(bgp, vpn); | |
852d9f97 | 2598 | delete_vni_type2_routes(bgp, vpn); |
128ea8ab | 2599 | } |
2600 | ||
2601 | /* | |
2602 | * Delete all routes in the per-VNI route table. | |
2603 | */ | |
852d9f97 | 2604 | static void delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2605 | { |
9bcb3eef | 2606 | struct bgp_dest *dest; |
40381db7 | 2607 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2608 | |
852d9f97 SW |
2609 | /* Walk this VNI's MAC & IP route table and delete all routes. */ |
2610 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
9bcb3eef DS |
2611 | dest = bgp_route_next(dest)) { |
2612 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2613 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2614 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2615 | bgp_path_info_delete(dest, pi); |
2616 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2617 | } |
2618 | } | |
128ea8ab | 2619 | |
852d9f97 SW |
2620 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2621 | dest = bgp_route_next(dest)) { | |
2622 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
2623 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
2624 | bgp_path_info_delete(dest, pi); | |
2625 | bgp_path_info_reap(dest, pi); | |
2626 | } | |
2627 | } | |
128ea8ab | 2628 | } |
2629 | ||
833b8a50 AK |
2630 | /* BUM traffic flood mode per-l2-vni */ |
2631 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2632 | struct bgpevpn *vpn) | |
2633 | { | |
2634 | /* if flooding has been globally disabled per-vni mode is | |
2635 | * not relevant | |
2636 | */ | |
2637 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2638 | return VXLAN_FLOOD_DISABLED; | |
2639 | ||
2640 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2641 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2642 | return VXLAN_FLOOD_PIM_SM; | |
2643 | ||
2644 | /* default is ingress replication */ | |
2645 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2646 | } | |
2647 | ||
128ea8ab | 2648 | /* |
2649 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2650 | * export RT getting modified or change to tunnel IP. Note that these | |
2651 | * situations need the route in the per-VNI table as well as the global | |
2652 | * table to be updated (as attributes change). | |
2653 | */ | |
0ca10580 | 2654 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2655 | { |
d62a17ae | 2656 | int ret; |
2657 | struct prefix_evpn p; | |
128ea8ab | 2658 | |
9c49ac74 AD |
2659 | update_type1_routes_for_evi(bgp, vpn); |
2660 | ||
d62a17ae | 2661 | /* Update and advertise the type-3 route (only one) followed by the |
2662 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2663 | * |
2664 | * RT-3 only if doing head-end replication | |
d62a17ae | 2665 | */ |
833b8a50 AK |
2666 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2667 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2668 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2669 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2670 | if (ret) |
2671 | return ret; | |
2672 | } | |
128ea8ab | 2673 | |
852d9f97 SW |
2674 | update_all_type2_routes(bgp, vpn); |
2675 | return 0; | |
128ea8ab | 2676 | } |
2677 | ||
2678 | /* | |
2679 | * Delete (and withdraw) local routes for specified VNI from the global | |
2680 | * table and per-VNI table. After this, remove all other routes from | |
2681 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2682 | * (advertise-all-vni) being disabled. | |
2683 | */ | |
d62a17ae | 2684 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2685 | { |
d62a17ae | 2686 | int ret; |
2687 | struct prefix_evpn p; | |
128ea8ab | 2688 | |
d62a17ae | 2689 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2690 | * followed by type-3 routes (only one) - for this VNI. | |
2691 | */ | |
852d9f97 | 2692 | delete_all_type2_routes(bgp, vpn); |
128ea8ab | 2693 | |
d62a17ae | 2694 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2695 | ret = delete_evpn_route(bgp, vpn, &p); | |
2696 | if (ret) | |
2697 | return ret; | |
128ea8ab | 2698 | |
d62a17ae | 2699 | /* Delete all routes from the per-VNI table. */ |
852d9f97 SW |
2700 | delete_all_vni_routes(bgp, vpn); |
2701 | return 0; | |
128ea8ab | 2702 | } |
2703 | ||
76d07c7a AK |
2704 | /* |
2705 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2706 | * remove the type-3 route if any. A new type-3 route will be generated | |
2707 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2708 | */ | |
2709 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2710 | struct in_addr mcast_grp) | |
2711 | { | |
2712 | struct prefix_evpn p; | |
2713 | ||
2714 | vpn->mcast_grp = mcast_grp; | |
2715 | ||
2716 | if (is_vni_live(vpn)) { | |
2717 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2718 | delete_evpn_route(bgp, vpn, &p); | |
2719 | } | |
2720 | ||
2721 | return 0; | |
2722 | } | |
2723 | ||
128ea8ab | 2724 | /* |
d1911c26 | 2725 | * There is a tunnel endpoint IP address change for this VNI, delete |
2726 | * prior type-3 route (if needed) and update. | |
2727 | * Note: Route re-advertisement happens elsewhere after other processing | |
2728 | * other changes. | |
128ea8ab | 2729 | */ |
4dabdde3 TA |
2730 | static void handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2731 | struct in_addr originator_ip) | |
128ea8ab | 2732 | { |
d62a17ae | 2733 | struct prefix_evpn p; |
128ea8ab | 2734 | |
4dabdde3 TA |
2735 | if (IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) |
2736 | return; | |
2737 | ||
ddd16ed5 MK |
2738 | /* If VNI is not live, we only need to update the originator ip */ |
2739 | if (!is_vni_live(vpn)) { | |
2740 | vpn->originator_ip = originator_ip; | |
4dabdde3 | 2741 | return; |
ddd16ed5 MK |
2742 | } |
2743 | ||
db0e1937 MK |
2744 | /* Update the tunnel-ip hash */ |
2745 | bgp_tip_del(bgp, &vpn->originator_ip); | |
826c3f6d TA |
2746 | if (bgp_tip_add(bgp, &originator_ip)) |
2747 | /* The originator_ip was not already present in the | |
2748 | * bgp martian next-hop table as a tunnel-ip, so we | |
2749 | * need to go back and filter routes matching the new | |
2750 | * martian next-hop. | |
2751 | */ | |
2752 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
db0e1937 | 2753 | |
d62a17ae | 2754 | /* Need to withdraw type-3 route as the originator IP is part |
2755 | * of the key. | |
2756 | */ | |
2757 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2758 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2759 | |
d62a17ae | 2760 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2761 | vpn->originator_ip = originator_ip; | |
4dabdde3 | 2762 | return; |
185fb14a | 2763 | } |
50f74cf1 | 2764 | |
185fb14a AK |
2765 | static struct bgp_path_info * |
2766 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2767 | struct bgp_dest *dest, struct attr *attr) | |
2768 | { | |
2769 | struct attr *attr_new; | |
2770 | struct bgp_path_info *pi; | |
50f74cf1 | 2771 | |
185fb14a AK |
2772 | /* Add (or update) attribute to hash. */ |
2773 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2774 | |
185fb14a AK |
2775 | /* Create new route with its attribute. */ |
2776 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2777 | attr_new, dest); | |
2778 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2779 | bgp_path_info_extra_get(pi); | |
2780 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2781 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2782 | if (parent_pi->extra) { | |
2783 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2784 | sizeof(pi->extra->label)); | |
2785 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2786 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2787 | } |
34c7f35f | 2788 | |
185fb14a | 2789 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2790 | |
185fb14a | 2791 | return pi; |
50f74cf1 | 2792 | } |
2793 | ||
d3135ba3 | 2794 | /* |
2795 | * Install route entry into the VRF routing table and invoke route selection. | |
2796 | */ | |
2797 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2798 | const struct prefix_evpn *evp, |
40381db7 | 2799 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2800 | { |
9bcb3eef | 2801 | struct bgp_dest *dest; |
40381db7 | 2802 | struct bgp_path_info *pi; |
1ec31309 | 2803 | struct attr attr; |
d3135ba3 | 2804 | struct attr *attr_new; |
c4edf708 | 2805 | int ret = 0; |
d3135ba3 | 2806 | struct prefix p; |
2807 | struct prefix *pp = &p; | |
2808 | afi_t afi = 0; | |
2809 | safi_t safi = 0; | |
5f0c5ec8 | 2810 | bool new_pi = false; |
58bff4d1 AK |
2811 | bool use_l3nhg = false; |
2812 | bool is_l3nhg_active = false; | |
a2299aba | 2813 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2814 | |
2815 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2816 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2817 | |
2dbe669b | 2818 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2819 | zlog_debug( |
2dbe669b DA |
2820 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2821 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2822 | parent_pi->flags); | |
1eb88002 | 2823 | |
d3135ba3 | 2824 | /* Create (or fetch) route within the VRF. */ |
2825 | /* NOTE: There is no RD here. */ | |
3714a385 | 2826 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2827 | afi = AFI_IP; |
2828 | safi = SAFI_UNICAST; | |
9bcb3eef | 2829 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2830 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2831 | afi = AFI_IP6; |
2832 | safi = SAFI_UNICAST; | |
9bcb3eef | 2833 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2834 | } else |
2835 | return 0; | |
2836 | ||
1ec31309 | 2837 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2838 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2839 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2840 | * address for the rest of the code to flow through. In the case of IPv4, | |
2841 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2842 | */ |
6f4f49b2 | 2843 | attr = *parent_pi->attr; |
a2299aba AD |
2844 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2845 | if (afi == AFI_IP6) | |
2846 | evpn_convert_nexthop_to_ipv6(&attr); | |
7226bc40 TA |
2847 | else { |
2848 | attr.nexthop = attr.mp_nexthop_global_in; | |
a2299aba | 2849 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
7226bc40 | 2850 | } |
a2299aba AD |
2851 | } else { |
2852 | ||
2853 | /* | |
2854 | * If gateway IP overlay index is specified in the NLRI of | |
2855 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2856 | * for the prefix in the VRF | |
2857 | */ | |
2858 | if (bgp_debug_zebra(NULL)) { | |
2859 | zlog_debug( | |
2860 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2861 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2862 | buf1, sizeof(buf1)), pp, | |
2863 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2864 | } | |
2865 | ||
2866 | if (afi == AFI_IP6) { | |
2867 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2868 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2869 | sizeof(struct in6_addr)); |
2870 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2871 | } else { | |
860e740b | 2872 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2873 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2874 | } | |
2875 | } | |
1ec31309 | 2876 | |
58bff4d1 AK |
2877 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2878 | &is_l3nhg_active, NULL); | |
2879 | if (use_l3nhg) | |
2880 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2881 | if (is_l3nhg_active) | |
2882 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2883 | ||
d3135ba3 | 2884 | /* Check if route entry is already present. */ |
9bcb3eef | 2885 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2886 | if (pi->extra |
2887 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2888 | break; |
2889 | ||
5f0c5ec8 | 2890 | if (!pi) { |
9bcb3eef | 2891 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2892 | new_pi = true; |
2893 | } else { | |
40381db7 DS |
2894 | if (attrhash_cmp(pi->attr, &attr) |
2895 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2896 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2897 | return 0; |
2898 | } | |
2899 | /* The attribute has changed. */ | |
2900 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2901 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2902 | |
2903 | /* Restore route, if needed. */ | |
40381db7 | 2904 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2905 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2906 | |
2907 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2908 | if ((afi == AFI_IP |
2909 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2910 | || (afi == AFI_IP6 | |
2911 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2912 | &attr_new->mp_nexthop_global))) | |
2913 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2914 | |
9bcb3eef | 2915 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2916 | /* Unintern existing, set to new. */ |
40381db7 DS |
2917 | bgp_attr_unintern(&pi->attr); |
2918 | pi->attr = attr_new; | |
083ec940 | 2919 | pi->uptime = monotime(NULL); |
d3135ba3 | 2920 | } |
a2299aba AD |
2921 | |
2922 | /* Gateway IP nexthop should be resolved */ | |
2923 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2924 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2925 | NULL, 0, NULL)) |
a2299aba AD |
2926 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2927 | else { | |
2928 | if (BGP_DEBUG(nht, NHT)) { | |
2929 | inet_ntop(pp->family, | |
2930 | &attr.evpn_overlay.gw_ip, | |
2931 | buf1, sizeof(buf1)); | |
2932 | zlog_debug("%s: gateway IP NH unresolved", | |
2933 | buf1); | |
2934 | } | |
2935 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2936 | } | |
2937 | } else { | |
2938 | ||
2939 | /* as it is an importation, change nexthop */ | |
2940 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2941 | } | |
d3135ba3 | 2942 | |
090efa2f AK |
2943 | /* Link path to evpn nexthop */ |
2944 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2945 | ||
9bcb3eef | 2946 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2947 | safi); |
b49cdf4c | 2948 | |
d3135ba3 | 2949 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2950 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2951 | |
7452e879 | 2952 | /* Process for route leaking. */ |
2953 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2954 | ||
9bcb3eef | 2955 | bgp_dest_unlock_node(dest); |
3c11d70a | 2956 | |
5f0c5ec8 | 2957 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2958 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2959 | new_pi ? "new" : "update", dest, | |
2960 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2961 | pi->flags); | |
5f0c5ec8 | 2962 | |
d3135ba3 | 2963 | return ret; |
2964 | } | |
2965 | ||
128ea8ab | 2966 | /* |
852d9f97 | 2967 | * Common handling for vni route tables install/selection. |
128ea8ab | 2968 | */ |
852d9f97 SW |
2969 | static int install_evpn_route_entry_in_vni_common( |
2970 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
2971 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
d62a17ae | 2972 | { |
40381db7 | 2973 | struct bgp_path_info *pi; |
9c7edc03 | 2974 | struct bgp_path_info *local_pi; |
d62a17ae | 2975 | struct attr *attr_new; |
2976 | int ret; | |
74efb822 AK |
2977 | bool old_local_es = false; |
2978 | bool new_local_es; | |
c44ab6f1 | 2979 | |
d62a17ae | 2980 | /* Check if route entry is already present. */ |
9bcb3eef | 2981 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2982 | if (pi->extra |
2983 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2984 | break; |
2985 | ||
bd0254af MS |
2986 | if (!pi) { |
2987 | /* Create an info */ | |
26c03e43 | 2988 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2989 | parent_pi->attr); |
34c7f35f | 2990 | |
852d9f97 SW |
2991 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2992 | if (is_evpn_type2_dest_ipaddr_none(dest)) | |
2993 | evpn_type2_path_info_set_ip( | |
2994 | pi, p->prefix.macip_addr.ip); | |
2995 | else | |
2996 | evpn_type2_path_info_set_mac( | |
2997 | pi, p->prefix.macip_addr.mac); | |
2998 | } | |
34c7f35f | 2999 | |
74efb822 | 3000 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 3001 | } else { |
b5118501 TA |
3002 | /* Return early if attributes haven't changed |
3003 | * and dest isn't flagged for removal. | |
3004 | * dest will be unlocked by either | |
3005 | * install_evpn_route_entry_in_vni_mac() or | |
3006 | * install_evpn_route_entry_in_vni_ip() | |
3007 | */ | |
3008 | if (attrhash_cmp(pi->attr, parent_pi->attr) && | |
3009 | !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 3010 | return 0; |
d62a17ae | 3011 | /* The attribute has changed. */ |
3012 | /* Add (or update) attribute to hash. */ | |
40381db7 | 3013 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 3014 | |
50f74cf1 | 3015 | /* Restore route, if needed. */ |
40381db7 | 3016 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 3017 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 3018 | |
3019 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
3020 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
3021 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 3022 | |
74efb822 AK |
3023 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
3024 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
3025 | /* If ESI is different or if its type has changed we | |
3026 | * need to reinstall the path in zebra | |
3027 | */ | |
3028 | if ((old_local_es != new_local_es) | |
3029 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
3030 | sizeof(attr_new->esi))) { | |
3031 | ||
3032 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
3033 | zlog_debug("VNI %d path %pFX chg to %s es", | |
3034 | vpn->vni, &pi->net->p, | |
3035 | new_local_es ? "local" | |
3036 | : "non-local"); | |
3037 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
3038 | } | |
3039 | ||
50f74cf1 | 3040 | /* Unintern existing, set to new. */ |
40381db7 DS |
3041 | bgp_attr_unintern(&pi->attr); |
3042 | pi->attr = attr_new; | |
083ec940 | 3043 | pi->uptime = monotime(NULL); |
50f74cf1 | 3044 | } |
3045 | ||
021b6596 AD |
3046 | /* Add this route to remote IP hashtable */ |
3047 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
3048 | ||
50f74cf1 | 3049 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3050 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 3051 | |
9c7edc03 AK |
3052 | /* if the best path is a local path with a non-zero ES |
3053 | * sync info against the local path may need to be updated | |
3054 | * when a remote path is added/updated (including changes | |
3055 | * from sync-path to remote-path) | |
3056 | */ | |
3057 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 3058 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 3059 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 3060 | __func__); |
852d9f97 SW |
3061 | |
3062 | return ret; | |
3063 | } | |
3064 | ||
3065 | /* | |
3066 | * Common handling for vni route tables uninstall/selection. | |
3067 | */ | |
3068 | static int uninstall_evpn_route_entry_in_vni_common( | |
3069 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
3070 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
3071 | { | |
3072 | struct bgp_path_info *pi; | |
3073 | struct bgp_path_info *local_pi; | |
3074 | int ret; | |
3075 | ||
3076 | /* Find matching route entry. */ | |
3077 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
3078 | if (pi->extra && | |
3079 | (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
3080 | break; | |
3081 | ||
3082 | if (!pi) | |
3083 | return 0; | |
3084 | ||
3085 | bgp_evpn_remote_ip_hash_del(vpn, pi); | |
3086 | ||
3087 | /* Mark entry for deletion */ | |
3088 | bgp_path_info_delete(dest, pi); | |
3089 | ||
3090 | /* Perform route selection and update zebra, if required. */ | |
3091 | ret = evpn_route_select_install(bgp, vpn, dest); | |
3092 | ||
3093 | /* if the best path is a local path with a non-zero ES | |
3094 | * sync info against the local path may need to be updated | |
3095 | * when a remote path is deleted | |
3096 | */ | |
3097 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
3098 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
3099 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
3100 | __func__); | |
3101 | ||
3102 | return ret; | |
3103 | } | |
3104 | ||
3105 | /* | |
3106 | * Install route entry into VNI IP table and invoke route selection. | |
3107 | */ | |
3108 | static int install_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3109 | struct bgpevpn *vpn, | |
3110 | const struct prefix_evpn *p, | |
3111 | struct bgp_path_info *parent_pi) | |
3112 | { | |
3113 | int ret; | |
3114 | struct bgp_dest *dest; | |
3115 | ||
3116 | /* Ignore MAC Only Type-2 */ | |
3117 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3118 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3119 | return 0; | |
3120 | ||
3121 | /* Create (or fetch) route within the VNI IP table. */ | |
3122 | dest = bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
3123 | ||
3124 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3125 | parent_pi); | |
3126 | ||
3127 | bgp_dest_unlock_node(dest); | |
3128 | ||
3129 | return ret; | |
3130 | } | |
3131 | ||
3132 | /* | |
3133 | * Install route entry into VNI MAC table and invoke route selection. | |
3134 | */ | |
3135 | static int install_evpn_route_entry_in_vni_mac(struct bgp *bgp, | |
3136 | struct bgpevpn *vpn, | |
3137 | const struct prefix_evpn *p, | |
3138 | struct bgp_path_info *parent_pi) | |
3139 | { | |
3140 | int ret; | |
3141 | struct bgp_dest *dest; | |
3142 | ||
3143 | /* Only type-2 routes go into this table */ | |
3144 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3145 | return 0; | |
3146 | ||
3147 | /* Create (or fetch) route within the VNI MAC table. */ | |
3148 | dest = bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
3149 | ||
3150 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3151 | parent_pi); | |
3152 | ||
3153 | bgp_dest_unlock_node(dest); | |
3154 | ||
3155 | return ret; | |
3156 | } | |
3157 | ||
3158 | /* | |
3159 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3160 | */ | |
3161 | static int uninstall_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3162 | struct bgpevpn *vpn, | |
3163 | const struct prefix_evpn *p, | |
3164 | struct bgp_path_info *parent_pi) | |
3165 | { | |
3166 | int ret; | |
3167 | struct bgp_dest *dest; | |
3168 | ||
3169 | /* Ignore MAC Only Type-2 */ | |
3170 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3171 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3172 | return 0; | |
3173 | ||
3174 | /* Locate route within the VNI IP table. */ | |
3175 | dest = bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
3176 | if (!dest) | |
3177 | return 0; | |
3178 | ||
3179 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3180 | parent_pi); | |
3181 | ||
9bcb3eef | 3182 | bgp_dest_unlock_node(dest); |
a97a1e11 | 3183 | |
50f74cf1 | 3184 | return ret; |
3185 | } | |
3186 | ||
852d9f97 SW |
3187 | /* |
3188 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3189 | */ | |
3190 | static int | |
3191 | uninstall_evpn_route_entry_in_vni_mac(struct bgp *bgp, struct bgpevpn *vpn, | |
3192 | const struct prefix_evpn *p, | |
3193 | struct bgp_path_info *parent_pi) | |
3194 | { | |
3195 | int ret; | |
3196 | struct bgp_dest *dest; | |
3197 | ||
3198 | /* Only type-2 routes go into this table */ | |
3199 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3200 | return 0; | |
3201 | ||
3202 | /* Locate route within the VNI MAC table. */ | |
3203 | dest = bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, parent_pi); | |
3204 | if (!dest) | |
3205 | return 0; | |
3206 | ||
3207 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3208 | parent_pi); | |
3209 | ||
3210 | bgp_dest_unlock_node(dest); | |
3211 | ||
3212 | return ret; | |
3213 | } | |
d3135ba3 | 3214 | /* |
3215 | * Uninstall route entry from the VRF routing table and send message | |
3216 | * to zebra, if appropriate. | |
3217 | */ | |
3218 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 3219 | const struct prefix_evpn *evp, |
40381db7 | 3220 | struct bgp_path_info *parent_pi) |
d3135ba3 | 3221 | { |
9bcb3eef | 3222 | struct bgp_dest *dest; |
40381db7 | 3223 | struct bgp_path_info *pi; |
c4edf708 | 3224 | int ret = 0; |
d3135ba3 | 3225 | struct prefix p; |
3226 | struct prefix *pp = &p; | |
3227 | afi_t afi = 0; | |
3228 | safi_t safi = 0; | |
3229 | ||
3230 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 3231 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 3232 | |
2dbe669b | 3233 | if (bgp_debug_zebra(NULL)) |
996c9314 | 3234 | zlog_debug( |
2dbe669b DA |
3235 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
3236 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
3237 | parent_pi->flags); | |
1eb88002 | 3238 | |
d3135ba3 | 3239 | /* Locate route within the VRF. */ |
3240 | /* NOTE: There is no RD here. */ | |
3714a385 | 3241 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 3242 | afi = AFI_IP; |
3243 | safi = SAFI_UNICAST; | |
9bcb3eef | 3244 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3245 | } else { |
3246 | afi = AFI_IP6; | |
3247 | safi = SAFI_UNICAST; | |
9bcb3eef | 3248 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3249 | } |
3250 | ||
9bcb3eef | 3251 | if (!dest) |
d3135ba3 | 3252 | return 0; |
3253 | ||
3254 | /* Find matching route entry. */ | |
9bcb3eef | 3255 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3256 | if (pi->extra |
3257 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 3258 | break; |
3259 | ||
e71ad4b6 DA |
3260 | if (!pi) { |
3261 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 3262 | return 0; |
e71ad4b6 | 3263 | } |
d3135ba3 | 3264 | |
5f0c5ec8 | 3265 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
3266 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
3267 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
3268 | pi->flags); | |
5f0c5ec8 | 3269 | |
7452e879 | 3270 | /* Process for route leaking. */ |
3271 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
3272 | ||
9bcb3eef | 3273 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 3274 | safi); |
4c7a11d5 | 3275 | |
d3135ba3 | 3276 | /* Mark entry for deletion */ |
9bcb3eef | 3277 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 3278 | |
090efa2f AK |
3279 | /* Unlink path to evpn nexthop */ |
3280 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
3281 | ||
d3135ba3 | 3282 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3283 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 3284 | |
3285 | /* Unlock route node. */ | |
9bcb3eef | 3286 | bgp_dest_unlock_node(dest); |
d3135ba3 | 3287 | |
3288 | return ret; | |
3289 | } | |
3290 | ||
128ea8ab | 3291 | /* |
852d9f97 SW |
3292 | * Install route entry into the VNI routing tables. |
3293 | */ | |
3294 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, | |
3295 | const struct prefix_evpn *p, | |
3296 | struct bgp_path_info *parent_pi) | |
3297 | { | |
3298 | int ret = 0; | |
3299 | ||
3300 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) | |
3301 | zlog_debug( | |
3302 | "%s (%u): Installing EVPN %pFX route in VNI %u IP/MAC table", | |
3303 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3304 | ||
3305 | ret = install_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); | |
3306 | ||
3307 | if (ret) { | |
3308 | flog_err( | |
3309 | EC_BGP_EVPN_FAIL, | |
3310 | "%s (%u): Failed to install EVPN %pFX route in VNI %u MAC table", | |
3311 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3312 | ||
3313 | return ret; | |
3314 | } | |
3315 | ||
3316 | ret = install_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); | |
3317 | ||
3318 | if (ret) { | |
3319 | flog_err( | |
3320 | EC_BGP_EVPN_FAIL, | |
3321 | "%s (%u): Failed to install EVPN %pFX route in VNI %u IP table", | |
3322 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3323 | ||
3324 | return ret; | |
3325 | } | |
3326 | ||
3327 | return ret; | |
3328 | } | |
3329 | ||
3330 | /* | |
3331 | * Uninstall route entry from the VNI routing tables. | |
128ea8ab | 3332 | */ |
d62a17ae | 3333 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 3334 | const struct prefix_evpn *p, |
40381db7 | 3335 | struct bgp_path_info *parent_pi) |
128ea8ab | 3336 | { |
852d9f97 | 3337 | int ret = 0; |
c44ab6f1 | 3338 | |
852d9f97 SW |
3339 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) |
3340 | zlog_debug( | |
3341 | "%s (%u): Uninstalling EVPN %pFX route from VNI %u IP/MAC table", | |
3342 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3343 | |
852d9f97 | 3344 | ret = uninstall_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); |
128ea8ab | 3345 | |
852d9f97 SW |
3346 | if (ret) { |
3347 | flog_err( | |
3348 | EC_BGP_EVPN_FAIL, | |
3349 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u IP table", | |
3350 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3351 | |
852d9f97 | 3352 | return ret; |
e71ad4b6 | 3353 | } |
128ea8ab | 3354 | |
852d9f97 | 3355 | ret = uninstall_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); |
128ea8ab | 3356 | |
852d9f97 SW |
3357 | if (ret) { |
3358 | flog_err( | |
3359 | EC_BGP_EVPN_FAIL, | |
3360 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u MAC table", | |
3361 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
9c7edc03 | 3362 | |
852d9f97 SW |
3363 | return ret; |
3364 | } | |
128ea8ab | 3365 | |
d62a17ae | 3366 | return ret; |
128ea8ab | 3367 | } |
3368 | ||
5ba238b7 MK |
3369 | /* |
3370 | * Given a route entry and a VRF, see if this route entry should be | |
3371 | * imported into the VRF i.e., RTs match. | |
3372 | */ | |
4b7e6066 | 3373 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 3374 | struct bgp_path_info *pi) |
5ba238b7 | 3375 | { |
40381db7 | 3376 | struct attr *attr = pi->attr; |
5ba238b7 | 3377 | struct ecommunity *ecom; |
f6e07e1b | 3378 | uint32_t i; |
5ba238b7 MK |
3379 | |
3380 | assert(attr); | |
3381 | /* Route should have valid RT to be even considered. */ | |
3382 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3383 | return 0; | |
3384 | ||
b53e67a3 | 3385 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
3386 | if (!ecom || !ecom->size) |
3387 | return 0; | |
3388 | ||
3389 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3390 | * matches, we're done. | |
3391 | */ | |
3392 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3393 | uint8_t *pnt; |
3394 | uint8_t type, sub_type; | |
5ba238b7 MK |
3395 | struct ecommunity_val *eval; |
3396 | struct ecommunity_val eval_tmp; | |
3397 | struct vrf_irt_node *irt; | |
3398 | ||
3399 | /* Only deal with RTs */ | |
34540b0d | 3400 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 3401 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3402 | + (i * ecom->unit_size)); |
5ba238b7 MK |
3403 | type = *pnt++; |
3404 | sub_type = *pnt++; | |
3405 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3406 | continue; | |
3407 | ||
3408 | /* See if this RT matches specified VNIs import RTs */ | |
3409 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 3410 | if (irt) |
5ba238b7 MK |
3411 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3412 | return 1; | |
3413 | ||
3414 | /* Also check for non-exact match. In this, we mask out the AS | |
3415 | * and | |
3416 | * only check on the local-admin sub-field. This is to | |
3417 | * facilitate using | |
3418 | * VNI as the RT for EBGP peering too. | |
3419 | */ | |
3420 | irt = NULL; | |
3421 | if (type == ECOMMUNITY_ENCODE_AS | |
3422 | || type == ECOMMUNITY_ENCODE_AS4 | |
3423 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3424 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
3425 | mask_ecom_global_admin(&eval_tmp, eval); |
3426 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3427 | } | |
5d9cbca2 | 3428 | if (irt) |
5ba238b7 MK |
3429 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3430 | return 1; | |
3431 | } | |
3432 | ||
3433 | return 0; | |
3434 | } | |
3435 | ||
128ea8ab | 3436 | /* |
3437 | * Given a route entry and a VNI, see if this route entry should be | |
3438 | * imported into the VNI i.e., RTs match. | |
3439 | */ | |
d62a17ae | 3440 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3441 | struct bgp_path_info *pi) |
d62a17ae | 3442 | { |
40381db7 | 3443 | struct attr *attr = pi->attr; |
d62a17ae | 3444 | struct ecommunity *ecom; |
f6e07e1b | 3445 | uint32_t i; |
d62a17ae | 3446 | |
3447 | assert(attr); | |
3448 | /* Route should have valid RT to be even considered. */ | |
3449 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3450 | return 0; | |
3451 | ||
b53e67a3 | 3452 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3453 | if (!ecom || !ecom->size) |
3454 | return 0; | |
3455 | ||
3456 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3457 | * matches, we're done. | |
3458 | */ | |
3459 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3460 | uint8_t *pnt; |
3461 | uint8_t type, sub_type; | |
d62a17ae | 3462 | struct ecommunity_val *eval; |
3463 | struct ecommunity_val eval_tmp; | |
3464 | struct irt_node *irt; | |
3465 | ||
3466 | /* Only deal with RTs */ | |
34540b0d | 3467 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3468 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3469 | + (i * ecom->unit_size)); |
d62a17ae | 3470 | type = *pnt++; |
3471 | sub_type = *pnt++; | |
3472 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3473 | continue; | |
3474 | ||
3475 | /* See if this RT matches specified VNIs import RTs */ | |
3476 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3477 | if (irt) |
d62a17ae | 3478 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3479 | return 1; | |
3480 | ||
3481 | /* Also check for non-exact match. In this, we mask out the AS | |
3482 | * and | |
3483 | * only check on the local-admin sub-field. This is to | |
3484 | * facilitate using | |
3485 | * VNI as the RT for EBGP peering too. | |
3486 | */ | |
3487 | irt = NULL; | |
3488 | if (type == ECOMMUNITY_ENCODE_AS | |
3489 | || type == ECOMMUNITY_ENCODE_AS4 | |
3490 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3491 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 3492 | mask_ecom_global_admin(&eval_tmp, eval); |
3493 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3494 | } | |
b1ab0dfe | 3495 | if (irt) |
d62a17ae | 3496 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3497 | return 1; | |
3498 | } | |
3499 | ||
3500 | return 0; | |
128ea8ab | 3501 | } |
3502 | ||
47bf0432 CS |
3503 | /* This API will scan evpn routes for checking attribute's rmac |
3504 | * macthes with bgp instance router mac. It avoid installing | |
3505 | * route into bgp vrf table and remote rmac in bridge table. | |
3506 | */ | |
3507 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3508 | const struct prefix_evpn *evp, |
47bf0432 CS |
3509 | struct bgp_path_info *pi) |
3510 | { | |
3511 | /* evpn route could have learnt prior to L3vni has come up, | |
3512 | * perform rmac check before installing route and | |
3513 | * remote router mac. | |
3514 | * The route will be removed from global bgp table once | |
3515 | * SVI comes up with MAC and stored in hash, triggers | |
3516 | * bgp_mac_rescan_all_evpn_tables. | |
3517 | */ | |
05864da7 | 3518 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 3519 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
3520 | char attr_str[BUFSIZ] = {0}; |
3521 | ||
5022c833 | 3522 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 3523 | |
2dbe669b DA |
3524 | zlog_debug( |
3525 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
3526 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
3527 | } |
3528 | ||
3529 | return 1; | |
3530 | } | |
3531 | ||
3532 | return 0; | |
3533 | } | |
3534 | ||
bbc57c6c AK |
3535 | /* don't import hosts that are locally attached */ |
3536 | static inline bool | |
36dd4574 AK |
3537 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
3538 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
3539 | struct bgp_path_info *pi, int install) |
3540 | { | |
26c03e43 | 3541 | esi_t *esi; |
bbc57c6c | 3542 | |
26c03e43 AK |
3543 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3544 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
3545 | ||
3546 | /* Don't import routes that point to a local destination */ | |
3547 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
3548 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
3549 | char esi_buf[ESI_STR_LEN]; | |
3550 | ||
3551 | zlog_debug( | |
3552 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
3553 | install ? "import" : "unimport", evp, | |
3554 | esi_to_str(esi, esi_buf, | |
3555 | sizeof(esi_buf))); | |
3556 | } | |
3557 | return true; | |
3558 | } | |
58bff4d1 AK |
3559 | } |
3560 | return false; | |
3561 | } | |
26c03e43 | 3562 | |
58bff4d1 AK |
3563 | /* |
3564 | * Install or uninstall a mac-ip route in the provided vrf if | |
3565 | * there is a rt match | |
3566 | */ | |
3567 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3568 | struct bgp_path_info *pi, | |
3569 | int install) | |
3570 | { | |
3571 | int ret = 0; | |
3572 | const struct prefix_evpn *evp = | |
3573 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3574 | ||
3575 | /* Consider "valid" remote routes applicable for | |
3576 | * this VRF. | |
3577 | */ | |
3578 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3579 | && pi->type == ZEBRA_ROUTE_BGP | |
3580 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3581 | return 0; | |
3582 | ||
58bff4d1 AK |
3583 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3584 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3585 | return 0; | |
3586 | ||
74efb822 | 3587 | /* don't import hosts that are locally attached */ |
e57e63eb | 3588 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3589 | bgp_vrf, evp, pi, install)) | |
3590 | return 0; | |
3591 | ||
3592 | if (install) | |
58bff4d1 | 3593 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3594 | else |
58bff4d1 AK |
3595 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3596 | pi); | |
26c03e43 | 3597 | |
58bff4d1 AK |
3598 | if (ret) |
3599 | flog_err(EC_BGP_EVPN_FAIL, | |
3600 | "Failed to %s EVPN %pFX route in VRF %s", | |
3601 | install ? "install" : "uninstall", evp, | |
3602 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3603 | } |
58bff4d1 AK |
3604 | |
3605 | return ret; | |
bbc57c6c AK |
3606 | } |
3607 | ||
5ba238b7 MK |
3608 | /* |
3609 | * Install or uninstall mac-ip routes are appropriate for this | |
3610 | * particular VRF. | |
3611 | */ | |
996c9314 | 3612 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3613 | { |
3614 | afi_t afi; | |
3615 | safi_t safi; | |
9bcb3eef | 3616 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3617 | struct bgp_table *table; |
40381db7 | 3618 | struct bgp_path_info *pi; |
5ba238b7 | 3619 | int ret; |
5e53dce3 | 3620 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3621 | |
3622 | afi = AFI_L2VPN; | |
3623 | safi = SAFI_EVPN; | |
5e53dce3 T |
3624 | bgp_evpn = bgp_get_evpn(); |
3625 | if (!bgp_evpn) | |
5ba238b7 MK |
3626 | return -1; |
3627 | ||
3628 | /* Walk entire global routing table and evaluate routes which could be | |
3629 | * imported into this VRF. Note that we need to loop through all global | |
3630 | * routes to determine which route matches the import rt on vrf | |
3631 | */ | |
9bcb3eef DS |
3632 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3633 | rd_dest = bgp_route_next(rd_dest)) { | |
3634 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3635 | if (!table) |
3636 | continue; | |
3637 | ||
9bcb3eef DS |
3638 | for (dest = bgp_table_top(table); dest; |
3639 | dest = bgp_route_next(dest)) { | |
3640 | const struct prefix_evpn *evp = | |
3641 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3642 | dest); | |
5ba238b7 | 3643 | |
1eb88002 | 3644 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3645 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3646 | || evp->prefix.route_type | |
3647 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3648 | continue; |
3649 | ||
1eb88002 | 3650 | /* if not a mac+ip route skip this route */ |
3714a385 | 3651 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3652 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3653 | continue; |
3654 | ||
9bcb3eef | 3655 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3656 | pi = pi->next) { |
58bff4d1 AK |
3657 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3658 | bgp_vrf, pi, install); | |
3659 | if (ret) | |
3660 | return ret; | |
5ba238b7 MK |
3661 | } |
3662 | } | |
3663 | } | |
3664 | ||
3665 | return 0; | |
3666 | } | |
3667 | ||
128ea8ab | 3668 | /* |
3669 | * Install or uninstall routes of specified type that are appropriate for this | |
3670 | * particular VNI. | |
3671 | */ | |
d62a17ae | 3672 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3673 | struct bgpevpn *vpn, | |
3674 | bgp_evpn_route_type rtype, | |
3675 | int install) | |
3676 | { | |
0291c246 MK |
3677 | afi_t afi; |
3678 | safi_t safi; | |
9bcb3eef | 3679 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3680 | struct bgp_table *table; |
40381db7 | 3681 | struct bgp_path_info *pi; |
0291c246 | 3682 | int ret; |
d62a17ae | 3683 | |
3684 | afi = AFI_L2VPN; | |
3685 | safi = SAFI_EVPN; | |
3686 | ||
3687 | /* Walk entire global routing table and evaluate routes which could be | |
3688 | * imported into this VPN. Note that we cannot just look at the routes | |
3689 | * for | |
3690 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3691 | * RD. | |
3692 | */ | |
3693 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3694 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3695 | rd_dest = bgp_route_next(rd_dest)) { | |
3696 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3697 | if (!table) |
3698 | continue; | |
3699 | ||
9bcb3eef DS |
3700 | for (dest = bgp_table_top(table); dest; |
3701 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3702 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3703 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3704 | dest); | |
d62a17ae | 3705 | |
3706 | if (evp->prefix.route_type != rtype) | |
3707 | continue; | |
3708 | ||
9bcb3eef | 3709 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3710 | pi = pi->next) { |
d62a17ae | 3711 | /* Consider "valid" remote routes applicable for |
3712 | * this VNI. */ | |
40381db7 DS |
3713 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3714 | && pi->type == ZEBRA_ROUTE_BGP | |
3715 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3716 | continue; |
3717 | ||
40381db7 | 3718 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3719 | if (install) |
3720 | ret = install_evpn_route_entry( | |
40381db7 | 3721 | bgp, vpn, evp, pi); |
d62a17ae | 3722 | else |
3723 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3724 | bgp, vpn, evp, pi); |
d62a17ae | 3725 | |
3726 | if (ret) { | |
af4c2728 | 3727 | flog_err( |
e50f7cfd | 3728 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3729 | "%u: Failed to %s EVPN %s route in VNI %u", |
3730 | bgp->vrf_id, | |
3731 | install ? "install" | |
3732 | : "uninstall", | |
3733 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3734 | ? "MACIP" | |
3735 | : "IMET", | |
3736 | vpn->vni); | |
dc52bece DS |
3737 | |
3738 | bgp_dest_unlock_node(rd_dest); | |
3739 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3740 | return ret; |
3741 | } | |
3742 | } | |
3743 | } | |
3744 | } | |
3745 | } | |
3746 | ||
3747 | return 0; | |
128ea8ab | 3748 | } |
3749 | ||
5ba238b7 | 3750 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3751 | * is invoked upon l3vni-add or l3vni import rt change |
3752 | */ | |
5ba238b7 MK |
3753 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3754 | { | |
3755 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3756 | return 0; | |
3757 | } | |
3758 | ||
128ea8ab | 3759 | /* |
3760 | * Install any existing remote routes applicable for this VNI into its | |
3761 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3762 | * RT is changed. | |
3763 | */ | |
d62a17ae | 3764 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3765 | { |
d62a17ae | 3766 | int ret; |
128ea8ab | 3767 | |
d62a17ae | 3768 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3769 | * for this VNI. | |
3770 | */ | |
3771 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3772 | 1); | |
3773 | if (ret) | |
3774 | return ret; | |
128ea8ab | 3775 | |
c44ab6f1 AK |
3776 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3777 | 1); | |
3778 | if (ret) | |
3779 | return ret; | |
3780 | ||
d62a17ae | 3781 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3782 | 1); | |
128ea8ab | 3783 | } |
3784 | ||
5ba238b7 MK |
3785 | /* uninstall routes from l3vni vrf. */ |
3786 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3787 | { | |
3788 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3789 | return 0; | |
3790 | } | |
3791 | ||
90e60aa7 | 3792 | /* |
3793 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3794 | * this is invoked is upon an import RT change. | |
3795 | */ | |
d62a17ae | 3796 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3797 | { |
d62a17ae | 3798 | int ret; |
90e60aa7 | 3799 | |
d62a17ae | 3800 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3801 | * applicable | |
3802 | * for this VNI. | |
3803 | */ | |
3804 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3805 | 0); | |
3806 | if (ret) | |
3807 | return ret; | |
90e60aa7 | 3808 | |
c44ab6f1 | 3809 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3810 | 0); |
c44ab6f1 AK |
3811 | if (ret) |
3812 | return ret; | |
3813 | ||
3814 | ||
d62a17ae | 3815 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3816 | 0); | |
90e60aa7 | 3817 | } |
3818 | ||
d3135ba3 | 3819 | /* |
3820 | * Install or uninstall route in matching VRFs (list). | |
3821 | */ | |
3822 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3823 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3824 | struct bgp_path_info *pi, |
d3135ba3 | 3825 | struct list *vrfs, int install) |
3826 | { | |
d3135ba3 | 3827 | struct bgp *bgp_vrf; |
3828 | struct listnode *node, *nnode; | |
3829 | ||
90264d64 | 3830 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3831 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3832 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3833 | return 0; |
3834 | ||
90264d64 | 3835 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3836 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3837 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3838 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3839 | return 0; |
3840 | ||
d3135ba3 | 3841 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3842 | int ret; | |
3843 | ||
36dd4574 | 3844 | /* don't import hosts that are locally attached */ |
e57e63eb | 3845 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3846 | bgp_vrf, evp, pi, install)) | |
3847 | return 0; | |
3848 | ||
3849 | if (install) | |
40381db7 | 3850 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3851 | else |
996c9314 | 3852 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3853 | pi); |
d3135ba3 | 3854 | |
3855 | if (ret) { | |
e50f7cfd | 3856 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3857 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3858 | bgp_def->vrf_id, |
2dbe669b | 3859 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3860 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3861 | return ret; |
3862 | } | |
3863 | } | |
3864 | ||
3865 | return 0; | |
3866 | } | |
3867 | ||
128ea8ab | 3868 | /* |
3869 | * Install or uninstall route in matching VNIs (list). | |
3870 | */ | |
d62a17ae | 3871 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3872 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3873 | struct bgp_path_info *pi, |
d62a17ae | 3874 | struct list *vnis, int install) |
128ea8ab | 3875 | { |
d62a17ae | 3876 | struct bgpevpn *vpn; |
3877 | struct listnode *node, *nnode; | |
128ea8ab | 3878 | |
d62a17ae | 3879 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3880 | int ret; | |
128ea8ab | 3881 | |
d62a17ae | 3882 | if (!is_vni_live(vpn)) |
3883 | continue; | |
128ea8ab | 3884 | |
d62a17ae | 3885 | if (install) |
40381db7 | 3886 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3887 | else |
40381db7 | 3888 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3889 | |
d62a17ae | 3890 | if (ret) { |
1c50c1c0 QY |
3891 | flog_err(EC_BGP_EVPN_FAIL, |
3892 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3893 | bgp->vrf_id, install ? "install" : "uninstall", | |
3894 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3895 | ? "MACIP" | |
3896 | : "IMET", | |
3897 | vpn->vni); | |
d62a17ae | 3898 | return ret; |
3899 | } | |
3900 | } | |
128ea8ab | 3901 | |
d62a17ae | 3902 | return 0; |
128ea8ab | 3903 | } |
3904 | ||
3905 | /* | |
50f74cf1 | 3906 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3907 | */ |
26c03e43 AK |
3908 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3909 | safi_t safi, const struct prefix *p, | |
3910 | struct bgp_path_info *pi, | |
3911 | int import, bool in_vni_rt, | |
3912 | bool in_vrf_rt) | |
d62a17ae | 3913 | { |
3914 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3915 | struct attr *attr = pi->attr; |
d62a17ae | 3916 | struct ecommunity *ecom; |
f6e07e1b | 3917 | uint32_t i; |
c44ab6f1 | 3918 | struct prefix_evpn ad_evp; |
d62a17ae | 3919 | |
3920 | assert(attr); | |
3921 | ||
fff7545a | 3922 | /* Only type-1, type-2, type-3, type-4 and type-5 |
3923 | * are supported currently | |
3924 | */ | |
d62a17ae | 3925 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3926 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3927 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3928 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3929 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3930 | return 0; |
3931 | ||
3932 | /* If we don't have Route Target, nothing much to do. */ | |
3933 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3934 | return 0; | |
3935 | ||
c44ab6f1 AK |
3936 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3937 | * we need to create a different copy for the VNI | |
3938 | */ | |
3939 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
852d9f97 SW |
3940 | evp = evpn_type1_prefix_vni_ip_copy(&ad_evp, evp, |
3941 | attr->nexthop); | |
c44ab6f1 | 3942 | |
b53e67a3 | 3943 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3944 | if (!ecom || !ecom->size) |
3945 | return -1; | |
3946 | ||
50f74cf1 | 3947 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3948 | * attached to the route */ | |
d62a17ae | 3949 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3950 | uint8_t *pnt; |
3951 | uint8_t type, sub_type; | |
d62a17ae | 3952 | struct ecommunity_val *eval; |
3953 | struct ecommunity_val eval_tmp; | |
996c9314 | 3954 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3955 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3956 | struct bgp_evpn_es *es; |
d62a17ae | 3957 | |
3958 | /* Only deal with RTs */ | |
34540b0d | 3959 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3960 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3961 | + (i * ecom->unit_size)); |
d62a17ae | 3962 | type = *pnt++; |
3963 | sub_type = *pnt++; | |
3964 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3965 | continue; | |
3966 | ||
58bff4d1 AK |
3967 | /* non-local MAC-IP routes in the global route table are linked |
3968 | * to the destination ES | |
3969 | */ | |
3970 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3971 | bgp_evpn_path_es_link(pi, 0, | |
3972 | bgp_evpn_attr_get_esi(pi->attr)); | |
3973 | ||
50f74cf1 | 3974 | /* |
3975 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3976 | * IMET route is imported into VNI table. | |
3977 | * prefix routes are imported into VRF table. | |
523cafc4 | 3978 | */ |
50f74cf1 | 3979 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3980 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3981 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3982 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3983 | |
26c03e43 | 3984 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3985 | if (irt) |
40381db7 DS |
3986 | install_uninstall_route_in_vnis( |
3987 | bgp, afi, safi, evp, pi, irt->vnis, | |
3988 | import); | |
50f74cf1 | 3989 | |
26c03e43 | 3990 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3991 | if (vrf_irt) |
40381db7 DS |
3992 | install_uninstall_route_in_vrfs( |
3993 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3994 | import); | |
50f74cf1 | 3995 | |
3996 | /* Also check for non-exact match. | |
3997 | * In this, we mask out the AS and | |
3998 | * only check on the local-admin sub-field. | |
3999 | * This is to facilitate using | |
4000 | * VNI as the RT for EBGP peering too. | |
4001 | */ | |
4002 | irt = NULL; | |
4003 | vrf_irt = NULL; | |
4004 | if (type == ECOMMUNITY_ENCODE_AS | |
4005 | || type == ECOMMUNITY_ENCODE_AS4 | |
4006 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 4007 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 4008 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
4009 | if (in_vni_rt) |
4010 | irt = lookup_import_rt(bgp, &eval_tmp); | |
4011 | if (in_vrf_rt) | |
4012 | vrf_irt = | |
4013 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 4014 | } |
4015 | ||
4016 | if (irt) | |
40381db7 DS |
4017 | install_uninstall_route_in_vnis( |
4018 | bgp, afi, safi, evp, pi, irt->vnis, | |
4019 | import); | |
50f74cf1 | 4020 | if (vrf_irt) |
40381db7 DS |
4021 | install_uninstall_route_in_vrfs( |
4022 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
4023 | import); | |
50f74cf1 | 4024 | } |
4025 | ||
4026 | /* es route is imported into the es table */ | |
4027 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
4028 | ||
4029 | /* we will match based on the entire esi to avoid | |
fff7545a | 4030 | * import of an es route for esi2 into esi1 |
50f74cf1 | 4031 | */ |
c44ab6f1 | 4032 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 4033 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 4034 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 4035 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 4036 | } |
d62a17ae | 4037 | } |
4038 | ||
4039 | return 0; | |
128ea8ab | 4040 | } |
4041 | ||
26c03e43 AK |
4042 | /* |
4043 | * Install or uninstall route for appropriate VNIs/ESIs. | |
4044 | */ | |
4045 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
4046 | const struct prefix *p, | |
4047 | struct bgp_path_info *pi, int import) | |
4048 | { | |
4049 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
4050 | true, true); | |
4051 | } | |
4052 | ||
74efb822 AK |
4053 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
4054 | { | |
4055 | struct bgp *bgp_evpn; | |
4056 | ||
4057 | bgp_evpn = bgp_get_evpn(); | |
4058 | if (!bgp_evpn) | |
4059 | return; | |
4060 | ||
4061 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
4062 | &pi->net->p, pi, import); | |
4063 | } | |
4064 | ||
2bb9eff4 DS |
4065 | /* |
4066 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
4067 | * routes | |
4068 | */ | |
80b140af MK |
4069 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
4070 | { | |
5fd9c12b KA |
4071 | /* Delete ipv4 default route and withdraw from peers */ |
4072 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4073 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4074 | SAFI_UNICAST, false); | |
4075 | ||
80b140af | 4076 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
4077 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4078 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4079 | |
5fd9c12b KA |
4080 | /* Delete ipv6 default route and withdraw from peers */ |
4081 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4082 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4083 | SAFI_UNICAST, false); | |
4084 | ||
80b140af | 4085 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
4086 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4087 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
4088 | } |
4089 | ||
2bb9eff4 DS |
4090 | /* |
4091 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
4092 | * routes | |
4093 | */ | |
5394a276 | 4094 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 4095 | { |
5394a276 CS |
4096 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
4097 | ||
4098 | bgp_evpn = bgp_get_evpn(); | |
4099 | if (!bgp_evpn) | |
4100 | return; | |
4101 | ||
80b140af | 4102 | /* update all ipv4 routes */ |
fdf19f06 MK |
4103 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4104 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4105 | |
5fd9c12b KA |
4106 | /* update ipv4 default route and withdraw from peers */ |
4107 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4108 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4109 | SAFI_UNICAST, true); | |
4110 | ||
80b140af | 4111 | /* update all ipv6 routes */ |
fdf19f06 MK |
4112 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4113 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
4114 | |
4115 | /* update ipv6 default route and withdraw from peers */ | |
4116 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4117 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4118 | SAFI_UNICAST, true); | |
4119 | ||
80b140af MK |
4120 | } |
4121 | ||
676f83b9 | 4122 | /* |
4123 | * update and advertise local routes for a VRF as type-5 routes. | |
4124 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
4125 | * done in the global route table using the routes which already exist in the | |
4126 | * VRF routing table | |
4127 | */ | |
80b140af | 4128 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4129 | { |
80b140af MK |
4130 | /* skip if the RD is configured */ |
4131 | if (is_vrf_rd_configured(bgp_vrf)) | |
4132 | return; | |
4133 | ||
4134 | /* derive the RD for the VRF based on new router-id */ | |
4135 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
4136 | ||
4137 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
4138 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 4139 | } |
4140 | ||
4141 | /* | |
4142 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
4143 | * This is invoked upon VRF RD change. The processing is done only from global | |
4144 | * table. | |
4145 | */ | |
80b140af | 4146 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4147 | { |
80b140af MK |
4148 | /* skip if the RD is configured */ |
4149 | if (is_vrf_rd_configured(bgp_vrf)) | |
4150 | return; | |
4151 | ||
4152 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
4153 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 4154 | } |
4155 | ||
852d9f97 SW |
4156 | static void update_advertise_vni_route(struct bgp *bgp, struct bgpevpn *vpn, |
4157 | struct bgp_dest *dest) | |
4158 | { | |
4159 | struct bgp_dest *global_dest; | |
4160 | struct bgp_path_info *pi, *global_pi; | |
4161 | struct attr *attr; | |
4162 | afi_t afi = AFI_L2VPN; | |
4163 | safi_t safi = SAFI_EVPN; | |
4164 | ||
4165 | struct prefix_evpn tmp_evp; | |
4166 | const struct prefix_evpn *evp = | |
4167 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
4168 | ||
4169 | /* | |
4170 | * We have already processed type-3 routes. | |
4171 | * Process only type-1 and type-2 routes here. | |
4172 | */ | |
4173 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE && | |
4174 | evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
4175 | return; | |
4176 | ||
4177 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
4178 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP && | |
4179 | pi->sub_type == BGP_ROUTE_STATIC) | |
4180 | break; | |
4181 | if (!pi) | |
4182 | return; | |
4183 | ||
4184 | /* | |
4185 | * VNI table MAC-IP prefixes don't have MAC so make sure it's | |
4186 | * set from path info here. | |
4187 | */ | |
4188 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4189 | if (is_evpn_prefix_ipaddr_none(evp)) { | |
4190 | /* VNI MAC -> Global */ | |
4191 | evpn_type2_prefix_global_copy( | |
4192 | &tmp_evp, evp, NULL /* mac */, | |
4193 | evpn_type2_path_info_get_ip(pi)); | |
4194 | } else { | |
4195 | /* VNI IP -> Global */ | |
4196 | evpn_type2_prefix_global_copy( | |
4197 | &tmp_evp, evp, evpn_type2_path_info_get_mac(pi), | |
4198 | NULL /* ip */); | |
4199 | } | |
4200 | } else { | |
4201 | memcpy(&tmp_evp, evp, sizeof(tmp_evp)); | |
4202 | } | |
4203 | ||
4204 | /* Create route in global routing table using this route entry's | |
4205 | * attribute. | |
4206 | */ | |
4207 | attr = pi->attr; | |
4208 | global_dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, | |
4209 | &tmp_evp, &vpn->prd, NULL); | |
4210 | assert(global_dest); | |
4211 | ||
4212 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4213 | /* Type-2 route */ | |
4214 | update_evpn_route_entry( | |
4215 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
4216 | NULL /* ip */, 1, &global_pi, 0, | |
4217 | mac_mobility_seqnum(attr), false /* setup_sync */, | |
4218 | NULL /* old_is_sync */); | |
4219 | } else { | |
4220 | /* Type-1 route */ | |
4221 | struct bgp_evpn_es *es; | |
4222 | int route_changed = 0; | |
4223 | ||
4224 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
4225 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, global_dest, | |
4226 | attr, &global_pi, &route_changed); | |
4227 | } | |
4228 | ||
4229 | /* Schedule for processing and unlock node. */ | |
4230 | bgp_process(bgp, global_dest, afi, safi); | |
4231 | bgp_dest_unlock_node(global_dest); | |
4232 | } | |
4233 | ||
90e60aa7 | 4234 | /* |
4235 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
4236 | * change. Note that the processing is done only on the global route table | |
4237 | * using routes that already exist in the per-VNI table. | |
4238 | */ | |
852d9f97 | 4239 | static void update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 4240 | { |
4241 | struct prefix_evpn p; | |
9bcb3eef | 4242 | struct bgp_dest *dest, *global_dest; |
852d9f97 | 4243 | struct bgp_path_info *pi; |
d62a17ae | 4244 | struct attr *attr; |
4245 | afi_t afi = AFI_L2VPN; | |
4246 | safi_t safi = SAFI_EVPN; | |
4247 | ||
4248 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
4249 | * attributes to create and advertise the type-3 route for this VNI | |
4250 | * in the global table. | |
fd069644 DS |
4251 | * |
4252 | * RT-3 only if doing head-end replication | |
d62a17ae | 4253 | */ |
833b8a50 AK |
4254 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
4255 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 4256 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
852d9f97 | 4257 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
9bcb3eef | 4258 | if (!dest) /* unexpected */ |
852d9f97 | 4259 | return; |
9bcb3eef | 4260 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
4261 | if (pi->peer == bgp->peer_self && |
4262 | pi->type == ZEBRA_ROUTE_BGP | |
4263 | && pi->sub_type == BGP_ROUTE_STATIC) | |
4264 | break; | |
fd43ffd9 DA |
4265 | if (!pi) { |
4266 | bgp_dest_unlock_node(dest); | |
852d9f97 | 4267 | return; |
fd43ffd9 | 4268 | } |
852d9f97 | 4269 | |
fd069644 | 4270 | attr = pi->attr; |
d62a17ae | 4271 | |
34c7f35f SW |
4272 | global_dest = bgp_evpn_global_node_get( |
4273 | bgp->rib[afi][safi], afi, safi, &p, &vpn->prd, NULL); | |
4274 | update_evpn_route_entry( | |
4275 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
852d9f97 | 4276 | NULL /* ip */, 1, &pi, 0, mac_mobility_seqnum(attr), |
34c7f35f | 4277 | false /* setup_sync */, NULL /* old_is_sync */); |
d62a17ae | 4278 | |
fd069644 | 4279 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
4280 | bgp_process(bgp, global_dest, afi, safi); |
4281 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 4282 | } |
d62a17ae | 4283 | |
852d9f97 SW |
4284 | /* Now, walk this VNI's MAC & IP route table and use the route and its |
4285 | * attribute to create and schedule route in global table. | |
d62a17ae | 4286 | */ |
852d9f97 SW |
4287 | for (dest = bgp_table_top(vpn->mac_table); dest; |
4288 | dest = bgp_route_next(dest)) | |
4289 | update_advertise_vni_route(bgp, vpn, dest); | |
d62a17ae | 4290 | |
852d9f97 SW |
4291 | for (dest = bgp_table_top(vpn->ip_table); dest; |
4292 | dest = bgp_route_next(dest)) | |
4293 | update_advertise_vni_route(bgp, vpn, dest); | |
90e60aa7 | 4294 | } |
4295 | ||
4296 | /* | |
4297 | * Delete (and withdraw) local routes for a VNI - only from the global | |
4298 | * table. Invoked upon router-id change. | |
4299 | */ | |
d62a17ae | 4300 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4301 | { |
d62a17ae | 4302 | struct prefix_evpn p; |
9bcb3eef | 4303 | struct bgp_dest *global_dest; |
40381db7 | 4304 | struct bgp_path_info *pi; |
d62a17ae | 4305 | afi_t afi = AFI_L2VPN; |
4306 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 4307 | |
d62a17ae | 4308 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
4309 | * for this VNI - from the global table. | |
4310 | */ | |
17151ae9 | 4311 | delete_global_type2_routes(bgp, vpn); |
90e60aa7 | 4312 | |
d62a17ae | 4313 | /* Remove type-3 route for this VNI from global table. */ |
4314 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
34c7f35f SW |
4315 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
4316 | safi, &p, &vpn->prd, NULL); | |
9bcb3eef | 4317 | if (global_dest) { |
d62a17ae | 4318 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 4319 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 4320 | |
d62a17ae | 4321 | /* Schedule for processing - withdraws to peers happen from |
4322 | * this table. | |
4323 | */ | |
40381db7 | 4324 | if (pi) |
9bcb3eef DS |
4325 | bgp_process(bgp, global_dest, afi, safi); |
4326 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 4327 | } |
90e60aa7 | 4328 | |
d60f63f0 AD |
4329 | |
4330 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 4331 | return 0; |
90e60aa7 | 4332 | } |
4333 | ||
2d48ee25 | 4334 | /* |
4335 | * Handle router-id change. Update and advertise local routes corresponding | |
4336 | * to this VNI from peers. Note that this is invoked after updating the | |
4337 | * router-id. The routes in the per-VNI table are used to create routes in | |
4338 | * the global table and schedule them. | |
4339 | */ | |
e3b78da8 | 4340 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4341 | { |
e3b78da8 | 4342 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4343 | |
d62a17ae | 4344 | /* Skip VNIs with configured RD. */ |
4345 | if (is_rd_configured(vpn)) | |
4346 | return; | |
2d48ee25 | 4347 | |
d62a17ae | 4348 | bgp_evpn_derive_auto_rd(bgp, vpn); |
4349 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 4350 | } |
4351 | ||
4352 | /* | |
4353 | * Handle router-id change. Delete and withdraw local routes corresponding | |
4354 | * to this VNI from peers. Note that this is invoked prior to updating | |
4355 | * the router-id and is done only on the global route table, the routes | |
4356 | * are needed in the per-VNI table to re-advertise with new router id. | |
4357 | */ | |
e3b78da8 | 4358 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4359 | { |
e3b78da8 | 4360 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4361 | |
d62a17ae | 4362 | /* Skip VNIs with configured RD. */ |
4363 | if (is_rd_configured(vpn)) | |
4364 | return; | |
2d48ee25 | 4365 | |
d62a17ae | 4366 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 4367 | } |
4368 | ||
fd069644 DS |
4369 | /* |
4370 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
4371 | * This is invoked upon flooding mode changing to head-end replication. | |
4372 | */ | |
e3b78da8 | 4373 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4374 | { |
e3b78da8 | 4375 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4376 | struct bgp *bgp = data; |
4377 | struct prefix_evpn p; | |
4378 | ||
833b8a50 AK |
4379 | if (!vpn || !is_vni_live(vpn) || |
4380 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
4381 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
4382 | return; |
4383 | ||
4384 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 4385 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
4386 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
4387 | "Type3 route creation failure for VNI %u", vpn->vni); | |
4388 | } | |
4389 | ||
4390 | /* | |
4391 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
4392 | * This is invoked upon flooding mode changing to drop BUM packets. | |
4393 | */ | |
e3b78da8 | 4394 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4395 | { |
e3b78da8 | 4396 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4397 | struct bgp *bgp = data; |
4398 | struct prefix_evpn p; | |
4399 | ||
4400 | if (!vpn || !is_vni_live(vpn)) | |
4401 | return; | |
4402 | ||
4403 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4404 | delete_evpn_route(bgp, vpn, &p); | |
4405 | } | |
4406 | ||
128ea8ab | 4407 | /* |
4408 | * Process received EVPN type-2 route (advertise or withdraw). | |
4409 | */ | |
d62a17ae | 4410 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4411 | struct attr *attr, uint8_t *pfx, int psize, |
4412 | uint32_t addpath_id) | |
d62a17ae | 4413 | { |
4414 | struct prefix_rd prd; | |
e121d831 QY |
4415 | struct prefix_evpn p = {}; |
4416 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
4417 | uint8_t ipaddr_len; |
4418 | uint8_t macaddr_len; | |
e121d831 QY |
4419 | /* holds the VNI(s) as in packet */ |
4420 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 4421 | uint32_t num_labels = 0; |
554cd77a | 4422 | uint32_t eth_tag; |
367b458c | 4423 | int ret = 0; |
d62a17ae | 4424 | |
4425 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
4426 | * additional 3 bytes if there is a second label (VNI): | |
4427 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
4428 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
4429 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
4430 | */ | |
4431 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
4432 | && psize != 40 && psize != 52) { | |
e50f7cfd | 4433 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4434 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
4435 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4436 | return -1; |
4437 | } | |
4438 | ||
e121d831 QY |
4439 | struct stream *pkt = stream_new(psize); |
4440 | stream_put(pkt, pfx, psize); | |
554cd77a | 4441 | |
d62a17ae | 4442 | /* Make prefix_rd */ |
4443 | prd.family = AF_UNSPEC; | |
4444 | prd.prefixlen = 64; | |
e121d831 QY |
4445 | |
4446 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 4447 | |
4448 | /* Make EVPN prefix. */ | |
b03b8898 | 4449 | p.family = AF_EVPN; |
50f74cf1 | 4450 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4451 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
4452 | ||
554cd77a | 4453 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 4454 | if (attr) { |
e121d831 QY |
4455 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
4456 | ||
74efb822 | 4457 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
4458 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
4459 | else | |
4460 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
4461 | } else { |
4462 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 4463 | } |
d62a17ae | 4464 | |
554cd77a | 4465 | /* Copy Ethernet Tag */ |
e121d831 | 4466 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 4467 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4468 | |
4469 | /* Get the MAC Addr len */ | |
e121d831 | 4470 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 4471 | |
4472 | /* Get the MAC Addr */ | |
28328ea9 | 4473 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 4474 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 4475 | } else { |
af4c2728 | 4476 | flog_err( |
e50f7cfd | 4477 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4478 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
4479 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 4480 | goto fail; |
d62a17ae | 4481 | } |
4482 | ||
4483 | ||
4484 | /* Get the IP. */ | |
e121d831 QY |
4485 | STREAM_GETC(pkt, ipaddr_len); |
4486 | ||
d62a17ae | 4487 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
4488 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 4489 | flog_err( |
e50f7cfd | 4490 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4491 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
4492 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 4493 | goto fail; |
d62a17ae | 4494 | } |
4495 | ||
4496 | if (ipaddr_len) { | |
4497 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4498 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4499 | ? IPADDR_V4 |
4500 | : IPADDR_V6; | |
e121d831 | 4501 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 4502 | } |
d62a17ae | 4503 | |
b57ba6d2 | 4504 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 4505 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4506 | num_labels++; |
e121d831 | 4507 | |
b57ba6d2 | 4508 | /* Do we have a second VNI? */ |
e121d831 | 4509 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 4510 | num_labels++; |
e121d831 | 4511 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4512 | } |
d62a17ae | 4513 | |
4514 | /* Process the route. */ | |
4515 | if (attr) | |
367b458c DS |
4516 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4517 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4518 | &label[0], num_labels, 0, &evpn); | |
d62a17ae | 4519 | else |
367b458c DS |
4520 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4521 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4522 | &label[0], num_labels, &evpn); | |
e121d831 QY |
4523 | goto done; |
4524 | ||
4525 | fail: | |
4526 | stream_failure: | |
4527 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4528 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
4529 | peer->bgp->vrf_id, peer->host); | |
4530 | ret = -1; | |
4531 | done: | |
4532 | stream_free(pkt); | |
d62a17ae | 4533 | return ret; |
128ea8ab | 4534 | } |
4535 | ||
4536 | /* | |
4537 | * Process received EVPN type-3 route (advertise or withdraw). | |
4538 | */ | |
d62a17ae | 4539 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4540 | struct attr *attr, uint8_t *pfx, int psize, |
4541 | uint32_t addpath_id) | |
d62a17ae | 4542 | { |
4543 | struct prefix_rd prd; | |
4544 | struct prefix_evpn p; | |
d7c0a89a | 4545 | uint8_t ipaddr_len; |
554cd77a | 4546 | uint32_t eth_tag; |
d62a17ae | 4547 | |
4548 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4549 | * IP len (1) and IP (4 or 16). | |
4550 | */ | |
4551 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4552 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4553 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4554 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4555 | return -1; |
4556 | } | |
4557 | ||
7fd077aa | 4558 | /* If PMSI is present, log if it is anything other than IR. |
4559 | * Note: We just simply ignore the values as it is not clear if | |
4560 | * doing anything else is better. | |
4561 | */ | |
4562 | if (attr && | |
4563 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
4564 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
4565 | ||
4566 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
4567 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4568 | flog_warn( | |
4569 | EC_BGP_EVPN_PMSI_PRESENT, | |
4570 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4571 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 4572 | } |
4573 | } | |
4574 | ||
d62a17ae | 4575 | /* Make prefix_rd */ |
4576 | prd.family = AF_UNSPEC; | |
4577 | prd.prefixlen = 64; | |
4578 | memcpy(&prd.val, pfx, 8); | |
4579 | pfx += 8; | |
4580 | ||
4581 | /* Make EVPN prefix. */ | |
6006b807 | 4582 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4583 | p.family = AF_EVPN; |
50f74cf1 | 4584 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4585 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4586 | ||
554cd77a VB |
4587 | /* Copy Ethernet Tag */ |
4588 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4589 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4590 | pfx += 4; |
4591 | ||
4592 | /* Get the IP. */ | |
4593 | ipaddr_len = *pfx++; | |
4594 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4595 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4596 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4597 | } else { |
af4c2728 | 4598 | flog_err( |
e50f7cfd | 4599 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4600 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4601 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4602 | return -1; | |
4603 | } | |
4604 | ||
4605 | /* Process the route. */ | |
4606 | if (attr) | |
367b458c DS |
4607 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4608 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, | |
4609 | 0, 0, NULL); | |
d62a17ae | 4610 | else |
367b458c DS |
4611 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4612 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4613 | NULL, 0, NULL); | |
4614 | return 0; | |
128ea8ab | 4615 | } |
4616 | ||
4617 | /* | |
4618 | * Process received EVPN type-5 route (advertise or withdraw). | |
4619 | */ | |
d62a17ae | 4620 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4621 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4622 | uint32_t addpath_id) |
d62a17ae | 4623 | { |
4624 | struct prefix_rd prd; | |
4625 | struct prefix_evpn p; | |
4626 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4627 | uint8_t ippfx_len; |
4628 | uint32_t eth_tag; | |
b57ba6d2 | 4629 | mpls_label_t label; /* holds the VNI as in the packet */ |
66ff6089 | 4630 | bool is_valid_update = true; |
d62a17ae | 4631 | |
4632 | /* Type-5 route should be 34 or 58 bytes: | |
4633 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4634 | * GW (4 or 16) and VNI (3). | |
4635 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4636 | */ | |
4637 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4638 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4639 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4640 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4641 | return -1; |
4642 | } | |
4643 | ||
4644 | /* Make prefix_rd */ | |
4645 | prd.family = AF_UNSPEC; | |
4646 | prd.prefixlen = 64; | |
4647 | memcpy(&prd.val, pfx, 8); | |
4648 | pfx += 8; | |
4649 | ||
4650 | /* Make EVPN prefix. */ | |
6006b807 | 4651 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4652 | p.family = AF_EVPN; |
50f74cf1 | 4653 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4654 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4655 | ||
4656 | /* Additional information outside of prefix - ESI and GW IP */ | |
4657 | memset(&evpn, 0, sizeof(evpn)); | |
4658 | ||
66ff6089 | 4659 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4660 | if (attr) |
66ff6089 | 4661 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4662 | pfx += ESI_BYTES; |
d62a17ae | 4663 | |
4664 | /* Fetch Ethernet Tag. */ | |
4665 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4666 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4667 | pfx += 4; |
4668 | ||
4669 | /* Fetch IP prefix length. */ | |
4670 | ippfx_len = *pfx++; | |
4671 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4672 | flog_err( |
e50f7cfd | 4673 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4674 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4675 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4676 | return -1; | |
4677 | } | |
3714a385 | 4678 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4679 | |
4680 | /* Determine IPv4 or IPv6 prefix */ | |
4681 | /* Since the address and GW are from the same family, this just becomes | |
4682 | * a simple check on the total size. | |
4683 | */ | |
4684 | if (psize == 34) { | |
3714a385 | 4685 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4686 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4687 | pfx += 4; |
860e740b IR |
4688 | SET_IPADDR_V4(&evpn.gw_ip); |
4689 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4690 | pfx += 4; |
d62a17ae | 4691 | } else { |
3714a385 | 4692 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4693 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4694 | IPV6_MAX_BYTELEN); | |
4695 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4696 | SET_IPADDR_V6(&evpn.gw_ip); |
4697 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4698 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4699 | } |
4700 | ||
b57ba6d2 MK |
4701 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4702 | memset(&label, 0, sizeof(label)); | |
4703 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4704 | |
4705 | /* | |
4706 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4707 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4708 | * field | |
6b11bd8d | 4709 | */ |
d62a17ae | 4710 | |
66ff6089 AD |
4711 | /* |
4712 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4713 | * at the same time is should be treated as withdraw | |
4714 | */ | |
860e740b IR |
4715 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4716 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4717 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4718 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4719 | peer->host); | |
4720 | is_valid_update = false; | |
4721 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4722 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4723 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4724 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4725 | if (attr) { |
860e740b IR |
4726 | if (is_zero_mac(&attr->rmac) && |
4727 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4728 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4729 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4730 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4731 | peer->host); | |
c6ec0c74 | 4732 | is_valid_update = false; |
66ff6089 | 4733 | } |
c6ec0c74 KA |
4734 | |
4735 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4736 | is_valid_update = false; | |
4737 | } | |
4738 | ||
d62a17ae | 4739 | /* Process the route. */ |
66ff6089 | 4740 | if (attr && is_valid_update) |
367b458c DS |
4741 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4742 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4743 | &label, 1, 0, &evpn); | |
66ff6089 AD |
4744 | else { |
4745 | if (!is_valid_update) { | |
4746 | char attr_str[BUFSIZ] = {0}; | |
4747 | ||
4748 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4749 | zlog_warn( | |
4750 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4751 | peer->hostname, peer->bgp->vrf_id, &p, | |
4752 | attr_str); | |
4753 | } | |
367b458c DS |
4754 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4755 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4756 | &label, 1, &evpn); | |
66ff6089 | 4757 | } |
d62a17ae | 4758 | |
367b458c | 4759 | return 0; |
d62a17ae | 4760 | } |
4761 | ||
5f040085 DS |
4762 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4763 | const struct prefix_rd *prd, | |
4764 | mpls_label_t *label, uint32_t num_labels, | |
4765 | struct attr *attr) | |
d62a17ae | 4766 | { |
4767 | int len; | |
4768 | char temp[16]; | |
5f040085 | 4769 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4770 | |
b5605493 | 4771 | memset(&temp, 0, sizeof(temp)); |
b03b8898 | 4772 | if (p->family != AF_EVPN) |
d62a17ae | 4773 | return; |
4774 | p_evpn_p = &(p->u.prefix_evpn); | |
4775 | ||
e9fc2840 | 4776 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4777 | IP and GW-IP have to be both ipv4 or ipv6 |
4778 | */ | |
3714a385 | 4779 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4780 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4781 | else |
e9fc2840 | 4782 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4783 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4784 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4785 | stream_put(s, prd->val, 8); | |
6c995628 | 4786 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4787 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4788 | else |
c44ab6f1 | 4789 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4790 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4791 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4792 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4793 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4794 | else |
3714a385 | 4795 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4796 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4797 | const struct bgp_route_evpn *evpn_overlay = |
4798 | bgp_attr_get_evpn_overlay(attr); | |
4799 | ||
3714a385 | 4800 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4801 | stream_put_ipv4(s, |
4802 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4803 | else |
860e740b | 4804 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4805 | } else { |
3714a385 | 4806 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4807 | stream_put_ipv4(s, 0); |
4808 | else | |
4809 | stream_put(s, &temp, 16); | |
4810 | } | |
4811 | ||
b57ba6d2 | 4812 | if (num_labels) |
d62a17ae | 4813 | stream_put(s, label, 3); |
4814 | else | |
4815 | stream_put3(s, 0); | |
128ea8ab | 4816 | } |
4817 | ||
4818 | /* | |
4819 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4820 | */ | |
e3b78da8 | 4821 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4822 | { |
e3b78da8 | 4823 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4824 | |
d62a17ae | 4825 | /* Remove EVPN routes and schedule for processing. */ |
4826 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4827 | |
d62a17ae | 4828 | /* Clear "live" flag and see if hash needs to be freed. */ |
4829 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4830 | if (!is_vni_configured(vpn)) | |
4831 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4832 | } |
4833 | ||
4834 | /* | |
4835 | * Free a VNI entry; iterator function called during cleanup. | |
4836 | */ | |
e3b78da8 | 4837 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4838 | { |
e3b78da8 | 4839 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4840 | |
d62a17ae | 4841 | delete_all_vni_routes(bgp, vpn); |
4842 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4843 | } |
4844 | ||
c581d8b0 MK |
4845 | /* |
4846 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4847 | */ | |
4848 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4849 | { | |
5e53dce3 | 4850 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4851 | |
58d8948c | 4852 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, true); |
10ebe1ab MK |
4853 | |
4854 | /* Map RT to VRF */ | |
5e53dce3 | 4855 | bgp_evpn = bgp_get_evpn(); |
58d8948c | 4856 | |
5e53dce3 | 4857 | if (!bgp_evpn) |
10ebe1ab | 4858 | return; |
58d8948c | 4859 | |
10ebe1ab | 4860 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); |
c581d8b0 MK |
4861 | } |
4862 | ||
4863 | /* | |
4864 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4865 | */ | |
4866 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4867 | { | |
ca337b46 SW |
4868 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, |
4869 | true); | |
c581d8b0 MK |
4870 | } |
4871 | ||
4872 | /* | |
4873 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4874 | */ | |
4875 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4876 | { | |
58d8948c | 4877 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, true); |
c581d8b0 MK |
4878 | } |
4879 | ||
4880 | /* | |
4881 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4882 | */ | |
4883 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4884 | { | |
ca337b46 SW |
4885 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, |
4886 | true); | |
c581d8b0 | 4887 | } |
128ea8ab | 4888 | |
f1f8b53c MK |
4889 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4890 | { | |
5e53dce3 | 4891 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4892 | struct listnode *node = NULL; |
4893 | struct bgpevpn *vpn = NULL; | |
4894 | ||
5e53dce3 T |
4895 | bgp_evpn = bgp_get_evpn(); |
4896 | if (!bgp_evpn) | |
f1f8b53c MK |
4897 | return; |
4898 | ||
4992b4ae MK |
4899 | /* update all type-5 routes */ |
4900 | update_advertise_vrf_routes(bgp_vrf); | |
4901 | ||
4902 | /* update all type-2 routes */ | |
f1f8b53c | 4903 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4904 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4905 | } |
4906 | ||
bf1061d8 VB |
4907 | /* |
4908 | * Handle autort change for a given VNI. | |
4909 | */ | |
e3b78da8 | 4910 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4911 | { |
e3b78da8 | 4912 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4913 | |
bf1061d8 VB |
4914 | if (!is_import_rt_configured(vpn)) { |
4915 | if (is_vni_live(vpn)) | |
4916 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4917 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4918 | list_delete_all_node(vpn->import_rtl); |
4919 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4920 | if (is_vni_live(vpn)) | |
4921 | bgp_evpn_install_routes(bgp, vpn); | |
4922 | } | |
4923 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4924 | list_delete_all_node(vpn->export_rtl); |
4925 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4926 | if (is_vni_live(vpn)) | |
4927 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4928 | } | |
4929 | } | |
4930 | ||
4204021e PG |
4931 | /* |
4932 | * Handle autort change for L3VNI. | |
4933 | */ | |
4934 | static void update_autort_l3vni(struct bgp *bgp) | |
4935 | { | |
4936 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4937 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4938 | return; | |
4939 | ||
4940 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4941 | if (is_l3vni_live(bgp)) | |
4942 | uninstall_routes_for_vrf(bgp); | |
4943 | ||
4944 | /* Cleanup the RT to VRF mapping */ | |
4945 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4946 | ||
4947 | /* Remove auto generated RT */ | |
4948 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4949 | ||
4950 | list_delete_all_node(bgp->vrf_import_rtl); | |
4951 | ||
4952 | /* Map auto derive or configured RTs */ | |
4953 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4954 | } | |
4955 | ||
4956 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4957 | list_delete_all_node(bgp->vrf_export_rtl); | |
4958 | ||
4959 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4960 | ||
4961 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4962 | ||
4963 | if (is_l3vni_live(bgp)) | |
4964 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4965 | } | |
4966 | ||
4967 | if (!is_l3vni_live(bgp)) | |
4968 | return; | |
4969 | ||
4970 | /* advertise type-5 routes if needed */ | |
4971 | update_advertise_vrf_routes(bgp); | |
4972 | ||
4973 | /* install all remote routes belonging to this l3vni | |
4974 | * into corresponding vrf | |
4975 | */ | |
4976 | install_routes_for_vrf(bgp); | |
4977 | } | |
4978 | ||
128ea8ab | 4979 | /* |
4980 | * Public functions. | |
4981 | */ | |
4982 | ||
5424b7ba | 4983 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4984 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4985 | afi_t afi, safi_t safi) |
4986 | { | |
4987 | int ret = 0; | |
4988 | struct prefix_evpn evp; | |
5424b7ba | 4989 | |
31310b25 | 4990 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4991 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4992 | if (ret) |
af4c2728 | 4993 | flog_err( |
e50f7cfd | 4994 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4995 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4996 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4997 | } |
4998 | ||
342dd0c6 | 4999 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 5000 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 5001 | { |
5002 | struct bgp_table *table = NULL; | |
9bcb3eef | 5003 | struct bgp_dest *dest = NULL; |
40381db7 | 5004 | struct bgp_path_info *pi; |
342dd0c6 | 5005 | |
053905d2 | 5006 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5007 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 5008 | /* Only care about "selected" routes. Also ensure that |
5009 | * these are routes that are injectable into EVPN. | |
5010 | */ | |
25f2ca53 | 5011 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 5012 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5013 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5014 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 5015 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 5016 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 5017 | safi); |
25f2ca53 | 5018 | break; |
5019 | } | |
5020 | } | |
5021 | } | |
5424b7ba | 5022 | } |
342dd0c6 | 5023 | |
5fd9c12b KA |
5024 | /* |
5025 | * evpn - enable advertisement of default g/w | |
5026 | */ | |
5027 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
5028 | safi_t safi, bool add) | |
5029 | { | |
5030 | struct prefix ip_prefix; | |
5031 | ||
5032 | /* form the default prefix 0.0.0.0/0 */ | |
6006b807 | 5033 | memset(&ip_prefix, 0, sizeof(ip_prefix)); |
5fd9c12b KA |
5034 | ip_prefix.family = afi2family(afi); |
5035 | ||
5036 | if (add) { | |
5037 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
5038 | NULL, afi, safi); | |
5039 | } else { | |
5040 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
5041 | afi, safi); | |
5042 | } | |
5043 | } | |
5044 | ||
5045 | ||
2f69f6d3 | 5046 | /* |
5047 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
5048 | * to this function correspond to those of the source IP prefix (best | |
5049 | * path in the case of the attr. In the case of a local prefix (when we | |
5050 | * are advertising local subnets), the src_attr will be NULL. | |
5051 | */ | |
bd494ec5 | 5052 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
5053 | struct attr *src_attr, afi_t afi, |
5054 | safi_t safi) | |
5424b7ba MK |
5055 | { |
5056 | int ret = 0; | |
5057 | struct prefix_evpn evp; | |
7c82b312 | 5058 | |
31310b25 | 5059 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 5060 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 5061 | if (ret) |
e50f7cfd | 5062 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
5063 | "%u: Failed to create type-5 route for prefix %pFX", |
5064 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 5065 | } |
5066 | ||
2f69f6d3 | 5067 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
5068 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
5069 | * advertisement is enabled. | |
5070 | */ | |
996c9314 LB |
5071 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
5072 | safi_t safi) | |
342dd0c6 | 5073 | { |
5074 | struct bgp_table *table = NULL; | |
9bcb3eef | 5075 | struct bgp_dest *dest = NULL; |
40381db7 | 5076 | struct bgp_path_info *pi; |
342dd0c6 | 5077 | |
053905d2 | 5078 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5079 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 5080 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 5081 | * attribute. Also, ensure that the route is injectable |
5082 | * into EVPN. | |
2f69f6d3 | 5083 | * TODO: Support for AddPath for EVPN. |
5084 | */ | |
9bcb3eef | 5085 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5086 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5087 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
5088 | |
5089 | /* apply the route-map */ | |
5090 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 5091 | route_map_result_t ret; |
e34291b8 | 5092 | struct bgp_path_info tmp_pi; |
5093 | struct bgp_path_info_extra tmp_pie; | |
5094 | struct attr tmp_attr; | |
5095 | ||
5096 | tmp_attr = *pi->attr; | |
5097 | ||
5098 | /* Fill temp path_info */ | |
9bcb3eef DS |
5099 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
5100 | dest, pi, pi->peer, | |
5101 | &tmp_attr); | |
e34291b8 | 5102 | |
5103 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 5104 | |
996c9314 LB |
5105 | ret = route_map_apply( |
5106 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
5107 | .map, | |
9bcb3eef | 5108 | bgp_dest_get_prefix(dest), |
1782514f | 5109 | &tmp_pi); |
e34291b8 | 5110 | if (ret == RMAP_DENYMATCH) { |
5111 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 5112 | continue; |
e34291b8 | 5113 | } |
5114 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5115 | bgp_vrf, |
9bcb3eef | 5116 | bgp_dest_get_prefix(dest), |
b54892e0 | 5117 | &tmp_attr, afi, safi); |
e34291b8 | 5118 | } else |
5119 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5120 | bgp_vrf, |
9bcb3eef | 5121 | bgp_dest_get_prefix(dest), |
b54892e0 | 5122 | pi->attr, afi, safi); |
2f69f6d3 | 5123 | break; |
5124 | } | |
5125 | } | |
31310b25 | 5126 | } |
342dd0c6 | 5127 | } |
5128 | ||
ca337b46 SW |
5129 | static void rt_list_remove_node(struct list *rt_list, |
5130 | struct ecommunity *ecomdel, bool is_l3) | |
c581d8b0 | 5131 | { |
ca337b46 SW |
5132 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; |
5133 | struct vrf_route_target *l3rt = NULL; | |
5134 | struct ecommunity *ecom = NULL; | |
5135 | ||
ca337b46 SW |
5136 | if (is_l3) { |
5137 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5138 | if (ecommunity_match(l3rt->ecom, ecomdel)) { | |
5139 | evpn_vrf_rt_del(l3rt); | |
5140 | node_to_del = node; | |
5141 | break; | |
5142 | } | |
5143 | } | |
5144 | } else { | |
5145 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, ecom)) { | |
5146 | if (ecommunity_match(ecom, ecomdel)) { | |
5147 | ecommunity_free(&ecom); | |
5148 | node_to_del = node; | |
5149 | break; | |
5150 | } | |
5151 | } | |
5152 | } | |
5153 | ||
58d8948c | 5154 | |
ca337b46 SW |
5155 | if (node_to_del) |
5156 | list_delete_node(rt_list, node_to_del); | |
5157 | } | |
5158 | ||
5159 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl, | |
5160 | bool is_l3) | |
5161 | { | |
5162 | struct ecommunity *ecom_auto; | |
c581d8b0 MK |
5163 | struct ecommunity_val eval; |
5164 | ||
bf1061d8 VB |
5165 | if (bgp->advertise_autort_rfc8365) |
5166 | vni |= EVPN_AUTORT_VXLAN; | |
58d8948c | 5167 | |
c581d8b0 MK |
5168 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
5169 | ||
5170 | ecom_auto = ecommunity_new(); | |
1207a5bc | 5171 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 | 5172 | |
ca337b46 | 5173 | rt_list_remove_node(rtl, ecom_auto, is_l3); |
c581d8b0 MK |
5174 | |
5175 | ecommunity_free(&ecom_auto); | |
5176 | } | |
5177 | ||
58d8948c | 5178 | static void evpn_vrf_rt_routes_map(struct bgp *bgp_vrf) |
c581d8b0 | 5179 | { |
58d8948c SW |
5180 | /* map VRFs to its RTs and install routes matching this new RT */ |
5181 | if (is_l3vni_live(bgp_vrf)) { | |
5182 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5183 | install_routes_for_vrf(bgp_vrf); | |
5184 | } | |
5185 | } | |
ca337b46 | 5186 | |
58d8948c | 5187 | static void evpn_vrf_rt_routes_unmap(struct bgp *bgp_vrf) |
c581d8b0 | 5188 | { |
5ba238b7 | 5189 | /* uninstall routes from vrf */ |
3d0b43d7 | 5190 | if (is_l3vni_live(bgp_vrf)) |
5191 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
5192 | |
5193 | /* Cleanup the RT to VRF mapping */ | |
5194 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
58d8948c | 5195 | } |
10ebe1ab | 5196 | |
58d8948c SW |
5197 | static bool rt_list_has_cfgd_rt(struct list *rt_list) |
5198 | { | |
5199 | struct listnode *node = NULL, *nnode = NULL; | |
5200 | struct vrf_route_target *l3rt = NULL; | |
5201 | ||
5202 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5203 | if (!CHECK_FLAG(l3rt->flags, BGP_VRF_RT_AUTO)) | |
5204 | return true; | |
5205 | } | |
5206 | ||
5207 | return false; | |
5208 | } | |
5209 | ||
5210 | static void unconfigure_import_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5211 | { | |
5212 | if (!bgp_vrf->vrf_import_rtl) | |
5213 | return; /* this should never fail */ | |
5214 | ||
5215 | if (!is_l3vni_live(bgp_vrf)) | |
5216 | return; /* Nothing to do if no vni */ | |
5217 | ||
5218 | /* fall back to auto-generated RT if this was the last RT */ | |
5219 | if (list_isempty(bgp_vrf->vrf_import_rtl)) | |
5220 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5221 | } | |
5222 | ||
5223 | static void unconfigure_export_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5224 | { | |
5225 | ||
5226 | if (!bgp_vrf->vrf_export_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_export_rtl)) | |
5234 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5235 | ||
5236 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5237 | } | |
5238 | ||
5239 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5240 | struct ecommunity *ecomadd, | |
5241 | bool is_wildcard) | |
5242 | { | |
5243 | struct vrf_route_target *newrt; | |
5244 | ||
5245 | newrt = evpn_vrf_rt_new(ecomadd); | |
5246 | ||
5247 | if (is_wildcard) | |
5248 | SET_FLAG(newrt->flags, BGP_VRF_RT_WILD); | |
5249 | ||
5250 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5251 | ||
5252 | /* Remove auto generated RT if not configured */ | |
5253 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5254 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5255 | |
5256 | /* Add the newly configured RT to RT list */ | |
ca337b46 | 5257 | listnode_add_sort(bgp_vrf->vrf_import_rtl, newrt); |
58d8948c | 5258 | |
c581d8b0 MK |
5259 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
5260 | ||
58d8948c SW |
5261 | evpn_vrf_rt_routes_map(bgp_vrf); |
5262 | } | |
5263 | ||
5264 | void bgp_evpn_configure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) | |
5265 | { | |
5266 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5267 | return; /* Already configured */ | |
5268 | ||
5269 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5270 | ||
5271 | if (!is_l3vni_live(bgp_vrf)) | |
5272 | return; /* Wait for VNI before adding rts */ | |
5273 | ||
5274 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5275 | ||
5276 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5277 | ||
5278 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5279 | } |
5280 | ||
5281 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5282 | struct ecommunity *ecomdel) | |
5283 | { | |
58d8948c SW |
5284 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5285 | return; /* Already un-configured */ | |
c581d8b0 | 5286 | |
58d8948c | 5287 | evpn_vrf_rt_routes_unmap(bgp_vrf); |
10ebe1ab | 5288 | |
ca337b46 SW |
5289 | /* Remove rt */ |
5290 | rt_list_remove_node(bgp_vrf->vrf_import_rtl, ecomdel, true); | |
10ebe1ab | 5291 | |
58d8948c | 5292 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_import_rtl)) |
c581d8b0 | 5293 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
c581d8b0 | 5294 | |
58d8948c | 5295 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); |
c581d8b0 | 5296 | |
58d8948c SW |
5297 | evpn_vrf_rt_routes_map(bgp_vrf); |
5298 | } | |
c581d8b0 | 5299 | |
58d8948c SW |
5300 | void bgp_evpn_unconfigure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5301 | { | |
5302 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5303 | return; /* Already un-configured */ | |
5304 | ||
5305 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5306 | ||
5307 | /* remove auto-generated RT */ | |
5308 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
5309 | ||
5310 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5311 | ||
5312 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); | |
5313 | ||
5314 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5315 | } |
5316 | ||
5317 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
5318 | struct ecommunity *ecomadd) | |
5319 | { | |
ca337b46 SW |
5320 | struct vrf_route_target *newrt; |
5321 | ||
5322 | newrt = evpn_vrf_rt_new(ecomadd); | |
5323 | ||
58d8948c SW |
5324 | /* Remove auto generated RT if not configured */ |
5325 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5326 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5327 | |
5328 | /* Add the new RT to the RT list */ | |
ca337b46 | 5329 | listnode_add_sort(bgp_vrf->vrf_export_rtl, newrt); |
58d8948c | 5330 | |
c581d8b0 MK |
5331 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
5332 | ||
ebdc9e64 AD |
5333 | if (is_l3vni_live(bgp_vrf)) |
5334 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5335 | } |
5336 | ||
58d8948c SW |
5337 | void bgp_evpn_configure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5338 | { | |
5339 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5340 | return; /* Already configured */ | |
5341 | ||
5342 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5343 | ||
5344 | if (!is_l3vni_live(bgp_vrf)) | |
5345 | return; /* Wait for VNI before adding rts */ | |
5346 | ||
5347 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5348 | ||
5349 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5350 | } | |
5351 | ||
c581d8b0 MK |
5352 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, |
5353 | struct ecommunity *ecomdel) | |
5354 | { | |
58d8948c SW |
5355 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5356 | return; /* Already un-configured */ | |
c581d8b0 | 5357 | |
ca337b46 SW |
5358 | /* Remove rt */ |
5359 | rt_list_remove_node(bgp_vrf->vrf_export_rtl, ecomdel, true); | |
c581d8b0 | 5360 | |
58d8948c | 5361 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_export_rtl)) |
c581d8b0 | 5362 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
c581d8b0 | 5363 | |
58d8948c SW |
5364 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); |
5365 | } | |
1525e99f | 5366 | |
58d8948c SW |
5367 | void bgp_evpn_unconfigure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5368 | { | |
5369 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5370 | return; /* Already un-configured */ | |
c581d8b0 | 5371 | |
58d8948c SW |
5372 | /* remove auto-generated RT */ |
5373 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
5374 | ||
5375 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5376 | ||
5377 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); | |
c581d8b0 MK |
5378 | } |
5379 | ||
2d48ee25 | 5380 | /* |
5381 | * Handle change to BGP router id. This is invoked twice by the change | |
5382 | * handler, first before the router id has been changed and then after | |
5383 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 5384 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 5385 | * will result in the routes being re-advertised. |
5386 | */ | |
d62a17ae | 5387 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 5388 | { |
5394a276 CS |
5389 | struct listnode *node; |
5390 | struct bgp *bgp_vrf; | |
5391 | ||
676f83b9 | 5392 | if (withdraw) { |
5393 | ||
5394 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 5395 | stored in the global table for this vrf |
5396 | */ | |
80b140af | 5397 | withdraw_router_id_vrf(bgp); |
676f83b9 | 5398 | |
5399 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 5400 | * L2-VNIs |
5401 | */ | |
d62a17ae | 5402 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5403 | (void (*)(struct hash_bucket *, |
d62a17ae | 5404 | void *))withdraw_router_id_vni, |
5405 | bgp); | |
5394a276 CS |
5406 | |
5407 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5408 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5409 | if (bgp_vrf->evpn_info->advertise_pip && | |
5410 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5411 | == INADDR_ANY)) | |
5412 | bgp_vrf->evpn_info->pip_ip.s_addr | |
5413 | = INADDR_ANY; | |
5414 | } | |
5415 | } | |
676f83b9 | 5416 | } else { |
5417 | ||
5394a276 CS |
5418 | /* Assign new default instance router-id */ |
5419 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5420 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5421 | if (bgp_vrf->evpn_info->advertise_pip && | |
5422 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5423 | == INADDR_ANY)) { | |
5424 | bgp_vrf->evpn_info->pip_ip = | |
5425 | bgp->router_id; | |
5426 | /* advertise type-5 routes with | |
5427 | * new nexthop | |
5428 | */ | |
5429 | update_advertise_vrf_routes(bgp_vrf); | |
5430 | } | |
5431 | } | |
5432 | } | |
5433 | ||
676f83b9 | 5434 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 5435 | * RD |
5436 | */ | |
80b140af | 5437 | update_router_id_vrf(bgp); |
676f83b9 | 5438 | |
5439 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 5440 | * new RD |
5441 | */ | |
d62a17ae | 5442 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5443 | (void (*)(struct hash_bucket *, |
d62a17ae | 5444 | void *))update_router_id_vni, |
5445 | bgp); | |
676f83b9 | 5446 | } |
2d48ee25 | 5447 | } |
5448 | ||
bf1061d8 VB |
5449 | /* |
5450 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
5451 | */ | |
5452 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
5453 | { | |
5454 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 5455 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
5456 | void*))update_autort_vni, |
5457 | bgp); | |
4204021e PG |
5458 | if (bgp->l3vni) |
5459 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
5460 | } |
5461 | ||
90e60aa7 | 5462 | /* |
5463 | * Handle change to export RT - update and advertise local routes. | |
5464 | */ | |
d62a17ae | 5465 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5466 | { |
d62a17ae | 5467 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 5468 | } |
5469 | ||
996c9314 | 5470 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 5471 | { |
5472 | if (withdraw) | |
5473 | delete_withdraw_vrf_routes(bgp_vrf); | |
5474 | else | |
5475 | update_advertise_vrf_routes(bgp_vrf); | |
5476 | } | |
5477 | ||
90e60aa7 | 5478 | /* |
5479 | * Handle change to RD. This is invoked twice by the change handler, | |
5480 | * first before the RD has been changed and then after the RD has | |
5481 | * been changed. The first invocation will result in local routes | |
5482 | * of this VNI being deleted and withdrawn and the next will result | |
5483 | * in the routes being re-advertised. | |
5484 | */ | |
d62a17ae | 5485 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
5486 | int withdraw) | |
90e60aa7 | 5487 | { |
d62a17ae | 5488 | if (withdraw) |
5489 | delete_withdraw_vni_routes(bgp, vpn); | |
5490 | else | |
5491 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 5492 | } |
5493 | ||
5494 | /* | |
5495 | * Install routes for this VNI. Invoked upon change to Import RT. | |
5496 | */ | |
d62a17ae | 5497 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5498 | { |
d62a17ae | 5499 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 5500 | } |
5501 | ||
5502 | /* | |
5503 | * Uninstall all routes installed for this VNI. Invoked upon change | |
5504 | * to Import RT. | |
5505 | */ | |
d62a17ae | 5506 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5507 | { |
d62a17ae | 5508 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 5509 | } |
5510 | ||
b16031a2 | 5511 | /* |
b57ba6d2 | 5512 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 5513 | */ |
d7c0a89a | 5514 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 5515 | int len) |
b16031a2 | 5516 | { |
b57ba6d2 | 5517 | vni_t vni1, vni2; |
b16031a2 | 5518 | |
b57ba6d2 MK |
5519 | vni1 = label2vni(label); |
5520 | if (num_labels == 2) { | |
996c9314 | 5521 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
5522 | snprintf(buf, len, "%u/%u", vni1, vni2); |
5523 | } else | |
5524 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 5525 | return buf; |
b16031a2 | 5526 | } |
5527 | ||
9c92b5f7 MK |
5528 | /* |
5529 | * Function to convert evpn route to json format. | |
5530 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
5531 | */ | |
bd494ec5 | 5532 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 5533 | { |
b682f6de | 5534 | char buf1[ETHER_ADDR_STRLEN]; |
5535 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
5536 | uint8_t family; |
5537 | uint8_t prefixlen; | |
9c92b5f7 | 5538 | |
b682f6de | 5539 | if (!json) |
5540 | return; | |
9c92b5f7 | 5541 | |
44c69747 LK |
5542 | json_object_int_add(json, "routeType", p->prefix.route_type); |
5543 | ||
5544 | switch (p->prefix.route_type) { | |
5545 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5546 | json_object_int_add(json, "ethTag", |
44c69747 LK |
5547 | p->prefix.macip_addr.eth_tag); |
5548 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
5549 | json_object_string_add(json, "mac", | |
5550 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
5551 | sizeof(buf1))); | |
5552 | ||
5553 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
5554 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
5555 | AF_INET6; | |
5556 | prefixlen = (family == AF_INET) ? | |
5557 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
5558 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
5559 | buf2, PREFIX2STR_BUFFER); | |
5560 | json_object_int_add(json, "ipLen", prefixlen); | |
5561 | json_object_string_add(json, "ip", buf2); | |
5562 | } | |
5563 | break; | |
dff8f48d | 5564 | |
44c69747 LK |
5565 | case BGP_EVPN_IMET_ROUTE: |
5566 | json_object_int_add(json, "ethTag", | |
5567 | p->prefix.imet_addr.eth_tag); | |
5568 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5569 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
5570 | IPV6_MAX_BITLEN; | |
5571 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
5572 | PREFIX2STR_BUFFER); | |
5573 | json_object_int_add(json, "ipLen", prefixlen); | |
5574 | json_object_string_add(json, "ip", buf2); | |
5575 | break; | |
dff8f48d | 5576 | |
44c69747 LK |
5577 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5578 | json_object_int_add(json, "ethTag", | |
5579 | p->prefix.prefix_addr.eth_tag); | |
5580 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5581 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
5582 | buf2, sizeof(buf2)); | |
5583 | json_object_int_add(json, "ipLen", | |
5584 | p->prefix.prefix_addr.ip_prefix_length); | |
5585 | json_object_string_add(json, "ip", buf2); | |
5586 | break; | |
5587 | ||
5588 | default: | |
5589 | break; | |
dff8f48d | 5590 | } |
9c92b5f7 MK |
5591 | } |
5592 | ||
128ea8ab | 5593 | /* |
5594 | * Encode EVPN prefix in Update (MP_REACH) | |
5595 | */ | |
5f040085 DS |
5596 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5597 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 5598 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 5599 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 5600 | { |
5601 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5602 | int len, ipa_len = 0; |
d62a17ae | 5603 | |
be92fc9f | 5604 | if (addpath_capable) |
d62a17ae | 5605 | stream_putl(s, addpath_tx_id); |
5606 | ||
5607 | /* Route type */ | |
5608 | stream_putc(s, evp->prefix.route_type); | |
5609 | ||
5610 | switch (evp->prefix.route_type) { | |
5611 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5612 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5613 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5614 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5615 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5616 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5617 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5618 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5619 | len += 3; | |
5620 | stream_putc(s, len); | |
996c9314 | 5621 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 5622 | if (attr) |
c44ab6f1 | 5623 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
5624 | else |
5625 | stream_put(s, 0, 10); | |
3714a385 | 5626 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5627 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5628 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5629 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5630 | if (ipa_len) /* IP */ | |
5631 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5632 | ipa_len); | |
b57ba6d2 MK |
5633 | /* 1st label is the L2 VNI */ |
5634 | stream_put(s, label, BGP_LABEL_BYTES); | |
5635 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5636 | if (ipa_len && num_labels > 1) | |
996c9314 | 5637 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5638 | break; |
5639 | ||
5640 | case BGP_EVPN_IMET_ROUTE: | |
5641 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5642 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5643 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5644 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5645 | /* Originating Router's IP Addr */ | |
3714a385 | 5646 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5647 | break; |
5648 | ||
50f74cf1 | 5649 | case BGP_EVPN_ES_ROUTE: |
5650 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5651 | stream_put(s, prd->val, 8); /* RD */ | |
5652 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5653 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5654 | /* VTEP IP */ |
5655 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5656 | break; |
5657 | ||
c44ab6f1 AK |
5658 | case BGP_EVPN_AD_ROUTE: |
5659 | /* RD, ESI, EthTag, 1 VNI */ | |
5660 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
5661 | stream_putc(s, len); | |
5662 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
5663 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
5664 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
5665 | stream_put(s, label, BGP_LABEL_BYTES); | |
5666 | break; | |
5667 | ||
d62a17ae | 5668 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5669 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5670 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5671 | break; |
5672 | ||
5673 | default: | |
5674 | break; | |
5675 | } | |
5676 | } | |
5677 | ||
5678 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5679 | struct bgp_nlri *packet, int withdraw) | |
5680 | { | |
d7c0a89a QY |
5681 | uint8_t *pnt; |
5682 | uint8_t *lim; | |
d62a17ae | 5683 | afi_t afi; |
5684 | safi_t safi; | |
d7c0a89a | 5685 | uint32_t addpath_id; |
be92fc9f | 5686 | bool addpath_capable; |
d62a17ae | 5687 | int psize = 0; |
d7c0a89a | 5688 | uint8_t rtype; |
d62a17ae | 5689 | struct prefix p; |
5690 | ||
d62a17ae | 5691 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5692 | pnt = packet->nlri; | |
5693 | lim = pnt + packet->length; | |
5694 | afi = packet->afi; | |
5695 | safi = packet->safi; | |
5696 | addpath_id = 0; | |
5697 | ||
be92fc9f | 5698 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 5699 | |
5700 | for (; pnt < lim; pnt += psize) { | |
5701 | /* Clear prefix structure. */ | |
6006b807 | 5702 | memset(&p, 0, sizeof(p)); |
d62a17ae | 5703 | |
5704 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 5705 | if (addpath_capable) { |
d62a17ae | 5706 | /* When packet overflow occurs return immediately. */ |
5707 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5708 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5709 | |
a3a850a1 S |
5710 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5711 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5712 | pnt += BGP_ADDPATH_ID_LEN; |
5713 | } | |
5714 | ||
5715 | /* All EVPN NLRI types start with type and length. */ | |
5716 | if (pnt + 2 > lim) | |
513386b5 | 5717 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5718 | |
5719 | rtype = *pnt++; | |
3f54c705 | 5720 | psize = *pnt++; |
d62a17ae | 5721 | |
5722 | /* When packet overflow occur return immediately. */ | |
5723 | if (pnt + psize > lim) | |
513386b5 | 5724 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5725 | |
5726 | switch (rtype) { | |
5727 | case BGP_EVPN_MAC_IP_ROUTE: | |
5728 | if (process_type2_route(peer, afi, safi, | |
5729 | withdraw ? NULL : attr, pnt, | |
5730 | psize, addpath_id)) { | |
af4c2728 | 5731 | flog_err( |
e50f7cfd | 5732 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5733 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5734 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5735 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5736 | } |
5737 | break; | |
5738 | ||
5739 | case BGP_EVPN_IMET_ROUTE: | |
5740 | if (process_type3_route(peer, afi, safi, | |
5741 | withdraw ? NULL : attr, pnt, | |
5742 | psize, addpath_id)) { | |
af4c2728 | 5743 | flog_err( |
e50f7cfd | 5744 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5745 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5746 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5747 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5748 | } |
5749 | break; | |
5750 | ||
50f74cf1 | 5751 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5752 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5753 | withdraw ? NULL : attr, pnt, |
5754 | psize, addpath_id)) { | |
af4c2728 | 5755 | flog_err( |
e50f7cfd | 5756 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5757 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5758 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5759 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5760 | } |
5761 | break; | |
5762 | ||
c44ab6f1 AK |
5763 | case BGP_EVPN_AD_ROUTE: |
5764 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5765 | withdraw ? NULL : attr, pnt, | |
5766 | psize, addpath_id)) { | |
5767 | flog_err( | |
5768 | EC_BGP_PKT_PROCESS, | |
5769 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5770 | peer->bgp->vrf_id, peer->host, psize); | |
5771 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5772 | } | |
5773 | break; | |
5774 | ||
d62a17ae | 5775 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5776 | if (process_type5_route(peer, afi, safi, |
5777 | withdraw ? NULL : attr, pnt, | |
5778 | psize, addpath_id)) { | |
af4c2728 | 5779 | flog_err( |
e50f7cfd | 5780 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5781 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5782 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5783 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5784 | } |
5785 | break; | |
5786 | ||
5787 | default: | |
5788 | break; | |
5789 | } | |
5790 | } | |
5791 | ||
5792 | /* Packet length consistency check. */ | |
5793 | if (pnt != lim) | |
513386b5 | 5794 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5795 | |
513386b5 | 5796 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5797 | } |
5798 | ||
10ebe1ab MK |
5799 | /* |
5800 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5801 | * The mapping will be used during route processing. | |
10ebe1ab MK |
5802 | * bgp_vrf: specific bgp vrf instance on which RT is configured |
5803 | */ | |
5804 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5805 | { | |
58d8948c | 5806 | struct listnode *node, *nnode; |
ca337b46 | 5807 | struct vrf_route_target *l3rt; |
10ebe1ab | 5808 | |
58d8948c SW |
5809 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5810 | map_vrf_to_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5811 | } |
5812 | ||
5813 | /* | |
5814 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5815 | */ | |
5816 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5817 | { | |
10ebe1ab | 5818 | struct listnode *node, *nnode; |
ca337b46 | 5819 | struct vrf_route_target *l3rt; |
10ebe1ab | 5820 | |
58d8948c SW |
5821 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5822 | unmap_vrf_from_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5823 | } |
5824 | ||
128ea8ab | 5825 | /* |
5826 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5827 | * The mapping will be used during route processing. | |
5828 | */ | |
d62a17ae | 5829 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5830 | { |
f6e07e1b | 5831 | uint32_t i; |
d62a17ae | 5832 | struct ecommunity_val *eval; |
5833 | struct listnode *node, *nnode; | |
5834 | struct ecommunity *ecom; | |
128ea8ab | 5835 | |
d62a17ae | 5836 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5837 | for (i = 0; i < ecom->size; i++) { | |
5838 | eval = (struct ecommunity_val *)(ecom->val | |
5839 | + (i | |
5840 | * ECOMMUNITY_SIZE)); | |
5841 | map_vni_to_rt(bgp, vpn, eval); | |
5842 | } | |
5843 | } | |
128ea8ab | 5844 | } |
5845 | ||
5846 | /* | |
5847 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5848 | */ | |
d62a17ae | 5849 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5850 | { |
f6e07e1b | 5851 | uint32_t i; |
d62a17ae | 5852 | struct ecommunity_val *eval; |
5853 | struct listnode *node, *nnode; | |
5854 | struct ecommunity *ecom; | |
128ea8ab | 5855 | |
d62a17ae | 5856 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5857 | for (i = 0; i < ecom->size; i++) { | |
5858 | struct irt_node *irt; | |
5859 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5860 | |
d62a17ae | 5861 | eval = (struct ecommunity_val *)(ecom->val |
5862 | + (i | |
5863 | * ECOMMUNITY_SIZE)); | |
5864 | /* If using "automatic" RT, we only care about the | |
5865 | * local-admin sub-field. | |
5866 | * This is to facilitate using VNI as the RT for EBGP | |
5867 | * peering too. | |
5868 | */ | |
5869 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5870 | if (!is_import_rt_configured(vpn)) | |
5871 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5872 | |
d62a17ae | 5873 | irt = lookup_import_rt(bgp, &eval_tmp); |
5874 | if (irt) | |
5875 | unmap_vni_from_rt(bgp, vpn, irt); | |
5876 | } | |
5877 | } | |
128ea8ab | 5878 | } |
5879 | ||
5880 | /* | |
5881 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5882 | * The mapping will be used during route processing. | |
5883 | */ | |
d62a17ae | 5884 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5885 | { |
58d8948c | 5886 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl, false); |
d62a17ae | 5887 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5888 | |
d62a17ae | 5889 | /* Map RT to VNI */ |
5890 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5891 | } |
5892 | ||
5893 | /* | |
5894 | * Derive Export RT automatically for VNI. | |
5895 | */ | |
d62a17ae | 5896 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5897 | { |
58d8948c | 5898 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl, false); |
d62a17ae | 5899 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5900 | } |
5901 | ||
676f83b9 | 5902 | /* |
5903 | * Derive RD automatically for VNI using passed information - it | |
5904 | * is of the form RouterId:unique-id-for-vni. | |
5905 | */ | |
5906 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5907 | { | |
9e97ff03 CS |
5908 | if (is_vrf_rd_configured(bgp)) |
5909 | return; | |
5910 | ||
92708db6 | 5911 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5912 | } |
5913 | ||
128ea8ab | 5914 | /* |
5915 | * Derive RD automatically for VNI using passed information - it | |
5916 | * is of the form RouterId:unique-id-for-vni. | |
5917 | */ | |
d62a17ae | 5918 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5919 | { |
c44ab6f1 | 5920 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5921 | |
d62a17ae | 5922 | vpn->prd.family = AF_UNSPEC; |
5923 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5924 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5925 | (void)str2prefix_rd(buf, &vpn->prd); |
fa566a94 PG |
5926 | if (vpn->prd_pretty) |
5927 | XFREE(MTYPE_BGP, vpn->prd_pretty); | |
d62a17ae | 5928 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5929 | } |
5930 | ||
7df407ed CS |
5931 | /* |
5932 | * Lookup L3-VNI | |
5933 | */ | |
5934 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5935 | { | |
5936 | struct list *inst = bm->bgp; | |
5937 | struct listnode *node; | |
5938 | struct bgp *bgp_vrf; | |
5939 | ||
5940 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5941 | if (bgp_vrf->l3vni == vni) | |
5942 | return true; | |
5943 | } | |
5944 | ||
5945 | return false; | |
5946 | } | |
5947 | ||
128ea8ab | 5948 | /* |
5949 | * Lookup VNI. | |
5950 | */ | |
d62a17ae | 5951 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5952 | { |
d62a17ae | 5953 | struct bgpevpn *vpn; |
5954 | struct bgpevpn tmp; | |
128ea8ab | 5955 | |
6006b807 | 5956 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 5957 | tmp.vni = vni; |
5958 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5959 | return vpn; | |
128ea8ab | 5960 | } |
5961 | ||
5962 | /* | |
5963 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5964 | */ | |
d62a17ae | 5965 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5966 | struct in_addr originator_ip, |
5967 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5968 | struct in_addr mcast_grp, |
5969 | ifindex_t svi_ifindex) | |
128ea8ab | 5970 | { |
d62a17ae | 5971 | struct bgpevpn *vpn; |
128ea8ab | 5972 | |
d62a17ae | 5973 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5974 | |
d62a17ae | 5975 | /* Set values - RD and RT set to defaults. */ |
5976 | vpn->vni = vni; | |
5977 | vpn->originator_ip = originator_ip; | |
29c53922 | 5978 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5979 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5980 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5981 | |
d62a17ae | 5982 | /* Initialize route-target import and export lists */ |
5983 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5984 | vpn->import_rtl->cmp = |
5985 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5986 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5987 | vpn->export_rtl = list_new(); |
f4a5218d AK |
5988 | vpn->export_rtl->cmp = |
5989 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5990 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 5991 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5992 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5993 | |
852d9f97 SW |
5994 | /* Initialize EVPN route tables. */ |
5995 | vpn->ip_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5996 | vpn->mac_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
128ea8ab | 5997 | |
d62a17ae | 5998 | /* Add to hash */ |
ac390ef8 | 5999 | (void)hash_get(bgp->vnihash, vpn, hash_alloc_intern); |
6a8657d0 | 6000 | |
021b6596 AD |
6001 | bgp_evpn_remote_ip_hash_init(vpn); |
6002 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6003 | ||
6a8657d0 MK |
6004 | /* add to l2vni list on corresponding vrf */ |
6005 | bgpevpn_link_to_l3vni(vpn); | |
6006 | ||
c44ab6f1 AK |
6007 | bgp_evpn_vni_es_init(vpn); |
6008 | ||
d62a17ae | 6009 | QOBJ_REG(vpn, bgpevpn); |
6010 | return vpn; | |
128ea8ab | 6011 | } |
6012 | ||
6013 | /* | |
6014 | * Free a given VPN - called in multiple scenarios such as zebra | |
6015 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
6016 | * This just frees appropriate memory, caller should have taken other | |
6017 | * needed actions. | |
6018 | */ | |
d62a17ae | 6019 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 6020 | { |
021b6596 | 6021 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 6022 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 6023 | bgpevpn_unlink_from_l3vni(vpn); |
852d9f97 SW |
6024 | bgp_table_unlock(vpn->ip_table); |
6025 | bgp_table_unlock(vpn->mac_table); | |
d62a17ae | 6026 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); |
6a154c88 DL |
6027 | list_delete(&vpn->import_rtl); |
6028 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 6029 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 6030 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 6031 | hash_release(bgp->vnihash, vpn); |
fa566a94 PG |
6032 | if (vpn->prd_pretty) |
6033 | XFREE(MTYPE_BGP, vpn->prd_pretty); | |
d62a17ae | 6034 | QOBJ_UNREG(vpn); |
6035 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 6036 | } |
6037 | ||
3727e359 DA |
6038 | static void hash_evpn_free(struct bgpevpn *vpn) |
6039 | { | |
6040 | XFREE(MTYPE_BGP_EVPN, vpn); | |
6041 | } | |
6042 | ||
50f74cf1 | 6043 | /* |
6044 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 6045 | */ |
d62a17ae | 6046 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6047 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6048 | { |
40381db7 | 6049 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 6050 | } |
6051 | ||
6052 | /* | |
50f74cf1 | 6053 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 6054 | */ |
d62a17ae | 6055 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6056 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6057 | { |
40381db7 | 6058 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 6059 | } |
6060 | ||
db0e1937 MK |
6061 | /* filter routes which have martian next hops */ |
6062 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
6063 | { | |
0291c246 MK |
6064 | afi_t afi; |
6065 | safi_t safi; | |
9bcb3eef | 6066 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 6067 | struct bgp_table *table; |
40381db7 | 6068 | struct bgp_path_info *pi; |
db0e1937 MK |
6069 | |
6070 | afi = AFI_L2VPN; | |
6071 | safi = SAFI_EVPN; | |
6072 | ||
6073 | /* Walk entire global routing table and evaluate routes which could be | |
6074 | * imported into this VPN. Note that we cannot just look at the routes | |
6075 | * for the VNI's RD - | |
6076 | * remote routes applicable for this VNI could have any RD. | |
6077 | */ | |
6078 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
6079 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
6080 | rd_dest = bgp_route_next(rd_dest)) { | |
6081 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
6082 | if (!table) |
6083 | continue; | |
6084 | ||
9bcb3eef DS |
6085 | for (dest = bgp_table_top(table); dest; |
6086 | dest = bgp_route_next(dest)) { | |
db0e1937 | 6087 | |
9bcb3eef | 6088 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 6089 | pi = pi->next) { |
db0e1937 MK |
6090 | |
6091 | /* Consider "valid" remote routes applicable for | |
6092 | * this VNI. */ | |
40381db7 DS |
6093 | if (!(pi->type == ZEBRA_ROUTE_BGP |
6094 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 6095 | continue; |
9bcb3eef DS |
6096 | if (bgp_nexthop_self(bgp, afi, pi->type, |
6097 | pi->sub_type, pi->attr, | |
6098 | dest)) { | |
b54892e0 | 6099 | const struct prefix *p = |
9bcb3eef | 6100 | bgp_dest_get_prefix(dest); |
db0e1937 | 6101 | |
b54892e0 DS |
6102 | if (bgp_debug_update(pi->peer, p, NULL, |
6103 | 1)) { | |
6104 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 6105 | |
b54892e0 | 6106 | bgp_dump_attr(pi->attr, |
5022c833 DA |
6107 | attr_str, |
6108 | sizeof(attr_str)); | |
db0e1937 | 6109 | |
db0e1937 | 6110 | zlog_debug( |
56ca3b5b | 6111 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 6112 | bgp->vrf_id, dest, |
db0e1937 | 6113 | attr_str); |
b54892e0 | 6114 | } |
db0e1937 | 6115 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 6116 | p, pi); |
db0e1937 | 6117 | |
9bcb3eef | 6118 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 6119 | safi); |
db0e1937 | 6120 | } |
db0e1937 MK |
6121 | } |
6122 | } | |
6123 | } | |
6124 | ||
6125 | return 0; | |
6126 | } | |
6127 | ||
128ea8ab | 6128 | /* |
6129 | * Handle del of a local MACIP. | |
6130 | */ | |
d62a17ae | 6131 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 6132 | struct ipaddr *ip, int state) |
128ea8ab | 6133 | { |
d62a17ae | 6134 | struct bgpevpn *vpn; |
6135 | struct prefix_evpn p; | |
9bcb3eef | 6136 | struct bgp_dest *dest; |
128ea8ab | 6137 | |
d62a17ae | 6138 | /* Lookup VNI hash - should exist. */ |
6139 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6140 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6141 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6142 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 6143 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6144 | return -1; | |
6145 | } | |
128ea8ab | 6146 | |
d62a17ae | 6147 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
6148 | if (state == ZEBRA_NEIGH_ACTIVE) { |
6149 | /* Remove EVPN type-2 route and schedule for processing. */ | |
6150 | delete_evpn_route(bgp, vpn, &p); | |
6151 | } else { | |
6152 | /* Re-instate the current remote best path if any */ | |
852d9f97 | 6153 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
e71ad4b6 | 6154 | if (dest) { |
9bcb3eef | 6155 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
6156 | bgp_dest_unlock_node(dest); |
6157 | } | |
ec0ab544 | 6158 | } |
128ea8ab | 6159 | |
d62a17ae | 6160 | return 0; |
128ea8ab | 6161 | } |
6162 | ||
6163 | /* | |
6164 | * Handle add of a local MACIP. | |
6165 | */ | |
d62a17ae | 6166 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 6167 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 6168 | { |
d62a17ae | 6169 | struct bgpevpn *vpn; |
6170 | struct prefix_evpn p; | |
128ea8ab | 6171 | |
d62a17ae | 6172 | /* Lookup VNI hash - should exist. */ |
6173 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6174 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6175 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6176 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 6177 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6178 | return -1; | |
6179 | } | |
128ea8ab | 6180 | |
d62a17ae | 6181 | /* Create EVPN type-2 route and schedule for processing. */ |
6182 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 6183 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 6184 | flog_err( |
e50f7cfd | 6185 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 6186 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 6187 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
6188 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
6189 | ? "sticky gateway" | |
6190 | : "", | |
c0d72166 | 6191 | mac, ip, flags); |
d62a17ae | 6192 | return -1; |
6193 | } | |
128ea8ab | 6194 | |
d62a17ae | 6195 | return 0; |
128ea8ab | 6196 | } |
6197 | ||
e3b78da8 | 6198 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
6199 | struct bgp *bgp_vrf) |
6200 | { | |
e3b78da8 | 6201 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 6202 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 6203 | |
5e53dce3 T |
6204 | bgp_evpn = bgp_get_evpn(); |
6205 | assert(bgp_evpn); | |
6a8657d0 | 6206 | |
6a8657d0 MK |
6207 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
6208 | bgpevpn_link_to_l3vni(vpn); | |
6209 | } | |
6210 | ||
14e814ea CS |
6211 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
6212 | struct ethaddr *svi_rmac, | |
6213 | struct ethaddr *vrr_rmac, | |
0483af6e | 6214 | struct in_addr originator_ip, int filter, |
14e814ea CS |
6215 | ifindex_t svi_ifindex, |
6216 | bool is_anycast_mac) | |
fe1dc5a3 MK |
6217 | { |
6218 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 6219 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
6220 | struct listnode *node = NULL; |
6221 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
6222 | as_t as = 0; |
6223 | ||
3621ebc5 | 6224 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 6225 | * auto-creatio |
6226 | */ | |
5e53dce3 T |
6227 | bgp_evpn = bgp_get_evpn(); |
6228 | if (!bgp_evpn) { | |
af4c2728 | 6229 | flog_err( |
e50f7cfd | 6230 | EC_BGP_NO_DFLT, |
3621ebc5 | 6231 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 6232 | l3vni); |
fe1dc5a3 MK |
6233 | return -1; |
6234 | } | |
5e53dce3 | 6235 | as = bgp_evpn->as; |
fe1dc5a3 | 6236 | |
0437e105 | 6237 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 6238 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
6239 | if (!bgp_vrf) { |
6240 | ||
6241 | int ret = 0; | |
6242 | ||
5d5393b9 DL |
6243 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
6244 | vrf_id == VRF_DEFAULT | |
9eb11997 PG |
6245 | ? BGP_INSTANCE_TYPE_DEFAULT |
6246 | : BGP_INSTANCE_TYPE_VRF, | |
e55b0883 | 6247 | NULL, ASNOTATION_UNDEFINED); |
fe1dc5a3 | 6248 | switch (ret) { |
fe1dc5a3 | 6249 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 6250 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
9eb11997 PG |
6251 | "BGP instance is already running; AS is %s", |
6252 | bgp_vrf->as_pretty); | |
fe1dc5a3 MK |
6253 | return -1; |
6254 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 6255 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 6256 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
6257 | return -1; |
6258 | } | |
6259 | ||
6260 | /* mark as auto created */ | |
6261 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
6262 | } | |
6263 | ||
0483af6e | 6264 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 6265 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 6266 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 6267 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 6268 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 6269 | |
14e814ea CS |
6270 | /* copy anycast MAC from VRR MAC */ |
6271 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
6272 | /* copy sys RMAC from SVI MAC */ | |
6273 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
6274 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
6275 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
6276 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
6277 | ||
c0d72166 DS |
6278 | if (bgp_debug_zebra(NULL)) |
6279 | zlog_debug( | |
6280 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
6281 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
6282 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
6283 | : "disable", | |
6284 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
6285 | &bgp_vrf->evpn_info->pip_rmac_static, | |
6286 | is_anycast_mac ? "Enable" : "Disable"); | |
6287 | ||
c48d9f5f | 6288 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 6289 | if (filter) { |
c48d9f5f MK |
6290 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6291 | ||
10f70510 AD |
6292 | /* |
6293 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
6294 | * set before linking vrf to L3VNI. Thus, no need to clear | |
6295 | * that explicitly. | |
6296 | */ | |
6297 | } else { | |
6298 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
6299 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
6300 | ||
6301 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6302 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
6303 | ||
6304 | /* | |
6305 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
6306 | * flag, update all MACIP routes in this VNI | |
6307 | */ | |
6308 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
6309 | update_all_type2_routes(bgp_evpn, vpn); | |
6310 | } | |
6311 | } | |
6312 | } | |
6313 | ||
530e8a6e | 6314 | /* Map auto derive or configured RTs */ |
58d8948c SW |
6315 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD) || |
6316 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6317 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6318 | else |
6319 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
6320 | ||
58d8948c SW |
6321 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD) || |
6322 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6323 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6324 | |
6325 | /* auto derive RD */ | |
676f83b9 | 6326 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 6327 | |
6a8657d0 | 6328 | /* link all corresponding l2vnis */ |
5e53dce3 | 6329 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 6330 | (void (*)(struct hash_bucket *, |
996c9314 | 6331 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
6332 | bgp_vrf); |
6333 | ||
c48d9f5f MK |
6334 | /* Only update all corresponding type-2 routes if we are advertising two |
6335 | * labels along with type-2 routes | |
6336 | */ | |
6337 | if (!filter) | |
6338 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 6339 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 6340 | |
06d2e8f3 MK |
6341 | /* advertise type-5 routes if needed */ |
6342 | update_advertise_vrf_routes(bgp_vrf); | |
6343 | ||
5ba238b7 MK |
6344 | /* install all remote routes belonging to this l3vni into correspondng |
6345 | * vrf */ | |
6346 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
6347 | |
6348 | return 0; | |
6349 | } | |
6350 | ||
996c9314 | 6351 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
6352 | { |
6353 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 6354 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 6355 | struct listnode *node = NULL; |
18abc1eb | 6356 | struct listnode *next = NULL; |
f1f8b53c | 6357 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
6358 | |
6359 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
6360 | if (!bgp_vrf) { | |
af4c2728 | 6361 | flog_err( |
e50f7cfd | 6362 | EC_BGP_NO_DFLT, |
996c9314 LB |
6363 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
6364 | l3vni); | |
fe1dc5a3 MK |
6365 | return -1; |
6366 | } | |
6367 | ||
5e53dce3 T |
6368 | bgp_evpn = bgp_get_evpn(); |
6369 | if (!bgp_evpn) { | |
af4c2728 | 6370 | flog_err( |
e50f7cfd | 6371 | EC_BGP_NO_DFLT, |
3621ebc5 | 6372 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 6373 | l3vni); |
f1f8b53c MK |
6374 | return -1; |
6375 | } | |
6376 | ||
d846168d | 6377 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 6378 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
6379 | * routes. This will uninstalling the routes from zebra and decremnt the |
6380 | * bgp info count. | |
523cafc4 | 6381 | */ |
d846168d | 6382 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 6383 | |
06d2e8f3 MK |
6384 | /* delete/withdraw all type-5 routes */ |
6385 | delete_withdraw_vrf_routes(bgp_vrf); | |
6386 | ||
fe1dc5a3 MK |
6387 | /* remove the l3vni from vrf instance */ |
6388 | bgp_vrf->l3vni = 0; | |
6389 | ||
6390 | /* remove the Rmac from the BGP vrf */ | |
6391 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
6392 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
6393 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
6394 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
6395 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 6396 | |
530e8a6e | 6397 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 6398 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 6399 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
6400 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
6401 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 6402 | } |
530e8a6e CS |
6403 | |
6404 | /* remove default export RT */ | |
6405 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
6406 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 6407 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 6408 | } |
fe1dc5a3 | 6409 | |
f1f8b53c | 6410 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
6411 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
6412 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6413 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 6414 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
6415 | } |
6416 | } | |
fe1dc5a3 | 6417 | |
18abc1eb | 6418 | /* If any L2VNIs point to this instance, unlink them. */ |
6419 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
6420 | bgpevpn_unlink_from_l3vni(vpn); | |
6421 | ||
ff9d54fb CS |
6422 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6423 | ||
fe1dc5a3 MK |
6424 | /* Delete the instance if it was autocreated */ |
6425 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
6426 | bgp_delete(bgp_vrf); | |
6427 | ||
6428 | return 0; | |
6429 | } | |
6430 | ||
128ea8ab | 6431 | /* |
6432 | * Handle del of a local VNI. | |
6433 | */ | |
d62a17ae | 6434 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 6435 | { |
d62a17ae | 6436 | struct bgpevpn *vpn; |
128ea8ab | 6437 | |
d62a17ae | 6438 | /* Locate VNI hash */ |
6439 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
07b9f44d | 6440 | if (!vpn) |
d62a17ae | 6441 | return 0; |
128ea8ab | 6442 | |
d62a17ae | 6443 | /* Remove all local EVPN routes and schedule for processing (to |
6444 | * withdraw from peers). | |
6445 | */ | |
6446 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 6447 | |
021b6596 AD |
6448 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
6449 | ||
9daa5d47 | 6450 | vpn->svi_ifindex = 0; |
db0e1937 MK |
6451 | /* |
6452 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
6453 | */ | |
6454 | bgp_tip_del(bgp, &vpn->originator_ip); | |
6455 | ||
d62a17ae | 6456 | /* Clear "live" flag and see if hash needs to be freed. */ |
6457 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6458 | if (!is_vni_configured(vpn)) | |
6459 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 6460 | |
d62a17ae | 6461 | return 0; |
128ea8ab | 6462 | } |
6463 | ||
6464 | /* | |
d1911c26 | 6465 | * Handle add (or update) of a local VNI. The VNI changes we care |
6466 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 6467 | */ |
d62a17ae | 6468 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
6469 | struct in_addr originator_ip, |
6470 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
6471 | struct in_addr mcast_grp, |
6472 | ifindex_t svi_ifindex) | |
d62a17ae | 6473 | { |
6474 | struct bgpevpn *vpn; | |
6475 | struct prefix_evpn p; | |
6476 | ||
d62a17ae | 6477 | /* Lookup VNI. If present and no change, exit. */ |
6478 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 6479 | if (vpn) { |
29c53922 | 6480 | |
d1911c26 | 6481 | if (is_vni_live(vpn) |
6482 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 6483 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
6484 | && vpn->tenant_vrf_id == tenant_vrf_id |
6485 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 6486 | /* Probably some other param has changed that we don't |
6487 | * care about. */ | |
6488 | return 0; | |
6489 | ||
76d07c7a AK |
6490 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
6491 | ||
021b6596 AD |
6492 | if (vpn->svi_ifindex != svi_ifindex) { |
6493 | ||
6494 | /* | |
6495 | * Unresolve all the gateway IP nexthops for this VNI | |
6496 | * for old SVI | |
6497 | */ | |
dc6cef73 AD |
6498 | bgp_evpn_remote_ip_hash_iterate( |
6499 | vpn, | |
6500 | (void (*)(struct hash_bucket *, void *)) | |
6501 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
6502 | vpn); |
6503 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
6504 | vpn->svi_ifindex = svi_ifindex; | |
6505 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6506 | ||
6507 | /* | |
6508 | * Resolve all the gateway IP nexthops for this VNI | |
6509 | * for new SVI | |
6510 | */ | |
dc6cef73 AD |
6511 | bgp_evpn_remote_ip_hash_iterate( |
6512 | vpn, | |
6513 | (void (*)(struct hash_bucket *, void *)) | |
6514 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
6515 | vpn); |
6516 | } | |
9daa5d47 | 6517 | |
d1911c26 | 6518 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 6519 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
6520 | |
6521 | /* | |
6522 | * Unresolve all the gateway IP nexthops for this VNI | |
6523 | * in old tenant vrf | |
6524 | */ | |
dc6cef73 AD |
6525 | bgp_evpn_remote_ip_hash_iterate( |
6526 | vpn, | |
6527 | (void (*)(struct hash_bucket *, void *)) | |
6528 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 6529 | vpn); |
6a8657d0 | 6530 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 6531 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 6532 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
6533 | |
6534 | /* | |
6535 | * Resolve all the gateway IP nexthops for this VNI | |
6536 | * in new tenant vrf | |
6537 | */ | |
dc6cef73 AD |
6538 | bgp_evpn_remote_ip_hash_iterate( |
6539 | vpn, | |
6540 | (void (*)(struct hash_bucket *, void *)) | |
6541 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 6542 | vpn); |
6a8657d0 | 6543 | } |
29c53922 | 6544 | |
d1911c26 | 6545 | /* If tunnel endpoint IP has changed, update (and delete prior |
6546 | * type-3 route, if needed.) | |
6547 | */ | |
4dabdde3 | 6548 | handle_tunnel_ip_change(bgp, vpn, originator_ip); |
d62a17ae | 6549 | |
d1911c26 | 6550 | /* Update all routes with new endpoint IP and/or export RT |
6551 | * for VRFs | |
6552 | */ | |
6553 | if (is_vni_live(vpn)) | |
6554 | update_routes_for_vni(bgp, vpn); | |
879e43a5 | 6555 | } else { |
6556 | /* Create or update as appropriate. */ | |
76d07c7a | 6557 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
879e43a5 | 6558 | mcast_grp, svi_ifindex); |
d62a17ae | 6559 | } |
6560 | ||
db0e1937 | 6561 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6562 | if (is_vni_live(vpn)) |
6563 | return 0; | |
6564 | ||
d62a17ae | 6565 | /* Mark as "live" */ |
6566 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6567 | ||
db0e1937 | 6568 | /* tunnel is now active, add tunnel-ip to db */ |
826c3f6d TA |
6569 | if (bgp_tip_add(bgp, &originator_ip)) |
6570 | /* The originator_ip was not already present in the | |
6571 | * bgp martian next-hop table as a tunnel-ip, so we | |
6572 | * need to go back and filter routes matching the new | |
6573 | * martian next-hop. | |
6574 | */ | |
6575 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
db0e1937 | 6576 | |
fd069644 DS |
6577 | /* |
6578 | * Create EVPN type-3 route and schedule for processing. | |
6579 | * | |
6580 | * RT-3 only if doing head-end replication | |
6581 | */ | |
833b8a50 AK |
6582 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6583 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 6584 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 6585 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
6586 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
6587 | "%u: Type3 route creation failure for VNI %u", | |
6588 | bgp->vrf_id, vni); | |
6589 | return -1; | |
6590 | } | |
d62a17ae | 6591 | } |
6592 | ||
6593 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6594 | * VNI, | |
6595 | * install them. | |
6596 | */ | |
6597 | install_routes_for_vni(bgp, vpn); | |
6598 | ||
d7d97010 MK |
6599 | /* If we are advertising gateway mac-ip |
6600 | It needs to be conveyed again to zebra */ | |
6601 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6602 | ||
df070e6f CS |
6603 | /* advertise svi mac-ip knob to zebra */ |
6604 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6605 | ||
d62a17ae | 6606 | return 0; |
b18825eb | 6607 | } |
14c1a7bf | 6608 | |
fd069644 DS |
6609 | /* |
6610 | * Handle change in setting for BUM handling. The supported values | |
6611 | * are head-end replication and dropping all BUM packets. Any change | |
6612 | * should be registered with zebra. Also, if doing head-end replication, | |
6613 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6614 | * to be dropped, the RT-3s must be withdrawn. | |
6615 | */ | |
6616 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6617 | { | |
6618 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6619 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6620 | "Flooding" : "Flooding Disabled"); | |
6621 | ||
6622 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6623 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6624 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6625 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6626 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6627 | } | |
6628 | ||
7724c0a1 | 6629 | /* |
6630 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6631 | * EVPN routes from peers. | |
6632 | */ | |
d62a17ae | 6633 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6634 | { |
e3b78da8 | 6635 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6636 | void *))cleanup_vni_on_disable, |
6637 | bgp); | |
7724c0a1 | 6638 | } |
6639 | ||
14c1a7bf | 6640 | /* |
6641 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6642 | * BGP instance (default) is being freed. | |
6643 | */ | |
d62a17ae | 6644 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6645 | { |
1525e99f | 6646 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6647 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6648 | bgp); |
6649 | ||
3727e359 | 6650 | hash_clean(bgp->import_rt_hash, (void (*)(void *))hash_import_rt_free); |
1525e99f | 6651 | hash_free(bgp->import_rt_hash); |
d62a17ae | 6652 | bgp->import_rt_hash = NULL; |
1525e99f | 6653 | |
3727e359 DA |
6654 | hash_clean(bgp->vrf_import_rt_hash, |
6655 | (void (*)(void *))hash_vrf_import_rt_free); | |
1525e99f | 6656 | hash_free(bgp->vrf_import_rt_hash); |
10ebe1ab | 6657 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 6658 | |
3727e359 | 6659 | hash_clean(bgp->vni_svi_hash, (void (*)(void *))hash_evpn_free); |
021b6596 AD |
6660 | hash_free(bgp->vni_svi_hash); |
6661 | bgp->vni_svi_hash = NULL; | |
1525e99f | 6662 | hash_free(bgp->vnihash); |
d62a17ae | 6663 | bgp->vnihash = NULL; |
1525e99f | 6664 | |
6a154c88 DL |
6665 | list_delete(&bgp->vrf_import_rtl); |
6666 | list_delete(&bgp->vrf_export_rtl); | |
6667 | list_delete(&bgp->l2vnis); | |
fa566a94 PG |
6668 | |
6669 | if (bgp->vrf_prd_pretty) | |
6670 | XFREE(MTYPE_BGP, bgp->vrf_prd_pretty); | |
14c1a7bf | 6671 | } |
6672 | ||
6673 | /* | |
6674 | * Initialization for EVPN | |
6675 | * Create | |
6676 | * VNI hash table | |
6677 | * hash for RT to VNI | |
14c1a7bf | 6678 | */ |
d62a17ae | 6679 | void bgp_evpn_init(struct bgp *bgp) |
6680 | { | |
6681 | bgp->vnihash = | |
6682 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
6683 | bgp->vni_svi_hash = |
6684 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
6685 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 6686 | bgp->import_rt_hash = |
6687 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6688 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6689 | bgp->vrf_import_rt_hash = |
6690 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6691 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6692 | bgp->vrf_import_rtl = list_new(); |
6693 | bgp->vrf_import_rtl->cmp = | |
ca337b46 SW |
6694 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6695 | bgp->vrf_import_rtl->del = evpn_vrf_rt_del; | |
c581d8b0 MK |
6696 | bgp->vrf_export_rtl = list_new(); |
6697 | bgp->vrf_export_rtl->cmp = | |
ca337b46 SW |
6698 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6699 | bgp->vrf_export_rtl->del = evpn_vrf_rt_del; | |
6a8657d0 | 6700 | bgp->l2vnis = list_new(); |
64465785 | 6701 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6702 | /* By default Duplicate Address Dection is enabled. |
6703 | * Max-moves (N) 5, detection time (M) 180 | |
6704 | * default action is warning-only | |
6705 | * freeze action permanently freezes address, | |
6706 | * and freeze time (auto-recovery) is disabled. | |
6707 | */ | |
6708 | if (bgp->evpn_info) { | |
6709 | bgp->evpn_info->dup_addr_detect = true; | |
6710 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6711 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6712 | bgp->evpn_info->dad_freeze = false; | |
6713 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6714 | /* Initialize zebra vxlan */ |
6715 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6716 | /* Enable PIP feature by default for bgp vrf instance */ |
6717 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6718 | struct bgp *bgp_default; | |
6719 | ||
6720 | bgp->evpn_info->advertise_pip = true; | |
6721 | bgp_default = bgp_get_default(); | |
6722 | if (bgp_default) | |
6723 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6724 | } | |
85c8d83b | 6725 | } |
fd069644 DS |
6726 | |
6727 | /* Default BUM handling is to do head-end replication. */ | |
6728 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6729 | |
6730 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6731 | } |
10ebe1ab MK |
6732 | |
6733 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6734 | { | |
6735 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6736 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6737 | } |
44c69747 LK |
6738 | |
6739 | /* | |
6740 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6741 | */ | |
5f040085 | 6742 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6743 | { |
6744 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6745 | ||
6746 | if (!pfx || pfx->family != AF_EVPN) | |
6747 | return 0; | |
6748 | ||
6749 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6750 | return 0; | |
6751 | ||
6752 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6753 | } | |
7c312383 AD |
6754 | |
6755 | /* | |
6756 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6757 | */ | |
5a1ae2c2 | 6758 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6759 | { |
6760 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6761 | ||
6762 | /* | |
e11329ca | 6763 | * EVPN routes should be marked as valid only if the nexthop is |
6764 | * reachable. Only if this happens, the route should be imported | |
6765 | * (into VNI or VRF routing tables) and/or advertised. | |
fff7545a | 6766 | * Note: This is currently applied for EVPN type-1, type-2, |
6767 | * type-3, type-4 and type-5 routes. | |
6768 | * It may be tweaked later on for other routes, or | |
e11329ca | 6769 | * even removed completely when all routes are handled. |
7c312383 | 6770 | */ |
fa46a5cd AK |
6771 | if (pfx && pfx->family == AF_EVPN |
6772 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6773 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6774 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6775 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6776 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6777 | return true; |
6778 | ||
6779 | return false; | |
6780 | } | |
021b6596 AD |
6781 | |
6782 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6783 | { | |
6784 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6785 | struct evpn_remote_ip *ip; | |
6786 | ||
6787 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6788 | *ip = *key; | |
6789 | ip->macip_path_list = list_new(); | |
6790 | ||
6791 | return ip; | |
6792 | } | |
6793 | ||
6794 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6795 | { | |
6796 | const struct evpn_remote_ip *ip = p; | |
6797 | const struct ipaddr *addr = &ip->addr; | |
6798 | ||
6799 | if (IS_IPADDR_V4(addr)) | |
6800 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6801 | ||
6802 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6803 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6804 | } | |
6805 | ||
6806 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6807 | { | |
6808 | const struct evpn_remote_ip *ip1 = p1; | |
6809 | const struct evpn_remote_ip *ip2 = p2; | |
6810 | ||
761cc919 | 6811 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6812 | } |
6813 | ||
6814 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6815 | { | |
dc6cef73 AD |
6816 | if (!evpn_resolve_overlay_index()) |
6817 | return; | |
6818 | ||
021b6596 AD |
6819 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6820 | bgp_evpn_remote_ip_hash_cmp, | |
6821 | "BGP EVPN remote IP hash"); | |
6822 | } | |
6823 | ||
6824 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6825 | { | |
6826 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6827 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6828 | ||
6829 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6830 | ||
6831 | list_delete(&ip->macip_path_list); | |
6832 | ||
6833 | hash_release(vpn->remote_ip_hash, ip); | |
6834 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6835 | } | |
6836 | ||
6837 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6838 | { | |
dc6cef73 | 6839 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6840 | return; |
6841 | ||
6842 | hash_iterate(vpn->remote_ip_hash, | |
6843 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6844 | vpn); | |
6845 | ||
6846 | hash_free(vpn->remote_ip_hash); | |
6847 | vpn->remote_ip_hash = NULL; | |
6848 | } | |
6849 | ||
6850 | /* Add a remote MAC/IP route to hash table */ | |
6851 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6852 | struct bgp_path_info *pi) | |
6853 | { | |
6854 | struct evpn_remote_ip tmp; | |
6855 | struct evpn_remote_ip *ip; | |
6856 | struct prefix_evpn *evp; | |
6857 | ||
dc6cef73 AD |
6858 | if (!evpn_resolve_overlay_index()) |
6859 | return; | |
6860 | ||
6861 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6862 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6863 | return; | |
6864 | ||
021b6596 AD |
6865 | evp = (struct prefix_evpn *)&pi->net->p; |
6866 | ||
6867 | if (evp->family != AF_EVPN | |
6868 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6869 | || is_evpn_prefix_ipaddr_none(evp)) | |
6870 | return; | |
6871 | ||
6872 | tmp.addr = evp->prefix.macip_addr.ip; | |
6873 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6874 | if (ip) { | |
6875 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6876 | return; | |
6877 | (void)listnode_add(ip->macip_path_list, pi); | |
6878 | return; | |
6879 | } | |
6880 | ||
6881 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
021b6596 AD |
6882 | (void)listnode_add(ip->macip_path_list, pi); |
6883 | ||
6884 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6885 | } | |
6886 | ||
6887 | /* Delete a remote MAC/IP route from hash table */ | |
6888 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6889 | struct bgp_path_info *pi) | |
6890 | { | |
6891 | struct evpn_remote_ip tmp; | |
6892 | struct evpn_remote_ip *ip; | |
6893 | struct prefix_evpn *evp; | |
6894 | ||
dc6cef73 AD |
6895 | if (!evpn_resolve_overlay_index()) |
6896 | return; | |
6897 | ||
021b6596 AD |
6898 | evp = (struct prefix_evpn *)&pi->net->p; |
6899 | ||
6900 | if (evp->family != AF_EVPN | |
6901 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6902 | || is_evpn_prefix_ipaddr_none(evp)) | |
6903 | return; | |
6904 | ||
6905 | tmp.addr = evp->prefix.macip_addr.ip; | |
6906 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6907 | if (ip == NULL) | |
6908 | return; | |
6909 | ||
6910 | listnode_delete(ip->macip_path_list, pi); | |
6911 | ||
6912 | if (ip->macip_path_list->count == 0) { | |
6913 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6914 | hash_release(vpn->remote_ip_hash, ip); | |
889360dc | 6915 | list_delete(&ip->macip_path_list); |
021b6596 AD |
6916 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); |
6917 | } | |
6918 | } | |
6919 | ||
dc6cef73 AD |
6920 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6921 | void (*func)(struct hash_bucket *, | |
6922 | void *), | |
6923 | void *arg) | |
6924 | { | |
6925 | if (!evpn_resolve_overlay_index()) | |
6926 | return; | |
6927 | ||
6928 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6929 | } | |
6930 | ||
021b6596 AD |
6931 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6932 | { | |
6933 | char buf[INET6_ADDRSTRLEN]; | |
021b6596 AD |
6934 | struct listnode *node = NULL; |
6935 | struct bgp_path_info *pi = NULL; | |
6936 | struct vty *vty = (struct vty *)args; | |
6937 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6938 | ||
6939 | vty_out(vty, " Remote IP: %s\n", | |
6940 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6941 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
511211bf DA |
6942 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) |
6943 | vty_out(vty, " %pFX\n", &pi->net->p); | |
021b6596 AD |
6944 | } |
6945 | ||
6946 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6947 | { | |
6948 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6949 | struct vty *vty = (struct vty *)args; | |
6950 | ||
6951 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6952 | bgp_evpn_remote_ip_hash_iterate( |
6953 | vpn, | |
021b6596 AD |
6954 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6955 | vty); | |
6956 | vty_out(vty, "\n"); | |
6957 | } | |
6958 | ||
6959 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6960 | void *args) | |
6961 | { | |
6962 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6963 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6964 | ||
6965 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6966 | } | |
6967 | ||
6968 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6969 | void *args) | |
6970 | { | |
6971 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6972 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6973 | ||
6974 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6975 | } | |
6976 | ||
6977 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6978 | { | |
6979 | const struct bgpevpn *vpn = p; | |
6980 | ||
6981 | return jhash_1word(vpn->svi_ifindex, 0); | |
6982 | } | |
6983 | ||
6984 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6985 | { | |
6986 | const struct bgpevpn *vpn1 = p1; | |
6987 | const struct bgpevpn *vpn2 = p2; | |
6988 | ||
6989 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6990 | } | |
6991 | ||
6992 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
6993 | ifindex_t svi) | |
6994 | { | |
6995 | struct bgpevpn *vpn; | |
6996 | struct bgpevpn tmp; | |
6997 | ||
6006b807 | 6998 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
6999 | tmp.svi_ifindex = svi; |
7000 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
7001 | return vpn; | |
7002 | } | |
7003 | ||
7004 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
7005 | { | |
7006 | if (vpn->svi_ifindex == 0) | |
7007 | return; | |
7008 | ||
8e3aae66 | 7009 | (void)hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); |
021b6596 AD |
7010 | } |
7011 | ||
7012 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
7013 | struct bgpevpn *vpn) | |
7014 | { | |
7015 | if (vpn->svi_ifindex == 0) | |
7016 | return; | |
7017 | ||
7018 | hash_release(bgp->vni_svi_hash, vpn); | |
7019 | } | |
7020 | ||
7021 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
7022 | { | |
7023 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
7024 | struct vty *vty = (struct vty *)args; | |
7025 | ||
7026 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
7027 | } | |
7028 | ||
7029 | /* | |
7030 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
7031 | * gateway IP overlay index. | |
7032 | * This function returns true if there is a remote MAC/IP route for the gateway | |
7033 | * IP in the EVI of the nexthop SVI. | |
7034 | */ | |
7035 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
7036 | { | |
7037 | struct bgp *bgp_evpn = NULL; | |
7038 | struct bgpevpn *vpn = NULL; | |
7039 | struct evpn_remote_ip tmp; | |
7040 | struct prefix *p; | |
7041 | ||
dc6cef73 AD |
7042 | if (!evpn_resolve_overlay_index()) |
7043 | return false; | |
7044 | ||
021b6596 AD |
7045 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
7046 | return false; | |
7047 | ||
7048 | bgp_evpn = bgp_get_evpn(); | |
7049 | if (!bgp_evpn) | |
7050 | return false; | |
7051 | ||
7052 | /* | |
7053 | * Gateway IP is resolved by nht over SVI interface. | |
7054 | * Use this SVI to find corresponding EVI(L2 context) | |
7055 | */ | |
7056 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
7057 | if (!vpn) | |
7058 | return false; | |
7059 | ||
7060 | if (vpn->bgp_vrf != bnc->bgp) | |
7061 | return false; | |
7062 | ||
7063 | /* | |
7064 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
7065 | * which stores all the remote IP addresses received via MAC/IP routes | |
7066 | * in this EVI | |
7067 | */ | |
6006b807 | 7068 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
7069 | |
7070 | p = &bnc->prefix; | |
7071 | if (p->family == AF_INET) { | |
7072 | tmp.addr.ipa_type = IPADDR_V4; | |
7073 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
7074 | sizeof(struct in_addr)); | |
7075 | } else if (p->family == AF_INET6) { | |
7076 | tmp.addr.ipa_type = IPADDR_V6; | |
7077 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
7078 | sizeof(struct in6_addr)); | |
7079 | } else | |
7080 | return false; | |
7081 | ||
7082 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
7083 | return false; | |
7084 | ||
7085 | return true; | |
7086 | } | |
7087 | ||
7088 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
7089 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
7090 | struct ipaddr *addr, | |
7091 | bool resolve) | |
7092 | { | |
7093 | afi_t afi; | |
7094 | struct prefix p; | |
7095 | struct bgp_nexthop_cache *bnc; | |
7096 | struct bgp_nexthop_cache_head *tree = NULL; | |
7097 | ||
7098 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
7099 | return; | |
7100 | ||
6006b807 | 7101 | memset(&p, 0, sizeof(p)); |
021b6596 AD |
7102 | |
7103 | if (addr->ipa_type == IPADDR_V4) { | |
7104 | afi = AFI_IP; | |
7105 | p.family = AF_INET; | |
7106 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
7107 | sizeof(struct in_addr)); | |
7108 | p.prefixlen = IPV4_MAX_BITLEN; | |
7109 | } else if (addr->ipa_type == IPADDR_V6) { | |
7110 | afi = AFI_IP6; | |
7111 | p.family = AF_INET6; | |
7112 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
7113 | sizeof(struct in6_addr)); | |
7114 | p.prefixlen = IPV6_MAX_BITLEN; | |
7115 | } else | |
7116 | return; | |
7117 | ||
7118 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
35aae5c9 | 7119 | bnc = bnc_find(tree, &p, 0, 0); |
021b6596 AD |
7120 | |
7121 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
7122 | return; | |
7123 | ||
7124 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
7125 | return; | |
7126 | ||
511211bf DA |
7127 | if (BGP_DEBUG(nht, NHT)) |
7128 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %pFX", | |
021b6596 | 7129 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, |
511211bf DA |
7130 | vpn->vni, (resolve ? "add" : "delete"), |
7131 | &bnc->prefix); | |
021b6596 AD |
7132 | |
7133 | /* | |
7134 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
7135 | * Set nexthop as valid only if it is already L3 reachable | |
7136 | */ | |
7137 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
7138 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7139 | bnc->flags |= BGP_NEXTHOP_VALID; | |
7140 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7141 | evaluate_paths(bnc); | |
7142 | } | |
7143 | ||
7144 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
7145 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
7146 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
7147 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7148 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7149 | evaluate_paths(bnc); | |
7150 | } | |
7151 | } | |
7152 | ||
dc6cef73 AD |
7153 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
7154 | void *arg) | |
7155 | { | |
7156 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7157 | struct bgp_dest *dest; | |
7158 | struct bgp_path_info *pi; | |
7159 | ||
7160 | bgp_evpn_remote_ip_hash_init(vpn); | |
7161 | ||
852d9f97 | 7162 | for (dest = bgp_table_top(vpn->ip_table); dest; |
dc6cef73 AD |
7163 | dest = bgp_route_next(dest)) |
7164 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
7165 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
7166 | } | |
7167 | ||
7168 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
7169 | void *arg) | |
7170 | { | |
7171 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7172 | ||
7173 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
7174 | } | |
742341e1 SW |
7175 | |
7176 | /* | |
7177 | * Helper function for getting the correct label index for l3vni. | |
7178 | * | |
7179 | * Returns the label with the l3vni of the path's label stack. | |
7180 | * | |
7181 | * L3vni is always last label. Type5 will only | |
7182 | * have one label, Type2 will have two. | |
7183 | * | |
7184 | */ | |
7185 | mpls_label_t *bgp_evpn_path_info_labels_get_l3vni(mpls_label_t *labels, | |
7186 | uint32_t num_labels) | |
7187 | { | |
7188 | if (!labels) | |
7189 | return NULL; | |
7190 | ||
7191 | if (!num_labels) | |
7192 | return NULL; | |
7193 | ||
7194 | return &labels[num_labels - 1]; | |
7195 | } | |
7196 | ||
7197 | /* | |
7198 | * Returns the l3vni of the path converted from the label stack. | |
7199 | */ | |
7200 | vni_t bgp_evpn_path_info_get_l3vni(const struct bgp_path_info *pi) | |
7201 | { | |
7202 | if (!pi->extra) | |
7203 | return 0; | |
7204 | ||
7205 | return label2vni(bgp_evpn_path_info_labels_get_l3vni( | |
7206 | pi->extra->label, pi->extra->num_labels)); | |
7207 | } | |
7208 | ||
7209 | /* | |
7210 | * Returns true if the l3vni of any of this path doesn't match vrf's l3vni. | |
7211 | */ | |
7212 | static bool bgp_evpn_path_is_dvni(const struct bgp *bgp_vrf, | |
7213 | const struct bgp_path_info *pi) | |
7214 | { | |
7215 | vni_t vni = 0; | |
7216 | ||
7217 | vni = bgp_evpn_path_info_get_l3vni(pi); | |
7218 | ||
7219 | if ((vni > 0) && (vni != bgp_vrf->l3vni)) | |
7220 | return true; | |
7221 | ||
7222 | return false; | |
7223 | } | |
7224 | ||
7225 | /* | |
7226 | * Returns true if the l3vni of any of the mpath's doesn't match vrf's l3vni. | |
7227 | */ | |
7228 | bool bgp_evpn_mpath_has_dvni(const struct bgp *bgp_vrf, | |
7229 | struct bgp_path_info *mpinfo) | |
7230 | { | |
7231 | for (; mpinfo; mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
7232 | if (bgp_evpn_path_is_dvni(bgp_vrf, mpinfo)) | |
7233 | return true; | |
7234 | } | |
7235 | ||
7236 | return false; | |
7237 | } |