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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; | |
8f2a51b7 | 580 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval, true); |
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 | */ | |
0da34e49 DA |
677 | struct bgp_dest *bgp_evpn_global_node_lookup( |
678 | struct bgp_table *table, safi_t safi, const struct prefix_evpn *evp, | |
679 | struct prefix_rd *prd, const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
680 | { |
681 | struct prefix_evpn global_p; | |
682 | ||
683 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
684 | /* prefix in the global table doesn't include the VTEP-IP so | |
685 | * we need to create a different copy of the prefix | |
686 | */ | |
687 | evpn_type1_prefix_global_copy(&global_p, evp); | |
688 | evp = &global_p; | |
34c7f35f SW |
689 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
690 | local_pi) { | |
691 | /* | |
852d9f97 SW |
692 | * prefix in the global table needs MAC/IP, ensure they are |
693 | * present, using one's from local table's path_info. | |
34c7f35f | 694 | */ |
852d9f97 SW |
695 | if (is_evpn_prefix_ipaddr_none(evp)) { |
696 | /* VNI MAC -> Global */ | |
697 | evpn_type2_prefix_global_copy( | |
698 | &global_p, evp, NULL /* mac */, | |
699 | evpn_type2_path_info_get_ip(local_pi)); | |
700 | } else { | |
701 | /* VNI IP -> Global */ | |
702 | evpn_type2_prefix_global_copy( | |
703 | &global_p, evp, | |
704 | evpn_type2_path_info_get_mac(local_pi), | |
705 | NULL /* ip */); | |
706 | } | |
707 | ||
c44ab6f1 AK |
708 | evp = &global_p; |
709 | } | |
59d6b4d6 | 710 | return bgp_safi_node_lookup(table, safi, (struct prefix *)evp, prd); |
c44ab6f1 AK |
711 | } |
712 | ||
34c7f35f | 713 | /* |
852d9f97 | 714 | * Wrapper for node get in VNI IP table. |
34c7f35f | 715 | */ |
852d9f97 SW |
716 | struct bgp_dest *bgp_evpn_vni_ip_node_get(struct bgp_table *const table, |
717 | const struct prefix_evpn *evp, | |
718 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
719 | { |
720 | struct prefix_evpn vni_p; | |
721 | ||
722 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
723 | /* prefix in the global table doesn't include the VTEP-IP so | |
724 | * we need to create a different copy for the VNI | |
725 | */ | |
852d9f97 SW |
726 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
727 | parent_pi->attr->nexthop); | |
34c7f35f | 728 | evp = &vni_p; |
852d9f97 SW |
729 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
730 | /* Only MAC-IP should go into this table, not mac-only */ | |
731 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
732 | ||
34c7f35f | 733 | /* |
852d9f97 | 734 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 735 | * we need to create a different copy of the prefix. |
34c7f35f | 736 | */ |
852d9f97 | 737 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
738 | evp = &vni_p; |
739 | } | |
740 | return bgp_node_get(table, (struct prefix *)evp); | |
741 | } | |
742 | ||
743 | /* | |
852d9f97 | 744 | * Wrapper for node lookup in VNI IP table. |
34c7f35f | 745 | */ |
852d9f97 SW |
746 | struct bgp_dest * |
747 | bgp_evpn_vni_ip_node_lookup(const struct bgp_table *const table, | |
748 | const struct prefix_evpn *evp, | |
749 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
750 | { |
751 | struct prefix_evpn vni_p; | |
752 | ||
753 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
754 | /* prefix in the global table doesn't include the VTEP-IP so | |
755 | * we need to create a different copy for the VNI | |
756 | */ | |
852d9f97 SW |
757 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
758 | parent_pi->attr->nexthop); | |
34c7f35f | 759 | evp = &vni_p; |
852d9f97 SW |
760 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
761 | /* Only MAC-IP should go into this table, not mac-only */ | |
762 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
763 | ||
34c7f35f | 764 | /* |
852d9f97 | 765 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 766 | * we need to create a different copy of the prefix. |
34c7f35f | 767 | */ |
852d9f97 | 768 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
769 | evp = &vni_p; |
770 | } | |
771 | return bgp_node_lookup(table, (struct prefix *)evp); | |
772 | } | |
773 | ||
852d9f97 SW |
774 | /* |
775 | * Wrapper for node get in VNI MAC table. | |
776 | */ | |
777 | struct bgp_dest * | |
778 | bgp_evpn_vni_mac_node_get(struct bgp_table *const table, | |
779 | const struct prefix_evpn *evp, | |
780 | const struct bgp_path_info *parent_pi) | |
781 | { | |
782 | struct prefix_evpn vni_p; | |
783 | ||
784 | /* Only type-2 should ever go into this table */ | |
785 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
786 | ||
787 | /* | |
788 | * prefix in the vni MAC table doesn't include IP so | |
789 | * we need to create a different copy of the prefix. | |
790 | */ | |
791 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
792 | evp = &vni_p; | |
793 | return bgp_node_get(table, (struct prefix *)evp); | |
794 | } | |
795 | ||
796 | /* | |
797 | * Wrapper for node lookup in VNI MAC table. | |
798 | */ | |
799 | struct bgp_dest * | |
800 | bgp_evpn_vni_mac_node_lookup(const struct bgp_table *const table, | |
801 | const struct prefix_evpn *evp, | |
802 | const struct bgp_path_info *parent_pi) | |
803 | { | |
804 | struct prefix_evpn vni_p; | |
805 | ||
806 | /* Only type-2 should ever go into this table */ | |
807 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
808 | ||
809 | /* | |
810 | * prefix in the vni MAC table doesn't include IP so | |
811 | * we need to create a different copy of the prefix. | |
812 | */ | |
813 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
814 | evp = &vni_p; | |
815 | return bgp_node_lookup(table, (struct prefix *)evp); | |
816 | } | |
817 | ||
818 | /* | |
819 | * Wrapper for node get in both VNI tables. | |
820 | */ | |
821 | struct bgp_dest *bgp_evpn_vni_node_get(struct bgpevpn *vpn, | |
822 | const struct prefix_evpn *p, | |
823 | const struct bgp_path_info *parent_pi) | |
824 | { | |
825 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
826 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
827 | return bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
828 | ||
829 | return bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
830 | } | |
831 | ||
832 | /* | |
833 | * Wrapper for node lookup in both VNI tables. | |
834 | */ | |
835 | struct bgp_dest *bgp_evpn_vni_node_lookup(const struct bgpevpn *vpn, | |
836 | const struct prefix_evpn *p, | |
837 | const struct bgp_path_info *parent_pi) | |
838 | { | |
839 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
840 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
841 | return bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, | |
842 | parent_pi); | |
843 | ||
844 | return bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
845 | } | |
846 | ||
128ea8ab | 847 | /* |
848 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 849 | */ |
d62a17ae | 850 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 851 | const struct prefix_evpn *p, |
34c7f35f | 852 | const struct ethaddr *mac, |
d62a17ae | 853 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 854 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 855 | { |
856 | struct stream *s; | |
0ffd0fb5 | 857 | uint16_t ipa_len; |
c44ab6f1 | 858 | static struct in_addr zero_remote_vtep_ip; |
90f30caa | 859 | bool esi_valid; |
d62a17ae | 860 | |
861 | /* Check socket. */ | |
862 | if (!zclient || zclient->sock < 0) | |
863 | return 0; | |
864 | ||
865 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
866 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
867 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
868 | zlog_debug( |
869 | "%s: No zebra instance to talk to, not installing remote macip", | |
870 | __func__); | |
d62a17ae | 871 | return 0; |
bb4ef1ae | 872 | } |
c44ab6f1 AK |
873 | |
874 | if (!esi) | |
875 | esi = zero_esi; | |
d62a17ae | 876 | s = zclient->obuf; |
877 | stream_reset(s); | |
878 | ||
996c9314 LB |
879 | zclient_create_header( |
880 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
881 | bgp->vrf_id); | |
d62a17ae | 882 | stream_putl(s, vpn->vni); |
34c7f35f SW |
883 | |
884 | if (mac) /* Mac Addr */ | |
885 | stream_put(s, &mac->octet, ETH_ALEN); | |
886 | else | |
887 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); | |
888 | ||
d62a17ae | 889 | /* IP address length and IP address, if any. */ |
3714a385 | 890 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 891 | stream_putw(s, 0); |
d62a17ae | 892 | else { |
3714a385 | 893 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 894 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 895 | stream_putw(s, ipa_len); |
3714a385 | 896 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 897 | } |
9c7edc03 AK |
898 | /* If the ESI is valid that becomes the nexthop; tape out the |
899 | * VTEP-IP for that case | |
c44ab6f1 | 900 | */ |
90f30caa AK |
901 | if (bgp_evpn_is_esi_valid(esi)) { |
902 | esi_valid = true; | |
c44ab6f1 | 903 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
90f30caa AK |
904 | } else { |
905 | esi_valid = false; | |
9c7edc03 | 906 | stream_put_in_addr(s, &remote_vtep_ip); |
90f30caa | 907 | } |
d62a17ae | 908 | |
ead40654 | 909 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 910 | /* Also TX the sequence number of the best route. */ |
911 | if (add) { | |
ead40654 | 912 | stream_putc(s, flags); |
f07e1c99 | 913 | stream_putl(s, seq); |
c44ab6f1 | 914 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 915 | } |
d62a17ae | 916 | |
917 | stream_putw_at(s, 0, stream_get_endp(s)); | |
918 | ||
90f30caa AK |
919 | if (bgp_debug_zebra(NULL)) { |
920 | char esi_buf[ESI_STR_LEN]; | |
921 | ||
922 | if (esi_valid) | |
923 | esi_to_str(esi, esi_buf, sizeof(esi_buf)); | |
924 | else | |
925 | snprintf(esi_buf, sizeof(esi_buf), "-"); | |
996c9314 | 926 | zlog_debug( |
90f30caa | 927 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4 esi %s", |
996c9314 | 928 | add ? "ADD" : "DEL", vpn->vni, |
852d9f97 SW |
929 | (mac ? mac : &p->prefix.macip_addr.mac), |
930 | &p->prefix.macip_addr.ip, flags, seq, &remote_vtep_ip, | |
931 | esi_buf); | |
90f30caa | 932 | } |
d62a17ae | 933 | |
23aa35ad AK |
934 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
935 | esi); | |
936 | ||
d62a17ae | 937 | return zclient_send_message(zclient); |
7ef5a232 | 938 | } |
b18825eb | 939 | |
128ea8ab | 940 | /* |
941 | * Add (update) or delete remote VTEP from zebra. | |
942 | */ | |
d62a17ae | 943 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
944 | const struct prefix_evpn *p, |
945 | int flood_control, int add) | |
128ea8ab | 946 | { |
d62a17ae | 947 | struct stream *s; |
128ea8ab | 948 | |
d62a17ae | 949 | /* Check socket. */ |
950 | if (!zclient || zclient->sock < 0) | |
951 | return 0; | |
128ea8ab | 952 | |
d62a17ae | 953 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
954 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
955 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
956 | zlog_debug( |
957 | "%s: No zebra instance to talk to, not installing remote vtep", | |
958 | __func__); | |
d62a17ae | 959 | return 0; |
bb4ef1ae | 960 | } |
128ea8ab | 961 | |
d62a17ae | 962 | s = zclient->obuf; |
963 | stream_reset(s); | |
128ea8ab | 964 | |
996c9314 LB |
965 | zclient_create_header( |
966 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
967 | bgp->vrf_id); | |
d62a17ae | 968 | stream_putl(s, vpn->vni); |
3714a385 | 969 | if (is_evpn_prefix_ipaddr_v4(p)) |
970 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
971 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 972 | flog_err( |
e50f7cfd | 973 | EC_BGP_VTEP_INVALID, |
d62a17ae | 974 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
975 | add ? "ADD" : "DEL", vpn->vni); | |
976 | return -1; | |
977 | } | |
b16dd019 | 978 | stream_putl(s, flood_control); |
128ea8ab | 979 | |
d62a17ae | 980 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 981 | |
d62a17ae | 982 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 983 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 984 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 985 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 986 | |
23aa35ad AK |
987 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
988 | ||
d62a17ae | 989 | return zclient_send_message(zclient); |
128ea8ab | 990 | } |
991 | ||
342dd0c6 | 992 | /* |
993 | * Build extended communities for EVPN prefix route. | |
994 | */ | |
995 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
996 | struct attr *attr) | |
997 | { | |
998 | struct ecommunity ecom_encap; | |
342dd0c6 | 999 | struct ecommunity_val eval; |
1000 | struct ecommunity_val eval_rmac; | |
1001 | bgp_encap_types tnl_type; | |
1002 | struct listnode *node, *nnode; | |
ca337b46 | 1003 | struct vrf_route_target *l3rt; |
fab92da7 | 1004 | struct ecommunity *old_ecom; |
ca337b46 | 1005 | struct ecommunity *ecom; |
342dd0c6 | 1006 | struct list *vrf_export_rtl = NULL; |
1007 | ||
1008 | /* Encap */ | |
1009 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1010 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1011 | encode_encap_extcomm(tnl_type, &eval); | |
1012 | ecom_encap.size = 1; | |
34540b0d | 1013 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1014 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 1015 | |
1016 | /* Add Encap */ | |
b53e67a3 DA |
1017 | if (bgp_attr_get_ecommunity(attr)) { |
1018 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 1019 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
1020 | if (!old_ecom->refcnt) | |
1021 | ecommunity_free(&old_ecom); | |
1022 | } else | |
1023 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 1024 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 1025 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 1026 | |
1027 | /* Add the export RTs for L3VNI/VRF */ | |
1028 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
ca337b46 | 1029 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, l3rt)) |
b53e67a3 | 1030 | bgp_attr_set_ecommunity( |
ca337b46 SW |
1031 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), |
1032 | l3rt->ecom)); | |
342dd0c6 | 1033 | |
1034 | /* add the router mac extended community */ | |
1035 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 1036 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1037 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1038 | true, true); | |
342dd0c6 | 1039 | } |
342dd0c6 | 1040 | } |
1041 | ||
128ea8ab | 1042 | /* |
1ec31309 | 1043 | * Build extended communities for EVPN route. |
1044 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
1045 | * and ENCAP extended communities are applicable for all routes. | |
1046 | * The default gateway extended community and MAC mobility (sticky) extended | |
1047 | * community are added as needed based on passed settings - only for type-2 | |
1048 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
1049 | * added, if present, based on passed settings - only for non-link-local | |
1050 | * type-2 routes. | |
128ea8ab | 1051 | */ |
7ec156a9 | 1052 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 1053 | int add_l3_ecomm) |
128ea8ab | 1054 | { |
d62a17ae | 1055 | struct ecommunity ecom_encap; |
1056 | struct ecommunity ecom_sticky; | |
ead40654 | 1057 | struct ecommunity ecom_default_gw; |
68e33151 | 1058 | struct ecommunity ecom_na; |
d62a17ae | 1059 | struct ecommunity_val eval; |
1060 | struct ecommunity_val eval_sticky; | |
ead40654 | 1061 | struct ecommunity_val eval_default_gw; |
bc59a672 | 1062 | struct ecommunity_val eval_rmac; |
68e33151 | 1063 | struct ecommunity_val eval_na; |
9c7edc03 | 1064 | bool proxy; |
68e33151 | 1065 | |
d62a17ae | 1066 | bgp_encap_types tnl_type; |
1067 | struct listnode *node, *nnode; | |
1068 | struct ecommunity *ecom; | |
ca337b46 | 1069 | struct vrf_route_target *l3rt; |
d7c0a89a | 1070 | uint32_t seqnum; |
7a3e76f1 | 1071 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 1072 | |
d62a17ae | 1073 | /* Encap */ |
1074 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1075 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1076 | encode_encap_extcomm(tnl_type, &eval); | |
1077 | ecom_encap.size = 1; | |
34540b0d | 1078 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1079 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 1080 | |
d62a17ae | 1081 | /* Add Encap */ |
b53e67a3 | 1082 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 1083 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 1084 | |
7a3e76f1 | 1085 | /* Add the export RTs for L2VNI */ |
d62a17ae | 1086 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
1087 | bgp_attr_set_ecommunity( |
1088 | attr, | |
1089 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 1090 | |
1ec31309 | 1091 | /* Add the export RTs for L3VNI if told to - caller determines |
1092 | * when this should be done. | |
523cafc4 | 1093 | */ |
1ec31309 | 1094 | if (add_l3_ecomm) { |
7ec156a9 MK |
1095 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
1096 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
1097 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
ca337b46 | 1098 | l3rt)) |
b53e67a3 DA |
1099 | bgp_attr_set_ecommunity( |
1100 | attr, | |
1101 | ecommunity_merge( | |
1102 | bgp_attr_get_ecommunity(attr), | |
ca337b46 | 1103 | l3rt->ecom)); |
7ec156a9 | 1104 | } |
f1f8b53c | 1105 | } |
7a3e76f1 | 1106 | |
1ec31309 | 1107 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 1108 | if (attr->sticky) { |
1109 | seqnum = 0; | |
1110 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
1111 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
1112 | ecom_sticky.size = 1; | |
34540b0d | 1113 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1114 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
1115 | bgp_attr_set_ecommunity( |
1116 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1117 | &ecom_sticky)); | |
d62a17ae | 1118 | } |
c85c03c7 | 1119 | |
1ec31309 | 1120 | /* Add RMAC, if told to. */ |
1121 | if (add_l3_ecomm) { | |
bc59a672 | 1122 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1123 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1124 | true, true); | |
bc59a672 MK |
1125 | } |
1126 | ||
1ec31309 | 1127 | /* Add default gateway, if needed. */ |
ead40654 MK |
1128 | if (attr->default_gw) { |
1129 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
1130 | encode_default_gw_extcomm(&eval_default_gw); | |
1131 | ecom_default_gw.size = 1; | |
34540b0d | 1132 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 1133 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
1134 | bgp_attr_set_ecommunity( |
1135 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1136 | &ecom_default_gw)); | |
ead40654 MK |
1137 | } |
1138 | ||
9c7edc03 AK |
1139 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
1140 | if (attr->router_flag || proxy) { | |
68e33151 | 1141 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 1142 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 1143 | ecom_na.size = 1; |
34540b0d | 1144 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 1145 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
1146 | bgp_attr_set_ecommunity( |
1147 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1148 | &ecom_na)); | |
68e33151 | 1149 | } |
128ea8ab | 1150 | } |
1151 | ||
1152 | /* | |
1153 | * Add MAC mobility extended community to attribute. | |
1154 | */ | |
d7c0a89a | 1155 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 1156 | { |
1157 | struct ecommunity ecom_tmp; | |
1158 | struct ecommunity_val eval; | |
d7c0a89a | 1159 | uint8_t *ecom_val_ptr; |
f6e07e1b | 1160 | uint32_t i; |
d7c0a89a | 1161 | uint8_t *pnt; |
d62a17ae | 1162 | int type = 0; |
1163 | int sub_type = 0; | |
b53e67a3 | 1164 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 1165 | |
1166 | /* Build MM */ | |
1167 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
1168 | ||
1169 | /* Find current MM ecommunity */ | |
421bb26a | 1170 | ecom_val_ptr = NULL; |
d62a17ae | 1171 | |
b53e67a3 DA |
1172 | if (ecomm) { |
1173 | for (i = 0; i < ecomm->size; i++) { | |
1174 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 1175 | type = *pnt++; |
1176 | sub_type = *pnt++; | |
1177 | ||
1178 | if (type == ECOMMUNITY_ENCODE_EVPN | |
1179 | && sub_type | |
1180 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 1181 | ecom_val_ptr = |
b53e67a3 | 1182 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 1183 | break; |
1184 | } | |
1185 | } | |
1186 | } | |
1187 | ||
1188 | /* Update the existing MM ecommunity */ | |
421bb26a | 1189 | if (ecom_val_ptr) { |
b53e67a3 | 1190 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 1191 | } |
1192 | /* Add MM to existing */ | |
1193 | else { | |
1194 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
1195 | ecom_tmp.size = 1; | |
34540b0d | 1196 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1197 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 1198 | |
b53e67a3 DA |
1199 | if (ecomm) |
1200 | bgp_attr_set_ecommunity( | |
1201 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 1202 | else |
b53e67a3 DA |
1203 | bgp_attr_set_ecommunity(attr, |
1204 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 1205 | } |
128ea8ab | 1206 | } |
1207 | ||
1208 | /* Install EVPN route into zebra. */ | |
d62a17ae | 1209 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
1210 | const struct prefix_evpn *p, |
1211 | struct bgp_path_info *pi) | |
128ea8ab | 1212 | { |
d62a17ae | 1213 | int ret; |
d594a14c | 1214 | uint8_t flags; |
58cf0823 | 1215 | int flood_control = VXLAN_FLOOD_DISABLED; |
9c7edc03 | 1216 | uint32_t seq; |
128ea8ab | 1217 | |
d594a14c AK |
1218 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1219 | flags = 0; | |
9c7edc03 AK |
1220 | |
1221 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
1222 | if (pi->attr->sticky) | |
1223 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1224 | if (pi->attr->default_gw) | |
1225 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
1226 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1227 | pi->attr->router_flag) | |
1228 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1229 | ||
1230 | seq = mac_mobility_seqnum(pi->attr); | |
1231 | /* if local ES notify zebra that this is a sync path */ | |
1232 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
1233 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1234 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
1235 | SET_FLAG(flags, | |
1236 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1237 | } | |
1238 | } else { | |
1239 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
1240 | return 0; | |
1241 | ||
1242 | /* if a local path is being turned around and sent | |
1243 | * to zebra it is because it is a sync path on | |
1244 | * a local ES | |
1245 | */ | |
1246 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1247 | /* supply the highest peer seq number to zebra | |
1248 | * for MM seq syncing | |
1249 | */ | |
1250 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
1251 | /* if any of the paths from the peer have the ROUTER | |
1252 | * flag set install the local entry as a router entry | |
1253 | */ | |
1254 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1255 | (pi->attr->es_flags & | |
1256 | ATTR_ES_PEER_ROUTER)) | |
1257 | SET_FLAG(flags, | |
1258 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1259 | ||
1260 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
1261 | SET_FLAG(flags, | |
1262 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1263 | } | |
1264 | ||
d594a14c | 1265 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1266 | bgp, vpn, p, |
1267 | (is_evpn_prefix_ipaddr_none(p) | |
1268 | ? NULL /* MAC update */ | |
1269 | : evpn_type2_path_info_get_mac( | |
1270 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1271 | pi->attr->nexthop, 1, flags, seq, |
1272 | bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
1273 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
1274 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 1275 | } else { |
2a3f51cf | 1276 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
1277 | case PMSI_TNLTYPE_INGR_REPL: |
1278 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
1279 | break; | |
1280 | ||
1281 | case PMSI_TNLTYPE_PIM_SM: | |
1282 | flood_control = VXLAN_FLOOD_PIM_SM; | |
1283 | break; | |
1284 | ||
58cf0823 DS |
1285 | case PMSI_TNLTYPE_NO_INFO: |
1286 | case PMSI_TNLTYPE_RSVP_TE_P2MP: | |
1287 | case PMSI_TNLTYPE_MLDP_P2MP: | |
1288 | case PMSI_TNLTYPE_PIM_SSM: | |
1289 | case PMSI_TNLTYPE_PIM_BIDIR: | |
1290 | case PMSI_TNLTYPE_MLDP_MP2MP: | |
b16dd019 AK |
1291 | flood_control = VXLAN_FLOOD_DISABLED; |
1292 | break; | |
1293 | } | |
1294 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1295 | } |
128ea8ab | 1296 | |
d62a17ae | 1297 | return ret; |
128ea8ab | 1298 | } |
1299 | ||
1300 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1301 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1302 | const struct prefix_evpn *p, |
34c7f35f | 1303 | struct bgp_path_info *pi, bool is_sync) |
128ea8ab | 1304 | { |
d62a17ae | 1305 | int ret; |
128ea8ab | 1306 | |
d62a17ae | 1307 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
34c7f35f | 1308 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1309 | bgp, vpn, p, |
1310 | (is_evpn_prefix_ipaddr_none(p) | |
1311 | ? NULL /* MAC update */ | |
1312 | : evpn_type2_path_info_get_mac( | |
1313 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1314 | (is_sync ? zero_vtep_ip : pi->attr->nexthop), 0, 0, 0, |
1315 | NULL); | |
c44ab6f1 AK |
1316 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) |
1317 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1318 | else |
b16dd019 AK |
1319 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1320 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1321 | |
d62a17ae | 1322 | return ret; |
128ea8ab | 1323 | } |
1324 | ||
1325 | /* | |
1326 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1327 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1328 | * from peers. | |
1329 | */ | |
d62a17ae | 1330 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1331 | struct bgp_dest *dest, |
9c7edc03 AK |
1332 | struct bgp_path_info *old_local, |
1333 | struct bgp_path_info *new_select) | |
128ea8ab | 1334 | { |
9bcb3eef | 1335 | struct bgp_dest *global_dest; |
40381db7 | 1336 | struct bgp_path_info *pi; |
d62a17ae | 1337 | afi_t afi = AFI_L2VPN; |
1338 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1339 | |
9c7edc03 | 1340 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1341 | char esi_buf[ESI_STR_LEN]; |
1342 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1343 | struct prefix_evpn *evp = |
1344 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1345 | |
2dbe669b DA |
1346 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1347 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1348 | sizeof(esi_buf)), | |
1349 | new_select ? esi_to_str(&new_select->attr->esi, | |
1350 | esi_buf2, sizeof(esi_buf2)) | |
1351 | : ""); | |
9c7edc03 AK |
1352 | } |
1353 | ||
d62a17ae | 1354 | /* Locate route node in the global EVPN routing table. Note that |
1355 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1356 | * L3VPN routes. | |
1357 | */ | |
34c7f35f | 1358 | global_dest = bgp_evpn_global_node_lookup( |
0da34e49 | 1359 | bgp->rib[afi][safi], safi, |
34c7f35f SW |
1360 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), |
1361 | &vpn->prd, old_local); | |
9bcb3eef | 1362 | if (global_dest) { |
d62a17ae | 1363 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1364 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1365 | |
d62a17ae | 1366 | /* Schedule for processing - withdraws to peers happen from |
1367 | * this table. | |
1368 | */ | |
40381db7 | 1369 | if (pi) |
9bcb3eef DS |
1370 | bgp_process(bgp, global_dest, afi, safi); |
1371 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1372 | } |
128ea8ab | 1373 | |
d62a17ae | 1374 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1375 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1376 | } |
1377 | ||
1378 | /* | |
1379 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1380 | * if appropriate. | |
c44ab6f1 | 1381 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1382 | */ |
c44ab6f1 | 1383 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1384 | struct bgp_dest *dest) |
d62a17ae | 1385 | { |
4b7e6066 DS |
1386 | struct bgp_path_info *old_select, *new_select; |
1387 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1388 | afi_t afi = AFI_L2VPN; |
1389 | safi_t safi = SAFI_EVPN; | |
1390 | int ret = 0; | |
1391 | ||
1392 | /* Compute the best path. */ | |
9bcb3eef | 1393 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1394 | afi, safi); |
1395 | old_select = old_and_new.old; | |
1396 | new_select = old_and_new.new; | |
1397 | ||
1398 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1399 | * update to zebra RIB. |
1400 | * Remote routes and SYNC route (i.e. local routes with | |
1401 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1402 | * change. | |
d62a17ae | 1403 | */ |
1404 | if (old_select && old_select == new_select | |
1405 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1406 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1407 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1408 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1409 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1410 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1411 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1412 | ret = evpn_zebra_install( |
9bcb3eef DS |
1413 | bgp, vpn, |
1414 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1415 | dest), | |
d594a14c | 1416 | old_select); |
1defdda8 | 1417 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1418 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1419 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1420 | return ret; |
1421 | } | |
1422 | ||
1423 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1424 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1425 | |
1426 | /* bestpath has changed; update relevant fields and install or uninstall | |
1427 | * into the zebra RIB. | |
1428 | */ | |
1429 | if (old_select || new_select) | |
9bcb3eef | 1430 | bgp_bump_version(dest); |
d62a17ae | 1431 | |
1432 | if (old_select) | |
9bcb3eef | 1433 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1434 | if (new_select) { |
9bcb3eef DS |
1435 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1436 | bgp_path_info_unset_flag(dest, new_select, | |
1437 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1438 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1439 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1440 | } |
1441 | ||
9c7edc03 AK |
1442 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1443 | * to zebra | |
1444 | */ | |
d62a17ae | 1445 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1446 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1447 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1448 | ret = evpn_zebra_install( |
9bcb3eef DS |
1449 | bgp, vpn, |
1450 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1451 | new_select); |
d594a14c | 1452 | |
d62a17ae | 1453 | /* If an old best existed and it was a "local" route, the only |
1454 | * reason | |
1455 | * it would be supplanted is due to MAC mobility procedures. So, | |
1456 | * we | |
1457 | * need to do an implicit delete and withdraw that route from | |
1458 | * peers. | |
1459 | */ | |
9c7edc03 AK |
1460 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1461 | old_select && old_select->peer == bgp->peer_self | |
1462 | && old_select->type == ZEBRA_ROUTE_BGP | |
1463 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1464 | && vpn) | |
1465 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1466 | old_select, new_select); | |
d62a17ae | 1467 | } else { |
1468 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1469 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1470 | ret = evpn_zebra_uninstall( |
1471 | bgp, vpn, | |
9bcb3eef DS |
1472 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1473 | dest), | |
34c7f35f | 1474 | old_select, false); |
d62a17ae | 1475 | } |
1476 | ||
1477 | /* Clear any route change flags. */ | |
9bcb3eef | 1478 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1479 | |
18ee8310 | 1480 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1481 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1482 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1483 | |
1484 | return ret; | |
128ea8ab | 1485 | } |
1486 | ||
9c7edc03 AK |
1487 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1488 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1489 | { |
40381db7 | 1490 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1491 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1492 | |
9bcb3eef | 1493 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1494 | tmp_pi = tmp_pi->next) { |
1495 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1496 | local_pi = tmp_pi; |
9c7edc03 AK |
1497 | break; |
1498 | } | |
d62a17ae | 1499 | } |
c85c03c7 | 1500 | |
9c7edc03 | 1501 | return local_pi; |
c85c03c7 | 1502 | } |
1503 | ||
5e53dce3 | 1504 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1505 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1506 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1507 | struct attr *attr, int *route_changed) |
342dd0c6 | 1508 | { |
1509 | struct attr *attr_new = NULL; | |
40381db7 | 1510 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1511 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1512 | struct bgp_path_info *local_pi = NULL; |
1513 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1514 | |
5424b7ba | 1515 | *route_changed = 0; |
e2c7a84b | 1516 | |
1517 | /* See if this is an update of an existing route, or a new add. */ | |
1518 | local_pi = bgp_evpn_route_get_local_path(bgp_evpn, dest); | |
342dd0c6 | 1519 | |
2bb9eff4 | 1520 | /* |
0437e105 | 1521 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1522 | * Otherwise see if route attr has changed |
523cafc4 | 1523 | */ |
40381db7 | 1524 | if (!local_pi) { |
342dd0c6 | 1525 | |
5424b7ba MK |
1526 | /* route has changed as this is the first entry */ |
1527 | *route_changed = 1; | |
1528 | ||
342dd0c6 | 1529 | /* Add (or update) attribute to hash. */ |
1530 | attr_new = bgp_attr_intern(attr); | |
1531 | ||
1532 | /* create the route info from attribute */ | |
40381db7 | 1533 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1534 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1535 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1536 | |
b57ba6d2 | 1537 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1538 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1539 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1540 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1541 | pi->extra->num_labels = 1; | |
342dd0c6 | 1542 | |
1543 | /* add the route entry to route node*/ | |
9bcb3eef | 1544 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1545 | } else { |
1546 | ||
40381db7 DS |
1547 | tmp_pi = local_pi; |
1548 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1549 | |
1550 | /* attribute changed */ | |
1551 | *route_changed = 1; | |
1552 | ||
342dd0c6 | 1553 | /* The attribute has changed. */ |
1554 | /* Add (or update) attribute to hash. */ | |
1555 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1556 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1557 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1558 | |
1559 | /* Restore route, if needed. */ | |
40381db7 | 1560 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1561 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1562 | |
1563 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1564 | bgp_attr_unintern(&tmp_pi->attr); |
1565 | tmp_pi->attr = attr_new; | |
083ec940 | 1566 | tmp_pi->uptime = monotime(NULL); |
342dd0c6 | 1567 | } |
1568 | } | |
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | /* update evpn type-5 route entry */ | |
996c9314 | 1573 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1574 | struct attr *src_attr, afi_t src_afi, |
1575 | safi_t src_safi) | |
342dd0c6 | 1576 | { |
1577 | afi_t afi = AFI_L2VPN; | |
1578 | safi_t safi = SAFI_EVPN; | |
1579 | struct attr attr; | |
9bcb3eef | 1580 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1581 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1582 | int route_changed = 0; |
342dd0c6 | 1583 | |
5e53dce3 T |
1584 | bgp_evpn = bgp_get_evpn(); |
1585 | if (!bgp_evpn) | |
faafdfa8 | 1586 | return 0; |
342dd0c6 | 1587 | |
2f69f6d3 | 1588 | /* Build path attribute for this route - use the source attr, if |
1589 | * present, else treat as locally originated. | |
1590 | */ | |
1591 | if (src_attr) | |
6f4f49b2 | 1592 | attr = *src_attr; |
2f69f6d3 | 1593 | else { |
6006b807 | 1594 | memset(&attr, 0, sizeof(attr)); |
0f05ea43 | 1595 | bgp_attr_default_set(&attr, bgp_vrf, BGP_ORIGIN_IGP); |
2f69f6d3 | 1596 | } |
5394a276 | 1597 | |
5394a276 CS |
1598 | /* Advertise Primary IP (PIP) is enabled, send individual |
1599 | * IP (default instance router-id) as nexthop. | |
1600 | * PIP is disabled or vrr interface is not present | |
27727001 | 1601 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1602 | */ |
1603 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1604 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1605 | attr.nexthop = bgp_vrf->originator_ip; | |
1606 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1607 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1608 | } else { |
27727001 CS |
1609 | /* copy sys rmac */ |
1610 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1611 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1612 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1613 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1614 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1615 | if (bgp_debug_zebra(NULL)) |
1616 | zlog_debug( | |
1617 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1618 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1619 | } |
1620 | ||
c0d72166 DS |
1621 | if (bgp_debug_zebra(NULL)) |
1622 | zlog_debug( | |
1623 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1624 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1625 | &attr.nexthop); | |
5394a276 | 1626 | |
342dd0c6 | 1627 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1628 | |
6c995628 AD |
1629 | if (src_afi == AFI_IP6 && |
1630 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1631 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1632 | if (src_attr && | |
1633 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1634 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1635 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1636 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1637 | &src_attr->mp_nexthop_global, |
1638 | sizeof(struct in6_addr)); | |
1639 | } | |
1640 | } else if (src_afi == AFI_IP && | |
1641 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1642 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1643 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1644 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1645 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1646 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1647 | &src_attr->nexthop, sizeof(struct in_addr)); |
1648 | } | |
1649 | } | |
1650 | ||
342dd0c6 | 1651 | /* Setup RT and encap extended community */ |
1652 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1653 | ||
1654 | /* get the route node in global table */ | |
34c7f35f SW |
1655 | dest = bgp_evpn_global_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1656 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 1657 | assert(dest); |
342dd0c6 | 1658 | |
1659 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1660 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1661 | &route_changed); |
342dd0c6 | 1662 | |
1663 | /* schedule for processing and unlock node */ | |
5424b7ba | 1664 | if (route_changed) { |
9bcb3eef DS |
1665 | bgp_process(bgp_evpn, dest, afi, safi); |
1666 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1667 | } |
342dd0c6 | 1668 | |
1669 | /* uninten temporary */ | |
5ee65f6f | 1670 | if (!src_attr) |
1671 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1672 | return 0; |
1673 | } | |
1674 | ||
9c7edc03 | 1675 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1676 | struct bgp_dest *dest, uint32_t loc_seq, |
1677 | uint32_t *max_sync_seq, bool *active_on_peer, | |
36bac85c AK |
1678 | bool *peer_router, bool *proxy_from_peer, |
1679 | const struct ethaddr *mac) | |
9c7edc03 AK |
1680 | { |
1681 | struct bgp_path_info *tmp_pi; | |
1682 | struct bgp_path_info *second_best_path = NULL; | |
1683 | uint32_t tmp_mm_seq = 0; | |
1684 | esi_t *tmp_esi; | |
1685 | int paths_eq; | |
36bac85c AK |
1686 | struct ethaddr *tmp_mac; |
1687 | bool mac_cmp = false; | |
1688 | struct prefix_evpn *evp = (struct prefix_evpn *)&dest->p; | |
1689 | ||
1690 | ||
1691 | /* mac comparison is not needed for MAC-only routes */ | |
1692 | if (mac && !is_evpn_prefix_ipaddr_none(evp)) | |
1693 | mac_cmp = true; | |
9c7edc03 AK |
1694 | |
1695 | /* find the best non-local path. a local path can only be present | |
1696 | * as best path | |
1697 | */ | |
09319b4e DS |
1698 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1699 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1700 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1701 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1702 | continue; | |
1703 | ||
36bac85c AK |
1704 | /* ignore paths that have a different mac */ |
1705 | if (mac_cmp) { | |
1706 | tmp_mac = evpn_type2_path_info_get_mac(tmp_pi); | |
1707 | if (memcmp(mac, tmp_mac, sizeof(*mac))) | |
1708 | continue; | |
1709 | } | |
1710 | ||
9c7edc03 AK |
1711 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, |
1712 | second_best_path, &paths_eq)) | |
1713 | second_best_path = tmp_pi; | |
1714 | } | |
1715 | ||
1716 | if (!second_best_path) | |
1717 | return; | |
1718 | ||
1719 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1720 | /* if this has the same ES desination as the local path | |
1721 | * it is a sync path | |
1722 | */ | |
1723 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1724 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1725 | if (tmp_mm_seq < loc_seq) | |
1726 | return; | |
1727 | ||
1728 | /* we have a non-proxy path from the ES peer. */ | |
1729 | if (second_best_path->attr->es_flags & | |
1730 | ATTR_ES_PROXY_ADVERT) { | |
1731 | *proxy_from_peer = true; | |
1732 | } else { | |
1733 | *active_on_peer = true; | |
1734 | } | |
1735 | ||
1736 | if (second_best_path->attr->router_flag) | |
1737 | *peer_router = true; | |
1738 | ||
1739 | /* we use both proxy and non-proxy imports to | |
1740 | * determine the max sync sequence | |
1741 | */ | |
1742 | if (tmp_mm_seq > *max_sync_seq) | |
1743 | *max_sync_seq = tmp_mm_seq; | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1748 | * This is need for MM sequence number syncing and proxy advertisement. | |
1749 | * Note: The local path can only exist as a best path in the | |
1750 | * VPN route table. It will take precedence over all sync paths. | |
1751 | */ | |
1752 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1753 | struct bgp_dest *dest, |
1754 | struct attr *attr, | |
36bac85c AK |
1755 | uint32_t loc_seq, bool setup_sync, |
1756 | const struct ethaddr *mac) | |
9c7edc03 AK |
1757 | { |
1758 | esi_t *esi; | |
752eed47 DS |
1759 | struct prefix_evpn *evp = |
1760 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1761 | |
1762 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1763 | return; | |
1764 | ||
1765 | esi = bgp_evpn_attr_get_esi(attr); | |
1766 | if (bgp_evpn_is_esi_valid(esi)) { | |
1767 | if (setup_sync) { | |
1768 | uint32_t max_sync_seq = 0; | |
1769 | bool active_on_peer = false; | |
1770 | bool peer_router = false; | |
1771 | bool proxy_from_peer = false; | |
1772 | ||
09319b4e DS |
1773 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1774 | &max_sync_seq, &active_on_peer, | |
36bac85c AK |
1775 | &peer_router, &proxy_from_peer, |
1776 | mac); | |
9c7edc03 AK |
1777 | attr->mm_sync_seqnum = max_sync_seq; |
1778 | if (active_on_peer) | |
1779 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1780 | else | |
1781 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1782 | if (proxy_from_peer) | |
1783 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1784 | else | |
1785 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1786 | if (peer_router) | |
1787 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1788 | else | |
1789 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1790 | ||
1791 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1792 | char esi_buf[ESI_STR_LEN]; |
1793 | ||
2dbe669b DA |
1794 | zlog_debug( |
1795 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1796 | evp, | |
9c7edc03 | 1797 | esi_to_str(esi, esi_buf, |
2dbe669b | 1798 | sizeof(esi_buf)), |
9c7edc03 | 1799 | max_sync_seq, |
2dbe669b DA |
1800 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1801 | ? "peer-active " | |
1802 | : "", | |
1803 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1804 | ? "peer-proxy " | |
1805 | : "", | |
1806 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1807 | ? "peer-router " | |
1808 | : ""); | |
9c7edc03 AK |
1809 | } |
1810 | } | |
1811 | } else { | |
1812 | attr->mm_sync_seqnum = 0; | |
1813 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1814 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1815 | } | |
1816 | } | |
1817 | ||
128ea8ab | 1818 | /* |
852d9f97 | 1819 | * Create or update EVPN route entry. This could be in the VNI route tables |
128ea8ab | 1820 | * or the global route table. |
1821 | */ | |
d62a17ae | 1822 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1823 | afi_t afi, safi_t safi, |
1824 | struct bgp_dest *dest, struct attr *attr, | |
852d9f97 SW |
1825 | const struct ethaddr *mac, |
1826 | const struct ipaddr *ip, int add, | |
34c7f35f SW |
1827 | struct bgp_path_info **pi, uint8_t flags, |
1828 | uint32_t seq, bool vpn_rt, bool *old_is_sync) | |
d62a17ae | 1829 | { |
40381db7 DS |
1830 | struct bgp_path_info *tmp_pi; |
1831 | struct bgp_path_info *local_pi; | |
d62a17ae | 1832 | struct attr *attr_new; |
7171949d | 1833 | struct attr local_attr; |
b57ba6d2 | 1834 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1835 | uint32_t num_labels = 1; |
d62a17ae | 1836 | int route_change = 1; |
d7c0a89a | 1837 | uint8_t sticky = 0; |
b54892e0 | 1838 | const struct prefix_evpn *evp; |
d62a17ae | 1839 | |
40381db7 | 1840 | *pi = NULL; |
9bcb3eef | 1841 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1842 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1843 | |
f07e1c99 | 1844 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1845 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1846 | |
1847 | /* If route doesn't exist already, create a new one, if told to. | |
1848 | * Otherwise act based on whether the attributes of the route have | |
1849 | * changed or not. | |
1850 | */ | |
40381db7 | 1851 | if (!local_pi && !add) |
d62a17ae | 1852 | return 0; |
1853 | ||
9c7edc03 AK |
1854 | if (old_is_sync && local_pi) |
1855 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1856 | ||
1857 | /* if a local path is being added with a non-zero esi look | |
1858 | * for SYNC paths from ES peers and bubble up the sync-info | |
1859 | */ | |
36bac85c | 1860 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt, mac); |
9c7edc03 | 1861 | |
f07e1c99 | 1862 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1863 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1864 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1865 | |
40381db7 | 1866 | if (!local_pi) { |
7171949d | 1867 | local_attr = *attr; |
d62a17ae | 1868 | |
1869 | /* Extract MAC mobility sequence number, if any. */ | |
7171949d PG |
1870 | local_attr.mm_seqnum = |
1871 | bgp_attr_mac_mobility_seqnum(&local_attr, &sticky); | |
1872 | local_attr.sticky = sticky; | |
1873 | ||
1874 | /* Add (or update) attribute to hash. */ | |
1875 | attr_new = bgp_attr_intern(&local_attr); | |
d62a17ae | 1876 | |
1877 | /* Create new route with its attribute. */ | |
40381db7 | 1878 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1879 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1880 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1881 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1882 | |
1883 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1884 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1885 | |
1886 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1887 | * Only attach second label if we are advertising two labels for | |
1888 | * type-2 routes. | |
1889 | */ | |
996c9314 LB |
1890 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1891 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1892 | vni_t l3vni; |
1893 | ||
1894 | l3vni = bgpevpn_get_l3vni(vpn); | |
1895 | if (l3vni) { | |
1896 | vni2label(l3vni, &label[1]); | |
1897 | num_labels++; | |
1898 | } | |
1899 | } | |
d62a17ae | 1900 | |
40381db7 DS |
1901 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1902 | tmp_pi->extra->num_labels = num_labels; | |
34c7f35f | 1903 | |
852d9f97 SW |
1904 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1905 | if (mac) | |
1906 | evpn_type2_path_info_set_mac(tmp_pi, *mac); | |
1907 | else if (ip) | |
1908 | evpn_type2_path_info_set_ip(tmp_pi, *ip); | |
1909 | } | |
34c7f35f | 1910 | |
0ca10580 CS |
1911 | /* Mark route as self type-2 route */ |
1912 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1913 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1914 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1915 | } else { |
40381db7 DS |
1916 | tmp_pi = local_pi; |
1917 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1918 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1919 | route_change = 0; |
1920 | else { | |
c48d9f5f MK |
1921 | /* |
1922 | * The attributes have changed, type-2 routes needs to | |
1923 | * be advertised with right labels. | |
1924 | */ | |
1925 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1926 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1927 | && CHECK_FLAG(vpn->flags, | |
1928 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1929 | vni_t l3vni; |
1930 | ||
1931 | l3vni = bgpevpn_get_l3vni(vpn); | |
1932 | if (l3vni) { | |
1933 | vni2label(l3vni, &label[1]); | |
1934 | num_labels++; | |
1935 | } | |
1936 | } | |
40381db7 DS |
1937 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1938 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1939 | |
852d9f97 SW |
1940 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1941 | if (mac) | |
1942 | evpn_type2_path_info_set_mac(tmp_pi, | |
1943 | *mac); | |
1944 | else if (ip) | |
1945 | evpn_type2_path_info_set_ip(tmp_pi, | |
1946 | *ip); | |
1947 | } | |
34c7f35f | 1948 | |
d62a17ae | 1949 | /* The attribute has changed. */ |
1950 | /* Add (or update) attribute to hash. */ | |
7171949d | 1951 | local_attr = *attr; |
9bcb3eef | 1952 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1953 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1954 | |
f07e1c99 | 1955 | /* Extract MAC mobility sequence number, if any. */ |
7171949d PG |
1956 | local_attr.mm_seqnum = bgp_attr_mac_mobility_seqnum( |
1957 | &local_attr, &sticky); | |
1958 | local_attr.sticky = sticky; | |
1959 | ||
1960 | attr_new = bgp_attr_intern(&local_attr); | |
f07e1c99 | 1961 | |
d62a17ae | 1962 | /* Restore route, if needed. */ |
40381db7 | 1963 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1964 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1965 | |
1966 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1967 | bgp_attr_unintern(&tmp_pi->attr); |
1968 | tmp_pi->attr = attr_new; | |
083ec940 | 1969 | tmp_pi->uptime = monotime(NULL); |
d62a17ae | 1970 | } |
1971 | } | |
1972 | ||
58bff4d1 AK |
1973 | /* local MAC-IP routes in the VNI table are linked to |
1974 | * the destination ES | |
26c03e43 AK |
1975 | */ |
1976 | if (route_change && vpn_rt | |
1977 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1978 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1979 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1980 | ||
d62a17ae | 1981 | /* Return back the route entry. */ |
40381db7 | 1982 | *pi = tmp_pi; |
d62a17ae | 1983 | return route_change; |
128ea8ab | 1984 | } |
1985 | ||
ec0ab544 | 1986 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1987 | struct bgpevpn *vpn, |
1988 | struct bgp_dest *dest) | |
ec0ab544 AK |
1989 | { |
1990 | struct bgp_path_info *tmp_ri; | |
1991 | struct bgp_path_info *curr_select = NULL; | |
1992 | ||
9bcb3eef DS |
1993 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1994 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1995 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1996 | curr_select = tmp_ri; | |
1997 | break; | |
1998 | } | |
1999 | } | |
2000 | ||
2001 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
2002 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
2003 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
2004 | evpn_zebra_install(bgp, vpn, | |
2005 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
2006 | curr_select); | |
ec0ab544 AK |
2007 | } |
2008 | ||
6d8c603a AK |
2009 | /* |
2010 | * If the local route was not selected evict it and tell zebra to re-add | |
2011 | * the best remote dest. | |
2012 | * | |
2013 | * Typically a local path added by zebra is expected to be selected as | |
2014 | * best. In which case when a remote path wins as best (later) | |
2015 | * evpn_route_select_install itself evicts the older-local-best path. | |
2016 | * | |
2017 | * However if bgp's add and zebra's add cross paths (race condition) it | |
2018 | * is possible that the local path is no longer the "older" best path. | |
2019 | * It is a path that was never designated as best and hence requires | |
2020 | * additional handling to prevent bgp from injecting and holding on to a | |
2021 | * non-best local path. | |
2022 | */ | |
2023 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
2024 | struct bgpevpn *vpn, | |
9bcb3eef | 2025 | struct bgp_dest *dest, |
9a8897aa | 2026 | struct bgp_path_info *local_pi) |
6d8c603a | 2027 | { |
6d8c603a | 2028 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 2029 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 2030 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 2031 | dest); |
b54892e0 | 2032 | |
9c7edc03 | 2033 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 2034 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
2035 | |
2036 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 2037 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
2038 | } |
2039 | ||
70524092 AK |
2040 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
2041 | const struct prefix_evpn *p, | |
2042 | esi_t *esi) | |
2043 | { | |
2044 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2045 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
2046 | || (is_evpn_prefix_ipaddr_v6(p) |
2047 | && !IN6_IS_ADDR_LINKLOCAL( | |
2048 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
2049 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
2050 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
2051 | } | |
2052 | ||
128ea8ab | 2053 | /* |
2054 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
2055 | * and schedule for processing. | |
2056 | */ | |
d62a17ae | 2057 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 2058 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 2059 | uint32_t seq, esi_t *esi) |
128ea8ab | 2060 | { |
9bcb3eef | 2061 | struct bgp_dest *dest; |
d62a17ae | 2062 | struct attr attr; |
2063 | struct attr *attr_new; | |
1ec31309 | 2064 | int add_l3_ecomm = 0; |
40381db7 | 2065 | struct bgp_path_info *pi; |
d62a17ae | 2066 | afi_t afi = AFI_L2VPN; |
2067 | safi_t safi = SAFI_EVPN; | |
2068 | int route_change; | |
9c7edc03 | 2069 | bool old_is_sync = false; |
852d9f97 | 2070 | bool mac_only = false; |
128ea8ab | 2071 | |
6006b807 | 2072 | memset(&attr, 0, sizeof(attr)); |
128ea8ab | 2073 | |
d62a17ae | 2074 | /* Build path-attribute for this route. */ |
0f05ea43 | 2075 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
d62a17ae | 2076 | attr.nexthop = vpn->originator_ip; |
2077 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2078 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 2079 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 2080 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
2081 | attr.router_flag = CHECK_FLAG(flags, |
2082 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
2083 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
2084 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
2085 | ||
2086 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 2087 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
2088 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
2089 | } | |
2090 | ||
be41eb68 | 2091 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 2092 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 2093 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 2094 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 2095 | } |
be41eb68 | 2096 | |
2304139a | 2097 | /* router mac is only needed for type-2 routes here. */ |
2098 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
2099 | uint8_t af_flags = 0; | |
2100 | ||
2101 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
2102 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
2103 | ||
2104 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
2105 | } | |
2106 | ||
9c7edc03 | 2107 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
2108 | char buf3[ESI_STR_LEN]; |
2109 | ||
23d0a753 | 2110 | zlog_debug( |
47f5eb74 | 2111 | "VRF %s vni %u type-%u route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 | 2112 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
47f5eb74 | 2113 | : "None", |
2114 | vpn->vni, p->prefix.route_type, p, &attr.rmac, | |
2115 | &attr.mp_nexthop_global_in, | |
23d0a753 | 2116 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 2117 | } |
0ca10580 | 2118 | |
a21bd7a3 | 2119 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 2120 | |
1ec31309 | 2121 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
2122 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
2123 | * these routes. | |
2124 | */ | |
70524092 AK |
2125 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2126 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 2127 | |
2128 | /* Set up extended community. */ | |
2129 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 2130 | |
852d9f97 SW |
2131 | /* First, create (or fetch) route node within the VNI. |
2132 | * NOTE: There is no RD here. | |
2133 | */ | |
2134 | dest = bgp_evpn_vni_node_get(vpn, p, NULL); | |
2135 | ||
2136 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
2137 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
2138 | mac_only = true; | |
128ea8ab | 2139 | |
d62a17ae | 2140 | /* Create or update route entry. */ |
34c7f35f | 2141 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2142 | bgp, vpn, afi, safi, dest, &attr, |
2143 | (mac_only ? NULL : &p->prefix.macip_addr.mac), NULL /* ip */, 1, | |
34c7f35f | 2144 | &pi, flags, seq, true /* setup_sync */, &old_is_sync); |
40381db7 DS |
2145 | assert(pi); |
2146 | attr_new = pi->attr; | |
128ea8ab | 2147 | |
6d8c603a AK |
2148 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2149 | bgp_path_info_lock(pi); | |
7ab604ab CS |
2150 | |
2151 | /* Perform route selection. Normally, the local route in the | |
2152 | * VNI is expected to win and be the best route. However, if | |
2153 | * there is a race condition where a host moved from local to | |
2154 | * remote and the remote route was received in BGP just prior | |
2155 | * to the local MACIP notification from zebra, the remote | |
2156 | * route would win, and we should evict the defunct local route | |
2157 | * and (re)install the remote route into zebra. | |
2158 | */ | |
9bcb3eef | 2159 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 2160 | /* |
9a8897aa AK |
2161 | * If the new local route was not selected evict it and tell zebra |
2162 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
2163 | * routes. | |
6d8c603a | 2164 | */ |
9c7edc03 | 2165 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 2166 | route_change = 0; |
9c7edc03 AK |
2167 | } else { |
2168 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2169 | route_change = 0; | |
2170 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
2171 | } else { | |
2172 | bool new_is_sync; | |
2173 | ||
2174 | /* If the local path already existed and is still the | |
2175 | * best path we need to also check if it transitioned | |
2176 | * from being a sync path to a non-sync path. If it | |
2177 | * it did we need to notify zebra that the sync-path | |
2178 | * has been removed. | |
2179 | */ | |
2180 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2181 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2182 | evpn_zebra_uninstall(bgp, vpn, p, pi, true); |
9c7edc03 | 2183 | } |
9a8897aa | 2184 | } |
6d8c603a AK |
2185 | bgp_path_info_unlock(pi); |
2186 | ||
9bcb3eef | 2187 | bgp_dest_unlock_node(dest); |
128ea8ab | 2188 | |
d62a17ae | 2189 | /* If this is a new route or some attribute has changed, export the |
2190 | * route to the global table. The route will be advertised to peers | |
2191 | * from there. Note that this table is a 2-level tree (RD-level + | |
2192 | * Prefix-level) similar to L3VPN routes. | |
2193 | */ | |
2194 | if (route_change) { | |
40381db7 | 2195 | struct bgp_path_info *global_pi; |
128ea8ab | 2196 | |
34c7f35f SW |
2197 | dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, |
2198 | p, &vpn->prd, NULL); | |
852d9f97 SW |
2199 | update_evpn_route_entry( |
2200 | bgp, vpn, afi, safi, dest, attr_new, NULL /* mac */, | |
2201 | NULL /* ip */, 1, &global_pi, flags, seq, | |
2202 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 2203 | |
d62a17ae | 2204 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
2205 | bgp_process(bgp, dest, afi, safi); |
2206 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2207 | } |
128ea8ab | 2208 | |
d62a17ae | 2209 | /* Unintern temporary. */ |
2210 | aspath_unintern(&attr.aspath); | |
128ea8ab | 2211 | |
d62a17ae | 2212 | return 0; |
128ea8ab | 2213 | } |
2214 | ||
50f74cf1 | 2215 | /* |
2216 | * Delete EVPN route entry. | |
2217 | * The entry can be in ESI/VNI table or the global table. | |
2218 | */ | |
185fb14a | 2219 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 2220 | struct bgp_dest *dest, |
40381db7 | 2221 | struct bgp_path_info **pi) |
342dd0c6 | 2222 | { |
40381db7 | 2223 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 2224 | |
40381db7 | 2225 | *pi = NULL; |
342dd0c6 | 2226 | |
50f74cf1 | 2227 | /* Now, find matching route. */ |
9bcb3eef | 2228 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 2229 | tmp_pi = tmp_pi->next) |
40381db7 DS |
2230 | if (tmp_pi->peer == bgp->peer_self |
2231 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2232 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 2233 | break; |
2234 | ||
40381db7 | 2235 | *pi = tmp_pi; |
342dd0c6 | 2236 | |
2237 | /* Mark route for delete. */ | |
40381db7 | 2238 | if (tmp_pi) |
9bcb3eef | 2239 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 2240 | } |
2241 | ||
2242 | /* Delete EVPN type5 route */ | |
996c9314 | 2243 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2244 | { |
2245 | afi_t afi = AFI_L2VPN; | |
2246 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 2247 | struct bgp_dest *dest = NULL; |
40381db7 | 2248 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2249 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2250 | |
5e53dce3 T |
2251 | bgp_evpn = bgp_get_evpn(); |
2252 | if (!bgp_evpn) | |
faafdfa8 | 2253 | return 0; |
342dd0c6 | 2254 | |
2255 | /* locate the global route entry for this type-5 prefix */ | |
0da34e49 DA |
2256 | dest = bgp_evpn_global_node_lookup(bgp_evpn->rib[afi][safi], safi, evp, |
2257 | &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 2258 | if (!dest) |
342dd0c6 | 2259 | return 0; |
2260 | ||
9bcb3eef | 2261 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 2262 | if (pi) |
9bcb3eef DS |
2263 | bgp_process(bgp_evpn, dest, afi, safi); |
2264 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 2265 | return 0; |
2266 | } | |
2267 | ||
128ea8ab | 2268 | /* |
2269 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2270 | * schedule for processing. | |
2271 | */ | |
d62a17ae | 2272 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2273 | struct prefix_evpn *p) | |
2274 | { | |
9bcb3eef | 2275 | struct bgp_dest *dest, *global_dest; |
40381db7 | 2276 | struct bgp_path_info *pi; |
d62a17ae | 2277 | afi_t afi = AFI_L2VPN; |
2278 | safi_t safi = SAFI_EVPN; | |
2279 | ||
2280 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2281 | * there | |
2282 | * is nothing further to do. | |
852d9f97 | 2283 | * NOTE: There is no RD here. |
d62a17ae | 2284 | */ |
852d9f97 | 2285 | dest = bgp_evpn_vni_node_lookup(vpn, p, NULL); |
9bcb3eef | 2286 | if (!dest) |
d62a17ae | 2287 | return 0; |
2288 | ||
2289 | /* Next, locate route node in the global EVPN routing table. Note that | |
2290 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2291 | * L3VPN routes. | |
2292 | */ | |
0da34e49 DA |
2293 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], safi, p, |
2294 | &vpn->prd, NULL); | |
9bcb3eef | 2295 | if (global_dest) { |
d62a17ae | 2296 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 2297 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 2298 | |
2299 | /* Schedule for processing - withdraws to peers happen from | |
2300 | * this table. | |
2301 | */ | |
40381db7 | 2302 | if (pi) |
9bcb3eef DS |
2303 | bgp_process(bgp, global_dest, afi, safi); |
2304 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 2305 | } |
2306 | ||
2307 | /* Delete route entry in the VNI route table. This can just be removed. | |
2308 | */ | |
9bcb3eef | 2309 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 2310 | if (pi) { |
9bcb3eef DS |
2311 | bgp_path_info_reap(dest, pi); |
2312 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 2313 | } |
9bcb3eef | 2314 | bgp_dest_unlock_node(dest); |
d62a17ae | 2315 | |
2316 | return 0; | |
128ea8ab | 2317 | } |
2318 | ||
70524092 AK |
2319 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2320 | struct bgp_dest *dest, | |
2321 | struct bgp_path_info *local_pi, | |
2322 | const char *caller) | |
9c7edc03 AK |
2323 | { |
2324 | afi_t afi = AFI_L2VPN; | |
2325 | safi_t safi = SAFI_EVPN; | |
2326 | struct bgp_path_info *pi; | |
2327 | struct attr attr; | |
2328 | struct attr *attr_new; | |
2329 | uint32_t seq; | |
2330 | int add_l3_ecomm = 0; | |
09319b4e | 2331 | struct bgp_dest *global_dest; |
9c7edc03 | 2332 | struct bgp_path_info *global_pi; |
34c7f35f | 2333 | struct prefix_evpn evp; |
9c7edc03 AK |
2334 | int route_change; |
2335 | bool old_is_sync = false; | |
2336 | ||
2337 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
2338 | return; | |
2339 | ||
34c7f35f SW |
2340 | /* |
2341 | * VNI table MAC-IP prefixes don't have MAC so make sure it's set from | |
2342 | * path info here. | |
2343 | */ | |
852d9f97 SW |
2344 | if (is_evpn_prefix_ipaddr_none((struct prefix_evpn *)&dest->p)) { |
2345 | /* VNI MAC -> Global */ | |
2346 | evpn_type2_prefix_global_copy( | |
2347 | &evp, (struct prefix_evpn *)&dest->p, NULL /* mac */, | |
2348 | evpn_type2_path_info_get_ip(local_pi)); | |
2349 | } else { | |
2350 | /* VNI IP -> Global */ | |
2351 | evpn_type2_prefix_global_copy( | |
2352 | &evp, (struct prefix_evpn *)&dest->p, | |
2353 | evpn_type2_path_info_get_mac(local_pi), NULL /* ip */); | |
2354 | } | |
34c7f35f | 2355 | |
9c7edc03 AK |
2356 | /* |
2357 | * Build attribute per local route as the MAC mobility and | |
2358 | * some other values could differ for different routes. The | |
2359 | * attributes will be shared in the hash table. | |
2360 | */ | |
0f05ea43 | 2361 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
9c7edc03 AK |
2362 | attr.nexthop = vpn->originator_ip; |
2363 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2364 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2365 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2366 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2367 | attr.es_flags = local_pi->attr->es_flags; | |
2368 | if (local_pi->attr->default_gw) { | |
2369 | attr.default_gw = 1; | |
34c7f35f | 2370 | if (is_evpn_prefix_ipaddr_v6(&evp)) |
9c7edc03 AK |
2371 | attr.router_flag = 1; |
2372 | } | |
2373 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
34c7f35f | 2374 | bgp_evpn_get_rmac_nexthop(vpn, &evp, &attr, local_pi->extra->af_flags); |
9c7edc03 AK |
2375 | vni2label(vpn->vni, &(attr.label)); |
2376 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2377 | * using L3 VNI for type-2 routes also. | |
2378 | */ | |
70524092 | 2379 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
34c7f35f | 2380 | vpn, &evp, |
70524092 | 2381 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); |
9c7edc03 AK |
2382 | |
2383 | /* Set up extended community. */ | |
2384 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2385 | seq = mac_mobility_seqnum(local_pi->attr); | |
2386 | ||
2387 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2388 | char buf3[ESI_STR_LEN]; |
2389 | ||
23d0a753 | 2390 | zlog_debug( |
c0d72166 | 2391 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2392 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2393 | : " ", | |
34c7f35f | 2394 | vpn->vni, &evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2395 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2396 | attr.es_flags, caller); | |
9c7edc03 AK |
2397 | } |
2398 | ||
2399 | /* Update the route entry. */ | |
09319b4e | 2400 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2401 | bgp, vpn, afi, safi, dest, &attr, NULL /* mac */, NULL /* ip */, |
2402 | 0, &pi, 0, seq, true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2403 | |
2404 | assert(pi); | |
2405 | attr_new = pi->attr; | |
2406 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2407 | bgp_path_info_lock(pi); | |
2408 | ||
2409 | /* Perform route selection. Normally, the local route in the | |
2410 | * VNI is expected to win and be the best route. However, | |
2411 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2412 | * that causes best selection to be based on next hop), a | |
2413 | * remote route could win. If the local route is the best, | |
2414 | * ensure it is updated in the global EVPN route table and | |
2415 | * advertised to peers; otherwise, ensure it is evicted and | |
2416 | * (re)install the remote route into zebra. | |
2417 | */ | |
09319b4e | 2418 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2419 | |
2420 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2421 | route_change = 0; | |
2422 | } else { | |
2423 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2424 | route_change = 0; | |
09319b4e | 2425 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2426 | } else { |
2427 | bool new_is_sync; | |
2428 | ||
2429 | /* If the local path already existed and is still the | |
2430 | * best path we need to also check if it transitioned | |
2431 | * from being a sync path to a non-sync path. If it | |
2432 | * it did we need to notify zebra that the sync-path | |
2433 | * has been removed. | |
2434 | */ | |
2435 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2436 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2437 | evpn_zebra_uninstall(bgp, vpn, &evp, pi, true); |
9c7edc03 AK |
2438 | } |
2439 | } | |
2440 | ||
2441 | ||
2442 | /* unlock pi */ | |
2443 | bgp_path_info_unlock(pi); | |
2444 | ||
2445 | if (route_change) { | |
2446 | /* Update route in global routing table. */ | |
34c7f35f SW |
2447 | global_dest = bgp_evpn_global_node_get( |
2448 | bgp->rib[afi][safi], afi, safi, &evp, &vpn->prd, NULL); | |
09319b4e DS |
2449 | assert(global_dest); |
2450 | update_evpn_route_entry( | |
852d9f97 SW |
2451 | bgp, vpn, afi, safi, global_dest, attr_new, |
2452 | NULL /* mac */, NULL /* ip */, 0, &global_pi, 0, | |
2453 | mac_mobility_seqnum(attr_new), false /* setup_sync */, | |
2454 | NULL /* old_is_sync */); | |
9c7edc03 AK |
2455 | |
2456 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2457 | bgp_process(bgp, global_dest, afi, safi); |
2458 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2459 | } |
2460 | ||
2461 | /* Unintern temporary. */ | |
2462 | aspath_unintern(&attr.aspath); | |
2463 | } | |
2464 | ||
852d9f97 SW |
2465 | static void update_type2_route(struct bgp *bgp, struct bgpevpn *vpn, |
2466 | struct bgp_dest *dest) | |
2467 | { | |
2468 | struct bgp_path_info *tmp_pi; | |
2469 | ||
2470 | const struct prefix_evpn *evp = | |
2471 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2472 | ||
2473 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2474 | return; | |
2475 | ||
2476 | /* Identify local route. */ | |
2477 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; | |
2478 | tmp_pi = tmp_pi->next) { | |
2479 | if (tmp_pi->peer == bgp->peer_self && | |
2480 | tmp_pi->type == ZEBRA_ROUTE_BGP && | |
2481 | tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
2482 | break; | |
2483 | } | |
2484 | ||
2485 | if (!tmp_pi) | |
2486 | return; | |
2487 | ||
2488 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, __func__); | |
2489 | } | |
2490 | ||
128ea8ab | 2491 | /* |
2492 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2493 | * be scheduled for advertise to peers. | |
2494 | */ | |
852d9f97 | 2495 | static void update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 2496 | { |
9bcb3eef | 2497 | struct bgp_dest *dest; |
d62a17ae | 2498 | |
852d9f97 SW |
2499 | /* Walk this VNI's route MAC & IP table and update local type-2 |
2500 | * routes. For any routes updated, update corresponding entry in the | |
2501 | * global table too. | |
d62a17ae | 2502 | */ |
852d9f97 SW |
2503 | for (dest = bgp_table_top(vpn->mac_table); dest; |
2504 | dest = bgp_route_next(dest)) | |
2505 | update_type2_route(bgp, vpn, dest); | |
d62a17ae | 2506 | |
852d9f97 SW |
2507 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2508 | dest = bgp_route_next(dest)) | |
2509 | update_type2_route(bgp, vpn, dest); | |
128ea8ab | 2510 | } |
2511 | ||
2512 | /* | |
2513 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2514 | * global routing table. These are also scheduled for withdraw from peers. | |
2515 | */ | |
17151ae9 | 2516 | static void delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2517 | { |
d62a17ae | 2518 | afi_t afi; |
2519 | safi_t safi; | |
9bcb3eef | 2520 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2521 | struct bgp_table *table; |
40381db7 | 2522 | struct bgp_path_info *pi; |
128ea8ab | 2523 | |
d62a17ae | 2524 | afi = AFI_L2VPN; |
2525 | safi = SAFI_EVPN; | |
128ea8ab | 2526 | |
9bcb3eef DS |
2527 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2528 | (struct prefix *)&vpn->prd); | |
17151ae9 | 2529 | if (rddest) { |
9bcb3eef DS |
2530 | table = bgp_dest_get_bgp_table_info(rddest); |
2531 | for (dest = bgp_table_top(table); dest; | |
2532 | dest = bgp_route_next(dest)) { | |
2533 | const struct prefix_evpn *evp = | |
2534 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2535 | dest); | |
128ea8ab | 2536 | |
d62a17ae | 2537 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2538 | continue; | |
128ea8ab | 2539 | |
9bcb3eef | 2540 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2541 | if (pi) |
9bcb3eef | 2542 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2543 | } |
128ea8ab | 2544 | |
17151ae9 | 2545 | /* Unlock RD node. */ |
9bcb3eef | 2546 | bgp_dest_unlock_node(rddest); |
17151ae9 | 2547 | } |
128ea8ab | 2548 | } |
2549 | ||
852d9f97 SW |
2550 | static void delete_vni_type2_route(struct bgp *bgp, struct bgp_dest *dest) |
2551 | { | |
2552 | struct bgp_path_info *pi; | |
2553 | afi_t afi = AFI_L2VPN; | |
2554 | safi_t safi = SAFI_EVPN; | |
2555 | ||
2556 | const struct prefix_evpn *evp = | |
2557 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2558 | ||
2559 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2560 | return; | |
2561 | ||
2562 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); | |
2563 | ||
2564 | /* Route entry in local table gets deleted immediately. */ | |
2565 | if (pi) | |
2566 | bgp_path_info_reap(dest, pi); | |
2567 | } | |
2568 | ||
2569 | static void delete_vni_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
2570 | { | |
2571 | struct bgp_dest *dest; | |
2572 | ||
2573 | /* Next, walk this VNI's MAC & IP route table and delete local type-2 | |
2574 | * routes. | |
2575 | */ | |
2576 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
2577 | dest = bgp_route_next(dest)) | |
2578 | delete_vni_type2_route(bgp, dest); | |
2579 | ||
2580 | for (dest = bgp_table_top(vpn->ip_table); dest; | |
2581 | dest = bgp_route_next(dest)) | |
2582 | delete_vni_type2_route(bgp, dest); | |
2583 | } | |
2584 | ||
128ea8ab | 2585 | /* |
2586 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2587 | * table as well as the per-VNI route table. | |
2588 | */ | |
852d9f97 | 2589 | static void delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2590 | { |
d62a17ae | 2591 | /* First, walk the global route table for this VNI's type-2 local |
2592 | * routes. | |
2593 | * EVPN routes are a 2-level table, first get the RD table. | |
2594 | */ | |
2595 | delete_global_type2_routes(bgp, vpn); | |
852d9f97 | 2596 | delete_vni_type2_routes(bgp, vpn); |
128ea8ab | 2597 | } |
2598 | ||
2599 | /* | |
2600 | * Delete all routes in the per-VNI route table. | |
2601 | */ | |
852d9f97 | 2602 | static void delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2603 | { |
9bcb3eef | 2604 | struct bgp_dest *dest; |
40381db7 | 2605 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2606 | |
852d9f97 SW |
2607 | /* Walk this VNI's MAC & IP route table and delete all routes. */ |
2608 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
9bcb3eef DS |
2609 | dest = bgp_route_next(dest)) { |
2610 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2611 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2612 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2613 | bgp_path_info_delete(dest, pi); |
2614 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2615 | } |
2616 | } | |
128ea8ab | 2617 | |
852d9f97 SW |
2618 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2619 | dest = bgp_route_next(dest)) { | |
2620 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
2621 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
2622 | bgp_path_info_delete(dest, pi); | |
2623 | bgp_path_info_reap(dest, pi); | |
2624 | } | |
2625 | } | |
128ea8ab | 2626 | } |
2627 | ||
833b8a50 AK |
2628 | /* BUM traffic flood mode per-l2-vni */ |
2629 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2630 | struct bgpevpn *vpn) | |
2631 | { | |
2632 | /* if flooding has been globally disabled per-vni mode is | |
2633 | * not relevant | |
2634 | */ | |
2635 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2636 | return VXLAN_FLOOD_DISABLED; | |
2637 | ||
2638 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2639 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2640 | return VXLAN_FLOOD_PIM_SM; | |
2641 | ||
2642 | /* default is ingress replication */ | |
2643 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2644 | } | |
2645 | ||
128ea8ab | 2646 | /* |
2647 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2648 | * export RT getting modified or change to tunnel IP. Note that these | |
2649 | * situations need the route in the per-VNI table as well as the global | |
2650 | * table to be updated (as attributes change). | |
2651 | */ | |
0ca10580 | 2652 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2653 | { |
d62a17ae | 2654 | int ret; |
2655 | struct prefix_evpn p; | |
128ea8ab | 2656 | |
9c49ac74 AD |
2657 | update_type1_routes_for_evi(bgp, vpn); |
2658 | ||
d62a17ae | 2659 | /* Update and advertise the type-3 route (only one) followed by the |
2660 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2661 | * |
2662 | * RT-3 only if doing head-end replication | |
d62a17ae | 2663 | */ |
833b8a50 AK |
2664 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2665 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2666 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2667 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2668 | if (ret) |
2669 | return ret; | |
2670 | } | |
128ea8ab | 2671 | |
852d9f97 SW |
2672 | update_all_type2_routes(bgp, vpn); |
2673 | return 0; | |
128ea8ab | 2674 | } |
2675 | ||
2676 | /* | |
2677 | * Delete (and withdraw) local routes for specified VNI from the global | |
2678 | * table and per-VNI table. After this, remove all other routes from | |
2679 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2680 | * (advertise-all-vni) being disabled. | |
2681 | */ | |
d62a17ae | 2682 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2683 | { |
d62a17ae | 2684 | int ret; |
2685 | struct prefix_evpn p; | |
128ea8ab | 2686 | |
d62a17ae | 2687 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2688 | * followed by type-3 routes (only one) - for this VNI. | |
2689 | */ | |
852d9f97 | 2690 | delete_all_type2_routes(bgp, vpn); |
128ea8ab | 2691 | |
d62a17ae | 2692 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2693 | ret = delete_evpn_route(bgp, vpn, &p); | |
2694 | if (ret) | |
2695 | return ret; | |
128ea8ab | 2696 | |
d62a17ae | 2697 | /* Delete all routes from the per-VNI table. */ |
852d9f97 SW |
2698 | delete_all_vni_routes(bgp, vpn); |
2699 | return 0; | |
128ea8ab | 2700 | } |
2701 | ||
76d07c7a AK |
2702 | /* |
2703 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2704 | * remove the type-3 route if any. A new type-3 route will be generated | |
2705 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2706 | */ | |
2707 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2708 | struct in_addr mcast_grp) | |
2709 | { | |
2710 | struct prefix_evpn p; | |
2711 | ||
2712 | vpn->mcast_grp = mcast_grp; | |
2713 | ||
2714 | if (is_vni_live(vpn)) { | |
2715 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2716 | delete_evpn_route(bgp, vpn, &p); | |
2717 | } | |
2718 | ||
2719 | return 0; | |
2720 | } | |
2721 | ||
128ea8ab | 2722 | /* |
d1911c26 | 2723 | * There is a tunnel endpoint IP address change for this VNI, delete |
2724 | * prior type-3 route (if needed) and update. | |
2725 | * Note: Route re-advertisement happens elsewhere after other processing | |
2726 | * other changes. | |
128ea8ab | 2727 | */ |
4dabdde3 TA |
2728 | static void handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2729 | struct in_addr originator_ip) | |
128ea8ab | 2730 | { |
d62a17ae | 2731 | struct prefix_evpn p; |
128ea8ab | 2732 | |
4dabdde3 TA |
2733 | if (IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) |
2734 | return; | |
2735 | ||
ddd16ed5 MK |
2736 | /* If VNI is not live, we only need to update the originator ip */ |
2737 | if (!is_vni_live(vpn)) { | |
2738 | vpn->originator_ip = originator_ip; | |
4dabdde3 | 2739 | return; |
ddd16ed5 MK |
2740 | } |
2741 | ||
db0e1937 MK |
2742 | /* Update the tunnel-ip hash */ |
2743 | bgp_tip_del(bgp, &vpn->originator_ip); | |
826c3f6d TA |
2744 | if (bgp_tip_add(bgp, &originator_ip)) |
2745 | /* The originator_ip was not already present in the | |
2746 | * bgp martian next-hop table as a tunnel-ip, so we | |
2747 | * need to go back and filter routes matching the new | |
2748 | * martian next-hop. | |
2749 | */ | |
2750 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
db0e1937 | 2751 | |
d62a17ae | 2752 | /* Need to withdraw type-3 route as the originator IP is part |
2753 | * of the key. | |
2754 | */ | |
2755 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2756 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2757 | |
d62a17ae | 2758 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2759 | vpn->originator_ip = originator_ip; | |
4dabdde3 | 2760 | return; |
185fb14a | 2761 | } |
50f74cf1 | 2762 | |
185fb14a AK |
2763 | static struct bgp_path_info * |
2764 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2765 | struct bgp_dest *dest, struct attr *attr) | |
2766 | { | |
2767 | struct attr *attr_new; | |
2768 | struct bgp_path_info *pi; | |
50f74cf1 | 2769 | |
185fb14a AK |
2770 | /* Add (or update) attribute to hash. */ |
2771 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2772 | |
185fb14a AK |
2773 | /* Create new route with its attribute. */ |
2774 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2775 | attr_new, dest); | |
2776 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2777 | bgp_path_info_extra_get(pi); | |
2778 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2779 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2780 | if (parent_pi->extra) { | |
2781 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2782 | sizeof(pi->extra->label)); | |
2783 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2784 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2785 | } |
34c7f35f | 2786 | |
185fb14a | 2787 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2788 | |
185fb14a | 2789 | return pi; |
50f74cf1 | 2790 | } |
2791 | ||
d3135ba3 | 2792 | /* |
2793 | * Install route entry into the VRF routing table and invoke route selection. | |
2794 | */ | |
2795 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2796 | const struct prefix_evpn *evp, |
40381db7 | 2797 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2798 | { |
9bcb3eef | 2799 | struct bgp_dest *dest; |
40381db7 | 2800 | struct bgp_path_info *pi; |
1ec31309 | 2801 | struct attr attr; |
d3135ba3 | 2802 | struct attr *attr_new; |
c4edf708 | 2803 | int ret = 0; |
d3135ba3 | 2804 | struct prefix p; |
2805 | struct prefix *pp = &p; | |
2806 | afi_t afi = 0; | |
2807 | safi_t safi = 0; | |
5f0c5ec8 | 2808 | bool new_pi = false; |
58bff4d1 AK |
2809 | bool use_l3nhg = false; |
2810 | bool is_l3nhg_active = false; | |
a2299aba | 2811 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2812 | |
2813 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2814 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2815 | |
2dbe669b | 2816 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2817 | zlog_debug( |
2dbe669b DA |
2818 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2819 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2820 | parent_pi->flags); | |
1eb88002 | 2821 | |
d3135ba3 | 2822 | /* Create (or fetch) route within the VRF. */ |
2823 | /* NOTE: There is no RD here. */ | |
3714a385 | 2824 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2825 | afi = AFI_IP; |
2826 | safi = SAFI_UNICAST; | |
9bcb3eef | 2827 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2828 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2829 | afi = AFI_IP6; |
2830 | safi = SAFI_UNICAST; | |
9bcb3eef | 2831 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2832 | } else |
2833 | return 0; | |
2834 | ||
1ec31309 | 2835 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2836 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2837 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2838 | * address for the rest of the code to flow through. In the case of IPv4, | |
2839 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2840 | */ |
6f4f49b2 | 2841 | attr = *parent_pi->attr; |
a2299aba AD |
2842 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2843 | if (afi == AFI_IP6) | |
2844 | evpn_convert_nexthop_to_ipv6(&attr); | |
7226bc40 TA |
2845 | else { |
2846 | attr.nexthop = attr.mp_nexthop_global_in; | |
a2299aba | 2847 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
7226bc40 | 2848 | } |
a2299aba AD |
2849 | } else { |
2850 | ||
2851 | /* | |
2852 | * If gateway IP overlay index is specified in the NLRI of | |
2853 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2854 | * for the prefix in the VRF | |
2855 | */ | |
2856 | if (bgp_debug_zebra(NULL)) { | |
2857 | zlog_debug( | |
2858 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2859 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2860 | buf1, sizeof(buf1)), pp, | |
2861 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2862 | } | |
2863 | ||
2864 | if (afi == AFI_IP6) { | |
2865 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2866 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2867 | sizeof(struct in6_addr)); |
2868 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2869 | } else { | |
860e740b | 2870 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2871 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2872 | } | |
2873 | } | |
1ec31309 | 2874 | |
58bff4d1 AK |
2875 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2876 | &is_l3nhg_active, NULL); | |
2877 | if (use_l3nhg) | |
2878 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2879 | if (is_l3nhg_active) | |
2880 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2881 | ||
d3135ba3 | 2882 | /* Check if route entry is already present. */ |
9bcb3eef | 2883 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2884 | if (pi->extra |
2885 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2886 | break; |
2887 | ||
5f0c5ec8 | 2888 | if (!pi) { |
9bcb3eef | 2889 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2890 | new_pi = true; |
2891 | } else { | |
40381db7 DS |
2892 | if (attrhash_cmp(pi->attr, &attr) |
2893 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2894 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2895 | return 0; |
2896 | } | |
2897 | /* The attribute has changed. */ | |
2898 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2899 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2900 | |
2901 | /* Restore route, if needed. */ | |
40381db7 | 2902 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2903 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2904 | |
2905 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2906 | if ((afi == AFI_IP |
2907 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2908 | || (afi == AFI_IP6 | |
2909 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2910 | &attr_new->mp_nexthop_global))) | |
2911 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2912 | |
9bcb3eef | 2913 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2914 | /* Unintern existing, set to new. */ |
40381db7 DS |
2915 | bgp_attr_unintern(&pi->attr); |
2916 | pi->attr = attr_new; | |
083ec940 | 2917 | pi->uptime = monotime(NULL); |
d3135ba3 | 2918 | } |
a2299aba AD |
2919 | |
2920 | /* Gateway IP nexthop should be resolved */ | |
2921 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2922 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2923 | NULL, 0, NULL)) |
a2299aba AD |
2924 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2925 | else { | |
2926 | if (BGP_DEBUG(nht, NHT)) { | |
2927 | inet_ntop(pp->family, | |
2928 | &attr.evpn_overlay.gw_ip, | |
2929 | buf1, sizeof(buf1)); | |
2930 | zlog_debug("%s: gateway IP NH unresolved", | |
2931 | buf1); | |
2932 | } | |
2933 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2934 | } | |
2935 | } else { | |
2936 | ||
2937 | /* as it is an importation, change nexthop */ | |
2938 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2939 | } | |
d3135ba3 | 2940 | |
090efa2f AK |
2941 | /* Link path to evpn nexthop */ |
2942 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2943 | ||
9bcb3eef | 2944 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2945 | safi); |
b49cdf4c | 2946 | |
d3135ba3 | 2947 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2948 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2949 | |
7452e879 | 2950 | /* Process for route leaking. */ |
2951 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2952 | ||
9bcb3eef | 2953 | bgp_dest_unlock_node(dest); |
3c11d70a | 2954 | |
5f0c5ec8 | 2955 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2956 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2957 | new_pi ? "new" : "update", dest, | |
2958 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2959 | pi->flags); | |
5f0c5ec8 | 2960 | |
d3135ba3 | 2961 | return ret; |
2962 | } | |
2963 | ||
128ea8ab | 2964 | /* |
852d9f97 | 2965 | * Common handling for vni route tables install/selection. |
128ea8ab | 2966 | */ |
852d9f97 SW |
2967 | static int install_evpn_route_entry_in_vni_common( |
2968 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
2969 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
d62a17ae | 2970 | { |
40381db7 | 2971 | struct bgp_path_info *pi; |
9c7edc03 | 2972 | struct bgp_path_info *local_pi; |
d62a17ae | 2973 | struct attr *attr_new; |
2974 | int ret; | |
74efb822 AK |
2975 | bool old_local_es = false; |
2976 | bool new_local_es; | |
c44ab6f1 | 2977 | |
d62a17ae | 2978 | /* Check if route entry is already present. */ |
9bcb3eef | 2979 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2980 | if (pi->extra |
2981 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2982 | break; |
2983 | ||
bd0254af MS |
2984 | if (!pi) { |
2985 | /* Create an info */ | |
26c03e43 | 2986 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2987 | parent_pi->attr); |
34c7f35f | 2988 | |
852d9f97 SW |
2989 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2990 | if (is_evpn_type2_dest_ipaddr_none(dest)) | |
2991 | evpn_type2_path_info_set_ip( | |
2992 | pi, p->prefix.macip_addr.ip); | |
2993 | else | |
2994 | evpn_type2_path_info_set_mac( | |
2995 | pi, p->prefix.macip_addr.mac); | |
2996 | } | |
34c7f35f | 2997 | |
74efb822 | 2998 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 2999 | } else { |
b5118501 TA |
3000 | /* Return early if attributes haven't changed |
3001 | * and dest isn't flagged for removal. | |
3002 | * dest will be unlocked by either | |
3003 | * install_evpn_route_entry_in_vni_mac() or | |
3004 | * install_evpn_route_entry_in_vni_ip() | |
3005 | */ | |
3006 | if (attrhash_cmp(pi->attr, parent_pi->attr) && | |
3007 | !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 3008 | return 0; |
d62a17ae | 3009 | /* The attribute has changed. */ |
3010 | /* Add (or update) attribute to hash. */ | |
40381db7 | 3011 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 3012 | |
50f74cf1 | 3013 | /* Restore route, if needed. */ |
40381db7 | 3014 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 3015 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 3016 | |
3017 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
3018 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
3019 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 3020 | |
74efb822 AK |
3021 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
3022 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
3023 | /* If ESI is different or if its type has changed we | |
3024 | * need to reinstall the path in zebra | |
3025 | */ | |
3026 | if ((old_local_es != new_local_es) | |
3027 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
3028 | sizeof(attr_new->esi))) { | |
3029 | ||
3030 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
3031 | zlog_debug("VNI %d path %pFX chg to %s es", | |
3032 | vpn->vni, &pi->net->p, | |
3033 | new_local_es ? "local" | |
3034 | : "non-local"); | |
3035 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
3036 | } | |
3037 | ||
50f74cf1 | 3038 | /* Unintern existing, set to new. */ |
40381db7 DS |
3039 | bgp_attr_unintern(&pi->attr); |
3040 | pi->attr = attr_new; | |
083ec940 | 3041 | pi->uptime = monotime(NULL); |
50f74cf1 | 3042 | } |
3043 | ||
021b6596 AD |
3044 | /* Add this route to remote IP hashtable */ |
3045 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
3046 | ||
50f74cf1 | 3047 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3048 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 3049 | |
9c7edc03 AK |
3050 | /* if the best path is a local path with a non-zero ES |
3051 | * sync info against the local path may need to be updated | |
3052 | * when a remote path is added/updated (including changes | |
3053 | * from sync-path to remote-path) | |
3054 | */ | |
3055 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 3056 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 3057 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 3058 | __func__); |
852d9f97 SW |
3059 | |
3060 | return ret; | |
3061 | } | |
3062 | ||
3063 | /* | |
3064 | * Common handling for vni route tables uninstall/selection. | |
3065 | */ | |
3066 | static int uninstall_evpn_route_entry_in_vni_common( | |
3067 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
3068 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
3069 | { | |
3070 | struct bgp_path_info *pi; | |
3071 | struct bgp_path_info *local_pi; | |
3072 | int ret; | |
3073 | ||
3074 | /* Find matching route entry. */ | |
3075 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
3076 | if (pi->extra && | |
3077 | (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
3078 | break; | |
3079 | ||
3080 | if (!pi) | |
3081 | return 0; | |
3082 | ||
3083 | bgp_evpn_remote_ip_hash_del(vpn, pi); | |
3084 | ||
3085 | /* Mark entry for deletion */ | |
3086 | bgp_path_info_delete(dest, pi); | |
3087 | ||
3088 | /* Perform route selection and update zebra, if required. */ | |
3089 | ret = evpn_route_select_install(bgp, vpn, dest); | |
3090 | ||
3091 | /* if the best path is a local path with a non-zero ES | |
3092 | * sync info against the local path may need to be updated | |
3093 | * when a remote path is deleted | |
3094 | */ | |
3095 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
3096 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
3097 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
3098 | __func__); | |
3099 | ||
3100 | return ret; | |
3101 | } | |
3102 | ||
3103 | /* | |
3104 | * Install route entry into VNI IP table and invoke route selection. | |
3105 | */ | |
3106 | static int install_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3107 | struct bgpevpn *vpn, | |
3108 | const struct prefix_evpn *p, | |
3109 | struct bgp_path_info *parent_pi) | |
3110 | { | |
3111 | int ret; | |
3112 | struct bgp_dest *dest; | |
3113 | ||
3114 | /* Ignore MAC Only Type-2 */ | |
3115 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3116 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3117 | return 0; | |
3118 | ||
3119 | /* Create (or fetch) route within the VNI IP table. */ | |
3120 | dest = bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
3121 | ||
3122 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3123 | parent_pi); | |
3124 | ||
3125 | bgp_dest_unlock_node(dest); | |
3126 | ||
3127 | return ret; | |
3128 | } | |
3129 | ||
3130 | /* | |
3131 | * Install route entry into VNI MAC table and invoke route selection. | |
3132 | */ | |
3133 | static int install_evpn_route_entry_in_vni_mac(struct bgp *bgp, | |
3134 | struct bgpevpn *vpn, | |
3135 | const struct prefix_evpn *p, | |
3136 | struct bgp_path_info *parent_pi) | |
3137 | { | |
3138 | int ret; | |
3139 | struct bgp_dest *dest; | |
3140 | ||
3141 | /* Only type-2 routes go into this table */ | |
3142 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3143 | return 0; | |
3144 | ||
3145 | /* Create (or fetch) route within the VNI MAC table. */ | |
3146 | dest = bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
3147 | ||
3148 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3149 | parent_pi); | |
3150 | ||
3151 | bgp_dest_unlock_node(dest); | |
3152 | ||
3153 | return ret; | |
3154 | } | |
3155 | ||
3156 | /* | |
3157 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3158 | */ | |
3159 | static int uninstall_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3160 | struct bgpevpn *vpn, | |
3161 | const struct prefix_evpn *p, | |
3162 | struct bgp_path_info *parent_pi) | |
3163 | { | |
3164 | int ret; | |
3165 | struct bgp_dest *dest; | |
3166 | ||
3167 | /* Ignore MAC Only Type-2 */ | |
3168 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3169 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3170 | return 0; | |
3171 | ||
3172 | /* Locate route within the VNI IP table. */ | |
3173 | dest = bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
3174 | if (!dest) | |
3175 | return 0; | |
3176 | ||
3177 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3178 | parent_pi); | |
3179 | ||
9bcb3eef | 3180 | bgp_dest_unlock_node(dest); |
a97a1e11 | 3181 | |
50f74cf1 | 3182 | return ret; |
3183 | } | |
3184 | ||
852d9f97 SW |
3185 | /* |
3186 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3187 | */ | |
3188 | static int | |
3189 | uninstall_evpn_route_entry_in_vni_mac(struct bgp *bgp, struct bgpevpn *vpn, | |
3190 | const struct prefix_evpn *p, | |
3191 | struct bgp_path_info *parent_pi) | |
3192 | { | |
3193 | int ret; | |
3194 | struct bgp_dest *dest; | |
3195 | ||
3196 | /* Only type-2 routes go into this table */ | |
3197 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3198 | return 0; | |
3199 | ||
3200 | /* Locate route within the VNI MAC table. */ | |
3201 | dest = bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, parent_pi); | |
3202 | if (!dest) | |
3203 | return 0; | |
3204 | ||
3205 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3206 | parent_pi); | |
3207 | ||
3208 | bgp_dest_unlock_node(dest); | |
3209 | ||
3210 | return ret; | |
3211 | } | |
d3135ba3 | 3212 | /* |
3213 | * Uninstall route entry from the VRF routing table and send message | |
3214 | * to zebra, if appropriate. | |
3215 | */ | |
3216 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 3217 | const struct prefix_evpn *evp, |
40381db7 | 3218 | struct bgp_path_info *parent_pi) |
d3135ba3 | 3219 | { |
9bcb3eef | 3220 | struct bgp_dest *dest; |
40381db7 | 3221 | struct bgp_path_info *pi; |
c4edf708 | 3222 | int ret = 0; |
d3135ba3 | 3223 | struct prefix p; |
3224 | struct prefix *pp = &p; | |
3225 | afi_t afi = 0; | |
3226 | safi_t safi = 0; | |
3227 | ||
3228 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 3229 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 3230 | |
2dbe669b | 3231 | if (bgp_debug_zebra(NULL)) |
996c9314 | 3232 | zlog_debug( |
2dbe669b DA |
3233 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
3234 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
3235 | parent_pi->flags); | |
1eb88002 | 3236 | |
d3135ba3 | 3237 | /* Locate route within the VRF. */ |
3238 | /* NOTE: There is no RD here. */ | |
3714a385 | 3239 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 3240 | afi = AFI_IP; |
3241 | safi = SAFI_UNICAST; | |
9bcb3eef | 3242 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3243 | } else { |
3244 | afi = AFI_IP6; | |
3245 | safi = SAFI_UNICAST; | |
9bcb3eef | 3246 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3247 | } |
3248 | ||
9bcb3eef | 3249 | if (!dest) |
d3135ba3 | 3250 | return 0; |
3251 | ||
3252 | /* Find matching route entry. */ | |
9bcb3eef | 3253 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3254 | if (pi->extra |
3255 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 3256 | break; |
3257 | ||
e71ad4b6 DA |
3258 | if (!pi) { |
3259 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 3260 | return 0; |
e71ad4b6 | 3261 | } |
d3135ba3 | 3262 | |
5f0c5ec8 | 3263 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
3264 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
3265 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
3266 | pi->flags); | |
5f0c5ec8 | 3267 | |
7452e879 | 3268 | /* Process for route leaking. */ |
3269 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
3270 | ||
9bcb3eef | 3271 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 3272 | safi); |
4c7a11d5 | 3273 | |
d3135ba3 | 3274 | /* Mark entry for deletion */ |
9bcb3eef | 3275 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 3276 | |
090efa2f AK |
3277 | /* Unlink path to evpn nexthop */ |
3278 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
3279 | ||
d3135ba3 | 3280 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3281 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 3282 | |
3283 | /* Unlock route node. */ | |
9bcb3eef | 3284 | bgp_dest_unlock_node(dest); |
d3135ba3 | 3285 | |
3286 | return ret; | |
3287 | } | |
3288 | ||
128ea8ab | 3289 | /* |
852d9f97 SW |
3290 | * Install route entry into the VNI routing tables. |
3291 | */ | |
3292 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, | |
3293 | const struct prefix_evpn *p, | |
3294 | struct bgp_path_info *parent_pi) | |
3295 | { | |
3296 | int ret = 0; | |
3297 | ||
3298 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) | |
3299 | zlog_debug( | |
3300 | "%s (%u): Installing EVPN %pFX route in VNI %u IP/MAC table", | |
3301 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3302 | ||
3303 | ret = install_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); | |
3304 | ||
3305 | if (ret) { | |
3306 | flog_err( | |
3307 | EC_BGP_EVPN_FAIL, | |
3308 | "%s (%u): Failed to install EVPN %pFX route in VNI %u MAC table", | |
3309 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3310 | ||
3311 | return ret; | |
3312 | } | |
3313 | ||
3314 | ret = install_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); | |
3315 | ||
3316 | if (ret) { | |
3317 | flog_err( | |
3318 | EC_BGP_EVPN_FAIL, | |
3319 | "%s (%u): Failed to install EVPN %pFX route in VNI %u IP table", | |
3320 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3321 | ||
3322 | return ret; | |
3323 | } | |
3324 | ||
3325 | return ret; | |
3326 | } | |
3327 | ||
3328 | /* | |
3329 | * Uninstall route entry from the VNI routing tables. | |
128ea8ab | 3330 | */ |
d62a17ae | 3331 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 3332 | const struct prefix_evpn *p, |
40381db7 | 3333 | struct bgp_path_info *parent_pi) |
128ea8ab | 3334 | { |
852d9f97 | 3335 | int ret = 0; |
c44ab6f1 | 3336 | |
852d9f97 SW |
3337 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) |
3338 | zlog_debug( | |
3339 | "%s (%u): Uninstalling EVPN %pFX route from VNI %u IP/MAC table", | |
3340 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3341 | |
852d9f97 | 3342 | ret = uninstall_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); |
128ea8ab | 3343 | |
852d9f97 SW |
3344 | if (ret) { |
3345 | flog_err( | |
3346 | EC_BGP_EVPN_FAIL, | |
3347 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u IP table", | |
3348 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3349 | |
852d9f97 | 3350 | return ret; |
e71ad4b6 | 3351 | } |
128ea8ab | 3352 | |
852d9f97 | 3353 | ret = uninstall_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); |
128ea8ab | 3354 | |
852d9f97 SW |
3355 | if (ret) { |
3356 | flog_err( | |
3357 | EC_BGP_EVPN_FAIL, | |
3358 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u MAC table", | |
3359 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
9c7edc03 | 3360 | |
852d9f97 SW |
3361 | return ret; |
3362 | } | |
128ea8ab | 3363 | |
d62a17ae | 3364 | return ret; |
128ea8ab | 3365 | } |
3366 | ||
5ba238b7 MK |
3367 | /* |
3368 | * Given a route entry and a VRF, see if this route entry should be | |
3369 | * imported into the VRF i.e., RTs match. | |
3370 | */ | |
4b7e6066 | 3371 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 3372 | struct bgp_path_info *pi) |
5ba238b7 | 3373 | { |
40381db7 | 3374 | struct attr *attr = pi->attr; |
5ba238b7 | 3375 | struct ecommunity *ecom; |
f6e07e1b | 3376 | uint32_t i; |
5ba238b7 MK |
3377 | |
3378 | assert(attr); | |
3379 | /* Route should have valid RT to be even considered. */ | |
3380 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3381 | return 0; | |
3382 | ||
b53e67a3 | 3383 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
3384 | if (!ecom || !ecom->size) |
3385 | return 0; | |
3386 | ||
3387 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3388 | * matches, we're done. | |
3389 | */ | |
3390 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3391 | uint8_t *pnt; |
3392 | uint8_t type, sub_type; | |
5ba238b7 MK |
3393 | struct ecommunity_val *eval; |
3394 | struct ecommunity_val eval_tmp; | |
3395 | struct vrf_irt_node *irt; | |
3396 | ||
3397 | /* Only deal with RTs */ | |
34540b0d | 3398 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 3399 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3400 | + (i * ecom->unit_size)); |
5ba238b7 MK |
3401 | type = *pnt++; |
3402 | sub_type = *pnt++; | |
3403 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3404 | continue; | |
3405 | ||
3406 | /* See if this RT matches specified VNIs import RTs */ | |
3407 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 3408 | if (irt) |
5ba238b7 MK |
3409 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3410 | return 1; | |
3411 | ||
3412 | /* Also check for non-exact match. In this, we mask out the AS | |
3413 | * and | |
3414 | * only check on the local-admin sub-field. This is to | |
3415 | * facilitate using | |
3416 | * VNI as the RT for EBGP peering too. | |
3417 | */ | |
3418 | irt = NULL; | |
3419 | if (type == ECOMMUNITY_ENCODE_AS | |
3420 | || type == ECOMMUNITY_ENCODE_AS4 | |
3421 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3422 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
3423 | mask_ecom_global_admin(&eval_tmp, eval); |
3424 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3425 | } | |
5d9cbca2 | 3426 | if (irt) |
5ba238b7 MK |
3427 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3428 | return 1; | |
3429 | } | |
3430 | ||
3431 | return 0; | |
3432 | } | |
3433 | ||
128ea8ab | 3434 | /* |
3435 | * Given a route entry and a VNI, see if this route entry should be | |
3436 | * imported into the VNI i.e., RTs match. | |
3437 | */ | |
d62a17ae | 3438 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3439 | struct bgp_path_info *pi) |
d62a17ae | 3440 | { |
40381db7 | 3441 | struct attr *attr = pi->attr; |
d62a17ae | 3442 | struct ecommunity *ecom; |
f6e07e1b | 3443 | uint32_t i; |
d62a17ae | 3444 | |
3445 | assert(attr); | |
3446 | /* Route should have valid RT to be even considered. */ | |
3447 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3448 | return 0; | |
3449 | ||
b53e67a3 | 3450 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3451 | if (!ecom || !ecom->size) |
3452 | return 0; | |
3453 | ||
3454 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3455 | * matches, we're done. | |
3456 | */ | |
3457 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3458 | uint8_t *pnt; |
3459 | uint8_t type, sub_type; | |
d62a17ae | 3460 | struct ecommunity_val *eval; |
3461 | struct ecommunity_val eval_tmp; | |
3462 | struct irt_node *irt; | |
3463 | ||
3464 | /* Only deal with RTs */ | |
34540b0d | 3465 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3466 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3467 | + (i * ecom->unit_size)); |
d62a17ae | 3468 | type = *pnt++; |
3469 | sub_type = *pnt++; | |
3470 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3471 | continue; | |
3472 | ||
3473 | /* See if this RT matches specified VNIs import RTs */ | |
3474 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3475 | if (irt) |
d62a17ae | 3476 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3477 | return 1; | |
3478 | ||
3479 | /* Also check for non-exact match. In this, we mask out the AS | |
3480 | * and | |
3481 | * only check on the local-admin sub-field. This is to | |
3482 | * facilitate using | |
3483 | * VNI as the RT for EBGP peering too. | |
3484 | */ | |
3485 | irt = NULL; | |
3486 | if (type == ECOMMUNITY_ENCODE_AS | |
3487 | || type == ECOMMUNITY_ENCODE_AS4 | |
3488 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3489 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 3490 | mask_ecom_global_admin(&eval_tmp, eval); |
3491 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3492 | } | |
b1ab0dfe | 3493 | if (irt) |
d62a17ae | 3494 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3495 | return 1; | |
3496 | } | |
3497 | ||
3498 | return 0; | |
128ea8ab | 3499 | } |
3500 | ||
47bf0432 CS |
3501 | /* This API will scan evpn routes for checking attribute's rmac |
3502 | * macthes with bgp instance router mac. It avoid installing | |
3503 | * route into bgp vrf table and remote rmac in bridge table. | |
3504 | */ | |
3505 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3506 | const struct prefix_evpn *evp, |
47bf0432 CS |
3507 | struct bgp_path_info *pi) |
3508 | { | |
3509 | /* evpn route could have learnt prior to L3vni has come up, | |
3510 | * perform rmac check before installing route and | |
3511 | * remote router mac. | |
3512 | * The route will be removed from global bgp table once | |
3513 | * SVI comes up with MAC and stored in hash, triggers | |
3514 | * bgp_mac_rescan_all_evpn_tables. | |
3515 | */ | |
05864da7 | 3516 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 3517 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
3518 | char attr_str[BUFSIZ] = {0}; |
3519 | ||
5022c833 | 3520 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 3521 | |
2dbe669b DA |
3522 | zlog_debug( |
3523 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
3524 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
3525 | } |
3526 | ||
3527 | return 1; | |
3528 | } | |
3529 | ||
3530 | return 0; | |
3531 | } | |
3532 | ||
bbc57c6c AK |
3533 | /* don't import hosts that are locally attached */ |
3534 | static inline bool | |
36dd4574 AK |
3535 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
3536 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
3537 | struct bgp_path_info *pi, int install) |
3538 | { | |
26c03e43 | 3539 | esi_t *esi; |
bbc57c6c | 3540 | |
26c03e43 AK |
3541 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3542 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
3543 | ||
3544 | /* Don't import routes that point to a local destination */ | |
3545 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
3546 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
3547 | char esi_buf[ESI_STR_LEN]; | |
3548 | ||
3549 | zlog_debug( | |
3550 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
3551 | install ? "import" : "unimport", evp, | |
3552 | esi_to_str(esi, esi_buf, | |
3553 | sizeof(esi_buf))); | |
3554 | } | |
3555 | return true; | |
3556 | } | |
58bff4d1 AK |
3557 | } |
3558 | return false; | |
3559 | } | |
26c03e43 | 3560 | |
58bff4d1 AK |
3561 | /* |
3562 | * Install or uninstall a mac-ip route in the provided vrf if | |
3563 | * there is a rt match | |
3564 | */ | |
3565 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3566 | struct bgp_path_info *pi, | |
3567 | int install) | |
3568 | { | |
3569 | int ret = 0; | |
3570 | const struct prefix_evpn *evp = | |
3571 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3572 | ||
3573 | /* Consider "valid" remote routes applicable for | |
3574 | * this VRF. | |
3575 | */ | |
3576 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3577 | && pi->type == ZEBRA_ROUTE_BGP | |
3578 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3579 | return 0; | |
3580 | ||
58bff4d1 AK |
3581 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3582 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3583 | return 0; | |
3584 | ||
74efb822 | 3585 | /* don't import hosts that are locally attached */ |
e57e63eb | 3586 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3587 | bgp_vrf, evp, pi, install)) | |
3588 | return 0; | |
3589 | ||
3590 | if (install) | |
58bff4d1 | 3591 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3592 | else |
58bff4d1 AK |
3593 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3594 | pi); | |
26c03e43 | 3595 | |
58bff4d1 AK |
3596 | if (ret) |
3597 | flog_err(EC_BGP_EVPN_FAIL, | |
3598 | "Failed to %s EVPN %pFX route in VRF %s", | |
3599 | install ? "install" : "uninstall", evp, | |
3600 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3601 | } |
58bff4d1 AK |
3602 | |
3603 | return ret; | |
bbc57c6c AK |
3604 | } |
3605 | ||
5ba238b7 MK |
3606 | /* |
3607 | * Install or uninstall mac-ip routes are appropriate for this | |
3608 | * particular VRF. | |
3609 | */ | |
996c9314 | 3610 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3611 | { |
3612 | afi_t afi; | |
3613 | safi_t safi; | |
9bcb3eef | 3614 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3615 | struct bgp_table *table; |
40381db7 | 3616 | struct bgp_path_info *pi; |
5ba238b7 | 3617 | int ret; |
5e53dce3 | 3618 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3619 | |
3620 | afi = AFI_L2VPN; | |
3621 | safi = SAFI_EVPN; | |
5e53dce3 T |
3622 | bgp_evpn = bgp_get_evpn(); |
3623 | if (!bgp_evpn) | |
5ba238b7 MK |
3624 | return -1; |
3625 | ||
3626 | /* Walk entire global routing table and evaluate routes which could be | |
3627 | * imported into this VRF. Note that we need to loop through all global | |
3628 | * routes to determine which route matches the import rt on vrf | |
3629 | */ | |
9bcb3eef DS |
3630 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3631 | rd_dest = bgp_route_next(rd_dest)) { | |
3632 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3633 | if (!table) |
3634 | continue; | |
3635 | ||
9bcb3eef DS |
3636 | for (dest = bgp_table_top(table); dest; |
3637 | dest = bgp_route_next(dest)) { | |
3638 | const struct prefix_evpn *evp = | |
3639 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3640 | dest); | |
5ba238b7 | 3641 | |
1eb88002 | 3642 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3643 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3644 | || evp->prefix.route_type | |
3645 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3646 | continue; |
3647 | ||
1eb88002 | 3648 | /* if not a mac+ip route skip this route */ |
3714a385 | 3649 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3650 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3651 | continue; |
3652 | ||
9bcb3eef | 3653 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3654 | pi = pi->next) { |
58bff4d1 AK |
3655 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3656 | bgp_vrf, pi, install); | |
3657 | if (ret) | |
3658 | return ret; | |
5ba238b7 MK |
3659 | } |
3660 | } | |
3661 | } | |
3662 | ||
3663 | return 0; | |
3664 | } | |
3665 | ||
128ea8ab | 3666 | /* |
3667 | * Install or uninstall routes of specified type that are appropriate for this | |
3668 | * particular VNI. | |
3669 | */ | |
d62a17ae | 3670 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3671 | struct bgpevpn *vpn, | |
3672 | bgp_evpn_route_type rtype, | |
3673 | int install) | |
3674 | { | |
0291c246 MK |
3675 | afi_t afi; |
3676 | safi_t safi; | |
9bcb3eef | 3677 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3678 | struct bgp_table *table; |
40381db7 | 3679 | struct bgp_path_info *pi; |
0291c246 | 3680 | int ret; |
d62a17ae | 3681 | |
3682 | afi = AFI_L2VPN; | |
3683 | safi = SAFI_EVPN; | |
3684 | ||
3685 | /* Walk entire global routing table and evaluate routes which could be | |
3686 | * imported into this VPN. Note that we cannot just look at the routes | |
3687 | * for | |
3688 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3689 | * RD. | |
3690 | */ | |
3691 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3692 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3693 | rd_dest = bgp_route_next(rd_dest)) { | |
3694 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3695 | if (!table) |
3696 | continue; | |
3697 | ||
9bcb3eef DS |
3698 | for (dest = bgp_table_top(table); dest; |
3699 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3700 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3701 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3702 | dest); | |
d62a17ae | 3703 | |
3704 | if (evp->prefix.route_type != rtype) | |
3705 | continue; | |
3706 | ||
9bcb3eef | 3707 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3708 | pi = pi->next) { |
d62a17ae | 3709 | /* Consider "valid" remote routes applicable for |
3710 | * this VNI. */ | |
40381db7 DS |
3711 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3712 | && pi->type == ZEBRA_ROUTE_BGP | |
3713 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3714 | continue; |
3715 | ||
40381db7 | 3716 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3717 | if (install) |
3718 | ret = install_evpn_route_entry( | |
40381db7 | 3719 | bgp, vpn, evp, pi); |
d62a17ae | 3720 | else |
3721 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3722 | bgp, vpn, evp, pi); |
d62a17ae | 3723 | |
3724 | if (ret) { | |
af4c2728 | 3725 | flog_err( |
e50f7cfd | 3726 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3727 | "%u: Failed to %s EVPN %s route in VNI %u", |
3728 | bgp->vrf_id, | |
3729 | install ? "install" | |
3730 | : "uninstall", | |
3731 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3732 | ? "MACIP" | |
3733 | : "IMET", | |
3734 | vpn->vni); | |
dc52bece DS |
3735 | |
3736 | bgp_dest_unlock_node(rd_dest); | |
3737 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3738 | return ret; |
3739 | } | |
3740 | } | |
3741 | } | |
3742 | } | |
3743 | } | |
3744 | ||
3745 | return 0; | |
128ea8ab | 3746 | } |
3747 | ||
5ba238b7 | 3748 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3749 | * is invoked upon l3vni-add or l3vni import rt change |
3750 | */ | |
5ba238b7 MK |
3751 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3752 | { | |
3753 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3754 | return 0; | |
3755 | } | |
3756 | ||
128ea8ab | 3757 | /* |
3758 | * Install any existing remote routes applicable for this VNI into its | |
3759 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3760 | * RT is changed. | |
3761 | */ | |
d62a17ae | 3762 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3763 | { |
d62a17ae | 3764 | int ret; |
128ea8ab | 3765 | |
d62a17ae | 3766 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3767 | * for this VNI. | |
3768 | */ | |
3769 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3770 | 1); | |
3771 | if (ret) | |
3772 | return ret; | |
128ea8ab | 3773 | |
c44ab6f1 AK |
3774 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3775 | 1); | |
3776 | if (ret) | |
3777 | return ret; | |
3778 | ||
d62a17ae | 3779 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3780 | 1); | |
128ea8ab | 3781 | } |
3782 | ||
5ba238b7 MK |
3783 | /* uninstall routes from l3vni vrf. */ |
3784 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3785 | { | |
3786 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3787 | return 0; | |
3788 | } | |
3789 | ||
90e60aa7 | 3790 | /* |
3791 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3792 | * this is invoked is upon an import RT change. | |
3793 | */ | |
d62a17ae | 3794 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3795 | { |
d62a17ae | 3796 | int ret; |
90e60aa7 | 3797 | |
d62a17ae | 3798 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3799 | * applicable | |
3800 | * for this VNI. | |
3801 | */ | |
3802 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3803 | 0); | |
3804 | if (ret) | |
3805 | return ret; | |
90e60aa7 | 3806 | |
c44ab6f1 | 3807 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3808 | 0); |
c44ab6f1 AK |
3809 | if (ret) |
3810 | return ret; | |
3811 | ||
3812 | ||
d62a17ae | 3813 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3814 | 0); | |
90e60aa7 | 3815 | } |
3816 | ||
d3135ba3 | 3817 | /* |
3818 | * Install or uninstall route in matching VRFs (list). | |
3819 | */ | |
3820 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3821 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3822 | struct bgp_path_info *pi, |
d3135ba3 | 3823 | struct list *vrfs, int install) |
3824 | { | |
d3135ba3 | 3825 | struct bgp *bgp_vrf; |
3826 | struct listnode *node, *nnode; | |
3827 | ||
90264d64 | 3828 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3829 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3830 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3831 | return 0; |
3832 | ||
90264d64 | 3833 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3834 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3835 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3836 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3837 | return 0; |
3838 | ||
d3135ba3 | 3839 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3840 | int ret; | |
3841 | ||
36dd4574 | 3842 | /* don't import hosts that are locally attached */ |
e57e63eb | 3843 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3844 | bgp_vrf, evp, pi, install)) | |
3845 | return 0; | |
3846 | ||
3847 | if (install) | |
40381db7 | 3848 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3849 | else |
996c9314 | 3850 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3851 | pi); |
d3135ba3 | 3852 | |
3853 | if (ret) { | |
e50f7cfd | 3854 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3855 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3856 | bgp_def->vrf_id, |
2dbe669b | 3857 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3858 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3859 | return ret; |
3860 | } | |
3861 | } | |
3862 | ||
3863 | return 0; | |
3864 | } | |
3865 | ||
128ea8ab | 3866 | /* |
3867 | * Install or uninstall route in matching VNIs (list). | |
3868 | */ | |
d62a17ae | 3869 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3870 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3871 | struct bgp_path_info *pi, |
d62a17ae | 3872 | struct list *vnis, int install) |
128ea8ab | 3873 | { |
d62a17ae | 3874 | struct bgpevpn *vpn; |
3875 | struct listnode *node, *nnode; | |
128ea8ab | 3876 | |
d62a17ae | 3877 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3878 | int ret; | |
128ea8ab | 3879 | |
d62a17ae | 3880 | if (!is_vni_live(vpn)) |
3881 | continue; | |
128ea8ab | 3882 | |
d62a17ae | 3883 | if (install) |
40381db7 | 3884 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3885 | else |
40381db7 | 3886 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3887 | |
d62a17ae | 3888 | if (ret) { |
1c50c1c0 QY |
3889 | flog_err(EC_BGP_EVPN_FAIL, |
3890 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3891 | bgp->vrf_id, install ? "install" : "uninstall", | |
3892 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3893 | ? "MACIP" | |
3894 | : "IMET", | |
3895 | vpn->vni); | |
d62a17ae | 3896 | return ret; |
3897 | } | |
3898 | } | |
128ea8ab | 3899 | |
d62a17ae | 3900 | return 0; |
128ea8ab | 3901 | } |
3902 | ||
3903 | /* | |
50f74cf1 | 3904 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3905 | */ |
26c03e43 AK |
3906 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3907 | safi_t safi, const struct prefix *p, | |
3908 | struct bgp_path_info *pi, | |
3909 | int import, bool in_vni_rt, | |
3910 | bool in_vrf_rt) | |
d62a17ae | 3911 | { |
3912 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3913 | struct attr *attr = pi->attr; |
d62a17ae | 3914 | struct ecommunity *ecom; |
f6e07e1b | 3915 | uint32_t i; |
c44ab6f1 | 3916 | struct prefix_evpn ad_evp; |
d62a17ae | 3917 | |
3918 | assert(attr); | |
3919 | ||
fff7545a | 3920 | /* Only type-1, type-2, type-3, type-4 and type-5 |
3921 | * are supported currently | |
3922 | */ | |
d62a17ae | 3923 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3924 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3925 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3926 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3927 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3928 | return 0; |
3929 | ||
3930 | /* If we don't have Route Target, nothing much to do. */ | |
3931 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3932 | return 0; | |
3933 | ||
c44ab6f1 AK |
3934 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3935 | * we need to create a different copy for the VNI | |
3936 | */ | |
3937 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
852d9f97 SW |
3938 | evp = evpn_type1_prefix_vni_ip_copy(&ad_evp, evp, |
3939 | attr->nexthop); | |
c44ab6f1 | 3940 | |
b53e67a3 | 3941 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3942 | if (!ecom || !ecom->size) |
3943 | return -1; | |
3944 | ||
50f74cf1 | 3945 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3946 | * attached to the route */ | |
d62a17ae | 3947 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3948 | uint8_t *pnt; |
3949 | uint8_t type, sub_type; | |
d62a17ae | 3950 | struct ecommunity_val *eval; |
3951 | struct ecommunity_val eval_tmp; | |
996c9314 | 3952 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3953 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3954 | struct bgp_evpn_es *es; |
d62a17ae | 3955 | |
3956 | /* Only deal with RTs */ | |
34540b0d | 3957 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3958 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3959 | + (i * ecom->unit_size)); |
d62a17ae | 3960 | type = *pnt++; |
3961 | sub_type = *pnt++; | |
3962 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3963 | continue; | |
3964 | ||
58bff4d1 AK |
3965 | /* non-local MAC-IP routes in the global route table are linked |
3966 | * to the destination ES | |
3967 | */ | |
3968 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3969 | bgp_evpn_path_es_link(pi, 0, | |
3970 | bgp_evpn_attr_get_esi(pi->attr)); | |
3971 | ||
50f74cf1 | 3972 | /* |
3973 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3974 | * IMET route is imported into VNI table. | |
3975 | * prefix routes are imported into VRF table. | |
523cafc4 | 3976 | */ |
50f74cf1 | 3977 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3978 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3979 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3980 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3981 | |
26c03e43 | 3982 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3983 | if (irt) |
40381db7 DS |
3984 | install_uninstall_route_in_vnis( |
3985 | bgp, afi, safi, evp, pi, irt->vnis, | |
3986 | import); | |
50f74cf1 | 3987 | |
26c03e43 | 3988 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3989 | if (vrf_irt) |
40381db7 DS |
3990 | install_uninstall_route_in_vrfs( |
3991 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3992 | import); | |
50f74cf1 | 3993 | |
3994 | /* Also check for non-exact match. | |
3995 | * In this, we mask out the AS and | |
3996 | * only check on the local-admin sub-field. | |
3997 | * This is to facilitate using | |
3998 | * VNI as the RT for EBGP peering too. | |
3999 | */ | |
4000 | irt = NULL; | |
4001 | vrf_irt = NULL; | |
4002 | if (type == ECOMMUNITY_ENCODE_AS | |
4003 | || type == ECOMMUNITY_ENCODE_AS4 | |
4004 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 4005 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 4006 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
4007 | if (in_vni_rt) |
4008 | irt = lookup_import_rt(bgp, &eval_tmp); | |
4009 | if (in_vrf_rt) | |
4010 | vrf_irt = | |
4011 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 4012 | } |
4013 | ||
4014 | if (irt) | |
40381db7 DS |
4015 | install_uninstall_route_in_vnis( |
4016 | bgp, afi, safi, evp, pi, irt->vnis, | |
4017 | import); | |
50f74cf1 | 4018 | if (vrf_irt) |
40381db7 DS |
4019 | install_uninstall_route_in_vrfs( |
4020 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
4021 | import); | |
50f74cf1 | 4022 | } |
4023 | ||
4024 | /* es route is imported into the es table */ | |
4025 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
4026 | ||
4027 | /* we will match based on the entire esi to avoid | |
fff7545a | 4028 | * import of an es route for esi2 into esi1 |
50f74cf1 | 4029 | */ |
c44ab6f1 | 4030 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 4031 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 4032 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 4033 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 4034 | } |
d62a17ae | 4035 | } |
4036 | ||
4037 | return 0; | |
128ea8ab | 4038 | } |
4039 | ||
26c03e43 AK |
4040 | /* |
4041 | * Install or uninstall route for appropriate VNIs/ESIs. | |
4042 | */ | |
4043 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
4044 | const struct prefix *p, | |
4045 | struct bgp_path_info *pi, int import) | |
4046 | { | |
4047 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
4048 | true, true); | |
4049 | } | |
4050 | ||
74efb822 AK |
4051 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
4052 | { | |
4053 | struct bgp *bgp_evpn; | |
4054 | ||
4055 | bgp_evpn = bgp_get_evpn(); | |
4056 | if (!bgp_evpn) | |
4057 | return; | |
4058 | ||
4059 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
4060 | &pi->net->p, pi, import); | |
4061 | } | |
4062 | ||
2bb9eff4 DS |
4063 | /* |
4064 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
4065 | * routes | |
4066 | */ | |
80b140af MK |
4067 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
4068 | { | |
5fd9c12b KA |
4069 | /* Delete ipv4 default route and withdraw from peers */ |
4070 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4071 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4072 | SAFI_UNICAST, false); | |
4073 | ||
80b140af | 4074 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
4075 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4076 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4077 | |
5fd9c12b KA |
4078 | /* Delete ipv6 default route and withdraw from peers */ |
4079 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4080 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4081 | SAFI_UNICAST, false); | |
4082 | ||
80b140af | 4083 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
4084 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4085 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
4086 | } |
4087 | ||
2bb9eff4 DS |
4088 | /* |
4089 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
4090 | * routes | |
4091 | */ | |
5394a276 | 4092 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 4093 | { |
5394a276 CS |
4094 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
4095 | ||
4096 | bgp_evpn = bgp_get_evpn(); | |
4097 | if (!bgp_evpn) | |
4098 | return; | |
4099 | ||
80b140af | 4100 | /* update all ipv4 routes */ |
fdf19f06 MK |
4101 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4102 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4103 | |
5fd9c12b KA |
4104 | /* update ipv4 default route and withdraw from peers */ |
4105 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4106 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4107 | SAFI_UNICAST, true); | |
4108 | ||
80b140af | 4109 | /* update all ipv6 routes */ |
fdf19f06 MK |
4110 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4111 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
4112 | |
4113 | /* update ipv6 default route and withdraw from peers */ | |
4114 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4115 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4116 | SAFI_UNICAST, true); | |
4117 | ||
80b140af MK |
4118 | } |
4119 | ||
676f83b9 | 4120 | /* |
4121 | * update and advertise local routes for a VRF as type-5 routes. | |
4122 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
4123 | * done in the global route table using the routes which already exist in the | |
4124 | * VRF routing table | |
4125 | */ | |
80b140af | 4126 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4127 | { |
80b140af MK |
4128 | /* skip if the RD is configured */ |
4129 | if (is_vrf_rd_configured(bgp_vrf)) | |
4130 | return; | |
4131 | ||
4132 | /* derive the RD for the VRF based on new router-id */ | |
4133 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
4134 | ||
4135 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
4136 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 4137 | } |
4138 | ||
4139 | /* | |
4140 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
4141 | * This is invoked upon VRF RD change. The processing is done only from global | |
4142 | * table. | |
4143 | */ | |
80b140af | 4144 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4145 | { |
80b140af MK |
4146 | /* skip if the RD is configured */ |
4147 | if (is_vrf_rd_configured(bgp_vrf)) | |
4148 | return; | |
4149 | ||
4150 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
4151 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 4152 | } |
4153 | ||
852d9f97 SW |
4154 | static void update_advertise_vni_route(struct bgp *bgp, struct bgpevpn *vpn, |
4155 | struct bgp_dest *dest) | |
4156 | { | |
4157 | struct bgp_dest *global_dest; | |
4158 | struct bgp_path_info *pi, *global_pi; | |
4159 | struct attr *attr; | |
4160 | afi_t afi = AFI_L2VPN; | |
4161 | safi_t safi = SAFI_EVPN; | |
4162 | ||
4163 | struct prefix_evpn tmp_evp; | |
4164 | const struct prefix_evpn *evp = | |
4165 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
4166 | ||
4167 | /* | |
4168 | * We have already processed type-3 routes. | |
4169 | * Process only type-1 and type-2 routes here. | |
4170 | */ | |
4171 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE && | |
4172 | evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
4173 | return; | |
4174 | ||
4175 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
4176 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP && | |
4177 | pi->sub_type == BGP_ROUTE_STATIC) | |
4178 | break; | |
4179 | if (!pi) | |
4180 | return; | |
4181 | ||
4182 | /* | |
4183 | * VNI table MAC-IP prefixes don't have MAC so make sure it's | |
4184 | * set from path info here. | |
4185 | */ | |
4186 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4187 | if (is_evpn_prefix_ipaddr_none(evp)) { | |
4188 | /* VNI MAC -> Global */ | |
4189 | evpn_type2_prefix_global_copy( | |
4190 | &tmp_evp, evp, NULL /* mac */, | |
4191 | evpn_type2_path_info_get_ip(pi)); | |
4192 | } else { | |
4193 | /* VNI IP -> Global */ | |
4194 | evpn_type2_prefix_global_copy( | |
4195 | &tmp_evp, evp, evpn_type2_path_info_get_mac(pi), | |
4196 | NULL /* ip */); | |
4197 | } | |
4198 | } else { | |
4199 | memcpy(&tmp_evp, evp, sizeof(tmp_evp)); | |
4200 | } | |
4201 | ||
4202 | /* Create route in global routing table using this route entry's | |
4203 | * attribute. | |
4204 | */ | |
4205 | attr = pi->attr; | |
4206 | global_dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, | |
4207 | &tmp_evp, &vpn->prd, NULL); | |
4208 | assert(global_dest); | |
4209 | ||
4210 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4211 | /* Type-2 route */ | |
4212 | update_evpn_route_entry( | |
4213 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
4214 | NULL /* ip */, 1, &global_pi, 0, | |
4215 | mac_mobility_seqnum(attr), false /* setup_sync */, | |
4216 | NULL /* old_is_sync */); | |
4217 | } else { | |
4218 | /* Type-1 route */ | |
4219 | struct bgp_evpn_es *es; | |
4220 | int route_changed = 0; | |
4221 | ||
4222 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
4223 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, global_dest, | |
4224 | attr, &global_pi, &route_changed); | |
4225 | } | |
4226 | ||
4227 | /* Schedule for processing and unlock node. */ | |
4228 | bgp_process(bgp, global_dest, afi, safi); | |
4229 | bgp_dest_unlock_node(global_dest); | |
4230 | } | |
4231 | ||
90e60aa7 | 4232 | /* |
4233 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
4234 | * change. Note that the processing is done only on the global route table | |
4235 | * using routes that already exist in the per-VNI table. | |
4236 | */ | |
852d9f97 | 4237 | static void update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 4238 | { |
4239 | struct prefix_evpn p; | |
9bcb3eef | 4240 | struct bgp_dest *dest, *global_dest; |
852d9f97 | 4241 | struct bgp_path_info *pi; |
d62a17ae | 4242 | struct attr *attr; |
4243 | afi_t afi = AFI_L2VPN; | |
4244 | safi_t safi = SAFI_EVPN; | |
4245 | ||
4246 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
4247 | * attributes to create and advertise the type-3 route for this VNI | |
4248 | * in the global table. | |
fd069644 DS |
4249 | * |
4250 | * RT-3 only if doing head-end replication | |
d62a17ae | 4251 | */ |
833b8a50 AK |
4252 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
4253 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 4254 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
852d9f97 | 4255 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
9bcb3eef | 4256 | if (!dest) /* unexpected */ |
852d9f97 | 4257 | return; |
9bcb3eef | 4258 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
4259 | if (pi->peer == bgp->peer_self && |
4260 | pi->type == ZEBRA_ROUTE_BGP | |
4261 | && pi->sub_type == BGP_ROUTE_STATIC) | |
4262 | break; | |
fd43ffd9 DA |
4263 | if (!pi) { |
4264 | bgp_dest_unlock_node(dest); | |
852d9f97 | 4265 | return; |
fd43ffd9 | 4266 | } |
852d9f97 | 4267 | |
fd069644 | 4268 | attr = pi->attr; |
d62a17ae | 4269 | |
34c7f35f SW |
4270 | global_dest = bgp_evpn_global_node_get( |
4271 | bgp->rib[afi][safi], afi, safi, &p, &vpn->prd, NULL); | |
4272 | update_evpn_route_entry( | |
4273 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
852d9f97 | 4274 | NULL /* ip */, 1, &pi, 0, mac_mobility_seqnum(attr), |
34c7f35f | 4275 | false /* setup_sync */, NULL /* old_is_sync */); |
d62a17ae | 4276 | |
fd069644 | 4277 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
4278 | bgp_process(bgp, global_dest, afi, safi); |
4279 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 4280 | } |
d62a17ae | 4281 | |
852d9f97 SW |
4282 | /* Now, walk this VNI's MAC & IP route table and use the route and its |
4283 | * attribute to create and schedule route in global table. | |
d62a17ae | 4284 | */ |
852d9f97 SW |
4285 | for (dest = bgp_table_top(vpn->mac_table); dest; |
4286 | dest = bgp_route_next(dest)) | |
4287 | update_advertise_vni_route(bgp, vpn, dest); | |
d62a17ae | 4288 | |
852d9f97 SW |
4289 | for (dest = bgp_table_top(vpn->ip_table); dest; |
4290 | dest = bgp_route_next(dest)) | |
4291 | update_advertise_vni_route(bgp, vpn, dest); | |
90e60aa7 | 4292 | } |
4293 | ||
4294 | /* | |
4295 | * Delete (and withdraw) local routes for a VNI - only from the global | |
4296 | * table. Invoked upon router-id change. | |
4297 | */ | |
d62a17ae | 4298 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4299 | { |
d62a17ae | 4300 | struct prefix_evpn p; |
9bcb3eef | 4301 | struct bgp_dest *global_dest; |
40381db7 | 4302 | struct bgp_path_info *pi; |
d62a17ae | 4303 | afi_t afi = AFI_L2VPN; |
4304 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 4305 | |
d62a17ae | 4306 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
4307 | * for this VNI - from the global table. | |
4308 | */ | |
17151ae9 | 4309 | delete_global_type2_routes(bgp, vpn); |
90e60aa7 | 4310 | |
d62a17ae | 4311 | /* Remove type-3 route for this VNI from global table. */ |
4312 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
0da34e49 DA |
4313 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], safi, &p, |
4314 | &vpn->prd, NULL); | |
9bcb3eef | 4315 | if (global_dest) { |
d62a17ae | 4316 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 4317 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 4318 | |
d62a17ae | 4319 | /* Schedule for processing - withdraws to peers happen from |
4320 | * this table. | |
4321 | */ | |
40381db7 | 4322 | if (pi) |
9bcb3eef DS |
4323 | bgp_process(bgp, global_dest, afi, safi); |
4324 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 4325 | } |
90e60aa7 | 4326 | |
d60f63f0 AD |
4327 | |
4328 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 4329 | return 0; |
90e60aa7 | 4330 | } |
4331 | ||
2d48ee25 | 4332 | /* |
4333 | * Handle router-id change. Update and advertise local routes corresponding | |
4334 | * to this VNI from peers. Note that this is invoked after updating the | |
4335 | * router-id. The routes in the per-VNI table are used to create routes in | |
4336 | * the global table and schedule them. | |
4337 | */ | |
e3b78da8 | 4338 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4339 | { |
e3b78da8 | 4340 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4341 | |
d62a17ae | 4342 | /* Skip VNIs with configured RD. */ |
4343 | if (is_rd_configured(vpn)) | |
4344 | return; | |
2d48ee25 | 4345 | |
d62a17ae | 4346 | bgp_evpn_derive_auto_rd(bgp, vpn); |
4347 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 4348 | } |
4349 | ||
4350 | /* | |
4351 | * Handle router-id change. Delete and withdraw local routes corresponding | |
4352 | * to this VNI from peers. Note that this is invoked prior to updating | |
4353 | * the router-id and is done only on the global route table, the routes | |
4354 | * are needed in the per-VNI table to re-advertise with new router id. | |
4355 | */ | |
e3b78da8 | 4356 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4357 | { |
e3b78da8 | 4358 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4359 | |
d62a17ae | 4360 | /* Skip VNIs with configured RD. */ |
4361 | if (is_rd_configured(vpn)) | |
4362 | return; | |
2d48ee25 | 4363 | |
d62a17ae | 4364 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 4365 | } |
4366 | ||
fd069644 DS |
4367 | /* |
4368 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
4369 | * This is invoked upon flooding mode changing to head-end replication. | |
4370 | */ | |
e3b78da8 | 4371 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4372 | { |
e3b78da8 | 4373 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4374 | struct bgp *bgp = data; |
4375 | struct prefix_evpn p; | |
4376 | ||
833b8a50 AK |
4377 | if (!vpn || !is_vni_live(vpn) || |
4378 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
4379 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
4380 | return; |
4381 | ||
4382 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 4383 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
4384 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
4385 | "Type3 route creation failure for VNI %u", vpn->vni); | |
4386 | } | |
4387 | ||
4388 | /* | |
4389 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
4390 | * This is invoked upon flooding mode changing to drop BUM packets. | |
4391 | */ | |
e3b78da8 | 4392 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4393 | { |
e3b78da8 | 4394 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4395 | struct bgp *bgp = data; |
4396 | struct prefix_evpn p; | |
4397 | ||
4398 | if (!vpn || !is_vni_live(vpn)) | |
4399 | return; | |
4400 | ||
4401 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4402 | delete_evpn_route(bgp, vpn, &p); | |
4403 | } | |
4404 | ||
128ea8ab | 4405 | /* |
4406 | * Process received EVPN type-2 route (advertise or withdraw). | |
4407 | */ | |
d62a17ae | 4408 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4409 | struct attr *attr, uint8_t *pfx, int psize, |
4410 | uint32_t addpath_id) | |
d62a17ae | 4411 | { |
4412 | struct prefix_rd prd; | |
e121d831 QY |
4413 | struct prefix_evpn p = {}; |
4414 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
4415 | uint8_t ipaddr_len; |
4416 | uint8_t macaddr_len; | |
e121d831 QY |
4417 | /* holds the VNI(s) as in packet */ |
4418 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 4419 | uint32_t num_labels = 0; |
554cd77a | 4420 | uint32_t eth_tag; |
367b458c | 4421 | int ret = 0; |
d62a17ae | 4422 | |
4423 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
4424 | * additional 3 bytes if there is a second label (VNI): | |
4425 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
4426 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
4427 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
4428 | */ | |
4429 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
4430 | && psize != 40 && psize != 52) { | |
e50f7cfd | 4431 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4432 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
4433 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4434 | return -1; |
4435 | } | |
4436 | ||
e121d831 QY |
4437 | struct stream *pkt = stream_new(psize); |
4438 | stream_put(pkt, pfx, psize); | |
554cd77a | 4439 | |
d62a17ae | 4440 | /* Make prefix_rd */ |
4441 | prd.family = AF_UNSPEC; | |
4442 | prd.prefixlen = 64; | |
e121d831 QY |
4443 | |
4444 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 4445 | |
4446 | /* Make EVPN prefix. */ | |
b03b8898 | 4447 | p.family = AF_EVPN; |
50f74cf1 | 4448 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4449 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
4450 | ||
554cd77a | 4451 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 4452 | if (attr) { |
e121d831 QY |
4453 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
4454 | ||
74efb822 | 4455 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
4456 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
4457 | else | |
4458 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
4459 | } else { |
4460 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 4461 | } |
d62a17ae | 4462 | |
554cd77a | 4463 | /* Copy Ethernet Tag */ |
e121d831 | 4464 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 4465 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4466 | |
4467 | /* Get the MAC Addr len */ | |
e121d831 | 4468 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 4469 | |
4470 | /* Get the MAC Addr */ | |
28328ea9 | 4471 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 4472 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 4473 | } else { |
af4c2728 | 4474 | flog_err( |
e50f7cfd | 4475 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4476 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
4477 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 4478 | goto fail; |
d62a17ae | 4479 | } |
4480 | ||
4481 | ||
4482 | /* Get the IP. */ | |
e121d831 QY |
4483 | STREAM_GETC(pkt, ipaddr_len); |
4484 | ||
d62a17ae | 4485 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
4486 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 4487 | flog_err( |
e50f7cfd | 4488 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4489 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
4490 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 4491 | goto fail; |
d62a17ae | 4492 | } |
4493 | ||
4494 | if (ipaddr_len) { | |
4495 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4496 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4497 | ? IPADDR_V4 |
4498 | : IPADDR_V6; | |
e121d831 | 4499 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 4500 | } |
d62a17ae | 4501 | |
b57ba6d2 | 4502 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 4503 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4504 | num_labels++; |
e121d831 | 4505 | |
b57ba6d2 | 4506 | /* Do we have a second VNI? */ |
e121d831 | 4507 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 4508 | num_labels++; |
e121d831 | 4509 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4510 | } |
d62a17ae | 4511 | |
4512 | /* Process the route. */ | |
4513 | if (attr) | |
367b458c DS |
4514 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4515 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4516 | &label[0], num_labels, 0, &evpn); | |
d62a17ae | 4517 | else |
bf0c6163 DA |
4518 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, afi, safi, |
4519 | ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, &label[0], | |
4520 | num_labels, &evpn); | |
e121d831 QY |
4521 | goto done; |
4522 | ||
4523 | fail: | |
4524 | stream_failure: | |
4525 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4526 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
4527 | peer->bgp->vrf_id, peer->host); | |
4528 | ret = -1; | |
4529 | done: | |
4530 | stream_free(pkt); | |
d62a17ae | 4531 | return ret; |
128ea8ab | 4532 | } |
4533 | ||
4534 | /* | |
4535 | * Process received EVPN type-3 route (advertise or withdraw). | |
4536 | */ | |
d62a17ae | 4537 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4538 | struct attr *attr, uint8_t *pfx, int psize, |
4539 | uint32_t addpath_id) | |
d62a17ae | 4540 | { |
4541 | struct prefix_rd prd; | |
4542 | struct prefix_evpn p; | |
d7c0a89a | 4543 | uint8_t ipaddr_len; |
554cd77a | 4544 | uint32_t eth_tag; |
d62a17ae | 4545 | |
4546 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4547 | * IP len (1) and IP (4 or 16). | |
4548 | */ | |
4549 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4550 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4551 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4552 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4553 | return -1; |
4554 | } | |
4555 | ||
7fd077aa | 4556 | /* If PMSI is present, log if it is anything other than IR. |
4557 | * Note: We just simply ignore the values as it is not clear if | |
4558 | * doing anything else is better. | |
4559 | */ | |
4560 | if (attr && | |
4561 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
4562 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
4563 | ||
4564 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
4565 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4566 | flog_warn( | |
4567 | EC_BGP_EVPN_PMSI_PRESENT, | |
4568 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4569 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 4570 | } |
4571 | } | |
4572 | ||
d62a17ae | 4573 | /* Make prefix_rd */ |
4574 | prd.family = AF_UNSPEC; | |
4575 | prd.prefixlen = 64; | |
4576 | memcpy(&prd.val, pfx, 8); | |
4577 | pfx += 8; | |
4578 | ||
4579 | /* Make EVPN prefix. */ | |
6006b807 | 4580 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4581 | p.family = AF_EVPN; |
50f74cf1 | 4582 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4583 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4584 | ||
554cd77a VB |
4585 | /* Copy Ethernet Tag */ |
4586 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4587 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4588 | pfx += 4; |
4589 | ||
4590 | /* Get the IP. */ | |
4591 | ipaddr_len = *pfx++; | |
4592 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4593 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4594 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4595 | } else { |
af4c2728 | 4596 | flog_err( |
e50f7cfd | 4597 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4598 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4599 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4600 | return -1; | |
4601 | } | |
4602 | ||
4603 | /* Process the route. */ | |
4604 | if (attr) | |
367b458c DS |
4605 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4606 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, | |
4607 | 0, 0, NULL); | |
d62a17ae | 4608 | else |
bf0c6163 DA |
4609 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, afi, safi, |
4610 | ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, 0, | |
4611 | NULL); | |
367b458c | 4612 | return 0; |
128ea8ab | 4613 | } |
4614 | ||
4615 | /* | |
4616 | * Process received EVPN type-5 route (advertise or withdraw). | |
4617 | */ | |
d62a17ae | 4618 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4619 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4620 | uint32_t addpath_id) |
d62a17ae | 4621 | { |
4622 | struct prefix_rd prd; | |
4623 | struct prefix_evpn p; | |
4624 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4625 | uint8_t ippfx_len; |
4626 | uint32_t eth_tag; | |
b57ba6d2 | 4627 | mpls_label_t label; /* holds the VNI as in the packet */ |
66ff6089 | 4628 | bool is_valid_update = true; |
d62a17ae | 4629 | |
4630 | /* Type-5 route should be 34 or 58 bytes: | |
4631 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4632 | * GW (4 or 16) and VNI (3). | |
4633 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4634 | */ | |
4635 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4636 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4637 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4638 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4639 | return -1; |
4640 | } | |
4641 | ||
4642 | /* Make prefix_rd */ | |
4643 | prd.family = AF_UNSPEC; | |
4644 | prd.prefixlen = 64; | |
4645 | memcpy(&prd.val, pfx, 8); | |
4646 | pfx += 8; | |
4647 | ||
4648 | /* Make EVPN prefix. */ | |
6006b807 | 4649 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4650 | p.family = AF_EVPN; |
50f74cf1 | 4651 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4652 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4653 | ||
4654 | /* Additional information outside of prefix - ESI and GW IP */ | |
4655 | memset(&evpn, 0, sizeof(evpn)); | |
4656 | ||
66ff6089 | 4657 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4658 | if (attr) |
66ff6089 | 4659 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4660 | pfx += ESI_BYTES; |
d62a17ae | 4661 | |
4662 | /* Fetch Ethernet Tag. */ | |
4663 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4664 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4665 | pfx += 4; |
4666 | ||
4667 | /* Fetch IP prefix length. */ | |
4668 | ippfx_len = *pfx++; | |
4669 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4670 | flog_err( |
e50f7cfd | 4671 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4672 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4673 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4674 | return -1; | |
4675 | } | |
3714a385 | 4676 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4677 | |
4678 | /* Determine IPv4 or IPv6 prefix */ | |
4679 | /* Since the address and GW are from the same family, this just becomes | |
4680 | * a simple check on the total size. | |
4681 | */ | |
4682 | if (psize == 34) { | |
3714a385 | 4683 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4684 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4685 | pfx += 4; |
860e740b IR |
4686 | SET_IPADDR_V4(&evpn.gw_ip); |
4687 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4688 | pfx += 4; |
d62a17ae | 4689 | } else { |
3714a385 | 4690 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4691 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4692 | IPV6_MAX_BYTELEN); | |
4693 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4694 | SET_IPADDR_V6(&evpn.gw_ip); |
4695 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4696 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4697 | } |
4698 | ||
b57ba6d2 MK |
4699 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4700 | memset(&label, 0, sizeof(label)); | |
4701 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4702 | |
4703 | /* | |
4704 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4705 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4706 | * field | |
6b11bd8d | 4707 | */ |
d62a17ae | 4708 | |
66ff6089 AD |
4709 | /* |
4710 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4711 | * at the same time is should be treated as withdraw | |
4712 | */ | |
860e740b IR |
4713 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4714 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4715 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4716 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4717 | peer->host); | |
4718 | is_valid_update = false; | |
4719 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4720 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4721 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4722 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4723 | if (attr) { |
860e740b IR |
4724 | if (is_zero_mac(&attr->rmac) && |
4725 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4726 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4727 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4728 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4729 | peer->host); | |
c6ec0c74 | 4730 | is_valid_update = false; |
66ff6089 | 4731 | } |
c6ec0c74 KA |
4732 | |
4733 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4734 | is_valid_update = false; | |
4735 | } | |
4736 | ||
d62a17ae | 4737 | /* Process the route. */ |
66ff6089 | 4738 | if (attr && is_valid_update) |
367b458c DS |
4739 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
4740 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, | |
4741 | &label, 1, 0, &evpn); | |
66ff6089 AD |
4742 | else { |
4743 | if (!is_valid_update) { | |
4744 | char attr_str[BUFSIZ] = {0}; | |
4745 | ||
4746 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4747 | zlog_warn( | |
4748 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4749 | peer->hostname, peer->bgp->vrf_id, &p, | |
4750 | attr_str); | |
4751 | } | |
bf0c6163 DA |
4752 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, afi, safi, |
4753 | ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, &label, 1, | |
4754 | &evpn); | |
66ff6089 | 4755 | } |
d62a17ae | 4756 | |
367b458c | 4757 | return 0; |
d62a17ae | 4758 | } |
4759 | ||
5f040085 DS |
4760 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4761 | const struct prefix_rd *prd, | |
4762 | mpls_label_t *label, uint32_t num_labels, | |
4763 | struct attr *attr) | |
d62a17ae | 4764 | { |
4765 | int len; | |
4766 | char temp[16]; | |
5f040085 | 4767 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4768 | |
b5605493 | 4769 | memset(&temp, 0, sizeof(temp)); |
b03b8898 | 4770 | if (p->family != AF_EVPN) |
d62a17ae | 4771 | return; |
4772 | p_evpn_p = &(p->u.prefix_evpn); | |
4773 | ||
e9fc2840 | 4774 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4775 | IP and GW-IP have to be both ipv4 or ipv6 |
4776 | */ | |
3714a385 | 4777 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4778 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4779 | else |
e9fc2840 | 4780 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4781 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4782 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4783 | stream_put(s, prd->val, 8); | |
6c995628 | 4784 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4785 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4786 | else |
c44ab6f1 | 4787 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4788 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4789 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4790 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4791 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4792 | else |
3714a385 | 4793 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4794 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4795 | const struct bgp_route_evpn *evpn_overlay = |
4796 | bgp_attr_get_evpn_overlay(attr); | |
4797 | ||
3714a385 | 4798 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4799 | stream_put_ipv4(s, |
4800 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4801 | else |
860e740b | 4802 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4803 | } else { |
3714a385 | 4804 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4805 | stream_put_ipv4(s, 0); |
4806 | else | |
4807 | stream_put(s, &temp, 16); | |
4808 | } | |
4809 | ||
b57ba6d2 | 4810 | if (num_labels) |
d62a17ae | 4811 | stream_put(s, label, 3); |
4812 | else | |
4813 | stream_put3(s, 0); | |
128ea8ab | 4814 | } |
4815 | ||
4816 | /* | |
4817 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4818 | */ | |
e3b78da8 | 4819 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4820 | { |
e3b78da8 | 4821 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4822 | |
d62a17ae | 4823 | /* Remove EVPN routes and schedule for processing. */ |
4824 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4825 | |
d62a17ae | 4826 | /* Clear "live" flag and see if hash needs to be freed. */ |
4827 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4828 | if (!is_vni_configured(vpn)) | |
4829 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4830 | } |
4831 | ||
4832 | /* | |
4833 | * Free a VNI entry; iterator function called during cleanup. | |
4834 | */ | |
e3b78da8 | 4835 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4836 | { |
e3b78da8 | 4837 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4838 | |
d62a17ae | 4839 | delete_all_vni_routes(bgp, vpn); |
4840 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4841 | } |
4842 | ||
c581d8b0 MK |
4843 | /* |
4844 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4845 | */ | |
4846 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4847 | { | |
5e53dce3 | 4848 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4849 | |
58d8948c | 4850 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, true); |
10ebe1ab MK |
4851 | |
4852 | /* Map RT to VRF */ | |
5e53dce3 | 4853 | bgp_evpn = bgp_get_evpn(); |
58d8948c | 4854 | |
5e53dce3 | 4855 | if (!bgp_evpn) |
10ebe1ab | 4856 | return; |
58d8948c | 4857 | |
10ebe1ab | 4858 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); |
c581d8b0 MK |
4859 | } |
4860 | ||
4861 | /* | |
4862 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4863 | */ | |
4864 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4865 | { | |
ca337b46 SW |
4866 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, |
4867 | true); | |
c581d8b0 MK |
4868 | } |
4869 | ||
4870 | /* | |
4871 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4872 | */ | |
4873 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4874 | { | |
58d8948c | 4875 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, true); |
c581d8b0 MK |
4876 | } |
4877 | ||
4878 | /* | |
4879 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4880 | */ | |
4881 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4882 | { | |
ca337b46 SW |
4883 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, |
4884 | true); | |
c581d8b0 | 4885 | } |
128ea8ab | 4886 | |
f1f8b53c MK |
4887 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4888 | { | |
5e53dce3 | 4889 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4890 | struct listnode *node = NULL; |
4891 | struct bgpevpn *vpn = NULL; | |
4892 | ||
5e53dce3 T |
4893 | bgp_evpn = bgp_get_evpn(); |
4894 | if (!bgp_evpn) | |
f1f8b53c MK |
4895 | return; |
4896 | ||
4992b4ae MK |
4897 | /* update all type-5 routes */ |
4898 | update_advertise_vrf_routes(bgp_vrf); | |
4899 | ||
4900 | /* update all type-2 routes */ | |
f1f8b53c | 4901 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4902 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4903 | } |
4904 | ||
bf1061d8 VB |
4905 | /* |
4906 | * Handle autort change for a given VNI. | |
4907 | */ | |
e3b78da8 | 4908 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4909 | { |
e3b78da8 | 4910 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4911 | |
bf1061d8 VB |
4912 | if (!is_import_rt_configured(vpn)) { |
4913 | if (is_vni_live(vpn)) | |
4914 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4915 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4916 | list_delete_all_node(vpn->import_rtl); |
4917 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4918 | if (is_vni_live(vpn)) | |
4919 | bgp_evpn_install_routes(bgp, vpn); | |
4920 | } | |
4921 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4922 | list_delete_all_node(vpn->export_rtl); |
4923 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4924 | if (is_vni_live(vpn)) | |
4925 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4926 | } | |
4927 | } | |
4928 | ||
4204021e PG |
4929 | /* |
4930 | * Handle autort change for L3VNI. | |
4931 | */ | |
4932 | static void update_autort_l3vni(struct bgp *bgp) | |
4933 | { | |
4934 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4935 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4936 | return; | |
4937 | ||
4938 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4939 | if (is_l3vni_live(bgp)) | |
4940 | uninstall_routes_for_vrf(bgp); | |
4941 | ||
4942 | /* Cleanup the RT to VRF mapping */ | |
4943 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4944 | ||
4945 | /* Remove auto generated RT */ | |
4946 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4947 | ||
4948 | list_delete_all_node(bgp->vrf_import_rtl); | |
4949 | ||
4950 | /* Map auto derive or configured RTs */ | |
4951 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4952 | } | |
4953 | ||
4954 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4955 | list_delete_all_node(bgp->vrf_export_rtl); | |
4956 | ||
4957 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4958 | ||
4959 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4960 | ||
4961 | if (is_l3vni_live(bgp)) | |
4962 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4963 | } | |
4964 | ||
4965 | if (!is_l3vni_live(bgp)) | |
4966 | return; | |
4967 | ||
4968 | /* advertise type-5 routes if needed */ | |
4969 | update_advertise_vrf_routes(bgp); | |
4970 | ||
4971 | /* install all remote routes belonging to this l3vni | |
4972 | * into corresponding vrf | |
4973 | */ | |
4974 | install_routes_for_vrf(bgp); | |
4975 | } | |
4976 | ||
128ea8ab | 4977 | /* |
4978 | * Public functions. | |
4979 | */ | |
4980 | ||
5424b7ba | 4981 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4982 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4983 | afi_t afi, safi_t safi) |
4984 | { | |
4985 | int ret = 0; | |
4986 | struct prefix_evpn evp; | |
5424b7ba | 4987 | |
31310b25 | 4988 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4989 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4990 | if (ret) |
af4c2728 | 4991 | flog_err( |
e50f7cfd | 4992 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4993 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
4994 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4995 | } |
4996 | ||
342dd0c6 | 4997 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4998 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4999 | { |
5000 | struct bgp_table *table = NULL; | |
9bcb3eef | 5001 | struct bgp_dest *dest = NULL; |
40381db7 | 5002 | struct bgp_path_info *pi; |
342dd0c6 | 5003 | |
053905d2 | 5004 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5005 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 5006 | /* Only care about "selected" routes. Also ensure that |
5007 | * these are routes that are injectable into EVPN. | |
5008 | */ | |
25f2ca53 | 5009 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 5010 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5011 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5012 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 5013 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 5014 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 5015 | safi); |
25f2ca53 | 5016 | break; |
5017 | } | |
5018 | } | |
5019 | } | |
5424b7ba | 5020 | } |
342dd0c6 | 5021 | |
5fd9c12b KA |
5022 | /* |
5023 | * evpn - enable advertisement of default g/w | |
5024 | */ | |
5025 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
5026 | safi_t safi, bool add) | |
5027 | { | |
5028 | struct prefix ip_prefix; | |
5029 | ||
5030 | /* form the default prefix 0.0.0.0/0 */ | |
6006b807 | 5031 | memset(&ip_prefix, 0, sizeof(ip_prefix)); |
5fd9c12b KA |
5032 | ip_prefix.family = afi2family(afi); |
5033 | ||
5034 | if (add) { | |
5035 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
5036 | NULL, afi, safi); | |
5037 | } else { | |
5038 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
5039 | afi, safi); | |
5040 | } | |
5041 | } | |
5042 | ||
5043 | ||
2f69f6d3 | 5044 | /* |
5045 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
5046 | * to this function correspond to those of the source IP prefix (best | |
5047 | * path in the case of the attr. In the case of a local prefix (when we | |
5048 | * are advertising local subnets), the src_attr will be NULL. | |
5049 | */ | |
bd494ec5 | 5050 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
5051 | struct attr *src_attr, afi_t afi, |
5052 | safi_t safi) | |
5424b7ba MK |
5053 | { |
5054 | int ret = 0; | |
5055 | struct prefix_evpn evp; | |
7c82b312 | 5056 | |
31310b25 | 5057 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 5058 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 5059 | if (ret) |
e50f7cfd | 5060 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
5061 | "%u: Failed to create type-5 route for prefix %pFX", |
5062 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 5063 | } |
5064 | ||
2f69f6d3 | 5065 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
5066 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
5067 | * advertisement is enabled. | |
5068 | */ | |
996c9314 LB |
5069 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
5070 | safi_t safi) | |
342dd0c6 | 5071 | { |
5072 | struct bgp_table *table = NULL; | |
9bcb3eef | 5073 | struct bgp_dest *dest = NULL; |
40381db7 | 5074 | struct bgp_path_info *pi; |
342dd0c6 | 5075 | |
053905d2 | 5076 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5077 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 5078 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 5079 | * attribute. Also, ensure that the route is injectable |
5080 | * into EVPN. | |
2f69f6d3 | 5081 | * TODO: Support for AddPath for EVPN. |
5082 | */ | |
9bcb3eef | 5083 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5084 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5085 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
5086 | |
5087 | /* apply the route-map */ | |
5088 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 5089 | route_map_result_t ret; |
e34291b8 | 5090 | struct bgp_path_info tmp_pi; |
5091 | struct bgp_path_info_extra tmp_pie; | |
5092 | struct attr tmp_attr; | |
5093 | ||
5094 | tmp_attr = *pi->attr; | |
5095 | ||
5096 | /* Fill temp path_info */ | |
9bcb3eef DS |
5097 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
5098 | dest, pi, pi->peer, | |
5099 | &tmp_attr); | |
e34291b8 | 5100 | |
5101 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 5102 | |
996c9314 LB |
5103 | ret = route_map_apply( |
5104 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
5105 | .map, | |
9bcb3eef | 5106 | bgp_dest_get_prefix(dest), |
1782514f | 5107 | &tmp_pi); |
e34291b8 | 5108 | if (ret == RMAP_DENYMATCH) { |
5109 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 5110 | continue; |
e34291b8 | 5111 | } |
5112 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5113 | bgp_vrf, |
9bcb3eef | 5114 | bgp_dest_get_prefix(dest), |
b54892e0 | 5115 | &tmp_attr, afi, safi); |
e34291b8 | 5116 | } else |
5117 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5118 | bgp_vrf, |
9bcb3eef | 5119 | bgp_dest_get_prefix(dest), |
b54892e0 | 5120 | pi->attr, afi, safi); |
2f69f6d3 | 5121 | break; |
5122 | } | |
5123 | } | |
31310b25 | 5124 | } |
342dd0c6 | 5125 | } |
5126 | ||
ca337b46 SW |
5127 | static void rt_list_remove_node(struct list *rt_list, |
5128 | struct ecommunity *ecomdel, bool is_l3) | |
c581d8b0 | 5129 | { |
ca337b46 SW |
5130 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; |
5131 | struct vrf_route_target *l3rt = NULL; | |
5132 | struct ecommunity *ecom = NULL; | |
5133 | ||
ca337b46 SW |
5134 | if (is_l3) { |
5135 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5136 | if (ecommunity_match(l3rt->ecom, ecomdel)) { | |
5137 | evpn_vrf_rt_del(l3rt); | |
5138 | node_to_del = node; | |
5139 | break; | |
5140 | } | |
5141 | } | |
5142 | } else { | |
5143 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, ecom)) { | |
5144 | if (ecommunity_match(ecom, ecomdel)) { | |
5145 | ecommunity_free(&ecom); | |
5146 | node_to_del = node; | |
5147 | break; | |
5148 | } | |
5149 | } | |
5150 | } | |
5151 | ||
58d8948c | 5152 | |
ca337b46 SW |
5153 | if (node_to_del) |
5154 | list_delete_node(rt_list, node_to_del); | |
5155 | } | |
5156 | ||
5157 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl, | |
5158 | bool is_l3) | |
5159 | { | |
5160 | struct ecommunity *ecom_auto; | |
c581d8b0 MK |
5161 | struct ecommunity_val eval; |
5162 | ||
bf1061d8 VB |
5163 | if (bgp->advertise_autort_rfc8365) |
5164 | vni |= EVPN_AUTORT_VXLAN; | |
58d8948c | 5165 | |
8f2a51b7 | 5166 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval, true); |
c581d8b0 MK |
5167 | |
5168 | ecom_auto = ecommunity_new(); | |
1207a5bc | 5169 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 | 5170 | |
ca337b46 | 5171 | rt_list_remove_node(rtl, ecom_auto, is_l3); |
c581d8b0 MK |
5172 | |
5173 | ecommunity_free(&ecom_auto); | |
5174 | } | |
5175 | ||
58d8948c | 5176 | static void evpn_vrf_rt_routes_map(struct bgp *bgp_vrf) |
c581d8b0 | 5177 | { |
58d8948c SW |
5178 | /* map VRFs to its RTs and install routes matching this new RT */ |
5179 | if (is_l3vni_live(bgp_vrf)) { | |
5180 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5181 | install_routes_for_vrf(bgp_vrf); | |
5182 | } | |
5183 | } | |
ca337b46 | 5184 | |
58d8948c | 5185 | static void evpn_vrf_rt_routes_unmap(struct bgp *bgp_vrf) |
c581d8b0 | 5186 | { |
5ba238b7 | 5187 | /* uninstall routes from vrf */ |
3d0b43d7 | 5188 | if (is_l3vni_live(bgp_vrf)) |
5189 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
5190 | |
5191 | /* Cleanup the RT to VRF mapping */ | |
5192 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
58d8948c | 5193 | } |
10ebe1ab | 5194 | |
58d8948c SW |
5195 | static bool rt_list_has_cfgd_rt(struct list *rt_list) |
5196 | { | |
5197 | struct listnode *node = NULL, *nnode = NULL; | |
5198 | struct vrf_route_target *l3rt = NULL; | |
5199 | ||
5200 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5201 | if (!CHECK_FLAG(l3rt->flags, BGP_VRF_RT_AUTO)) | |
5202 | return true; | |
5203 | } | |
5204 | ||
5205 | return false; | |
5206 | } | |
5207 | ||
5208 | static void unconfigure_import_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5209 | { | |
5210 | if (!bgp_vrf->vrf_import_rtl) | |
5211 | return; /* this should never fail */ | |
5212 | ||
5213 | if (!is_l3vni_live(bgp_vrf)) | |
5214 | return; /* Nothing to do if no vni */ | |
5215 | ||
5216 | /* fall back to auto-generated RT if this was the last RT */ | |
5217 | if (list_isempty(bgp_vrf->vrf_import_rtl)) | |
5218 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5219 | } | |
5220 | ||
5221 | static void unconfigure_export_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5222 | { | |
5223 | ||
5224 | if (!bgp_vrf->vrf_export_rtl) | |
5225 | return; /* this should never fail */ | |
5226 | ||
5227 | if (!is_l3vni_live(bgp_vrf)) | |
5228 | return; /* Nothing to do if no vni */ | |
5229 | ||
5230 | /* fall back to auto-generated RT if this was the last RT */ | |
5231 | if (list_isempty(bgp_vrf->vrf_export_rtl)) | |
5232 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5233 | ||
5234 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5235 | } | |
5236 | ||
5237 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5238 | struct ecommunity *ecomadd, | |
5239 | bool is_wildcard) | |
5240 | { | |
5241 | struct vrf_route_target *newrt; | |
5242 | ||
5243 | newrt = evpn_vrf_rt_new(ecomadd); | |
5244 | ||
5245 | if (is_wildcard) | |
5246 | SET_FLAG(newrt->flags, BGP_VRF_RT_WILD); | |
5247 | ||
5248 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5249 | ||
5250 | /* Remove auto generated RT if not configured */ | |
5251 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5252 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5253 | |
5254 | /* Add the newly configured RT to RT list */ | |
ca337b46 | 5255 | listnode_add_sort(bgp_vrf->vrf_import_rtl, newrt); |
58d8948c | 5256 | |
c581d8b0 MK |
5257 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
5258 | ||
58d8948c SW |
5259 | evpn_vrf_rt_routes_map(bgp_vrf); |
5260 | } | |
5261 | ||
5262 | void bgp_evpn_configure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) | |
5263 | { | |
5264 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5265 | return; /* Already configured */ | |
5266 | ||
5267 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5268 | ||
5269 | if (!is_l3vni_live(bgp_vrf)) | |
5270 | return; /* Wait for VNI before adding rts */ | |
5271 | ||
5272 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5273 | ||
5274 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5275 | ||
5276 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5277 | } |
5278 | ||
5279 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5280 | struct ecommunity *ecomdel) | |
5281 | { | |
58d8948c SW |
5282 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5283 | return; /* Already un-configured */ | |
c581d8b0 | 5284 | |
58d8948c | 5285 | evpn_vrf_rt_routes_unmap(bgp_vrf); |
10ebe1ab | 5286 | |
ca337b46 SW |
5287 | /* Remove rt */ |
5288 | rt_list_remove_node(bgp_vrf->vrf_import_rtl, ecomdel, true); | |
10ebe1ab | 5289 | |
58d8948c | 5290 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_import_rtl)) |
c581d8b0 | 5291 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
c581d8b0 | 5292 | |
58d8948c | 5293 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); |
c581d8b0 | 5294 | |
58d8948c SW |
5295 | evpn_vrf_rt_routes_map(bgp_vrf); |
5296 | } | |
c581d8b0 | 5297 | |
58d8948c SW |
5298 | void bgp_evpn_unconfigure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5299 | { | |
5300 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5301 | return; /* Already un-configured */ | |
5302 | ||
5303 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5304 | ||
5305 | /* remove auto-generated RT */ | |
5306 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
5307 | ||
5308 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5309 | ||
5310 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); | |
5311 | ||
5312 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5313 | } |
5314 | ||
5315 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
5316 | struct ecommunity *ecomadd) | |
5317 | { | |
ca337b46 SW |
5318 | struct vrf_route_target *newrt; |
5319 | ||
5320 | newrt = evpn_vrf_rt_new(ecomadd); | |
5321 | ||
58d8948c SW |
5322 | /* Remove auto generated RT if not configured */ |
5323 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5324 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5325 | |
5326 | /* Add the new RT to the RT list */ | |
ca337b46 | 5327 | listnode_add_sort(bgp_vrf->vrf_export_rtl, newrt); |
58d8948c | 5328 | |
c581d8b0 MK |
5329 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
5330 | ||
ebdc9e64 AD |
5331 | if (is_l3vni_live(bgp_vrf)) |
5332 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5333 | } |
5334 | ||
58d8948c SW |
5335 | void bgp_evpn_configure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5336 | { | |
5337 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5338 | return; /* Already configured */ | |
5339 | ||
5340 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5341 | ||
5342 | if (!is_l3vni_live(bgp_vrf)) | |
5343 | return; /* Wait for VNI before adding rts */ | |
5344 | ||
5345 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5346 | ||
5347 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5348 | } | |
5349 | ||
c581d8b0 MK |
5350 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, |
5351 | struct ecommunity *ecomdel) | |
5352 | { | |
58d8948c SW |
5353 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5354 | return; /* Already un-configured */ | |
c581d8b0 | 5355 | |
ca337b46 SW |
5356 | /* Remove rt */ |
5357 | rt_list_remove_node(bgp_vrf->vrf_export_rtl, ecomdel, true); | |
c581d8b0 | 5358 | |
58d8948c | 5359 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_export_rtl)) |
c581d8b0 | 5360 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
c581d8b0 | 5361 | |
58d8948c SW |
5362 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); |
5363 | } | |
1525e99f | 5364 | |
58d8948c SW |
5365 | void bgp_evpn_unconfigure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5366 | { | |
5367 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5368 | return; /* Already un-configured */ | |
c581d8b0 | 5369 | |
58d8948c SW |
5370 | /* remove auto-generated RT */ |
5371 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
5372 | ||
5373 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5374 | ||
5375 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); | |
c581d8b0 MK |
5376 | } |
5377 | ||
2d48ee25 | 5378 | /* |
5379 | * Handle change to BGP router id. This is invoked twice by the change | |
5380 | * handler, first before the router id has been changed and then after | |
5381 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 5382 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 5383 | * will result in the routes being re-advertised. |
5384 | */ | |
d62a17ae | 5385 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 5386 | { |
5394a276 CS |
5387 | struct listnode *node; |
5388 | struct bgp *bgp_vrf; | |
5389 | ||
676f83b9 | 5390 | if (withdraw) { |
5391 | ||
5392 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 5393 | stored in the global table for this vrf |
5394 | */ | |
80b140af | 5395 | withdraw_router_id_vrf(bgp); |
676f83b9 | 5396 | |
5397 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 5398 | * L2-VNIs |
5399 | */ | |
d62a17ae | 5400 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5401 | (void (*)(struct hash_bucket *, |
d62a17ae | 5402 | void *))withdraw_router_id_vni, |
5403 | bgp); | |
5394a276 CS |
5404 | |
5405 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5406 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5407 | if (bgp_vrf->evpn_info->advertise_pip && | |
5408 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5409 | == INADDR_ANY)) | |
5410 | bgp_vrf->evpn_info->pip_ip.s_addr | |
5411 | = INADDR_ANY; | |
5412 | } | |
5413 | } | |
676f83b9 | 5414 | } else { |
5415 | ||
5394a276 CS |
5416 | /* Assign new default instance router-id */ |
5417 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5418 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5419 | if (bgp_vrf->evpn_info->advertise_pip && | |
5420 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5421 | == INADDR_ANY)) { | |
5422 | bgp_vrf->evpn_info->pip_ip = | |
5423 | bgp->router_id; | |
5424 | /* advertise type-5 routes with | |
5425 | * new nexthop | |
5426 | */ | |
5427 | update_advertise_vrf_routes(bgp_vrf); | |
5428 | } | |
5429 | } | |
5430 | } | |
5431 | ||
676f83b9 | 5432 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 5433 | * RD |
5434 | */ | |
80b140af | 5435 | update_router_id_vrf(bgp); |
676f83b9 | 5436 | |
5437 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 5438 | * new RD |
5439 | */ | |
d62a17ae | 5440 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5441 | (void (*)(struct hash_bucket *, |
d62a17ae | 5442 | void *))update_router_id_vni, |
5443 | bgp); | |
676f83b9 | 5444 | } |
2d48ee25 | 5445 | } |
5446 | ||
bf1061d8 VB |
5447 | /* |
5448 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
5449 | */ | |
5450 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
5451 | { | |
5452 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 5453 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
5454 | void*))update_autort_vni, |
5455 | bgp); | |
4204021e PG |
5456 | if (bgp->l3vni) |
5457 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
5458 | } |
5459 | ||
90e60aa7 | 5460 | /* |
5461 | * Handle change to export RT - update and advertise local routes. | |
5462 | */ | |
d62a17ae | 5463 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5464 | { |
d62a17ae | 5465 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 5466 | } |
5467 | ||
996c9314 | 5468 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 5469 | { |
5470 | if (withdraw) | |
5471 | delete_withdraw_vrf_routes(bgp_vrf); | |
5472 | else | |
5473 | update_advertise_vrf_routes(bgp_vrf); | |
5474 | } | |
5475 | ||
90e60aa7 | 5476 | /* |
5477 | * Handle change to RD. This is invoked twice by the change handler, | |
5478 | * first before the RD has been changed and then after the RD has | |
5479 | * been changed. The first invocation will result in local routes | |
5480 | * of this VNI being deleted and withdrawn and the next will result | |
5481 | * in the routes being re-advertised. | |
5482 | */ | |
d62a17ae | 5483 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
5484 | int withdraw) | |
90e60aa7 | 5485 | { |
d62a17ae | 5486 | if (withdraw) |
5487 | delete_withdraw_vni_routes(bgp, vpn); | |
5488 | else | |
5489 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 5490 | } |
5491 | ||
5492 | /* | |
5493 | * Install routes for this VNI. Invoked upon change to Import RT. | |
5494 | */ | |
d62a17ae | 5495 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5496 | { |
d62a17ae | 5497 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 5498 | } |
5499 | ||
5500 | /* | |
5501 | * Uninstall all routes installed for this VNI. Invoked upon change | |
5502 | * to Import RT. | |
5503 | */ | |
d62a17ae | 5504 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5505 | { |
d62a17ae | 5506 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 5507 | } |
5508 | ||
b16031a2 | 5509 | /* |
b57ba6d2 | 5510 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 5511 | */ |
d7c0a89a | 5512 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 5513 | int len) |
b16031a2 | 5514 | { |
b57ba6d2 | 5515 | vni_t vni1, vni2; |
b16031a2 | 5516 | |
b57ba6d2 MK |
5517 | vni1 = label2vni(label); |
5518 | if (num_labels == 2) { | |
996c9314 | 5519 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
5520 | snprintf(buf, len, "%u/%u", vni1, vni2); |
5521 | } else | |
5522 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 5523 | return buf; |
b16031a2 | 5524 | } |
5525 | ||
9c92b5f7 MK |
5526 | /* |
5527 | * Function to convert evpn route to json format. | |
5528 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
5529 | */ | |
bd494ec5 | 5530 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 5531 | { |
b682f6de | 5532 | char buf1[ETHER_ADDR_STRLEN]; |
5533 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
5534 | uint8_t family; |
5535 | uint8_t prefixlen; | |
9c92b5f7 | 5536 | |
b682f6de | 5537 | if (!json) |
5538 | return; | |
9c92b5f7 | 5539 | |
44c69747 LK |
5540 | json_object_int_add(json, "routeType", p->prefix.route_type); |
5541 | ||
5542 | switch (p->prefix.route_type) { | |
5543 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5544 | json_object_int_add(json, "ethTag", |
44c69747 LK |
5545 | p->prefix.macip_addr.eth_tag); |
5546 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
5547 | json_object_string_add(json, "mac", | |
5548 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
5549 | sizeof(buf1))); | |
5550 | ||
5551 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
5552 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
5553 | AF_INET6; | |
5554 | prefixlen = (family == AF_INET) ? | |
5555 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
5556 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
5557 | buf2, PREFIX2STR_BUFFER); | |
5558 | json_object_int_add(json, "ipLen", prefixlen); | |
5559 | json_object_string_add(json, "ip", buf2); | |
5560 | } | |
5561 | break; | |
dff8f48d | 5562 | |
44c69747 LK |
5563 | case BGP_EVPN_IMET_ROUTE: |
5564 | json_object_int_add(json, "ethTag", | |
5565 | p->prefix.imet_addr.eth_tag); | |
5566 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5567 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
5568 | IPV6_MAX_BITLEN; | |
5569 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
5570 | PREFIX2STR_BUFFER); | |
5571 | json_object_int_add(json, "ipLen", prefixlen); | |
5572 | json_object_string_add(json, "ip", buf2); | |
5573 | break; | |
dff8f48d | 5574 | |
44c69747 LK |
5575 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5576 | json_object_int_add(json, "ethTag", | |
5577 | p->prefix.prefix_addr.eth_tag); | |
5578 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5579 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
5580 | buf2, sizeof(buf2)); | |
5581 | json_object_int_add(json, "ipLen", | |
5582 | p->prefix.prefix_addr.ip_prefix_length); | |
5583 | json_object_string_add(json, "ip", buf2); | |
5584 | break; | |
5585 | ||
5586 | default: | |
5587 | break; | |
dff8f48d | 5588 | } |
9c92b5f7 MK |
5589 | } |
5590 | ||
128ea8ab | 5591 | /* |
5592 | * Encode EVPN prefix in Update (MP_REACH) | |
5593 | */ | |
5f040085 DS |
5594 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5595 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 5596 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 5597 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 5598 | { |
5599 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5600 | int len, ipa_len = 0; |
d62a17ae | 5601 | |
be92fc9f | 5602 | if (addpath_capable) |
d62a17ae | 5603 | stream_putl(s, addpath_tx_id); |
5604 | ||
5605 | /* Route type */ | |
5606 | stream_putc(s, evp->prefix.route_type); | |
5607 | ||
5608 | switch (evp->prefix.route_type) { | |
5609 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5610 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5611 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5612 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5613 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5614 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5615 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5616 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5617 | len += 3; | |
5618 | stream_putc(s, len); | |
996c9314 | 5619 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 5620 | if (attr) |
c44ab6f1 | 5621 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
5622 | else |
5623 | stream_put(s, 0, 10); | |
3714a385 | 5624 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5625 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5626 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5627 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5628 | if (ipa_len) /* IP */ | |
5629 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5630 | ipa_len); | |
b57ba6d2 MK |
5631 | /* 1st label is the L2 VNI */ |
5632 | stream_put(s, label, BGP_LABEL_BYTES); | |
5633 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5634 | if (ipa_len && num_labels > 1) | |
996c9314 | 5635 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5636 | break; |
5637 | ||
5638 | case BGP_EVPN_IMET_ROUTE: | |
5639 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5640 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5641 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5642 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5643 | /* Originating Router's IP Addr */ | |
3714a385 | 5644 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5645 | break; |
5646 | ||
50f74cf1 | 5647 | case BGP_EVPN_ES_ROUTE: |
5648 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5649 | stream_put(s, prd->val, 8); /* RD */ | |
5650 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5651 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5652 | /* VTEP IP */ |
5653 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5654 | break; |
5655 | ||
c44ab6f1 AK |
5656 | case BGP_EVPN_AD_ROUTE: |
5657 | /* RD, ESI, EthTag, 1 VNI */ | |
5658 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
5659 | stream_putc(s, len); | |
5660 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
5661 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
5662 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
5663 | stream_put(s, label, BGP_LABEL_BYTES); | |
5664 | break; | |
5665 | ||
d62a17ae | 5666 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5667 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5668 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5669 | break; |
5670 | ||
5671 | default: | |
5672 | break; | |
5673 | } | |
5674 | } | |
5675 | ||
5676 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
aa056a2a | 5677 | struct bgp_nlri *packet, bool withdraw) |
d62a17ae | 5678 | { |
d7c0a89a QY |
5679 | uint8_t *pnt; |
5680 | uint8_t *lim; | |
d62a17ae | 5681 | afi_t afi; |
5682 | safi_t safi; | |
d7c0a89a | 5683 | uint32_t addpath_id; |
be92fc9f | 5684 | bool addpath_capable; |
d62a17ae | 5685 | int psize = 0; |
d7c0a89a | 5686 | uint8_t rtype; |
d62a17ae | 5687 | struct prefix p; |
5688 | ||
d62a17ae | 5689 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5690 | pnt = packet->nlri; | |
5691 | lim = pnt + packet->length; | |
5692 | afi = packet->afi; | |
5693 | safi = packet->safi; | |
5694 | addpath_id = 0; | |
5695 | ||
be92fc9f | 5696 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 5697 | |
5698 | for (; pnt < lim; pnt += psize) { | |
5699 | /* Clear prefix structure. */ | |
6006b807 | 5700 | memset(&p, 0, sizeof(p)); |
d62a17ae | 5701 | |
5702 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 5703 | if (addpath_capable) { |
d62a17ae | 5704 | /* When packet overflow occurs return immediately. */ |
5705 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5706 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5707 | |
a3a850a1 S |
5708 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5709 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5710 | pnt += BGP_ADDPATH_ID_LEN; |
5711 | } | |
5712 | ||
5713 | /* All EVPN NLRI types start with type and length. */ | |
5714 | if (pnt + 2 > lim) | |
513386b5 | 5715 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5716 | |
5717 | rtype = *pnt++; | |
3f54c705 | 5718 | psize = *pnt++; |
d62a17ae | 5719 | |
5720 | /* When packet overflow occur return immediately. */ | |
5721 | if (pnt + psize > lim) | |
513386b5 | 5722 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5723 | |
5724 | switch (rtype) { | |
5725 | case BGP_EVPN_MAC_IP_ROUTE: | |
5726 | if (process_type2_route(peer, afi, safi, | |
5727 | withdraw ? NULL : attr, pnt, | |
5728 | psize, addpath_id)) { | |
af4c2728 | 5729 | flog_err( |
e50f7cfd | 5730 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5731 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5732 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5733 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5734 | } |
5735 | break; | |
5736 | ||
5737 | case BGP_EVPN_IMET_ROUTE: | |
5738 | if (process_type3_route(peer, afi, safi, | |
5739 | withdraw ? NULL : attr, pnt, | |
5740 | psize, addpath_id)) { | |
af4c2728 | 5741 | flog_err( |
e50f7cfd | 5742 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5743 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5744 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5745 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5746 | } |
5747 | break; | |
5748 | ||
50f74cf1 | 5749 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5750 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5751 | withdraw ? NULL : attr, pnt, |
5752 | psize, addpath_id)) { | |
af4c2728 | 5753 | flog_err( |
e50f7cfd | 5754 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5755 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5756 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5757 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5758 | } |
5759 | break; | |
5760 | ||
c44ab6f1 AK |
5761 | case BGP_EVPN_AD_ROUTE: |
5762 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5763 | withdraw ? NULL : attr, pnt, | |
5764 | psize, addpath_id)) { | |
5765 | flog_err( | |
5766 | EC_BGP_PKT_PROCESS, | |
5767 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5768 | peer->bgp->vrf_id, peer->host, psize); | |
5769 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5770 | } | |
5771 | break; | |
5772 | ||
d62a17ae | 5773 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5774 | if (process_type5_route(peer, afi, safi, |
5775 | withdraw ? NULL : attr, pnt, | |
5776 | psize, addpath_id)) { | |
af4c2728 | 5777 | flog_err( |
e50f7cfd | 5778 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5779 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5780 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5781 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5782 | } |
5783 | break; | |
5784 | ||
5785 | default: | |
5786 | break; | |
5787 | } | |
5788 | } | |
5789 | ||
5790 | /* Packet length consistency check. */ | |
5791 | if (pnt != lim) | |
513386b5 | 5792 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5793 | |
513386b5 | 5794 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5795 | } |
5796 | ||
10ebe1ab MK |
5797 | /* |
5798 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5799 | * The mapping will be used during route processing. | |
10ebe1ab MK |
5800 | * bgp_vrf: specific bgp vrf instance on which RT is configured |
5801 | */ | |
5802 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5803 | { | |
58d8948c | 5804 | struct listnode *node, *nnode; |
ca337b46 | 5805 | struct vrf_route_target *l3rt; |
10ebe1ab | 5806 | |
58d8948c SW |
5807 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5808 | map_vrf_to_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5809 | } |
5810 | ||
5811 | /* | |
5812 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5813 | */ | |
5814 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5815 | { | |
10ebe1ab | 5816 | struct listnode *node, *nnode; |
ca337b46 | 5817 | struct vrf_route_target *l3rt; |
10ebe1ab | 5818 | |
58d8948c SW |
5819 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5820 | unmap_vrf_from_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5821 | } |
5822 | ||
128ea8ab | 5823 | /* |
5824 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5825 | * The mapping will be used during route processing. | |
5826 | */ | |
d62a17ae | 5827 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5828 | { |
f6e07e1b | 5829 | uint32_t i; |
d62a17ae | 5830 | struct ecommunity_val *eval; |
5831 | struct listnode *node, *nnode; | |
5832 | struct ecommunity *ecom; | |
128ea8ab | 5833 | |
d62a17ae | 5834 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5835 | for (i = 0; i < ecom->size; i++) { | |
5836 | eval = (struct ecommunity_val *)(ecom->val | |
5837 | + (i | |
5838 | * ECOMMUNITY_SIZE)); | |
5839 | map_vni_to_rt(bgp, vpn, eval); | |
5840 | } | |
5841 | } | |
128ea8ab | 5842 | } |
5843 | ||
5844 | /* | |
5845 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5846 | */ | |
d62a17ae | 5847 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5848 | { |
f6e07e1b | 5849 | uint32_t i; |
d62a17ae | 5850 | struct ecommunity_val *eval; |
5851 | struct listnode *node, *nnode; | |
5852 | struct ecommunity *ecom; | |
128ea8ab | 5853 | |
d62a17ae | 5854 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5855 | for (i = 0; i < ecom->size; i++) { | |
5856 | struct irt_node *irt; | |
5857 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5858 | |
d62a17ae | 5859 | eval = (struct ecommunity_val *)(ecom->val |
5860 | + (i | |
5861 | * ECOMMUNITY_SIZE)); | |
5862 | /* If using "automatic" RT, we only care about the | |
5863 | * local-admin sub-field. | |
5864 | * This is to facilitate using VNI as the RT for EBGP | |
5865 | * peering too. | |
5866 | */ | |
5867 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5868 | if (!is_import_rt_configured(vpn)) | |
5869 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5870 | |
d62a17ae | 5871 | irt = lookup_import_rt(bgp, &eval_tmp); |
5872 | if (irt) | |
5873 | unmap_vni_from_rt(bgp, vpn, irt); | |
5874 | } | |
5875 | } | |
128ea8ab | 5876 | } |
5877 | ||
5878 | /* | |
5879 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5880 | * The mapping will be used during route processing. | |
5881 | */ | |
d62a17ae | 5882 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5883 | { |
58d8948c | 5884 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl, false); |
d62a17ae | 5885 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5886 | |
d62a17ae | 5887 | /* Map RT to VNI */ |
5888 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5889 | } |
5890 | ||
5891 | /* | |
5892 | * Derive Export RT automatically for VNI. | |
5893 | */ | |
d62a17ae | 5894 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5895 | { |
58d8948c | 5896 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl, false); |
d62a17ae | 5897 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5898 | } |
5899 | ||
676f83b9 | 5900 | /* |
5901 | * Derive RD automatically for VNI using passed information - it | |
5902 | * is of the form RouterId:unique-id-for-vni. | |
5903 | */ | |
5904 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5905 | { | |
9e97ff03 CS |
5906 | if (is_vrf_rd_configured(bgp)) |
5907 | return; | |
5908 | ||
92708db6 | 5909 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5910 | } |
5911 | ||
128ea8ab | 5912 | /* |
5913 | * Derive RD automatically for VNI using passed information - it | |
5914 | * is of the form RouterId:unique-id-for-vni. | |
5915 | */ | |
d62a17ae | 5916 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5917 | { |
c44ab6f1 | 5918 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5919 | |
d62a17ae | 5920 | vpn->prd.family = AF_UNSPEC; |
5921 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5922 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5923 | (void)str2prefix_rd(buf, &vpn->prd); |
fa566a94 PG |
5924 | if (vpn->prd_pretty) |
5925 | XFREE(MTYPE_BGP, vpn->prd_pretty); | |
d62a17ae | 5926 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5927 | } |
5928 | ||
7df407ed CS |
5929 | /* |
5930 | * Lookup L3-VNI | |
5931 | */ | |
5932 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5933 | { | |
5934 | struct list *inst = bm->bgp; | |
5935 | struct listnode *node; | |
5936 | struct bgp *bgp_vrf; | |
5937 | ||
5938 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5939 | if (bgp_vrf->l3vni == vni) | |
5940 | return true; | |
5941 | } | |
5942 | ||
5943 | return false; | |
5944 | } | |
5945 | ||
128ea8ab | 5946 | /* |
5947 | * Lookup VNI. | |
5948 | */ | |
d62a17ae | 5949 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5950 | { |
d62a17ae | 5951 | struct bgpevpn *vpn; |
5952 | struct bgpevpn tmp; | |
128ea8ab | 5953 | |
6006b807 | 5954 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 5955 | tmp.vni = vni; |
5956 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5957 | return vpn; | |
128ea8ab | 5958 | } |
5959 | ||
5960 | /* | |
5961 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5962 | */ | |
d62a17ae | 5963 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5964 | struct in_addr originator_ip, |
5965 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5966 | struct in_addr mcast_grp, |
5967 | ifindex_t svi_ifindex) | |
128ea8ab | 5968 | { |
d62a17ae | 5969 | struct bgpevpn *vpn; |
128ea8ab | 5970 | |
d62a17ae | 5971 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5972 | |
d62a17ae | 5973 | /* Set values - RD and RT set to defaults. */ |
5974 | vpn->vni = vni; | |
5975 | vpn->originator_ip = originator_ip; | |
29c53922 | 5976 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5977 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5978 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5979 | |
d62a17ae | 5980 | /* Initialize route-target import and export lists */ |
5981 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5982 | vpn->import_rtl->cmp = |
5983 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5984 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5985 | vpn->export_rtl = list_new(); |
f4a5218d AK |
5986 | vpn->export_rtl->cmp = |
5987 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5988 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 5989 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5990 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5991 | |
852d9f97 SW |
5992 | /* Initialize EVPN route tables. */ |
5993 | vpn->ip_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5994 | vpn->mac_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
128ea8ab | 5995 | |
d62a17ae | 5996 | /* Add to hash */ |
ac390ef8 | 5997 | (void)hash_get(bgp->vnihash, vpn, hash_alloc_intern); |
6a8657d0 | 5998 | |
021b6596 AD |
5999 | bgp_evpn_remote_ip_hash_init(vpn); |
6000 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6001 | ||
6a8657d0 MK |
6002 | /* add to l2vni list on corresponding vrf */ |
6003 | bgpevpn_link_to_l3vni(vpn); | |
6004 | ||
c44ab6f1 AK |
6005 | bgp_evpn_vni_es_init(vpn); |
6006 | ||
d62a17ae | 6007 | QOBJ_REG(vpn, bgpevpn); |
6008 | return vpn; | |
128ea8ab | 6009 | } |
6010 | ||
6011 | /* | |
6012 | * Free a given VPN - called in multiple scenarios such as zebra | |
6013 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
6014 | * This just frees appropriate memory, caller should have taken other | |
6015 | * needed actions. | |
6016 | */ | |
d62a17ae | 6017 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 6018 | { |
021b6596 | 6019 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 6020 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 6021 | bgpevpn_unlink_from_l3vni(vpn); |
852d9f97 SW |
6022 | bgp_table_unlock(vpn->ip_table); |
6023 | bgp_table_unlock(vpn->mac_table); | |
d62a17ae | 6024 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); |
6a154c88 DL |
6025 | list_delete(&vpn->import_rtl); |
6026 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 6027 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 6028 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 6029 | hash_release(bgp->vnihash, vpn); |
fa566a94 PG |
6030 | if (vpn->prd_pretty) |
6031 | XFREE(MTYPE_BGP, vpn->prd_pretty); | |
d62a17ae | 6032 | QOBJ_UNREG(vpn); |
6033 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 6034 | } |
6035 | ||
3727e359 DA |
6036 | static void hash_evpn_free(struct bgpevpn *vpn) |
6037 | { | |
6038 | XFREE(MTYPE_BGP_EVPN, vpn); | |
6039 | } | |
6040 | ||
50f74cf1 | 6041 | /* |
6042 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 6043 | */ |
d62a17ae | 6044 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6045 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6046 | { |
40381db7 | 6047 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 6048 | } |
6049 | ||
6050 | /* | |
50f74cf1 | 6051 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 6052 | */ |
d62a17ae | 6053 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6054 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6055 | { |
40381db7 | 6056 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 6057 | } |
6058 | ||
db0e1937 MK |
6059 | /* filter routes which have martian next hops */ |
6060 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
6061 | { | |
0291c246 MK |
6062 | afi_t afi; |
6063 | safi_t safi; | |
9bcb3eef | 6064 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 6065 | struct bgp_table *table; |
40381db7 | 6066 | struct bgp_path_info *pi; |
db0e1937 MK |
6067 | |
6068 | afi = AFI_L2VPN; | |
6069 | safi = SAFI_EVPN; | |
6070 | ||
6071 | /* Walk entire global routing table and evaluate routes which could be | |
6072 | * imported into this VPN. Note that we cannot just look at the routes | |
6073 | * for the VNI's RD - | |
6074 | * remote routes applicable for this VNI could have any RD. | |
6075 | */ | |
6076 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
6077 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
6078 | rd_dest = bgp_route_next(rd_dest)) { | |
6079 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
6080 | if (!table) |
6081 | continue; | |
6082 | ||
9bcb3eef DS |
6083 | for (dest = bgp_table_top(table); dest; |
6084 | dest = bgp_route_next(dest)) { | |
db0e1937 | 6085 | |
9bcb3eef | 6086 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 6087 | pi = pi->next) { |
db0e1937 MK |
6088 | |
6089 | /* Consider "valid" remote routes applicable for | |
6090 | * this VNI. */ | |
40381db7 DS |
6091 | if (!(pi->type == ZEBRA_ROUTE_BGP |
6092 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 6093 | continue; |
9bcb3eef DS |
6094 | if (bgp_nexthop_self(bgp, afi, pi->type, |
6095 | pi->sub_type, pi->attr, | |
6096 | dest)) { | |
b54892e0 | 6097 | const struct prefix *p = |
9bcb3eef | 6098 | bgp_dest_get_prefix(dest); |
db0e1937 | 6099 | |
b54892e0 DS |
6100 | if (bgp_debug_update(pi->peer, p, NULL, |
6101 | 1)) { | |
6102 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 6103 | |
b54892e0 | 6104 | bgp_dump_attr(pi->attr, |
5022c833 DA |
6105 | attr_str, |
6106 | sizeof(attr_str)); | |
db0e1937 | 6107 | |
db0e1937 | 6108 | zlog_debug( |
56ca3b5b | 6109 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 6110 | bgp->vrf_id, dest, |
db0e1937 | 6111 | attr_str); |
b54892e0 | 6112 | } |
db0e1937 | 6113 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 6114 | p, pi); |
db0e1937 | 6115 | |
9bcb3eef | 6116 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 6117 | safi); |
db0e1937 | 6118 | } |
db0e1937 MK |
6119 | } |
6120 | } | |
6121 | } | |
6122 | ||
6123 | return 0; | |
6124 | } | |
6125 | ||
128ea8ab | 6126 | /* |
6127 | * Handle del of a local MACIP. | |
6128 | */ | |
d62a17ae | 6129 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 6130 | struct ipaddr *ip, int state) |
128ea8ab | 6131 | { |
d62a17ae | 6132 | struct bgpevpn *vpn; |
6133 | struct prefix_evpn p; | |
9bcb3eef | 6134 | struct bgp_dest *dest; |
128ea8ab | 6135 | |
d62a17ae | 6136 | /* Lookup VNI hash - should exist. */ |
6137 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6138 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6139 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6140 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 6141 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6142 | return -1; | |
6143 | } | |
128ea8ab | 6144 | |
d62a17ae | 6145 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
6146 | if (state == ZEBRA_NEIGH_ACTIVE) { |
6147 | /* Remove EVPN type-2 route and schedule for processing. */ | |
6148 | delete_evpn_route(bgp, vpn, &p); | |
6149 | } else { | |
6150 | /* Re-instate the current remote best path if any */ | |
852d9f97 | 6151 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
e71ad4b6 | 6152 | if (dest) { |
9bcb3eef | 6153 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
6154 | bgp_dest_unlock_node(dest); |
6155 | } | |
ec0ab544 | 6156 | } |
128ea8ab | 6157 | |
d62a17ae | 6158 | return 0; |
128ea8ab | 6159 | } |
6160 | ||
6161 | /* | |
6162 | * Handle add of a local MACIP. | |
6163 | */ | |
d62a17ae | 6164 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 6165 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 6166 | { |
d62a17ae | 6167 | struct bgpevpn *vpn; |
6168 | struct prefix_evpn p; | |
128ea8ab | 6169 | |
d62a17ae | 6170 | /* Lookup VNI hash - should exist. */ |
6171 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6172 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6173 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6174 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 6175 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6176 | return -1; | |
6177 | } | |
128ea8ab | 6178 | |
d62a17ae | 6179 | /* Create EVPN type-2 route and schedule for processing. */ |
6180 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 6181 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 6182 | flog_err( |
e50f7cfd | 6183 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 6184 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 6185 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
6186 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
6187 | ? "sticky gateway" | |
6188 | : "", | |
c0d72166 | 6189 | mac, ip, flags); |
d62a17ae | 6190 | return -1; |
6191 | } | |
128ea8ab | 6192 | |
d62a17ae | 6193 | return 0; |
128ea8ab | 6194 | } |
6195 | ||
e3b78da8 | 6196 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
6197 | struct bgp *bgp_vrf) |
6198 | { | |
e3b78da8 | 6199 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 6200 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 6201 | |
5e53dce3 T |
6202 | bgp_evpn = bgp_get_evpn(); |
6203 | assert(bgp_evpn); | |
6a8657d0 | 6204 | |
6a8657d0 MK |
6205 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
6206 | bgpevpn_link_to_l3vni(vpn); | |
6207 | } | |
6208 | ||
14e814ea CS |
6209 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
6210 | struct ethaddr *svi_rmac, | |
6211 | struct ethaddr *vrr_rmac, | |
0483af6e | 6212 | struct in_addr originator_ip, int filter, |
14e814ea CS |
6213 | ifindex_t svi_ifindex, |
6214 | bool is_anycast_mac) | |
fe1dc5a3 MK |
6215 | { |
6216 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 6217 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
6218 | struct listnode *node = NULL; |
6219 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
6220 | as_t as = 0; |
6221 | ||
3621ebc5 | 6222 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 6223 | * auto-creatio |
6224 | */ | |
5e53dce3 T |
6225 | bgp_evpn = bgp_get_evpn(); |
6226 | if (!bgp_evpn) { | |
af4c2728 | 6227 | flog_err( |
e50f7cfd | 6228 | EC_BGP_NO_DFLT, |
3621ebc5 | 6229 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 6230 | l3vni); |
fe1dc5a3 MK |
6231 | return -1; |
6232 | } | |
5a7c43c7 DS |
6233 | |
6234 | if (CHECK_FLAG(bgp_evpn->flags, BGP_FLAG_DELETE_IN_PROGRESS)) { | |
6235 | flog_err(EC_BGP_NO_DFLT, | |
6236 | "Cannot process L3VNI %u ADD - EVPN BGP instance is shutting down", | |
6237 | l3vni); | |
6238 | return -1; | |
6239 | } | |
6240 | ||
5e53dce3 | 6241 | as = bgp_evpn->as; |
fe1dc5a3 | 6242 | |
0437e105 | 6243 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 6244 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
6245 | if (!bgp_vrf) { |
6246 | ||
6247 | int ret = 0; | |
6248 | ||
5d5393b9 DL |
6249 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
6250 | vrf_id == VRF_DEFAULT | |
9eb11997 PG |
6251 | ? BGP_INSTANCE_TYPE_DEFAULT |
6252 | : BGP_INSTANCE_TYPE_VRF, | |
e55b0883 | 6253 | NULL, ASNOTATION_UNDEFINED); |
fe1dc5a3 | 6254 | switch (ret) { |
fe1dc5a3 | 6255 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 6256 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
9eb11997 PG |
6257 | "BGP instance is already running; AS is %s", |
6258 | bgp_vrf->as_pretty); | |
fe1dc5a3 MK |
6259 | return -1; |
6260 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 6261 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 6262 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
6263 | return -1; |
6264 | } | |
6265 | ||
6266 | /* mark as auto created */ | |
6267 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
6268 | } | |
6269 | ||
0483af6e | 6270 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 6271 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 6272 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 6273 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 6274 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 6275 | |
14e814ea CS |
6276 | /* copy anycast MAC from VRR MAC */ |
6277 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
6278 | /* copy sys RMAC from SVI MAC */ | |
6279 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
6280 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
6281 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
6282 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
6283 | ||
c0d72166 DS |
6284 | if (bgp_debug_zebra(NULL)) |
6285 | zlog_debug( | |
6286 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
6287 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
6288 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
6289 | : "disable", | |
6290 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
6291 | &bgp_vrf->evpn_info->pip_rmac_static, | |
6292 | is_anycast_mac ? "Enable" : "Disable"); | |
6293 | ||
c48d9f5f | 6294 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 6295 | if (filter) { |
c48d9f5f MK |
6296 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6297 | ||
10f70510 AD |
6298 | /* |
6299 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
6300 | * set before linking vrf to L3VNI. Thus, no need to clear | |
6301 | * that explicitly. | |
6302 | */ | |
6303 | } else { | |
6304 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
6305 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
6306 | ||
6307 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6308 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
6309 | ||
6310 | /* | |
6311 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
6312 | * flag, update all MACIP routes in this VNI | |
6313 | */ | |
6314 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
6315 | update_all_type2_routes(bgp_evpn, vpn); | |
6316 | } | |
6317 | } | |
6318 | } | |
6319 | ||
530e8a6e | 6320 | /* Map auto derive or configured RTs */ |
58d8948c SW |
6321 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD) || |
6322 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6323 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6324 | else |
6325 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
6326 | ||
58d8948c SW |
6327 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD) || |
6328 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6329 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6330 | |
6331 | /* auto derive RD */ | |
676f83b9 | 6332 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 6333 | |
6a8657d0 | 6334 | /* link all corresponding l2vnis */ |
5e53dce3 | 6335 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 6336 | (void (*)(struct hash_bucket *, |
996c9314 | 6337 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
6338 | bgp_vrf); |
6339 | ||
c48d9f5f MK |
6340 | /* Only update all corresponding type-2 routes if we are advertising two |
6341 | * labels along with type-2 routes | |
6342 | */ | |
6343 | if (!filter) | |
6344 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 6345 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 6346 | |
06d2e8f3 MK |
6347 | /* advertise type-5 routes if needed */ |
6348 | update_advertise_vrf_routes(bgp_vrf); | |
6349 | ||
5ba238b7 MK |
6350 | /* install all remote routes belonging to this l3vni into correspondng |
6351 | * vrf */ | |
6352 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
6353 | |
6354 | return 0; | |
6355 | } | |
6356 | ||
996c9314 | 6357 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
6358 | { |
6359 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 6360 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 6361 | struct listnode *node = NULL; |
18abc1eb | 6362 | struct listnode *next = NULL; |
f1f8b53c | 6363 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
6364 | |
6365 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
6366 | if (!bgp_vrf) { | |
af4c2728 | 6367 | flog_err( |
e50f7cfd | 6368 | EC_BGP_NO_DFLT, |
996c9314 LB |
6369 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
6370 | l3vni); | |
fe1dc5a3 MK |
6371 | return -1; |
6372 | } | |
6373 | ||
5e53dce3 T |
6374 | bgp_evpn = bgp_get_evpn(); |
6375 | if (!bgp_evpn) { | |
af4c2728 | 6376 | flog_err( |
e50f7cfd | 6377 | EC_BGP_NO_DFLT, |
3621ebc5 | 6378 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 6379 | l3vni); |
f1f8b53c MK |
6380 | return -1; |
6381 | } | |
6382 | ||
5a7c43c7 DS |
6383 | if (CHECK_FLAG(bgp_evpn->flags, BGP_FLAG_DELETE_IN_PROGRESS)) { |
6384 | flog_err(EC_BGP_NO_DFLT, | |
6385 | "Cannot process L3VNI %u ADD - EVPN BGP instance is shutting down", | |
6386 | l3vni); | |
6387 | return -1; | |
6388 | } | |
6389 | ||
d846168d | 6390 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 6391 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
6392 | * routes. This will uninstalling the routes from zebra and decremnt the |
6393 | * bgp info count. | |
523cafc4 | 6394 | */ |
d846168d | 6395 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 6396 | |
06d2e8f3 MK |
6397 | /* delete/withdraw all type-5 routes */ |
6398 | delete_withdraw_vrf_routes(bgp_vrf); | |
6399 | ||
fe1dc5a3 MK |
6400 | /* remove the l3vni from vrf instance */ |
6401 | bgp_vrf->l3vni = 0; | |
6402 | ||
6403 | /* remove the Rmac from the BGP vrf */ | |
6404 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
6405 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
6406 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
6407 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
6408 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 6409 | |
530e8a6e | 6410 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 6411 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 6412 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
6413 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
6414 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 6415 | } |
530e8a6e CS |
6416 | |
6417 | /* remove default export RT */ | |
6418 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
6419 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 6420 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 6421 | } |
fe1dc5a3 | 6422 | |
f1f8b53c | 6423 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
6424 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
6425 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6426 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 6427 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
6428 | } |
6429 | } | |
fe1dc5a3 | 6430 | |
18abc1eb | 6431 | /* If any L2VNIs point to this instance, unlink them. */ |
6432 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
6433 | bgpevpn_unlink_from_l3vni(vpn); | |
6434 | ||
ff9d54fb CS |
6435 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6436 | ||
fe1dc5a3 MK |
6437 | /* Delete the instance if it was autocreated */ |
6438 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
6439 | bgp_delete(bgp_vrf); | |
6440 | ||
6441 | return 0; | |
6442 | } | |
6443 | ||
128ea8ab | 6444 | /* |
6445 | * Handle del of a local VNI. | |
6446 | */ | |
d62a17ae | 6447 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 6448 | { |
d62a17ae | 6449 | struct bgpevpn *vpn; |
128ea8ab | 6450 | |
d62a17ae | 6451 | /* Locate VNI hash */ |
6452 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
07b9f44d | 6453 | if (!vpn) |
d62a17ae | 6454 | return 0; |
128ea8ab | 6455 | |
d62a17ae | 6456 | /* Remove all local EVPN routes and schedule for processing (to |
6457 | * withdraw from peers). | |
6458 | */ | |
6459 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 6460 | |
021b6596 AD |
6461 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
6462 | ||
9daa5d47 | 6463 | vpn->svi_ifindex = 0; |
db0e1937 MK |
6464 | /* |
6465 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
6466 | */ | |
6467 | bgp_tip_del(bgp, &vpn->originator_ip); | |
6468 | ||
d62a17ae | 6469 | /* Clear "live" flag and see if hash needs to be freed. */ |
6470 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6471 | if (!is_vni_configured(vpn)) | |
6472 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 6473 | |
d62a17ae | 6474 | return 0; |
128ea8ab | 6475 | } |
6476 | ||
6477 | /* | |
d1911c26 | 6478 | * Handle add (or update) of a local VNI. The VNI changes we care |
6479 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 6480 | */ |
d62a17ae | 6481 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
6482 | struct in_addr originator_ip, |
6483 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
6484 | struct in_addr mcast_grp, |
6485 | ifindex_t svi_ifindex) | |
d62a17ae | 6486 | { |
6487 | struct bgpevpn *vpn; | |
6488 | struct prefix_evpn p; | |
6489 | ||
d62a17ae | 6490 | /* Lookup VNI. If present and no change, exit. */ |
6491 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 6492 | if (vpn) { |
29c53922 | 6493 | |
d1911c26 | 6494 | if (is_vni_live(vpn) |
6495 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 6496 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
6497 | && vpn->tenant_vrf_id == tenant_vrf_id |
6498 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 6499 | /* Probably some other param has changed that we don't |
6500 | * care about. */ | |
6501 | return 0; | |
6502 | ||
76d07c7a AK |
6503 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
6504 | ||
021b6596 AD |
6505 | if (vpn->svi_ifindex != svi_ifindex) { |
6506 | ||
6507 | /* | |
6508 | * Unresolve all the gateway IP nexthops for this VNI | |
6509 | * for old 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_unlink_nexthop, | |
021b6596 AD |
6515 | vpn); |
6516 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
6517 | vpn->svi_ifindex = svi_ifindex; | |
6518 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6519 | ||
6520 | /* | |
6521 | * Resolve all the gateway IP nexthops for this VNI | |
6522 | * for new SVI | |
6523 | */ | |
dc6cef73 AD |
6524 | bgp_evpn_remote_ip_hash_iterate( |
6525 | vpn, | |
6526 | (void (*)(struct hash_bucket *, void *)) | |
6527 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
6528 | vpn); |
6529 | } | |
9daa5d47 | 6530 | |
d1911c26 | 6531 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 6532 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
6533 | |
6534 | /* | |
6535 | * Unresolve all the gateway IP nexthops for this VNI | |
6536 | * in old 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_unlink_nexthop, | |
021b6596 | 6542 | vpn); |
6a8657d0 | 6543 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 6544 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 6545 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
6546 | |
6547 | /* | |
6548 | * Resolve all the gateway IP nexthops for this VNI | |
6549 | * in new tenant vrf | |
6550 | */ | |
dc6cef73 AD |
6551 | bgp_evpn_remote_ip_hash_iterate( |
6552 | vpn, | |
6553 | (void (*)(struct hash_bucket *, void *)) | |
6554 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 6555 | vpn); |
6a8657d0 | 6556 | } |
29c53922 | 6557 | |
d1911c26 | 6558 | /* If tunnel endpoint IP has changed, update (and delete prior |
6559 | * type-3 route, if needed.) | |
6560 | */ | |
4dabdde3 | 6561 | handle_tunnel_ip_change(bgp, vpn, originator_ip); |
d62a17ae | 6562 | |
d1911c26 | 6563 | /* Update all routes with new endpoint IP and/or export RT |
6564 | * for VRFs | |
6565 | */ | |
6566 | if (is_vni_live(vpn)) | |
6567 | update_routes_for_vni(bgp, vpn); | |
879e43a5 | 6568 | } else { |
6569 | /* Create or update as appropriate. */ | |
76d07c7a | 6570 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
879e43a5 | 6571 | mcast_grp, svi_ifindex); |
d62a17ae | 6572 | } |
6573 | ||
db0e1937 | 6574 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6575 | if (is_vni_live(vpn)) |
6576 | return 0; | |
6577 | ||
d62a17ae | 6578 | /* Mark as "live" */ |
6579 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6580 | ||
db0e1937 | 6581 | /* tunnel is now active, add tunnel-ip to db */ |
826c3f6d TA |
6582 | if (bgp_tip_add(bgp, &originator_ip)) |
6583 | /* The originator_ip was not already present in the | |
6584 | * bgp martian next-hop table as a tunnel-ip, so we | |
6585 | * need to go back and filter routes matching the new | |
6586 | * martian next-hop. | |
6587 | */ | |
6588 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
db0e1937 | 6589 | |
fd069644 DS |
6590 | /* |
6591 | * Create EVPN type-3 route and schedule for processing. | |
6592 | * | |
6593 | * RT-3 only if doing head-end replication | |
6594 | */ | |
833b8a50 AK |
6595 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6596 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 6597 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 6598 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
6599 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
6600 | "%u: Type3 route creation failure for VNI %u", | |
6601 | bgp->vrf_id, vni); | |
6602 | return -1; | |
6603 | } | |
d62a17ae | 6604 | } |
6605 | ||
6606 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6607 | * VNI, | |
6608 | * install them. | |
6609 | */ | |
6610 | install_routes_for_vni(bgp, vpn); | |
6611 | ||
d7d97010 MK |
6612 | /* If we are advertising gateway mac-ip |
6613 | It needs to be conveyed again to zebra */ | |
6614 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6615 | ||
df070e6f CS |
6616 | /* advertise svi mac-ip knob to zebra */ |
6617 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6618 | ||
d62a17ae | 6619 | return 0; |
b18825eb | 6620 | } |
14c1a7bf | 6621 | |
fd069644 DS |
6622 | /* |
6623 | * Handle change in setting for BUM handling. The supported values | |
6624 | * are head-end replication and dropping all BUM packets. Any change | |
6625 | * should be registered with zebra. Also, if doing head-end replication, | |
6626 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6627 | * to be dropped, the RT-3s must be withdrawn. | |
6628 | */ | |
6629 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6630 | { | |
6631 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6632 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6633 | "Flooding" : "Flooding Disabled"); | |
6634 | ||
6635 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6636 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6637 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6638 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6639 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6640 | } | |
6641 | ||
7724c0a1 | 6642 | /* |
6643 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6644 | * EVPN routes from peers. | |
6645 | */ | |
d62a17ae | 6646 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6647 | { |
e3b78da8 | 6648 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6649 | void *))cleanup_vni_on_disable, |
6650 | bgp); | |
7724c0a1 | 6651 | } |
6652 | ||
14c1a7bf | 6653 | /* |
6654 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6655 | * BGP instance (default) is being freed. | |
6656 | */ | |
d62a17ae | 6657 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6658 | { |
1525e99f | 6659 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6660 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6661 | bgp); |
6662 | ||
d8bc11a5 DS |
6663 | hash_clean_and_free(&bgp->import_rt_hash, |
6664 | (void (*)(void *))hash_import_rt_free); | |
6665 | ||
6666 | hash_clean_and_free(&bgp->vrf_import_rt_hash, | |
6667 | (void (*)(void *))hash_vrf_import_rt_free); | |
6668 | ||
6669 | hash_clean_and_free(&bgp->vni_svi_hash, | |
6670 | (void (*)(void *))hash_evpn_free); | |
6671 | ||
6672 | /* | |
6673 | * Why is the vnihash freed at the top of this function and | |
6674 | * then deleted here? | |
6675 | */ | |
6676 | hash_clean_and_free(&bgp->vnihash, NULL); | |
1525e99f | 6677 | |
6a154c88 DL |
6678 | list_delete(&bgp->vrf_import_rtl); |
6679 | list_delete(&bgp->vrf_export_rtl); | |
6680 | list_delete(&bgp->l2vnis); | |
fa566a94 PG |
6681 | |
6682 | if (bgp->vrf_prd_pretty) | |
6683 | XFREE(MTYPE_BGP, bgp->vrf_prd_pretty); | |
14c1a7bf | 6684 | } |
6685 | ||
6686 | /* | |
6687 | * Initialization for EVPN | |
6688 | * Create | |
6689 | * VNI hash table | |
6690 | * hash for RT to VNI | |
14c1a7bf | 6691 | */ |
d62a17ae | 6692 | void bgp_evpn_init(struct bgp *bgp) |
6693 | { | |
6694 | bgp->vnihash = | |
6695 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
6696 | bgp->vni_svi_hash = |
6697 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
6698 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 6699 | bgp->import_rt_hash = |
6700 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6701 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6702 | bgp->vrf_import_rt_hash = |
6703 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6704 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6705 | bgp->vrf_import_rtl = list_new(); |
6706 | bgp->vrf_import_rtl->cmp = | |
ca337b46 SW |
6707 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6708 | bgp->vrf_import_rtl->del = evpn_vrf_rt_del; | |
c581d8b0 MK |
6709 | bgp->vrf_export_rtl = list_new(); |
6710 | bgp->vrf_export_rtl->cmp = | |
ca337b46 SW |
6711 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6712 | bgp->vrf_export_rtl->del = evpn_vrf_rt_del; | |
6a8657d0 | 6713 | bgp->l2vnis = list_new(); |
64465785 | 6714 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6715 | /* By default Duplicate Address Dection is enabled. |
6716 | * Max-moves (N) 5, detection time (M) 180 | |
6717 | * default action is warning-only | |
6718 | * freeze action permanently freezes address, | |
6719 | * and freeze time (auto-recovery) is disabled. | |
6720 | */ | |
6721 | if (bgp->evpn_info) { | |
6722 | bgp->evpn_info->dup_addr_detect = true; | |
6723 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6724 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6725 | bgp->evpn_info->dad_freeze = false; | |
6726 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6727 | /* Initialize zebra vxlan */ |
6728 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6729 | /* Enable PIP feature by default for bgp vrf instance */ |
6730 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6731 | struct bgp *bgp_default; | |
6732 | ||
6733 | bgp->evpn_info->advertise_pip = true; | |
6734 | bgp_default = bgp_get_default(); | |
6735 | if (bgp_default) | |
6736 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6737 | } | |
85c8d83b | 6738 | } |
fd069644 DS |
6739 | |
6740 | /* Default BUM handling is to do head-end replication. */ | |
6741 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6742 | |
6743 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6744 | } |
10ebe1ab MK |
6745 | |
6746 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6747 | { | |
6748 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6749 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6750 | } |
44c69747 LK |
6751 | |
6752 | /* | |
6753 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6754 | */ | |
5f040085 | 6755 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6756 | { |
6757 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6758 | ||
6759 | if (!pfx || pfx->family != AF_EVPN) | |
6760 | return 0; | |
6761 | ||
6762 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6763 | return 0; | |
6764 | ||
6765 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6766 | } | |
7c312383 AD |
6767 | |
6768 | /* | |
6769 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6770 | */ | |
5a1ae2c2 | 6771 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6772 | { |
6773 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6774 | ||
6775 | /* | |
e11329ca | 6776 | * EVPN routes should be marked as valid only if the nexthop is |
6777 | * reachable. Only if this happens, the route should be imported | |
6778 | * (into VNI or VRF routing tables) and/or advertised. | |
fff7545a | 6779 | * Note: This is currently applied for EVPN type-1, type-2, |
6780 | * type-3, type-4 and type-5 routes. | |
6781 | * It may be tweaked later on for other routes, or | |
e11329ca | 6782 | * even removed completely when all routes are handled. |
7c312383 | 6783 | */ |
fa46a5cd AK |
6784 | if (pfx && pfx->family == AF_EVPN |
6785 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6786 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6787 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6788 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6789 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6790 | return true; |
6791 | ||
6792 | return false; | |
6793 | } | |
021b6596 AD |
6794 | |
6795 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6796 | { | |
6797 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6798 | struct evpn_remote_ip *ip; | |
6799 | ||
6800 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6801 | *ip = *key; | |
6802 | ip->macip_path_list = list_new(); | |
6803 | ||
6804 | return ip; | |
6805 | } | |
6806 | ||
6807 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6808 | { | |
6809 | const struct evpn_remote_ip *ip = p; | |
6810 | const struct ipaddr *addr = &ip->addr; | |
6811 | ||
6812 | if (IS_IPADDR_V4(addr)) | |
6813 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6814 | ||
6815 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6816 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6817 | } | |
6818 | ||
6819 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6820 | { | |
6821 | const struct evpn_remote_ip *ip1 = p1; | |
6822 | const struct evpn_remote_ip *ip2 = p2; | |
6823 | ||
761cc919 | 6824 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6825 | } |
6826 | ||
6827 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6828 | { | |
dc6cef73 AD |
6829 | if (!evpn_resolve_overlay_index()) |
6830 | return; | |
6831 | ||
021b6596 AD |
6832 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6833 | bgp_evpn_remote_ip_hash_cmp, | |
6834 | "BGP EVPN remote IP hash"); | |
6835 | } | |
6836 | ||
6837 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6838 | { | |
6839 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6840 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6841 | ||
6842 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6843 | ||
6844 | list_delete(&ip->macip_path_list); | |
6845 | ||
6846 | hash_release(vpn->remote_ip_hash, ip); | |
6847 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6848 | } | |
6849 | ||
6850 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6851 | { | |
dc6cef73 | 6852 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6853 | return; |
6854 | ||
6855 | hash_iterate(vpn->remote_ip_hash, | |
6856 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6857 | vpn); | |
6858 | ||
6859 | hash_free(vpn->remote_ip_hash); | |
6860 | vpn->remote_ip_hash = NULL; | |
6861 | } | |
6862 | ||
6863 | /* Add a remote MAC/IP route to hash table */ | |
6864 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6865 | struct bgp_path_info *pi) | |
6866 | { | |
6867 | struct evpn_remote_ip tmp; | |
6868 | struct evpn_remote_ip *ip; | |
6869 | struct prefix_evpn *evp; | |
6870 | ||
dc6cef73 AD |
6871 | if (!evpn_resolve_overlay_index()) |
6872 | return; | |
6873 | ||
6874 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6875 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6876 | return; | |
6877 | ||
021b6596 AD |
6878 | evp = (struct prefix_evpn *)&pi->net->p; |
6879 | ||
6880 | if (evp->family != AF_EVPN | |
6881 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6882 | || is_evpn_prefix_ipaddr_none(evp)) | |
6883 | return; | |
6884 | ||
6885 | tmp.addr = evp->prefix.macip_addr.ip; | |
6886 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6887 | if (ip) { | |
6888 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6889 | return; | |
6890 | (void)listnode_add(ip->macip_path_list, pi); | |
6891 | return; | |
6892 | } | |
6893 | ||
6894 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
021b6596 AD |
6895 | (void)listnode_add(ip->macip_path_list, pi); |
6896 | ||
6897 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6898 | } | |
6899 | ||
6900 | /* Delete a remote MAC/IP route from hash table */ | |
6901 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6902 | struct bgp_path_info *pi) | |
6903 | { | |
6904 | struct evpn_remote_ip tmp; | |
6905 | struct evpn_remote_ip *ip; | |
6906 | struct prefix_evpn *evp; | |
6907 | ||
dc6cef73 AD |
6908 | if (!evpn_resolve_overlay_index()) |
6909 | return; | |
6910 | ||
021b6596 AD |
6911 | evp = (struct prefix_evpn *)&pi->net->p; |
6912 | ||
6913 | if (evp->family != AF_EVPN | |
6914 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6915 | || is_evpn_prefix_ipaddr_none(evp)) | |
6916 | return; | |
6917 | ||
6918 | tmp.addr = evp->prefix.macip_addr.ip; | |
6919 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6920 | if (ip == NULL) | |
6921 | return; | |
6922 | ||
6923 | listnode_delete(ip->macip_path_list, pi); | |
6924 | ||
6925 | if (ip->macip_path_list->count == 0) { | |
6926 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6927 | hash_release(vpn->remote_ip_hash, ip); | |
889360dc | 6928 | list_delete(&ip->macip_path_list); |
021b6596 AD |
6929 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); |
6930 | } | |
6931 | } | |
6932 | ||
dc6cef73 AD |
6933 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6934 | void (*func)(struct hash_bucket *, | |
6935 | void *), | |
6936 | void *arg) | |
6937 | { | |
6938 | if (!evpn_resolve_overlay_index()) | |
6939 | return; | |
6940 | ||
6941 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6942 | } | |
6943 | ||
021b6596 AD |
6944 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6945 | { | |
6946 | char buf[INET6_ADDRSTRLEN]; | |
021b6596 AD |
6947 | struct listnode *node = NULL; |
6948 | struct bgp_path_info *pi = NULL; | |
6949 | struct vty *vty = (struct vty *)args; | |
6950 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6951 | ||
6952 | vty_out(vty, " Remote IP: %s\n", | |
6953 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6954 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
511211bf DA |
6955 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) |
6956 | vty_out(vty, " %pFX\n", &pi->net->p); | |
021b6596 AD |
6957 | } |
6958 | ||
6959 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6960 | { | |
6961 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6962 | struct vty *vty = (struct vty *)args; | |
6963 | ||
6964 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6965 | bgp_evpn_remote_ip_hash_iterate( |
6966 | vpn, | |
021b6596 AD |
6967 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6968 | vty); | |
6969 | vty_out(vty, "\n"); | |
6970 | } | |
6971 | ||
6972 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6973 | void *args) | |
6974 | { | |
6975 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6976 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6977 | ||
6978 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6979 | } | |
6980 | ||
6981 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6982 | void *args) | |
6983 | { | |
6984 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6985 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6986 | ||
6987 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6988 | } | |
6989 | ||
6990 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6991 | { | |
6992 | const struct bgpevpn *vpn = p; | |
6993 | ||
6994 | return jhash_1word(vpn->svi_ifindex, 0); | |
6995 | } | |
6996 | ||
6997 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6998 | { | |
6999 | const struct bgpevpn *vpn1 = p1; | |
7000 | const struct bgpevpn *vpn2 = p2; | |
7001 | ||
7002 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
7003 | } | |
7004 | ||
7005 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
7006 | ifindex_t svi) | |
7007 | { | |
7008 | struct bgpevpn *vpn; | |
7009 | struct bgpevpn tmp; | |
7010 | ||
6006b807 | 7011 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
7012 | tmp.svi_ifindex = svi; |
7013 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
7014 | return vpn; | |
7015 | } | |
7016 | ||
7017 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
7018 | { | |
7019 | if (vpn->svi_ifindex == 0) | |
7020 | return; | |
7021 | ||
8e3aae66 | 7022 | (void)hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); |
021b6596 AD |
7023 | } |
7024 | ||
7025 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
7026 | struct bgpevpn *vpn) | |
7027 | { | |
7028 | if (vpn->svi_ifindex == 0) | |
7029 | return; | |
7030 | ||
7031 | hash_release(bgp->vni_svi_hash, vpn); | |
7032 | } | |
7033 | ||
7034 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
7035 | { | |
7036 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
7037 | struct vty *vty = (struct vty *)args; | |
7038 | ||
7039 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
7040 | } | |
7041 | ||
7042 | /* | |
7043 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
7044 | * gateway IP overlay index. | |
7045 | * This function returns true if there is a remote MAC/IP route for the gateway | |
7046 | * IP in the EVI of the nexthop SVI. | |
7047 | */ | |
7048 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
7049 | { | |
7050 | struct bgp *bgp_evpn = NULL; | |
7051 | struct bgpevpn *vpn = NULL; | |
7052 | struct evpn_remote_ip tmp; | |
7053 | struct prefix *p; | |
7054 | ||
dc6cef73 AD |
7055 | if (!evpn_resolve_overlay_index()) |
7056 | return false; | |
7057 | ||
021b6596 AD |
7058 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
7059 | return false; | |
7060 | ||
7061 | bgp_evpn = bgp_get_evpn(); | |
7062 | if (!bgp_evpn) | |
7063 | return false; | |
7064 | ||
7065 | /* | |
7066 | * Gateway IP is resolved by nht over SVI interface. | |
7067 | * Use this SVI to find corresponding EVI(L2 context) | |
7068 | */ | |
7069 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
7070 | if (!vpn) | |
7071 | return false; | |
7072 | ||
7073 | if (vpn->bgp_vrf != bnc->bgp) | |
7074 | return false; | |
7075 | ||
7076 | /* | |
7077 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
7078 | * which stores all the remote IP addresses received via MAC/IP routes | |
7079 | * in this EVI | |
7080 | */ | |
6006b807 | 7081 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
7082 | |
7083 | p = &bnc->prefix; | |
7084 | if (p->family == AF_INET) { | |
7085 | tmp.addr.ipa_type = IPADDR_V4; | |
7086 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
7087 | sizeof(struct in_addr)); | |
7088 | } else if (p->family == AF_INET6) { | |
7089 | tmp.addr.ipa_type = IPADDR_V6; | |
7090 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
7091 | sizeof(struct in6_addr)); | |
7092 | } else | |
7093 | return false; | |
7094 | ||
7095 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
7096 | return false; | |
7097 | ||
7098 | return true; | |
7099 | } | |
7100 | ||
7101 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
7102 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
7103 | struct ipaddr *addr, | |
7104 | bool resolve) | |
7105 | { | |
7106 | afi_t afi; | |
7107 | struct prefix p; | |
7108 | struct bgp_nexthop_cache *bnc; | |
7109 | struct bgp_nexthop_cache_head *tree = NULL; | |
7110 | ||
7111 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
7112 | return; | |
7113 | ||
6006b807 | 7114 | memset(&p, 0, sizeof(p)); |
021b6596 AD |
7115 | |
7116 | if (addr->ipa_type == IPADDR_V4) { | |
7117 | afi = AFI_IP; | |
7118 | p.family = AF_INET; | |
7119 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
7120 | sizeof(struct in_addr)); | |
7121 | p.prefixlen = IPV4_MAX_BITLEN; | |
7122 | } else if (addr->ipa_type == IPADDR_V6) { | |
7123 | afi = AFI_IP6; | |
7124 | p.family = AF_INET6; | |
7125 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
7126 | sizeof(struct in6_addr)); | |
7127 | p.prefixlen = IPV6_MAX_BITLEN; | |
7128 | } else | |
7129 | return; | |
7130 | ||
7131 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
35aae5c9 | 7132 | bnc = bnc_find(tree, &p, 0, 0); |
021b6596 AD |
7133 | |
7134 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
7135 | return; | |
7136 | ||
7137 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
7138 | return; | |
7139 | ||
511211bf DA |
7140 | if (BGP_DEBUG(nht, NHT)) |
7141 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %pFX", | |
021b6596 | 7142 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, |
511211bf DA |
7143 | vpn->vni, (resolve ? "add" : "delete"), |
7144 | &bnc->prefix); | |
021b6596 AD |
7145 | |
7146 | /* | |
7147 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
7148 | * Set nexthop as valid only if it is already L3 reachable | |
7149 | */ | |
7150 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
7151 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7152 | bnc->flags |= BGP_NEXTHOP_VALID; | |
7153 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7154 | evaluate_paths(bnc); | |
7155 | } | |
7156 | ||
7157 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
7158 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
7159 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
7160 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7161 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7162 | evaluate_paths(bnc); | |
7163 | } | |
7164 | } | |
7165 | ||
dc6cef73 AD |
7166 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
7167 | void *arg) | |
7168 | { | |
7169 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7170 | struct bgp_dest *dest; | |
7171 | struct bgp_path_info *pi; | |
7172 | ||
7173 | bgp_evpn_remote_ip_hash_init(vpn); | |
7174 | ||
852d9f97 | 7175 | for (dest = bgp_table_top(vpn->ip_table); dest; |
dc6cef73 AD |
7176 | dest = bgp_route_next(dest)) |
7177 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
7178 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
7179 | } | |
7180 | ||
7181 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
7182 | void *arg) | |
7183 | { | |
7184 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7185 | ||
7186 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
7187 | } | |
742341e1 SW |
7188 | |
7189 | /* | |
7190 | * Helper function for getting the correct label index for l3vni. | |
7191 | * | |
7192 | * Returns the label with the l3vni of the path's label stack. | |
7193 | * | |
7194 | * L3vni is always last label. Type5 will only | |
7195 | * have one label, Type2 will have two. | |
7196 | * | |
7197 | */ | |
7198 | mpls_label_t *bgp_evpn_path_info_labels_get_l3vni(mpls_label_t *labels, | |
7199 | uint32_t num_labels) | |
7200 | { | |
7201 | if (!labels) | |
7202 | return NULL; | |
7203 | ||
7204 | if (!num_labels) | |
7205 | return NULL; | |
7206 | ||
7207 | return &labels[num_labels - 1]; | |
7208 | } | |
7209 | ||
7210 | /* | |
7211 | * Returns the l3vni of the path converted from the label stack. | |
7212 | */ | |
7213 | vni_t bgp_evpn_path_info_get_l3vni(const struct bgp_path_info *pi) | |
7214 | { | |
7215 | if (!pi->extra) | |
7216 | return 0; | |
7217 | ||
7218 | return label2vni(bgp_evpn_path_info_labels_get_l3vni( | |
7219 | pi->extra->label, pi->extra->num_labels)); | |
7220 | } | |
7221 | ||
7222 | /* | |
7223 | * Returns true if the l3vni of any of this path doesn't match vrf's l3vni. | |
7224 | */ | |
7225 | static bool bgp_evpn_path_is_dvni(const struct bgp *bgp_vrf, | |
7226 | const struct bgp_path_info *pi) | |
7227 | { | |
7228 | vni_t vni = 0; | |
7229 | ||
7230 | vni = bgp_evpn_path_info_get_l3vni(pi); | |
7231 | ||
7232 | if ((vni > 0) && (vni != bgp_vrf->l3vni)) | |
7233 | return true; | |
7234 | ||
7235 | return false; | |
7236 | } | |
7237 | ||
7238 | /* | |
7239 | * Returns true if the l3vni of any of the mpath's doesn't match vrf's l3vni. | |
7240 | */ | |
7241 | bool bgp_evpn_mpath_has_dvni(const struct bgp *bgp_vrf, | |
7242 | struct bgp_path_info *mpinfo) | |
7243 | { | |
7244 | for (; mpinfo; mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
7245 | if (bgp_evpn_path_is_dvni(bgp_vrf, mpinfo)) | |
7246 | return true; | |
7247 | } | |
7248 | ||
7249 | return false; | |
7250 | } |