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Merge pull request #12248 from pguibert6WIND/bgpasdot
[mirror_frr.git] / zebra / zebra_vxlan.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Zebra EVPN for VxLAN code
4 * Copyright (C) 2016, 2017 Cumulus Networks, Inc.
5 */
6
7 #include <zebra.h>
8
9 #include "hash.h"
10 #include "if.h"
11 #include "jhash.h"
12 #include "linklist.h"
13 #include "log.h"
14 #include "memory.h"
15 #include "prefix.h"
16 #include "stream.h"
17 #include "table.h"
18 #include "vlan.h"
19 #include "vxlan.h"
20 #ifdef GNU_LINUX
21 #include <linux/neighbour.h>
22 #endif
23 #include "lib/printfrr.h"
24
25 #include "zebra/zebra_router.h"
26 #include "zebra/debug.h"
27 #include "zebra/interface.h"
28 #include "zebra/rib.h"
29 #include "zebra/rt.h"
30 #include "zebra/rt_netlink.h"
31 #include "zebra/zebra_errors.h"
32 #include "zebra/zebra_l2.h"
33 #include "zebra/zebra_l2_bridge_if.h"
34 #include "zebra/zebra_ns.h"
35 #include "zebra/zebra_vrf.h"
36 #include "zebra/zebra_vxlan.h"
37 #include "zebra/zebra_vxlan_private.h"
38 #include "zebra/zebra_evpn.h"
39 #include "zebra/zebra_evpn_mac.h"
40 #include "zebra/zebra_evpn_neigh.h"
41 #include "zebra/zebra_evpn_mh.h"
42 #include "zebra/zebra_evpn_vxlan.h"
43 #include "zebra/zebra_router.h"
44
45 DEFINE_MTYPE_STATIC(ZEBRA, HOST_PREFIX, "host prefix");
46 DEFINE_MTYPE_STATIC(ZEBRA, ZL3VNI, "L3 VNI hash");
47 DEFINE_MTYPE_STATIC(ZEBRA, L3VNI_MAC, "EVPN L3VNI MAC");
48 DEFINE_MTYPE_STATIC(ZEBRA, L3NEIGH, "EVPN Neighbor");
49 DEFINE_MTYPE_STATIC(ZEBRA, ZVXLAN_SG, "zebra VxLAN multicast group");
50 DEFINE_MTYPE_STATIC(ZEBRA, EVPN_VTEP, "zebra VxLAN VTEP IP");
51
52 DEFINE_HOOK(zebra_rmac_update,
53 (struct zebra_mac * rmac, struct zebra_l3vni *zl3vni, bool delete,
54 const char *reason),
55 (rmac, zl3vni, delete, reason));
56
57 /* config knobs */
58 static bool accept_bgp_seq = true;
59
60 /* Single VXlan Device Global Neigh Table */
61 struct hash *svd_nh_table;
62
63 /* static function declarations */
64 static void zevpn_print_neigh_hash_all_evpn(struct hash_bucket *bucket,
65 void **args);
66 static void zl3vni_print_nh(struct zebra_neigh *n, struct vty *vty,
67 json_object *json);
68 static void zl3vni_print_rmac(struct zebra_mac *zrmac, struct vty *vty,
69 json_object *json);
70 static void zevpn_print_mac_hash_all_evpn(struct hash_bucket *bucket, void *ctxt);
71
72 /* l3-vni next-hop neigh related APIs */
73 static struct zebra_neigh *zl3vni_nh_lookup(struct zebra_l3vni *zl3vni,
74 const struct ipaddr *ip);
75 static void *zl3vni_nh_alloc(void *p);
76 static struct zebra_neigh *zl3vni_nh_add(struct zebra_l3vni *zl3vni,
77 const struct ipaddr *vtep_ip,
78 const struct ethaddr *rmac);
79 static int zl3vni_nh_del(struct zebra_l3vni *zl3vni, struct zebra_neigh *n);
80 static int zl3vni_nh_install(struct zebra_l3vni *zl3vni, struct zebra_neigh *n);
81 static int zl3vni_nh_uninstall(struct zebra_l3vni *zl3vni,
82 struct zebra_neigh *n);
83 static struct zebra_neigh *svd_nh_add(const struct ipaddr *vtep_ip,
84 const struct ethaddr *rmac);
85 static int svd_nh_del(struct zebra_neigh *n);
86 static int svd_nh_install(struct zebra_l3vni *zl3vni, struct zebra_neigh *n);
87 static int svd_nh_uninstall(struct zebra_l3vni *zl3vni, struct zebra_neigh *n);
88
89 /* l3-vni rmac related APIs */
90 static void zl3vni_print_rmac_hash(struct hash_bucket *, void *);
91 static struct zebra_mac *zl3vni_rmac_lookup(struct zebra_l3vni *zl3vni,
92 const struct ethaddr *rmac);
93 static void *zl3vni_rmac_alloc(void *p);
94 static struct zebra_mac *zl3vni_rmac_add(struct zebra_l3vni *zl3vni,
95 const struct ethaddr *rmac);
96 static int zl3vni_rmac_del(struct zebra_l3vni *zl3vni, struct zebra_mac *zrmac);
97 static int zl3vni_rmac_install(struct zebra_l3vni *zl3vni,
98 struct zebra_mac *zrmac);
99 static int zl3vni_rmac_uninstall(struct zebra_l3vni *zl3vni,
100 struct zebra_mac *zrmac);
101
102 /* l3-vni related APIs*/
103 static void *zl3vni_alloc(void *p);
104 static struct zebra_l3vni *zl3vni_add(vni_t vni, vrf_id_t vrf_id);
105 static int zl3vni_del(struct zebra_l3vni *zl3vni);
106
107 static void zevpn_build_hash_table(void);
108 static unsigned int zebra_vxlan_sg_hash_key_make(const void *p);
109 static bool zebra_vxlan_sg_hash_eq(const void *p1, const void *p2);
110 static void zebra_vxlan_sg_do_deref(struct zebra_vrf *zvrf,
111 struct in_addr sip, struct in_addr mcast_grp);
112 static struct zebra_vxlan_sg *zebra_vxlan_sg_do_ref(struct zebra_vrf *vrf,
113 struct in_addr sip,
114 struct in_addr mcast_grp);
115 static void zebra_vxlan_cleanup_sg_table(struct zebra_vrf *zvrf);
116
117 bool zebra_evpn_do_dup_addr_detect(struct zebra_vrf *zvrf)
118 {
119 return zvrf->dup_addr_detect && zebra_evpn_mh_do_dup_addr_detect();
120 }
121
122 /* Private functions */
123 static int host_rb_entry_compare(const struct host_rb_entry *hle1,
124 const struct host_rb_entry *hle2)
125 {
126 if (hle1->p.family < hle2->p.family)
127 return -1;
128
129 if (hle1->p.family > hle2->p.family)
130 return 1;
131
132 if (hle1->p.prefixlen < hle2->p.prefixlen)
133 return -1;
134
135 if (hle1->p.prefixlen > hle2->p.prefixlen)
136 return 1;
137
138 if (hle1->p.family == AF_INET) {
139 if (hle1->p.u.prefix4.s_addr < hle2->p.u.prefix4.s_addr)
140 return -1;
141
142 if (hle1->p.u.prefix4.s_addr > hle2->p.u.prefix4.s_addr)
143 return 1;
144
145 return 0;
146 } else if (hle1->p.family == AF_INET6) {
147 return memcmp(&hle1->p.u.prefix6, &hle2->p.u.prefix6,
148 IPV6_MAX_BYTELEN);
149 } else if (hle1->p.family == AF_EVPN) {
150 uint8_t family1;
151 uint8_t family2;
152
153 /* two (v4/v6) dummy prefixes of route_type BGP_EVPN_AD_ROUTE
154 * are used for all nexthops associated with a non-zero ESI
155 */
156 family1 = is_evpn_prefix_ipaddr_v4(
157 (const struct prefix_evpn *)&hle1->p)
158 ? AF_INET
159 : AF_INET6;
160 family2 = is_evpn_prefix_ipaddr_v4(
161 (const struct prefix_evpn *)&hle2->p)
162 ? AF_INET
163 : AF_INET6;
164
165
166 if (family1 < family2)
167 return -1;
168
169 if (family1 > family2)
170 return 1;
171
172 return 0;
173 } else {
174 zlog_debug("%s: Unexpected family type: %d", __func__,
175 hle1->p.family);
176 return 0;
177 }
178 }
179 RB_GENERATE(host_rb_tree_entry, host_rb_entry, hl_entry, host_rb_entry_compare);
180
181 static uint32_t rb_host_count(struct host_rb_tree_entry *hrbe)
182 {
183 struct host_rb_entry *hle;
184 uint32_t count = 0;
185
186 RB_FOREACH (hle, host_rb_tree_entry, hrbe)
187 count++;
188
189 return count;
190 }
191
192 static int l3vni_rmac_nh_list_cmp(void *p1, void *p2)
193 {
194 const struct ipaddr *vtep_ip1 = p1;
195 const struct ipaddr *vtep_ip2 = p2;
196
197 return !ipaddr_cmp(vtep_ip1, vtep_ip2);
198 }
199
200 static void l3vni_rmac_nh_free(struct ipaddr *vtep_ip)
201 {
202 XFREE(MTYPE_EVPN_VTEP, vtep_ip);
203 }
204
205 static void l3vni_rmac_nh_list_nh_delete(struct zebra_l3vni *zl3vni,
206 struct zebra_mac *zrmac,
207 struct ipaddr *vtep_ip)
208 {
209 struct listnode *node = NULL, *nnode = NULL;
210 struct ipaddr *vtep = NULL;
211
212 for (ALL_LIST_ELEMENTS(zrmac->nh_list, node, nnode, vtep)) {
213 if (ipaddr_cmp(vtep, vtep_ip) == 0)
214 break;
215 }
216
217 if (node) {
218 l3vni_rmac_nh_free(vtep);
219 list_delete_node(zrmac->nh_list, node);
220 }
221 }
222
223 /*
224 * Print neighbors for all EVPN.
225 */
226 static void zevpn_print_neigh_hash_all_evpn(struct hash_bucket *bucket,
227 void **args)
228 {
229 struct vty *vty;
230 json_object *json = NULL, *json_evpn = NULL;
231 struct zebra_evpn *zevpn;
232 uint32_t num_neigh;
233 struct neigh_walk_ctx wctx;
234 char vni_str[VNI_STR_LEN];
235 uint32_t print_dup;
236
237 vty = (struct vty *)args[0];
238 json = (json_object *)args[1];
239 print_dup = (uint32_t)(uintptr_t)args[2];
240
241 zevpn = (struct zebra_evpn *)bucket->data;
242
243 num_neigh = hashcount(zevpn->neigh_table);
244
245 if (print_dup)
246 num_neigh = num_dup_detected_neighs(zevpn);
247
248 if (json == NULL) {
249 vty_out(vty,
250 "\nVNI %u #ARP (IPv4 and IPv6, local and remote) %u\n\n",
251 zevpn->vni, num_neigh);
252 } else {
253 json_evpn = json_object_new_object();
254 json_object_int_add(json_evpn, "numArpNd", num_neigh);
255 snprintf(vni_str, VNI_STR_LEN, "%u", zevpn->vni);
256 }
257
258 if (!num_neigh) {
259 if (json)
260 json_object_object_add(json, vni_str, json_evpn);
261 return;
262 }
263
264 /* Since we have IPv6 addresses to deal with which can vary widely in
265 * size, we try to be a bit more elegant in display by first computing
266 * the maximum width.
267 */
268 memset(&wctx, 0, sizeof(wctx));
269 wctx.zevpn = zevpn;
270 wctx.vty = vty;
271 wctx.addr_width = 15;
272 wctx.json = json_evpn;
273 hash_iterate(zevpn->neigh_table, zebra_evpn_find_neigh_addr_width,
274 &wctx);
275
276 if (json == NULL)
277 zebra_evpn_print_neigh_hdr(vty, &wctx);
278
279 if (print_dup)
280 hash_iterate(zevpn->neigh_table,
281 zebra_evpn_print_dad_neigh_hash, &wctx);
282 else
283 hash_iterate(zevpn->neigh_table, zebra_evpn_print_neigh_hash,
284 &wctx);
285
286 if (json)
287 json_object_object_add(json, vni_str, json_evpn);
288 }
289
290 /*
291 * Print neighbors for all EVPNs in detail.
292 */
293 static void zevpn_print_neigh_hash_all_evpn_detail(struct hash_bucket *bucket,
294 void **args)
295 {
296 struct vty *vty;
297 json_object *json = NULL, *json_evpn = NULL;
298 struct zebra_evpn *zevpn;
299 uint32_t num_neigh;
300 struct neigh_walk_ctx wctx;
301 char vni_str[VNI_STR_LEN];
302 uint32_t print_dup;
303
304 vty = (struct vty *)args[0];
305 json = (json_object *)args[1];
306 print_dup = (uint32_t)(uintptr_t)args[2];
307
308 zevpn = (struct zebra_evpn *)bucket->data;
309 if (!zevpn) {
310 if (json)
311 vty_out(vty, "{}\n");
312 return;
313 }
314 num_neigh = hashcount(zevpn->neigh_table);
315
316 if (print_dup && num_dup_detected_neighs(zevpn) == 0)
317 return;
318
319 if (json == NULL) {
320 vty_out(vty,
321 "\nVNI %u #ARP (IPv4 and IPv6, local and remote) %u\n\n",
322 zevpn->vni, num_neigh);
323 } else {
324 json_evpn = json_object_new_object();
325 json_object_int_add(json_evpn, "numArpNd", num_neigh);
326 snprintf(vni_str, VNI_STR_LEN, "%u", zevpn->vni);
327 }
328 if (!num_neigh) {
329 if (json)
330 json_object_object_add(json, vni_str, json_evpn);
331 return;
332 }
333
334 memset(&wctx, 0, sizeof(wctx));
335 wctx.zevpn = zevpn;
336 wctx.vty = vty;
337 wctx.addr_width = 15;
338 wctx.json = json_evpn;
339
340 if (print_dup)
341 hash_iterate(zevpn->neigh_table,
342 zebra_evpn_print_dad_neigh_hash_detail, &wctx);
343 else
344 hash_iterate(zevpn->neigh_table,
345 zebra_evpn_print_neigh_hash_detail, &wctx);
346
347 if (json)
348 json_object_object_add(json, vni_str, json_evpn);
349 }
350
351 /* print a specific next hop for an l3vni */
352 static void zl3vni_print_nh(struct zebra_neigh *n, struct vty *vty,
353 json_object *json)
354 {
355 char buf1[ETHER_ADDR_STRLEN];
356 char buf2[INET6_ADDRSTRLEN];
357 json_object *json_hosts = NULL;
358 struct host_rb_entry *hle;
359
360 if (!json) {
361 vty_out(vty, "Ip: %s\n",
362 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
363 vty_out(vty, " RMAC: %s\n",
364 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
365 if (n->refcnt)
366 /* SVD neigh */
367 vty_out(vty, " Refcount: %u\n", n->refcnt);
368 else {
369 vty_out(vty, " Refcount: %d\n",
370 rb_host_count(&n->host_rb));
371 vty_out(vty, " Prefixes:\n");
372 RB_FOREACH (hle, host_rb_tree_entry, &n->host_rb)
373 vty_out(vty, " %pFX\n", &hle->p);
374 }
375 } else {
376 json_hosts = json_object_new_array();
377 json_object_string_add(
378 json, "ip", ipaddr2str(&(n->ip), buf2, sizeof(buf2)));
379 json_object_string_add(
380 json, "routerMac",
381 prefix_mac2str(&n->emac, buf2, sizeof(buf2)));
382 if (n->refcnt)
383 /* SVD neigh */
384 json_object_int_add(json, "refCount", n->refcnt);
385 else {
386 json_object_int_add(json, "refCount",
387 rb_host_count(&n->host_rb));
388 RB_FOREACH (hle, host_rb_tree_entry, &n->host_rb)
389 json_object_array_add(
390 json_hosts,
391 json_object_new_string(prefix2str(
392 &hle->p, buf2, sizeof(buf2))));
393 json_object_object_add(json, "prefixList", json_hosts);
394 }
395 }
396 }
397
398 /* Print a specific RMAC entry */
399 static void zl3vni_print_rmac(struct zebra_mac *zrmac, struct vty *vty,
400 json_object *json)
401 {
402 struct listnode *node = NULL;
403 struct ipaddr *vtep = NULL;
404 json_object *json_nhs = NULL;
405
406 if (!json) {
407 vty_out(vty, "MAC: %pEA\n", &zrmac->macaddr);
408 vty_out(vty, " Remote VTEP: %pI4\n",
409 &zrmac->fwd_info.r_vtep_ip);
410 } else {
411 json_nhs = json_object_new_array();
412 json_object_string_addf(json, "routerMac", "%pEA",
413 &zrmac->macaddr);
414 json_object_string_addf(json, "vtepIp", "%pI4",
415 &zrmac->fwd_info.r_vtep_ip);
416 for (ALL_LIST_ELEMENTS_RO(zrmac->nh_list, node, vtep)) {
417 json_object_array_add(json_nhs, json_object_new_stringf(
418 "%pIA", vtep));
419 }
420 json_object_object_add(json, "nexthops", json_nhs);
421 }
422 }
423
424 /*
425 * Print MACs for all EVPNs.
426 */
427 static void zevpn_print_mac_hash_all_evpn(struct hash_bucket *bucket, void *ctxt)
428 {
429 struct vty *vty;
430 json_object *json = NULL, *json_evpn = NULL;
431 json_object *json_mac = NULL;
432 struct zebra_evpn *zevpn;
433 uint32_t num_macs;
434 struct mac_walk_ctx *wctx = ctxt;
435 char vni_str[VNI_STR_LEN];
436
437 vty = wctx->vty;
438 json = wctx->json;
439
440 zevpn = (struct zebra_evpn *)bucket->data;
441 wctx->zevpn = zevpn;
442
443 /*We are iterating over a new VNI, set the count to 0*/
444 wctx->count = 0;
445
446 num_macs = num_valid_macs(zevpn);
447 if (!num_macs)
448 return;
449
450 if (wctx->print_dup)
451 num_macs = num_dup_detected_macs(zevpn);
452
453 if (json) {
454 json_evpn = json_object_new_object();
455 json_mac = json_object_new_object();
456 snprintf(vni_str, VNI_STR_LEN, "%u", zevpn->vni);
457 }
458
459 if (!CHECK_FLAG(wctx->flags, SHOW_REMOTE_MAC_FROM_VTEP)) {
460 if (json == NULL) {
461 vty_out(vty, "\nVNI %u #MACs (local and remote) %u\n\n",
462 zevpn->vni, num_macs);
463 vty_out(vty,
464 "Flags: N=sync-neighs, I=local-inactive, P=peer-active, X=peer-proxy\n");
465 vty_out(vty, "%-17s %-6s %-5s %-30s %-5s %s\n", "MAC",
466 "Type", "Flags", "Intf/Remote ES/VTEP",
467 "VLAN", "Seq #'s");
468 } else
469 json_object_int_add(json_evpn, "numMacs", num_macs);
470 }
471
472 if (!num_macs) {
473 if (json) {
474 json_object_int_add(json_evpn, "numMacs", num_macs);
475 json_object_object_add(json, vni_str, json_evpn);
476 }
477 return;
478 }
479
480 /* assign per-evpn to wctx->json object to fill macs
481 * under the evpn. Re-assign primary json object to fill
482 * next evpn information.
483 */
484 wctx->json = json_mac;
485 if (wctx->print_dup)
486 hash_iterate(zevpn->mac_table, zebra_evpn_print_dad_mac_hash,
487 wctx);
488 else
489 hash_iterate(zevpn->mac_table, zebra_evpn_print_mac_hash, wctx);
490 wctx->json = json;
491 if (json) {
492 if (wctx->count)
493 json_object_object_add(json_evpn, "macs", json_mac);
494 json_object_object_add(json, vni_str, json_evpn);
495 }
496 }
497
498 /*
499 * Print MACs in detail for all EVPNs.
500 */
501 static void zevpn_print_mac_hash_all_evpn_detail(struct hash_bucket *bucket,
502 void *ctxt)
503 {
504 struct vty *vty;
505 json_object *json = NULL, *json_evpn = NULL;
506 json_object *json_mac = NULL;
507 struct zebra_evpn *zevpn;
508 uint32_t num_macs;
509 struct mac_walk_ctx *wctx = ctxt;
510 char vni_str[VNI_STR_LEN];
511
512 vty = wctx->vty;
513 json = wctx->json;
514
515 zevpn = (struct zebra_evpn *)bucket->data;
516 if (!zevpn) {
517 if (json)
518 vty_out(vty, "{}\n");
519 return;
520 }
521 wctx->zevpn = zevpn;
522
523 /*We are iterating over a new EVPN, set the count to 0*/
524 wctx->count = 0;
525
526 num_macs = num_valid_macs(zevpn);
527 if (!num_macs)
528 return;
529
530 if (wctx->print_dup && (num_dup_detected_macs(zevpn) == 0))
531 return;
532
533 if (json) {
534 json_evpn = json_object_new_object();
535 json_mac = json_object_new_object();
536 snprintf(vni_str, VNI_STR_LEN, "%u", zevpn->vni);
537 }
538
539 if (!CHECK_FLAG(wctx->flags, SHOW_REMOTE_MAC_FROM_VTEP)) {
540 if (json == NULL) {
541 vty_out(vty, "\nVNI %u #MACs (local and remote) %u\n\n",
542 zevpn->vni, num_macs);
543 } else
544 json_object_int_add(json_evpn, "numMacs", num_macs);
545 }
546 /* assign per-evpn to wctx->json object to fill macs
547 * under the evpn. Re-assign primary json object to fill
548 * next evpn information.
549 */
550 wctx->json = json_mac;
551 if (wctx->print_dup)
552 hash_iterate(zevpn->mac_table,
553 zebra_evpn_print_dad_mac_hash_detail, wctx);
554 else
555 hash_iterate(zevpn->mac_table, zebra_evpn_print_mac_hash_detail,
556 wctx);
557 wctx->json = json;
558 if (json) {
559 if (wctx->count)
560 json_object_object_add(json_evpn, "macs", json_mac);
561 json_object_object_add(json, vni_str, json_evpn);
562 }
563 }
564
565 static void zl3vni_print_nh_hash(struct hash_bucket *bucket, void *ctx)
566 {
567 struct nh_walk_ctx *wctx = NULL;
568 struct vty *vty = NULL;
569 struct json_object *json_evpn = NULL;
570 struct json_object *json_nh = NULL;
571 struct zebra_neigh *n = NULL;
572 char buf1[ETHER_ADDR_STRLEN];
573 char buf2[INET6_ADDRSTRLEN];
574
575 wctx = (struct nh_walk_ctx *)ctx;
576 vty = wctx->vty;
577 json_evpn = wctx->json;
578 if (json_evpn)
579 json_nh = json_object_new_object();
580 n = (struct zebra_neigh *)bucket->data;
581
582 if (!json_evpn) {
583 vty_out(vty, "%-15s %-17s\n",
584 ipaddr2str(&(n->ip), buf2, sizeof(buf2)),
585 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
586 } else {
587 json_object_string_add(json_nh, "nexthopIp",
588 ipaddr2str(&n->ip, buf2, sizeof(buf2)));
589 json_object_string_add(
590 json_nh, "routerMac",
591 prefix_mac2str(&n->emac, buf1, sizeof(buf1)));
592 json_object_object_add(json_evpn,
593 ipaddr2str(&(n->ip), buf2, sizeof(buf2)),
594 json_nh);
595 }
596 }
597
598 static void zl3vni_print_nh_all_table(struct hash *nh_table, vni_t vni,
599 struct vty *vty, json_object *json)
600 {
601 uint32_t num_nh = 0;
602 struct nh_walk_ctx wctx;
603 char vni_str[VNI_STR_LEN];
604 json_object *json_evpn = NULL;
605 bool is_svd = false;
606 const char *svd_str = "Global SVD Table";
607
608 if (vni == 0)
609 is_svd = true;
610
611 num_nh = hashcount(nh_table);
612
613 if (!num_nh)
614 return;
615
616 if (json) {
617 json_evpn = json_object_new_object();
618
619 snprintf(vni_str, VNI_STR_LEN, "%u", vni);
620 }
621
622 if (json == NULL) {
623 if (is_svd)
624 vty_out(vty, "\n%s #Next-Hops %u\n\n", svd_str, num_nh);
625 else
626 vty_out(vty, "\nVNI %u #Next-Hops %u\n\n", vni, num_nh);
627
628 vty_out(vty, "%-15s %-17s\n", "IP", "RMAC");
629 } else
630 json_object_int_add(json_evpn, "numNextHops", num_nh);
631
632 memset(&wctx, 0, sizeof(wctx));
633 wctx.vty = vty;
634 wctx.json = json_evpn;
635 hash_iterate(nh_table, zl3vni_print_nh_hash, &wctx);
636 if (json)
637 json_object_object_add(json, vni_str, json_evpn);
638 }
639
640 static void zl3vni_print_nh_hash_all_vni(struct hash_bucket *bucket,
641 void **args)
642 {
643 struct vty *vty = NULL;
644 json_object *json = NULL;
645 struct zebra_l3vni *zl3vni = NULL;
646
647 vty = (struct vty *)args[0];
648 json = (struct json_object *)args[1];
649
650 zl3vni = (struct zebra_l3vni *)bucket->data;
651
652 zl3vni_print_nh_all_table(zl3vni->nh_table, zl3vni->vni, vty, json);
653 }
654
655 static void zl3vni_print_rmac_hash_all_vni(struct hash_bucket *bucket,
656 void **args)
657 {
658 struct vty *vty = NULL;
659 json_object *json = NULL;
660 json_object *json_evpn = NULL;
661 struct zebra_l3vni *zl3vni = NULL;
662 uint32_t num_rmacs;
663 struct rmac_walk_ctx wctx;
664 char vni_str[VNI_STR_LEN];
665
666 vty = (struct vty *)args[0];
667 json = (struct json_object *)args[1];
668
669 zl3vni = (struct zebra_l3vni *)bucket->data;
670
671 num_rmacs = hashcount(zl3vni->rmac_table);
672 if (!num_rmacs)
673 return;
674
675 if (json) {
676 json_evpn = json_object_new_object();
677 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
678 }
679
680 if (json == NULL) {
681 vty_out(vty, "\nVNI %u #RMACs %u\n\n", zl3vni->vni, num_rmacs);
682 vty_out(vty, "%-17s %-21s\n", "RMAC", "Remote VTEP");
683 } else
684 json_object_int_add(json_evpn, "numRmacs", num_rmacs);
685
686 /* assign per-vni to wctx->json object to fill macs
687 * under the vni. Re-assign primary json object to fill
688 * next vni information.
689 */
690 memset(&wctx, 0, sizeof(wctx));
691 wctx.vty = vty;
692 wctx.json = json_evpn;
693 hash_iterate(zl3vni->rmac_table, zl3vni_print_rmac_hash, &wctx);
694 if (json)
695 json_object_object_add(json, vni_str, json_evpn);
696 }
697
698 static void zl3vni_print_rmac_hash(struct hash_bucket *bucket, void *ctx)
699 {
700 struct zebra_mac *zrmac = NULL;
701 struct rmac_walk_ctx *wctx = NULL;
702 struct vty *vty = NULL;
703 struct json_object *json = NULL;
704 struct json_object *json_rmac = NULL;
705 char buf[PREFIX_STRLEN];
706
707 wctx = (struct rmac_walk_ctx *)ctx;
708 vty = wctx->vty;
709 json = wctx->json;
710 if (json)
711 json_rmac = json_object_new_object();
712 zrmac = (struct zebra_mac *)bucket->data;
713
714 if (!json) {
715 vty_out(vty, "%-17s %-21pI4\n",
716 prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)),
717 &zrmac->fwd_info.r_vtep_ip);
718 } else {
719 json_object_string_add(
720 json_rmac, "routerMac",
721 prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)));
722 json_object_string_addf(json_rmac, "vtepIp", "%pI4",
723 &zrmac->fwd_info.r_vtep_ip);
724 json_object_object_add(
725 json, prefix_mac2str(&zrmac->macaddr, buf, sizeof(buf)),
726 json_rmac);
727 }
728 }
729
730 /* print a specific L3 VNI entry */
731 static void zl3vni_print(struct zebra_l3vni *zl3vni, void **ctx)
732 {
733 char buf[PREFIX_STRLEN];
734 struct vty *vty = NULL;
735 json_object *json = NULL;
736 struct zebra_evpn *zevpn = NULL;
737 json_object *json_evpn_list = NULL;
738 struct listnode *node = NULL, *nnode = NULL;
739
740 vty = ctx[0];
741 json = ctx[1];
742
743 if (!json) {
744 vty_out(vty, "VNI: %u\n", zl3vni->vni);
745 vty_out(vty, " Type: %s\n", "L3");
746 vty_out(vty, " Tenant VRF: %s\n", zl3vni_vrf_name(zl3vni));
747 vty_out(vty, " Vlan: %u\n", zl3vni->vid);
748 vty_out(vty, " Bridge: %s\n",
749 zl3vni->bridge_if ? zl3vni->bridge_if->name : "-");
750 vty_out(vty, " Local Vtep Ip: %pI4\n",
751 &zl3vni->local_vtep_ip);
752 vty_out(vty, " Vxlan-Intf: %s\n",
753 zl3vni_vxlan_if_name(zl3vni));
754 vty_out(vty, " SVI-If: %s\n", zl3vni_svi_if_name(zl3vni));
755 vty_out(vty, " State: %s\n", zl3vni_state2str(zl3vni));
756 vty_out(vty, " VNI Filter: %s\n",
757 CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)
758 ? "prefix-routes-only"
759 : "none");
760 vty_out(vty, " System MAC: %s\n",
761 zl3vni_sysmac2str(zl3vni, buf, sizeof(buf)));
762 vty_out(vty, " Router MAC: %s\n",
763 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
764 vty_out(vty, " L2 VNIs: ");
765 for (ALL_LIST_ELEMENTS(zl3vni->l2vnis, node, nnode, zevpn))
766 vty_out(vty, "%u ", zevpn->vni);
767 vty_out(vty, "\n");
768 } else {
769 json_evpn_list = json_object_new_array();
770 json_object_int_add(json, "vni", zl3vni->vni);
771 json_object_string_add(json, "type", "L3");
772 #if CONFDATE > 20240210
773 CPP_NOTICE("Drop `vrf` from JSON outputs")
774 #endif
775 json_object_string_add(json, "vrf", zl3vni_vrf_name(zl3vni));
776 json_object_string_add(json, "tenantVrf",
777 zl3vni_vrf_name(zl3vni));
778 json_object_string_addf(json, "localVtepIp", "%pI4",
779 &zl3vni->local_vtep_ip);
780 json_object_string_add(json, "vxlanIntf",
781 zl3vni_vxlan_if_name(zl3vni));
782 json_object_string_add(json, "sviIntf",
783 zl3vni_svi_if_name(zl3vni));
784 json_object_string_add(json, "state", zl3vni_state2str(zl3vni));
785 json_object_string_add(
786 json, "sysMac",
787 zl3vni_sysmac2str(zl3vni, buf, sizeof(buf)));
788 json_object_string_add(
789 json, "routerMac",
790 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
791 json_object_string_add(
792 json, "vniFilter",
793 CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)
794 ? "prefix-routes-only"
795 : "none");
796 for (ALL_LIST_ELEMENTS(zl3vni->l2vnis, node, nnode, zevpn)) {
797 json_object_array_add(json_evpn_list,
798 json_object_new_int(zevpn->vni));
799 }
800 json_object_object_add(json, "l2Vnis", json_evpn_list);
801 }
802 }
803
804 /* print a L3 VNI hash entry */
805 static void zl3vni_print_hash(struct hash_bucket *bucket, void *ctx[])
806 {
807 struct vty *vty = NULL;
808 json_object *json = NULL;
809 json_object *json_evpn = NULL;
810 struct zebra_l3vni *zl3vni = NULL;
811
812 vty = (struct vty *)ctx[0];
813 json = (json_object *)ctx[1];
814
815 zl3vni = (struct zebra_l3vni *)bucket->data;
816
817 if (!json) {
818 vty_out(vty, "%-10u %-4s %-21s %-8lu %-8lu %-15s %-37s\n",
819 zl3vni->vni, "L3", zl3vni_vxlan_if_name(zl3vni),
820 hashcount(zl3vni->rmac_table),
821 hashcount(zl3vni->nh_table), "n/a",
822 zl3vni_vrf_name(zl3vni));
823 } else {
824 char vni_str[VNI_STR_LEN];
825
826 snprintf(vni_str, VNI_STR_LEN, "%u", zl3vni->vni);
827 json_evpn = json_object_new_object();
828 json_object_int_add(json_evpn, "vni", zl3vni->vni);
829 json_object_string_add(json_evpn, "vxlanIf",
830 zl3vni_vxlan_if_name(zl3vni));
831 json_object_int_add(json_evpn, "numMacs",
832 hashcount(zl3vni->rmac_table));
833 json_object_int_add(json_evpn, "numArpNd",
834 hashcount(zl3vni->nh_table));
835 json_object_string_add(json_evpn, "numRemoteVteps", "n/a");
836 json_object_string_add(json_evpn, "type", "L3");
837 json_object_string_add(json_evpn, "tenantVrf",
838 zl3vni_vrf_name(zl3vni));
839 json_object_object_add(json, vni_str, json_evpn);
840 }
841 }
842
843 /* print a L3 VNI hash entry in detail*/
844 static void zl3vni_print_hash_detail(struct hash_bucket *bucket, void *data)
845 {
846 struct vty *vty = NULL;
847 struct zebra_l3vni *zl3vni = NULL;
848 json_object *json_array = NULL;
849 bool use_json = false;
850 struct zebra_evpn_show *zes = data;
851
852 vty = zes->vty;
853 json_array = zes->json;
854 use_json = zes->use_json;
855
856 zl3vni = (struct zebra_l3vni *)bucket->data;
857
858 zebra_vxlan_print_vni(vty, zes->zvrf, zl3vni->vni,
859 use_json, json_array);
860
861 if (!use_json)
862 vty_out(vty, "\n");
863 }
864
865 static int zvni_map_to_svi_ns(struct ns *ns,
866 void *_in_param,
867 void **_p_ifp)
868 {
869 struct zebra_ns *zns = ns->info;
870 struct route_node *rn;
871 struct zebra_from_svi_param *in_param =
872 (struct zebra_from_svi_param *)_in_param;
873 struct zebra_l2info_vlan *vl;
874 struct interface *tmp_if = NULL;
875 struct interface **p_ifp = (struct interface **)_p_ifp;
876 struct zebra_if *zif;
877
878 assert(in_param && p_ifp);
879
880 /* TODO: Optimize with a hash. */
881 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
882 tmp_if = (struct interface *)rn->info;
883 /* Check oper status of the SVI. */
884 if (!tmp_if || !if_is_operative(tmp_if))
885 continue;
886 zif = tmp_if->info;
887 if (!zif || zif->zif_type != ZEBRA_IF_VLAN
888 || zif->link != in_param->br_if)
889 continue;
890 vl = (struct zebra_l2info_vlan *)&zif->l2info.vl;
891
892 if (vl->vid == in_param->vid) {
893 *p_ifp = tmp_if;
894 return NS_WALK_STOP;
895 }
896 }
897 return NS_WALK_CONTINUE;
898 }
899
900 /* Map to SVI on bridge corresponding to specified VLAN. This can be one
901 * of two cases:
902 * (a) In the case of a VLAN-aware bridge, the SVI is a L3 VLAN interface
903 * linked to the bridge
904 * (b) In the case of a VLAN-unaware bridge, the SVI is the bridge interface
905 * itself
906 */
907 struct interface *zvni_map_to_svi(vlanid_t vid, struct interface *br_if)
908 {
909 struct interface *tmp_if = NULL;
910 struct zebra_if *zif;
911 struct zebra_from_svi_param in_param;
912 struct interface **p_ifp;
913 /* Defensive check, caller expected to invoke only with valid bridge. */
914 if (!br_if)
915 return NULL;
916
917 /* Determine if bridge is VLAN-aware or not */
918 zif = br_if->info;
919 assert(zif);
920 in_param.bridge_vlan_aware = IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(zif);
921 /* Check oper status of the SVI. */
922 if (!in_param.bridge_vlan_aware)
923 return if_is_operative(br_if) ? br_if : NULL;
924
925 in_param.vid = vid;
926 in_param.br_if = br_if;
927 in_param.zif = NULL;
928 p_ifp = &tmp_if;
929 /* Identify corresponding VLAN interface. */
930 ns_walk_func(zvni_map_to_svi_ns, (void *)&in_param,
931 (void **)p_ifp);
932 return tmp_if;
933 }
934
935 int zebra_evpn_vxlan_del(struct zebra_evpn *zevpn)
936 {
937 zevpn->vid = 0;
938 zevpn_vxlan_if_set(zevpn, zevpn->vxlan_if, false /* set */);
939 zevpn_bridge_if_set(zevpn, zevpn->bridge_if, false /* set */);
940
941 /* Remove references to the BUM mcast grp */
942 zebra_vxlan_sg_deref(zevpn->local_vtep_ip, zevpn->mcast_grp);
943
944 return zebra_evpn_del(zevpn);
945 }
946
947 static int zevpn_build_vni_hash_table(struct zebra_if *zif,
948 struct zebra_vxlan_vni *vnip, void *arg)
949 {
950 vni_t vni;
951 struct zebra_evpn *zevpn;
952 struct zebra_l3vni *zl3vni;
953 struct interface *ifp;
954 struct zebra_l2info_vxlan *vxl;
955 struct interface *br_if;
956
957 ifp = zif->ifp;
958 vxl = &zif->l2info.vxl;
959 vni = vnip->vni;
960
961 if (IS_ZEBRA_DEBUG_VXLAN)
962 zlog_debug("Build vni table for vni %u for Intf %s", vni,
963 ifp->name);
964
965 /* L3-VNI and L2-VNI are handled seperately */
966 zl3vni = zl3vni_lookup(vni);
967 if (zl3vni) {
968
969 if (IS_ZEBRA_DEBUG_VXLAN)
970 zlog_debug(
971 "create L3-VNI hash for Intf %s(%u) L3-VNI %u",
972 ifp->name, ifp->ifindex, vni);
973
974 /* associate with vxlan_if */
975 zl3vni->local_vtep_ip = vxl->vtep_ip;
976 zl3vni->vxlan_if = ifp;
977
978 /*
979 * we need to associate with SVI.
980 * we can associate with svi-if only after association
981 * with vxlan-intf is complete
982 */
983 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
984
985 /* Associate l3vni to mac-vlan and extract VRR MAC */
986 zl3vni->mac_vlan_if = zl3vni_map_to_mac_vlan_if(zl3vni);
987
988 if (IS_ZEBRA_DEBUG_VXLAN)
989 zlog_debug(
990 "create l3vni %u svi_if %s mac_vlan_if %s", vni,
991 zl3vni->svi_if ? zl3vni->svi_if->name : "NIL",
992 zl3vni->mac_vlan_if ? zl3vni->mac_vlan_if->name
993 : "NIL");
994
995 if (is_l3vni_oper_up(zl3vni))
996 zebra_vxlan_process_l3vni_oper_up(zl3vni);
997
998 } else {
999 struct interface *vlan_if = NULL;
1000
1001 if (IS_ZEBRA_DEBUG_VXLAN)
1002 zlog_debug(
1003 "Create L2-VNI hash for intf %s(%u) L2-VNI %u local IP %pI4",
1004 ifp->name, ifp->ifindex, vni, &vxl->vtep_ip);
1005
1006 /*
1007 * EVPN hash entry is expected to exist, if the BGP process is
1008 * killed
1009 */
1010 zevpn = zebra_evpn_lookup(vni);
1011 if (zevpn) {
1012 zlog_debug(
1013 "EVPN hash already present for IF %s(%u) L2-VNI %u",
1014 ifp->name, ifp->ifindex, vni);
1015
1016 /*
1017 * Inform BGP if intf is up and mapped to
1018 * bridge.
1019 */
1020 if (if_is_operative(ifp) && zif->brslave_info.br_if)
1021 zebra_evpn_send_add_to_client(zevpn);
1022
1023 /* Send Local MAC-entries to client */
1024 zebra_evpn_send_mac_list_to_client(zevpn);
1025
1026 /* Send Loval Neighbor entries to client */
1027 zebra_evpn_send_neigh_to_client(zevpn);
1028 } else {
1029 zevpn = zebra_evpn_add(vni);
1030 if (!zevpn) {
1031 zlog_debug(
1032 "Failed to add EVPN hash, IF %s(%u) L2-VNI %u",
1033 ifp->name, ifp->ifindex, vni);
1034 return 0;
1035 }
1036
1037 if (zevpn->local_vtep_ip.s_addr !=
1038 vxl->vtep_ip.s_addr ||
1039 zevpn->mcast_grp.s_addr != vnip->mcast_grp.s_addr) {
1040 zebra_vxlan_sg_deref(zevpn->local_vtep_ip,
1041 zevpn->mcast_grp);
1042 zebra_vxlan_sg_ref(vxl->vtep_ip,
1043 vnip->mcast_grp);
1044 zevpn->local_vtep_ip = vxl->vtep_ip;
1045 zevpn->mcast_grp = vnip->mcast_grp;
1046 /* on local vtep-ip check if ES
1047 * orig-ip needs to be updated
1048 */
1049 zebra_evpn_es_set_base_evpn(zevpn);
1050 }
1051 zevpn_vxlan_if_set(zevpn, ifp, true /* set */);
1052 br_if = zif->brslave_info.br_if;
1053 zevpn_bridge_if_set(zevpn, br_if, true /* set */);
1054 vlan_if = zvni_map_to_svi(vnip->access_vlan, br_if);
1055 if (vlan_if) {
1056 zevpn->vid = vnip->access_vlan;
1057 zevpn->svi_if = vlan_if;
1058 zevpn->vrf_id = vlan_if->vrf->vrf_id;
1059 zl3vni = zl3vni_from_vrf(vlan_if->vrf->vrf_id);
1060 if (zl3vni)
1061 listnode_add_sort(zl3vni->l2vnis,
1062 zevpn);
1063 }
1064
1065 /*
1066 * Inform BGP if intf is up and mapped to
1067 * bridge.
1068 */
1069 if (if_is_operative(ifp) && zif->brslave_info.br_if)
1070 zebra_evpn_send_add_to_client(zevpn);
1071 }
1072 }
1073
1074 return 0;
1075 }
1076
1077 static int zevpn_build_hash_table_zns(struct ns *ns,
1078 void *param_in __attribute__((unused)),
1079 void **param_out __attribute__((unused)))
1080 {
1081 struct zebra_ns *zns = ns->info;
1082 struct route_node *rn;
1083 struct interface *ifp;
1084 struct zebra_vrf *zvrf;
1085
1086 zvrf = zebra_vrf_get_evpn();
1087
1088 /* Walk VxLAN interfaces and create EVPN hash. */
1089 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
1090 struct zebra_if *zif;
1091 struct zebra_l2info_vxlan *vxl;
1092
1093 ifp = (struct interface *)rn->info;
1094 if (!ifp)
1095 continue;
1096 zif = ifp->info;
1097 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
1098 continue;
1099
1100 vxl = &zif->l2info.vxl;
1101 /* link of VXLAN interface should be in zebra_evpn_vrf */
1102 if (zvrf->zns->ns_id != vxl->link_nsid) {
1103 if (IS_ZEBRA_DEBUG_VXLAN)
1104 zlog_debug(
1105 "Intf %s(%u) link not in same "
1106 "namespace than BGP EVPN core instance ",
1107 ifp->name, ifp->ifindex);
1108 continue;
1109 }
1110
1111 if (IS_ZEBRA_DEBUG_VXLAN)
1112 zlog_debug("Building vni table for %s-if %s",
1113 IS_ZEBRA_VXLAN_IF_VNI(zif) ? "vni" : "svd",
1114 ifp->name);
1115
1116 zebra_vxlan_if_vni_iterate(zif, zevpn_build_vni_hash_table,
1117 NULL);
1118 }
1119 return NS_WALK_CONTINUE;
1120 }
1121
1122 /*
1123 * Build the VNI hash table by going over the VxLAN interfaces. This
1124 * is called when EVPN (advertise-all-vni) is enabled.
1125 */
1126
1127 static void zevpn_build_hash_table(void)
1128 {
1129 ns_walk_func(zevpn_build_hash_table_zns, NULL, NULL);
1130 }
1131
1132 /*
1133 * Cleanup EVPN/VTEP and update kernel
1134 */
1135 static void zebra_evpn_vxlan_cleanup_all(struct hash_bucket *bucket, void *arg)
1136 {
1137 struct zebra_evpn *zevpn = NULL;
1138 struct zebra_l3vni *zl3vni = NULL;
1139
1140 zevpn = (struct zebra_evpn *)bucket->data;
1141
1142 /* remove l2vni from l2vni's tenant-vrf l3-vni list */
1143 zl3vni = zl3vni_from_vrf(zevpn->vrf_id);
1144 if (zl3vni)
1145 listnode_delete(zl3vni->l2vnis, zevpn);
1146
1147 zebra_evpn_cleanup_all(bucket, arg);
1148 }
1149
1150 /* cleanup L3VNI */
1151 static void zl3vni_cleanup_all(struct hash_bucket *bucket, void *args)
1152 {
1153 struct zebra_l3vni *zl3vni = NULL;
1154
1155 zl3vni = (struct zebra_l3vni *)bucket->data;
1156
1157 zebra_vxlan_process_l3vni_oper_down(zl3vni);
1158 }
1159
1160 static void rb_find_or_add_host(struct host_rb_tree_entry *hrbe,
1161 const struct prefix *host)
1162 {
1163 struct host_rb_entry lookup;
1164 struct host_rb_entry *hle;
1165
1166 memset(&lookup, 0, sizeof(lookup));
1167 memcpy(&lookup.p, host, sizeof(*host));
1168
1169 hle = RB_FIND(host_rb_tree_entry, hrbe, &lookup);
1170 if (hle)
1171 return;
1172
1173 hle = XCALLOC(MTYPE_HOST_PREFIX, sizeof(struct host_rb_entry));
1174 memcpy(hle, &lookup, sizeof(lookup));
1175
1176 RB_INSERT(host_rb_tree_entry, hrbe, hle);
1177 }
1178
1179 static void rb_delete_host(struct host_rb_tree_entry *hrbe, struct prefix *host)
1180 {
1181 struct host_rb_entry lookup;
1182 struct host_rb_entry *hle;
1183
1184 memset(&lookup, 0, sizeof(lookup));
1185 memcpy(&lookup.p, host, sizeof(*host));
1186
1187 hle = RB_FIND(host_rb_tree_entry, hrbe, &lookup);
1188 if (hle) {
1189 RB_REMOVE(host_rb_tree_entry, hrbe, hle);
1190 XFREE(MTYPE_HOST_PREFIX, hle);
1191 }
1192
1193 return;
1194 }
1195
1196 /*
1197 * Look up MAC hash entry.
1198 */
1199 static struct zebra_mac *zl3vni_rmac_lookup(struct zebra_l3vni *zl3vni,
1200 const struct ethaddr *rmac)
1201 {
1202 struct zebra_mac tmp;
1203 struct zebra_mac *pmac;
1204
1205 memset(&tmp, 0, sizeof(tmp));
1206 memcpy(&tmp.macaddr, rmac, ETH_ALEN);
1207 pmac = hash_lookup(zl3vni->rmac_table, &tmp);
1208
1209 return pmac;
1210 }
1211
1212 /*
1213 * Callback to allocate RMAC hash entry.
1214 */
1215 static void *zl3vni_rmac_alloc(void *p)
1216 {
1217 const struct zebra_mac *tmp_rmac = p;
1218 struct zebra_mac *zrmac;
1219
1220 zrmac = XCALLOC(MTYPE_L3VNI_MAC, sizeof(struct zebra_mac));
1221 *zrmac = *tmp_rmac;
1222
1223 return ((void *)zrmac);
1224 }
1225
1226 /*
1227 * Add RMAC entry to l3-vni
1228 */
1229 static struct zebra_mac *zl3vni_rmac_add(struct zebra_l3vni *zl3vni,
1230 const struct ethaddr *rmac)
1231 {
1232 struct zebra_mac tmp_rmac;
1233 struct zebra_mac *zrmac = NULL;
1234
1235 memset(&tmp_rmac, 0, sizeof(tmp_rmac));
1236 memcpy(&tmp_rmac.macaddr, rmac, ETH_ALEN);
1237 zrmac = hash_get(zl3vni->rmac_table, &tmp_rmac, zl3vni_rmac_alloc);
1238 zrmac->nh_list = list_new();
1239 zrmac->nh_list->cmp = (int (*)(void *, void *))l3vni_rmac_nh_list_cmp;
1240 zrmac->nh_list->del = (void (*)(void *))l3vni_rmac_nh_free;
1241
1242 SET_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE);
1243 SET_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC);
1244
1245 return zrmac;
1246 }
1247
1248 /*
1249 * Delete MAC entry.
1250 */
1251 static int zl3vni_rmac_del(struct zebra_l3vni *zl3vni, struct zebra_mac *zrmac)
1252 {
1253 struct zebra_mac *tmp_rmac;
1254
1255 /* free the list of nh list*/
1256 list_delete(&zrmac->nh_list);
1257
1258 tmp_rmac = hash_release(zl3vni->rmac_table, zrmac);
1259 XFREE(MTYPE_L3VNI_MAC, tmp_rmac);
1260
1261 return 0;
1262 }
1263
1264 /*
1265 * Install remote RMAC into the forwarding plane.
1266 */
1267 static int zl3vni_rmac_install(struct zebra_l3vni *zl3vni,
1268 struct zebra_mac *zrmac)
1269 {
1270 const struct zebra_if *zif = NULL, *br_zif = NULL;
1271 const struct zebra_vxlan_vni *vni;
1272 const struct interface *br_ifp;
1273 enum zebra_dplane_result res;
1274 vlanid_t vid;
1275
1276 if (!(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE))
1277 || !(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC)))
1278 return 0;
1279
1280 zif = zl3vni->vxlan_if->info;
1281 if (!zif)
1282 return -1;
1283
1284 br_ifp = zif->brslave_info.br_if;
1285 if (br_ifp == NULL)
1286 return -1;
1287
1288 vni = zebra_vxlan_if_vni_find(zif, zl3vni->vni);
1289
1290 br_zif = (const struct zebra_if *)br_ifp->info;
1291
1292 if (IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(br_zif))
1293 vid = vni->access_vlan;
1294 else
1295 vid = 0;
1296
1297 res = dplane_rem_mac_add(zl3vni->vxlan_if, br_ifp, vid, &zrmac->macaddr,
1298 vni->vni, zrmac->fwd_info.r_vtep_ip, 0, 0,
1299 false /*was_static*/);
1300 if (res != ZEBRA_DPLANE_REQUEST_FAILURE)
1301 return 0;
1302 else
1303 return -1;
1304 }
1305
1306 /*
1307 * Uninstall remote RMAC from the forwarding plane.
1308 */
1309 static int zl3vni_rmac_uninstall(struct zebra_l3vni *zl3vni,
1310 struct zebra_mac *zrmac)
1311 {
1312 const struct zebra_if *zif = NULL, *br_zif;
1313 const struct zebra_vxlan_vni *vni;
1314 const struct interface *br_ifp;
1315 vlanid_t vid;
1316 enum zebra_dplane_result res;
1317
1318 if (!(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE))
1319 || !(CHECK_FLAG(zrmac->flags, ZEBRA_MAC_REMOTE_RMAC)))
1320 return 0;
1321
1322 if (!zl3vni->vxlan_if) {
1323 if (IS_ZEBRA_DEBUG_VXLAN)
1324 zlog_debug(
1325 "RMAC %pEA on L3-VNI %u hash %p couldn't be uninstalled - no vxlan_if",
1326 &zrmac->macaddr, zl3vni->vni, zl3vni);
1327 return -1;
1328 }
1329
1330 zif = zl3vni->vxlan_if->info;
1331 if (!zif)
1332 return -1;
1333
1334 br_ifp = zif->brslave_info.br_if;
1335 if (br_ifp == NULL)
1336 return -1;
1337
1338 vni = zebra_vxlan_if_vni_find(zif, zl3vni->vni);
1339
1340 br_zif = (const struct zebra_if *)br_ifp->info;
1341 if (IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(br_zif))
1342 vid = vni->access_vlan;
1343 else
1344 vid = 0;
1345
1346 res = dplane_rem_mac_del(zl3vni->vxlan_if, br_ifp, vid, &zrmac->macaddr,
1347 vni->vni, zrmac->fwd_info.r_vtep_ip);
1348 if (res != ZEBRA_DPLANE_REQUEST_FAILURE)
1349 return 0;
1350 else
1351 return -1;
1352 }
1353
1354 /* handle rmac add */
1355 static int zl3vni_remote_rmac_add(struct zebra_l3vni *zl3vni,
1356 const struct ethaddr *rmac,
1357 const struct ipaddr *vtep_ip)
1358 {
1359 struct zebra_mac *zrmac = NULL;
1360 struct ipaddr *vtep = NULL;
1361
1362 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
1363 if (!zrmac) {
1364
1365 /* Create the RMAC entry, or update its vtep, if necessary. */
1366 zrmac = zl3vni_rmac_add(zl3vni, rmac);
1367 if (!zrmac) {
1368 zlog_debug(
1369 "Failed to add RMAC %pEA L3VNI %u Remote VTEP %pIA",
1370 rmac, zl3vni->vni, vtep_ip);
1371 return -1;
1372 }
1373 memset(&zrmac->fwd_info, 0, sizeof(zrmac->fwd_info));
1374 zrmac->fwd_info.r_vtep_ip = vtep_ip->ipaddr_v4;
1375
1376 vtep = XCALLOC(MTYPE_EVPN_VTEP, sizeof(struct ipaddr));
1377 memcpy(vtep, vtep_ip, sizeof(struct ipaddr));
1378 if (!listnode_add_sort_nodup(zrmac->nh_list, (void *)vtep))
1379 XFREE(MTYPE_EVPN_VTEP, vtep);
1380
1381 /* Send RMAC for FPM processing */
1382 hook_call(zebra_rmac_update, zrmac, zl3vni, false,
1383 "new RMAC added");
1384
1385 /* install rmac in kernel */
1386 zl3vni_rmac_install(zl3vni, zrmac);
1387 } else if (!IPV4_ADDR_SAME(&zrmac->fwd_info.r_vtep_ip,
1388 &vtep_ip->ipaddr_v4)) {
1389 if (IS_ZEBRA_DEBUG_VXLAN)
1390 zlog_debug(
1391 "L3VNI %u Remote VTEP change(%pI4 -> %pIA) for RMAC %pEA",
1392 zl3vni->vni, &zrmac->fwd_info.r_vtep_ip,
1393 vtep_ip, rmac);
1394
1395 zrmac->fwd_info.r_vtep_ip = vtep_ip->ipaddr_v4;
1396
1397 vtep = XCALLOC(MTYPE_EVPN_VTEP, sizeof(struct ipaddr));
1398 memcpy(vtep, vtep_ip, sizeof(struct ipaddr));
1399 if (!listnode_add_sort_nodup(zrmac->nh_list, (void *)vtep))
1400 XFREE(MTYPE_EVPN_VTEP, vtep);
1401
1402 /* install rmac in kernel */
1403 zl3vni_rmac_install(zl3vni, zrmac);
1404 }
1405
1406 return 0;
1407 }
1408
1409
1410 /* handle rmac delete */
1411 static void zl3vni_remote_rmac_del(struct zebra_l3vni *zl3vni,
1412 struct zebra_mac *zrmac,
1413 struct ipaddr *vtep_ip)
1414 {
1415 struct ipaddr ipv4_vtep;
1416
1417 if (!zl3vni_nh_lookup(zl3vni, vtep_ip)) {
1418 memset(&ipv4_vtep, 0, sizeof(ipv4_vtep));
1419 ipv4_vtep.ipa_type = IPADDR_V4;
1420 if (vtep_ip->ipa_type == IPADDR_V6)
1421 ipv4_mapped_ipv6_to_ipv4(&vtep_ip->ipaddr_v6,
1422 &ipv4_vtep.ipaddr_v4);
1423 else
1424 memcpy(&(ipv4_vtep.ipaddr_v4), &vtep_ip->ipaddr_v4,
1425 sizeof(struct in_addr));
1426
1427 /* remove nh from rmac's list */
1428 l3vni_rmac_nh_list_nh_delete(zl3vni, zrmac, &ipv4_vtep);
1429 /* delete nh is same as current selected, fall back to
1430 * one present in the list
1431 */
1432 if (IPV4_ADDR_SAME(&zrmac->fwd_info.r_vtep_ip,
1433 &ipv4_vtep.ipaddr_v4) &&
1434 listcount(zrmac->nh_list)) {
1435 struct ipaddr *vtep;
1436
1437 vtep = listgetdata(listhead(zrmac->nh_list));
1438 zrmac->fwd_info.r_vtep_ip = vtep->ipaddr_v4;
1439 if (IS_ZEBRA_DEBUG_VXLAN)
1440 zlog_debug(
1441 "L3VNI %u Remote VTEP nh change(%pIA -> %pI4) for RMAC %pEA",
1442 zl3vni->vni, &ipv4_vtep,
1443 &zrmac->fwd_info.r_vtep_ip,
1444 &zrmac->macaddr);
1445
1446 /* install rmac in kernel */
1447 zl3vni_rmac_install(zl3vni, zrmac);
1448 }
1449
1450 if (!listcount(zrmac->nh_list)) {
1451 /* uninstall from kernel */
1452 zl3vni_rmac_uninstall(zl3vni, zrmac);
1453
1454 /* Send RMAC for FPM processing */
1455 hook_call(zebra_rmac_update, zrmac, zl3vni, true,
1456 "RMAC deleted");
1457
1458 if (IS_ZEBRA_DEBUG_VXLAN)
1459 zlog_debug(
1460 "L3VNI %u RMAC %pEA vtep_ip %pIA delete",
1461 zl3vni->vni, &zrmac->macaddr, vtep_ip);
1462
1463 /* del the rmac entry */
1464 zl3vni_rmac_del(zl3vni, zrmac);
1465 }
1466 }
1467 }
1468
1469 /*
1470 * Common code for look up of nh hash entry.
1471 */
1472 static struct zebra_neigh *_nh_lookup(struct zebra_l3vni *zl3vni,
1473 const struct ipaddr *ip)
1474 {
1475 struct zebra_neigh tmp;
1476 struct zebra_neigh *n;
1477
1478 memset(&tmp, 0, sizeof(tmp));
1479 memcpy(&tmp.ip, ip, sizeof(struct ipaddr));
1480
1481 if (zl3vni)
1482 n = hash_lookup(zl3vni->nh_table, &tmp);
1483 else
1484 n = hash_lookup(svd_nh_table, &tmp);
1485
1486 return n;
1487 }
1488
1489 /*
1490 * Look up nh hash entry on a l3-vni.
1491 */
1492 static struct zebra_neigh *zl3vni_nh_lookup(struct zebra_l3vni *zl3vni,
1493 const struct ipaddr *ip)
1494 {
1495 return _nh_lookup(zl3vni, ip);
1496 }
1497
1498 /*
1499 * Look up nh hash entry on a SVD.
1500 */
1501 static struct zebra_neigh *svd_nh_lookup(const struct ipaddr *ip)
1502 {
1503 return _nh_lookup(NULL, ip);
1504 }
1505
1506 /*
1507 * Callback to allocate NH hash entry on L3-VNI.
1508 */
1509 static void *zl3vni_nh_alloc(void *p)
1510 {
1511 const struct zebra_neigh *tmp_n = p;
1512 struct zebra_neigh *n;
1513
1514 n = XCALLOC(MTYPE_L3NEIGH, sizeof(struct zebra_neigh));
1515 *n = *tmp_n;
1516
1517 return ((void *)n);
1518 }
1519
1520 /*
1521 * Common code for neigh add.
1522 */
1523 static struct zebra_neigh *_nh_add(struct zebra_l3vni *zl3vni,
1524 const struct ipaddr *ip,
1525 const struct ethaddr *mac)
1526 {
1527 struct zebra_neigh tmp_n;
1528 struct zebra_neigh *n = NULL;
1529
1530 memset(&tmp_n, 0, sizeof(tmp_n));
1531 memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr));
1532
1533 if (zl3vni)
1534 n = hash_get(zl3vni->nh_table, &tmp_n, zl3vni_nh_alloc);
1535 else
1536 n = hash_get(svd_nh_table, &tmp_n, zl3vni_nh_alloc);
1537
1538 assert(n);
1539
1540 RB_INIT(host_rb_tree_entry, &n->host_rb);
1541
1542 memcpy(&n->emac, mac, ETH_ALEN);
1543 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE);
1544 SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE_NH);
1545
1546 return n;
1547 }
1548
1549 /*
1550 * Add neighbor entry.
1551 */
1552 static struct zebra_neigh *zl3vni_nh_add(struct zebra_l3vni *zl3vni,
1553 const struct ipaddr *ip,
1554 const struct ethaddr *mac)
1555 {
1556 return _nh_add(zl3vni, ip, mac);
1557 }
1558
1559 /*
1560 * Delete neighbor entry.
1561 */
1562 static int zl3vni_nh_del(struct zebra_l3vni *zl3vni, struct zebra_neigh *n)
1563 {
1564 struct zebra_neigh *tmp_n;
1565 struct host_rb_entry *hle;
1566
1567 while (!RB_EMPTY(host_rb_tree_entry, &n->host_rb)) {
1568 hle = RB_ROOT(host_rb_tree_entry, &n->host_rb);
1569
1570 RB_REMOVE(host_rb_tree_entry, &n->host_rb, hle);
1571 XFREE(MTYPE_HOST_PREFIX, hle);
1572 }
1573
1574 tmp_n = hash_release(zl3vni->nh_table, n);
1575 XFREE(MTYPE_L3NEIGH, tmp_n);
1576
1577 return 0;
1578 }
1579
1580 /*
1581 * Add Single VXlan Device neighbor entry.
1582 */
1583 static struct zebra_neigh *svd_nh_add(const struct ipaddr *ip,
1584 const struct ethaddr *mac)
1585 {
1586 return _nh_add(NULL, ip, mac);
1587 }
1588
1589 /*
1590 * Del Single VXlan Device neighbor entry.
1591 */
1592 static int svd_nh_del(struct zebra_neigh *n)
1593 {
1594 if (n->refcnt > 0)
1595 return -1;
1596
1597 hash_release(svd_nh_table, n);
1598 XFREE(MTYPE_L3NEIGH, n);
1599
1600 return 0;
1601 }
1602
1603 /*
1604 * Common code to install remote nh as neigh into the kernel.
1605 */
1606 static int _nh_install(struct zebra_l3vni *zl3vni, struct interface *ifp,
1607 struct zebra_neigh *n)
1608 {
1609 uint8_t flags;
1610 int ret = 0;
1611
1612 if (zl3vni && !is_l3vni_oper_up(zl3vni))
1613 return -1;
1614
1615 if (!(n->flags & ZEBRA_NEIGH_REMOTE)
1616 || !(n->flags & ZEBRA_NEIGH_REMOTE_NH))
1617 return 0;
1618
1619 flags = DPLANE_NTF_EXT_LEARNED;
1620 if (n->flags & ZEBRA_NEIGH_ROUTER_FLAG)
1621 flags |= DPLANE_NTF_ROUTER;
1622
1623 dplane_rem_neigh_add(ifp, &n->ip, &n->emac, flags,
1624 false /*was_static*/);
1625
1626 return ret;
1627 }
1628
1629 /*
1630 * Common code to uninstall remote nh from the kernel.
1631 */
1632 static int _nh_uninstall(struct interface *ifp, struct zebra_neigh *n)
1633 {
1634 if (!(n->flags & ZEBRA_NEIGH_REMOTE)
1635 || !(n->flags & ZEBRA_NEIGH_REMOTE_NH))
1636 return 0;
1637
1638 if (!ifp || !if_is_operative(ifp))
1639 return 0;
1640
1641 dplane_rem_neigh_delete(ifp, &n->ip);
1642
1643 return 0;
1644 }
1645
1646 /*
1647 * Install remote nh as neigh into the kernel.
1648 */
1649 static int zl3vni_nh_install(struct zebra_l3vni *zl3vni, struct zebra_neigh *n)
1650 {
1651 return _nh_install(zl3vni, zl3vni->svi_if, n);
1652 }
1653
1654 /*
1655 * Uninstall remote nh from the kernel.
1656 */
1657 static int zl3vni_nh_uninstall(struct zebra_l3vni *zl3vni,
1658 struct zebra_neigh *n)
1659 {
1660 return _nh_uninstall(zl3vni->svi_if, n);
1661 }
1662
1663 /*
1664 * Install SVD remote nh as neigh into the kernel.
1665 */
1666 static int svd_nh_install(struct zebra_l3vni *zl3vni, struct zebra_neigh *n)
1667 {
1668 return _nh_install(zl3vni, zl3vni->vxlan_if, n);
1669 }
1670
1671 /*
1672 * Uninstall SVD remote nh from the kernel.
1673 */
1674 static int svd_nh_uninstall(struct zebra_l3vni *zl3vni, struct zebra_neigh *n)
1675 {
1676 return _nh_uninstall(zl3vni->vxlan_if, n);
1677 }
1678
1679 /* Add remote vtep as a neigh entry */
1680 static int zl3vni_remote_nh_add(struct zebra_l3vni *zl3vni,
1681 const struct ipaddr *vtep_ip,
1682 const struct ethaddr *rmac,
1683 const struct prefix *host_prefix)
1684 {
1685 struct zebra_neigh *nh = NULL;
1686
1687 /* Create the next hop entry, or update its mac, if necessary. */
1688 nh = zl3vni_nh_lookup(zl3vni, vtep_ip);
1689 if (!nh) {
1690 nh = zl3vni_nh_add(zl3vni, vtep_ip, rmac);
1691 if (!nh) {
1692 zlog_debug(
1693 "Failed to add NH %pIA as Neigh (RMAC %pEA L3-VNI %u prefix %pFX)",
1694 vtep_ip, rmac, zl3vni->vni, host_prefix);
1695 return -1;
1696 }
1697
1698 /* install the nh neigh in kernel */
1699 zl3vni_nh_install(zl3vni, nh);
1700 } else if (memcmp(&nh->emac, rmac, ETH_ALEN) != 0) {
1701 if (IS_ZEBRA_DEBUG_VXLAN)
1702 zlog_debug(
1703 "L3VNI %u RMAC change(%pEA --> %pEA) for nexthop %pIA, prefix %pFX",
1704 zl3vni->vni, &nh->emac, rmac, vtep_ip,
1705 host_prefix);
1706
1707 memcpy(&nh->emac, rmac, ETH_ALEN);
1708 /* install (update) the nh neigh in kernel */
1709 zl3vni_nh_install(zl3vni, nh);
1710 }
1711
1712 rb_find_or_add_host(&nh->host_rb, host_prefix);
1713
1714 return 0;
1715 }
1716
1717 /* Del remote vtep as a neigh entry */
1718 static void zl3vni_remote_nh_del(struct zebra_l3vni *zl3vni,
1719 struct zebra_neigh *nh,
1720 struct prefix *host_prefix)
1721 {
1722 rb_delete_host(&nh->host_rb, host_prefix);
1723
1724 if (RB_EMPTY(host_rb_tree_entry, &nh->host_rb)) {
1725 /* uninstall from kernel */
1726 zl3vni_nh_uninstall(zl3vni, nh);
1727
1728 /* delete the nh entry */
1729 zl3vni_nh_del(zl3vni, nh);
1730 }
1731 }
1732
1733 /* Add remote vtep as a SVD neigh entry */
1734 static int svd_remote_nh_add(struct zebra_l3vni *zl3vni,
1735 const struct ipaddr *vtep_ip,
1736 const struct ethaddr *rmac,
1737 const struct prefix *host_prefix)
1738 {
1739 struct zebra_neigh *nh = NULL;
1740
1741 /* SVD backed VNI check */
1742 if (!IS_ZL3VNI_SVD_BACKED(zl3vni))
1743 return 0;
1744
1745 /* Create the SVD next hop entry, or update its mac, if necessary. */
1746 nh = svd_nh_lookup(vtep_ip);
1747 if (!nh) {
1748 nh = svd_nh_add(vtep_ip, rmac);
1749 if (!nh) {
1750 zlog_debug(
1751 "Failed to add NH %pIA as SVD Neigh (RMAC %pEA prefix %pFX)",
1752 vtep_ip, rmac, host_prefix);
1753 return -1;
1754 }
1755
1756 } else if (memcmp(&nh->emac, rmac, ETH_ALEN) != 0) {
1757 if (IS_ZEBRA_DEBUG_VXLAN)
1758 zlog_debug(
1759 "SVD RMAC change(%pEA --> %pEA) for nexthop %pIA, prefix %pFX",
1760 &nh->emac, rmac, vtep_ip, host_prefix);
1761
1762 memcpy(&nh->emac, rmac, ETH_ALEN);
1763 /* install (update) the nh neigh in kernel */
1764 svd_nh_install(zl3vni, nh);
1765
1766 /* Don't increment refcnt change */
1767 return 0;
1768 }
1769
1770 nh->refcnt++;
1771
1772 if (IS_ZEBRA_DEBUG_VXLAN)
1773 zlog_debug("SVD NH ADD refcnt (%u) for nexthop %pIA",
1774 nh->refcnt, vtep_ip);
1775
1776 /*
1777 * Install the nh neigh in kernel if this is the first time we
1778 * have seen it.
1779 */
1780 if (nh->refcnt == 1)
1781 svd_nh_install(zl3vni, nh);
1782
1783 return 0;
1784 }
1785
1786 /* Del remote vtep as a SVD neigh entry */
1787 static int svd_remote_nh_del(struct zebra_l3vni *zl3vni,
1788 const struct ipaddr *vtep_ip)
1789 {
1790 struct zebra_neigh *nh;
1791
1792 /* SVD backed VNI check */
1793 if (!IS_ZL3VNI_SVD_BACKED(zl3vni))
1794 return 0;
1795
1796 nh = svd_nh_lookup(vtep_ip);
1797 if (!nh) {
1798 zlog_debug("Failed to del NH %pIA as SVD Neigh", vtep_ip);
1799
1800 return -1;
1801 }
1802
1803 nh->refcnt--;
1804
1805 if (IS_ZEBRA_DEBUG_VXLAN)
1806 zlog_debug("SVD NH Del refcnt (%u) for nexthop %pIA",
1807 nh->refcnt, vtep_ip);
1808
1809 /* Last refcnt on NH, remove it completely. */
1810 if (nh->refcnt == 0) {
1811 svd_nh_uninstall(zl3vni, nh);
1812 svd_nh_del(nh);
1813 }
1814
1815 return 0;
1816 }
1817
1818 /* handle neigh update from kernel - the only thing of interest is to
1819 * readd stale entries.
1820 */
1821 static int zl3vni_local_nh_add_update(struct zebra_l3vni *zl3vni,
1822 struct ipaddr *ip, uint16_t state)
1823 {
1824 #ifdef GNU_LINUX
1825 struct zebra_neigh *n = NULL;
1826
1827 n = zl3vni_nh_lookup(zl3vni, ip);
1828 if (!n)
1829 return 0;
1830
1831 /* all next hop neigh are remote and installed by frr.
1832 * If the kernel has aged this entry, re-install.
1833 */
1834 if (state & NUD_STALE)
1835 zl3vni_nh_install(zl3vni, n);
1836 #endif
1837 return 0;
1838 }
1839
1840 /* handle neigh delete from kernel */
1841 static int zl3vni_local_nh_del(struct zebra_l3vni *zl3vni, struct ipaddr *ip)
1842 {
1843 struct zebra_neigh *n = NULL;
1844
1845 n = zl3vni_nh_lookup(zl3vni, ip);
1846 if (!n)
1847 return 0;
1848
1849 /* all next hop neigh are remote and installed by frr.
1850 * If we get an age out notification for these neigh entries, we have to
1851 * install it back
1852 */
1853 zl3vni_nh_install(zl3vni, n);
1854
1855 return 0;
1856 }
1857
1858 /*
1859 * Hash function for L3 VNI.
1860 */
1861 static unsigned int l3vni_hash_keymake(const void *p)
1862 {
1863 const struct zebra_l3vni *zl3vni = p;
1864
1865 return jhash_1word(zl3vni->vni, 0);
1866 }
1867
1868 /*
1869 * Compare 2 L3 VNI hash entries.
1870 */
1871 static bool l3vni_hash_cmp(const void *p1, const void *p2)
1872 {
1873 const struct zebra_l3vni *zl3vni1 = p1;
1874 const struct zebra_l3vni *zl3vni2 = p2;
1875
1876 return (zl3vni1->vni == zl3vni2->vni);
1877 }
1878
1879 /*
1880 * Callback to allocate L3 VNI hash entry.
1881 */
1882 static void *zl3vni_alloc(void *p)
1883 {
1884 struct zebra_l3vni *zl3vni = NULL;
1885 const struct zebra_l3vni *tmp_l3vni = p;
1886
1887 zl3vni = XCALLOC(MTYPE_ZL3VNI, sizeof(struct zebra_l3vni));
1888 zl3vni->vni = tmp_l3vni->vni;
1889 return ((void *)zl3vni);
1890 }
1891
1892 /*
1893 * Look up L3 VNI hash entry.
1894 */
1895 struct zebra_l3vni *zl3vni_lookup(vni_t vni)
1896 {
1897 struct zebra_l3vni tmp_l3vni;
1898 struct zebra_l3vni *zl3vni = NULL;
1899
1900 memset(&tmp_l3vni, 0, sizeof(tmp_l3vni));
1901 tmp_l3vni.vni = vni;
1902 zl3vni = hash_lookup(zrouter.l3vni_table, &tmp_l3vni);
1903
1904 return zl3vni;
1905 }
1906
1907 /*
1908 * Add L3 VNI hash entry.
1909 */
1910 static struct zebra_l3vni *zl3vni_add(vni_t vni, vrf_id_t vrf_id)
1911 {
1912 struct zebra_l3vni tmp_zl3vni;
1913 struct zebra_l3vni *zl3vni = NULL;
1914
1915 memset(&tmp_zl3vni, 0, sizeof(tmp_zl3vni));
1916 tmp_zl3vni.vni = vni;
1917
1918 zl3vni = hash_get(zrouter.l3vni_table, &tmp_zl3vni, zl3vni_alloc);
1919
1920 zl3vni->vrf_id = vrf_id;
1921 zl3vni->svi_if = NULL;
1922 zl3vni->vxlan_if = NULL;
1923 zl3vni->l2vnis = list_new();
1924 zl3vni->l2vnis->cmp = zebra_evpn_list_cmp;
1925
1926 /* Create hash table for remote RMAC */
1927 zl3vni->rmac_table = zebra_mac_db_create("Zebra L3-VNI RMAC-Table");
1928
1929 /* Create hash table for neighbors */
1930 zl3vni->nh_table = zebra_neigh_db_create("Zebra L3-VNI next-hop table");
1931
1932 return zl3vni;
1933 }
1934
1935 /*
1936 * Delete L3 VNI hash entry.
1937 */
1938 static int zl3vni_del(struct zebra_l3vni *zl3vni)
1939 {
1940 struct zebra_l3vni *tmp_zl3vni;
1941
1942 /* free the list of l2vnis */
1943 list_delete(&zl3vni->l2vnis);
1944 zl3vni->l2vnis = NULL;
1945
1946 /* Free the rmac table */
1947 hash_free(zl3vni->rmac_table);
1948 zl3vni->rmac_table = NULL;
1949
1950 /* Free the nh table */
1951 hash_free(zl3vni->nh_table);
1952 zl3vni->nh_table = NULL;
1953
1954 /* Free the VNI hash entry and allocated memory. */
1955 tmp_zl3vni = hash_release(zrouter.l3vni_table, zl3vni);
1956 XFREE(MTYPE_ZL3VNI, tmp_zl3vni);
1957
1958 return 0;
1959 }
1960
1961 static int zl3vni_map_to_vxlan_if_ns(struct ns *ns,
1962 void *_zl3vni,
1963 void **_pifp)
1964 {
1965 struct zebra_ns *zns = ns->info;
1966 struct zebra_l3vni *zl3vni = (struct zebra_l3vni *)_zl3vni;
1967 struct route_node *rn = NULL;
1968 struct interface *ifp = NULL;
1969 struct zebra_vrf *zvrf;
1970
1971 zvrf = zebra_vrf_get_evpn();
1972
1973 assert(_pifp);
1974
1975 /* loop through all vxlan-interface */
1976 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
1977
1978 struct zebra_if *zif = NULL;
1979 struct zebra_l2info_vxlan *vxl;
1980 struct zebra_vxlan_vni *vni = NULL;
1981
1982 ifp = (struct interface *)rn->info;
1983 if (!ifp)
1984 continue;
1985
1986 zif = ifp->info;
1987 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
1988 continue;
1989
1990 vxl = &zif->l2info.vxl;
1991 vni = zebra_vxlan_if_vni_find(zif, zl3vni->vni);
1992 if (!vni || vni->vni != zl3vni->vni)
1993 continue;
1994
1995 /* link of VXLAN interface should be in zebra_evpn_vrf */
1996 if (zvrf->zns->ns_id != vxl->link_nsid) {
1997 if (IS_ZEBRA_DEBUG_VXLAN)
1998 zlog_debug(
1999 "Intf %s(%u) VNI %u, link not in same "
2000 "namespace than BGP EVPN core instance ",
2001 ifp->name, ifp->ifindex, vni->vni);
2002 continue;
2003 }
2004
2005
2006 zl3vni->local_vtep_ip = zif->l2info.vxl.vtep_ip;
2007 *_pifp = (void *)ifp;
2008 return NS_WALK_STOP;
2009 }
2010
2011 return NS_WALK_CONTINUE;
2012 }
2013
2014 struct interface *zl3vni_map_to_vxlan_if(struct zebra_l3vni *zl3vni)
2015 {
2016 struct interface **p_ifp;
2017 struct interface *ifp = NULL;
2018
2019 p_ifp = &ifp;
2020
2021 ns_walk_func(zl3vni_map_to_vxlan_if_ns,
2022 (void *)zl3vni, (void **)p_ifp);
2023 return ifp;
2024 }
2025
2026 struct interface *zl3vni_map_to_svi_if(struct zebra_l3vni *zl3vni)
2027 {
2028 struct zebra_if *zif = NULL; /* zebra_if for vxlan_if */
2029 struct zebra_vxlan_vni *vni = NULL; /* vni info in vxlan_if */
2030
2031 if (!zl3vni)
2032 return NULL;
2033
2034 if (!zl3vni->vxlan_if)
2035 return NULL;
2036
2037 zif = zl3vni->vxlan_if->info;
2038 if (!zif)
2039 return NULL;
2040
2041 vni = zebra_vxlan_if_vni_find(zif, zl3vni->vni);
2042 if (!vni)
2043 return NULL;
2044
2045 return zvni_map_to_svi(vni->access_vlan, zif->brslave_info.br_if);
2046 }
2047
2048 struct interface *zl3vni_map_to_mac_vlan_if(struct zebra_l3vni *zl3vni)
2049 {
2050 struct zebra_if *zif = NULL; /* zebra_if for vxlan_if */
2051
2052 if (!zl3vni)
2053 return NULL;
2054
2055 if (!zl3vni->vxlan_if)
2056 return NULL;
2057
2058 zif = zl3vni->vxlan_if->info;
2059 if (!zif)
2060 return NULL;
2061
2062 return zebra_evpn_map_to_macvlan(zif->brslave_info.br_if,
2063 zl3vni->svi_if);
2064 }
2065
2066
2067 struct zebra_l3vni *zl3vni_from_vrf(vrf_id_t vrf_id)
2068 {
2069 struct zebra_vrf *zvrf = NULL;
2070
2071 zvrf = zebra_vrf_lookup_by_id(vrf_id);
2072 if (!zvrf)
2073 return NULL;
2074
2075 return zl3vni_lookup(zvrf->l3vni);
2076 }
2077
2078 static int zl3vni_from_svi_ns(struct ns *ns, void *_in_param, void **_p_zl3vni)
2079 {
2080 int found = 0;
2081 vni_t vni_id = 0;
2082 struct zebra_ns *zns = ns->info;
2083 struct zebra_l3vni **p_zl3vni = (struct zebra_l3vni **)_p_zl3vni;
2084 struct zebra_from_svi_param *in_param =
2085 (struct zebra_from_svi_param *)_in_param;
2086 struct route_node *rn = NULL;
2087 struct interface *tmp_if = NULL;
2088 struct zebra_if *zif = NULL;
2089 struct zebra_if *br_zif = NULL;
2090
2091 assert(in_param && p_zl3vni);
2092
2093 br_zif = in_param->br_if->info;
2094 assert(br_zif);
2095
2096 if (in_param->bridge_vlan_aware) {
2097 vni_id = zebra_l2_bridge_if_vni_find(br_zif, in_param->vid);
2098 if (vni_id)
2099 found = 1;
2100 } else {
2101 /* loop through all vxlan-interface */
2102 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
2103 tmp_if = (struct interface *)rn->info;
2104 if (!tmp_if)
2105 continue;
2106 zif = tmp_if->info;
2107 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
2108 continue;
2109 if (!if_is_operative(tmp_if))
2110 continue;
2111
2112 if (zif->brslave_info.br_if != in_param->br_if)
2113 continue;
2114
2115 vni_id = zebra_vxlan_if_access_vlan_vni_find(
2116 zif, in_param->br_if);
2117 if (vni_id) {
2118 found = 1;
2119 break;
2120 }
2121 }
2122 }
2123
2124 if (!found)
2125 return NS_WALK_CONTINUE;
2126
2127 *p_zl3vni = zl3vni_lookup(vni_id);
2128 return NS_WALK_STOP;
2129 }
2130
2131 /*
2132 * Map SVI and associated bridge to a VNI. This is invoked upon getting
2133 * neighbor notifications, to see if they are of interest.
2134 */
2135 static struct zebra_l3vni *zl3vni_from_svi(struct interface *ifp,
2136 struct interface *br_if)
2137 {
2138 struct zebra_l3vni *zl3vni = NULL;
2139 struct zebra_if *zif = NULL;
2140 struct zebra_from_svi_param in_param = {};
2141 struct zebra_l3vni **p_zl3vni;
2142
2143 if (!br_if)
2144 return NULL;
2145
2146 /* Make sure the linked interface is a bridge. */
2147 if (!IS_ZEBRA_IF_BRIDGE(br_if))
2148 return NULL;
2149 in_param.br_if = br_if;
2150
2151 /* Determine if bridge is VLAN-aware or not */
2152 zif = br_if->info;
2153 assert(zif);
2154 in_param.bridge_vlan_aware = IS_ZEBRA_IF_BRIDGE_VLAN_AWARE(zif);
2155 if (in_param.bridge_vlan_aware) {
2156 struct zebra_l2info_vlan *vl;
2157
2158 if (!IS_ZEBRA_IF_VLAN(ifp))
2159 return NULL;
2160
2161 zif = ifp->info;
2162 assert(zif);
2163 vl = &zif->l2info.vl;
2164 in_param.vid = vl->vid;
2165 }
2166
2167 /* See if this interface (or interface plus VLAN Id) maps to a VxLAN */
2168 /* TODO: Optimize with a hash. */
2169
2170 p_zl3vni = &zl3vni;
2171
2172 ns_walk_func(zl3vni_from_svi_ns, (void *)&in_param, (void **)p_zl3vni);
2173 return zl3vni;
2174 }
2175
2176 vni_t vni_id_from_svi(struct interface *ifp, struct interface *br_if)
2177 {
2178 vni_t vni = 0;
2179 struct zebra_evpn *zevpn = NULL;
2180 struct zebra_l3vni *zl3vni = NULL;
2181
2182 /* Check if an L3VNI belongs to this SVI interface.
2183 * If not, check if an L2VNI belongs to this SVI interface.
2184 */
2185 zl3vni = zl3vni_from_svi(ifp, br_if);
2186 if (zl3vni)
2187 vni = zl3vni->vni;
2188 else {
2189 zevpn = zebra_evpn_from_svi(ifp, br_if);
2190 if (zevpn)
2191 vni = zevpn->vni;
2192 }
2193
2194 return vni;
2195 }
2196
2197 static inline void zl3vni_get_vrr_rmac(struct zebra_l3vni *zl3vni,
2198 struct ethaddr *rmac)
2199 {
2200 if (!zl3vni)
2201 return;
2202
2203 if (!is_l3vni_oper_up(zl3vni))
2204 return;
2205
2206 if (zl3vni->mac_vlan_if && if_is_operative(zl3vni->mac_vlan_if))
2207 memcpy(rmac->octet, zl3vni->mac_vlan_if->hw_addr, ETH_ALEN);
2208 }
2209
2210 /*
2211 * Inform BGP about l3-vni.
2212 */
2213 static int zl3vni_send_add_to_client(struct zebra_l3vni *zl3vni)
2214 {
2215 struct stream *s = NULL;
2216 struct zserv *client = NULL;
2217 struct ethaddr svi_rmac, vrr_rmac = {.octet = {0} };
2218 struct zebra_vrf *zvrf;
2219 bool is_anycast_mac = true;
2220
2221 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
2222 /* BGP may not be running. */
2223 if (!client)
2224 return 0;
2225
2226 zvrf = zebra_vrf_lookup_by_id(zl3vni->vrf_id);
2227 assert(zvrf);
2228
2229 /* get the svi and vrr rmac values */
2230 memset(&svi_rmac, 0, sizeof(svi_rmac));
2231 zl3vni_get_svi_rmac(zl3vni, &svi_rmac);
2232 zl3vni_get_vrr_rmac(zl3vni, &vrr_rmac);
2233
2234 /* In absence of vrr mac use svi mac as anycast MAC value */
2235 if (is_zero_mac(&vrr_rmac)) {
2236 memcpy(&vrr_rmac, &svi_rmac, ETH_ALEN);
2237 is_anycast_mac = false;
2238 }
2239
2240 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2241
2242 /* The message is used for both vni add and/or update like
2243 * vrr mac is added for l3vni SVI.
2244 */
2245 zclient_create_header(s, ZEBRA_L3VNI_ADD, zl3vni_vrf_id(zl3vni));
2246 stream_putl(s, zl3vni->vni);
2247 stream_put(s, &svi_rmac, sizeof(struct ethaddr));
2248 stream_put_in_addr(s, &zl3vni->local_vtep_ip);
2249 stream_put(s, &zl3vni->filter, sizeof(int));
2250 stream_putl(s, zl3vni->svi_if->ifindex);
2251 stream_put(s, &vrr_rmac, sizeof(struct ethaddr));
2252 stream_putl(s, is_anycast_mac);
2253
2254 /* Write packet size. */
2255 stream_putw_at(s, 0, stream_get_endp(s));
2256
2257 if (IS_ZEBRA_DEBUG_VXLAN)
2258 zlog_debug(
2259 "Send L3_VNI_ADD %u VRF %s RMAC %pEA VRR %pEA local-ip %pI4 filter %s to %s",
2260 zl3vni->vni, vrf_id_to_name(zl3vni_vrf_id(zl3vni)),
2261 &svi_rmac, &vrr_rmac, &zl3vni->local_vtep_ip,
2262 CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)
2263 ? "prefix-routes-only"
2264 : "none",
2265 zebra_route_string(client->proto));
2266
2267 client->l3vniadd_cnt++;
2268 return zserv_send_message(client, s);
2269 }
2270
2271 /*
2272 * Inform BGP about local l3-VNI deletion.
2273 */
2274 static int zl3vni_send_del_to_client(struct zebra_l3vni *zl3vni)
2275 {
2276 struct stream *s = NULL;
2277 struct zserv *client = NULL;
2278
2279 client = zserv_find_client(ZEBRA_ROUTE_BGP, 0);
2280 /* BGP may not be running. */
2281 if (!client)
2282 return 0;
2283
2284 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
2285
2286 zclient_create_header(s, ZEBRA_L3VNI_DEL, zl3vni_vrf_id(zl3vni));
2287 stream_putl(s, zl3vni->vni);
2288
2289 /* Write packet size. */
2290 stream_putw_at(s, 0, stream_get_endp(s));
2291
2292 if (IS_ZEBRA_DEBUG_VXLAN)
2293 zlog_debug("Send L3_VNI_DEL %u VRF %s to %s", zl3vni->vni,
2294 vrf_id_to_name(zl3vni_vrf_id(zl3vni)),
2295 zebra_route_string(client->proto));
2296
2297 client->l3vnidel_cnt++;
2298 return zserv_send_message(client, s);
2299 }
2300
2301 void zebra_vxlan_process_l3vni_oper_up(struct zebra_l3vni *zl3vni)
2302 {
2303 if (!zl3vni)
2304 return;
2305
2306 /* send l3vni add to BGP */
2307 zl3vni_send_add_to_client(zl3vni);
2308 }
2309
2310 void zebra_vxlan_process_l3vni_oper_down(struct zebra_l3vni *zl3vni)
2311 {
2312 if (!zl3vni)
2313 return;
2314
2315 /* send l3-vni del to BGP*/
2316 zl3vni_send_del_to_client(zl3vni);
2317 }
2318
2319 static void zevpn_add_to_l3vni_list(struct hash_bucket *bucket, void *ctxt)
2320 {
2321 struct zebra_evpn *zevpn = (struct zebra_evpn *)bucket->data;
2322 struct zebra_l3vni *zl3vni = (struct zebra_l3vni *)ctxt;
2323
2324 if (zevpn->vrf_id == zl3vni_vrf_id(zl3vni))
2325 listnode_add_sort(zl3vni->l2vnis, zevpn);
2326 }
2327
2328 /*
2329 * Handle transition of vni from l2 to l3 and vice versa.
2330 * This function handles only the L2VNI add/delete part of
2331 * the above transition.
2332 * L3VNI add/delete is handled by the calling functions.
2333 */
2334 static int zebra_vxlan_handle_vni_transition(struct zebra_vrf *zvrf, vni_t vni,
2335 int add)
2336 {
2337 struct zebra_evpn *zevpn = NULL;
2338 struct zebra_l3vni *zl3vni = NULL;
2339
2340 /* There is a possibility that VNI notification was already received
2341 * from kernel and we programmed it as L2-VNI
2342 * In such a case we need to delete this L2-VNI first, so
2343 * that it can be reprogrammed as L3-VNI in the system. It is also
2344 * possible that the vrf-vni mapping is removed from FRR while the vxlan
2345 * interface is still present in kernel. In this case to keep it
2346 * symmetric, we will delete the l3-vni and reprogram it as l2-vni
2347 */
2348 if (add) {
2349 /* Locate hash entry */
2350 zevpn = zebra_evpn_lookup(vni);
2351 if (!zevpn)
2352 return 0;
2353
2354 if (IS_ZEBRA_DEBUG_VXLAN)
2355 zlog_debug("Del L2-VNI %u - transition to L3-VNI", vni);
2356
2357 /* Delete EVPN from BGP. */
2358 zebra_evpn_send_del_to_client(zevpn);
2359
2360 zebra_evpn_neigh_del_all(zevpn, 0, 0, DEL_ALL_NEIGH);
2361 zebra_evpn_mac_del_all(zevpn, 0, 0, DEL_ALL_MAC);
2362
2363 /* Free up all remote VTEPs, if any. */
2364 zebra_evpn_vtep_del_all(zevpn, 1);
2365
2366 zl3vni = zl3vni_from_vrf(zevpn->vrf_id);
2367 if (zl3vni)
2368 listnode_delete(zl3vni->l2vnis, zevpn);
2369
2370 /* Delete the hash entry. */
2371 if (zebra_evpn_vxlan_del(zevpn)) {
2372 flog_err(EC_ZEBRA_VNI_DEL_FAILED,
2373 "Failed to del EVPN hash %p, VNI %u", zevpn,
2374 zevpn->vni);
2375 return -1;
2376 }
2377 } else {
2378 struct zebra_ns *zns;
2379 struct route_node *rn;
2380 struct interface *ifp;
2381 struct zebra_if *zif;
2382 struct zebra_vxlan_vni *vnip;
2383 struct zebra_l2info_vxlan *vxl;
2384 struct interface *vlan_if;
2385 bool found = false;
2386
2387 if (IS_ZEBRA_DEBUG_VXLAN)
2388 zlog_debug("Adding L2-VNI %u - transition from L3-VNI",
2389 vni);
2390
2391 /* Find VxLAN interface for this VNI. */
2392 zns = zebra_ns_lookup(NS_DEFAULT);
2393 for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) {
2394 ifp = (struct interface *)rn->info;
2395 if (!ifp)
2396 continue;
2397 zif = ifp->info;
2398 if (!zif || zif->zif_type != ZEBRA_IF_VXLAN)
2399 continue;
2400
2401 vxl = &zif->l2info.vxl;
2402 vnip = zebra_vxlan_if_vni_find(zif, vni);
2403 if (vnip) {
2404 found = true;
2405 break;
2406 }
2407 }
2408
2409 if (!found) {
2410 if (IS_ZEBRA_DEBUG_VXLAN)
2411 zlog_err(
2412 "Adding L2-VNI - Failed to find VxLAN interface for VNI %u",
2413 vni);
2414 return -1;
2415 }
2416
2417 /* Create VNI hash entry for L2VNI */
2418 zevpn = zebra_evpn_lookup(vni);
2419 if (zevpn)
2420 return 0;
2421
2422 zevpn = zebra_evpn_add(vni);
2423
2424 /* Find bridge interface for the VNI */
2425 vlan_if = zvni_map_to_svi(vnip->access_vlan,
2426 zif->brslave_info.br_if);
2427 if (vlan_if) {
2428 zevpn->vrf_id = vlan_if->vrf->vrf_id;
2429 zl3vni = zl3vni_from_vrf(vlan_if->vrf->vrf_id);
2430 if (zl3vni)
2431 listnode_add_sort_nodup(zl3vni->l2vnis, zevpn);
2432 }
2433
2434 zevpn->vxlan_if = ifp;
2435 zevpn->local_vtep_ip = vxl->vtep_ip;
2436
2437 /* Inform BGP if the VNI is up and mapped to a bridge. */
2438 if (if_is_operative(ifp) && zif->brslave_info.br_if) {
2439 zebra_evpn_send_add_to_client(zevpn);
2440 zebra_evpn_read_mac_neigh(zevpn, ifp);
2441 }
2442 }
2443
2444 return 0;
2445 }
2446
2447 /* delete and uninstall rmac hash entry */
2448 static void zl3vni_del_rmac_hash_entry(struct hash_bucket *bucket, void *ctx)
2449 {
2450 struct zebra_mac *zrmac = NULL;
2451 struct zebra_l3vni *zl3vni = NULL;
2452
2453 zrmac = (struct zebra_mac *)bucket->data;
2454 zl3vni = (struct zebra_l3vni *)ctx;
2455 zl3vni_rmac_uninstall(zl3vni, zrmac);
2456
2457 /* Send RMAC for FPM processing */
2458 hook_call(zebra_rmac_update, zrmac, zl3vni, true, "RMAC deleted");
2459
2460 zl3vni_rmac_del(zl3vni, zrmac);
2461 }
2462
2463 /* delete and uninstall nh hash entry */
2464 static void zl3vni_del_nh_hash_entry(struct hash_bucket *bucket, void *ctx)
2465 {
2466 struct zebra_neigh *n = NULL;
2467 struct zebra_l3vni *zl3vni = NULL;
2468
2469 n = (struct zebra_neigh *)bucket->data;
2470 zl3vni = (struct zebra_l3vni *)ctx;
2471 zl3vni_nh_uninstall(zl3vni, n);
2472 zl3vni_nh_del(zl3vni, n);
2473 }
2474
2475 /* re-add remote rmac if needed */
2476 static int zebra_vxlan_readd_remote_rmac(struct zebra_l3vni *zl3vni,
2477 struct ethaddr *rmac)
2478 {
2479 struct zebra_mac *zrmac = NULL;
2480
2481 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
2482 if (!zrmac)
2483 return 0;
2484
2485 if (IS_ZEBRA_DEBUG_VXLAN)
2486 zlog_debug("Del remote RMAC %pEA L3VNI %u - readd",
2487 rmac, zl3vni->vni);
2488
2489 zl3vni_rmac_install(zl3vni, zrmac);
2490 return 0;
2491 }
2492
2493 /* Public functions */
2494
2495 int is_l3vni_for_prefix_routes_only(vni_t vni)
2496 {
2497 struct zebra_l3vni *zl3vni = NULL;
2498
2499 zl3vni = zl3vni_lookup(vni);
2500 if (!zl3vni)
2501 return 0;
2502
2503 return CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY) ? 1 : 0;
2504 }
2505
2506 /* handle evpn route in vrf table */
2507 void zebra_vxlan_evpn_vrf_route_add(vrf_id_t vrf_id, const struct ethaddr *rmac,
2508 const struct ipaddr *vtep_ip,
2509 const struct prefix *host_prefix)
2510 {
2511 struct zebra_l3vni *zl3vni = NULL;
2512 struct ipaddr ipv4_vtep;
2513
2514 zl3vni = zl3vni_from_vrf(vrf_id);
2515 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
2516 return;
2517
2518 /*
2519 * add the next hop neighbor -
2520 * neigh to be installed is the ipv6 nexthop neigh
2521 */
2522 zl3vni_remote_nh_add(zl3vni, vtep_ip, rmac, host_prefix);
2523
2524 /* Add SVD next hop neighbor */
2525 svd_remote_nh_add(zl3vni, vtep_ip, rmac, host_prefix);
2526
2527 /*
2528 * if the remote vtep is a ipv4 mapped ipv6 address convert it to ipv4
2529 * address. Rmac is programmed against the ipv4 vtep because we only
2530 * support ipv4 tunnels in the h/w right now
2531 */
2532 memset(&ipv4_vtep, 0, sizeof(ipv4_vtep));
2533 ipv4_vtep.ipa_type = IPADDR_V4;
2534 if (vtep_ip->ipa_type == IPADDR_V6)
2535 ipv4_mapped_ipv6_to_ipv4(&vtep_ip->ipaddr_v6,
2536 &(ipv4_vtep.ipaddr_v4));
2537 else
2538 memcpy(&(ipv4_vtep.ipaddr_v4), &vtep_ip->ipaddr_v4,
2539 sizeof(struct in_addr));
2540
2541 /*
2542 * add the rmac - remote rmac to be installed is against the ipv4
2543 * nexthop address
2544 */
2545 zl3vni_remote_rmac_add(zl3vni, rmac, &ipv4_vtep);
2546 }
2547
2548 /* handle evpn vrf route delete */
2549 void zebra_vxlan_evpn_vrf_route_del(vrf_id_t vrf_id,
2550 struct ipaddr *vtep_ip,
2551 struct prefix *host_prefix)
2552 {
2553 struct zebra_l3vni *zl3vni = NULL;
2554 struct zebra_neigh *nh = NULL;
2555 struct zebra_mac *zrmac = NULL;
2556
2557 zl3vni = zl3vni_from_vrf(vrf_id);
2558 if (!zl3vni)
2559 return;
2560
2561 /* find the next hop entry and rmac entry */
2562 nh = zl3vni_nh_lookup(zl3vni, vtep_ip);
2563 if (!nh)
2564 return;
2565 zrmac = zl3vni_rmac_lookup(zl3vni, &nh->emac);
2566
2567 /* delete the next hop entry */
2568 zl3vni_remote_nh_del(zl3vni, nh, host_prefix);
2569
2570 /* Delete SVD next hop entry */
2571 svd_remote_nh_del(zl3vni, vtep_ip);
2572
2573 /* delete the rmac entry */
2574 if (zrmac)
2575 zl3vni_remote_rmac_del(zl3vni, zrmac, vtep_ip);
2576 }
2577
2578 void zebra_vxlan_print_specific_rmac_l3vni(struct vty *vty, vni_t l3vni,
2579 struct ethaddr *rmac, bool use_json)
2580 {
2581 struct zebra_l3vni *zl3vni = NULL;
2582 struct zebra_mac *zrmac = NULL;
2583 json_object *json = NULL;
2584
2585 if (!is_evpn_enabled()) {
2586 if (use_json)
2587 vty_out(vty, "{}\n");
2588 return;
2589 }
2590
2591 if (use_json)
2592 json = json_object_new_object();
2593
2594 zl3vni = zl3vni_lookup(l3vni);
2595 if (!zl3vni) {
2596 if (use_json)
2597 vty_out(vty, "{}\n");
2598 else
2599 vty_out(vty, "%% L3-VNI %u doesn't exist\n", l3vni);
2600 return;
2601 }
2602
2603 zrmac = zl3vni_rmac_lookup(zl3vni, rmac);
2604 if (!zrmac) {
2605 if (use_json)
2606 vty_out(vty, "{}\n");
2607 else
2608 vty_out(vty,
2609 "%% Requested RMAC doesn't exist in L3-VNI %u\n",
2610 l3vni);
2611 return;
2612 }
2613
2614 zl3vni_print_rmac(zrmac, vty, json);
2615
2616 if (use_json)
2617 vty_json(vty, json);
2618 }
2619
2620 void zebra_vxlan_print_rmacs_l3vni(struct vty *vty, vni_t l3vni, bool use_json)
2621 {
2622 struct zebra_l3vni *zl3vni;
2623 uint32_t num_rmacs;
2624 struct rmac_walk_ctx wctx;
2625 json_object *json = NULL;
2626
2627 if (!is_evpn_enabled())
2628 return;
2629
2630 zl3vni = zl3vni_lookup(l3vni);
2631 if (!zl3vni) {
2632 if (use_json)
2633 vty_out(vty, "{}\n");
2634 else
2635 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
2636 return;
2637 }
2638 num_rmacs = hashcount(zl3vni->rmac_table);
2639 if (!num_rmacs)
2640 return;
2641
2642 if (use_json)
2643 json = json_object_new_object();
2644
2645 memset(&wctx, 0, sizeof(wctx));
2646 wctx.vty = vty;
2647 wctx.json = json;
2648 if (!use_json) {
2649 vty_out(vty, "Number of Remote RMACs known for this VNI: %u\n",
2650 num_rmacs);
2651 vty_out(vty, "%-17s %-21s\n", "MAC", "Remote VTEP");
2652 } else
2653 json_object_int_add(json, "numRmacs", num_rmacs);
2654
2655 hash_iterate(zl3vni->rmac_table, zl3vni_print_rmac_hash, &wctx);
2656
2657 if (use_json)
2658 vty_json(vty, json);
2659 }
2660
2661 void zebra_vxlan_print_rmacs_all_l3vni(struct vty *vty, bool use_json)
2662 {
2663 json_object *json = NULL;
2664 void *args[2];
2665
2666 if (!is_evpn_enabled()) {
2667 if (use_json)
2668 vty_out(vty, "{}\n");
2669 return;
2670 }
2671
2672 if (use_json)
2673 json = json_object_new_object();
2674
2675 args[0] = vty;
2676 args[1] = json;
2677 hash_iterate(zrouter.l3vni_table,
2678 (void (*)(struct hash_bucket *,
2679 void *))zl3vni_print_rmac_hash_all_vni,
2680 args);
2681
2682 if (use_json)
2683 vty_json(vty, json);
2684 }
2685
2686 void zebra_vxlan_print_specific_nh_l3vni(struct vty *vty, vni_t l3vni,
2687 struct ipaddr *ip, bool use_json)
2688 {
2689 struct zebra_l3vni *zl3vni = NULL;
2690 struct zebra_neigh *n = NULL;
2691 json_object *json = NULL;
2692
2693 if (!is_evpn_enabled()) {
2694 if (use_json)
2695 vty_out(vty, "{}\n");
2696 return;
2697 }
2698
2699 if (use_json)
2700 json = json_object_new_object();
2701
2702 /* If vni=0 passed, assume svd lookup */
2703 if (!l3vni)
2704 n = svd_nh_lookup(ip);
2705 else {
2706 zl3vni = zl3vni_lookup(l3vni);
2707 if (!zl3vni) {
2708 if (use_json)
2709 vty_out(vty, "{}\n");
2710 else
2711 vty_out(vty, "%% L3-VNI %u does not exist\n",
2712 l3vni);
2713 return;
2714 }
2715
2716 n = zl3vni_nh_lookup(zl3vni, ip);
2717 }
2718
2719 if (!n) {
2720 if (use_json)
2721 vty_out(vty, "{}\n");
2722 else
2723 vty_out(vty,
2724 "%% Requested next-hop not present for L3-VNI %u\n",
2725 l3vni);
2726 return;
2727 }
2728
2729 zl3vni_print_nh(n, vty, json);
2730
2731 if (use_json)
2732 vty_json(vty, json);
2733 }
2734
2735 static void l3vni_print_nh_table(struct hash *nh_table, struct vty *vty,
2736 bool use_json)
2737 {
2738 uint32_t num_nh;
2739 struct nh_walk_ctx wctx;
2740 json_object *json = NULL;
2741
2742 num_nh = hashcount(nh_table);
2743 if (!num_nh)
2744 return;
2745
2746 if (use_json)
2747 json = json_object_new_object();
2748
2749 wctx.vty = vty;
2750 wctx.json = json;
2751 if (!use_json) {
2752 vty_out(vty, "Number of NH Neighbors known for this VNI: %u\n",
2753 num_nh);
2754 vty_out(vty, "%-15s %-17s\n", "IP", "RMAC");
2755 } else
2756 json_object_int_add(json, "numNextHops", num_nh);
2757
2758 hash_iterate(nh_table, zl3vni_print_nh_hash, &wctx);
2759
2760 if (use_json)
2761 vty_json(vty, json);
2762 }
2763
2764 void zebra_vxlan_print_nh_l3vni(struct vty *vty, vni_t l3vni, bool use_json)
2765 {
2766 struct zebra_l3vni *zl3vni = NULL;
2767
2768 if (!is_evpn_enabled()) {
2769 if (use_json)
2770 vty_out(vty, "{}\n");
2771 return;
2772 }
2773
2774 zl3vni = zl3vni_lookup(l3vni);
2775 if (!zl3vni) {
2776 if (use_json)
2777 vty_out(vty, "{}\n");
2778 else
2779 vty_out(vty, "%% L3-VNI %u does not exist\n", l3vni);
2780 return;
2781 }
2782
2783 l3vni_print_nh_table(zl3vni->nh_table, vty, use_json);
2784 }
2785
2786 void zebra_vxlan_print_nh_svd(struct vty *vty, bool use_json)
2787 {
2788 if (!is_evpn_enabled()) {
2789 if (use_json)
2790 vty_out(vty, "{}\n");
2791 return;
2792 }
2793
2794 l3vni_print_nh_table(svd_nh_table, vty, use_json);
2795 }
2796
2797 void zebra_vxlan_print_nh_all_l3vni(struct vty *vty, bool use_json)
2798 {
2799 json_object *json = NULL;
2800 void *args[2];
2801
2802 if (!is_evpn_enabled()) {
2803 if (use_json)
2804 vty_out(vty, "{}\n");
2805 return;
2806 }
2807
2808 if (use_json)
2809 json = json_object_new_object();
2810
2811 args[0] = vty;
2812 args[1] = json;
2813 hash_iterate(zrouter.l3vni_table,
2814 (void (*)(struct hash_bucket *,
2815 void *))zl3vni_print_nh_hash_all_vni,
2816 args);
2817
2818 if (use_json)
2819 vty_json(vty, json);
2820 }
2821
2822 /*
2823 * Display L3 VNI information (VTY command handler).
2824 */
2825 void zebra_vxlan_print_l3vni(struct vty *vty, vni_t vni, bool use_json)
2826 {
2827 void *args[2];
2828 json_object *json = NULL;
2829 struct zebra_l3vni *zl3vni = NULL;
2830
2831 if (!is_evpn_enabled()) {
2832 if (use_json)
2833 vty_out(vty, "{}\n");
2834 return;
2835 }
2836
2837 zl3vni = zl3vni_lookup(vni);
2838 if (!zl3vni) {
2839 if (use_json)
2840 vty_out(vty, "{}\n");
2841 else
2842 vty_out(vty, "%% VNI %u does not exist\n", vni);
2843 return;
2844 }
2845
2846 if (use_json)
2847 json = json_object_new_object();
2848
2849 args[0] = vty;
2850 args[1] = json;
2851 zl3vni_print(zl3vni, (void *)args);
2852
2853 if (use_json)
2854 vty_json(vty, json);
2855 }
2856
2857 void zebra_vxlan_print_vrf_vni(struct vty *vty, struct zebra_vrf *zvrf,
2858 json_object *json_vrfs)
2859 {
2860 char buf[ETHER_ADDR_STRLEN];
2861 struct zebra_l3vni *zl3vni = NULL;
2862
2863 zl3vni = zl3vni_lookup(zvrf->l3vni);
2864 if (!zl3vni)
2865 return;
2866
2867 if (!json_vrfs) {
2868 vty_out(vty, "%-37s %-10u %-20s %-20s %-5s %-18s\n",
2869 zvrf_name(zvrf), zl3vni->vni,
2870 zl3vni_vxlan_if_name(zl3vni),
2871 zl3vni_svi_if_name(zl3vni), zl3vni_state2str(zl3vni),
2872 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
2873 } else {
2874 json_object *json_vrf = NULL;
2875
2876 json_vrf = json_object_new_object();
2877 json_object_string_add(json_vrf, "vrf", zvrf_name(zvrf));
2878 json_object_int_add(json_vrf, "vni", zl3vni->vni);
2879 json_object_string_add(json_vrf, "vxlanIntf",
2880 zl3vni_vxlan_if_name(zl3vni));
2881 json_object_string_add(json_vrf, "sviIntf",
2882 zl3vni_svi_if_name(zl3vni));
2883 json_object_string_add(json_vrf, "state",
2884 zl3vni_state2str(zl3vni));
2885 json_object_string_add(
2886 json_vrf, "routerMac",
2887 zl3vni_rmac2str(zl3vni, buf, sizeof(buf)));
2888 json_object_array_add(json_vrfs, json_vrf);
2889 }
2890 }
2891
2892 /*
2893 * Display Neighbors for a VNI (VTY command handler).
2894 */
2895 void zebra_vxlan_print_neigh_vni(struct vty *vty, struct zebra_vrf *zvrf,
2896 vni_t vni, bool use_json)
2897 {
2898 struct zebra_evpn *zevpn;
2899 uint32_t num_neigh;
2900 struct neigh_walk_ctx wctx;
2901 json_object *json = NULL;
2902
2903 if (!is_evpn_enabled())
2904 return;
2905 zevpn = zebra_evpn_lookup(vni);
2906 if (!zevpn) {
2907 if (use_json)
2908 vty_out(vty, "{}\n");
2909 else
2910 vty_out(vty, "%% VNI %u does not exist\n", vni);
2911 return;
2912 }
2913 num_neigh = hashcount(zevpn->neigh_table);
2914 if (!num_neigh)
2915 return;
2916
2917 if (use_json)
2918 json = json_object_new_object();
2919
2920 /* Since we have IPv6 addresses to deal with which can vary widely in
2921 * size, we try to be a bit more elegant in display by first computing
2922 * the maximum width.
2923 */
2924 memset(&wctx, 0, sizeof(wctx));
2925 wctx.zevpn = zevpn;
2926 wctx.vty = vty;
2927 wctx.addr_width = 15;
2928 wctx.json = json;
2929 hash_iterate(zevpn->neigh_table, zebra_evpn_find_neigh_addr_width,
2930 &wctx);
2931
2932 if (!use_json) {
2933 vty_out(vty,
2934 "Number of ARPs (local and remote) known for this VNI: %u\n",
2935 num_neigh);
2936 zebra_evpn_print_neigh_hdr(vty, &wctx);
2937 } else
2938 json_object_int_add(json, "numArpNd", num_neigh);
2939
2940 hash_iterate(zevpn->neigh_table, zebra_evpn_print_neigh_hash, &wctx);
2941 if (use_json)
2942 vty_json(vty, json);
2943 }
2944
2945 /*
2946 * Display neighbors across all VNIs (VTY command handler).
2947 */
2948 void zebra_vxlan_print_neigh_all_vni(struct vty *vty, struct zebra_vrf *zvrf,
2949 bool print_dup, bool use_json)
2950 {
2951 json_object *json = NULL;
2952 void *args[3];
2953
2954 if (!is_evpn_enabled())
2955 return;
2956
2957 if (use_json)
2958 json = json_object_new_object();
2959
2960 args[0] = vty;
2961 args[1] = json;
2962 args[2] = (void *)(ptrdiff_t)print_dup;
2963
2964 hash_iterate(zvrf->evpn_table,
2965 (void (*)(struct hash_bucket *,
2966 void *))zevpn_print_neigh_hash_all_evpn,
2967 args);
2968 if (use_json)
2969 vty_json(vty, json);
2970 }
2971
2972 /*
2973 * Display neighbors across all VNIs in detail(VTY command handler).
2974 */
2975 void zebra_vxlan_print_neigh_all_vni_detail(struct vty *vty,
2976 struct zebra_vrf *zvrf,
2977 bool print_dup, bool use_json)
2978 {
2979 json_object *json = NULL;
2980 void *args[3];
2981
2982 if (!is_evpn_enabled())
2983 return;
2984
2985 if (use_json)
2986 json = json_object_new_object();
2987
2988 args[0] = vty;
2989 args[1] = json;
2990 args[2] = (void *)(ptrdiff_t)print_dup;
2991
2992 hash_iterate(zvrf->evpn_table,
2993 (void (*)(struct hash_bucket *,
2994 void *))zevpn_print_neigh_hash_all_evpn_detail,
2995 args);
2996 if (use_json)
2997 vty_json(vty, json);
2998 }
2999
3000 /*
3001 * Display specific neighbor for a VNI, if present (VTY command handler).
3002 */
3003 void zebra_vxlan_print_specific_neigh_vni(struct vty *vty,
3004 struct zebra_vrf *zvrf, vni_t vni,
3005 struct ipaddr *ip, bool use_json)
3006 {
3007 struct zebra_evpn *zevpn;
3008 struct zebra_neigh *n;
3009 json_object *json = NULL;
3010
3011 if (!is_evpn_enabled())
3012 return;
3013 zevpn = zebra_evpn_lookup(vni);
3014 if (!zevpn) {
3015 if (use_json)
3016 vty_out(vty, "{}\n");
3017 else
3018 vty_out(vty, "%% VNI %u does not exist\n", vni);
3019 return;
3020 }
3021 n = zebra_evpn_neigh_lookup(zevpn, ip);
3022 if (!n) {
3023 if (!use_json)
3024 vty_out(vty,
3025 "%% Requested neighbor does not exist in VNI %u\n",
3026 vni);
3027 return;
3028 }
3029 if (use_json)
3030 json = json_object_new_object();
3031
3032 zebra_evpn_print_neigh(n, vty, json);
3033
3034 if (use_json)
3035 vty_json(vty, json);
3036 }
3037
3038 /*
3039 * Display neighbors for a VNI from specific VTEP (VTY command handler).
3040 * By definition, these are remote neighbors.
3041 */
3042 void zebra_vxlan_print_neigh_vni_vtep(struct vty *vty, struct zebra_vrf *zvrf,
3043 vni_t vni, struct in_addr vtep_ip,
3044 bool use_json)
3045 {
3046 struct zebra_evpn *zevpn;
3047 uint32_t num_neigh;
3048 struct neigh_walk_ctx wctx;
3049 json_object *json = NULL;
3050
3051 if (!is_evpn_enabled())
3052 return;
3053 zevpn = zebra_evpn_lookup(vni);
3054 if (!zevpn) {
3055 if (use_json)
3056 vty_out(vty, "{}\n");
3057 else
3058 vty_out(vty, "%% VNI %u does not exist\n", vni);
3059 return;
3060 }
3061 num_neigh = hashcount(zevpn->neigh_table);
3062 if (!num_neigh)
3063 return;
3064
3065 if (use_json)
3066 json = json_object_new_object();
3067
3068 memset(&wctx, 0, sizeof(wctx));
3069 wctx.zevpn = zevpn;
3070 wctx.vty = vty;
3071 wctx.addr_width = 15;
3072 wctx.flags = SHOW_REMOTE_NEIGH_FROM_VTEP;
3073 wctx.r_vtep_ip = vtep_ip;
3074 wctx.json = json;
3075 hash_iterate(zevpn->neigh_table, zebra_evpn_find_neigh_addr_width,
3076 &wctx);
3077 hash_iterate(zevpn->neigh_table, zebra_evpn_print_neigh_hash, &wctx);
3078
3079 if (use_json)
3080 vty_json(vty, json);
3081 }
3082
3083 /*
3084 * Display Duplicate detected Neighbors for a VNI
3085 * (VTY command handler).
3086 */
3087 void zebra_vxlan_print_neigh_vni_dad(struct vty *vty,
3088 struct zebra_vrf *zvrf,
3089 vni_t vni,
3090 bool use_json)
3091 {
3092 struct zebra_evpn *zevpn;
3093 uint32_t num_neigh;
3094 struct neigh_walk_ctx wctx;
3095 json_object *json = NULL;
3096
3097 if (!is_evpn_enabled())
3098 return;
3099
3100 zevpn = zebra_evpn_lookup(vni);
3101 if (!zevpn) {
3102 vty_out(vty, "%% VNI %u does not exist\n", vni);
3103 return;
3104 }
3105
3106 num_neigh = hashcount(zevpn->neigh_table);
3107 if (!num_neigh)
3108 return;
3109
3110 num_neigh = num_dup_detected_neighs(zevpn);
3111 if (!num_neigh)
3112 return;
3113
3114 if (use_json)
3115 json = json_object_new_object();
3116
3117 /* Since we have IPv6 addresses to deal with which can vary widely in
3118 * size, we try to be a bit more elegant in display by first computing
3119 * the maximum width.
3120 */
3121 memset(&wctx, 0, sizeof(wctx));
3122 wctx.zevpn = zevpn;
3123 wctx.vty = vty;
3124 wctx.addr_width = 15;
3125 wctx.json = json;
3126 hash_iterate(zevpn->neigh_table, zebra_evpn_find_neigh_addr_width,
3127 &wctx);
3128
3129 if (!use_json) {
3130 vty_out(vty,
3131 "Number of ARPs (local and remote) known for this VNI: %u\n",
3132 num_neigh);
3133 vty_out(vty, "%*s %-6s %-8s %-17s %-30s\n",
3134 -wctx.addr_width, "IP", "Type",
3135 "State", "MAC", "Remote ES/VTEP");
3136 } else
3137 json_object_int_add(json, "numArpNd", num_neigh);
3138
3139 hash_iterate(zevpn->neigh_table, zebra_evpn_print_dad_neigh_hash,
3140 &wctx);
3141
3142 if (use_json)
3143 vty_json(vty, json);
3144 }
3145
3146 /*
3147 * Display MACs for a VNI (VTY command handler).
3148 */
3149 void zebra_vxlan_print_macs_vni(struct vty *vty, struct zebra_vrf *zvrf,
3150 vni_t vni, bool use_json, bool detail)
3151 {
3152 struct zebra_evpn *zevpn;
3153 uint32_t num_macs;
3154 struct mac_walk_ctx wctx;
3155 json_object *json = NULL;
3156 json_object *json_mac = NULL;
3157
3158 if (!is_evpn_enabled())
3159 return;
3160 zevpn = zebra_evpn_lookup(vni);
3161 if (!zevpn) {
3162 if (use_json)
3163 vty_out(vty, "{}\n");
3164 else
3165 vty_out(vty, "%% VNI %u does not exist\n", vni);
3166 return;
3167 }
3168 num_macs = num_valid_macs(zevpn);
3169 if (!num_macs)
3170 return;
3171
3172 if (use_json) {
3173 json = json_object_new_object();
3174 json_mac = json_object_new_object();
3175 }
3176
3177 memset(&wctx, 0, sizeof(wctx));
3178 wctx.zevpn = zevpn;
3179 wctx.vty = vty;
3180 wctx.json = json_mac;
3181
3182 if (!use_json) {
3183 if (detail) {
3184 vty_out(vty, "\nVNI %u #MACs (local and remote) %u\n\n",
3185 zevpn->vni, num_macs);
3186 } else {
3187 vty_out(vty,
3188 "Number of MACs (local and remote) known for this VNI: %u\n",
3189 num_macs);
3190 vty_out(vty,
3191 "Flags: N=sync-neighs, I=local-inactive, P=peer-active, X=peer-proxy\n");
3192 vty_out(vty, "%-17s %-6s %-5s %-30s %-5s %s\n", "MAC",
3193 "Type", "Flags", "Intf/Remote ES/VTEP", "VLAN",
3194 "Seq #'s");
3195 }
3196 } else
3197 json_object_int_add(json, "numMacs", num_macs);
3198
3199 if (detail)
3200 hash_iterate(zevpn->mac_table, zebra_evpn_print_mac_hash_detail,
3201 &wctx);
3202 else
3203 hash_iterate(zevpn->mac_table, zebra_evpn_print_mac_hash,
3204 &wctx);
3205
3206 if (use_json) {
3207 json_object_object_add(json, "macs", json_mac);
3208 vty_json(vty, json);
3209 }
3210 }
3211
3212 /*
3213 * Display MACs for all VNIs (VTY command handler).
3214 */
3215 void zebra_vxlan_print_macs_all_vni(struct vty *vty, struct zebra_vrf *zvrf,
3216 bool print_dup, bool use_json)
3217 {
3218 struct mac_walk_ctx wctx;
3219 json_object *json = NULL;
3220
3221 if (!is_evpn_enabled()) {
3222 if (use_json)
3223 vty_out(vty, "{}\n");
3224 return;
3225 }
3226 if (use_json)
3227 json = json_object_new_object();
3228
3229 memset(&wctx, 0, sizeof(wctx));
3230 wctx.vty = vty;
3231 wctx.json = json;
3232 wctx.print_dup = print_dup;
3233 hash_iterate(zvrf->evpn_table, zevpn_print_mac_hash_all_evpn, &wctx);
3234
3235 if (use_json)
3236 vty_json(vty, json);
3237 }
3238
3239 /*
3240 * Display MACs in detail for all VNIs (VTY command handler).
3241 */
3242 void zebra_vxlan_print_macs_all_vni_detail(struct vty *vty,
3243 struct zebra_vrf *zvrf,
3244 bool print_dup, bool use_json)
3245 {
3246 struct mac_walk_ctx wctx;
3247 json_object *json = NULL;
3248
3249 if (!is_evpn_enabled()) {
3250 if (use_json)
3251 vty_out(vty, "{}\n");
3252 return;
3253 }
3254 if (use_json)
3255 json = json_object_new_object();
3256
3257 memset(&wctx, 0, sizeof(wctx));
3258 wctx.vty = vty;
3259 wctx.json = json;
3260 wctx.print_dup = print_dup;
3261 hash_iterate(zvrf->evpn_table, zevpn_print_mac_hash_all_evpn_detail,
3262 &wctx);
3263
3264 if (use_json)
3265 vty_json(vty, json);
3266 }
3267
3268 /*
3269 * Display MACs for all VNIs (VTY command handler).
3270 */
3271 void zebra_vxlan_print_macs_all_vni_vtep(struct vty *vty,
3272 struct zebra_vrf *zvrf,
3273 struct in_addr vtep_ip, bool use_json)
3274 {
3275 struct mac_walk_ctx wctx;
3276 json_object *json = NULL;
3277
3278 if (!is_evpn_enabled())
3279 return;
3280
3281 if (use_json)
3282 json = json_object_new_object();
3283
3284 memset(&wctx, 0, sizeof(wctx));
3285 wctx.vty = vty;
3286 wctx.flags = SHOW_REMOTE_MAC_FROM_VTEP;
3287 wctx.r_vtep_ip = vtep_ip;
3288 wctx.json = json;
3289 hash_iterate(zvrf->evpn_table, zevpn_print_mac_hash_all_evpn, &wctx);
3290
3291 if (use_json)
3292 vty_json(vty, json);
3293 }
3294
3295 /*
3296 * Display specific MAC for a VNI, if present (VTY command handler).
3297 */
3298 void zebra_vxlan_print_specific_mac_vni(struct vty *vty, struct zebra_vrf *zvrf,
3299 vni_t vni, struct ethaddr *macaddr,
3300 bool use_json)
3301 {
3302 struct zebra_evpn *zevpn;
3303 struct zebra_mac *mac;
3304 json_object *json = NULL;
3305
3306 if (!is_evpn_enabled())
3307 return;
3308
3309 zevpn = zebra_evpn_lookup(vni);
3310 if (!zevpn) {
3311 if (use_json)
3312 vty_out(vty, "{}\n");
3313 else
3314 vty_out(vty, "%% VNI %u does not exist\n", vni);
3315 return;
3316 }
3317 mac = zebra_evpn_mac_lookup(zevpn, macaddr);
3318 if (!mac) {
3319 if (use_json)
3320 vty_out(vty, "{}\n");
3321 else
3322 vty_out(vty,
3323 "%% Requested MAC does not exist in VNI %u\n",
3324 vni);
3325 return;
3326 }
3327
3328 if (use_json)
3329 json = json_object_new_object();
3330
3331 zebra_evpn_print_mac(mac, vty, json);
3332 if (use_json)
3333 vty_json(vty, json);
3334 }
3335
3336 /* Print Duplicate MACs per VNI */
3337 void zebra_vxlan_print_macs_vni_dad(struct vty *vty,
3338 struct zebra_vrf *zvrf,
3339 vni_t vni, bool use_json)
3340 {
3341 struct zebra_evpn *zevpn;
3342 struct mac_walk_ctx wctx;
3343 uint32_t num_macs;
3344 json_object *json = NULL;
3345 json_object *json_mac = NULL;
3346
3347 if (!is_evpn_enabled())
3348 return;
3349
3350 zevpn = zebra_evpn_lookup(vni);
3351 if (!zevpn) {
3352 vty_out(vty, "%% VNI %u does not exist\n", vni);
3353 return;
3354 }
3355
3356 num_macs = num_valid_macs(zevpn);
3357 if (!num_macs)
3358 return;
3359
3360 num_macs = num_dup_detected_macs(zevpn);
3361 if (!num_macs)
3362 return;
3363
3364 if (use_json) {
3365 json = json_object_new_object();
3366 json_mac = json_object_new_object();
3367 }
3368
3369 memset(&wctx, 0, sizeof(wctx));
3370 wctx.zevpn = zevpn;
3371 wctx.vty = vty;
3372 wctx.json = json_mac;
3373
3374 if (!use_json) {
3375 vty_out(vty,
3376 "Number of MACs (local and remote) known for this VNI: %u\n",
3377 num_macs);
3378 vty_out(vty, "%-17s %-6s %-5s %-30s %-5s\n", "MAC", "Type",
3379 "Flags", "Intf/Remote ES/VTEP", "VLAN");
3380 } else
3381 json_object_int_add(json, "numMacs", num_macs);
3382
3383 hash_iterate(zevpn->mac_table, zebra_evpn_print_dad_mac_hash, &wctx);
3384
3385 if (use_json) {
3386 json_object_object_add(json, "macs", json_mac);
3387 vty_json(vty, json);
3388 }
3389
3390 }
3391
3392 int zebra_vxlan_clear_dup_detect_vni_mac(struct zebra_vrf *zvrf, vni_t vni,
3393 struct ethaddr *macaddr, char *errmsg,
3394 size_t errmsg_len)
3395 {
3396 struct zebra_evpn *zevpn;
3397 struct zebra_mac *mac;
3398 struct listnode *node = NULL;
3399 struct zebra_neigh *nbr = NULL;
3400
3401 if (!is_evpn_enabled())
3402 return 0;
3403
3404 zevpn = zebra_evpn_lookup(vni);
3405 if (!zevpn) {
3406 snprintfrr(errmsg, errmsg_len, "VNI %u does not exist", vni);
3407 return -1;
3408 }
3409
3410 mac = zebra_evpn_mac_lookup(zevpn, macaddr);
3411 if (!mac) {
3412 snprintf(errmsg, errmsg_len,
3413 "Requested MAC does not exist in VNI %u\n", vni);
3414 return -1;
3415 }
3416
3417 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE)) {
3418 snprintfrr(errmsg, errmsg_len,
3419 "Requested MAC is not duplicate detected\n");
3420 return -1;
3421 }
3422
3423 /* Remove all IPs as duplicate associcated with this MAC */
3424 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, nbr)) {
3425 /* For local neigh mark inactive so MACIP update is generated
3426 * to BGP. This is a scenario where MAC update received
3427 * and detected as duplicate which marked neigh as duplicate.
3428 * Later local neigh update did not get a chance to relay
3429 * to BGP. Similarly remote macip update, neigh needs to be
3430 * installed locally.
3431 */
3432 if (zvrf->dad_freeze &&
3433 CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) {
3434 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL))
3435 ZEBRA_NEIGH_SET_INACTIVE(nbr);
3436 else if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE))
3437 zebra_evpn_rem_neigh_install(
3438 zevpn, nbr, false /*was_static*/);
3439 }
3440
3441 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
3442 nbr->dad_count = 0;
3443 nbr->detect_start_time.tv_sec = 0;
3444 nbr->dad_dup_detect_time = 0;
3445 }
3446
3447 UNSET_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE);
3448 mac->dad_count = 0;
3449 mac->detect_start_time.tv_sec = 0;
3450 mac->detect_start_time.tv_usec = 0;
3451 mac->dad_dup_detect_time = 0;
3452 THREAD_OFF(mac->dad_mac_auto_recovery_timer);
3453
3454 /* warn-only action return */
3455 if (!zvrf->dad_freeze)
3456 return 0;
3457
3458 /* Local: Notify Peer VTEPs, Remote: Install the entry */
3459 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
3460 /* Inform to BGP */
3461 if (zebra_evpn_mac_send_add_to_client(zevpn->vni, &mac->macaddr,
3462 mac->flags, mac->loc_seq,
3463 mac->es))
3464 return 0;
3465
3466 /* Process all neighbors associated with this MAC. */
3467 zebra_evpn_process_neigh_on_local_mac_change(zevpn, mac, 0,
3468 0 /*es_change*/);
3469
3470 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
3471 zebra_evpn_process_neigh_on_remote_mac_add(zevpn, mac);
3472
3473 /* Install the entry. */
3474 zebra_evpn_rem_mac_install(zevpn, mac, false /* was_static */);
3475 }
3476
3477 return 0;
3478 }
3479
3480 int zebra_vxlan_clear_dup_detect_vni_ip(struct zebra_vrf *zvrf, vni_t vni,
3481 struct ipaddr *ip, char *errmsg,
3482 size_t errmsg_len)
3483 {
3484 struct zebra_evpn *zevpn;
3485 struct zebra_neigh *nbr;
3486 struct zebra_mac *mac;
3487 char buf[INET6_ADDRSTRLEN];
3488 char buf2[ETHER_ADDR_STRLEN];
3489
3490 if (!is_evpn_enabled())
3491 return 0;
3492
3493 zevpn = zebra_evpn_lookup(vni);
3494 if (!zevpn) {
3495 snprintfrr(errmsg, errmsg_len, "VNI %u does not exist\n", vni);
3496 return -1;
3497 }
3498
3499 nbr = zebra_evpn_neigh_lookup(zevpn, ip);
3500 if (!nbr) {
3501 snprintfrr(errmsg, errmsg_len,
3502 "Requested host IP does not exist in VNI %u\n", vni);
3503 return -1;
3504 }
3505
3506 ipaddr2str(&nbr->ip, buf, sizeof(buf));
3507
3508 if (!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) {
3509 snprintfrr(errmsg, errmsg_len,
3510 "Requested host IP %s is not duplicate detected\n",
3511 buf);
3512 return -1;
3513 }
3514
3515 mac = zebra_evpn_mac_lookup(zevpn, &nbr->emac);
3516
3517 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE)) {
3518 snprintfrr(
3519 errmsg, errmsg_len,
3520 "Requested IP's associated MAC %s is still in duplicate state\n",
3521 prefix_mac2str(&nbr->emac, buf2, sizeof(buf2)));
3522 return -1;
3523 }
3524
3525 if (IS_ZEBRA_DEBUG_VXLAN)
3526 zlog_debug("%s: clear neigh %s in dup state, flags 0x%x seq %u",
3527 __func__, buf, nbr->flags, nbr->loc_seq);
3528
3529 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
3530 nbr->dad_count = 0;
3531 nbr->detect_start_time.tv_sec = 0;
3532 nbr->detect_start_time.tv_usec = 0;
3533 nbr->dad_dup_detect_time = 0;
3534 THREAD_OFF(nbr->dad_ip_auto_recovery_timer);
3535
3536 if (!!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) {
3537 zebra_evpn_neigh_send_add_to_client(zevpn->vni, ip, &nbr->emac,
3538 nbr->mac, nbr->flags,
3539 nbr->loc_seq);
3540 } else if (!!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) {
3541 zebra_evpn_rem_neigh_install(zevpn, nbr, false /*was_static*/);
3542 }
3543
3544 return 0;
3545 }
3546
3547 static void zevpn_clear_dup_mac_hash(struct hash_bucket *bucket, void *ctxt)
3548 {
3549 struct mac_walk_ctx *wctx = ctxt;
3550 struct zebra_mac *mac;
3551 struct zebra_evpn *zevpn;
3552 struct listnode *node = NULL;
3553 struct zebra_neigh *nbr = NULL;
3554
3555 mac = (struct zebra_mac *)bucket->data;
3556 if (!mac)
3557 return;
3558
3559 zevpn = wctx->zevpn;
3560
3561 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE))
3562 return;
3563
3564 UNSET_FLAG(mac->flags, ZEBRA_MAC_DUPLICATE);
3565 mac->dad_count = 0;
3566 mac->detect_start_time.tv_sec = 0;
3567 mac->detect_start_time.tv_usec = 0;
3568 mac->dad_dup_detect_time = 0;
3569 THREAD_OFF(mac->dad_mac_auto_recovery_timer);
3570
3571 /* Remove all IPs as duplicate associcated with this MAC */
3572 for (ALL_LIST_ELEMENTS_RO(mac->neigh_list, node, nbr)) {
3573 if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)
3574 && nbr->dad_count)
3575 ZEBRA_NEIGH_SET_INACTIVE(nbr);
3576
3577 UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE);
3578 nbr->dad_count = 0;
3579 nbr->detect_start_time.tv_sec = 0;
3580 nbr->dad_dup_detect_time = 0;
3581 }
3582
3583 /* Local: Notify Peer VTEPs, Remote: Install the entry */
3584 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL)) {
3585 /* Inform to BGP */
3586 if (zebra_evpn_mac_send_add_to_client(zevpn->vni, &mac->macaddr,
3587 mac->flags, mac->loc_seq,
3588 mac->es))
3589 return;
3590
3591 /* Process all neighbors associated with this MAC. */
3592 zebra_evpn_process_neigh_on_local_mac_change(zevpn, mac, 0,
3593 0 /*es_change*/);
3594
3595 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
3596 zebra_evpn_process_neigh_on_remote_mac_add(zevpn, mac);
3597
3598 /* Install the entry. */
3599 zebra_evpn_rem_mac_install(zevpn, mac, false /* was_static */);
3600 }
3601 }
3602
3603 static void zevpn_clear_dup_detect_hash_vni_all(struct hash_bucket *bucket,
3604 void **args)
3605 {
3606 struct zebra_evpn *zevpn;
3607 struct zebra_vrf *zvrf;
3608 struct mac_walk_ctx m_wctx;
3609 struct neigh_walk_ctx n_wctx;
3610
3611 zevpn = (struct zebra_evpn *)bucket->data;
3612 if (!zevpn)
3613 return;
3614
3615 zvrf = (struct zebra_vrf *)args[0];
3616
3617 if (hashcount(zevpn->neigh_table)) {
3618 memset(&n_wctx, 0, sizeof(n_wctx));
3619 n_wctx.zevpn = zevpn;
3620 n_wctx.zvrf = zvrf;
3621 hash_iterate(zevpn->neigh_table,
3622 zebra_evpn_clear_dup_neigh_hash, &n_wctx);
3623 }
3624
3625 if (num_valid_macs(zevpn)) {
3626 memset(&m_wctx, 0, sizeof(m_wctx));
3627 m_wctx.zevpn = zevpn;
3628 m_wctx.zvrf = zvrf;
3629 hash_iterate(zevpn->mac_table, zevpn_clear_dup_mac_hash, &m_wctx);
3630 }
3631
3632 }
3633
3634 int zebra_vxlan_clear_dup_detect_vni_all(struct zebra_vrf *zvrf)
3635 {
3636 void *args[1];
3637
3638 if (!is_evpn_enabled())
3639 return 0;
3640
3641 args[0] = zvrf;
3642
3643 hash_iterate(zvrf->evpn_table,
3644 (void (*)(struct hash_bucket *, void *))
3645 zevpn_clear_dup_detect_hash_vni_all, args);
3646
3647 return 0;
3648 }
3649
3650 int zebra_vxlan_clear_dup_detect_vni(struct zebra_vrf *zvrf, vni_t vni)
3651 {
3652 struct zebra_evpn *zevpn;
3653 struct mac_walk_ctx m_wctx;
3654 struct neigh_walk_ctx n_wctx;
3655
3656 if (!is_evpn_enabled())
3657 return 0;
3658
3659 zevpn = zebra_evpn_lookup(vni);
3660 if (!zevpn) {
3661 zlog_warn("VNI %u does not exist", vni);
3662 return CMD_WARNING;
3663 }
3664
3665 if (hashcount(zevpn->neigh_table)) {
3666 memset(&n_wctx, 0, sizeof(n_wctx));
3667 n_wctx.zevpn = zevpn;
3668 n_wctx.zvrf = zvrf;
3669 hash_iterate(zevpn->neigh_table,
3670 zebra_evpn_clear_dup_neigh_hash, &n_wctx);
3671 }
3672
3673 if (num_valid_macs(zevpn)) {
3674 memset(&m_wctx, 0, sizeof(m_wctx));
3675 m_wctx.zevpn = zevpn;
3676 m_wctx.zvrf = zvrf;
3677 hash_iterate(zevpn->mac_table, zevpn_clear_dup_mac_hash, &m_wctx);
3678 }
3679
3680 return 0;
3681 }
3682
3683 /*
3684 * Display MACs for a VNI from specific VTEP (VTY command handler).
3685 */
3686 void zebra_vxlan_print_macs_vni_vtep(struct vty *vty, struct zebra_vrf *zvrf,
3687 vni_t vni, struct in_addr vtep_ip,
3688 bool use_json)
3689 {
3690 struct zebra_evpn *zevpn;
3691 uint32_t num_macs;
3692 struct mac_walk_ctx wctx;
3693 json_object *json = NULL;
3694 json_object *json_mac = NULL;
3695
3696 if (!is_evpn_enabled())
3697 return;
3698 zevpn = zebra_evpn_lookup(vni);
3699 if (!zevpn) {
3700 if (use_json)
3701 vty_out(vty, "{}\n");
3702 else
3703 vty_out(vty, "%% VNI %u does not exist\n", vni);
3704 return;
3705 }
3706 num_macs = num_valid_macs(zevpn);
3707 if (!num_macs)
3708 return;
3709
3710 if (use_json) {
3711 json = json_object_new_object();
3712 json_mac = json_object_new_object();
3713 }
3714
3715 memset(&wctx, 0, sizeof(wctx));
3716 wctx.zevpn = zevpn;
3717 wctx.vty = vty;
3718 wctx.flags = SHOW_REMOTE_MAC_FROM_VTEP;
3719 wctx.r_vtep_ip = vtep_ip;
3720 wctx.json = json_mac;
3721 hash_iterate(zevpn->mac_table, zebra_evpn_print_mac_hash, &wctx);
3722
3723 if (use_json) {
3724 json_object_int_add(json, "numMacs", wctx.count);
3725 if (wctx.count)
3726 json_object_object_add(json, "macs", json_mac);
3727 vty_json(vty, json);
3728 }
3729 }
3730
3731
3732 /*
3733 * Display VNI information (VTY command handler).
3734 *
3735 * use_json flag indicates that output should be in JSON format.
3736 * json_array is non NULL when JSON output needs to be aggregated (by the
3737 * caller) and then printed, otherwise, JSON evpn vni info is printed
3738 * right away.
3739 */
3740 void zebra_vxlan_print_vni(struct vty *vty, struct zebra_vrf *zvrf, vni_t vni,
3741 bool use_json, json_object *json_array)
3742 {
3743 json_object *json = NULL;
3744 void *args[2];
3745 struct zebra_l3vni *zl3vni = NULL;
3746 struct zebra_evpn *zevpn = NULL;
3747
3748 if (!is_evpn_enabled())
3749 return;
3750
3751 if (use_json)
3752 json = json_object_new_object();
3753
3754 args[0] = vty;
3755 args[1] = json;
3756
3757 zl3vni = zl3vni_lookup(vni);
3758 if (zl3vni) {
3759 zl3vni_print(zl3vni, (void *)args);
3760 } else {
3761 zevpn = zebra_evpn_lookup(vni);
3762 if (zevpn)
3763 zebra_evpn_print(zevpn, (void *)args);
3764 else if (!json)
3765 vty_out(vty, "%% VNI %u does not exist\n", vni);
3766 }
3767
3768 if (use_json) {
3769 /*
3770 * Each "json" object contains info about 1 VNI.
3771 * When "json_array" is non-null, we aggreggate the json output
3772 * into json_array and print it as a JSON array.
3773 */
3774 if (json_array)
3775 json_object_array_add(json_array, json);
3776 else
3777 vty_json(vty, json);
3778 }
3779 }
3780
3781 /* Display all global details for EVPN */
3782 void zebra_vxlan_print_evpn(struct vty *vty, bool uj)
3783 {
3784 int num_l2vnis = 0;
3785 int num_l3vnis = 0;
3786 int num_vnis = 0;
3787 json_object *json = NULL;
3788 struct zebra_vrf *zvrf = NULL;
3789
3790 if (!is_evpn_enabled())
3791 return;
3792
3793 zvrf = zebra_vrf_get_evpn();
3794
3795 num_l3vnis = hashcount(zrouter.l3vni_table);
3796 num_l2vnis = hashcount(zvrf->evpn_table);
3797 num_vnis = num_l2vnis + num_l3vnis;
3798
3799 if (uj) {
3800 json = json_object_new_object();
3801 json_object_string_add(json, "advertiseGatewayMacip",
3802 zvrf->advertise_gw_macip ? "Yes" : "No");
3803 json_object_string_add(json, "advertiseSviMacip",
3804 zvrf->advertise_svi_macip ? "Yes"
3805 : "No");
3806 json_object_string_add(json, "advertiseSviMac",
3807 zebra_evpn_mh_do_adv_svi_mac() ? "Yes"
3808 : "No");
3809 json_object_int_add(json, "numVnis", num_vnis);
3810 json_object_int_add(json, "numL2Vnis", num_l2vnis);
3811 json_object_int_add(json, "numL3Vnis", num_l3vnis);
3812 if (zebra_evpn_do_dup_addr_detect(zvrf))
3813 json_object_boolean_true_add(json,
3814 "isDuplicateAddrDetection");
3815 else
3816 json_object_boolean_false_add(json,
3817 "isDuplicateAddrDetection");
3818 json_object_int_add(json, "maxMoves", zvrf->dad_max_moves);
3819 json_object_int_add(json, "detectionTime", zvrf->dad_time);
3820 json_object_int_add(json, "detectionFreezeTime",
3821 zvrf->dad_freeze_time);
3822 zebra_evpn_mh_json(json);
3823 } else {
3824 vty_out(vty, "L2 VNIs: %u\n", num_l2vnis);
3825 vty_out(vty, "L3 VNIs: %u\n", num_l3vnis);
3826 vty_out(vty, "Advertise gateway mac-ip: %s\n",
3827 zvrf->advertise_gw_macip ? "Yes" : "No");
3828 vty_out(vty, "Advertise svi mac-ip: %s\n",
3829 zvrf->advertise_svi_macip ? "Yes" : "No");
3830 vty_out(vty, "Advertise svi mac: %s\n",
3831 zebra_evpn_mh_do_adv_svi_mac() ? "Yes" : "No");
3832 vty_out(vty, "Duplicate address detection: %s\n",
3833 zebra_evpn_do_dup_addr_detect(zvrf) ? "Enable"
3834 : "Disable");
3835 vty_out(vty, " Detection max-moves %u, time %d\n",
3836 zvrf->dad_max_moves, zvrf->dad_time);
3837 if (zvrf->dad_freeze) {
3838 if (zvrf->dad_freeze_time)
3839 vty_out(vty, " Detection freeze %u\n",
3840 zvrf->dad_freeze_time);
3841 else
3842 vty_out(vty, " Detection freeze %s\n",
3843 "permanent");
3844 }
3845 zebra_evpn_mh_print(vty);
3846 }
3847
3848 if (uj)
3849 vty_json(vty, json);
3850 }
3851
3852 /*
3853 * Display VNI hash table (VTY command handler).
3854 */
3855 void zebra_vxlan_print_vnis(struct vty *vty, struct zebra_vrf *zvrf,
3856 bool use_json)
3857 {
3858 json_object *json = NULL;
3859 void *args[2];
3860
3861 if (!is_evpn_enabled())
3862 return;
3863
3864 if (use_json)
3865 json = json_object_new_object();
3866 else
3867 vty_out(vty, "%-10s %-4s %-21s %-8s %-8s %-15s %-37s\n", "VNI",
3868 "Type", "VxLAN IF", "# MACs", "# ARPs",
3869 "# Remote VTEPs", "Tenant VRF");
3870
3871 args[0] = vty;
3872 args[1] = json;
3873
3874 /* Display all L2-VNIs */
3875 hash_iterate(
3876 zvrf->evpn_table,
3877 (void (*)(struct hash_bucket *, void *))zebra_evpn_print_hash,
3878 args);
3879
3880 /* Display all L3-VNIs */
3881 hash_iterate(zrouter.l3vni_table,
3882 (void (*)(struct hash_bucket *, void *))zl3vni_print_hash,
3883 args);
3884
3885 if (use_json)
3886 vty_json(vty, json);
3887 }
3888
3889 void zebra_vxlan_dup_addr_detection(ZAPI_HANDLER_ARGS)
3890 {
3891 struct stream *s;
3892 int time = 0;
3893 uint32_t max_moves = 0;
3894 uint32_t freeze_time = 0;
3895 bool dup_addr_detect = false;
3896 bool freeze = false;
3897 bool old_addr_detect;
3898
3899 s = msg;
3900 STREAM_GETL(s, dup_addr_detect);
3901 STREAM_GETL(s, time);
3902 STREAM_GETL(s, max_moves);
3903 STREAM_GETL(s, freeze);
3904 STREAM_GETL(s, freeze_time);
3905
3906 old_addr_detect = zebra_evpn_do_dup_addr_detect(zvrf);
3907 zvrf->dup_addr_detect = dup_addr_detect;
3908 dup_addr_detect = zebra_evpn_do_dup_addr_detect(zvrf);
3909
3910 /* DAD previous state was enabled, and new state is disable,
3911 * clear all duplicate detected addresses.
3912 */
3913 if (old_addr_detect && !dup_addr_detect)
3914 zebra_vxlan_clear_dup_detect_vni_all(zvrf);
3915
3916 zvrf->dad_time = time;
3917 zvrf->dad_max_moves = max_moves;
3918 zvrf->dad_freeze = freeze;
3919 zvrf->dad_freeze_time = freeze_time;
3920
3921 if (IS_ZEBRA_DEBUG_VXLAN)
3922 zlog_debug(
3923 "VRF %s duplicate detect %s max_moves %u timeout %u freeze %s freeze_time %u",
3924 vrf_id_to_name(zvrf->vrf->vrf_id),
3925 dup_addr_detect ? "enable" : "disable",
3926 zvrf->dad_max_moves, zvrf->dad_time,
3927 zvrf->dad_freeze ? "enable" : "disable",
3928 zvrf->dad_freeze_time);
3929
3930 stream_failure:
3931 return;
3932 }
3933
3934 /*
3935 * Display VNI hash table in detail(VTY command handler).
3936 */
3937 void zebra_vxlan_print_vnis_detail(struct vty *vty, struct zebra_vrf *zvrf,
3938 bool use_json)
3939 {
3940 json_object *json_array = NULL;
3941 struct zebra_ns *zns = NULL;
3942 struct zebra_evpn_show zes;
3943
3944 if (!is_evpn_enabled())
3945 return;
3946
3947 zns = zebra_ns_lookup(NS_DEFAULT);
3948 if (!zns)
3949 return;
3950
3951 if (use_json)
3952 json_array = json_object_new_array();
3953
3954 zes.vty = vty;
3955 zes.json = json_array;
3956 zes.zvrf = zvrf;
3957 zes.use_json = use_json;
3958
3959 /* Display all L2-VNIs */
3960 hash_iterate(zvrf->evpn_table,
3961 (void (*)(struct hash_bucket *,
3962 void *))zebra_evpn_print_hash_detail,
3963 &zes);
3964
3965 /* Display all L3-VNIs */
3966 hash_iterate(zrouter.l3vni_table,
3967 (void (*)(struct hash_bucket *,
3968 void *))zl3vni_print_hash_detail,
3969 &zes);
3970
3971 if (use_json)
3972 vty_json(vty, json_array);
3973 }
3974
3975 /*
3976 * Handle neighbor delete notification from the kernel (on a VLAN device
3977 * / L3 interface). This may result in either the neighbor getting deleted
3978 * from our database or being re-added to the kernel (if it is a valid
3979 * remote neighbor).
3980 */
3981 int zebra_vxlan_handle_kernel_neigh_del(struct interface *ifp,
3982 struct interface *link_if,
3983 struct ipaddr *ip)
3984 {
3985 struct zebra_evpn *zevpn = NULL;
3986 struct zebra_l3vni *zl3vni = NULL;
3987
3988 /* check if this is a remote neigh entry corresponding to remote
3989 * next-hop
3990 */
3991 zl3vni = zl3vni_from_svi(ifp, link_if);
3992 if (zl3vni)
3993 return zl3vni_local_nh_del(zl3vni, ip);
3994
3995 /* We are only interested in neighbors on an SVI that resides on top
3996 * of a VxLAN bridge.
3997 */
3998 zevpn = zebra_evpn_from_svi(ifp, link_if);
3999 if (!zevpn) {
4000 if (IS_ZEBRA_DEBUG_VXLAN)
4001 zlog_debug(
4002 "%s: Del neighbor %pIA EVPN is not present for interface %s",
4003 __func__, ip, ifp->name);
4004 return 0;
4005 }
4006
4007 if (!zevpn->vxlan_if) {
4008 zlog_debug(
4009 "VNI %u hash %p doesn't have intf upon local neighbor DEL",
4010 zevpn->vni, zevpn);
4011 return -1;
4012 }
4013
4014 if (IS_ZEBRA_DEBUG_VXLAN)
4015 zlog_debug("Del neighbor %pIA intf %s(%u) -> L2-VNI %u",
4016 ip, ifp->name, ifp->ifindex, zevpn->vni);
4017
4018 return zebra_evpn_neigh_del_ip(zevpn, ip);
4019 }
4020
4021 /*
4022 * Handle neighbor add or update notification from the kernel (on a VLAN
4023 * device / L3 interface). This is typically for a local neighbor but can
4024 * also be for a remote neighbor (e.g., ageout notification). It could
4025 * also be a "move" scenario.
4026 */
4027 int zebra_vxlan_handle_kernel_neigh_update(struct interface *ifp,
4028 struct interface *link_if,
4029 struct ipaddr *ip,
4030 struct ethaddr *macaddr,
4031 uint16_t state,
4032 bool is_ext,
4033 bool is_router,
4034 bool local_inactive, bool dp_static)
4035 {
4036 struct zebra_evpn *zevpn = NULL;
4037 struct zebra_l3vni *zl3vni = NULL;
4038
4039 /* check if this is a remote neigh entry corresponding to remote
4040 * next-hop
4041 */
4042 zl3vni = zl3vni_from_svi(ifp, link_if);
4043 if (zl3vni)
4044 return zl3vni_local_nh_add_update(zl3vni, ip, state);
4045
4046 /* We are only interested in neighbors on an SVI that resides on top
4047 * of a VxLAN bridge.
4048 */
4049 zevpn = zebra_evpn_from_svi(ifp, link_if);
4050 if (!zevpn)
4051 return 0;
4052
4053 if (IS_ZEBRA_DEBUG_VXLAN || IS_ZEBRA_DEBUG_EVPN_MH_NEIGH)
4054 zlog_debug(
4055 "Add/Update neighbor %pIA MAC %pEA intf %s(%u) state 0x%x %s%s%s%s-> L2-VNI %u",
4056 ip, macaddr, ifp->name,
4057 ifp->ifindex, state, is_ext ? "ext-learned " : "",
4058 is_router ? "router " : "",
4059 local_inactive ? "local_inactive " : "",
4060 dp_static ? "peer_sync " : "", zevpn->vni);
4061
4062 /* Is this about a local neighbor or a remote one? */
4063 if (!is_ext)
4064 return zebra_evpn_local_neigh_update(zevpn, ifp, ip, macaddr,
4065 is_router, local_inactive,
4066 dp_static);
4067
4068 return zebra_evpn_remote_neigh_update(zevpn, ifp, ip, macaddr, state);
4069 }
4070
4071 static int32_t
4072 zebra_vxlan_remote_macip_helper(bool add, struct stream *s, vni_t *vni,
4073 struct ethaddr *macaddr, uint16_t *ipa_len,
4074 struct ipaddr *ip, struct in_addr *vtep_ip,
4075 uint8_t *flags, uint32_t *seq, esi_t *esi)
4076 {
4077 uint16_t l = 0;
4078
4079 /*
4080 * Obtain each remote MACIP and process.
4081 * Message contains VNI, followed by MAC followed by IP (if any)
4082 * followed by remote VTEP IP.
4083 */
4084 memset(ip, 0, sizeof(*ip));
4085 STREAM_GETL(s, *vni);
4086 STREAM_GET(macaddr->octet, s, ETH_ALEN);
4087 STREAM_GETW(s, *ipa_len);
4088
4089 if (*ipa_len) {
4090 if (*ipa_len == IPV4_MAX_BYTELEN)
4091 ip->ipa_type = IPADDR_V4;
4092 else if (*ipa_len == IPV6_MAX_BYTELEN)
4093 ip->ipa_type = IPADDR_V6;
4094 else {
4095 if (IS_ZEBRA_DEBUG_VXLAN)
4096 zlog_debug(
4097 "ipa_len *must* be %d or %d bytes in length not %d",
4098 IPV4_MAX_BYTELEN, IPV6_MAX_BYTELEN,
4099 *ipa_len);
4100 goto stream_failure;
4101 }
4102
4103 STREAM_GET(&ip->ip.addr, s, *ipa_len);
4104 }
4105 l += 4 + ETH_ALEN + 4 + *ipa_len;
4106 STREAM_GET(&vtep_ip->s_addr, s, IPV4_MAX_BYTELEN);
4107 l += IPV4_MAX_BYTELEN;
4108
4109 if (add) {
4110 STREAM_GETC(s, *flags);
4111 STREAM_GETL(s, *seq);
4112 l += 5;
4113 STREAM_GET(esi, s, sizeof(esi_t));
4114 l += sizeof(esi_t);
4115 }
4116
4117 return l;
4118
4119 stream_failure:
4120 return -1;
4121 }
4122
4123 /*
4124 * Handle message from client to delete a remote MACIP for a VNI.
4125 */
4126 void zebra_vxlan_remote_macip_del(ZAPI_HANDLER_ARGS)
4127 {
4128 struct stream *s;
4129 vni_t vni;
4130 struct ethaddr macaddr;
4131 struct ipaddr ip;
4132 struct in_addr vtep_ip;
4133 uint16_t l = 0, ipa_len;
4134 char buf1[INET6_ADDRSTRLEN];
4135
4136 s = msg;
4137
4138 while (l < hdr->length) {
4139 int res_length = zebra_vxlan_remote_macip_helper(
4140 false, s, &vni, &macaddr, &ipa_len, &ip, &vtep_ip, NULL,
4141 NULL, NULL);
4142
4143 if (res_length == -1)
4144 goto stream_failure;
4145
4146 l += res_length;
4147 if (IS_ZEBRA_DEBUG_VXLAN)
4148 zlog_debug(
4149 "Recv MACIP DEL VNI %u MAC %pEA%s%s Remote VTEP %pI4 from %s",
4150 vni, &macaddr,
4151 ipa_len ? " IP " : "",
4152 ipa_len ?
4153 ipaddr2str(&ip, buf1, sizeof(buf1)) : "",
4154 &vtep_ip, zebra_route_string(client->proto));
4155
4156 /* Enqueue to workqueue for processing */
4157 zebra_rib_queue_evpn_rem_macip_del(vni, &macaddr, &ip, vtep_ip);
4158 }
4159
4160 stream_failure:
4161 return;
4162 }
4163
4164 /*
4165 * Handle message from client to add a remote MACIP for a VNI. This
4166 * could be just the add of a MAC address or the add of a neighbor
4167 * (IP+MAC).
4168 */
4169 void zebra_vxlan_remote_macip_add(ZAPI_HANDLER_ARGS)
4170 {
4171 struct stream *s;
4172 vni_t vni;
4173 struct ethaddr macaddr;
4174 struct ipaddr ip;
4175 struct in_addr vtep_ip;
4176 uint16_t l = 0, ipa_len;
4177 uint8_t flags = 0;
4178 uint32_t seq;
4179 char buf1[INET6_ADDRSTRLEN];
4180 esi_t esi;
4181 char esi_buf[ESI_STR_LEN];
4182
4183 if (!EVPN_ENABLED(zvrf)) {
4184 zlog_debug("EVPN not enabled, ignoring remote MACIP ADD");
4185 return;
4186 }
4187
4188 s = msg;
4189
4190 while (l < hdr->length) {
4191
4192 int res_length = zebra_vxlan_remote_macip_helper(
4193 true, s, &vni, &macaddr, &ipa_len, &ip, &vtep_ip,
4194 &flags, &seq, &esi);
4195
4196 if (res_length == -1)
4197 goto stream_failure;
4198
4199 l += res_length;
4200 if (IS_ZEBRA_DEBUG_VXLAN) {
4201 if (memcmp(&esi, zero_esi, sizeof(esi_t)))
4202 esi_to_str(&esi, esi_buf, sizeof(esi_buf));
4203 else
4204 strlcpy(esi_buf, "-", ESI_STR_LEN);
4205 zlog_debug(
4206 "Recv %sMACIP ADD VNI %u MAC %pEA%s%s flags 0x%x seq %u VTEP %pI4 ESI %s from %s",
4207 (flags & ZEBRA_MACIP_TYPE_SYNC_PATH) ?
4208 "sync-" : "",
4209 vni, &macaddr,
4210 ipa_len ? " IP " : "",
4211 ipa_len ?
4212 ipaddr2str(&ip, buf1, sizeof(buf1)) : "",
4213 flags, seq, &vtep_ip, esi_buf,
4214 zebra_route_string(client->proto));
4215 }
4216
4217 /* Enqueue to workqueue for processing */
4218 zebra_rib_queue_evpn_rem_macip_add(vni, &macaddr, &ip, flags,
4219 seq, vtep_ip, &esi);
4220 }
4221
4222 stream_failure:
4223 return;
4224 }
4225
4226 /*
4227 * Handle remote vtep delete by kernel; re-add the vtep if we have it
4228 */
4229 int zebra_vxlan_check_readd_vtep(struct interface *ifp, vni_t vni,
4230 struct in_addr vtep_ip)
4231 {
4232 struct zebra_if *zif;
4233 struct zebra_vrf *zvrf = NULL;
4234 struct zebra_evpn *zevpn = NULL;
4235 struct zebra_vtep *zvtep = NULL;
4236 struct zebra_vxlan_vni *vnip;
4237
4238 zif = ifp->info;
4239 assert(zif);
4240
4241 /* If EVPN is not enabled, nothing to do. */
4242 if (!is_evpn_enabled())
4243 return 0;
4244
4245 /* Locate VRF corresponding to interface. */
4246 zvrf = ifp->vrf->info;
4247 if (!zvrf)
4248 return -1;
4249
4250 vnip = zebra_vxlan_if_vni_find(zif, vni);
4251 if (!vnip)
4252 return 0;
4253
4254 /* Locate hash entry; it is expected to exist. */
4255 zevpn = zebra_evpn_lookup(vni);
4256 if (!zevpn)
4257 return 0;
4258
4259 /* If the remote vtep entry doesn't exists nothing to do */
4260 zvtep = zebra_evpn_vtep_find(zevpn, &vtep_ip);
4261 if (!zvtep)
4262 return 0;
4263
4264 if (IS_ZEBRA_DEBUG_VXLAN)
4265 zlog_debug(
4266 "Del MAC for remote VTEP %pI4 intf %s(%u) VNI %u - readd",
4267 &vtep_ip, ifp->name, ifp->ifindex, vni);
4268
4269 zebra_evpn_vtep_install(zevpn, zvtep);
4270 return 0;
4271 }
4272
4273 /*
4274 * Handle notification of MAC add/update over VxLAN. If the kernel is notifying
4275 * us, this must involve a multihoming scenario. Treat this as implicit delete
4276 * of any prior local MAC.
4277 */
4278 static int zebra_vxlan_check_del_local_mac(struct interface *ifp,
4279 struct interface *br_if,
4280 struct ethaddr *macaddr,
4281 vlanid_t vid, vni_t vni)
4282 {
4283 struct zebra_if *zif;
4284 struct zebra_evpn *zevpn;
4285 struct zebra_mac *mac;
4286
4287 zif = ifp->info;
4288 assert(zif);
4289
4290 /* Check if EVPN is enabled. */
4291 if (!is_evpn_enabled())
4292 return 0;
4293
4294 /* Locate hash entry; it is expected to exist. */
4295 zevpn = zebra_evpn_lookup(vni);
4296 if (!zevpn)
4297 return 0;
4298
4299 /* If entry doesn't exist, nothing to do. */
4300 mac = zebra_evpn_mac_lookup(zevpn, macaddr);
4301 if (!mac)
4302 return 0;
4303
4304 /* Is it a local entry? */
4305 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
4306 return 0;
4307
4308 if (IS_ZEBRA_DEBUG_VXLAN)
4309 zlog_debug(
4310 "Add/update remote MAC %pEA intf %s(%u) VNI %u flags 0x%x - del local",
4311 macaddr, ifp->name, ifp->ifindex, vni, mac->flags);
4312
4313 /* Remove MAC from BGP. */
4314 zebra_evpn_mac_send_del_to_client(zevpn->vni, macaddr, mac->flags,
4315 false /* force */);
4316
4317 /*
4318 * If there are no neigh associated with the mac delete the mac
4319 * else mark it as AUTO for forward reference
4320 */
4321 if (!listcount(mac->neigh_list)) {
4322 zebra_evpn_mac_del(zevpn, mac);
4323 } else {
4324 zebra_evpn_mac_clear_fwd_info(mac);
4325 UNSET_FLAG(mac->flags, ZEBRA_MAC_ALL_LOCAL_FLAGS);
4326 UNSET_FLAG(mac->flags, ZEBRA_MAC_STICKY);
4327 SET_FLAG(mac->flags, ZEBRA_MAC_AUTO);
4328 }
4329
4330 return 0;
4331 }
4332
4333 /* MAC notification from the dataplane with a network dest port -
4334 * 1. This can be a local MAC on a down ES (if fast-failover is not possible
4335 * 2. Or it can be a remote MAC
4336 */
4337 int zebra_vxlan_dp_network_mac_add(struct interface *ifp,
4338 struct interface *br_if,
4339 struct ethaddr *macaddr, vlanid_t vid,
4340 vni_t vni, uint32_t nhg_id, bool sticky,
4341 bool dp_static)
4342 {
4343 struct zebra_evpn_es *es;
4344 struct interface *acc_ifp;
4345
4346 /* If netlink message is with vid, it will have no nexthop.
4347 * So skip it.
4348 */
4349 if (vid) {
4350 if (IS_ZEBRA_DEBUG_VXLAN || IS_ZEBRA_DEBUG_EVPN_MH_MAC)
4351 zlog_debug("dpAdd MAC %pEA VID %u - ignore as no nhid",
4352 macaddr, vid);
4353 return 0;
4354 }
4355
4356 /* Get vxlan's vid for netlink message has no it. */
4357 vid = ((struct zebra_if *)ifp->info)
4358 ->l2info.vxl.vni_info.vni.access_vlan;
4359
4360 /* if remote mac delete the local entry */
4361 if (!nhg_id || !zebra_evpn_nhg_is_local_es(nhg_id, &es)
4362 || !zebra_evpn_es_local_mac_via_network_port(es)) {
4363 if (IS_ZEBRA_DEBUG_VXLAN || IS_ZEBRA_DEBUG_EVPN_MH_MAC)
4364 zlog_debug("dpAdd remote MAC %pEA VID %u", macaddr,
4365 vid);
4366 return zebra_vxlan_check_del_local_mac(ifp, br_if, macaddr, vid,
4367 vni);
4368 }
4369
4370 /* If local MAC on a down local ES translate the network-mac-add
4371 * to a local-active-mac-add
4372 */
4373 if (IS_ZEBRA_DEBUG_VXLAN || IS_ZEBRA_DEBUG_EVPN_MH_MAC)
4374 zlog_debug("dpAdd local-nw-MAC %pEA VID %u", macaddr, vid);
4375 acc_ifp = es->zif->ifp;
4376 return zebra_vxlan_local_mac_add_update(
4377 acc_ifp, br_if, macaddr, vid, sticky,
4378 false /* local_inactive */, dp_static);
4379 }
4380
4381 /*
4382 * Handle network MAC delete by kernel -
4383 * 1. readd the remote MAC if we have it
4384 * 2. local MAC with does ES may also need to be re-installed
4385 */
4386 int zebra_vxlan_dp_network_mac_del(struct interface *ifp,
4387 struct interface *br_if,
4388 struct ethaddr *macaddr, vlanid_t vid,
4389 vni_t vni)
4390 {
4391 struct zebra_if *zif = NULL;
4392 struct zebra_evpn *zevpn = NULL;
4393 struct zebra_l3vni *zl3vni = NULL;
4394 struct zebra_mac *mac = NULL;
4395
4396 zif = ifp->info;
4397 assert(zif);
4398
4399 /* Check if EVPN is enabled. */
4400 if (!is_evpn_enabled())
4401 return 0;
4402
4403 /* check if this is a remote RMAC and readd simillar to remote macs */
4404 zl3vni = zl3vni_lookup(vni);
4405 if (zl3vni)
4406 return zebra_vxlan_readd_remote_rmac(zl3vni, macaddr);
4407
4408 /* Locate hash entry; it is expected to exist. */
4409 zevpn = zebra_evpn_lookup(vni);
4410 if (!zevpn)
4411 return 0;
4412
4413 /* If entry doesn't exist, nothing to do. */
4414 mac = zebra_evpn_mac_lookup(zevpn, macaddr);
4415 if (!mac)
4416 return 0;
4417
4418 if (CHECK_FLAG(mac->flags, ZEBRA_MAC_REMOTE)) {
4419 /* If remote entry simply re-install */
4420 if (IS_ZEBRA_DEBUG_VXLAN || IS_ZEBRA_DEBUG_EVPN_MH_MAC)
4421 zlog_debug(
4422 "dpDel remote MAC %pEA intf %s(%u) VNI %u - readd",
4423 macaddr, ifp->name, ifp->ifindex, vni);
4424 zebra_evpn_rem_mac_install(zevpn, mac, false /* was_static */);
4425 } else if (CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL) && mac->es
4426 && zebra_evpn_es_local_mac_via_network_port(mac->es)) {
4427 /* If local entry via nw-port call local-del which will
4428 * re-install entry in the dataplane is needed
4429 */
4430 if (IS_ZEBRA_DEBUG_VXLAN || IS_ZEBRA_DEBUG_EVPN_MH_MAC)
4431 zlog_debug("dpDel local-nw-MAC %pEA VNI %u", macaddr,
4432 vni);
4433
4434 zebra_evpn_del_local_mac(zevpn, mac, false);
4435 }
4436
4437 return 0;
4438 }
4439
4440 /*
4441 * Handle local MAC delete (on a port or VLAN corresponding to this VNI).
4442 */
4443 int zebra_vxlan_local_mac_del(struct interface *ifp, struct interface *br_if,
4444 struct ethaddr *macaddr, vlanid_t vid)
4445 {
4446 struct zebra_evpn *zevpn;
4447 struct zebra_mac *mac;
4448
4449 /* We are interested in MACs only on ports or (port, VLAN) that
4450 * map to a VNI.
4451 */
4452 zevpn = zebra_evpn_map_vlan(ifp, br_if, vid);
4453 if (!zevpn)
4454 return 0;
4455 if (!zevpn->vxlan_if) {
4456 zlog_debug(
4457 "VNI %u hash %p doesn't have intf upon local MAC DEL",
4458 zevpn->vni, zevpn);
4459 return -1;
4460 }
4461
4462 /* If entry doesn't exist, nothing to do. */
4463 mac = zebra_evpn_mac_lookup(zevpn, macaddr);
4464 if (!mac)
4465 return 0;
4466
4467 /* Is it a local entry? */
4468 if (!CHECK_FLAG(mac->flags, ZEBRA_MAC_LOCAL))
4469 return 0;
4470
4471 return zebra_evpn_del_local_mac(zevpn, mac, false);
4472 }
4473
4474 /*
4475 * Handle local MAC add (on a port or VLAN corresponding to this VNI).
4476 */
4477 int zebra_vxlan_local_mac_add_update(struct interface *ifp,
4478 struct interface *br_if,
4479 struct ethaddr *macaddr, vlanid_t vid,
4480 bool sticky, bool local_inactive,
4481 bool dp_static)
4482 {
4483 struct zebra_evpn *zevpn;
4484 struct zebra_vrf *zvrf;
4485
4486 assert(ifp);
4487
4488 /* We are interested in MACs only on ports or (port, VLAN) that
4489 * map to an EVPN.
4490 */
4491 zevpn = zebra_evpn_map_vlan(ifp, br_if, vid);
4492 if (!zevpn) {
4493 if (IS_ZEBRA_DEBUG_VXLAN)
4494 zlog_debug(
4495 " Add/Update %sMAC %pEA intf %s(%u) VID %u, could not find EVPN",
4496 sticky ? "sticky " : "", macaddr,
4497 ifp->name, ifp->ifindex, vid);
4498 return 0;
4499 }
4500
4501 if (!zevpn->vxlan_if) {
4502 if (IS_ZEBRA_DEBUG_VXLAN)
4503 zlog_debug(
4504 " VNI %u hash %p doesn't have intf upon local MAC ADD",
4505 zevpn->vni, zevpn);
4506 return -1;
4507 }
4508
4509 zvrf = zebra_vrf_get_evpn();
4510 return zebra_evpn_add_update_local_mac(zvrf, zevpn, ifp, macaddr, vid,
4511 sticky, local_inactive,
4512 dp_static, NULL);
4513 }
4514
4515 /*
4516 * Handle message from client to delete a remote VTEP for an EVPN.
4517 */
4518 void zebra_vxlan_remote_vtep_del_zapi(ZAPI_HANDLER_ARGS)
4519 {
4520 struct stream *s;
4521 unsigned short l = 0;
4522 vni_t vni;
4523 struct in_addr vtep_ip;
4524
4525 if (!is_evpn_enabled()) {
4526 zlog_debug(
4527 "%s: EVPN is not enabled yet we have received a VTEP DEL msg",
4528 __func__);
4529 return;
4530 }
4531
4532 if (!EVPN_ENABLED(zvrf)) {
4533 zlog_debug("Recv VTEP DEL zapi for non-EVPN VRF %u",
4534 zvrf_id(zvrf));
4535 return;
4536 }
4537
4538 s = msg;
4539
4540 while (l < hdr->length) {
4541 int flood_control __attribute__((unused));
4542
4543 /* Obtain each remote VTEP and process. */
4544 STREAM_GETL(s, vni);
4545 l += 4;
4546 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
4547 l += IPV4_MAX_BYTELEN;
4548
4549 /* Flood control is intentionally ignored right now */
4550 STREAM_GETL(s, flood_control);
4551 l += 4;
4552
4553 if (IS_ZEBRA_DEBUG_VXLAN)
4554 zlog_debug("Recv VTEP DEL %pI4 VNI %u from %s",
4555 &vtep_ip, vni,
4556 zebra_route_string(client->proto));
4557
4558 /* Enqueue for processing */
4559 zebra_rib_queue_evpn_rem_vtep_del(zvrf_id(zvrf), vni, vtep_ip);
4560 }
4561
4562 stream_failure:
4563 return;
4564 }
4565
4566 /*
4567 * Handle message from client to delete a remote VTEP for an EVPN.
4568 */
4569 void zebra_vxlan_remote_vtep_del(vrf_id_t vrf_id, vni_t vni,
4570 struct in_addr vtep_ip)
4571 {
4572 struct zebra_evpn *zevpn;
4573 struct zebra_vtep *zvtep;
4574 struct interface *ifp;
4575 struct zebra_if *zif;
4576 struct zebra_vrf *zvrf;
4577
4578 if (!is_evpn_enabled()) {
4579 zlog_debug("%s: Can't process vtep del: EVPN is not enabled",
4580 __func__);
4581 return;
4582 }
4583
4584 zvrf = zebra_vrf_lookup_by_id(vrf_id);
4585 if (!zvrf)
4586 return;
4587
4588 if (!EVPN_ENABLED(zvrf)) {
4589 zlog_debug("Can't process VTEP DEL for non-EVPN VRF %u",
4590 zvrf_id(zvrf));
4591 return;
4592 }
4593
4594 /* Locate VNI hash entry - expected to exist. */
4595 zevpn = zebra_evpn_lookup(vni);
4596 if (!zevpn) {
4597 if (IS_ZEBRA_DEBUG_VXLAN)
4598 zlog_debug(
4599 "Failed to locate VNI hash for remote VTEP DEL, VNI %u",
4600 vni);
4601 return;
4602 }
4603
4604 ifp = zevpn->vxlan_if;
4605 if (!ifp) {
4606 zlog_debug(
4607 "VNI %u hash %p doesn't have intf upon remote VTEP DEL",
4608 zevpn->vni, zevpn);
4609 return;
4610 }
4611 zif = ifp->info;
4612
4613 /* If down or not mapped to a bridge, we're done. */
4614 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
4615 return;
4616
4617 /* If the remote VTEP does not exist, there's nothing more to
4618 * do.
4619 * Otherwise, uninstall any remote MACs pointing to this VTEP
4620 * and then, the VTEP entry itself and remove it.
4621 */
4622 zvtep = zebra_evpn_vtep_find(zevpn, &vtep_ip);
4623 if (!zvtep)
4624 return;
4625
4626 zebra_evpn_vtep_uninstall(zevpn, &vtep_ip);
4627 zebra_evpn_vtep_del(zevpn, zvtep);
4628 }
4629
4630 /*
4631 * Handle message from client to add a remote VTEP for an EVPN.
4632 */
4633 void zebra_vxlan_remote_vtep_add(vrf_id_t vrf_id, vni_t vni,
4634 struct in_addr vtep_ip, int flood_control)
4635 {
4636 struct zebra_evpn *zevpn;
4637 struct interface *ifp;
4638 struct zebra_if *zif;
4639 struct zebra_vtep *zvtep;
4640 struct zebra_vrf *zvrf;
4641
4642 if (!is_evpn_enabled()) {
4643 zlog_debug("%s: EVPN not enabled: can't process a VTEP ADD",
4644 __func__);
4645 return;
4646 }
4647
4648 zvrf = zebra_vrf_lookup_by_id(vrf_id);
4649 if (!zvrf)
4650 return;
4651
4652 if (!EVPN_ENABLED(zvrf)) {
4653 zlog_debug("Can't process VTEP ADD for non-EVPN VRF %u",
4654 zvrf_id(zvrf));
4655 return;
4656 }
4657
4658 /* Locate VNI hash entry - expected to exist. */
4659 zevpn = zebra_evpn_lookup(vni);
4660 if (!zevpn) {
4661 flog_err(
4662 EC_ZEBRA_VTEP_ADD_FAILED,
4663 "Failed to locate EVPN hash upon remote VTEP ADD, VNI %u",
4664 vni);
4665 return;
4666 }
4667
4668 ifp = zevpn->vxlan_if;
4669 if (!ifp) {
4670 flog_err(
4671 EC_ZEBRA_VTEP_ADD_FAILED,
4672 "VNI %u hash %p doesn't have intf upon remote VTEP ADD",
4673 zevpn->vni, zevpn);
4674 return;
4675 }
4676
4677 zif = ifp->info;
4678
4679 /* If down or not mapped to a bridge, we're done. */
4680 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
4681 return;
4682
4683 zvtep = zebra_evpn_vtep_find(zevpn, &vtep_ip);
4684 if (zvtep) {
4685 /* If the remote VTEP already exists check if
4686 * the flood mode has changed
4687 */
4688 if (zvtep->flood_control != flood_control) {
4689 if (zvtep->flood_control == VXLAN_FLOOD_DISABLED)
4690 /* old mode was head-end-replication but
4691 * is no longer; get rid of the HER fdb
4692 * entry installed before
4693 */
4694 zebra_evpn_vtep_uninstall(zevpn, &vtep_ip);
4695 zvtep->flood_control = flood_control;
4696 zebra_evpn_vtep_install(zevpn, zvtep);
4697 }
4698 } else {
4699 zvtep = zebra_evpn_vtep_add(zevpn, &vtep_ip, flood_control);
4700 if (zvtep)
4701 zebra_evpn_vtep_install(zevpn, zvtep);
4702 else
4703 flog_err(EC_ZEBRA_VTEP_ADD_FAILED,
4704 "Failed to add remote VTEP, VNI %u zevpn %p",
4705 vni, zevpn);
4706 }
4707 }
4708
4709 /*
4710 * Handle message from client to add a remote VTEP for an EVPN.
4711 */
4712 void zebra_vxlan_remote_vtep_add_zapi(ZAPI_HANDLER_ARGS)
4713 {
4714 struct stream *s;
4715 unsigned short l = 0;
4716 vni_t vni;
4717 struct in_addr vtep_ip;
4718 int flood_control;
4719
4720 if (!is_evpn_enabled()) {
4721 zlog_debug(
4722 "%s: EVPN not enabled yet we received a VTEP ADD zapi msg",
4723 __func__);
4724 return;
4725 }
4726
4727 if (!EVPN_ENABLED(zvrf)) {
4728 zlog_debug("Recv VTEP ADD zapi for non-EVPN VRF %u",
4729 zvrf_id(zvrf));
4730 return;
4731 }
4732
4733 s = msg;
4734
4735 while (l < hdr->length) {
4736 /* Obtain each remote VTEP and process. */
4737 STREAM_GETL(s, vni);
4738 l += 4;
4739 STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
4740 STREAM_GETL(s, flood_control);
4741 l += IPV4_MAX_BYTELEN + 4;
4742
4743 if (IS_ZEBRA_DEBUG_VXLAN)
4744 zlog_debug("Recv VTEP ADD %pI4 VNI %u flood %d from %s",
4745 &vtep_ip, vni, flood_control,
4746 zebra_route_string(client->proto));
4747
4748 /* Enqueue for processing */
4749 zebra_rib_queue_evpn_rem_vtep_add(zvrf_id(zvrf), vni, vtep_ip,
4750 flood_control);
4751 }
4752
4753 stream_failure:
4754 return;
4755 }
4756
4757 /*
4758 * Add/Del gateway macip to evpn
4759 * g/w can be:
4760 * 1. SVI interface on a vlan aware bridge
4761 * 2. SVI interface on a vlan unaware bridge
4762 * 3. vrr interface (MACVLAN) associated to a SVI
4763 * We advertise macip routes for an interface if it is associated to VxLan vlan
4764 */
4765 int zebra_vxlan_add_del_gw_macip(struct interface *ifp, const struct prefix *p,
4766 int add)
4767 {
4768 struct ipaddr ip;
4769 struct ethaddr macaddr;
4770 struct zebra_evpn *zevpn = NULL;
4771
4772 memset(&ip, 0, sizeof(ip));
4773 memset(&macaddr, 0, sizeof(macaddr));
4774
4775 /* Check if EVPN is enabled. */
4776 if (!is_evpn_enabled())
4777 return 0;
4778
4779 if (IS_ZEBRA_IF_MACVLAN(ifp)) {
4780 struct interface *svi_if =
4781 NULL; /* SVI corresponding to the MACVLAN */
4782 struct zebra_if *ifp_zif =
4783 NULL; /* Zebra daemon specific info for MACVLAN */
4784 struct zebra_if *svi_if_zif =
4785 NULL; /* Zebra daemon specific info for SVI*/
4786
4787 ifp_zif = ifp->info;
4788 if (!ifp_zif)
4789 return -1;
4790
4791 /*
4792 * for a MACVLAN interface the link represents the svi_if
4793 */
4794 svi_if = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT),
4795 ifp_zif->link_ifindex);
4796 if (!svi_if) {
4797 zlog_debug("MACVLAN %s(%u) without link information",
4798 ifp->name, ifp->ifindex);
4799 return -1;
4800 }
4801
4802 if (IS_ZEBRA_IF_VLAN(svi_if)) {
4803 /*
4804 * If it is a vlan aware bridge then the link gives the
4805 * bridge information
4806 */
4807 struct interface *svi_if_link = NULL;
4808
4809 svi_if_zif = svi_if->info;
4810 if (svi_if_zif) {
4811 svi_if_link = if_lookup_by_index_per_ns(
4812 zebra_ns_lookup(NS_DEFAULT),
4813 svi_if_zif->link_ifindex);
4814 zevpn = zebra_evpn_from_svi(svi_if,
4815 svi_if_link);
4816 }
4817 } else if (IS_ZEBRA_IF_BRIDGE(svi_if)) {
4818 /*
4819 * If it is a vlan unaware bridge then svi is the bridge
4820 * itself
4821 */
4822 zevpn = zebra_evpn_from_svi(svi_if, svi_if);
4823 }
4824 } else if (IS_ZEBRA_IF_VLAN(ifp)) {
4825 struct zebra_if *svi_if_zif =
4826 NULL; /* Zebra daemon specific info for SVI */
4827 struct interface *svi_if_link =
4828 NULL; /* link info for the SVI = bridge info */
4829
4830 svi_if_zif = ifp->info;
4831 if (svi_if_zif) {
4832 svi_if_link = if_lookup_by_index_per_ns(
4833 zebra_ns_lookup(NS_DEFAULT),
4834 svi_if_zif->link_ifindex);
4835 if (svi_if_link)
4836 zevpn = zebra_evpn_from_svi(ifp, svi_if_link);
4837 }
4838 } else if (IS_ZEBRA_IF_BRIDGE(ifp)) {
4839 zevpn = zebra_evpn_from_svi(ifp, ifp);
4840 }
4841
4842 if (!zevpn)
4843 return 0;
4844
4845 if (!zevpn->vxlan_if) {
4846 zlog_debug("VNI %u hash %p doesn't have intf upon MACVLAN up",
4847 zevpn->vni, zevpn);
4848 return -1;
4849 }
4850
4851 /* VRR IP is advertised only if gw-macip-adv-enabled */
4852 if (IS_ZEBRA_IF_MACVLAN(ifp)) {
4853 if (!advertise_gw_macip_enabled(zevpn))
4854 return 0;
4855 } else {
4856 /* SVI IP is advertised if gw or svi macip-adv-enabled */
4857 if (!advertise_svi_macip_enabled(zevpn)
4858 && !advertise_gw_macip_enabled(zevpn))
4859 return 0;
4860 }
4861
4862 memcpy(&macaddr.octet, ifp->hw_addr, ETH_ALEN);
4863
4864 if (p->family == AF_INET) {
4865 ip.ipa_type = IPADDR_V4;
4866 memcpy(&(ip.ipaddr_v4), &(p->u.prefix4),
4867 sizeof(struct in_addr));
4868 } else if (p->family == AF_INET6) {
4869 ip.ipa_type = IPADDR_V6;
4870 memcpy(&(ip.ipaddr_v6), &(p->u.prefix6),
4871 sizeof(struct in6_addr));
4872 }
4873
4874
4875 if (add)
4876 zebra_evpn_gw_macip_add(ifp, zevpn, &macaddr, &ip);
4877 else
4878 zebra_evpn_gw_macip_del(ifp, zevpn, &ip);
4879
4880 return 0;
4881 }
4882
4883 /*
4884 * Handle SVI interface going down.
4885 * SVI can be associated to either L3-VNI or L2-VNI.
4886 * For L2-VNI: At this point, this is a NOP since
4887 * the kernel deletes the neighbor entries on this SVI (if any).
4888 * We only need to update the vrf corresponding to zevpn.
4889 * For L3-VNI: L3-VNI is operationally down, update mac-ip routes and delete
4890 * from bgp
4891 */
4892 int zebra_vxlan_svi_down(struct interface *ifp, struct interface *link_if)
4893 {
4894 struct zebra_l3vni *zl3vni = NULL;
4895
4896 zl3vni = zl3vni_from_svi(ifp, link_if);
4897 if (zl3vni) {
4898
4899 /* process l3-vni down */
4900 zebra_vxlan_process_l3vni_oper_down(zl3vni);
4901
4902 /* remove association with svi-if */
4903 zl3vni->svi_if = NULL;
4904 } else {
4905 struct zebra_evpn *zevpn = NULL;
4906
4907 /* Unlink the SVI from the access VLAN */
4908 zebra_evpn_acc_bd_svi_set(ifp->info, link_if->info, false);
4909
4910 /* since we dont have svi corresponding to zevpn, we associate it
4911 * to default vrf. Note: the corresponding neigh entries on the
4912 * SVI would have already been deleted */
4913 zevpn = zebra_evpn_from_svi(ifp, link_if);
4914
4915 if (zevpn) {
4916 /* remove from l3-vni list */
4917 zl3vni = zl3vni_from_vrf(zevpn->vrf_id);
4918 if (zl3vni)
4919 listnode_delete(zl3vni->l2vnis, zevpn);
4920
4921 zevpn->svi_if = NULL;
4922 zevpn->vrf_id = VRF_DEFAULT;
4923
4924 /* update the tenant vrf in BGP */
4925 if (if_is_operative(zevpn->vxlan_if))
4926 zebra_evpn_send_add_to_client(zevpn);
4927 }
4928 }
4929 return 0;
4930 }
4931
4932 /*
4933 * Handle SVI interface coming up.
4934 * SVI can be associated to L3-VNI (l3vni vxlan interface) or L2-VNI (l2-vni
4935 * vxlan intf).
4936 * For L2-VNI: we need to install any remote neighbors entried (used for
4937 * arp-suppression)
4938 * For L3-VNI: SVI will be used to get the rmac to be used with L3-VNI
4939 */
4940 int zebra_vxlan_svi_up(struct interface *ifp, struct interface *link_if)
4941 {
4942 struct zebra_evpn *zevpn = NULL;
4943 struct zebra_l3vni *zl3vni = NULL;
4944
4945 zl3vni = zl3vni_from_svi(ifp, link_if);
4946 if (zl3vni) {
4947
4948 /* associate with svi */
4949 zl3vni->svi_if = ifp;
4950
4951 /* process oper-up */
4952 if (is_l3vni_oper_up(zl3vni))
4953 zebra_vxlan_process_l3vni_oper_up(zl3vni);
4954 } else {
4955
4956 /* process SVI up for l2-vni */
4957 struct neigh_walk_ctx n_wctx;
4958
4959 zevpn = zebra_evpn_from_svi(ifp, link_if);
4960 if (!zevpn)
4961 return 0;
4962
4963 if (!zevpn->vxlan_if) {
4964 zlog_debug(
4965 "VNI %u hash %p doesn't have intf upon SVI up",
4966 zevpn->vni, zevpn);
4967 return -1;
4968 }
4969
4970 if (IS_ZEBRA_DEBUG_VXLAN)
4971 zlog_debug(
4972 "SVI %s(%u) VNI %u VRF %s is UP, installing neighbors",
4973 ifp->name, ifp->ifindex, zevpn->vni,
4974 ifp->vrf->name);
4975
4976 /* update the vrf information for l2-vni and inform bgp */
4977 zevpn->svi_if = ifp;
4978 zevpn->vrf_id = ifp->vrf->vrf_id;
4979
4980 zl3vni = zl3vni_from_vrf(zevpn->vrf_id);
4981 if (zl3vni)
4982 listnode_add_sort_nodup(zl3vni->l2vnis, zevpn);
4983
4984 if (if_is_operative(zevpn->vxlan_if))
4985 zebra_evpn_send_add_to_client(zevpn);
4986
4987 /* Install any remote neighbors for this VNI. */
4988 memset(&n_wctx, 0, sizeof(n_wctx));
4989 n_wctx.zevpn = zevpn;
4990 hash_iterate(zevpn->neigh_table, zebra_evpn_install_neigh_hash,
4991 &n_wctx);
4992
4993 /* Link the SVI from the access VLAN */
4994 zebra_evpn_acc_bd_svi_set(ifp->info, link_if->info, true);
4995
4996 /* Update MACIP routes created by advertise-svi-ip */
4997 if (advertise_svi_macip_enabled(zevpn)) {
4998 zebra_evpn_del_macip_for_intf(ifp, zevpn);
4999 zebra_evpn_add_macip_for_intf(ifp, zevpn);
5000 }
5001 }
5002
5003 return 0;
5004 }
5005
5006 /*
5007 * Handle MAC-VLAN interface going down.
5008 * L3VNI: When MAC-VLAN interface goes down,
5009 * find its associated SVI and update type2/type-5 routes
5010 * with SVI as RMAC
5011 */
5012 void zebra_vxlan_macvlan_down(struct interface *ifp)
5013 {
5014 struct zebra_l3vni *zl3vni = NULL;
5015 struct zebra_if *zif, *link_zif;
5016 struct interface *link_ifp, *link_if;
5017
5018 zif = ifp->info;
5019 assert(zif);
5020 link_ifp = zif->link;
5021 if (!link_ifp) {
5022 if (IS_ZEBRA_DEBUG_VXLAN)
5023 zlog_debug(
5024 "macvlan parent link is not found. Parent index %d ifp %s",
5025 zif->link_ifindex,
5026 ifindex2ifname(zif->link_ifindex,
5027 ifp->vrf->vrf_id));
5028 return;
5029 }
5030 link_zif = link_ifp->info;
5031 assert(link_zif);
5032
5033 link_if = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT),
5034 link_zif->link_ifindex);
5035
5036 zl3vni = zl3vni_from_svi(link_ifp, link_if);
5037 if (zl3vni) {
5038 zl3vni->mac_vlan_if = NULL;
5039 if (is_l3vni_oper_up(zl3vni))
5040 zebra_vxlan_process_l3vni_oper_up(zl3vni);
5041 }
5042 }
5043
5044 /*
5045 * Handle MAC-VLAN interface going up.
5046 * L3VNI: When MAC-VLAN interface comes up,
5047 * find its associated SVI and update type-2 routes
5048 * with MAC-VLAN's MAC as RMAC and for type-5 routes
5049 * use SVI's MAC as RMAC.
5050 */
5051 void zebra_vxlan_macvlan_up(struct interface *ifp)
5052 {
5053 struct zebra_l3vni *zl3vni = NULL;
5054 struct zebra_if *zif, *link_zif;
5055 struct interface *link_ifp, *link_if;
5056
5057 zif = ifp->info;
5058 assert(zif);
5059 link_ifp = zif->link;
5060 link_zif = link_ifp->info;
5061 assert(link_zif);
5062
5063 link_if = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT),
5064 link_zif->link_ifindex);
5065 zl3vni = zl3vni_from_svi(link_ifp, link_if);
5066 if (zl3vni) {
5067 /* associate with macvlan (VRR) interface */
5068 zl3vni->mac_vlan_if = ifp;
5069
5070 /* process oper-up */
5071 if (is_l3vni_oper_up(zl3vni))
5072 zebra_vxlan_process_l3vni_oper_up(zl3vni);
5073 }
5074 }
5075
5076 int zebra_vxlan_process_vrf_vni_cmd(struct zebra_vrf *zvrf, vni_t vni,
5077 char *err, int err_str_sz, int filter,
5078 int add)
5079 {
5080 struct zebra_l3vni *zl3vni = NULL;
5081 struct zebra_vrf *zvrf_evpn = NULL;
5082
5083 zvrf_evpn = zebra_vrf_get_evpn();
5084
5085 if (IS_ZEBRA_DEBUG_VXLAN)
5086 zlog_debug("vrf %s vni %u %s", zvrf_name(zvrf), vni,
5087 add ? "ADD" : "DEL");
5088
5089 if (add) {
5090 /* check if the vni is already present under zvrf */
5091 if (zvrf->l3vni) {
5092 snprintf(err, err_str_sz,
5093 "VNI is already configured under the vrf");
5094 return -1;
5095 }
5096
5097 /* check if this VNI is already present in the system */
5098 zl3vni = zl3vni_lookup(vni);
5099 if (zl3vni) {
5100 snprintf(err, err_str_sz,
5101 "VNI is already configured as L3-VNI");
5102 return -1;
5103 }
5104
5105 /* Remove L2VNI if present */
5106 zebra_vxlan_handle_vni_transition(zvrf, vni, add);
5107
5108 /* add the L3-VNI to the global table */
5109 zl3vni = zl3vni_add(vni, zvrf_id(zvrf));
5110
5111 /* associate the vrf with vni */
5112 zvrf->l3vni = vni;
5113
5114 /* set the filter in l3vni to denote if we are using l3vni only
5115 * for prefix routes
5116 */
5117 if (filter)
5118 SET_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY);
5119
5120 /* associate with vxlan-intf;
5121 * we need to associate with the vxlan-intf first
5122 */
5123 zl3vni->vxlan_if = zl3vni_map_to_vxlan_if(zl3vni);
5124
5125 /* associate with corresponding SVI interface, we can associate
5126 * with svi-if only after vxlan interface association is
5127 * complete
5128 */
5129 zl3vni->svi_if = zl3vni_map_to_svi_if(zl3vni);
5130
5131 zl3vni->mac_vlan_if = zl3vni_map_to_mac_vlan_if(zl3vni);
5132
5133 if (IS_ZEBRA_DEBUG_VXLAN)
5134 zlog_debug(
5135 "%s: l3vni %u svi_if %s mac_vlan_if %s",
5136 __func__, vni,
5137 zl3vni->svi_if ? zl3vni->svi_if->name : "NIL",
5138 zl3vni->mac_vlan_if ? zl3vni->mac_vlan_if->name
5139 : "NIL");
5140
5141 /* formulate l2vni list */
5142 hash_iterate(zvrf_evpn->evpn_table, zevpn_add_to_l3vni_list,
5143 zl3vni);
5144
5145 if (is_l3vni_oper_up(zl3vni))
5146 zebra_vxlan_process_l3vni_oper_up(zl3vni);
5147
5148 } else {
5149 zl3vni = zl3vni_lookup(vni);
5150 if (!zl3vni) {
5151 snprintf(err, err_str_sz, "VNI doesn't exist");
5152 return -1;
5153 }
5154
5155 if (zvrf->l3vni != vni) {
5156 snprintf(err, err_str_sz,
5157 "VNI %d doesn't exist in VRF: %s",
5158 vni, zvrf->vrf->name);
5159 return -1;
5160 }
5161
5162 if (filter && !CHECK_FLAG(zl3vni->filter, PREFIX_ROUTES_ONLY)) {
5163 snprintf(err, ERR_STR_SZ,
5164 "prefix-routes-only is not set for the vni");
5165 return -1;
5166 }
5167
5168 zebra_vxlan_process_l3vni_oper_down(zl3vni);
5169
5170 /* delete and uninstall all rmacs */
5171 hash_iterate(zl3vni->rmac_table, zl3vni_del_rmac_hash_entry,
5172 zl3vni);
5173
5174 /* delete and uninstall all next-hops */
5175 hash_iterate(zl3vni->nh_table, zl3vni_del_nh_hash_entry,
5176 zl3vni);
5177
5178 zvrf->l3vni = 0;
5179 zl3vni_del(zl3vni);
5180
5181 /* Add L2VNI for this VNI */
5182 zebra_vxlan_handle_vni_transition(zvrf, vni, add);
5183 }
5184 return 0;
5185 }
5186
5187 int zebra_vxlan_vrf_enable(struct zebra_vrf *zvrf)
5188 {
5189 struct zebra_l3vni *zl3vni = NULL;
5190
5191 if (zvrf->l3vni)
5192 zl3vni = zl3vni_lookup(zvrf->l3vni);
5193 if (!zl3vni)
5194 return 0;
5195
5196 zl3vni->vrf_id = zvrf_id(zvrf);
5197 if (is_l3vni_oper_up(zl3vni))
5198 zebra_vxlan_process_l3vni_oper_up(zl3vni);
5199 return 0;
5200 }
5201
5202 int zebra_vxlan_vrf_disable(struct zebra_vrf *zvrf)
5203 {
5204 struct zebra_l3vni *zl3vni = NULL;
5205
5206 if (zvrf->l3vni)
5207 zl3vni = zl3vni_lookup(zvrf->l3vni);
5208 if (!zl3vni)
5209 return 0;
5210
5211 zebra_vxlan_process_l3vni_oper_down(zl3vni);
5212
5213 /* delete and uninstall all rmacs */
5214 hash_iterate(zl3vni->rmac_table, zl3vni_del_rmac_hash_entry, zl3vni);
5215 /* delete and uninstall all next-hops */
5216 hash_iterate(zl3vni->nh_table, zl3vni_del_nh_hash_entry, zl3vni);
5217
5218 zl3vni->vrf_id = VRF_UNKNOWN;
5219
5220 return 0;
5221 }
5222
5223 int zebra_vxlan_vrf_delete(struct zebra_vrf *zvrf)
5224 {
5225 struct zebra_l3vni *zl3vni = NULL;
5226 vni_t vni;
5227
5228 if (zvrf->l3vni)
5229 zl3vni = zl3vni_lookup(zvrf->l3vni);
5230 if (!zl3vni)
5231 return 0;
5232
5233 vni = zl3vni->vni;
5234 zl3vni_del(zl3vni);
5235 zebra_vxlan_handle_vni_transition(zvrf, vni, 0);
5236
5237 return 0;
5238 }
5239
5240 /*
5241 * Handle message from client to specify the flooding mechanism for
5242 * BUM packets. The default is to do head-end (ingress) replication
5243 * and the other supported option is to disable it. This applies to
5244 * all BUM traffic and disabling it applies to both the transmit and
5245 * receive direction.
5246 */
5247 void zebra_vxlan_flood_control(ZAPI_HANDLER_ARGS)
5248 {
5249 struct stream *s;
5250 enum vxlan_flood_control flood_ctrl;
5251
5252 if (!EVPN_ENABLED(zvrf)) {
5253 zlog_err("EVPN flood control for non-EVPN VRF %u",
5254 zvrf_id(zvrf));
5255 return;
5256 }
5257
5258 s = msg;
5259 STREAM_GETC(s, flood_ctrl);
5260
5261 if (IS_ZEBRA_DEBUG_VXLAN)
5262 zlog_debug("EVPN flood control %u, currently %u",
5263 flood_ctrl, zvrf->vxlan_flood_ctrl);
5264
5265 if (zvrf->vxlan_flood_ctrl == flood_ctrl)
5266 return;
5267
5268 zvrf->vxlan_flood_ctrl = flood_ctrl;
5269
5270 /* Install or uninstall flood entries corresponding to
5271 * remote VTEPs.
5272 */
5273 hash_iterate(zvrf->evpn_table, zebra_evpn_handle_flooding_remote_vteps,
5274 zvrf);
5275
5276 stream_failure:
5277 return;
5278 }
5279
5280 /*
5281 * Handle message from client to enable/disable advertisement of svi macip
5282 * routes
5283 */
5284 void zebra_vxlan_advertise_svi_macip(ZAPI_HANDLER_ARGS)
5285 {
5286 struct stream *s;
5287 int advertise;
5288 vni_t vni = 0;
5289 struct zebra_evpn *zevpn = NULL;
5290 struct interface *ifp = NULL;
5291
5292 if (!EVPN_ENABLED(zvrf)) {
5293 zlog_debug("EVPN SVI-MACIP Adv for non-EVPN VRF %u",
5294 zvrf_id(zvrf));
5295 return;
5296 }
5297
5298 s = msg;
5299 STREAM_GETC(s, advertise);
5300 STREAM_GETL(s, vni);
5301
5302 if (!vni) {
5303 if (IS_ZEBRA_DEBUG_VXLAN)
5304 zlog_debug("EVPN SVI-MACIP Adv %s, currently %s",
5305 advertise ? "enabled" : "disabled",
5306 advertise_svi_macip_enabled(NULL)
5307 ? "enabled"
5308 : "disabled");
5309
5310 if (zvrf->advertise_svi_macip == advertise)
5311 return;
5312
5313
5314 if (advertise) {
5315 zvrf->advertise_svi_macip = advertise;
5316 hash_iterate(zvrf->evpn_table,
5317 zebra_evpn_gw_macip_add_for_evpn_hash,
5318 NULL);
5319 } else {
5320 hash_iterate(zvrf->evpn_table,
5321 zebra_evpn_svi_macip_del_for_evpn_hash,
5322 NULL);
5323 zvrf->advertise_svi_macip = advertise;
5324 }
5325
5326 } else {
5327 struct zebra_if *zif = NULL;
5328 struct interface *vlan_if = NULL;
5329 struct zebra_vxlan_vni *zl2_info_vni;
5330 int old_advertise;
5331
5332 zevpn = zebra_evpn_lookup(vni);
5333 if (!zevpn)
5334 return;
5335
5336 if (IS_ZEBRA_DEBUG_VXLAN)
5337 zlog_debug(
5338 "EVPN SVI macip Adv %s on VNI %d, currently %s",
5339 advertise ? "enabled" : "disabled", vni,
5340 advertise_svi_macip_enabled(zevpn)
5341 ? "enabled"
5342 : "disabled");
5343
5344 old_advertise = advertise_svi_macip_enabled(zevpn);
5345
5346 /* Store flag even though SVI is not present.
5347 * Once SVI comes up triggers self MAC-IP route add.
5348 */
5349 zevpn->advertise_svi_macip = advertise;
5350 if (advertise_svi_macip_enabled(zevpn) == old_advertise)
5351 return;
5352
5353 ifp = zevpn->vxlan_if;
5354 if (!ifp)
5355 return;
5356
5357 zif = ifp->info;
5358
5359 /* If down or not mapped to a bridge, we're done. */
5360 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
5361 return;
5362
5363 zl2_info_vni = zebra_vxlan_if_vni_find(zif, vni);
5364 if (!zl2_info_vni)
5365 return;
5366
5367 vlan_if = zvni_map_to_svi(zl2_info_vni->access_vlan,
5368 zif->brslave_info.br_if);
5369 if (!vlan_if)
5370 return;
5371
5372 if (advertise) {
5373 /* Add primary SVI MAC-IP */
5374 zebra_evpn_add_macip_for_intf(vlan_if, zevpn);
5375 } else {
5376 /* Del primary SVI MAC-IP */
5377 zebra_evpn_del_macip_for_intf(vlan_if, zevpn);
5378 }
5379 }
5380
5381 stream_failure:
5382 return;
5383 }
5384
5385 /*
5386 * Handle message from client to enable/disable advertisement of g/w macip
5387 * routes
5388 */
5389 void zebra_vxlan_advertise_subnet(ZAPI_HANDLER_ARGS)
5390 {
5391 struct stream *s;
5392 int advertise;
5393 vni_t vni = 0;
5394 struct zebra_evpn *zevpn = NULL;
5395 struct interface *ifp = NULL;
5396 struct zebra_if *zif = NULL;
5397 struct interface *vlan_if = NULL;
5398 struct zebra_vxlan_vni *zl2_info_vni = NULL;
5399
5400 if (!EVPN_ENABLED(zvrf)) {
5401 zlog_debug("EVPN GW-MACIP Adv for non-EVPN VRF %u",
5402 zvrf_id(zvrf));
5403 return;
5404 }
5405
5406 s = msg;
5407 STREAM_GETC(s, advertise);
5408 STREAM_GET(&vni, s, 3);
5409
5410 zevpn = zebra_evpn_lookup(vni);
5411 if (!zevpn)
5412 return;
5413
5414 if (zevpn->advertise_subnet == advertise)
5415 return;
5416
5417 if (IS_ZEBRA_DEBUG_VXLAN)
5418 zlog_debug("EVPN subnet Adv %s on VNI %d, currently %s",
5419 advertise ? "enabled" : "disabled", vni,
5420 zevpn->advertise_subnet ? "enabled" : "disabled");
5421
5422
5423 zevpn->advertise_subnet = advertise;
5424
5425 ifp = zevpn->vxlan_if;
5426 if (!ifp)
5427 return;
5428
5429 zif = ifp->info;
5430
5431 /* If down or not mapped to a bridge, we're done. */
5432 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
5433 return;
5434
5435 zl2_info_vni = zebra_vxlan_if_vni_find(zif, vni);
5436 if (!zl2_info_vni)
5437 return;
5438
5439 vlan_if = zvni_map_to_svi(zl2_info_vni->access_vlan,
5440 zif->brslave_info.br_if);
5441 if (!vlan_if)
5442 return;
5443
5444 if (zevpn->advertise_subnet)
5445 zebra_evpn_advertise_subnet(zevpn, vlan_if, 1);
5446 else
5447 zebra_evpn_advertise_subnet(zevpn, vlan_if, 0);
5448
5449 stream_failure:
5450 return;
5451 }
5452
5453 /*
5454 * Handle message from client to enable/disable advertisement of g/w macip
5455 * routes
5456 */
5457 void zebra_vxlan_advertise_gw_macip(ZAPI_HANDLER_ARGS)
5458 {
5459 struct stream *s;
5460 int advertise;
5461 vni_t vni = 0;
5462 struct zebra_evpn *zevpn = NULL;
5463 struct interface *ifp = NULL;
5464
5465 if (!EVPN_ENABLED(zvrf)) {
5466 zlog_debug("EVPN GW-MACIP Adv for non-EVPN VRF %u",
5467 zvrf_id(zvrf));
5468 return;
5469 }
5470
5471 s = msg;
5472 STREAM_GETC(s, advertise);
5473 STREAM_GETL(s, vni);
5474
5475 if (!vni) {
5476 if (IS_ZEBRA_DEBUG_VXLAN)
5477 zlog_debug("EVPN gateway macip Adv %s, currently %s",
5478 advertise ? "enabled" : "disabled",
5479 advertise_gw_macip_enabled(NULL)
5480 ? "enabled"
5481 : "disabled");
5482
5483 if (zvrf->advertise_gw_macip == advertise)
5484 return;
5485
5486 zvrf->advertise_gw_macip = advertise;
5487
5488 if (advertise_gw_macip_enabled(zevpn))
5489 hash_iterate(zvrf->evpn_table,
5490 zebra_evpn_gw_macip_add_for_evpn_hash,
5491 NULL);
5492 else
5493 hash_iterate(zvrf->evpn_table,
5494 zebra_evpn_gw_macip_del_for_evpn_hash,
5495 NULL);
5496
5497 } else {
5498 struct zebra_if *zif = NULL;
5499 struct interface *vlan_if = NULL;
5500 struct interface *vrr_if = NULL;
5501 struct zebra_vxlan_vni *zl2_info_vni = NULL;
5502 int old_advertise;
5503
5504 zevpn = zebra_evpn_lookup(vni);
5505 if (!zevpn)
5506 return;
5507
5508 if (IS_ZEBRA_DEBUG_VXLAN)
5509 zlog_debug(
5510 "EVPN gateway macip Adv %s on VNI %d, currently %s",
5511 advertise ? "enabled" : "disabled", vni,
5512 advertise_gw_macip_enabled(zevpn) ? "enabled"
5513 : "disabled");
5514
5515 old_advertise = advertise_gw_macip_enabled(zevpn);
5516
5517 zevpn->advertise_gw_macip = advertise;
5518 if (advertise_gw_macip_enabled(zevpn) == old_advertise)
5519 return;
5520
5521 ifp = zevpn->vxlan_if;
5522 if (!ifp)
5523 return;
5524
5525 zif = ifp->info;
5526
5527 /* If down or not mapped to a bridge, we're done. */
5528 if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
5529 return;
5530
5531 zl2_info_vni = zebra_vxlan_if_vni_find(zif, vni);
5532 if (!zl2_info_vni)
5533 return;
5534
5535 vlan_if = zvni_map_to_svi(zl2_info_vni->access_vlan,
5536 zif->brslave_info.br_if);
5537 if (!vlan_if)
5538 return;
5539
5540 if (advertise_gw_macip_enabled(zevpn)) {
5541 /* Add primary SVI MAC-IP */
5542 zebra_evpn_add_macip_for_intf(vlan_if, zevpn);
5543
5544 /* Add VRR MAC-IP - if any*/
5545 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
5546 if (vrr_if)
5547 zebra_evpn_add_macip_for_intf(vrr_if, zevpn);
5548 } else {
5549 /* Del primary MAC-IP */
5550 zebra_evpn_del_macip_for_intf(vlan_if, zevpn);
5551
5552 /* Del VRR MAC-IP - if any*/
5553 vrr_if = zebra_get_vrr_intf_for_svi(vlan_if);
5554 if (vrr_if)
5555 zebra_evpn_del_macip_for_intf(vrr_if, zevpn);
5556 }
5557 }
5558
5559 stream_failure:
5560 return;
5561 }
5562
5563 static int macfdb_read_ns(struct ns *ns,
5564 void *_in_param __attribute__((unused)),
5565 void **out_param __attribute__((unused)))
5566 {
5567 struct zebra_ns *zns = ns->info;
5568
5569 macfdb_read(zns);
5570 return NS_WALK_CONTINUE;
5571 }
5572
5573 static int neigh_read_ns(struct ns *ns,
5574 void *_in_param __attribute__((unused)),
5575 void **out_param __attribute__((unused)))
5576 {
5577 struct zebra_ns *zns = ns->info;
5578
5579 neigh_read(zns);
5580 return NS_WALK_CONTINUE;
5581 }
5582
5583 /*
5584 * Handle message from client to learn (or stop learning) about VNIs and MACs.
5585 * When enabled, the VNI hash table will be built and MAC FDB table read;
5586 * when disabled, the entries should be deleted and remote VTEPs and MACs
5587 * uninstalled from the kernel.
5588 * This also informs the setting for BUM handling at the time this change
5589 * occurs; it is relevant only when specifying "learn".
5590 */
5591 void zebra_vxlan_advertise_all_vni(ZAPI_HANDLER_ARGS)
5592 {
5593 struct stream *s = NULL;
5594 int advertise = 0;
5595 enum vxlan_flood_control flood_ctrl;
5596
5597 /* Mismatch between EVPN VRF and current VRF (should be prevented by
5598 * bgpd's cli) */
5599 if (is_evpn_enabled() && !EVPN_ENABLED(zvrf))
5600 return;
5601
5602 s = msg;
5603 STREAM_GETC(s, advertise);
5604 STREAM_GETC(s, flood_ctrl);
5605
5606 if (IS_ZEBRA_DEBUG_VXLAN)
5607 zlog_debug("EVPN VRF %s(%u) VNI Adv %s, currently %s, flood control %u",
5608 zvrf_name(zvrf), zvrf_id(zvrf),
5609 advertise ? "enabled" : "disabled",
5610 is_evpn_enabled() ? "enabled" : "disabled",
5611 flood_ctrl);
5612
5613 if (zvrf->advertise_all_vni == advertise)
5614 return;
5615
5616 zvrf->advertise_all_vni = advertise;
5617 if (EVPN_ENABLED(zvrf)) {
5618 zrouter.evpn_vrf = zvrf;
5619
5620 /* Note BUM handling */
5621 zvrf->vxlan_flood_ctrl = flood_ctrl;
5622
5623 /* Replay all ESs */
5624 zebra_evpn_es_send_all_to_client(true /* add */);
5625
5626 /* Build EVPN hash table and inform BGP. */
5627 zevpn_build_hash_table();
5628
5629 /* Add all SVI (L3 GW) MACs to BGP*/
5630 hash_iterate(zvrf->evpn_table,
5631 zebra_evpn_gw_macip_add_for_evpn_hash, NULL);
5632
5633 /* Read the MAC FDB */
5634 ns_walk_func(macfdb_read_ns, NULL, NULL);
5635
5636 /* Read neighbors */
5637 ns_walk_func(neigh_read_ns, NULL, NULL);
5638 } else {
5639 /* Cleanup VTEPs for all EVPNs - uninstall from
5640 * kernel and free entries.
5641 */
5642 hash_iterate(zvrf->evpn_table, zebra_evpn_vxlan_cleanup_all,
5643 zvrf);
5644
5645 /* Delete all ESs in BGP */
5646 zebra_evpn_es_send_all_to_client(false /* add */);
5647
5648 /* cleanup all l3vnis */
5649 hash_iterate(zrouter.l3vni_table, zl3vni_cleanup_all, NULL);
5650
5651 /* Mark as "no EVPN VRF" */
5652 zrouter.evpn_vrf = NULL;
5653 }
5654
5655 stream_failure:
5656 return;
5657 }
5658
5659 /*
5660 * Allocate EVPN hash table for this VRF and do other initialization.
5661 * NOTE: Currently supported only for default VRF.
5662 */
5663 void zebra_vxlan_init_tables(struct zebra_vrf *zvrf)
5664 {
5665 char buffer[80];
5666
5667 if (!zvrf)
5668 return;
5669
5670 snprintf(buffer, sizeof(buffer), "Zebra VRF EVPN Table: %s",
5671 zvrf->vrf->name);
5672 zvrf->evpn_table = hash_create_size(8, zebra_evpn_hash_keymake,
5673 zebra_evpn_hash_cmp, buffer);
5674
5675 snprintf(buffer, sizeof(buffer), "Zebra VxLAN SG Table: %s",
5676 zvrf->vrf->name);
5677 zvrf->vxlan_sg_table = hash_create_size(8, zebra_vxlan_sg_hash_key_make,
5678 zebra_vxlan_sg_hash_eq, buffer);
5679 }
5680
5681 /* Cleanup EVPN info, but don't free the table. */
5682 void zebra_vxlan_cleanup_tables(struct zebra_vrf *zvrf)
5683 {
5684 struct zebra_vrf *evpn_zvrf = zebra_vrf_get_evpn();
5685
5686 hash_iterate(zvrf->evpn_table, zebra_evpn_vxlan_cleanup_all, zvrf);
5687 zebra_vxlan_cleanup_sg_table(zvrf);
5688
5689 if (zvrf == evpn_zvrf)
5690 zebra_evpn_es_cleanup();
5691 }
5692
5693 /* Close all EVPN handling */
5694 void zebra_vxlan_close_tables(struct zebra_vrf *zvrf)
5695 {
5696 if (!zvrf)
5697 return;
5698 hash_iterate(zvrf->evpn_table, zebra_evpn_vxlan_cleanup_all, zvrf);
5699 hash_free(zvrf->evpn_table);
5700 if (zvrf->vxlan_sg_table) {
5701 zebra_vxlan_cleanup_sg_table(zvrf);
5702 hash_free(zvrf->vxlan_sg_table);
5703 zvrf->vxlan_sg_table = NULL;
5704 }
5705 }
5706
5707 /* init the l3vni table */
5708 void zebra_vxlan_init(void)
5709 {
5710 zrouter.l3vni_table = hash_create(l3vni_hash_keymake, l3vni_hash_cmp,
5711 "Zebra VRF L3 VNI table");
5712
5713 svd_nh_table = zebra_neigh_db_create("Zebra SVD next-hop table");
5714
5715 zrouter.evpn_vrf = NULL;
5716 zebra_evpn_mh_init();
5717 }
5718
5719 /* free l3vni table */
5720 void zebra_vxlan_disable(void)
5721 {
5722 hash_free(zrouter.l3vni_table);
5723 zebra_evpn_mh_terminate();
5724 }
5725
5726 /* get the l3vni svi ifindex */
5727 ifindex_t get_l3vni_svi_ifindex(vrf_id_t vrf_id)
5728 {
5729 struct zebra_l3vni *zl3vni = NULL;
5730
5731 zl3vni = zl3vni_from_vrf(vrf_id);
5732 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
5733 return 0;
5734
5735 return zl3vni->svi_if->ifindex;
5736 }
5737
5738 /* get the l3vni vxlan ifindex */
5739 ifindex_t get_l3vni_vxlan_ifindex(vrf_id_t vrf_id)
5740 {
5741 struct zebra_l3vni *zl3vni = NULL;
5742
5743 zl3vni = zl3vni_from_vrf(vrf_id);
5744 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
5745 return 0;
5746
5747 return zl3vni->vxlan_if->ifindex;
5748 }
5749
5750 /* get the l3vni vni */
5751 vni_t get_l3vni_vni(vrf_id_t vrf_id)
5752 {
5753 struct zebra_l3vni *zl3vni = NULL;
5754
5755 zl3vni = zl3vni_from_vrf(vrf_id);
5756 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
5757 return 0;
5758
5759 return zl3vni->vni;
5760 }
5761
5762 /* is the vrf l3vni SVD backed? */
5763 bool is_vrf_l3vni_svd_backed(vrf_id_t vrf_id)
5764 {
5765 struct zebra_l3vni *zl3vni = NULL;
5766
5767 zl3vni = zl3vni_from_vrf(vrf_id);
5768 if (!zl3vni || !is_l3vni_oper_up(zl3vni))
5769 return false;
5770
5771 return IS_ZL3VNI_SVD_BACKED(zl3vni);
5772 }
5773
5774 /************************** vxlan SG cache management ************************/
5775 /* Inform PIM about the mcast group */
5776 static int zebra_vxlan_sg_send(struct zebra_vrf *zvrf,
5777 struct prefix_sg *sg,
5778 char *sg_str, uint16_t cmd)
5779 {
5780 struct zserv *client = NULL;
5781 struct stream *s = NULL;
5782
5783 client = zserv_find_client(ZEBRA_ROUTE_PIM, 0);
5784 if (!client)
5785 return 0;
5786
5787 if (!CHECK_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG))
5788 return 0;
5789
5790 s = stream_new(ZEBRA_MAX_PACKET_SIZ);
5791
5792 zclient_create_header(s, cmd, VRF_DEFAULT);
5793 stream_putl(s, IPV4_MAX_BYTELEN);
5794 stream_put(s, &sg->src.s_addr, IPV4_MAX_BYTELEN);
5795 stream_put(s, &sg->grp.s_addr, IPV4_MAX_BYTELEN);
5796
5797 /* Write packet size. */
5798 stream_putw_at(s, 0, stream_get_endp(s));
5799
5800 if (IS_ZEBRA_DEBUG_VXLAN)
5801 zlog_debug(
5802 "Send %s %s to %s",
5803 (cmd == ZEBRA_VXLAN_SG_ADD) ? "add" : "del", sg_str,
5804 zebra_route_string(client->proto));
5805
5806 if (cmd == ZEBRA_VXLAN_SG_ADD)
5807 client->vxlan_sg_add_cnt++;
5808 else
5809 client->vxlan_sg_del_cnt++;
5810
5811 return zserv_send_message(client, s);
5812 }
5813
5814 static unsigned int zebra_vxlan_sg_hash_key_make(const void *p)
5815 {
5816 const struct zebra_vxlan_sg *vxlan_sg = p;
5817
5818 return (jhash_2words(vxlan_sg->sg.src.s_addr,
5819 vxlan_sg->sg.grp.s_addr, 0));
5820 }
5821
5822 static bool zebra_vxlan_sg_hash_eq(const void *p1, const void *p2)
5823 {
5824 const struct zebra_vxlan_sg *sg1 = p1;
5825 const struct zebra_vxlan_sg *sg2 = p2;
5826
5827 return ((sg1->sg.src.s_addr == sg2->sg.src.s_addr)
5828 && (sg1->sg.grp.s_addr == sg2->sg.grp.s_addr));
5829 }
5830
5831 static struct zebra_vxlan_sg *zebra_vxlan_sg_new(struct zebra_vrf *zvrf,
5832 struct prefix_sg *sg)
5833 {
5834 struct zebra_vxlan_sg *vxlan_sg;
5835
5836 vxlan_sg = XCALLOC(MTYPE_ZVXLAN_SG, sizeof(*vxlan_sg));
5837
5838 vxlan_sg->zvrf = zvrf;
5839 vxlan_sg->sg = *sg;
5840 prefix_sg2str(sg, vxlan_sg->sg_str);
5841
5842 vxlan_sg = hash_get(zvrf->vxlan_sg_table, vxlan_sg, hash_alloc_intern);
5843
5844 if (IS_ZEBRA_DEBUG_VXLAN)
5845 zlog_debug("vxlan SG %s created", vxlan_sg->sg_str);
5846
5847 return vxlan_sg;
5848 }
5849
5850 static struct zebra_vxlan_sg *zebra_vxlan_sg_find(struct zebra_vrf *zvrf,
5851 struct prefix_sg *sg)
5852 {
5853 struct zebra_vxlan_sg lookup;
5854
5855 lookup.sg = *sg;
5856 return hash_lookup(zvrf->vxlan_sg_table, &lookup);
5857 }
5858
5859 static struct zebra_vxlan_sg *zebra_vxlan_sg_add(struct zebra_vrf *zvrf,
5860 struct prefix_sg *sg)
5861 {
5862 struct zebra_vxlan_sg *vxlan_sg;
5863 struct zebra_vxlan_sg *parent = NULL;
5864 struct in_addr sip;
5865
5866 vxlan_sg = zebra_vxlan_sg_find(zvrf, sg);
5867 if (vxlan_sg)
5868 return vxlan_sg;
5869
5870 /* create a *G entry for every BUM group implicitly -
5871 * 1. The SG entry is used by pimd to setup the vxlan-origination-mroute
5872 * 2. the XG entry is used by pimd to setup the
5873 * vxlan-termination-mroute
5874 */
5875 if (sg->src.s_addr != INADDR_ANY) {
5876 memset(&sip, 0, sizeof(sip));
5877 parent = zebra_vxlan_sg_do_ref(zvrf, sip, sg->grp);
5878 if (!parent)
5879 return NULL;
5880 }
5881
5882 vxlan_sg = zebra_vxlan_sg_new(zvrf, sg);
5883
5884 zebra_vxlan_sg_send(zvrf, sg, vxlan_sg->sg_str,
5885 ZEBRA_VXLAN_SG_ADD);
5886
5887 return vxlan_sg;
5888 }
5889
5890 static void zebra_vxlan_sg_del(struct zebra_vxlan_sg *vxlan_sg)
5891 {
5892 struct in_addr sip;
5893 struct zebra_vrf *zvrf;
5894
5895 zvrf = vrf_info_lookup(VRF_DEFAULT);
5896 if (!zvrf)
5897 return;
5898
5899 /* On SG entry deletion remove the reference to its parent XG
5900 * entry
5901 */
5902 if (vxlan_sg->sg.src.s_addr != INADDR_ANY) {
5903 memset(&sip, 0, sizeof(sip));
5904 zebra_vxlan_sg_do_deref(zvrf, sip, vxlan_sg->sg.grp);
5905 }
5906
5907 zebra_vxlan_sg_send(zvrf, &vxlan_sg->sg,
5908 vxlan_sg->sg_str, ZEBRA_VXLAN_SG_DEL);
5909
5910 hash_release(vxlan_sg->zvrf->vxlan_sg_table, vxlan_sg);
5911
5912 if (IS_ZEBRA_DEBUG_VXLAN)
5913 zlog_debug("VXLAN SG %s deleted", vxlan_sg->sg_str);
5914
5915 XFREE(MTYPE_ZVXLAN_SG, vxlan_sg);
5916 }
5917
5918 static void zebra_vxlan_sg_do_deref(struct zebra_vrf *zvrf,
5919 struct in_addr sip, struct in_addr mcast_grp)
5920 {
5921 struct zebra_vxlan_sg *vxlan_sg;
5922 struct prefix_sg sg;
5923
5924 sg.family = AF_INET;
5925 sg.prefixlen = IPV4_MAX_BYTELEN;
5926 sg.src = sip;
5927 sg.grp = mcast_grp;
5928 vxlan_sg = zebra_vxlan_sg_find(zvrf, &sg);
5929 if (!vxlan_sg)
5930 return;
5931
5932 if (vxlan_sg->ref_cnt)
5933 --vxlan_sg->ref_cnt;
5934
5935 if (!vxlan_sg->ref_cnt)
5936 zebra_vxlan_sg_del(vxlan_sg);
5937 }
5938
5939 static struct zebra_vxlan_sg *zebra_vxlan_sg_do_ref(struct zebra_vrf *zvrf,
5940 struct in_addr sip,
5941 struct in_addr mcast_grp)
5942 {
5943 struct zebra_vxlan_sg *vxlan_sg;
5944 struct prefix_sg sg;
5945
5946 sg.family = AF_INET;
5947 sg.prefixlen = IPV4_MAX_BYTELEN;
5948 sg.src = sip;
5949 sg.grp = mcast_grp;
5950 vxlan_sg = zebra_vxlan_sg_add(zvrf, &sg);
5951 if (vxlan_sg)
5952 ++vxlan_sg->ref_cnt;
5953
5954 return vxlan_sg;
5955 }
5956
5957 void zebra_vxlan_sg_deref(struct in_addr local_vtep_ip,
5958 struct in_addr mcast_grp)
5959 {
5960 struct zebra_vrf *zvrf;
5961
5962 if (local_vtep_ip.s_addr == INADDR_ANY
5963 || mcast_grp.s_addr == INADDR_ANY)
5964 return;
5965
5966 zvrf = vrf_info_lookup(VRF_DEFAULT);
5967 if (!zvrf)
5968 return;
5969
5970 zebra_vxlan_sg_do_deref(zvrf, local_vtep_ip, mcast_grp);
5971 }
5972
5973 void zebra_vxlan_sg_ref(struct in_addr local_vtep_ip, struct in_addr mcast_grp)
5974 {
5975 struct zebra_vrf *zvrf;
5976
5977 if (local_vtep_ip.s_addr == INADDR_ANY
5978 || mcast_grp.s_addr == INADDR_ANY)
5979 return;
5980
5981 zvrf = vrf_info_lookup(VRF_DEFAULT);
5982 if (!zvrf)
5983 return;
5984 zebra_vxlan_sg_do_ref(zvrf, local_vtep_ip, mcast_grp);
5985 }
5986
5987 static void zebra_vxlan_xg_pre_cleanup(struct hash_bucket *bucket, void *arg)
5988 {
5989 struct zebra_vxlan_sg *vxlan_sg = (struct zebra_vxlan_sg *)bucket->data;
5990
5991 /* increment the ref count against (*,G) to prevent them from being
5992 * deleted
5993 */
5994 if (vxlan_sg->sg.src.s_addr == INADDR_ANY)
5995 ++vxlan_sg->ref_cnt;
5996 }
5997
5998 static void zebra_vxlan_xg_post_cleanup(struct hash_bucket *bucket, void *arg)
5999 {
6000 struct zebra_vxlan_sg *vxlan_sg = (struct zebra_vxlan_sg *)bucket->data;
6001
6002 /* decrement the dummy ref count against (*,G) to delete them */
6003 if (vxlan_sg->sg.src.s_addr == INADDR_ANY) {
6004 if (vxlan_sg->ref_cnt)
6005 --vxlan_sg->ref_cnt;
6006 if (!vxlan_sg->ref_cnt)
6007 zebra_vxlan_sg_del(vxlan_sg);
6008 }
6009 }
6010
6011 static void zebra_vxlan_sg_cleanup(struct hash_bucket *bucket, void *arg)
6012 {
6013 struct zebra_vxlan_sg *vxlan_sg = (struct zebra_vxlan_sg *)bucket->data;
6014
6015 zebra_vxlan_sg_del(vxlan_sg);
6016 }
6017
6018 static void zebra_vxlan_cleanup_sg_table(struct zebra_vrf *zvrf)
6019 {
6020 /* increment the ref count against (*,G) to prevent them from being
6021 * deleted
6022 */
6023 hash_iterate(zvrf->vxlan_sg_table, zebra_vxlan_xg_pre_cleanup, NULL);
6024
6025 hash_iterate(zvrf->vxlan_sg_table, zebra_vxlan_sg_cleanup, NULL);
6026
6027 /* decrement the dummy ref count against the XG entries */
6028 hash_iterate(zvrf->vxlan_sg_table, zebra_vxlan_xg_post_cleanup, NULL);
6029 }
6030
6031 static void zebra_vxlan_sg_replay_send(struct hash_bucket *bucket, void *arg)
6032 {
6033 struct zebra_vxlan_sg *vxlan_sg = (struct zebra_vxlan_sg *)bucket->data;
6034
6035 zebra_vxlan_sg_send(vxlan_sg->zvrf, &vxlan_sg->sg,
6036 vxlan_sg->sg_str, ZEBRA_VXLAN_SG_ADD);
6037 }
6038
6039 /* Handle message from client to replay vxlan SG entries */
6040 void zebra_vxlan_sg_replay(ZAPI_HANDLER_ARGS)
6041 {
6042 if (IS_ZEBRA_DEBUG_VXLAN)
6043 zlog_debug("VxLAN SG updates to PIM, start");
6044
6045 SET_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG);
6046
6047 if (!EVPN_ENABLED(zvrf)) {
6048 if (IS_ZEBRA_DEBUG_VXLAN)
6049 zlog_debug("VxLAN SG replay request on unexpected vrf %d",
6050 zvrf->vrf->vrf_id);
6051 return;
6052 }
6053
6054 hash_iterate(zvrf->vxlan_sg_table, zebra_vxlan_sg_replay_send, NULL);
6055 }
6056
6057
6058 /* Cleanup EVPN configuration of a specific VRF */
6059 static void zebra_evpn_vrf_cfg_cleanup(struct zebra_vrf *zvrf)
6060 {
6061 struct zebra_l3vni *zl3vni = NULL;
6062
6063 zvrf->advertise_all_vni = 0;
6064 zvrf->advertise_gw_macip = 0;
6065 zvrf->advertise_svi_macip = 0;
6066 zvrf->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL;
6067
6068 hash_iterate(zvrf->evpn_table, zebra_evpn_cfg_cleanup, NULL);
6069
6070 if (zvrf->l3vni)
6071 zl3vni = zl3vni_lookup(zvrf->l3vni);
6072 if (zl3vni) {
6073 /* delete and uninstall all rmacs */
6074 hash_iterate(zl3vni->rmac_table, zl3vni_del_rmac_hash_entry,
6075 zl3vni);
6076 /* delete and uninstall all next-hops */
6077 hash_iterate(zl3vni->nh_table, zl3vni_del_nh_hash_entry,
6078 zl3vni);
6079 }
6080 }
6081
6082 /* Cleanup BGP EVPN configuration upon client disconnect */
6083 static int zebra_evpn_bgp_cfg_clean_up(struct zserv *client)
6084 {
6085 struct vrf *vrf;
6086 struct zebra_vrf *zvrf;
6087
6088 RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
6089 zvrf = vrf->info;
6090 if (zvrf)
6091 zebra_evpn_vrf_cfg_cleanup(zvrf);
6092 }
6093
6094 return 0;
6095 }
6096
6097 static int zebra_evpn_pim_cfg_clean_up(struct zserv *client)
6098 {
6099 struct zebra_vrf *zvrf = zebra_vrf_get_evpn();
6100
6101 if (CHECK_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG)) {
6102 if (IS_ZEBRA_DEBUG_VXLAN)
6103 zlog_debug("VxLAN SG updates to PIM, stop");
6104 UNSET_FLAG(zvrf->flags, ZEBRA_PIM_SEND_VXLAN_SG);
6105 }
6106
6107 return 0;
6108 }
6109
6110 static int zebra_evpn_cfg_clean_up(struct zserv *client)
6111 {
6112 if (client->proto == ZEBRA_ROUTE_BGP)
6113 return zebra_evpn_bgp_cfg_clean_up(client);
6114
6115 if (client->proto == ZEBRA_ROUTE_PIM)
6116 return zebra_evpn_pim_cfg_clean_up(client);
6117
6118 return 0;
6119 }
6120
6121 /*
6122 * Handle results for vxlan dataplane operations.
6123 */
6124 extern void zebra_vxlan_handle_result(struct zebra_dplane_ctx *ctx)
6125 {
6126 return;
6127 }
6128
6129 /* Config knob for accepting lower sequence numbers */
6130 void zebra_vxlan_set_accept_bgp_seq(bool set)
6131 {
6132 accept_bgp_seq = set;
6133 }
6134
6135 bool zebra_vxlan_get_accept_bgp_seq(void)
6136 {
6137 return accept_bgp_seq;
6138 }
6139
6140 /* Cleanup BGP EVPN configuration upon client disconnect */
6141 extern void zebra_evpn_init(void)
6142 {
6143 hook_register(zserv_client_close, zebra_evpn_cfg_clean_up);
6144 }
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